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1

The minimum-uncertainty coherent states for Landau levels  

Science Conference Proceedings (OSTI)

The Glauber minimum-uncertainty coherent states with two variables for Landau levels, based on the representation of Weyl-Heisenberg algebra by two different modes, have been studied about four decades ago. Here, we introduce new two-variable coherent states with minimum uncertainty relationship for Landau levels in three different methods: the infinite unitary representation of su(1, 1) is realized in two different methods, first, by consecutive levels with the same energy gaps and also with the same value for z-angular momentum quantum number, then, by shifting z-angular momentum mode number by two units while the energy level remaining the same. Besides, for su(2), whether by lowest Landau levels or Landau levels with lowest z-angular momentum, just one finite unitary representation is introduced. Having constructed the generalized Klauder-Perelomov coherent states, for any of the three representations, we obtain their Glauber coherency by displacement operator of Weyl-Heisenberg algebra.

Dehghani, A. [Physics Department, Payame Noor University, P. O. Box 19395-4697 Tehran (Iran, Islamic Republic of); Fakhri, H. [Department of Theoretical Physics and Astrophysics, Faculty of Physics, University of Tabriz, P. O. Box 51666-16471 Tabriz (Iran, Islamic Republic of); Mojaveri, B. [Department of Physics, Azarbaijan Shahid Madani University, P. O. Box 51745-406 Tabriz (Iran, Islamic Republic of)

2012-12-15T23:59:59.000Z

2

Sea Level Pressure Minimum along the Kuroshio and Its Extension  

Science Conference Proceedings (OSTI)

Atmospheric effects of sea surface temperature (SST) fronts along the Kuroshio and Kuroshio Extension (K-KE) are investigated by examining spatial characteristics of the climatological sea level pressure (SLP), surface winds and surface heat flux (...

Youichi Tanimoto; Tomohisa Kanenari; Hiroki Tokinaga; Shang-Ping Xie

2011-08-01T23:59:59.000Z

3

Alternative Minimum Levels for Utility Aqueous Discharges: Chemical Analytical Measurement Guide for National Pollutant Discharge El imination System (NPDES) Permits  

Science Conference Proceedings (OSTI)

The Clean Water Act requires the electric utility industry to monitor their wastewater discharges to ensure compliance with discharge permit limits. EPRI developed a new definition of quantitation level appropriate to water quality compliance monitoring and used data from its previous studies on trace element analysis of utility wastewaters to calculate Alternative Minimum Levels (AMLs). The approach developed in this report will help utilities define reasonable pollutant discharge limits to meet effluen...

1997-01-03T23:59:59.000Z

4

SATURATION LEVELS FOR WHITE-LIGHT FLARES OF FLARE STARS: VARIATION OF MINIMUM FLARE DURATION FOR SATURATION  

Science Conference Proceedings (OSTI)

Taking into account results obtained from models and from statistical analyses of obtained parameters, we discuss flare activity levels and flare characteristics of five UV Ceti stars. We present the parameters of unpublished flares detected over two years of observations of V1005 Ori. We compare parameters of the U-band flares detected over several seasons of observations of AD Leo, EV Lac, EQ Peg, V1054 Oph, and V1005 Ori. Flare frequencies calculated for all program stars and maximum energy levels of the flares are compared, and we consider which is the most correct parameter as an indicator of flare activity levels. Using the One Phase Exponential Association function, the distributions of flare equivalent duration versus flare total duration are modeled for each program star. We use the Independent Samples t-Test in the statistical analyses of the parameters obtained from the models. The results reveal some properties of flare processes occurring on the surfaces of UV Ceti type stars. (1) Flare energies cannot be higher than a specific value regardless of the length of the flare total duration. This must be a saturation level for white-light flares occurring in flare processes observed in the U band. Thus, for the first time it is shown that white-light flares have a saturation in a specific energy range. (2) The span values, which are the difference between the equivalent durations of flares with the shortest and longest total durations, are almost equal for each star. (3) The half-life values, minimum flare durations for saturation, increase toward the later spectral types. (4) Both maximum total durations and maximum rise times computed from the observed flares decrease toward the later spectral types among the UV Ceti stars. According to the maximum energy levels obtained from the models, both EV Lac and EQ Peg are more active than the other three program stars, while AD Leo is the most active flare star according to the flare frequencies.

Dal, H. A.; Evren, S., E-mail: ali.dal@ege.edu.tr [Department of Astronomy and Space Sciences, University of Ege, Bornova, 35100 Izmir (Turkey)

2011-02-15T23:59:59.000Z

5

National Level Co-Control Study of the Targets for Energy Intensity and  

NLE Websites -- All DOE Office Websites (Extended Search)

National Level Co-Control Study of the Targets for Energy Intensity and National Level Co-Control Study of the Targets for Energy Intensity and Sulfur Dioxide in China Title National Level Co-Control Study of the Targets for Energy Intensity and Sulfur Dioxide in China Publication Type Report LBNL Report Number LBNL-5253E Year of Publication 2011 Authors Zhou, Nan, Lynn K. Price, Nina Zheng, Jing Ke, and Ali Hasanbeigi Date Published 10/2011 Publisher Lawrence Berkerley National Laboratory ISBN Number LBNL-5253E Keywords china, china energy, co-control, energy intensity, industrial energy efficiency, iron and steel industry, Low Emission & Efficient Industry, policy studies, sulfur dioxide Abstract Since 2006, China has set goals of reducing energy intensity, emissions, and pollutants in multiple guidelines and in the Five Year Plans. Various strategies and measures have then been taken to improve the energy efficiency in all sectors and to reduce pollutants. Since controlling energy, CO2 emissions, and pollutants falls under the jurisdiction of different government agencies in China, many strategies are being implemented to fulfill only one of these objectives.Co-controls or integrated measures could simultaneously reduce greenhouse gas (GHG)emissions and criteria air pollutant emissions. The targets could be met in a more cost effective manner if the integrated measures can be identified and prioritized. This report provides analysis and insights regarding how these targets could be met via co-control measures focusing on both CO2 and SO2 emissions in the cement, iron & steel, and power sectors to 2030 in China. An integrated national energy and emission model was developed in order to establish a baseline scenario that was used to assess the impact of actions already taken by the Chinese government as well as planned and expected actions. In addition, CO2 mitigation scenarios and SO2 control scenarios were also established to evaluate the impact of each of the measures and the combined effects.

6

Target  

NLE Websites -- All DOE Office Websites (Extended Search)

Lifetime measurements in Lifetime measurements in inverse kinematics Coulex Target e.g. C Stopper e.g. Cu Beam X X * C Si-Det. Yale Plunger 120 Te at 300 MeV Plunger foils Si-Detector Compton-suppressed Clover detectors (8) 50% Coulomb- barrier )] ( exp[ 1 ) ( 0 d d d P - - - = λ Probability of emitting gamma-ray while in-flight: From data: ) ( ) ( ) ( ) ( ) ( d I d I d P total shifted γ γ = where ) ( ) ( γ γ γ γ θ ε W E N I = Lifetime analysis For example: Valence proton symmetry Data from NNDC, WNSL ( 120 Te), NBI group ( 116 Te), Cologne ( 114 Te) B(E2)up [e 2 b 2 ] N A.A. Pasternak et al., EPJA 13, 435 (2002) O. Möller et al., PRC 71, 064324 (2005) Study deviations from (collective) expectations -> needs a fast and easy way to obtain data -> inverse RDDS well suited! Important in inverse kinematics: Deorientation F I J Large v/c => except for relativistic

7

Independent Oversight Targeted Review of Activity-Level Implementation of Radiological Controls at Sandia National Laboratories, November 2013  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Targeted Review of Targeted Review of Activity-Level Implementation of Radiological Controls at Sandia National Laboratories May 2011 November 2013 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................ 1 2.0 Scope................................................................................................................................................... 1 3.0 Background ......................................................................................................................................... 2

8

transgenes on the level of the target fatty acids in Brassica napus L.  

E-Print Network (OSTI)

The effects of genomic position and copy number of acyl-acyl carrier protein (ACP) thioesterase (TE) transgenes on the major target fatty acid, either lauric acid (C12:0) or palmitic acid (C16:0) depending on the TE, in transgenic Brassica napus seed oil were investigated. Four transgenic parental lines, transformed individually with

Jihong Tang; Rachael Scarth; Brian Fristensky

2003-01-01T23:59:59.000Z

9

Minimum Changeover Cost Arborescence  

E-Print Network (OSTI)

having minimum changeover cost, a cost that we now describe. ... We define the changeover cost at j, denoted by d(j), as the sum of the costs at j paid for each of ...

10

Minimum Magnetic Energy Theorem  

E-Print Network (OSTI)

The Thomson's Theorem states that static charge distributions in conductors show up at the conducting surfaces in an equipotential configuration, so that the electrostatic energy is a minimum. In this work we study an analogue statement for magnetic systems: in a given set of conductors, the stored magnetic field energy reaches the minimum value for superficial current distributions so that the magnetic vector potential is tangent to the conductors surfaces. This is the counterpart of Thomson's theorem for the magnetic field.

Fiolhais, M C N

2008-01-01T23:59:59.000Z

11

Level  

E-Print Network (OSTI)

7 at level 3 (FHEQ level 6) and the rest at level M (FHEQ level 7) 4. Other entry N/A Credit Level awards (if applicable): 5. Exit Awards: PGDip Advanced Computer Science 120 credits with not more than 30 credits at level 3 (FHEQ level 6) and the rest at level M (FHEQ level 7) Credit

Programme Csad

2007-01-01T23:59:59.000Z

12

Level  

E-Print Network (OSTI)

7 at level 3 (FHEQ level 6) and the rest at level M (FHEQ level 7) 4. Other entry N/A Credit Level awards (if applicable): 5. Exit Awards: PGDip Computer Science 120 credits with not more than 30 credits at level 3 (FHEQ level 6) and the rest at level M (FHEQ level 7) Credit

unknown authors

2006-01-01T23:59:59.000Z

13

The Minimum Price Contract  

E-Print Network (OSTI)

A minimum price contract is one of many tools a marketer may use to better manage price and production risk while trying to achieve financial goals and objectives. This publication discusses the advantages and disadvantages involved in this marketing program and the situations when it can be used.

Waller, Mark L.; Amosson, Stephen H.; Welch, Mark; Dhuyvetter, Kevin C.

2008-10-17T23:59:59.000Z

14

Level  

E-Print Network (OSTI)

7 180 credits with not more than 30 credits at level 3 (FHEQ level 6) and the rest at level M (FHEQ level 7) 4. Other entry N/A Credit Level awards (if applicable): 5. Exit Awards: PGDip in Advanced Computer Science with

Programme Csci

2010-01-01T23:59:59.000Z

15

Minimum Cost Arborescences ?  

E-Print Network (OSTI)

In this paper, we analyze the cost allocation problem when a group of agents or nodes have to be connected to a source, and where the cost matrix describing the cost of connecting each pair of agents is not necessarily symmetric, thus extending the well-studied problem of minimum cost spanning tree games, where the costs are assumed to be symmetric. The focus is on rules which satisfy axioms representing incentive and fairness properties. We show that while some results are similar, there are also significant differences between the frameworks corresponding to symmetric and asymmetric cost matrices.

Bhaskar Dutta; Debasis Mishra; We Thank Daniel Granot; Anirban Kar; Herve Moulin For Comments

2011-01-01T23:59:59.000Z

16

Minimum Description Length Model Selection  

E-Print Network (OSTI)

Minimum Description Length Model Selection Problems and Extensions Steven de Rooij #12;#12;Minimum Description Length Model Selection Problems and Extensions #12;ILLC Dissertation Series DS-2008-07 For further-mail: illc@science.uva.nl homepage: http://www.illc.uva.nl/ #12;Minimum Description Length Model Selection

17

MINIMUM SECURITY REQUIREMENTS FOR FEDERAL  

E-Print Network (OSTI)

March 2006 MINIMUM SECURITY REQUIREMENTS FOR FEDERAL INFORMATION AND INFORMATION SYSTEMS: FEDERAL INFORMATION PROCESSING STANDARD (FIPS) 200 APPROVED BY THE SECRETARY OF COMMERCE MINIMUM SECURITY REQUIREMENTS BY THE SECRETARY OF COMMERCE Shirley Radack, EditorShirley Radack, Editor Computer Security Division

18

Quantum games and minimum entropy  

Science Conference Proceedings (OSTI)

This paper analyze Nash's equilibrium (maximum utility MU) and its relations with the order state(minimum entropy ME). I introduce the concept of minimum entropy as a paradigm of both Nash-Hayek's equilibrium. The ME concept is related to Quantum Games. ...

Edward Jimnez

2003-05-01T23:59:59.000Z

19

National Level Co-Control Study of the Targets for Energy Intensity and Sulfur Dioxide in China  

E-Print Network (OSTI)

carbon dioxide emissions. The model uses generation dispatch algorithms, efficiency levels, and capacity factorsemissions factors for fuel and electricity. Table A-3.3.2 Energy Savings, Costs, and Carbon Dioxide

Zhou, Nan

2013-01-01T23:59:59.000Z

20

Minimum Efficiency Standards for Electric Motors | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors Minimum Efficiency Standards for Electric Motors October 7, 2013 - 11:28am Addthis Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for general-purpose, single-speed, polyphase induction motors of 1 to 500 horsepower (hp). This new standard took effect in December 2010. The new minimum efficiency levels match FEMP's performance requirement for these motors. As a result of this increase in mandatory minimum standards and combined with the lack of significant availability of motors exceeding these standards, FEMP is suspending the purchasing specification for electric motors. Federal buyers may select for purchase any motor that meets design requirements.

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


21

Minimum Gas Service Standards (Ohio)  

Energy.gov (U.S. Department of Energy (DOE))

Natural gas companies in Ohio are required to follow the Minimum Gas Service Standards, which are set and enforced by the Public Utilities Commission of Ohio. These rules are found in chapter 4901...

22

National Level Co-Control Study of the Targets for Energy Intensity and Sulfur Dioxide in China  

Science Conference Proceedings (OSTI)

Since 2006, China has set goals of reducing energy intensity, emissions, and pollutants in multiple guidelines and in the Five Year Plans. Various strategies and measures have then been taken to improve the energy efficiency in all sectors and to reduce pollutants. Since controlling energy, CO{sub 2} emissions, and pollutants falls under the jurisdiction of different government agencies in China, many strategies are being implemented to fulfill only one of these objectives. Co-controls or integrated measures could simultaneously reduce greenhouse gas (GHG) emissions and criteria air pollutant emissions. The targets could be met in a more cost effective manner if the integrated measures can be identified and prioritized. This report provides analysis and insights regarding how these targets could be met via co-control measures focusing on both CO{sub 2} and SO{sub 2} emissions in the cement, iron &steel, and power sectors to 2030 in China. An integrated national energy and emission model was developed in order to establish a baseline scenario that was used to assess the impact of actions already taken by the Chinese government as well as planned and expected actions. In addition, CO{sub 2} mitigation scenarios and SO{sub 2} control scenarios were also established to evaluate the impact of each of the measures and the combined effects. In the power sector, although the end of pipe SO{sub 2} control technology such as flue gas desulfurization (FGD) has the largest reduction potential for SO{sub 2} emissions, other CO{sub 2} control options have important co-benefits in reducing SO{sub 2} emissions of 52.6 Mt of SO{sub 2} accumulatively. Coal efficiency improvements along with hydropower, renewable and nuclear capacity expansion will result in more than half of the SO{sub 2} emission reductions as the SO{sub 2} control technology through 2016. In comparison, the reduction from carbon capture and sequestration (CCS) is much less and has negative SO{sub 2} reductions potential. The expanded biomass generation scenario does not have significant potential for reducing SO{sub 2} emissions, because of its limited availability. For the cement sector, the optimal co-control strategy includes accelerated adoption of energy efficiency measures, decreased use of clinker in cement production, increased use of alternative fuels, and fuel-switching to biomass. If desired, additional SO{sub 2} mitigation could be realized by more fully adopting SO{sub 2} abatement mitigation technology measures. The optimal co-control scenario results in annual SO{sub 2} emissions reductions in 2030 of 0.16 Mt SO{sub 2} and annual CO{sub 2} emissions reductions of 76 Mt CO{sub 2}. For the iron and steel sector, the optimal co-control strategy includes accelerated adoption of energy efficiency measures, increased share of electric arc furnace steel production, and reduced use of coal and increased use of natural gas in steel production. The strategy also assumes full implementation of sinter waste gas recycling and wet desulfurization. This strategy results in annual SO{sub 2} emissions reductions in 2030 of 1.3 Mt SO{sub 2} and annual CO{sub 2} emissions reductions of 173 Mt CO{sub 2}.

Zhou, Nan; Price, Lynn; Zheng, Nina; Ke, Jing; Hasanbeigi, Ali

2011-10-15T23:59:59.000Z

23

Credible Research Designs for Minimum Wage Studies  

E-Print Network (OSTI)

Credible Research Designs for Minimum Wage Studies SylviaWe assess alternative research designs for minimum wageAllegretto: Institute for Research on Labor and Employment,

Allegretto, Sylvia; Dube, Arindrajit; Reich, Michael; Zipperer, Ben

2013-01-01T23:59:59.000Z

24

Federal Energy Management Program: Minimum Efficiency Standards...  

NLE Websites -- All DOE Office Websites (Extended Search)

Minimum Efficiency Standards for Electric Motors Section 313 of the Energy Independence and Security Act (EISA) of 2007 raised Federal minimum efficiency standards for...

25

Do We Know of Any Maunder Minimum Stars?  

E-Print Network (OSTI)

Most stars previously identified as Maunder minimum stars are old stars evolved off of the main sequence. Analysis of activity measurements from the California and Carnegie Planet Search program stars and Hipparcos parallaxes implies that the canonical age-chromospheric activity relation breaks down for stars older than $\\sim 6$ Gyr when activity is calculated from Mount Wilson S values. Stars only 1 magnitude above the main sequence exhibit significantly suppressed activity levels which have been mistaken for examples of Maunder minimum behavior.

Jason T. Wright

2004-06-15T23:59:59.000Z

26

Minimum Bias Measurements with the ATLAS Detector at the CERN Large Hadron Collider  

E-Print Network (OSTI)

efficiency at the Event Filter MBTS trigger efficiency atand counted at the Event Filter trigger level. Any eventsCHAPTER 3. MINIMUM BIAS TRIGGER Event Selection The analysis

Leyton, Michael A.

2009-01-01T23:59:59.000Z

27

Development and Online Opertation of Minimum Bias Triggers in ATLAS  

E-Print Network (OSTI)

The design of minimum bias triggers should allow for a highly efficient selection on pp-collisions, while minimising any possible bias in the event selection. In ATLAS two main minimum bias triggers have been developed using complementary technologies. A hardware based first level trigger, consisting of 32 plastic scintillators, has proven to efficienctly select pp-interactions. In particular during the start-up phase this trigger played a crucial role for the commissioning of the central trigger processor and detector sub-systems. A complementary selection is achieved by a multi-level minimum bias trigger, seeded off a random trigger on filled bunches. For the event selection at higher trigger levels a dedicated algorithm was developed, able to cope with around 86 millions of detector signals per bunch-crossing. We will present these trigger systems and their deployment online, highlighting their performance and trigger efficiencies. We outline as well the operation with increasing beam intensities and lumin...

Martin, T; The ATLAS collaboration

2010-01-01T23:59:59.000Z

28

Minimum cost model energy code envelope requirements  

SciTech Connect

This paper describes the analysis underlying development of the U.S. Department of Energy`s proposed revisions of the Council of American Building Officials (CABO) 1993 Model Energy Code (MEC) building thermal envelope requirements for single-family and low-rise multifamily residences. This analysis resulted in revised MEC envelope conservation levels based on an objective methodology that determined the minimum-cost combination of energy efficiency measures (EEMs) for residences in different locations around the United States. The proposed MEC revision resulted from a cost-benefit analysis from the consumer`s perspective. In this analysis, the costs of the EEMs were balanced against the benefit of energy savings. Detailed construction, financial, economic, and fuel cost data were compiled, described in a technical support document, and incorporated in the analysis. A cost minimization analysis was used to compare the present value of the total long-nm costs for several alternative EEMs and to select the EEMs that achieved the lowest cost for each location studied. This cost minimization was performed for 881 cities in the United States, and the results were put into the format used by the MEC. This paper describes the methodology for determining minimum-cost energy efficiency measures for ceilings, walls, windows, and floors and presents the results in the form of proposed revisions to the MEC. The proposed MEC revisions would, on average, increase the stringency of the MEC by about 10%.

Connor, C.C.; Lucas, R.G.; Turchen, S.J.

1994-08-01T23:59:59.000Z

29

ATLAS measurements of minimum bias and soft QCD  

Science Conference Proceedings (OSTI)

The first measurements of charged particle production in proton?proton collisions at center?of?mass energy s ?=?900? GeV and 7 TeV recorded with the ATLAS detector at the LHC are presented. Minimum bias distributions are measured for events with at least one charged particle in the kinematic range |?| 500? MeV and compared with the predictions from various Monte Carlo models. Activity in the underlying event was measured with respect to the highest p T track in the event. Both the minimum bias and underlying event measurements are fully corrected for detector effects to obtain distributions at the hadron level.

Maaike Limper; The ATLAS collaboration

2010-01-01T23:59:59.000Z

30

Zero forcing parameters and minimum rank problems  

E-Print Network (OSTI)

The zero forcing number Z(G), which is the minimum number of vertices in a zero forcing set of a graph G, is used to study the maximum nullity / minimum rank of the family of symmetric matrices described by G. It is shown that for a connected graph of order at least two, no vertex is in every zero forcing set. The positive semidefinite zero forcing number Z_+(G) is introduced, and shown to be equal to |G|-OS(G), where OS(G) is the recently defined ordered set number that is a lower bound for minimum positive semidefinite rank. The positive semidefinite zero forcing number is applied to the computation of positive semidefinite minimum rank of certain graphs. An example of a graph for which the real positive symmetric semidefinite minimum rank is greater than the complex Hermitian positive semidefinite minimum rank is presented.

Barioli, Francesco; Fallat, Shaun M; Hall, H Tracy; Hogben, Leslie; Shader, Bryan; Driessche, P van den; van der Holst, Hein

2010-01-01T23:59:59.000Z

31

Production Targets  

E-Print Network (OSTI)

Hall (2005), Prices, Production, and Inventories over theProduction Targets ? Guillermo Caruana CEMFI caruana@cem?.esthe theory using monthly production targets of the Big Three

Caruana, Guillermo; Einav, Liran

2005-01-01T23:59:59.000Z

32

Cape Charles - STIP Minimum Sustainability Requirements (Virginia...  

Open Energy Info (EERE)

Share this page on Facebook icon Twitter icon Cape Charles - STIP Minimum Sustainability Requirements (Virginia) This is the approved revision of this page, as well as...

33

Parabolic equations without a minimum principle.  

E-Print Network (OSTI)

??In this thesis, we consider several parabolic equations for which the minimum principle fails. We first consider a two-point boundary value problem for a one (more)

Pang, Huadong

2007-01-01T23:59:59.000Z

34

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY...

35

Stochastic Variational Approach to Minimum Uncertainty States  

E-Print Network (OSTI)

We introduce a new variational characterization of Gaussian diffusion processes as minimum uncertainty states. We then define a variational method constrained by kinematics of diffusions and Schr\\"{o}dinger dynamics to seek states of local minimum uncertainty for general non-harmonic potentials.

F. Illuminati; L. Viola

1995-01-11T23:59:59.000Z

36

A New Minimum Temperature Record for Oklahoma  

Science Conference Proceedings (OSTI)

A minimum temperature of ?31F (?35C) was recorded at Nowata, Oklahoma, on 10 February 2011. This exceeded the previous record minimum temperature for Oklahoma of ?27F (?32.8C). The Nowata station is in the Oklahoma Mesonet network. High pressure was ...

Gary McManus; Thomas W. Schmidlin; Christopher A. Fiebrich

2013-04-01T23:59:59.000Z

37

Setting targets for surrogate-based optimization  

Science Conference Proceedings (OSTI)

In the context of surrogate-based optimization (SBO), most designers have still very little guidance on when to stop and how to use infill measures with target requirements (e.g., one-stage approach for goal seeking and optimization); the reason: optimum ... Keywords: Extreme value theory, Minimum estimates from sample data, Setting targets, Surrogate-based optimization

Nestor V. Queipo; Salvador Pintos; Efrain Nava

2013-04-01T23:59:59.000Z

38

Microbial oceanography of anoxic oxygen minimum zones  

E-Print Network (OSTI)

Vast expanses of oxygen-deficient and nitrite-rich water define the major oxygen minimum zones (OMZs) of the global ocean. They support diverse microbial communities that influence the nitrogen economy of the oceans, ...

Ulloa, Osvaldo

39

Parabolic equations without a minimum principle  

E-Print Network (OSTI)

In this thesis, we consider several parabolic equations for which the minimum principle fails. We first consider a two-point boundary value problem for a one dimensional diffusion equation. We show the uniqueness and ...

Pang, Huadong

2007-01-01T23:59:59.000Z

40

Fast adaptive algorithms for low-level scene analysis: applications of polar exponential grid (PEG) representation to high-speed, scale-and-rotation invariant target segmentation  

SciTech Connect

Presents results of experimental studies in image understanding. Two experiments are discussed, one on image correlation and another on target boundary estimation. The experiments are demonstrative of polar exponential grid (peg) representation, an approach to sensory data coding which the authors believe will facilitate problems in 3-d machine perception. The discussion of the image correlation experiment is largely an exposition of the peg-representation concept and approaches to its computer implementation. A robust stochastic, parallel computation segmentation algorithm, the peg parallel hierarchical ripple filter (peg-phrf), is presented. 18 references.

Schenker, P.S.; Wong, K.M.; Cande, E.G.

1981-01-01T23:59:59.000Z

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


41

Minimum Additive Waste Stabilization (MAWS). Technology summary  

Science Conference Proceedings (OSTI)

In the Minimum Additive Waste Stabilization(MAWS) concept, actual waste streams are utilized as additive resources for vitrification, which may contain the basic components (glass formers and fluxes) for making a suitable glass or glassy slag. If too much glass former is present, then the melt viscosity or temperature will be too high for processing; while if there is too much flux, then the durability may suffer. Therefore, there are optimum combinations of these two important classes of constituents depending on the criteria required. The challenge is to combine these resources in such a way that minimizes the use of non-waste additives yet yields a processable and durable final waste form for disposal. The benefit to this approach is that the volume of the final waste form is minimized (waste loading maximized) since little or no additives are used and vitrification itself results in volume reduction through evaporation of water, combustion of organics, and compaction of the solids into a non-porous glass. This implies a significant reduction in disposal costs due to volume reduction alone, and minimizes future risks/costs due to the long term durability and leach resistance of glass. This is accomplished by using integrated systems that are both cost-effective and produce an environmentally sound waste form for disposal. individual component technologies may include: vitrification; thermal destruction; soil washing; gas scrubbing/filtration; and, ion-exchange wastewater treatment. The particular combination of technologies will depend on the waste streams to be treated. At the heart of MAWS is vitrification technology, which incorporates all primary and secondary waste streams into a final, long-term, stabilized glass wasteform. The integrated technology approach, and view of waste streams as resources, is innovative yet practical to cost effectively treat a broad range of DOE mixed and low-level wastes.

Not Available

1994-02-01T23:59:59.000Z

42

The Use of Polar-orbiting Satellite Sounding Data to Estimate Rural Maximum and Minimum Temperatures  

Science Conference Proceedings (OSTI)

Atmospheric sounding products from NOAA's polar-orbiting satellites were used to derive and test predictive equations of rural shelter-level maximum and minimum temperatures. Sounding data from both winter and summer months were combined with ...

Gregory L. Johnson; Jerry M. Davis; Thomas R. Karl; Alan L. McNab; J. Dan Tarpley; Peter Bloomfield

1993-05-01T23:59:59.000Z

43

JBIG2 Symbol Dictionary Design Based on Minimum Spanning Trees  

E-Print Network (OSTI)

The JBIG2 standard is a very flexible bi-level image coding strategy based on pattern matching. The encoder collects a set of symbols in a dictionary and encodes a page by reference to the dictionary symbols. JBIG2 allows the encoder to view all symbols and choose a good set for the dictionary. In this paper, we examine the bit rate trade-off that arises in choosing different dictionary sizes. In particular, we propose a suboptimal dictionary design technique based on minimum spanning trees. This technique gives competitive compression ratios and allows us to specify the dictionary size almost arbitrarily, thus providing a way to study the bit rate trade-off problem in detail. Keywords: JBIG2, Text image compression, Symbol dictionary, Minimum spanning tree 1

Yan Ye; Pamela Cosman

2000-01-01T23:59:59.000Z

44

Minimum error discrimination of Pauli channels  

E-Print Network (OSTI)

We solve the problem of discriminating with minimum error probability two given Pauli channels. We show that, differently from the case of discrimination between unitary transformations, the use of entanglement with an ancillary system can strictly improve the discrimination, and any maximally entangled state allows to achieve the optimal discrimination. We also provide a simple necessary and sufficient condition in terms of the structure of the channels for which the ultimate minimum error probability can be achieved without entanglement assistance. When such a condition is satisfied, the optimal input state is simply an eigenstate of one of the Pauli matrices.

Massimiliano F. Sacchi

2005-06-09T23:59:59.000Z

45

Federal Energy Management Program: Minimum Efficiency Standards for  

NLE Websites -- All DOE Office Websites (Extended Search)

Minimum Efficiency Minimum Efficiency Standards for Electric Motors to someone by E-mail Share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Facebook Tweet about Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Twitter Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Google Bookmark Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Delicious Rank Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on Digg Find More places to share Federal Energy Management Program: Minimum Efficiency Standards for Electric Motors on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories

46

DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS...  

NLE Websites -- All DOE Office Websites (Extended Search)

CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: MINIMUM CORE COMPETENCY TRAINING REQUIREMENTS DOE CYBER SECURITY EBK: CORE COMPETENCY...

47

Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

ACMP Flash 2011-62 ACMP Flash 2011-62 Contracting Officer Warrant Requirements Function Experience Minimum Training Continuous Learning GS-1105s with a warrant for purchases up to $25,000 At least 6 months of Government Purchase Card experience Certified to Level I in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases $25,000 up to the simplified acquisition threshold At least 1 year of Government Purchase Card experience Certified to Level II in the ACMP Purchasing Program 80 hours every two years GS-1105s with a warrant for purchases over the simplified acquisition threshold At least 5 years of progressively complex contracting experience Certified to Level III in the ACMP Purchasing Program 80 hours every two years

48

Target volume uncertainty and a method to visualize its effect on the target dose prescription  

SciTech Connect

Purpose: To consider the uncertainty in the construction of target boundaries for optimization, and to demonstrate how the principles of mathematical programming can be applied to determine and display the effect on the tumor dose of making small changes to the target boundary. Methods: The effect on the achievable target dose of making successive small shifts to the target boundary within its range of uncertainty was found by constructing a mixed-integer linear program that automated the placement of the beam angles using the initial target volume. Results: The method was demonstrated using contours taken from a nasopharynx case, with dose limits placed on surrounding structures. In the illustrated case, enlarging the target anteriorly to provide greater assurance of disease coverage did not force a sacrifice in the minimum or mean tumor doses. However, enlarging the margin posteriorly, near a critical structure, dramatically changed the minimum, mean, and maximum tumor doses. Conclusion: Tradeoffs between the position of the target boundary and the minimum target dose can be developed using mixed-integer programming, and the results projected as a guide to contouring and plan selection.

McCormick, Traci [Radiation Oncology, Indiana University, Indianapolis, IN (United States); Dink, Delal [Department of Chemical Engineering, Purdue University, West Lafayette, IN (United States); Orcun, Seza [Department of Chemical Engineering, Purdue University, West Lafayette, IN (United States); Pekny, Joseph [Department of Chemical Engineering, Purdue University, West Lafayette, IN (United States); Advanced Process Combinatorics, West Lafayette, IN (United States); Rardin, Ron [Department of Industrial Engineering, Purdue University, West Lafayette, IN (United States); Baxter, Larry [Advanced Process Combinatorics, West Lafayette, IN (United States); Thai, Van [Radiation Oncology, Indiana University, Indianapolis, IN (United States); Langer, Mark [Radiation Oncology, Indiana University, Indianapolis, IN (United States)]. E-mail: mlanger@iupui.edu

2004-12-01T23:59:59.000Z

49

Multiple target laser ablation system  

DOE Patents (OSTI)

A laser ablation apparatus and method are provided in which multiple targets consisting of material to be ablated are mounted on a movable support. The material transfer rate is determined for each target material, and these rates are stored in a controller. A position detector determines which target material is in a position to be ablated, and then the controller controls the beam trigger timing and energy level to achieve a desired proportion of each constituent material in the resulting film.

Mashburn, Douglas N. (Knoxville, TN)

1996-01-01T23:59:59.000Z

50

Accelerator target  

DOE Patents (OSTI)

A target includes a body having a depression in a front side for holding a sample for irradiation by a particle beam to produce a radioisotope. Cooling fins are disposed on a backside of the body opposite the depression. A foil is joined to the body front side to cover the depression and sample therein. A perforate grid is joined to the body atop the foil for supporting the foil and for transmitting the particle beam therethrough. A coolant is circulated over the fins to cool the body during the particle beam irradiation of the sample in the depression.

Schlyer, David J. (Bellport, NY); Ferrieri, Richard A. (Patchogue, NY); Koehler, Conrad (Miller Place, NY)

1999-01-01T23:59:59.000Z

51

Accelerator target  

DOE Patents (OSTI)

A target includes a body having a depression in a front side for holding a sample for irradiation by a particle beam to produce a radioisotope. Cooling fins are disposed on a backside of the body opposite the depression. A foil is joined to the body front side to cover the depression and sample therein. A perforate grid is joined to the body atop the foil for supporting the foil and for transmitting the particle beam therethrough. A coolant is circulated over the fins to cool the body during the particle beam irradiation of the sample in the depression. 5 figs.

Schlyer, D.J.; Ferrieri, R.A.; Koehler, C.

1999-06-29T23:59:59.000Z

52

Minimum wear tube support hole design  

DOE Patents (OSTI)

A minimum-wear through-bore (16) is defined within a heat exchanger tube support plate (14) so as to have an hourglass configuration as determined by means of a constant radiused surface curvature (18) as defined by means of an external radius (R3), wherein the surface (18) extends between the upper surface (20) and lower surface (22) of the tube support plate (14). When a heat exchange tube (12) is disposed within the tube support plate (14) so as to pass through the through-bore (16), the heat exchange tube (12) is always in contact with a smoothly curved or radiused portion of the through-bore surface (16) whereby unacceptably excessive wear upon the heat exchange tube (12), as normally developed by means of sharp edges, lands, ridges, or the like conventionally part of the tube support plates, is eliminated or substantially reduced.

Glatthorn, Raymond H. (St. Petersburg, FL)

1986-01-01T23:59:59.000Z

53

Geometric Complexity and Minimum Description Length Principle  

E-Print Network (OSTI)

The question of how one should decide among competing explanations of data is at the heart of the scientific enterprise. Quantitative methods of selecting among models have been advanced over the years without an underlying theoretical framework to guide the enterprise and evaluate new developments. In this paper, we show that differential geometry provides a unified understanding of the model selection problem. Foremost among its contributions is a reconceptualization of the problem as one of counting probability distributions. This reconceptualization naturally leads to development of a "geometric" complexity measure, which turns out to be equal to the Minimum Description Length (MDL) complexity measure Rissanen (1996) recently proposed. We demonstrate an application of the geometric complexity measure to model selection in cognitive psychology, with models of cognitive modeling in three different areas (psychophysics, information integration, categorization).

In Jae Myung; Shaobo Zhang; Mark A. Pitt

1999-01-01T23:59:59.000Z

54

Independent Oversight Targeted Review, Sandia National Laboratories -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Targeted Review, Sandia National Laboratories Targeted Review, Sandia National Laboratories - November 2013 Independent Oversight Targeted Review, Sandia National Laboratories - November 2013 December 2013 Targeted Review of Activity-Level Implementation of Radiological Controls at Sandia National Laboratories This report documents the results of an independent oversight targeted review of radiological protection program activity-level implementation for Sandia National Laboratories (SNL), Technical Area V facilities. SNL is managed by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, under contract to the Department of Energy (DOE) and is overseen by the National Nuclear Security Administration and its Sandia Field Office. This targeted review was performed at SNL September 23-27,

55

The Process of Fixing the British National Minimum Wage, 1997-2007  

E-Print Network (OSTI)

to negotiate, with embedded mediation, a level of minimum wage that has been not only 19 acceptable to government but also, at time of writing, overwhelmingly benign in its economic and social impact. The author is grateful for the comments of David...

Brown, William

56

Building Information Modeling - A Minimum Mathematical Configuration  

E-Print Network (OSTI)

In the current context, the standardization of building construction is not limited to a specific country or to a specific building code. Trade globalization has emphasized the need for standardization in the process of exchange of design information, whether it is in the form of drawings or documents. Building Information Modeling is the latest transformational technology that supports interactive development of design information for buildings. No single Building Information Modeling software package is used in the Architecture Engineering Construction and Facilities Management industries, which is strength as new ideas develop, but a hindrance as the new ideas flow at a different pace into the various programs. The standards divergence of various software results in a limited ability to exchange data between and within projects, especially one sees the difficulty in moving data from one program to another. The Document eXchange File format represents an early attempt to standardize the exchange of drawing information by Autodesk. However, the data was limited to geometric data required for the production of plotted drawings. Metadata in a Building Information Model provides a method to add information to the basic geometric configuration provided in a Document eXchange File. Building Information Model programs use data structures to define smart objects that encapsulate building data in a searchable and robust format. Due to the complexity of building designs eXtensible Markup Language schemas of three dimensional models are often large files that can contain considerable amounts of superfluous information. The aim of this research is to exclude all the superfluous information from the design information and determine the absolute minimum information required to execute the construction of a project. A plain concrete beam element was used as the case study for this research. The results show that a minimal information schema can be developed for a simple building element. Further research is required on more complex elements.

Bhandare, Ruchika

2012-08-01T23:59:59.000Z

57

Hazardous Waste Minimum Distance Requirements (Connecticut) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Minimum Distance Requirements (Connecticut) Minimum Distance Requirements (Connecticut) Hazardous Waste Minimum Distance Requirements (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations set minimum distance requirements between certain types of facilities that generate, process, store, and dispose of hazardous waste

58

Rules Establishing Minimum Standards Relating to Location, Design...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to...

59

Microbial metatranscriptomics in a permanent marine oxygen minimum zone  

E-Print Network (OSTI)

Simultaneous characterization of taxonomic composition, metabolic gene content and gene expression in marine oxygen minimum zones (OMZs) has potential to broaden perspectives on the microbial and biogeochemical dynamics ...

Stewart, Frank J.

60

Study on optimal train movement for minimum energy consumption.  

E-Print Network (OSTI)

?? The presented thesis project is a study on train energy consumption calculation and optimal train driving strategies for minimum energy consumption. This study is (more)

Gkortzas, Panagiotis

2013-01-01T23:59:59.000Z

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


61

Estimate of Cost-Effective Potential for Minimum Efficiency Performanc...  

NLE Websites -- All DOE Office Websites (Extended Search)

Cost-Effective Potential for Minimum Efficiency Performance Standards in 13 Major World Economies Energy Savings, Environmental and Financial Impacts Title Estimate of...

62

Minimum Concave Cost Flow Over a Grid Network  

E-Print Network (OSTI)

Oct 12, 2012 ... Abstract The minimum concave cost network flow problem ... a grid network with a general nonnegative separable concave cost function.

63

Minimum cost subset selection with two competing agents  

E-Print Network (OSTI)

Nov 11, 2010 ... Minimum cost subset selection with two competing agents. Claudia Marini( nicosia ***at*** dia.uniroma3.it) Gaia Nicosia(nicosia ***at***...

64

Minimum Concave Cost Flow Over a Grid Network  

E-Print Network (OSTI)

Oct 12, 2012 ... Abstract: The minimum concave cost network flow problem (MCCNFP) is NP- hard, but efficient polynomial-time algorithms exist for some...

65

Minimum cost subset selection with two competing agents  

E-Print Network (OSTI)

do not require qualified personnel, or when internal costs proportional to skills are incurred .... In conclusion, we tackle four different versions of the minimum cost...

66

An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts  

E-Print Network (OSTI)

Mar 20, 2008 ... Abstract: The Minimum Capacity s-t Cut Problem (Min Cut) is an intensively studied problem in combinatorial optimization. In this paper, we...

67

Optimization Online - Guaranteed Minimum-Rank Solutions of ...  

E-Print Network (OSTI)

Jun 28, 2007 ... Guaranteed Minimum-Rank Solutions of Linear Matrix Equations via Nuclear Norm Minimization. Benjamin Recht(brecht ***at*** caltech.edu)

68

On the complexity of maximizing the minimum Shannon capacity in ...  

E-Print Network (OSTI)

Jan 18, 2010 ... On the complexity of maximizing the minimum Shannon capacity in wireless networks by joint channel assignment and power allocation.

69

Short title: STOCHASTIC VARIATIONAL APPROACH TO MINIMUM UNCERTAINTY  

E-Print Network (OSTI)

We introduce a new variational characterization of Gaussian diffusion processes as minimum uncertainty states. We then define a variational method constrained by kinematics of diffusions and Schrdinger dynamics to seek states of local minimum uncertainty for general non-harmonic potentials. PACS numbers:03.65.-w, 03.65.Ca, 03.65.Bz 1.

Fabrizio Illuminati; Lorenza Viola

1995-01-01T23:59:59.000Z

70

Characterization of imaging phone cameras using minimum description length principle  

Science Conference Proceedings (OSTI)

In this paper, a new Minimum Description Length (MDL) approach for the characterization of a mobile phone's color camera is presented. The use of high-order polynomials, Fourier sine series, and artificial neural networks (ANN) for solving this problem ... Keywords: artificial neural network, high-order polynomial, imaging mobile phone, minimum description length

Adrian Burian; Aki Happonen; Mihaela Cirlugea

2008-04-01T23:59:59.000Z

71

Theoretical Minimum Energy Use of a Building HVAC System  

E-Print Network (OSTI)

This paper investigates the theoretical minimum energy use required by the HVAC system in a particular code compliant office building. This limit might be viewed as the "Carnot Efficiency" for HVAC system. It assumes that all ventilation and air conditioning in the building are provided using the minimum energy value that does not violate physical law.

Tanskyi, O.

2011-01-01T23:59:59.000Z

72

Underwater vehicles: The minimum time problem Department of Mathematics  

E-Print Network (OSTI)

Underwater vehicles: The minimum time problem M. Chyba Department of Mathematics 2565 McCarthy Mall for a class of underwater vehicles. We focus on the situation of initial and final configurations at rest In this paper we pursue the analysis of the minimum time problem for a special class of underwater vehicles, see

Sontag, Eduardo

73

Underwater vehicles: The minimum time problem Department of Mathematics  

E-Print Network (OSTI)

Underwater vehicles: The minimum time problem M. Chyba Department of Mathematics 2565 McCarthy Mall for a class of underwater vehicles. We focus on the situation of initial and final configurations at rest the analysis of the minimum time problem for a special class of underwater vehicles, see [5], [6] for previous

Sussmann, Hector

74

Double iterative optimisation for metabolic network-based drug target identification  

Science Conference Proceedings (OSTI)

The goal of drug discovery is to find molecules that manipulate enzymes in order to increase or decrease the production of desired compounds while incurring minimum side-effects. An important part of this problem is the identification of the target ... Keywords: E coli, bioinformatics, data mining, drug discovery, drug target identification, iterative optimisation, metabolic networks, target enzymes

Bin Song; Padmavati Sridhar; Tamer Kahveci; Sanjay Ranka

2009-05-01T23:59:59.000Z

75

Target assistance for subtly balancing competitive play  

Science Conference Proceedings (OSTI)

In games where skills such as targeting are critical to winning, it is difficult for players with different skill levels to have a competitive and engaging experience. Although several mechanisms for accommodating different skill levels have been proposed, ... Keywords: competition, game balance, game design, target assistance

Scott Bateman; Regan L. Mandryk; Tadeusz Stach; Carl Gutwin

2011-05-01T23:59:59.000Z

76

Rules Establishing Minimum Standards Relating to Location, Design,  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Rules Establishing Minimum Standards Relating to Location, Design, Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) Rules Establishing Minimum Standards Relating to Location, Design, Construction, and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Rhode Island Program Type Environmental Regulations

77

Polynomial Time Algorithms for Minimum Energy Scheduling  

E-Print Network (OSTI)

The aim of power management policies is to reduce the amount of energy consumed by computer systems while maintaining satisfactory level of performance. One common method for saving energy is to simply suspend the system during the idle times. No energy is consumed in the suspend mode. However, the process of waking up the system itself requires a certain fixed amount of energy, and thus suspending the system is beneficial only if the idle time is long enough to compensate for this additional energy expenditure. In the specific problem studied in the paper, we have a set of jobs with release times and deadlines that need to be executed on a single processor. Preemptions are allowed. The processor requires energy L to be woken up and, when it is on, it uses one unit of energy per one unit of time. It has been an open problem whether a schedule minimizing the overall energy consumption can be computed in polynomial time. We solve this problem in positive, by providing an O(n^5)-time algorithm. In addition we pr...

Baptiste, Philippe; Durr, Christoph

2009-01-01T23:59:59.000Z

78

Trends of Maximum and Minimum Temperatures in Northern South America  

Science Conference Proceedings (OSTI)

This paper presents the results of testing the homogeneity of the basic data used in this study, that is, the mean monthly maximum and minimum temperature (as derived from daily observations) of several long-term climatological stations of ...

Ramon A. Quintana-Gomez

1999-07-01T23:59:59.000Z

79

Theory and Applications of the Minimum Spanning Tree Rank Histogram  

Science Conference Proceedings (OSTI)

A minimum spanning tree (MST) rank histogram (RH) is a multidimensional ensemble reliability verification tool. The construction of debiased, decorrelated, and covariance-homogenized MST RHs is described. Experiments using Euclidean L2, variance, ...

Daniel Gombos; James A. Hansen; Jun Du; Jeff McQueen

2007-04-01T23:59:59.000Z

80

Minimum Wage Effects Across State Borders: Estimates Using Contiguous Counties  

E-Print Network (OSTI)

on earnings and employment in restaurants and other low-wageOur primary focus is on restaurants, since they are the mostof minimum wages on restaurant earnings, but the local

Dube, Andrajit; Lester, T. William; Reich, Michael

2010-01-01T23:59:59.000Z

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


81

Minimum Stream Flow and Water Sale Contracts (Indiana)  

Energy.gov (U.S. Department of Energy (DOE))

The commission may provide certain minimum quantities of stream flow or sell water on a unit pricing basis for water supply purposes from the water supply storage in reservoir impoundments or parts...

82

Minimum Purchase Price Regulations (Prince Edward Island, Canada)  

Energy.gov (U.S. Department of Energy (DOE))

The Minimum Purchase Price Regulations establish the price which utilities must pay for power produced by large-scale renewable energy generators that is those capable of producing more than 100...

83

What Solar Oscillation Tell us About the Solar Minimum  

E-Print Network (OSTI)

The availability of continuous helioseismic data for two consecutive solar minima has provided a unique opportunity to study the changes in the solar interior that might have led to this unusual minimum. We present preliminary analysis of inter mediate-degree mode frequencies in the 3 mHz band during the current period of minimal solar activity and show that the mode frequencies are significantly lower than those during the previous activity minimum. Our analysis do not show any signature of the beginning of cycle 24 till the end of 2008. In addition, the zonal and meridional flow patterns inferred from inverting frequencies also hint for a delayed onset of a new cycle. The estimates of travel time are higher than the previous minimum confirming a relatively weak solar activity during the current minimum.

Jain, Kiran; Burtseva, O; Hernandez, I Gonzalez; Hill, F; Howe, R; Kholikov, S; Komm, R; Leibacher, J

2010-01-01T23:59:59.000Z

84

Selection of minimum earthquake intensity in calculating pipe failure probabilities  

SciTech Connect

In a piping reliability analysis, it is sometimes necessary to specify a minimum ground motion intensity, usually the peak acceleration, below which the ground motions are not considered as earthquakes and, hence, are neglected. The calculated probability of failure of a piping system is dependent on this selected minimum earthquake intensity chosen for the analysis. A study was conducted to determine the effects of the minimum earthquake intensity on the probability of pipe failure. The results indicated that the probability of failure of the piping system is not very sensitive to the variations of the selected minimum peak ground acceleration. However, it does have significant effects on various scenarios that make up the system failure.

Lo, T.Y.

1985-01-01T23:59:59.000Z

85

An Efficient Algorithm for Computing Robust Minimum Capacity st Cuts  

E-Print Network (OSTI)

Apr 3, 2008 ... The Minimum Capacity s-t Cut Problem (Min Cut) is an intensively ... In this paper, we study Min Cut when arc capacities are uncertain but...

86

Minimum carbon tax level needed to prompt a widespread shift to nuclear power  

E-Print Network (OSTI)

Carbon dioxide is suspected to be a major contributor to global warming. In the United States, nearly 70% of electricity is produced using coal or natural gas, both of which emit carbon dioxide into the environment. Nuclear ...

Thornton, Katherine C. (Katherine Claire)

2007-01-01T23:59:59.000Z

87

Magnetically attached sputter targets  

DOE Patents (OSTI)

An improved method and assembly for attaching sputtering targets to cathode assemblies of sputtering systems which includes a magnetically permeable material is described. The magnetically permeable material is imbedded in a target base that is brazed, welded, or soldered to the sputter target, or is mechanically retained in the target material. Target attachment to the cathode is achieved by virtue of the permanent magnets and/or the pole pieces in the cathode assembly that create magnetic flux lines adjacent to the backing plate, which strongly attract the magnetically permeable material in the target assembly. 11 figures.

Makowiecki, D.M.; McKernan, M.A.

1994-02-15T23:59:59.000Z

88

Minimum Stream Flow Standards (Connecticut) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) Minimum Stream Flow Standards (Connecticut) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Water Buying & Making Electricity Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection These regulations apply to all dams and structures which impound or divert waters on rivers or their tributaries, with some exceptions. The

89

Compliance of clinical trial registries with the World Health Organization minimum data set: a survey  

E-Print Network (OSTI)

Organization minimum data set: a survey Lorenzo P Moja* 1 ,of the WHO minimum data set. Methods: A retrospectivethe launch of the WHO minimum data set seemed to positively

2009-01-01T23:59:59.000Z

90

Targets for Precision Measurements  

E-Print Network (OSTI)

The general properties needed in targets (sources) for high precision, high accuracy measurements are reviewed. The application of these principles to the problem of developing targets for the Fission TPC is described. Longer term issues, such as the availability of actinide materials, improved knowledge of energy losses and straggling and the stability of targets during irradiation are also discussed.

W. Loveland; L. Yao; David M. Asner; R. G. Baker; J. Bundgaard; E. Burgett; M. Cunningham; J. Deaven; D. L. Duke; U. Greife; S. Grimes; M. Heffer; T. Hill; D. Isenhower; J. L. Klay; V. Kleinrath; N. Kornilov; A. B. Laptev; T. N. Massey; R. Meharchand; H. Qu; J. Ruz; S. Sangiorgio; B. Selhan; L. Snyder; S. Stave; G. Tatishvili; R. T. Thornton; F. Tovesson; D. Towell; R. S. Towell; S. Watson; B. Wendt; L. Wood

2013-03-09T23:59:59.000Z

91

Recent State Minimum Temperature Records in the Midwest  

Science Conference Proceedings (OSTI)

State minimum temperature records were set or tied in Indiana (?37.8C) and Kentucky (?38.3C) in January 1994, and in Illinois (?37.2C), Iowa (?43.9C), Minnesota (?51.1C), and Wisconsin (?48.3C) in February 1996. The veracity of these ...

Thomas W. Schmidlin

1997-01-01T23:59:59.000Z

92

Minimum-outage broadcast in wireless networks with fading channels  

Science Conference Proceedings (OSTI)

We consider the problem of cooperative broadcasting for minimum outage in wireless networks. We consider wireless multihop broadcast as a set of transmitters that transmit in a certain order. The receiving nodes are able to combine all the previous transmissions ... Keywords: broadcast, multicast, outage, wireless networks

Tolga Girici; Gulizar Duygu Kurt

2010-07-01T23:59:59.000Z

93

Power Allocations in Minimum-Energy SER Constrained Cooperative Networks  

E-Print Network (OSTI)

1 Power Allocations in Minimum-Energy SER Constrained Cooperative Networks Behrouz Maham-Spring). Behrouz Maham and Are Hjørungnes are with UNIK ­ University Graduate Center, University of Oslo, Norway. Behrouz Maham is currently a visiting scholar at Department of Electrical Engineering, Stanford

Paris-Sud XI, Université de

94

CONSTRAINED MINIMUM ENTROPY AND MAXIMUM NEGENTROPY BLIND DECONVOLUTION AND EQUALIZATION  

E-Print Network (OSTI)

CONSTRAINED MINIMUM ENTROPY AND MAXIMUM NEGENTROPY BLIND DECONVOLUTION AND EQUALIZATION Seungjin on the variance of decon­ volved signal. We also consider the maximum negen­ tropy principle and show that the CME version, without any prior knowledge (such as channel impulse response, training data). As the demand

Choi, Seungjin

95

A faster distributed protocol for constructing a minimum spanning tree  

Science Conference Proceedings (OSTI)

This paper studies the problem of constructing a minimum-weight spanning tree (MST) in a distributed network. This is one of the most important problems in the area of distributed computing. There is a long line of gradually improving protocols ...

Michael Elkin

2004-01-01T23:59:59.000Z

96

Minimum cost multiple multicast network coding with quantized rates  

Science Conference Proceedings (OSTI)

In this paper, we consider multiple multicast sessions with intra-session network coding where rates over all links are integer multiples of a basic rate. Although having quantized rates over communication links is quite common, conventional minimum ... Keywords: Decomposition algorithm, Multicast networks, Network coding

M. A. Raayatpanah; H. Salehi Fathabadi; B. H. Khalaj; S. Khodayifar

2013-04-01T23:59:59.000Z

97

Minimum-mirror-area single-stage solar concentrators  

SciTech Connect

A means of generating a comcentrating mirror of minimum size for a given average flux-concentration output is outlined. The method is useful for acceptance angles typical of those required for tilting and tracking solar concentrators and can result in substantial cost savings when expensive mirrors (i.e.,glass) are used. Comparisons are made with compound parabolic concentrators.

Mills, D.; Harting, E.; Giutronich, J.E.; Cellich, W.; Morton, A.; Walker, I.

1980-12-01T23:59:59.000Z

98

THE SOLAR CYCLE AT THE MAUNDER MINIMUM EPOCH  

E-Print Network (OSTI)

THE SOLAR CYCLE AT THE MAUNDER MINIMUM EPOCH HIROKO MIYAHARA, DMITRY SOKOLOFF and ILYA G. USOSKIN Solar-Terrestrial Environmental Laboratory, Nagoya University Nagoya, Aichi 464-8601, Japan Department minima, when the solar dynamo was in a special mode. We review available sets of direct and indirect data

Usoskin, Ilya G.

99

Target Database | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

Science & Engineering Applications Target Database The Target database and analytical pipeline provides bioinformatics support and selection of protein targets of biomedical...

100

HYDROGEN ISOTOPE TARGETS  

DOE Patents (OSTI)

The design of targets for use in the investigation of nuclear reactions of hydrogen isotopes by bombardment with accelerated particles is described. The target con struction eomprises a backing disc of a metal selected from the group consisting of molybdenunn and tungsten, a eoating of condensed titaniunn on the dise, and a hydrogen isotope selected from the group consisting of deuterium and tritium absorbed in the coatiag. The proeess for preparing these hydrogen isotope targets is described.

Ashley, R.W.

1958-08-12T23:59:59.000Z

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


101

MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS  

NLE Websites -- All DOE Office Websites (Extended Search)

MINIMUM EMITTANCE LATTICE FOR MINIMUM EMITTANCE LATTICE FOR SYNCHROTRON RADIATION STORAGE RINGS 1. C. Teng ANL/FNAL LS-17 L. Teng March 18, 1985 The natural emittance of an electron beam in a storage ring is given by (see e.g., M. Sands, SLAC 21) (1) where Cq =~~= 3.832 x 10-l3 m 32/3 mc J x partition factor in the bending plane y = total energy in mc 2 uni ts p orbit radius in bending magnets (assumed the same in all magne ts) H yn 2 - + 2ann ' + Bn I 2 ( a, B, Y = betatron functions ) n, n I dispersion functions <> = averaging over bending magnets We shall calculate for each bending magnet, then average over all magnets. 2 A. General Expression for H This can be calculated in a straightforward manner, but we can save a great deal of arithmetic with some preliminary formal analytical

102

Minimum/maximum excitation limiter performance goals for small generation  

SciTech Connect

Small generators connected to the utility system often act as followers as they tend to follow system bus voltage variations. For the lack of kVA capacity, small machines tend to be susceptible to becoming over or under excited (excessive Vars in or Vars out of the generator) as the voltage regulator tries to maintain its setpoint with variations in system bus voltage. Minimum and maximum excitation limiters are utilized to limit the voltage regulator characteristic response to system bus voltage changes, that can otherwise result in machine overheating and/or pulling out of synchronization. This paper reviews the operating performance of minimum and maximum excitation limiters used on small machines, and provides the user typical performance expectations. The examples will highlight both main field and exciter field applications. Lastly, conditions will be reviewed that may occur during excitation limiter initial startup that can affect their ability to be initially tuned.

Eberly, T.W.; Schaefer, R.C.

1995-12-01T23:59:59.000Z

103

Impact of Minimum Load Operation on Steam Turbines  

Science Conference Proceedings (OSTI)

Some utilities, as part of a fleet management strategy, are keeping baseload-design plants that are not competitive for 24/7 dispatch at minimum loads to increase their ability to respond to changing demand. Units being operated this way face some associated risks and may see an additional drop in availability, further exacerbating supply management issues and increasing O&M costs. This report seeks to capture ...

2013-11-05T23:59:59.000Z

104

Minimum weight perfect matching in O(1) parallel time  

E-Print Network (OSTI)

Consider a 2-D square array of qubits of infinite extent. We provide a formal proof that the infinite size minimum weight perfect matching problem associated with running a particular class of topological quantum error correction codes on this array can be exactly solved with a corresponding infinite 2-D square array of classical computing devices in constant average time per round of error detection provided physical error rates are below fixed nonzero values, and other physically reasonable assumptions.

Austin G. Fowler

2013-07-06T23:59:59.000Z

105

Target Cost Management Strategy  

E-Print Network (OSTI)

Target cost management (TCM) is an innovation of Japanese management accounting system and by common sense has been considered with great interest by practitioners. Nowadays, TCM related

Okano, Hiroshi

1996-01-01T23:59:59.000Z

106

Electron, Photon, and Positron Scattering Dynamics of Complex Molecular Targets  

E-Print Network (OSTI)

Electron scattering cross sections have been computed for pyridine and pyrimidine using the static-exchange approximation with model potential to account for dynamic electron correlation. To obtain well-converged orbitals, we have expanded all partial waves to a maximum angular momentum of l = 60 for both targets. We have obtained total cross sections for electron scattering energies to 20 eV. Both targets display similar features, namely a dipole-induced increase in the integrated cross section at scattering energies below 5 eV, and peaks corresponding to resonances in b1, a2, and b1 symmetries. These resonances were investigated through a Siegert eigenstate analysis and Breit-Wigner fit of the SECP eigenphase sums. They were also compared to the virtual orbitals obtained from a minimum basis set Hartree-Fock calculation on both targets. We consider electron scattering resonances from cis-diamminedichloroplatinum, [Pt(NH3)2Cl2], the ligand molecular species Cl2 (1Sigma+g ), and the isolated transition metal center Pt in a nondegenerate atomic state (1S) at the SECP level of theory. As a rigorous comparison to the single-state, single-configuration SECP level results of these smaller, yet electron dense targets, we have also considered scattering from ground state Cl2 and Pt in the 1S and 3D states in the multichannel configuration-interaction (MCCI) approximation originally developed for photoionization for scattering up to 10 eV. Photoionization cross sections and angular distributions in the recoil frame (RFPAD) and molecular frame (MFPAD) have been computed for inner-shell C 1s and Cl 2p ionization from the chloroalkanes chloromethane and chloroethane, with ionization leading to a variety of ionic fragment states. We have also computed valence level ionization from the nitro molecule nitromethane CH3NO2 leading to the dissociation of the CN bond. All of these calculations were performed in the frozen-core Hartree-Fock approximation. Even at this level of theory, we obtain computed results that compare well to the photoelectronphotoion coincidence measurements. The fullerene C20 is the smallest fullerene predicted to exist, with most relevant structural calculations suggesting the reduction of the icosahedral symmetry into one in which the target species possesses at maximum only a dihedral axis. We have computed positron scattering cross sections for the molecule in two low-symmetry structural isomers Ci and C2, within the HF approximation. Density functional expressions were used to incorporate important positron-electron interactions within the calculation. We have found similar cross sections and resonance features for both isomers, including a positron scattering resonance whose density is found within the framework of the fullerene cluster.

Carey, Ralph

2012-05-01T23:59:59.000Z

107

An Obstacle-avoiding Minimum Variation B-spline Problem  

E-Print Network (OSTI)

We study the problem of computing a planar curve, restricted to lie between two given polygonal chains, such that the integral of the square of arc-length derivative of curvature along the curve is minimized. We introduce the Minimum Variation B-spline problem which is a linearly constrained optimization problem over curves defined by Bspline functions only. An empirical investigation indicates that this problem has one unique solution among all uniform quartic B-spline functions. Furthermore, we prove that, for any B-spline function, the convexity properties of the problem are preserved subject to a scaling and translation of the knot sequence defining the B-spline. 1

Tomas Berglund; Inge Sderkvist

2003-01-01T23:59:59.000Z

108

Target | Open Energy Information  

Open Energy Info (EERE)

Target Target Jump to: navigation, search Name Target Address 1000 Nicollet Mall Place Minneapolis, MN Zip 55440 Website http://www.target.com Coordinates 44.9739366°, -93.2750493° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":44.9739366,"lon":-93.2750493,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

109

Multiple shell fusion targets  

DOE Patents (OSTI)

Multiple shell fusion targets for use with electron beam and ion beam implosion systems are described. The multiple shell targets are of the low-power type and use a separate relatively low Z, low density ablator at large radius for the outer shell, which reduces the focusing and power requirements of the implosion system while maintaining reasonable aspect ratios. The targets use a high Z, high density pusher shell placed at a much smaller radius in order to obtain an aspect ratio small enough to protect against fluid instability. Velocity multiplication between these shells further lowers the power requirements. Careful tuning of the power profile and intershell density results in a low entropy implosion which allows breakeven at low powers. For example, with ion beams as a power source, breakeven at 10-20 Terrawatts with 10 MeV alpha particles for imploding a multiple shell target can be accomplished.

Lindl, J.D.; Bangerter, R.O.

1975-10-31T23:59:59.000Z

110

Minimum bias and underlying event studies at CDF  

SciTech Connect

Soft, non-perturbative, interactions are poorly understood from the theoretical point of view even though they form a large part of the hadronic cross section at the energies now available. We review the CDF studies on minimum-bias ad underlying event in p{bar p} collisions at 2 TeV. After proposing an operative definition of 'underlying event', we present part of a systematic set of measurements carried out by the CDF Collaboration with the goal to provide data to test and improve the QCD models of hadron collisions. Different analysis strategies of the underlying event and possible event topologies are discussed. Part of the CDF minimum-bias results are also presented: in this sample, that represent the full inelastic cross-section, we can test simultaneously our knowledge of all the components that concur to form hadronic interactions. Comparisons with MonteCarlo simulations are always shown along with the data. These measurements will also contribute to more precise estimates of the soft QCD background of high-p{sub T} observables.

Moggi, Niccolo; /INFN, Bologna

2010-01-01T23:59:59.000Z

111

The elusive minimum viable population size for white sturgeon  

SciTech Connect

Biological conservation of sturgeon populations is a concern for many species. Those responsible for managing the white sturgeon (Acipenser transmontanus) and similar species are interested in identifying extinction thresholds to avoid. Two thresholds that exist in theory are the minimum viable population size (MVP) and minimum amount of suitable habitat. In this paper, we present both model and empirical estimates of these thresholds. We modified a population viability analysis (PVA) model for white sturgeon to include two new Allee mechanisms. Despite this, PVA-based MVP estimates were unrealistically low compared with empirical estimates unless opportunities for spawning were assumed to be less frequent. PVA results revealed a trade-off between MVP and habitat thresholds; smaller populations persisted in longer river segments and vice versa. Our empirical analyses suggested (1) a MVP range based on population trends from 1,194 to 27,700 individuals, and (2) a MVP estimate of 4,000 individuals based on recruitment. Long-term historical population surveys are needed for more populations to pinpoint an MVP based on trends, whereas the available data were sufficient to estimate MVP based on recruitment. Beyond the MVP, we developed a hierarchical model for population status based on empirical data. Metapopulation support was the most important predictor of population health, followed by the length of free-flowing habitat, with habitat thresholds at 26 and 150 km. Together, these results suggest that habitat and connectivity are important determinants of population status that likely influence the site-specific MVP thresholds.

Jager, Yetta [ORNL; Lepla, Ken B. [Idaho Power Company; Van Winkle, Webb [Van Windle Environmental Consulting; James, Mr Brad [Washington Department of Fish and Wildlife; McAdam, Dr Steve [University of British Columbia, Vancouver

2010-01-01T23:59:59.000Z

112

Argus target chamber  

SciTech Connect

A target chamber for application in the laser fusion program must satisfy some very basic requirements. (1) Provide a vacuum on the order of 10$sup -6$ torr. (2) Support a microscopically small target in a fixed point in space and verify its location within 5 micrometers. (3) Contain an adjustable beam focusing system capable of delivering a number of laser beams onto the target simultaneously, both in time and space. (4) Provide access for diagnostics to evaluate the results of target irradiation. (5) Have flexibility to allow changes in targets, focusing optics and number of beams. The ARGUS laser which is now under construction at LLL will have a target chamber which meets these requirements in a simple economic manner. The chamber and auxiliary equipment are described, with reference to two double beam focusing systems; namely, lenses and ellipsoidal mirrors. Provision is made for future operation with four beams, using ellipsoidal mirrors for two-sided illumination and lens systems for tetragonal and tetrahedral irradiation. (auth)

Rienecker, F. Jr.; Glaros, S.S.; Kobierecki, M.

1975-11-12T23:59:59.000Z

113

Computational and experimental investigation of magnetized target fusion  

SciTech Connect

In Magnetized Target Fusion (MTF), a preheated and magnetized target plasma is hydrodynamically compressed to fusion conditions. Because the magnetic field suppresses losses by electron thermal conduction in the fuel during the target implosion heating process, the compression may be over a much longer time scale than in traditional inertial confinement fusion (ICF). Bigger targets and much lower initial target densities than in ICF can be used, reducing radiative energy losses. Therefore, ``liner-on-plasma`` compressions, driven by relatively inexpensive electrical pulsed power, may be practical. Potential MTF target plasmas must meet minimum temperature, density, and magnetic field starting conditions, and must remain relatively free of high-Z radiation-cooling-enhancing contaminants. At Los Alamos National Laboratory, computational and experimental research is being pursued into MTF target plasmas, such as deuterium-fiber-initiated Z-pinches, and the Russian-originated MAGO plasma. In addition, liner-on-plasma compressions of such target plasmas to fusion conditions are being computationally modeled, and experimental investigation of such heavy liner implosions has begun. The status of the research will be presented.

Sheehey, P.T.; Guzik, J.A.; Kirkpatrick, R.C.; Lindemuth, I.R.; Scudder, D.W.; Shlachter, J.S.; Wysocki, F.J.

1996-07-01T23:59:59.000Z

114

The impact of minimum age of employment regulation on child labor and schooling  

E-Print Network (OSTI)

Promoting minimum age of employment regulation has been a centerpiece in child labor policy for the last 15 years. If enforced, minimum age regulation would change the age profile of paid child employment. Using micro-data ...

Edmonds, Eric V

115

A New Perspective on Recent Global Warming: Asymmetric Trends of Daily Maximum and Minimum Temperature  

Science Conference Proceedings (OSTI)

Monthly mean maximum and minimum temperatures for over 50% (10%) of the Northern (Southern) Hemisphere landmass, accounting for 37% of the global landmass, indicate that the rise of the minimum temperature has occurred at a rate three times that ...

Thomas R. Karl; Richard W. Knight; Kevin P. Gallo; Thomas C. Peterson; Philip D. Jones; George Kukla; Neil Plummer; Vyacheslav Razuvayev; Janette Lindseay; Robert J. Charlson

1993-06-01T23:59:59.000Z

116

A simple model for evolution of proteins towards the global minimum of free energy  

E-Print Network (OSTI)

A simple model for evolution of proteins towards the global minimum of free energy Tamar Kaffe-Abramovich and Ron Unger Background: Proteins seem to have their native structure in a global minimum of free energy is in the global minimum of free energy. The aim of this study is to investigate such evolutionary processes

Unger, Ron

117

The quadratic minimum spanning tree problem: A lower bounding procedure and an efficient search algorithm  

Science Conference Proceedings (OSTI)

In this paper we consider the quadratic minimum spanning tree problem (QMSTP) which is known to be NP-hard. Given a complete graph, the QMSTP consists of finding a minimum spanning tree (MST) where interaction costs between pairs of edges are prescribed. ... Keywords: Lagrangian relaxation, Local search, Quadratic minimum spanning tree problem

Temel ncan; Abraham P. Punnen

2010-10-01T23:59:59.000Z

118

Minimum Multicolored Subgraph Problem in Multiplex PCR Primer Set Selection and  

E-Print Network (OSTI)

Minimum Multicolored Subgraph Problem in Multiplex PCR Primer Set Selection and Population is a common generalization of minimum cost multiplex PCR primer set selection and maximum likeli- hood and its variants model two important bioinformatics problems: minimum cost multiplex PCR primer set

Mandoiu, Ion

119

Inflation and Price Level Targeting in a New Keynesian Model  

E-Print Network (OSTI)

wkh ohyho lpsolhg e| XN pdunhw uhdo lqwhuhvw udwhv/ 31:8(1 Zh fdq fdofxodwh wkh uhpdlqlqj sdudphwhuv/ qc Kc Sc +c #16;c ,c #7;cu dqg w lq wxuq1 Iluvw zh kdyh 5 w w #3; Eo n #6;#28; r & #21; g #7; #22; r & 3 c +6158, zkhuh zh kdyh xvhg wkh vwhdg...

Chadha, Jagjit S; Nolan, Charles

2004-06-16T23:59:59.000Z

120

Independent Oversight Targeted Review of Activity-Level Implementation...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

... B-1 i Acronyms ACRR Annular Core Research Reactor AHCF Auxiliary Hot Cell Facility ALARA As Low As Reasonably Achievable CFR Code of Federal Regulations...

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


121

Foam encapsulated targets  

SciTech Connect

Foam encapsulated laser-fusion targets wherein a quantity of thermonuclear fuel is embedded in low density, microcellular foam which serves as an electron conduction channel for symmetrical implosion of the fuel by illumination of the target by one or more laser beams. The fuel, such as DT, is contained within a hollow shell constructed of glass, for example, with the foam having a cell size of preferably no greater than 2 .mu.m, a density of 0.065 to 0.6.times.10.sup.3 kg/m.sup.3, and external diameter of less than 200 .mu.m.

Nuckolls, John H. (Livermore, CA); Thiessen, Albert R. (Livermore, CA); Dahlbacka, Glen H. (Livermore, CA)

1983-01-01T23:59:59.000Z

122

The turbulent cascade and proton heating in the solar wind during solar minimum  

Science Conference Proceedings (OSTI)

Solar wind measurements at 1 AU during the recent solar minimum and previous studies of solar maximum provide an opportunity to study the effects of the changing solar cycle on in situ heating. Our interest is to compare the levels of activity associated with turbulence and proton heating. Large-scale shears in the flow caused by transient activity are a source that drives turbulence that heats the solar wind, but as the solar cycle progresses the dynamics that drive the turbulence and heat the medium are likely to change. The application of third-moment theory to Advanced Composition Explorer (ACE) data gives the turbulent energy cascade rate which is not seen to vary with the solar cycle. Likewise, an empirical heating rate shows no significan changes in proton heating over the cycle.

Coburn, Jesse T.; Smith, Charles W.; Vasquez, Bernard J. [Physics Department and Space Science Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, New Hampshire (United States); Stawarz, Joshua E. [Department of Astrophysical and Planetary Sciences, University of Colorado at Boulder, Boulder, Colorado (United States); Forman, Miriam A. [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York (United States)

2013-06-13T23:59:59.000Z

123

Observed Minimum Illuminance Threshold for Night Market Vendors in Kenya who use LED Lamps  

Science Conference Proceedings (OSTI)

Creation of light for work, socializing, and general illumination is a fundamental application of technology around the world. For those who lack access to electricity, an emerging and diverse range of LED based lighting products hold promise for replacing and/or augmenting their current fuel-based lighting sources that are costly and dirty. Along with analysis of environmental factors, economic models for total cost-ofownership of LED lighting products are an important tool for studying the impacts of these products as they emerge in markets of developing countries. One important metric in those models is the minimum illuminance demanded by end-users for a given task before recharging the lamp or replacing batteries. It impacts the lighting service cost per unit time if charging is done with purchased electricity, batteries, or charging services. The concept is illustrated in figure 1: LED lighting products are generally brightest immediately after the battery is charged or replaced and the illuminance degrades as the battery is discharged. When a minimum threshold level of illuminance is reached, the operational time for the battery charge cycle is over. The cost to recharge depends on the method utilized; these include charging at a shop at a fixed price per charge, charging on personal grid connections, using solar chargers, and purchasing dry cell batteries. This Research Note reports on the observed"charge-triggering" illuminance level threshold for night market vendors who use LED lighting products to provide general and task oriented illumination. All the study participants charged with AC power, either at a fixed-price charge shop or with electricity at their home.

Johnstone, Peter; Jacobson, Arne; Mills, Evan; Radecsky, Kristen

2009-03-21T23:59:59.000Z

124

Analysis of Minimum Efficiency Performance Standards for Residential General Service Lighting in Chile  

Science Conference Proceedings (OSTI)

Minimum Efficiency Performance Standards (MEPS) have been chosen as part of Chile's national energy efficiency action plan. As a first MEPS, the Ministry of Energy has decided to focus on a regulation for lighting that would ban the sale of inefficient bulbs, effectively phasing out the use of incandescent lamps. Following major economies such as the US (EISA, 2007) , the EU (Ecodesign, 2009) and Australia (AS/NZS, 2008) who planned a phase out based on minimum efficacy requirements, the Ministry of Energy has undertaken the impact analysis of a MEPS on the residential lighting sector. Fundacion Chile (FC) and Lawrence Berkeley National Laboratory (LBNL) collaborated with the Ministry of Energy and the National Energy Efficiency Program (Programa Pais de Eficiencia Energetica, or PPEE) in order to produce a techno-economic analysis of this future policy measure. LBNL has developed for CLASP (CLASP, 2007) a spreadsheet tool called the Policy Analysis Modeling System (PAMS) that allows for evaluation of costs and benefits at the consumer level but also a wide range of impacts at the national level, such as energy savings, net present value of savings, greenhouse gas (CO2) emission reductions and avoided capacity generation due to a specific policy. Because historically Chile has followed European schemes in energy efficiency programs (test procedures, labelling program definitions), we take the Ecodesign commission regulation No 244/2009 as a starting point when defining our phase out program, which means a tiered phase out based on minimum efficacy per lumen category. The following data were collected in order to perform the techno-economic analysis: (1) Retail prices, efficiency and wattage category in the current market, (2) Usage data (hours of lamp use per day), and (3) Stock data, penetration of efficient lamps in the market. Using these data, PAMS calculates the costs and benefits of efficiency standards from two distinct but related perspectives: (1) The Life-Cycle Cost (LCC) calculation examines costs and benefits from the perspective of the individual household; and (2) The National Perspective projects the total national costs and benefits including both financial benefits, and energy savings and environmental benefits. The national perspective calculations are called the National Energy Savings (NES) and the Net Present Value (NPV) calculations. PAMS also calculate total emission mitigation and avoided generation capacity. This paper describes the data and methodology used in PAMS and presents the results of the proposed phase out of incandescent bulbs in Chile.

Letschert, Virginie E.; McNeil, Michael A.; Leiva Ibanez, Francisco Humberto; Ruiz, Ana Maria; Pavon, Mariana; Hall, Stephen

2011-06-01T23:59:59.000Z

125

99TechSpecs-LevelIIIMods.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

EV AMERICA TECHNICAL SPECIFICATIONS Effective October 1, 1999 Prepared by Electric Transportation Applications 1999 EV AMERICA TECHNICAL SPECIFICATIONS 2 MINIMUM VEHICLE REQUIREMENTS For a vehicle to be considered qualified as an EV America-USDOE "Production" level vehicle, it must meet the minimum criteria defined by "shall" terminology utilized in the Specification. [For clarity, the use of the word "Shall" defines minimum requirements, whereas the use of the word "Should" defines design and performance objectives.] Vehicles which cannot meet all of the "Shall" requirements will be considered Prototypes, and will not be considered as having "passed" EV America. The following requirements shall be met by any vehicle before it can receive EV America "Production" level status:

126

Accelerator-based fusion with a low temperature target  

SciTech Connect

Neutron generators are in use in a number of scientific and commercial endeavors. They function by triggering fusion reactions between accelerated ions (usually deuterons) and a stationary cold target (e.g., containing tritium). This setup has the potential to generate energy. It has been shown that if the energy transfer between injected ions and target electrons is sufficiently small, net energy gain can be achieved. Three possible avenues are: (a) a hot target with high electron temperature, (b) a cold non-neutral target with an electron deficiency, or (c) a cold target with a high Fermi energy. A study of the third possibility is reported in light of recent research that points to a new phase of hydrogen, which is hypothesized to be related to metallic hydrogen. As such, the target is considered to be composed of nuclei and delocalized electrons. The electrons are treated as conduction electrons, with the average minimum excitation energy being approximately equal to 40% of the Fermi energy. The Fermi energy is directly related to the electron density. Preliminary results indicate that if the claimed electron densities in the new phase of hydrogen were achieved in a target, the energy transfer to electrons would be small enough to allow net energy gain.

Phillips, R. E.; Ordonez, C. A. [Department of Physics, University of North Texas, Denton, Texas 76203-5017 (United States)

2013-04-19T23:59:59.000Z

127

Targeted radionuclide therapy  

Science Conference Proceedings (OSTI)

Targeted radionuclide therapy (TRT) seeks molecular and functional targets within patient tumor sites. A number of agents have been constructed and labeled with beta, alpha, and Auger emitters. Radionuclide carriers spanning a broad range of sizes; e.g., antibodies, liposomes, and constructs such as nanoparticles have been used in these studies. Uptake, in percent-injected dose per gram of malignant tissue, is used to evaluate the specificity of the targeting vehicle. Lymphoma (B-cell) has been the primary clinical application. Extension to solid tumors will require raising the macroscopic absorbed dose by several-fold over values found in present technology. Methods that may effect such changes include multistep targeting, simultaneous chemotherapy, and external sequestration of the agent. Toxicity has primarily involved red marrow so that marrow replacement can also be used to enhance future TRT treatments. Correlation of toxicities and treatment efficiency has been limited by relatively poor absorbed dose estimates partly because of using standard (phantom) organ sizes. These associations will be improved in the future by obtaining patient-specific organ size and activity data with hybrid SPECT/CT and PET/CT scanners.

Williams, Lawrence E.; DeNardo, Gerald L.; Meredith, Ruby F. [Radiology Division, City of Hope National Medical Center, Duarte, California 91010 (United States); Internal Medicine, University of California Davis Medical Center, 1508 Alhambra Boulevard, Suite 3100, Sacramento, California 95816 (United States); Department of Radiation Oncology, Wallace Tumor Institute WTI No. 117, University of Alabama at Birmingham, Birmingham, Alabama 35294 (United States)

2008-07-15T23:59:59.000Z

128

First SNS Target Replacement  

E-Print Network (OSTI)

· Replacement of the target module was accomplished using only remote handling tooling and procedures (hands operations. Remote Handling Control Room Manipulator Gallery #12;10 Managed by UT-Battelle for the U ­ Interim process fitting leak testing ­ Limitations on remote handling equipment reliability ­ Limitations

McDonald, Kirk

129

SNS Target Systems Operational  

E-Print Network (OSTI)

scheduling conflict with other remote handling work planned for the next shutdown. · The target and PBW integrated monolith and hot cell structures #12;32 Managed by UT-Battelle for the U.S. Department of Energy based on testing at Riken to 1.8 x 105 Gy · Improved neutronic performance and reduced remote handling

McDonald, Kirk

130

On the minimum temperature of the quiet solar chromosphere  

E-Print Network (OSTI)

aims: We aim to provide an estimate of the minimum temperature of the quiet solar chromosphere. methods: We perform a 2D radiation-MHD simulation spanning the upper convection zone to the lower corona. The simulation includes non-LTE radiative transfer and {an equation-of-state that includes non-equilibrium ionization of hydrogen and non-equilibrium H_2 molecule formation}. We analyze the reliability of the various assumptions made in our model in order to assess the realism of the simulation. results: Our simulation contains pockets of cool gas with down to 1660 K from 1 Mm up to 3.2 Mm height. It overestimates the radiative heating, and contains non-physical heating below 1660 K. Therefore we conclude that cool pockets in the quiet solar chromosphere might have even lower temperatures than in the simulation, provided that there exist areas in the chromosphere without significant magnetic heating. We suggest off-limb molecular spectroscopy to look for such cool pockets and 3D simulations including a local dy...

Leenaarts, Jorrit; Hansteen, Viggo; Gudiksen, Boris V

2011-01-01T23:59:59.000Z

131

Minimum error discrimination between similarity-transformed quantum states  

Science Conference Proceedings (OSTI)

Using the well-known necessary and sufficient conditions for minimum error discrimination (MED), we extract an equivalent form for the MED conditions. In fact, by replacing the inequalities corresponding to the MED conditions with an equivalent but more suitable and convenient identity, the problem of mixed state discrimination with optimal success probability is solved. Moreover, we show that the mentioned optimality conditions can be viewed as a Helstrom family of ensembles under some circumstances. Using the given identity, MED between N similarity transformed equiprobable quantum states is investigated. In the case that the unitary operators are generating a set of irreducible representation, the optimal set of measurements and corresponding maximum success probability of discrimination can be determined precisely. In particular, it is shown that for equiprobable pure states, the optimal measurement strategy is the square-root measurement (SRM), whereas for the mixed states, SRM is not optimal. In the case that the unitary operators are reducible, there is no closed-form formula in the general case, but the procedure can be applied in each case in accordance to that case. Finally, we give the maximum success probability of optimal discrimination for some important examples of mixed quantum states, such as generalized Bloch sphere m-qubit states, spin-j states, particular nonsymmetric qudit states, etc.

Jafarizadeh, M. A. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Research Institute for Fundamental Sciences, Tabriz 51664 (Iran, Islamic Republic of); Sufiani, R. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of); Institute for Studies in Theoretical Physics and Mathematics, Tehran 19395-1795 (Iran, Islamic Republic of); Mazhari Khiavi, Y. [Department of Theoretical Physics and Astrophysics, University of Tabriz, Tabriz 51664 (Iran, Islamic Republic of)

2011-07-15T23:59:59.000Z

132

Indias Credible Minimum Deterrence A Decade Later  

E-Print Network (OSTI)

Deterrence in the most conventional sense implies the making of military threats in order to prevent an adversary from taking aggressive actions (Buzan 1987). According to Barry Buzan (1987: 136), deterrence as a concept purports to stop an unwanted action by the adversary before they occur and encompasses both denial and the possibility of retaliation. The introduction of nuclear weapons into this complex dynamic of deterrence does not stabilise the crisis situation, as conventional wisdom suggests, but makes it even more threatening. The core of nuclear deterrence involves convincing the adversary that the cost of an undesirable action is more than the rewards. This requires a comprehensive understanding of not only the adversarys motives, decision-making processes and objectives, but also ones own capability to influence the calculus of costs and benefits that an adversary attaches to his own belligerence. Therefore, nuclear deterrence also takes into account the credibility of ones own nuclear threat that is aimed at convincing the adversary that his belligerence will be punished by unacceptable damage through nuclear means. It is in the wake of this that India evolved its own nuclear doctrine which seeks to uphold the notion of credible minimum deterrence.

Tanvi Kulkarni; Alankrita Sinha

2011-01-01T23:59:59.000Z

133

Multiple Gravity-Wave Breaking Levels  

Science Conference Proceedings (OSTI)

It is noted that gravity waves for which |u?c| (u=mean flow speed, c=wave phase speed) has a sharp minimum in the upper troposphere or lower stratosphere will have decaying amplitudes above this level despite exponentially decreasing mean ...

Richard S. Lindzen

1985-02-01T23:59:59.000Z

134

The Impact of Minimum Quality Standards on Firm Entry, Exit and Product Quality: The Case of the Child Care Market  

E-Print Network (OSTI)

A Theory of Minimum Standards, Journal of Politi- calto Minimum Quality Standards Regulation, NBER working paperDuopoly and Quality Standards, European Economic Review,

Hotz, V. Joseph; Xiao, Mo

2005-01-01T23:59:59.000Z

135

Thirty-Year Solid Waste Generation Maximum and Minimum Forecast for SRS  

SciTech Connect

This report is the third phase (Phase III) of the Thirty-Year Solid Waste Generation Forecast for Facilities at the Savannah River Site (SRS). Phase I of the forecast, Thirty-Year Solid Waste Generation Forecast for Facilities at SRS, forecasts the yearly quantities of low-level waste (LLW), hazardous waste, mixed waste, and transuranic (TRU) wastes generated over the next 30 years by operations, decontamination and decommissioning and environmental restoration (ER) activities at the Savannah River Site. The Phase II report, Thirty-Year Solid Waste Generation Forecast by Treatability Group (U), provides a 30-year forecast by waste treatability group for operations, decontamination and decommissioning, and ER activities. In addition, a 30-year forecast by waste stream has been provided for operations in Appendix A of the Phase II report. The solid wastes stored or generated at SRS must be treated and disposed of in accordance with federal, state, and local laws and regulations. To evaluate, select, and justify the use of promising treatment technologies and to evaluate the potential impact to the environment, the generic waste categories described in the Phase I report were divided into smaller classifications with similar physical, chemical, and radiological characteristics. These smaller classifications, defined within the Phase II report as treatability groups, can then be used in the Waste Management Environmental Impact Statement process to evaluate treatment options. The waste generation forecasts in the Phase II report includes existing waste inventories. Existing waste inventories, which include waste streams from continuing operations and stored wastes from discontinued operations, were not included in the Phase I report. Maximum and minimum forecasts serve as upper and lower boundaries for waste generation. This report provides the maximum and minimum forecast by waste treatability group for operation, decontamination and decommissioning, and ER activities.

Thomas, L.C.

1994-10-01T23:59:59.000Z

136

Establish Internal Greenhouse Gas Emission Reduction Targets | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Establish Internal Greenhouse Gas Emission Reduction Targets Establish Internal Greenhouse Gas Emission Reduction Targets Establish Internal Greenhouse Gas Emission Reduction Targets October 7, 2013 - 10:24am Addthis Question to Answer What are appropriate GHG emission reduction targets for specific agency programs and sites? Not all administrative units within the agency have the same potential to contribute to agency-level targets. This step aims to help agencies establish what each major administrative unit (e.g. program site) should contribute to the agency goal based on its planned growth trajectory and estimates of its cost and potential to reduce GHG emissions. As illustrated in the figure below, two sites may have equal potential to reduce GHG emissions. But a site expecting significant mission-related growth prior to the 2020 target year may have a lower reduction target

137

Learning to target: what works for behavioral targeting  

Science Conference Proceedings (OSTI)

Understanding what interests and delights users is critical to effective behavioral targeting, especially in information-poor contexts. As users interact with content and advertising, their passive behavior can reveal their interests towards advertising. ... Keywords: advertising, behavioral targeting, user modeling

Sandeep Pandey; Mohamed Aly; Abraham Bagherjeiran; Andrew Hatch; Peter Ciccolo; Adwait Ratnaparkhi; Martin Zinkevich

2011-10-01T23:59:59.000Z

138

Target System and Support Facility 3.1 Introduction  

E-Print Network (OSTI)

of the facility, a maintenance cell at the ground floor elevation for handling magnet components, a hot cell at the tunnel level for mercury target system components, and various remote-handling equipment used-Z targets, such as Inconel, or mercury. It would also be expected to get too hot with a 4 MW beam, which we

McDonald, Kirk

139

Minimum Cost Flow Problems with Value-at-Risk and Conditional ...  

E-Print Network (OSTI)

Stochastic minimum cost flow (SMCF) problems have been studied for applica- tions involving random ...... approach to stochastic programming of heating oil.

140

Estimate of Technical Potential for Minimum Efficiency Performance Standards in 13 Major World Economies  

E-Print Network (OSTI)

Mexico minimum efficiency performance standard million tons (of CO 2 ) national energyand Mexico, produces the largest savings of all the end uses: 780 TWh. The baseline energy

Letschert, Virginie

2013-01-01T23:59:59.000Z

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


141

An Experimental Shield Test Facility for the Development of Minimum Weight Shields for Compact Reactor Power Systems  

SciTech Connect

Discussions are given of the characteristics of fission-source plate, graphite reactor, and pool-type reactor facilities applicable to development studies of minimum weight shielding materials. Advantages of a proposed SNAP dual-purpose shielding facility are described in terms of a disk-shaped fission-source plate, reactor, and building. A program for the study of advanced shielding materials is discussed for materials and configuations to be evaluted with the fission-source plate, the testing of the prototype at high-power levels, and full-power tests on the actual reactor.

Tomlinson, R.L.

1959-08-07T23:59:59.000Z

142

Polynomial-time algorithms for minimum energy scheduling  

Science Conference Proceedings (OSTI)

The aim of power management policies is to reduce the amount of energy consumed by computer systems while maintaining a satisfactory level of performance. One common method for saving energy is to simply suspend the system during idle times. No energy ... Keywords: Job scheduling, dynamic programming, minimizing energy consumption

Philippe Baptiste; Marek Chrobak; Christoph Drr

2012-07-01T23:59:59.000Z

143

Admission REQUiREmEnTsnsC PROGRAMME MINIMUM ADMISSION  

E-Print Network (OSTI)

ACCEPTANCE LEVEL SELECTION PROCEDURES HEALTH SCIENCES · Bachelor of Medicine and Bach- elor of Surgery - MB BCh (6 years) · Bachelor of Pharmacy ­ BPharm (4 years) · Bachelor of Dental Science ­ BDS (5 years) · Bachelor of Science in Physio- therapy ­ BSc(Physiotherapy) (4 years) · Bachelor of Health Sciences (Bio

Wagner, Stephan

144

Beam heating of target foils  

SciTech Connect

A target rotator, built to reduce the effects of beam spot heating, is fully adjustable, holds three targets, is chamber independent, and takes up limited space. The expected temperature rise in the target is calculated from the Stefan--Boltzmann law. (PMA)

Corwin, W.C.

1975-01-01T23:59:59.000Z

145

PDFs for nuclear targets  

E-Print Network (OSTI)

Understanding nuclear effects in parton distribution functions (PDF) is an essential component needed to determine the strange and anti-strange quark contributions in the proton. In addition Nuclear Parton Distribution Functions (NPDF) are critically important for any collider experiment with nuclei (e.g. RHIC, ALICE). Here two next-to-leading order chi^2-analyses of NPDF are presented. The first uses neutral current charged-lepton Deeply Inelastic Scattering (DIS) and Drell-Yan data for several nuclear targets and the second uses neutrino-nucleon DIS data. We compare the nuclear corrections factors (F_2^Fe/F_2^D) for the charged-lepton data with other results from the literature. In particular, we compare and contrast fits based upon the charged-lepton DIS data with those using neutrino-nucleon DIS data.

Karol Kovarik

2010-06-25T23:59:59.000Z

146

ORION laser target diagnostics  

SciTech Connect

The ORION laser facility is one of the UK's premier laser facilities which became operational at AWE in 2010. Its primary mission is one of stockpile stewardship, ORION will extend the UK's experimental plasma physics capability to the high temperature, high density regime relevant to Atomic Weapons Establishment's (AWE) program. The ORION laser combines ten laser beams operating in the ns regime with two sub ps short pulse chirped pulse amplification beams. This gives the UK a unique combined long pulse/short pulse laser capability which is not only available to AWE personnel but also gives access to our international partners and visiting UK academia. The ORION laser facility is equipped with a comprehensive suite of some 45 diagnostics covering optical, particle, and x-ray diagnostics all able to image the laser target interaction point. This paper focuses on a small selection of these diagnostics.

Bentley, C. D.; Edwards, R. D.; Andrew, J. E.; James, S. F.; Gardner, M. D.; Comley, A. J.; Vaughan, K.; Horsfield, C. J.; Rubery, M. S.; Rothman, S. D.; Daykin, S.; Masoero, S. J.; Palmer, J. B.; Meadowcroft, A. L.; Williams, B. M.; Gumbrell, E. T.; Fyrth, J. D.; Brown, C. R. D.; Hill, M. P.; Oades, K. [Plasma Physics Department, Atomic Weapons Establishment, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom); and others

2012-10-15T23:59:59.000Z

147

Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths  

E-Print Network (OSTI)

Two-Point Boundary Value Problems for Curves: The Case of Minimum Free Energy Paths corrected.S.A. Abstract The calculation of a minimum free energy path can be considered as a two-point boundary value box solvers. The second paragraph of Section 1 is corrected. Because free energy is defined in terms

Skeel, Robert

148

A branch-and-cut algorithm for the minimum labeling Hamiltonian cycle problem and two variants  

Science Conference Proceedings (OSTI)

This paper proposes a mathematical model, valid inequalities and polyhedral results for the minimum labeling Hamiltonian cycle problem. This problem is defined on an unweighted graph in which each edge has a label. The aim is to determine a Hamiltonian ... Keywords: Branch-and-cut, Minimum labeling problem, Traveling salesman problem

Nicolas Jozefowiez; Gilbert Laporte; Frdric Semet

2011-11-01T23:59:59.000Z

149

Fast Algorithms for Specially Structured Minimum Cost Flow Problems with Applications  

Science Conference Proceedings (OSTI)

The objective of the classical minimum cost flow problem is to send units of a good that reside at one or more points in a network (sources or supply nodes) with arc capacities to one or more other points in the network (sinks or demand nodes), incurring ... Keywords: analysis of algorithms, applications, computational complexity, flow algorithms, minimum cost flow problem, networks

Balachandran Vaidyanathan; Ravindra K. Ahuja

2010-11-01T23:59:59.000Z

150

Minimum Energy Compensation Strategy and Characteristic Analysis for Dynamic Voltage Restorer  

Science Conference Proceedings (OSTI)

The minimum energy compensation strategy and its characteristic for Dynamic Voltage Restorer (DVR) considering the equipments voltage limitation are discussed. The strategy when the injection voltage is under or especially above the voltage limitation ... Keywords: dynamic voltage restorer, minimum energy compensation, compensation strategy, compensation characteristic, voltage limitation

Yingying Liu; Xu Yonghai; Xiao Xiangning; Guo Chunlin

2009-10-01T23:59:59.000Z

151

Targeting Political Advertising on Television ?  

E-Print Network (OSTI)

We study the targeting of political advertising by congressional candidates on television. Targeting strategies for television differ from targeting strategies for direct mail advertising or get out the vote efforts because candidates cannot target voters individually. Instead, candidates must target television programs with viewers most similar to the desired target voters. Thus, for targeted advertising to have value, the audiences for television programs must differ in meaningful ways and advertising must be effective. In this project, we develop and estimate a model of targeted advertising for U.S. congressional races. We study whether television shows segment potential voters sufficiently to allow for effective targeting and we consider the effect of television advertising- whether it persuades individuals to vote for a particular candidate or mobilizes them to vote in general. Our results suggest the function of television advertising is primarily to persuade. Moreover, we find that there is sufficient variation in the distribution of viewer characteristics across television programs to allow for effective targeting. The most effective targeting strategies therefore involve both parties adopting similar strategies of advertising primarily on programs with audiences containing many swing voters that are likely to vote. While

Mitchell Lovett; Michael Peress

2010-01-01T23:59:59.000Z

152

Levelized Cost of New Generation Resources in the Annual Energy ...  

U.S. Energy Information Administration (EIA)

costs, the levelized cost ... 4 These results do not include targeted tax credits such as the production or investment tax credit available for some technologies.

153

Inertial-confinement-fusion targets  

DOE Green Energy (OSTI)

Inertial confinement fusion (ICF) targets are made as simple flat discs, as hollow shells or as complicated multilayer structures. Many techniques have been devised for producing the targets. Glass and metal shells are made by using drop and bubble techniques. Solid hydrogen shells are also produced by adapting old methods to the solution of modern problems. Some of these techniques, problems and solutions are discussed. In addition, the applications of many of the techniques to fabrication of ICF targets is presented.

Hendricks, C.D.

1981-11-16T23:59:59.000Z

154

"Table A52. Nonswitchable Minimum Requirements and Maximum Consumption"  

U.S. Energy Information Administration (EIA) Indexed Site

2. Nonswitchable Minimum Requirements and Maximum Consumption" 2. Nonswitchable Minimum Requirements and Maximum Consumption" " Potential by Census Region, 1991" " (Estimates in Physical Units)" ,,,,"RSE" ,"Actual","Minimum","Maximum","Row" "Type of Energy","Consumption","Consumption(a)","Consumption(b)","Factors" "RSE Column Factors:",1,1.2,0.8 ," Total United States" ,"-","-","-" "Electricity Receipts(c) (million kilowatthours)",718480,701478,766887,2 "Natural Gas (billion cubic feet)",5345,3485,5887,2 "Distillate Fuel Oil (thousand barrels)",23885,19113,201081,3.7 "Residual Fuel Oil (thousand barrels)",65837,36488,201921,2.6

155

www.wine-economics.org Restaurant Prices and the Minimum Wage  

E-Print Network (OSTI)

We examine the eect of the minimum wage on restaurant prices. For that purpose, we estimate a price rigidity model by exploiting a unique dataset of individual price quotes used to calculate the Consumer Price Index in France. We nd a positive and signicant impact of the minimum wage on prices. We obtain that the eect of the minimum wage on prices is very protracted. The aggregate impact estimated with our model takes more than a year to fully pass through to retail prices.

Denis Fougre; Erwan Gautier; Herv Le Bihan

2008-01-01T23:59:59.000Z

156

Surface structure determination by a one-stop search method for the deepest minimum  

SciTech Connect

We report results of a one-stop automated search method for the deepest minimum in surface structure determination. Starting from known chemical bond lengths, the deepest minimization frozen low-energy electron diffraction (LEED) method locates the deepest minimum in a single run without any human intervention. This is achieved by using an approximation method, the frozen LEED, which has a radius of convergence of over 0.8 A, together with a simulated annealing algorithm that hops out of local minima until a deepest minimum is found. Demonstrations are presented using simulated and experimental results.

Yu, Z.X. [Department of Physics, Zhongshan University, Guangzhou 510275 (China); Tong, S.Y. [Department of Physics and Materials, City University of Hong Kong (China)

2005-04-15T23:59:59.000Z

157

Towards the capability of providing power-area-delay trade-off at the register transfer level  

Science Conference Proceedings (OSTI)

This paper presents a new register-transfer level (RT-level) power estimation technique based on technology decomposition. Given the Boolean description of a circuit function, the power consumption of two typical circuit implementations, namely the minimum ...

Chun-hong Chen; Chi-ying Tsui

1998-08-01T23:59:59.000Z

158

Recent Trends of Minimum and Maximum Surface Temperatures over Eastern Africa  

Science Conference Proceedings (OSTI)

This study investigated recent trends in the mean surface minimum and maximum air temperatures over eastern Africa by use of both graphical and statistical techniques. Daily records for 71 stations for the period 193992 were used.

S. M. Kinguyu; L. A. Ogallo; E. K. Anyamba

2000-08-01T23:59:59.000Z

159

Minimum Uncertainty, Coherence and Squeezing in Diffusion Processes, and Stochastic Quantization  

E-Print Network (OSTI)

We show that uncertainty relations, as well as minimum uncertainty coherent and squeezed states, are structural properties for diffusion processes. Through Nelson stochastic quantization we derive the stochastic image of the quantum mechanical coherent and squeezed states.

Salvatore De Martino; Silvio De Siena; Fabrizio Illuminati; Giuseppe Vitiello

1993-10-18T23:59:59.000Z

160

MINIMUM UNCERTAINTY AND SQUEEZING IN DIFFUSION PROCESSES AND STOCHASTIC QUANTIZATION 1  

E-Print Network (OSTI)

We show that uncertainty relations, as well as minimum uncertainty coherent and squeezed states, are structural properties for diffusion processes. Through Nelson stochastic quantization we derive the stochastic image of the quantum mechanical coherent and squeezed states. 1

S. De Martino; S. De Siena; F. Illuminati; G. Vitiello

1993-01-01T23:59:59.000Z

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


161

Recent Trends in Maximum and Minimum Temperature Threshold Exceedences in the Northeastern United States  

Science Conference Proceedings (OSTI)

Changes in the annual number of daily maximum and minimum temperature threshold exceedences between 1951 and 1993 are assessed at a network of 22 primarily rural sites in the northeastern United States. After adjusting the annual time series for ...

Arthur T. DeGaetano

1996-07-01T23:59:59.000Z

162

A Local Minimum Aliasing Method for Use in Nonlinear Numerical Models  

Science Conference Proceedings (OSTI)

The local spectral method is a minimum aliasing technique for the discretization and numerical integration of prognostic systems consisting of nonlinear partial differential equations. The technique embodies many features of both spectral ...

John R. Anderson

1989-07-01T23:59:59.000Z

163

From Fjords to Open Seas: Ecological Genomics of Expanding Oxygen Minimum Zones (2010 JGI User Meeting)  

Science Conference Proceedings (OSTI)

Steven Hallam of the University of British Columbia talks "From Fjords to Open Seas: Ecological Genomics of Expanding Oxygen Minimum Zones" on March 24, 2010 at the 5th Annual DOE JGI User Meeting

Hallam, Steven

2010-03-24T23:59:59.000Z

164

Systematic Biases in Manual Observations of Daily Maximum and Minimum Temperature  

Science Conference Proceedings (OSTI)

The authors demonstrate that manual observations of daily maximum and minimum temperature are strongly biased toward temperatures ending in certain digits. The nature and severity of these biases are quantified using standard statistical methods. ...

Jon M. Nese

1994-05-01T23:59:59.000Z

165

Optimising maximum power output and minimum entropy generation of Atkinson cycle using mutable smart bees algorithm  

Science Conference Proceedings (OSTI)

The purpose of this article is optimising maximum power output (MPO) and minimum entropy generation (MEG) of an Atkinson cycle as a multi-objective constraint thermodynamic problem by a new improved artificial bee colony algorithm which utilises 'mutable ...

Mofid Gorji; Ahmad Mozaffari; Sina Mohammadrezaei Noudeh

2012-07-01T23:59:59.000Z

166

A Method to Estimate Missing Daily Maximum and Minimum Temperature Observations  

Science Conference Proceedings (OSTI)

A method to estimate missing daily maximum and minimum temperatures is presented. Temperature estimates are based on departures from daily temperature normals at the three closest stations with similar observation times. Although applied to ...

Arthur T. DeGaetano; Keith L. Eggleston; Warren W. Knapp

1995-02-01T23:59:59.000Z

167

Minimum bayes risk decoding with enlarged hypothesis space in system combination  

Science Conference Proceedings (OSTI)

This paper describes a new system combination strategy in Statistical Machine Translation. Tromble et al. (2008) introduced the evidence space into Minimum Bayes Risk decoding in order to quantify the relative performance within lattice or n-best output ...

Tsuyoshi Okita; Josef van Genabith

2012-03-01T23:59:59.000Z

168

The Minimum Spanning Tree Histogram as a Verification Tool for Multidimensional Ensemble Forecasts  

Science Conference Proceedings (OSTI)

The minimum spanning tree (MST) histogram is a multivariate extension of the ideas behind the conventional scalar rank histogram. It tabulates the frequencies, over n forecast occasions, of the rank of the MST length for each ensemble, within the ...

D. S. Wilks

2004-06-01T23:59:59.000Z

169

Reconstructed Annual Minimum Temperatures for the Gulf States, 17991988  

Science Conference Proceedings (OSTI)

A very long series of minimum winter temperatures for the United States Gulf Coast region was developed. A search was made through sources of archival data to locate early temperature records for the region. Records from a number of different ...

Robert D. Erhardt Jr.

1990-06-01T23:59:59.000Z

170

DiffServ node with join minimum cost queue policy and multiclass traffic  

Science Conference Proceedings (OSTI)

DiffServ, the vehicle for providing relative QoS in the Internet is also easily amenable to simple and effective pricing mechanisms. By pricing access to a relative QoS, we can model a DiffServ node as a 'Join Minimum Cost Queue' in which an arriving ... Keywords: diffServ, finite buffer queues, join minimum cost queue, join shortest queue, network pricing, quasi-birth--death processes, queue control

Rahul Tandra; N. Hemachandra; D. Manjunath

2004-01-01T23:59:59.000Z

171

On-Off Minimum-Time Control With Limited Fuel Usage: Global Optima Via Linear Programming  

SciTech Connect

A method for finding a global optimum to the on-off minimum-time control problem with limited fuel usage is presented. Each control can take on only three possible values: maximum, zero, or minimum. The simplex method for linear systems naturally yields such a solution for the re-formulation presented herein because it always produces an extreme point solution to the linear program. Numerical examples for the benchmark linear flexible system are presented.

DRIESSEN,BRIAN

1999-09-01T23:59:59.000Z

172

Qualified Target Industry Tax Refund (Florida) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Qualified Target Industry Tax Refund (Florida) Qualified Target Industry Tax Refund (Florida) Qualified Target Industry Tax Refund (Florida) < Back Eligibility Commercial Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Florida Program Type Corporate Tax Incentive Sales Tax Incentive Provider Enterprise Florida The Qualified Target Industry Tax Refund incentive is available for companies that create high wage jobs in targeted high value-added industries. The incentive refunds up to $3,000 per new full-time employee, $6000 in an Enterprise Zone. More tax refunds are available if companies reach certain wage levels. This incentive also includes refunds on corporate income, sales, ad valorem, intangible personal property,

173

A High Power Liquid Hydrogen Target for Parity Violation Experiments  

DOE Green Energy (OSTI)

Parity-violating electron scattering measurements on hydrogen and deuterium, such as those underway at the Bates and CEBAF laboratories, require luminosities exceeding 10{sup 38} cm{sup -2} s{sup -1}, resulting in large beam power deposition into cryogenic liquid. Such targets must be able to absorb 500 watts or more with minimal change in target density. A 40 cm long liquid hydrogen target, designed to absorb 500 watts of beam power without boiling, has been developed for the SAMPLE experiment at Bates. In recent tests with 40 {micro}A of incident beam, no evidence was seen for density fluctuations in the target, at a sensitivity level of better than 1%. A summary of the target design and operational experience will be presented.

Mark, John W.

2003-06-06T23:59:59.000Z

174

The Kinematic Structure of a Hurricane with Sea Level Pressure Less Than 900 mb  

Science Conference Proceedings (OSTI)

A National Oceanic and Atmospheric Administration aircraft recorded the first Doppler radar data in a tropical cyclone with a minimum sea level pressure (MSLP) <900 mb during a reconnaissance mission in Hurricane Gilbert on 14 September 1988, ...

Peter Dodge; Robert W. Burpee; Frank D. Marks Jr.

1999-06-01T23:59:59.000Z

175

Estimating Noise Levels of Remotely Sensed Measurements from Satellites Using Spatial Structure Analysis  

Science Conference Proceedings (OSTI)

A technique is presented whereby the noise level of satellite measurements of the atmosphere and earth can be estimated. The technique analyzes a spatial array of data measured by a satellite instrument. A minimum of about 200 satellite ...

Donald W. Hillger; Thomas H. Vonder Haar

1988-04-01T23:59:59.000Z

176

Countdown to Fixed Target INSIDE  

NLE Websites -- All DOE Office Websites (Extended Search)

17, 1996 17, 1996 Number 10 Countdown to Fixed Target INSIDE 2 University Close-Up: The University of Illinois 4 Tollestrup Elected to National Academy 5 Bardeen Receives Sakurai Prize 6 Take Your Daughters and Sons to Work Day "At this moment," Fermilab Director John Peoples told the House Subcommittee on Energy and Environment in testimony deliv- ered in Washington on May 8, "Fermilab is in the midst of the transition from collider opera- tions to fixed-target operations. In June, we will begin extracting a beam of protons from the Tevatron, the highest-energy external beam in the world. By directing this beam onto eight targets we will create eight distinct particle beams that will in turn support 10 unique experiments. Although fixed-target experi- ments cannot explore the high-energy frontier

177

Multiple agents moving target search  

Science Conference Proceedings (OSTI)

Traditional single-agent search algorithms usually make simplifying assumptions (single search agent, stationary target, complete knowledge of the state, and sufficient time). There are algorithms for relaxing one or two of these constraints; in this ...

Mark Goldenberg; Alexander Kovarsky; Xiaomeng Wu; Jonathan Schaeffer

2003-08-01T23:59:59.000Z

178

Targeted Advertising ... And Privacy Too  

Science Conference Proceedings (OSTI)

The Web presents a rich and powerful tool for aggregation of consumer information. A flurry of recent articles in the popular press has documented aggressive manipulation of such information by some companies for the purposes of targeted advertising. ...

Ari Juels

2001-04-01T23:59:59.000Z

179

Improving translation via targeted paraphrasing  

Science Conference Proceedings (OSTI)

Targeted paraphrasing is a new approach to the problem of obtaining cost-effective, reasonable quality translation that makes use of simple and inexpensive human computations by monolingual speakers in combination with machine translation. The key insight ...

Philip Resnik; Olivia Buzek; Chang Hu; Yakov Kronrod; Alex Quinn; Benjamin B. Bederson

2010-10-01T23:59:59.000Z

180

National Ignition Facility Target Chamber  

DOE Green Energy (OSTI)

On June 11, 1999 the Department of Energy dedicated the single largest piece of the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory (LLNL) in Livermore, California. The ten (10) meter diameter aluminum target high vacuum chamber will serve as the working end of the largest laser in the world. The output of 192 laser beams will converge at the precise center of the chamber. The laser beams will enter the chamber in two by two arrays to illuminate 10 millimeter long gold cylinders called hohlraums enclosing 2 millimeter capsule containing deuterium, tritium and isotopes of hydrogen. The two isotopes will fuse, thereby creating temperatures and pressures resembling those found only inside stars and in detonated nuclear weapons, but on a minute scale. The NIF Project will serve as an essential facility to insure safety and reliability of our nation's nuclear arsenal as well as demonstrating inertial fusion's contribution to creating electrical power. The paper will discuss the requirements that had to be addressed during the design, fabrication and testing of the target chamber. A team from Sandia National Laboratories (SNL) and LLNL with input from industry performed the configuration and basic design of the target chamber. The method of fabrication and construction of the aluminum target chamber was devised by Pitt-Des Moines, Inc. (PDM). PDM also participated in the design of the chamber in areas such as the Target Chamber Realignment and Adjustment System, which would allow realignment of the sphere laser beams in the event of earth settlement or movement from a seismic event. During the fabrication of the target chamber the sphericity tolerances had to be addressed for the individual plates. Procedures were developed for forming, edge preparation and welding of individual plates. Construction plans were developed to allow the field construction of the target chamber to occur parallel to other NIF construction activities. This was necessary to achieve the overall schedule. Plans had to be developed for the precise location and alignment of laser beam ports. Upon completion of the fabrication of the aluminum target chamber in a temporary structure the 130 ton sphere was moved from the temporary construction enclosure to its final location in the target building. Prior to the installation of a concrete shield and after completion of the welding of the chamber penetrations vacuum leak checking was performed to insure the vacuum integrity of target chamber. The entire spherical chamber external surface supports a 40 cm thick reinforced concrete shield after installation in the target building. The final task is a total survey of the laser ports and the contour machining of spacer plates so that laser devices attached to these ports meet the alignment criteria.

Wavrik, R W; Cox, J R; Fleming, P J

2000-10-05T23:59:59.000Z

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


181

2017 Levelized Costs AEO 2012 Early Release  

Gasoline and Diesel Fuel Update (EIA)

2018 Levelized Costs AEO 2013 1 2018 Levelized Costs AEO 2013 1 January 2013 Levelized Cost of New Generation Resources in the Annual Energy Outlook 2013 This paper presents average levelized costs for generating technologies that are brought on line in 2018 1 as represented in the National Energy Modeling System (NEMS) for the Annual Energy Outlook 2013 (AEO2013) Early Release Reference case. 2 Both national values and the minimum and maximum values across the 22 U.S. regions of the NEMS electricity market module are presented. Levelized cost is often cited as a convenient summary measure of the overall competiveness of different generating technologies. It represents the per-kilowatthour cost (in real dollars) of building and operating a generating plant over an assumed financial life and duty cycle. Key

182

Consumption-Based Adjustment of China's Emissions-Intensity Targets: An Analysis of its Potential Economic Effects  

E-Print Network (OSTI)

Chinas Twelfth Five-Year Plan (20112015) aims to achieve a national carbon intensity reduction of 17% through differentiated targets at the provincial level. Allocating the national target among Chinas provinces is ...

Springmann, M.

183

Concepts for fabrication of inertial fusion energy targets  

SciTech Connect

Future inertial fusion energy (IFE) power plants will have a Target Fabrication Facility (TFF) that must produce approximately 500,000 targets per day. To achieve a relatively low cost of electricity, the cost to produce these targets will need to be less than approximately $0.25 per target. In this paper the status on the development of concepts for a TFF to produce targets for a heavy ion fusion (HIF) reactor, such as HYLIFE II, and a laser direct drive fusion reactor such as Sombrero, is discussed. The baseline target that is produced in the HIF TFF is similar to the close-coupled indirect drive target designed by Callahan-Miller and Tabak at Lawrence Livermore Laboratory. This target consists of a cryogenic hohlraum that is made of a metal case and a variety of metal foams and metal-doped organic foams. The target contains a DT-filled CH capsule. The baseline direct drive target is the design developed by Bodner and coworkers at Naval Research Laboratory. HIF targets can be filled with DT before or after assembly of the capsule into the hohlraum. Assembly of targets before filling allows assembly operations to be done at room temperature, but tritium inventories are much larger due to the large volume that the hohlraum occupies in the fill system. Assembly of targets cold after filling allows substantial reduction in tritium inventory, but this requires assembly of targets at cryogenic temperature. A model being developed to evaluate the tritium inventories associated with each of the assembly and fill options indicates that filling targets before assembling the capsule into the hohlraum, filling at temperatures as high as possible, and reducing dead-volumes in the fill system as much as possible offers the potential to reduce tritium inventories to acceptable levels. Use of enhanced DT ice layering techniques, such as infrared layering can reduce tritium inventories significantly by reducing the layering time and therefore the number of capsules being layered. Current processes for fabrication of ICF capsules can most likely be easily scaled up to produce capsules at rates needed for an IFE plant.

Nobile, A. (Arthur), Jr.; Hoffer, J. K. (James K.); Gobby, P. L. (Peter L.); Steckle, W. P. (Warren P.), Jr.; Goodin, D. T. (Daniel T.); Besenbruch, G. E. (Gottfried E.); Schultz, K. R. (Kenneth R.)

2001-01-01T23:59:59.000Z

184

Testing minimum energy with powerful radio sources in clusters of galaxies  

E-Print Network (OSTI)

We analyze ROSAT data for cluster gas surrounding powerful radio galaxies, which is well fitted by a ``beta-model'' gas distribution, after allowing for a compact central source. The cluster thermal pressure at the distance of the radio lobes is typically an order of magnitude larger than the lobe minimum pressure. Since radio lobes are sharply-bounded, the missing pressure is not simply entrained intra-cluster gas. Thus the minimum energy in the lobes is a severe underestimate of the actual energy content. We argue that the extra energy is mostly in the form of particles, so that the magnetic field is below equipartition and thus not a major factor in the lobe dynamics. The large departure from minimum energy has far-reaching implications for the nature of AGN central engines and the supply of mechanical energy to the cluster gas.

J. P. Leahy; Nectaria A. B. Gizani

1999-09-07T23:59:59.000Z

185

Impact of CIR Storms on Thermosphere Density Variability during the Solar Minimum of 2008  

E-Print Network (OSTI)

The solar minimum of 2008 was exceptionally quiet, with sunspot numbers at their lowest in 75 years. During this unique solar minimum epoch, however, solar wind high - speed streams emanating from near-equatorial coronal holes occurred frequently and were the primary contributor to the recurrent geomagnetic activity at Earth. These conditions enabled the isolation of forcing by geomagnetic activity on the preconditioned solar minimum state of the upper atmosphere caused by Corotating Interaction Regions (CIRs). Thermosphere density observations around 400 km from the CHAMP satellite are used to study the thermosphere density response to solar wind high - speed streams/CIRs. Superposed epoch results show that thermosphere density responds to high - speed streams globally, and the density at 400 km changes by 75% on average. The relative changes of neutral density are comparable at different latitudes, although its variability is largest at high latitudes. In addition, the response of thermosphere density to hi...

Lei, Jiuhou; Wang, Wenbin; McPherron, Robert L

2010-01-01T23:59:59.000Z

186

Point sensitive NMR imaging system using a magnetic field configuration with a spatial minimum  

DOE Patents (OSTI)

A point-sensitive NMR imaging system (10) in which a main solenoid coil (11) produces a relatively strong and substantially uniform magnetic field and a pair of perturbing coils (PZ1 and PZ2) powered by current in the same direction superimposes a pair of relatively weak perturbing fields on the main field to produce a resultant point of minimum field strength at a desired location in a direction along the Z-axis. Two other pairs of perturbing coils (PX1, PX2; PY1, PY2) superimpose relatively weak field gradients on the main field in directions along the X- and Y-axes to locate the minimum field point at a desired location in a plane normal to the Z-axes. An RF generator (22) irradiates a tissue specimen in the field with radio frequency energy so that desired nuclei in a small volume at the point of minimum field strength will resonate.

Eberhard, Philippe H. (El Cerrito, CA)

1985-01-01T23:59:59.000Z

187

Targets and methods for target preparation for radionuclide production  

DOE Patents (OSTI)

The invention relates to nuclear technology, and to irradiation targets and their preparation. One embodiment of the present invention includes a method for preparation of a target containing intermetallic composition of antimony Ti--Sb, Al--Sb, Cu--Sb, or Ni--Sb in order to produce radionuclides (e.g., tin-117 m) with a beam of accelerated particles. The intermetallic compounds of antimony can be welded by means of diffusion welding to a copper backing cooled during irradiation on the beam of accelerated particles. Another target can be encapsulated into a shell made of metallic niobium, stainless steel, nickel or titanium cooled outside by water during irradiation. Titanium shell can be plated outside by nickel to avoid interaction with the cooling water.

Zhuikov, Boris L; Konyakhin, Nicolai A; Kokhanyuk, Vladimir M; Srivastava, Suresh C

2012-10-16T23:59:59.000Z

188

LOW-LATITUDE CORONAL HOLES AT THE MINIMUM OF THE 23rd SOLAR CYCLE  

SciTech Connect

Low- and mid-latitude coronal holes (CHs) observed on the Sun during the current solar activity minimum (from 2006 September 21, Carrington rotation (CR) 2048, to 2009 June 26, CR 2084) were analyzed using Solar and Heliospheric Observatory/Extreme ultraviolet Imaging Telescope and STEREO-A SECCHI EUVI data. From both the observations and Potential Field Source Surface modeling, we find that the area occupied by CHs inside a belt of +-40{sup 0} around the solar equator is larger in the current 2007 solar minimum relative to the similar phase of the previous 1996 solar minimum. The enhanced CH area is related to a recurrent appearance of five persistent CHs, which survived during 7-27 solar rotations. Three of the CHs are of positive magnetic polarity and two are negative. The most long-lived CH was being formed during 2 days and existed for 27 rotations. This CH was associated with fast solar wind at 1 AU of approximately 620 +- 40 km s{sup -1}. The three-dimensional magnetohydrodynamic modeling for this time period shows an open field structure above this CH. We conclude that the global magnetic field of the Sun possessed a multi-pole structure during this time period. Calculation of the harmonic power spectrum of the solar magnetic field demonstrates a greater prevalence of multi-pole components over the dipole component in the 2007 solar minimum compared to the 1996 solar minimum. The unusual large separation between the dipole and multi-pole components is due to the very low magnitude of the dipole component, which is three times lower than that in the previous 1996 solar minimum.

Abramenko, Valentyna; Yurchyshyn, Vasyl [Big Bear Solar Observatory, Big Bear City, CA 92314 (United States); Linker, Jon; Mikic, Zoran [Predictive Science, Inc., San Diego, CA 92121 (United States); Luhmann, Janet; Lee, Christina O. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States)

2010-04-01T23:59:59.000Z

189

TARGET: Science and Engineering Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

TARGET: Science and Engineering Program TARGET: Science and Engineering Program TARGET: Science and Engineering Program January 1, 2013 12:30PM EST to April 1, 2013 5:30PM EDT Fermilab This program at Fermilab is a highly competitive paid six-week summer internship opportunity for Illinois high school sophomores and juniors who have strong interest and demonstrated aptitude for mathematics and the sciences, physics, in particular. The program's goals are to encourage high school students to undertake college study and pursue careers grounded in physics, mathematics, engineering, and technology. TARGET aims to grow representation of underrepresented groups (Black, Hispanic, Native American and women) in the sciences and engineering at the college level and consequently the workforce. Each student is paid an hourly rate of $8.25 for 20 hours of work per week.

190

Materials considerations in accelerator targets  

Science Conference Proceedings (OSTI)

Future nuclear materials production and/or the burn-up of long lived radioisotopes may be accomplished through the capture of spallation produced neutrons in accelerators. Aluminum clad-lead and/or lead alloys has been proposed as a spallation target. Aluminum was the cladding choice because of the low neutron absorption cross section, fast radioactivity decay, high thermal conductivity, and excellent fabricability. Metallic lead and lead oxide powders were considered for the target core with the fabrication options being casting or powder metallurgy (PM). Scoping tests to evaluate gravity casting, squeeze casting, and casting and swaging processes showed that, based on fabricability and heat transfer considerations, squeeze casting was the preferred option for manufacture of targets with initial core cladding contact. Thousands of aluminum clad aluminum-lithium alloy core targets and control rods for tritium production have been fabricated by coextrusion processes and successfully irradiated in the SRS reactors. Tritium retention in, and release from the coextruded product was modeled from experimental and operational data. Newly produced tritium atoms were trapped by lithium atoms to form a lithium tritide. The effective tritium pressure required for trap or tritide stability was the equilibrium decomposition pressure of tritium over a lithium tritide-aluminum mixture. The temperature dependence of tritium release was determined by the permeability of the cladding to tritium and the local equilibrium at the trap sites. The model can be used to calculate tritium release from aluminum clad, aluminum-lithium alloy targets during postulated accelerator operational and accident conditions. This paper describes the manufacturing technologies evaluated and presents the model for tritium retention in aluminum clad, aluminum-lithium alloy tritium production targets.

Peacock, H.B. Jr.; Iyer, N.C.; Louthan, M.R. Jr. [Westinghouse Savannah River Co., Aiken, SC (United States). Materials Technology Section

1994-08-01T23:59:59.000Z

191

Method for producing laser targets  

DOE Patents (OSTI)

An apparatus and method for producing deuterium targets or pellets of 25.mu. to 75.mu. diameter. The pellets are sliced from a continuously spun solid deuterium thread at a rate of up to 10 pellets/second. The pellets after being sliced from the continuous thread of deuterium are collimated and directed to a point of use, such as a laser activated combustion or explosion chamber wherein the pellets are imploded by laser energy or laser produced target plasmas for neutral beam injection.

Jarboe, Thomas R. (Oakland, CA); Baker, William R. (Orinda, CA)

1977-01-01T23:59:59.000Z

192

Tracking highly maneuverable targets with unknown behavior  

E-Print Network (OSTI)

for maneuvering target tracking, IEEE Trans. Aerosp.converted measurements for tracking, IEEE Trans. Aerosp.particle filters for tracking a maneuvering target, in

Schell, C; Linder, S P; Zeidler, J R

2004-01-01T23:59:59.000Z

193

Energy Efficiency Targets | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Targets Energy Efficiency Targets Eligibility Utility Program Information Maine Program Type Energy Efficiency Resource Standard In June 2009, Maine enacted the ''Act Regarding...

194

EPA's Target Finder calculator | ENERGY STAR  

NLE Websites -- All DOE Office Websites (Extended Search)

sample in the nation, plus have it normalized for size, operating characteristics, and weather. Target Finder Access ENERGY STAR Target Finder When to use Portfolio Manager instead...

195

How Will An Increase From $6.75 to $7.75 in the California Minimum Wage Impact the California Economy?  

E-Print Network (OSTI)

Impact of the 2001 California Minimum Wage Increase."Statistics and Research, California Industrial Relationsthe Minimum Wage in California," memorandum, Institute for

Vassalotti, Amy

2005-01-01T23:59:59.000Z

196

Stochastic Modelling and 3D Minimum Variance RecursiveEstimation of Image Sequences  

Science Conference Proceedings (OSTI)

In this paper the 3D minimum variance filtering problem is considered. The proposed spatiotemporal filter is derived according to the assumption that the 3D signal can be modelled by an ensemble of smooth 3D gaussian random fields. The resulting ... Keywords: image processing, optimal filtering, stochastic modelling

L. Jetto

1999-07-01T23:59:59.000Z

197

A hierarchical application of the Minimum Current Corona C. Beveridge and D.W. Longcope  

E-Print Network (OSTI)

A hierarchical application of the Minimum Current Corona C. Beveridge and D.W. Longcope Department. Beveridge, C.: 2003, Ph.D. Thesis, University of St. Andrews. Beveridge, C. and Longcope, D.W.: 2005, Solar.M.: 1990, Astrophys. J., 366, 577. Longcope, D.W.: 1996, Solar Phys, 169, 91. Longcope, D.W.: 2001, Phys

Longcope, Dana

198

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time  

E-Print Network (OSTI)

Battery Sizing for Grid Connected PV Systems with Fixed Minimum Charging/Discharging Time Yu Ru, Jan Kleissl, and Sonia Martinez Abstract-- In this paper, we study a battery sizing problem for grid-connected photovoltaic (PV) systems assuming that the battery charging/discharging limit scales linearly with its

Martínez, Sonia

199

Mobility-assisted minimum connected cover in a wireless sensor network  

Science Conference Proceedings (OSTI)

All properties of mobile wireless sensor networks (MWSNs) are inherited from static wireless sensor networks (WSNs) and meanwhile have their own uniqueness and node mobility. Sensor nodes in these networks monitor different regions of an area of interest ... Keywords: Energy-aware selection method, Minimum connected sensor cover set, Mobile wireless sensor networks, Redundant node, Relocation

Ahmed M. Khedr; Walid Osamy

2012-07-01T23:59:59.000Z

200

A robust forced dynamic sliding mode minimum energy position controller for permanent magnet synchronous motor drives  

Science Conference Proceedings (OSTI)

As a contribution towards improving the environment, a new position controller for vector controlled electric drives employing permanent magnet synchronous motors (PMSM) is presented that achieves approximately 27% less frictional energy loss than a ... Keywords: forced dynamic control, minimum energy manoeuvres, sliding mode control, synchronous motor drives

Stephen J. Dodds; Gunaratnam. Sooriyakumar; Roy Perryman

2008-04-01T23:59:59.000Z

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


201

A stochastic minimum principle and an adaptive pathwise algorithm for stochastic optimal control  

Science Conference Proceedings (OSTI)

We present a numerical method for finite-horizon stochastic optimal control models. We derive a stochastic minimum principle (SMP) and then develop a numerical method based on the direct solution of the SMP. The method combines Monte Carlo pathwise simulation ... Keywords: Electric power systems, Monte Carlo simulation, Stochastic control

Panos Parpas, Mort Webster

2013-06-01T23:59:59.000Z

202

Statistical inference of minimum BD estimators and classifiers for varying-dimensional models  

Science Conference Proceedings (OSTI)

Stochastic modeling for large-scale datasets usually involves a varying-dimensional model space. This paper investigates the asymptotic properties, when the number of parameters grows with the available sample size, of the minimum-BD estimators and classifiers ... Keywords: A diverging number of parameters, Exponential family, Hemodynamic response function, Loss function, Optimal Bayes rule, primary, secondary

Chunming Zhang

2010-08-01T23:59:59.000Z

203

A steady-state L-mode tokamak fusion reactor : large scale and minimum scale  

E-Print Network (OSTI)

We perform extensive analysis on the physics of L-mode tokamak fusion reactors to identify (1) a favorable parameter space for a large scale steady-state reactor and (2) an operating point for a minimum scale steady-state ...

Reed, Mark W. (Mark Wilbert)

2010-01-01T23:59:59.000Z

204

Analysis on Achieving a Minimum Bunch Length in LCLS Bunch Compressor One  

Science Conference Proceedings (OSTI)

An ultra-short bunch is required by different applications in many aspects. In this paper, the condition to achieve a minimum bunch length at the Linac Coherent Light Source (LCLS) [1] bunch compressor one (BC1) is analyzed analytically and evaluated by simulation. The space charge, wake field and coherent synchrotron radiation (CSR) effects are not discussed here.

Sun, Yipeng

2011-08-19T23:59:59.000Z

205

Externally Forced and Internal Variability in Ensemble Climate Simulations of the Maunder Minimum  

Science Conference Proceedings (OSTI)

The response of the climate system to natural, external forcing during the Maunder Minimum (ca. a.d. 16451715) is investigated using a comprehensive climate model. An ensemble of six transient simulations is produced in order to examine the ...

Masakazu Yoshimori; Thomas F. Stocker; Christoph C. Raible; Manuel Renold

2005-10-01T23:59:59.000Z

206

Optimal Control of Hybrid Electric Vehicles Based on Pontryagin's Minimum Principle  

E-Print Network (OSTI)

Optimal Control of Hybrid Electric Vehicles Based on Pontryagin's Minimum Principle Namwook Kim. INTRODUCTION he optimal control of HEVs (Hybrid Electric Vehicles) is an important topic not only because, Sukwon Cha, Huei Peng Abstract - A number of strategies for the power management of HEVs (Hybrid Electric

Peng, Huei

207

GEOMAGNETIC EFFECTS OF INTERPLANETARY SHOCK WAVES DURING SOLAR MINIMUM (1995-1996) AND SOLAR MAXIMUM (2000)  

E-Print Network (OSTI)

GEOMAGNETIC EFFECTS OF INTERPLANETARY SHOCK WAVES DURING SOLAR MINIMUM (1995-1996) AND SOLAR on geomagnetic activity, quantified by the maximum hourly Dst and tri-hourly ap indices, in a period of 3 days after the shock, are evaluated. Correlations between shock parameters and Dst and ap geomagnetic indices

208

Improved Fixed-Parameter Algorithms for Minimum-Flip Consensus Trees  

Science Conference Proceedings (OSTI)

In computational phylogenetics, the problem of constructing a consensus tree for a given set of rooted input trees has frequently been addressed. In this article we study the Minimum-Flip Problem: the input trees are transformed into a binary ... Keywords: Phylogenetics, consensus tree, fixed-parameter algorithm

Sebastian Bcker; Quang Bao Anh Bui; Anke Truss

2012-01-01T23:59:59.000Z

209

Foam shell cryogenic ICF target  

SciTech Connect

A uniform cryogenic layer of DT fuel is maintained in a fusion target having a low density, small pore size, low Z rigid foam shell saturated with liquid DT fuel. Capillary action prevents gravitational slumping of the fuel layer. The saturated shell may be cooled to produce a solid fuel layer.

Darling, Dale H. (Pleasanton, CA)

1987-01-01T23:59:59.000Z

210

MERCURY HANDLING FOR THE TARGET SYSTEM FOR A MUON COLLIDER  

E-Print Network (OSTI)

Cryostat 1. Remote handling The high radiation levels and presence of hazardous, ac- tivated mercury vaporsMERCURY HANDLING FOR THE TARGET SYSTEM FOR A MUON COLLIDER Van Graves , ORNL, Oak Ridge, TN 37830 placement within the Shielding Module in a remote environment. · Providing double containment of the mercury

McDonald, Kirk

211

FY 2012 Highlighted Sustainable Targets and Initiatives  

Energy.gov (U.S. Department of Energy (DOE))

Joint Environmental Management System (EMS) GoalsFY 2012 Highlighted Sustainable Targets and Initiatives

212

Efficient search algorithms for RNAi target detection  

Science Conference Proceedings (OSTI)

RNA interference (RNAi) is a posttranscriptional gene silencing mechanism used to study gene functions, inhibit viral activities, and treat diseases therapeutically. However, RNAi has off-target effects--non-target genes can be unintentionally silenced. ... Keywords: Off-target, RNAi target detection, Reverse string search, String inexact matching, String kernels, siRNA seed region

Shibin Qiu; Terran Lane; Cundong Yang

2007-12-01T23:59:59.000Z

213

Performance of the ATLAS Trigger Reconstruction for Minimum Bias Events, Missing Transverse Energy and Jets in pp-collisions at ?s = 7 TeV  

E-Print Network (OSTI)

Since the restart of the LHC, ATLAS has successfully recorded data at ?s = 0.9 and 7 TeV. The ATLAS trigger strategy realized a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their performance on 7 TeV collision data, whose use case range from the measurements of inelastic charged particle spectra to new physics searches. We will focus on triggers selecting inelastic pp-collisions (minimum bias), missing transverse energies (missing ET ) and jets. Different minimum bias triggers based of central tracking and forward detector components, their efficiencies as well as possible biases are presented. We highlight missing ET triggers, which require the magnitude of the vector sum of all transverse energies to exceed some threshold. While look-up-tables allow fast trigger decisions at L1, the full calorime...

Kwee, R E; The ATLAS collaboration

2010-01-01T23:59:59.000Z

214

Introduction to the Performance of the ATLAS Trigger Reconstruction for Minimum Bias Events, Missing Transverse Energy and Jets in pp-collisions at ?s = 7 TeV  

E-Print Network (OSTI)

Since the restart of the LHC, ATLAS has successfully recorded data at sqrt{s} = 0.9 and 7 TeV. The ATLAS trigger strategy realised a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their performance on 7 TeV collision data, whose use case range from the measuremens of inelastic charged particle spectra to new physics searches. We will focus on triggers selecting inelastic pp-collsions (minimum bias), missing transverse energies (missing E_{T}), jets and bjets. Different minimum bias triggers based of central tracking and forward detector components, their efficiencies as well as possible biases are presented. We highlight missing E_{T} triggers, which require the magnitude of the vector sum of all transverse energies to exceed some threshold. While look-up-tables allow fast trigger decisions at L1, the ...

Kwee, R E; The ATLAS collaboration

2010-01-01T23:59:59.000Z

215

TriggerPerformance of the ATLAS Trigger Reconstruction for Minimum Bias Events, Missing Transverse Energy and Jets in pp-collisions at ?s = 7 TeV  

E-Print Network (OSTI)

Since the restart of the LHC, ATLAS has successfully recorded data at sqrt{s} = 0.9 and 7 TeV. The ATLAS trigger strategy realised a step-wise activation of the three level trigger system, starting with hardware-based first-level (L1) triggers and moving with increasing luminosities to the deployment of the software-based high-level triggers (HLT). We will present L1 and HLT triggers and their performance on 7 TeV collision data, whose use case range from the measuremens of inelastic charged particle spectra to new physics searches. We will focus on triggers selecting inelastic pp-collsions (minimum bias), missing transverse energies (missing E_{T}), jets and bjets. Different minimum bias triggers based of central tracking and forward detector components, their efficiencies as well as possible biases are presented. We highlight missing E_{T} triggers, which require the magnitude of the vector sum of all transverse energies to exceed some threshold. While look-up-tables allow fast trigger decisions at L1, the ...

Kwee, R E; The ATLAS collaboration

2010-01-01T23:59:59.000Z

216

Recovery of germanium-68 from irradiated targets  

DOE Green Energy (OSTI)

A process for selective separation of germanium-68 from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a first ion-containing solution, contacting the first ion-containing solution with a cationic resin whereby ions selected from the group consisting of molybdenum, niobium, technetium, selenium, vanadium, arsenic, germanium, zirconium and rubidium remain in a second ion-containing solution while ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium and zirconium are selectively adsorbed by the first resin, adjusting the pH of the second ion-containing solution to within a range of from about 0.7 to about 3.0, adjusting the soluble metal halide concentration in the second ion-containing solution to a level adapted for subsequent separation of germanium, contacting the pH-adjusted, soluble metal halide-containing second ion-containing solution with a dextran-based material whereby germanium ions are separated by the dextran-based material, and recovering the germanium from the dextran-based material, preferably by distillation.

Phillips, Dennis R. (Los Alamos, NM); Jamriska, Sr., David J. (Los Alamos, NM); Hamilton, Virginia T. (Los Alamos, NM)

1993-01-01T23:59:59.000Z

217

Realizing Technologies for Magnetized Target Fusion  

SciTech Connect

Researchers are making progress with a range of magneto-inertial fusion (MIF) concepts. All of these approaches use the addition of a magnetic field to a target plasma, and then compress the plasma to fusion conditions. The beauty of MIF is that driver power requirements are reduced, compared to classical inertial fusion approaches, and simultaneously the compression timescales can be longer, and required implosion velocities are slower. The presence of a sufficiently large Bfield expands the accessibility to ignition, even at lower values of the density-radius product, and can confine fusion alphas. A key constraint is that the lifetime of the MIF target plasma has to be matched to the timescale of the driver technology (whether liners, heavy ions, or lasers). To achieve sufficient burn-up fraction, scaling suggests that larger yields are more effective. To handle the larger yields (GJ level), thick liquid wall chambers are certainly desired (no plasma/neutron damage materials problem) and probably required. With larger yields, slower repetition rates ({approx}0.1-1 Hz) for this intrinsically pulsed approach to fusion are possible, which means that chamber clearing between pulses can be accomplished on timescales that are compatible with simple clearing techniques (flowing liquid droplet curtains). However, demonstration of the required reliable delivery of hundreds of MJ of energy, for millions of pulses per year, is an ongoing pulsed power technical challenge.

Wurden, Glen A. [Los Alamos National Laboratory

2012-08-24T23:59:59.000Z

218

Recovery of germanium-68 from irradiated targets  

DOE Patents (OSTI)

This invention is comprised of a process for selective separation of germanium-68 from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a first ion-containing solution, contacting the first ion-containing solution with a cationic resin whereby ions selected from the group consisting of molybdenum, niobium, technetium, selenium,vanadium, arsenic, germanium, zirconium and rubidium remain in a second ion-containing solution while ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium and zirconium are selectively adsorbed by the first resin, adjusting the pH of the second ion-containing solution to within a range of from about 0.7 to about 3.0, adjusting the soluble metal halide concentration in the second ion-containing solution to a level adapted for subsequent separation of germanium, contacting the pH-adjusted, soluble metal halide-containing second ion-containing solution with a dextran-based material whereby germanium ions are separated by the dextran-based material, and recovering the germanium from the dextran-based material, preferably by distillation.

Phillips, D.R.; Jamriska, D.J. Sr.; Hamilton, V.T.

1992-12-31T23:59:59.000Z

219

Multishell inertial confinement fusion target  

DOE Patents (OSTI)

A method of fabricating multishell fuel targets for inertial confinement fusion usage. Sacrificial hemispherical molds encapsulate a concentric fuel pellet which is positioned by fiber nets stretched tautly across each hemispherical mold section. The fiber ends of the net protrude outwardly beyond the mold surfaces. The joint between the sacrificial hemispheres is smoothed. A ceramic or glass cover is then deposited about the finished mold surfaces to produce an inner spherical surface having continuously smooth surface configuration. The sacrificial mold is removed by gaseous reactions accomplished through the porous ceramic cover prior to enclosing of the outer sphere by addition of an outer coating. The multishell target comprises the inner fuel pellet concentrically arranged within a surrounding coated cover or shell by fiber nets imbedded within the cover material.

Holland, James R. (Butler, PA); Del Vecchio, Robert M. (Vandergrift, PA)

1987-01-01T23:59:59.000Z

220

Multishell inertial confinement fusion target  

DOE Patents (OSTI)

A method of fabricating multishell fuel targets for inertial confinement fusion usage. Sacrificial hemispherical molds encapsulate a concentric fuel pellet which is positioned by fiber nets stretched tautly across each hemispherical mold section. The fiber ends of the net protrude outwardly beyond the mold surfaces. The joint between the sacrificial hemispheres is smoothed. A ceramic or glass cover is then deposited about the finished mold surfaces to produce an inner spherical surface having continuously smooth surface configuration. The sacrificial mold is removed by gaseous reaction accomplished through the porous ceramic cover prior to enclosing of the outer sphere by addition of an outer coating. The multishell target comprises the inner fuel pellet concentrically arranged within a surrounding coated cover or shell by fiber nets imbedded within the cover material.

Holland, James R. (Butler, PA); Del Vecchio, Robert M. (Vandergrift, PA)

1984-01-01T23:59:59.000Z

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


221

Target preparations and thickness measurements  

SciTech Connect

A wide variety of isotope target preparative methods have been used, including rolling of metals, vapor deposition, electrodeposition, chemical vapor deposition, and sputtering, to obtain thin and thick films of most elements or compounds of elements in the Periodic Table. Most thin films prepared for use in self-supported form as well as those deposited on substrates require thickness measurement (atom count and distribution) and/or thickness uniformity determination before being used in nuclear research. Preparative methods are described together with thickness and uniformity determination procedures applicable to samples being prepared (in situ) and to completed samples. Only nondestructive methods are considered applicable to target samples prepared by the ORNL Solid State Division, Isotope Research Materials Laboratory. Thickness or areal density measurements of sufficient sophistication to yield errors of less than +-1 percent have been achieved with regularity. A statistical analysis procedure is applied which avoids error caused by balance zero-point drift in direct weight measurement methods. (auth)

Adair, H.L.; Kobisk, E.H.

1975-01-01T23:59:59.000Z

222

Coherent Communications, Imaging and Targeting  

SciTech Connect

Laboratory and field demonstration results obtained as part of the DARPA-sponsored Coherent Communications, Imaging and Targeting (CCIT) program are reviewed. The CCIT concept uses a Phase Conjugation Engine based on a quadrature receiver array, a hologram processor and a spatial light modulator (SLM) for high-speed, digital beam control. Progress on the enabling MEMS SLM, being developed by a consortium consisting of LLNL, academic institutions and small businesses, is presented.

Stappaerts, E; Baker, K; Gavel, D; Wilks, S; Olivier, S; Brase, J; Olivier, S; Brase, J

2003-10-03T23:59:59.000Z

223

Boulder, Colorados SmartRegs: Minimum Performance Standards for Residential Rental Housing  

NLE Websites -- All DOE Office Websites (Extended Search)

Policy Brief is an excerpt from the report: "Delivering Energy Efficiency to Middle Income Single Policy Brief is an excerpt from the report: "Delivering Energy Efficiency to Middle Income Single Family Households." For the full report and other resources visit: http://middleincome.lbl.gov March 20, 2012 Boulder, Colorado's SmartRegs: Minimum Performance Standards for Residential Rental Housing The Case for Performance Standards The City of Boulder's Climate Action Plan calls for greenhouse gas emissions reductions across all sectors of the community (e.g., buildings, transportation and industry). Energy conservation in new and existing buildings plays a key role in the plan's ambitious goals. In 2006, Boulder residents overwhelmingly approved a Climate Action Tax to fund Climate Action Plan efforts. For more than a decade the city has been incrementally strengthening minimum energy efficiency standards for residential

224

THE TURBULENT CASCADE AND PROTON HEATING IN THE SOLAR WIND DURING SOLAR MINIMUM  

Science Conference Proceedings (OSTI)

The recently protracted solar minimum provided years of interplanetary data that were largely absent in any association with observed large-scale transient behavior on the Sun. With large-scale shear at 1 AU generally isolated to corotating interaction regions, it is reasonable to ask whether the solar wind is significantly turbulent at this time. We perform a series of third-moment analyses using data from the Advanced Composition Explorer. We show that the solar wind at 1 AU is just as turbulent as at any other time in the solar cycle. Specifically, the turbulent cascade of energy scales in the same manner proportional to the product of wind speed and temperature. Energy cascade rates during solar minimum average a factor of 2-4 higher than during solar maximum, but we contend that this is likely the result of having a different admixture of high-latitude sources.

Coburn, Jesse T.; Smith, Charles W.; Vasquez, Bernard J. [Physics Department and Space Science Center, Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH (United States); Stawarz, Joshua E. [Department of Astrophysical and Planetary Sciences, University of Colorado at Boulder, Boulder, CA (United States); Forman, Miriam A., E-mail: jtu46@wildcats.unh.edu, E-mail: Charles.Smith@unh.edu, E-mail: Bernie.Vasquez@unh.edu, E-mail: Joshua.Stawarz@Colorado.edu, E-mail: Miriam.Forman@sunysb.edu [Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, NY (United States)

2012-08-01T23:59:59.000Z

225

Investigation of Catalyst Deactivation from Operation Below the Minimum Operating Temperature  

Science Conference Proceedings (OSTI)

The expanding use of alternative and renewable energy sources is forcing large coal-fired power plants to operate at low load more frequently and for longer periods. For units with selective catalytic reduction (SCR) systems and without economizer bypass capabilities, low-load operation requires the SCR system to operate at reduced flue gas temperatures. For units burning high-sulfur coal, these lower temperatures are often below the minimum operating temperature defined by SCR catalyst vendors. ...

2012-09-11T23:59:59.000Z

226

THE EFFECT OF A MINIMUM WEIGHT RADIAL REFLECTOR ON SNAP SHIELDING REQUIREMENTS  

SciTech Connect

A model was derived for a minimum-weight radial reflector for SNAP reactors. The effect, which the use of this optimal reflector has on radiation shield weight requirements is investigated. Weights of systems employing conventional and optimal radial reflectors are compared using the FARSE and FARSER computer codes. It is found that for the configuration under study additional shield weight required when the optimal reflector is used is in excess of the reflector weight savings. (auth)

Bernick, R.L.

1963-10-17T23:59:59.000Z

227

Free Magnetic Energy in Solar Active Regions above the Minimum-Energy Relaxed State  

E-Print Network (OSTI)

To understand the physics of solar flares, including the local reorganisation of the magnetic field and the acceleration of energetic particles, we have first to estimate the free magnetic energy available for such phenomena, which can be converted into kinetic and thermal energy. The free magnetic energy is the excess energy of a magnetic configuration compared to the minimum-energy state, which is a linear force-free field if the magnetic helicity of the configuration is conserved. We investigate the values of the free magnetic energy estimated from either the excess energy in extrapolated fields or the magnetic virial theorem. For four different active regions, we have reconstructed the nonlinear force-free field and the linear force-free field corresponding to the minimum-energy state. The free magnetic energies are then computed. From the energy budget and the observed magnetic activity in the active region, we conclude that the free energy above the minimum-energy state gives a better estimate and more insights into the flare process than the free energy above the potential field state.

S. Regnier; E. R. Priest

2008-05-12T23:59:59.000Z

228

Free Magnetic Energy in Solar Active Regions above the Minimum-Energy Relaxed State  

E-Print Network (OSTI)

To understand the physics of solar flares, including the local reorganisation of the magnetic field and the acceleration of energetic particles, we have first to estimate the free magnetic energy available for such phenomena, which can be converted into kinetic and thermal energy. The free magnetic energy is the excess energy of a magnetic configuration compared to the minimum-energy state, which is a linear force-free field if the magnetic helicity of the configuration is conserved. We investigate the values of the free magnetic energy estimated from either the excess energy in extrapolated fields or the magnetic virial theorem. For four different active regions, we have reconstructed the nonlinear force-free field and the linear force-free field corresponding to the minimum-energy state. The free magnetic energies are then computed. From the energy budget and the observed magnetic activity in the active region, we conclude that the free energy above the minimum-energy state gives a better estimate and more ...

Rgnier, S

2008-01-01T23:59:59.000Z

229

Classical capacity of bosonic broadcast communication and a new minimum output entropy conjecture  

E-Print Network (OSTI)

Previous work on the classical information capacities of bosonic channels has established the capacity of the single-user pure-loss channel, bounded the capacity of the single-user thermal-noise channel, and bounded the capacity region of the multiple-access channel. The latter is a multi-user scenario in which several transmitters seek to simultaneously and independently communicate to a single receiver. We study the capacity region of the bosonic broadcast channel, in which a single transmitter seeks to simultaneously and independently communicate to two different receivers. It is known that the tightest available lower bound on the capacity of the single-user thermal-noise channel is that channel's capacity if, as conjectured, the minimum von Neumann entropy at the output of a bosonic channel with additive thermal noise occurs for coherent-state inputs. Evidence in support of this minimum output entropy conjecture has been accumulated, but a rigorous proof has not been obtained. In this paper, we propose a new minimum output entropy conjecture that, if proved to be correct, will establish that the capacity region of the bosonic broadcast channel equals the inner bound achieved using a coherent-state encoding and optimum detection. We provide some evidence that supports this new conjecture, but again a full proof is not available.

Saikat Guha; Jeffrey H. Shapiro; Baris I. Erkmen

2007-06-22T23:59:59.000Z

230

THINNING OF THE SUN'S MAGNETIC LAYER: THE PECULIAR SOLAR MINIMUM COULD HAVE BEEN PREDICTED  

Science Conference Proceedings (OSTI)

The solar magnetic activity cycle causes changes in the Sun on timescales that are equivalent to human lifetimes. The minimum solar activity that preceded the current solar cycle (cycle 24) was deeper and quieter than any other recent minimum. Using data from the Birmingham Solar Oscillations Network (BiSON), we show that the structure of the solar sub-surface layers during the descending phase of the preceding cycle (cycle 23) was very different from that during cycle 22. This leads us to believe that a detailed examination of the data would have led to the prediction that the cycle 24 minimum would be out of the ordinary. The behavior of the oscillation frequencies allows us to infer that changes in the Sun that affected the oscillation frequencies in cycle 23 were localized mainly to layers above about 0.996 R{sub Sun }, depths shallower than about 3000 km. In cycle 22, on the other hand, the changes must have also occurred in the deeper-lying layers.

Basu, Sarbani [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Broomhall, Anne-Marie; Chaplin, William J.; Elsworth, Yvonne, E-mail: sarbani.basu@yale.edu [School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT (United Kingdom)

2012-10-10T23:59:59.000Z

231

Optimal design and allocation of electrified vehicles and dedicated charging infrastructure for minimum life cycle greenhouse gas emissions and cost  

E-Print Network (OSTI)

for minimum life cycle greenhouse gas emissions and cost Elizabeth Traut a,n , Chris Hendrickson b,1 , Erica reduce greenhouse gas (GHG) emissions by shifting energy demand from gasoline to electricity. GHG benefits. HEVs are optimal or near-optimal for minimum cost in most scenarios. High gas prices and low

Michalek, Jeremy J.

232

The exact distribution of the maximum, minimum and the range of Multinomial/Dirichlet and Multivariate Hypergeometric frequencies  

Science Conference Proceedings (OSTI)

The exact distribution of the maximum and minimum frequencies of Multinomial/Dirichlet and Multivariate Hypergeometric distributions of n balls in m urns is compactly represented as a product of stochastic matrices. This representation ... Keywords: Dirichlet multinomial, Multinomial maximum, minimum, range, Multinomial outliers, inliers, Multivariate hypergeometric, Stochastic matrix

Charles J. Corrado

2011-07-01T23:59:59.000Z

233

source_target+_rev11.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

4-1 - April 15 4-1 - April 15 th , 2000 4. Target System and Support Facility 4.1 Overview The target facility extends from the pre-target primary beam focusing to the end of the decay channel. Technical components include the target, beam absorber, and solenoid magnetic field focusing system. While the ultimate goal is to target approximately 4 MW of proton beam in the target area, smaller values and different target materials (low Z etc.) are considered for the first phase of operation. Chosen initially is a carbon target with incident primary beam power of 1.5 MW. The target is embedded in a high field solenoid magnet of 20 Tesla, and followed by a matching section channel, where the field tapers down to 1.25 T. An iterative design process has been carried out in optimizing Monte

234

LIFE Target Fabrication Research Plan Sept 2008  

SciTech Connect

The target-system for the baseline LIFE fast-ignition target was analyzed to establish a preliminary estimate for the costs and complexities involved in demonstrating the technologies needed to build a prototype LIFE plant. The baseline fast-ignition target upon which this analysis was developed is shown in Figure 1.0-1 below. The LIFE target-system incorporates requirements for low-cost, high throughput manufacture, high-speed, high accuracy injection of the target into the chamber, production of sufficient energy from implosion and recovery and recycle of the imploded target material residue. None of these functions has been demonstrated to date. Existing target fabrication techniques which lead to current 'hot spot' target costs of {approx}$100,000 per target and at a production rate of 2/day are unacceptable for the LIFE program. Fabrication techniques normally used for low-cost, low accuracy consumer products such as toys must be adapted to the high-accuracy LIFE target. This will be challenge. A research program resulting is the demonstration of the target-cycle technologies needed for a prototype LIFE reactor is expected to cost {approx}$51M over the course of 5 years. The effort will result in targets which will cost an estimated $0.23/target at a rep-rate of 20 Hz or about 1.73M targets/day.

Miles, R; Biener, J; Kucheyev, S; Montesanti, R; Satcher, J; Spadaccini, C; Rose, K; Wang, M; Hamza, A; Alexander, N; Brown, L; Hund, J; Petzoldt, R; Sweet, W; Goodin, D

2008-11-10T23:59:59.000Z

235

High-level test synthesis for delay fault testability  

Science Conference Proceedings (OSTI)

A high-level test synthesis (HLTS) method targeted for delay fault testability is presented. The proposed method, when combined with hierarchical test pattern generation for embedded modules, guarantees 100% delay test coverage for detectable faults ...

Sying-Jyan Wang; Tung-Hua Yeh

2007-04-01T23:59:59.000Z

236

On target tracking with binary proximity sensors  

Science Conference Proceedings (OSTI)

We consider the use of binary proximity sensors for tracking targets. Such sensors provide only 1-bit information regarding a target's presence or absence in their vicinity, albeit with less than 100% reliability. A novel tracking method employing such ...

Wooyoung Kim; Kirill Mechitov; Jeung-Yoon Choi; Soo Ham

2005-04-01T23:59:59.000Z

237

Nanoparticles for targeting the infarcted heart  

E-Print Network (OSTI)

We report a nanoparticulate system capable of targeting the heart after myocardial infarction (MI). Targeting is based on overexpression of angiotensin II type 1 (AT1) receptor in the infarcted heart. Liposomes 142 nm in ...

Dvir, Tal

238

Targets and processes for fabricating same  

DOE Patents (OSTI)

In particular embodiments, the present disclosure provides targets including a metal layer and defining a hollow inner surface. The hollow inner surface has an internal apex. The distance between at least two opposing points of the internal apex is less than about 15 .mu.m. In particular examples, the distance is less than about 1 .mu.m. Particular implementations of the targets are free standing. The targets have a number of disclosed shaped, including cones, pyramids, hemispheres, and capped structures. The present disclosure also provides arrays of such targets. Also provided are methods of forming targets, such as the disclosed targets, using lithographic techniques, such as photolithographic techniques. In particular examples, a target mold is formed from a silicon wafer and then one or more sides of the mold are coated with a target material, such as one or more metals.

Cowan, Thomas (Dresden, DE); Malekos, Steven (Reno, NV); Korgan, Grant (Reno, NV); Adams, Jesse (Reno, NV); Sentoku, Yasuhiko (Reno, NV); Le Galloudec, Nathalie (Reno, NV); Fuchs, Julien (Paris, FR)

2012-07-24T23:59:59.000Z

239

Range resolution of unequal strength targets  

E-Print Network (OSTI)

This paper examines the problem of resolving targets whose amplitudes may differ. A common metric used for resolution that assumes targets of equal strength is modified for the subject scenario. An expression for range ...

Carlson, Blair D.

240

Workshop on polarized targets and materials. Summary  

DOE Green Energy (OSTI)

Summaries are given of presentations of developments in: irradiated ammonia; polarized atomic hydrogen; polarized target technology; and chemical doping. (GHT)

Hill, D.

1982-01-01T23:59:59.000Z

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


241

Ninth target fabrication specialists` meeting: Proceedings  

Science Conference Proceedings (OSTI)

This report contains a collection of viewgraphs and short papers on target fabrication for inertial confinement purposes.

Not Available

1993-12-31T23:59:59.000Z

242

The Target Market for Methanol Fuel  

E-Print Network (OSTI)

be to place a surcharge on dirtier fuels (e g gasoline) as asurcharge specifically targeted to supporting cleaner fuels and

Sperling, Daniel

1995-01-01T23:59:59.000Z

243

Targeted Mutagenesis Tool in Mesophilic Cellulolytic ...  

Biomass and Biofuels Targeted Mutagenesis Tool in Mesophilic Cellulolytic Clostridia Species Oak Ridge National Laboratory. Contact ORNL About This ...

244

Potential Prognostic Markers and Therapeutic Targets for ...  

Biofuels; Biotechnology & Medicine. Diagnostics and Therapeutics; ... A Fundamental Prognostic Marker and Therapeutic Target for Metastatic Breast Cancer, IB-2186;

245

Target tracking with binary proximity sensors  

Science Conference Proceedings (OSTI)

We explore fundamental performance limits of tracking a target in a two-dimensional field of binary proximity sensors, and design algorithms that attain those limits while providing minimal descriptions of the estimated target trajectory. Using geometric ... Keywords: Sensor networks, binary sensing, distributed algorithms, fundamental limits, target tracking

Nisheeth Shrivastava; Raghuraman Mudumbai; Upamanyu Madhow; Subhash Suri

2009-11-01T23:59:59.000Z

246

Automated laser fusion target production concept  

SciTech Connect

A target production concept is described for the production of multilayered cryogenic spherical inertial confinement fusion targets. The facility is to deliver targets to the reactor chamber at rates up to 10 per second and at costs consistent with economic production of power.

Hendricks, C.D.

1977-10-04T23:59:59.000Z

247

New and Underutilized Technology: Bi-level Stairwell Lighting | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Stairwell Lighting Stairwell Lighting New and Underutilized Technology: Bi-level Stairwell Lighting October 7, 2013 - 8:53am Addthis The following information outlines key deployment considerations for bi-level stairwell lighting within the Federal sector. Benefits Bi-level stairwell lighting uses integral occupancy sensor motion detectors to monitor the stairwell. When occupancy is detected, the lights go to full level. When the space has been vacated after a programmed period, the fixture goes to a minimum level. Application Bi-level stairwell lighting is applicable in most multi-story buildings. Key Factors for Deployment Bi-level stairwell lighting is a good technology to implement concurrently with an overall building lighting improvement project. Ranking Criteria Federal energy savings, cost-effectiveness, and probability of success are

248

FREQUENCY OF MAUNDER MINIMUM EVENTS IN SOLAR-TYPE STARS INFERRED FROM ACTIVITY AND METALLICITY OBSERVATIONS  

Science Conference Proceedings (OSTI)

We consider the common proposition that the fraction of chromospherically very inactive stars in a solar-type sample is analogous to the fraction of the Sun's main-sequence lifetime spent in a grand minimum state. In a new approach to this proposition, we examine chromospheric activity log R'{sub HK} in a stellar sample having Hipparcos parallax measurements, and having spectroscopically determined metallicity close to solar (-0.1 {<=} [Fe/H] {<=} 0.1). We evaluate height above the Hipparcos main sequence, and estimate age using isochrones, to identify the most Sun-like stars in this sample. As a threshold below which a star is labeled very inactive, we use the peak of the HK activity distribution mapped over the quiet Sun during the 1968 epoch. We estimate the fraction of Maunder Minimum (MM) analog candidates in our sample at 11.1%. Given the 70 yr duration of the historical MM, this suggests that in any given year there is a 1/630 chance of entering a similar grand minimum. There are three important cautions with this type of estimate. First, recent investigation using actual activity and photometric time series has suggested that very low activity may not be a necessary criterion for identifying a non-cycling MM analog candidate. Second, this type of estimate depends very strongly on the choice of very low activity threshold. Third, in instantaneous measurements of log R'{sub HK}, it is not always clear whether a star is a viable MM analog candidate or merely an older star nearing the end of its main-sequence lifetime.

Lubin, Dan [Scripps Institution of Oceanography, University of California, San Diego, CA 92093-0221 (United States); Tytler, David; Kirkman, David [Center for Astrophysics and Space Science, University of California, San Diego, CA 92093-0424 (United States)

2012-03-10T23:59:59.000Z

249

Performance of the ATLAS Minimum Bias Trigger in pp collisions at the LHC  

E-Print Network (OSTI)

The early physics program at the ATLAS experiment includes measuring the basic properties of proton proton collisions, such as charged particle multiplicities, in order to constrain phenomenological models of soft interactions in the LHC energy regime. An inclusive and well understood trigger is crucial to minimize any possible bias in the event selection. The ATLAS experiment uses two complementary types of minimum bias triggers. A scintillator trigger sensitive to the forward regions of 2.1trigger based on counting hits in the inner tracking detector has provided a useful control sample. The performance and efficiency measurements of these triggers and detectors will be presented.

Lauren Tompkins

2010-09-30T23:59:59.000Z

250

Performance of the ATLAS Minimum Bias Trigger in pp collisions at the LHC  

E-Print Network (OSTI)

The early physics program at the ATLAS experiment includes measuring the basic properties of proton proton collisions, such as charged particle multiplicities, in order to constrain phenomenological models of soft interactions in the LHC energy regime. An inclusive and well understood trigger is crucial to minimize any possible bias in the event selection. The ATLAS experiment uses two complementary types of minimum bias triggers. A scintillator trigger sensitive to the forward regions of 2.1trigger based on counting hits in the inner tracking detector has provided a useful control sample. The performance and efficiency measurements of these triggers and detectors will be presented.

Tompkins, Lauren

2010-01-01T23:59:59.000Z

251

JGI - 2009 Genome Sequencing Targets  

NLE Websites -- All DOE Office Websites (Extended Search)

July 2, 2008 July 2, 2008 Pine Tree, Boat-Boring Bivalve "Bugs", Duck Weed, Oil-Producing Microalgae, Stinkbird Gut, 40 Others Top DOE Joint Genome Institute 2009 Genome Sequencing Targets WALNUT CREEK, CA-In the continuing effort to tap the vast, unexplored reaches of the earth's microbial and plant domains for bioenergy and environmental applications, the DOE Joint Genome Institute (DOE JGI) has announced its latest portfolio of DNA sequencing projects that it will undertake in the coming year. The 44 projects, culled from nearly 150 proposals received through the Community Sequencing Program (CSP), represent over 60 billion nucleotides of data to be generated through this biodiversity sampling campaign-roughly the equivalent of 20 human genomes. "The scientific and technological advances enabled by the information

252

Synchronous identification of friendly targets  

DOE Patents (OSTI)

A synchronous communication targeting system for use in battle. The present invention includes a transceiver having a stabilizing oscillator, a synchronous amplifier and an omnidirectional receiver, all in electrical communication with each other. A remotely located beacon is attached to a blackbody radiation source and has an amplitude modulator in electrical communication with a optical source. The beacon's amplitude modulator is set so that the optical source transmits radiation frequency at approximately the same or lower amplitude than that of the blackbody radiation source to which the beacon is attached. The receiver from the transceiver is adapted to receive frequencies approximately at or below blackbody radiation signals and sends such signals to the synchronous amplifier. The synchronous amplifier then rectifies and amplifies those signals which correspond to the predetermined frequency to therefore identify whether the blackbody radiation source is friendly or not.

Telle, John M. (126 Shady Oak Cir., Tijeras, NM 87059); Roger, Stutz A. (5 Kiowa La., Los Alamos, NM 87544)

1998-01-01T23:59:59.000Z

253

Development of a Manufacturing Process for High-Precision Cu EOS Targets  

SciTech Connect

This document describes the development of a manufacturing process and the production of Cu EOS targets. The development of a manufacturing process for these targets required a great deal of research, because the specifications for the targets required a level of precision an order of magnitude beyond Target Fabrication's capabilities at the time. Strict limitations on the dimensions of the components and the interfaces between them required research efforts to develop bonding and deposition processes consistent with a manufacturing plan with a dimensional precision on the order of 0.1 {micro}m. Several months into this effort, the specifications for the targets were relaxed slightly as a result of discussions between the Target Fabrication Group and the physicists. The level of precision required for these targets remained an order of magnitude beyond previous capabilities, but the changes made it possible to manufacture targets to the specifications. The development efforts and manufacturing processes described in this document successfully produced a complete Cu EOS target that satisfied all of the fabrication and metrology specifications.

Bono, M J; Castro, C; Hibbard, R L

2006-01-12T23:59:59.000Z

254

Calculated /alpha/-induced thick target neutron yields and spectra, with comparison to measured data  

Science Conference Proceedings (OSTI)

One component of the neutron source associated with the decay of actinide nuclides in many environments is due to the interaction of decay /alpha/ particles in (/alpha/,n) reactions on low Z nuclides. Measurements of (/alpha/,n) thick target neutron yields and associated neutron spectra have been made for only a few combinations of /alpha/ energy and target nuclide or mixtures of actinide and target nuclides. Calculations of thick target neutron yields and spectra with the SOURCES code require /alpha/-energy-dependent cross sections for (/alpha/,n) reactions, as well as branching fractions leading to the energetically possible levels of the product nuclides. A library of these data has been accumulated for target nuclides of Z /le/ 15 using that available from measurements and from recent GNASH code calculations. SOURCES, assuming neutrons to be emitted isotopically in the center-of-mass system, uses libraries of /alpha/ stopping cross sections, (/alpha/,n) reaction cross reactions, product nuclide level branching fractions, and actinide decay /alpha/ spectra to calculate thick target (/alpha/,n) yields and neutron spectra for homogeneous combinations of nuclides. The code also calculates the thick target yield and angle intergrated neutron spectrum produced by /alpha/-particle beams on targets of homogeneous mixtures of nuclides. Illustrative calculated results are given and comparisons are made with measured thick target yields and spectra. 50 refs., 1 fig., 2 tabs.

Wilson, W.B.; Bozoian, M.; Perry, R.T.

1988-01-01T23:59:59.000Z

255

Liquid Hydrogen Target Experience at SLAC  

DOE Green Energy (OSTI)

Liquid hydrogen targets have played a vital role in the physics program at SLAC for the past 40 years. These targets have ranged from small ''beer can'' targets to the 1.5 m long E158 target that was capable of absorbing up to 800 W without any significant density changes. Successful use of these targets has required the development of thin wall designs, liquid hydrogen pumps, remote positioning and alignment systems, safety systems, control and data acquisition systems, cryogenic cooling circuits and heat exchangers. Detailed operating procedures have been created to ensure safety and operational reliability. This paper surveys the evolution of liquid hydrogen targets at SLAC and discusses advances in several of the enabling technologies that made these targets possible.

Weisend, J.G.; Boyce, R.; Candia, A.; Kaminskas, W.; Mark, J.; Racine, M.; St. Lorant, S.; Weber, T.; /SLAC; Arnold, R.; Bosted, P.; /Massachusetts U., Amherst; Carr, R.; Gao, J.; Jones, C.E.; McKeown, R.; /Caltech

2005-08-29T23:59:59.000Z

256

A method of dose reconstruction for moving targets compatible with dynamic treatments  

SciTech Connect

Purpose: To develop a method that allows a commercial treatment planning system (TPS) to perform accurate dose reconstruction for rigidly moving targets and to validate the method in phantom measurements for a range of treatments including intensity modulated radiation therapy (IMRT), volumetric arc therapy (VMAT), and dynamic multileaf collimator (DMLC) tracking. Methods: An in-house computer program was developed to manipulate Dicom treatment plans exported from a TPS (Eclipse, Varian Medical Systems) such that target motion during treatment delivery was incorporated into the plans. For each treatment, a motion including plan was generated by dividing the intratreatment target motion into 1 mm position bins and construct sub-beams that represented the parts of the treatment that were delivered, while the target was located within each position bin. For each sub-beam, the target shift was modeled by a corresponding isocenter shift. The motion incorporating Dicom plans were reimported into the TPS, where dose calculation resulted in motion including target dose distributions. For experimental validation of the dose reconstruction a thorax phantom with a moveable lung equivalent rod with a tumor insert of solid water was first CT scanned. The tumor insert was delineated as a gross tumor volume (GTV), and a planning target volume (PTV) was formed by adding margins. A conformal plan, two IMRT plans (step-and-shoot and sliding windows), and a VMAT plan were generated giving minimum target doses of 95% (GTV) and 67% (PTV) of the prescription dose (3 Gy). Two conformal fields with MLC leaves perpendicular and parallel to the tumor motion, respectively, were generated for DMLC tracking. All treatment plans were delivered to the thorax phantom without tumor motion and with a sinusoidal tumor motion. The two conformal fields were delivered with and without portal image guided DMLC tracking based on an embedded gold marker. The target dose distribution was measured with a radiochromic film in the moving rod and compared with the reconstructed doses using gamma tests. Results: Considerable interplay effects between machine motion and target motion were observed for the treatments without tracking. For nontracking experiments, the mean 2 mm/2% gamma pass rate over all investigated scenarios was 99.6% between calculated and measured doses. For tracking experiments, the mean gamma pass rate was 99.4%. Conclusions: A method for accurate dose reconstruction for moving targets with dynamic treatments was developed and experimentally validated in a variety of delivery scenarios. The method is suitable for integration into TPSs, e.g., for reconstruction of the dose delivered to moving tumors or calculation of target doses delivered with DMLC tracking.

Rugaard Poulsen, Per; Lykkegaard Schmidt, Mai; Keall, Paul; Schjodt Worm, Esben; Fledelius, Walther; Hoffmann, Lone [Department of Oncology, Aarhus University Hospital, Norrebrogade 44, 8000 Aarhus C, Institute of Clinical Medicine, Aarhus University, Brendstrupgaardsvej 100, 8200 Aarhus N (Denmark); Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, 8000 Aarhus C (Denmark); Radiation Physics Laboratory, Sydney Medical School, University of Sydney, NSW 2006 (Australia); Department of Oncology, Aarhus University Hospital, Norrebrogade 44, 8000 Aarhus C, Department of Medical Physics, Aarhus University Hospital, Norrebrogade 44, 8000 Aarhus C (Denmark); Department of Oncology, Aarhus University Hospital, Norrebrogade 44, 8000 Aarhus C (Denmark); Department of Medical Physics, Aarhus University Hospital, Norrebrogade 44, 8000 Aarhus C (Denmark)

2012-10-15T23:59:59.000Z

257

Target Allocation Methodology for China's Provinces: Energy Intensity in the 12th FIve-Year Plan  

SciTech Connect

Experience with China's 20% energy intensity improvement target during the 11th Five-Year Plan (FYP) (2006-2010) has shown the challenges of rapidly setting targets and implementing measures to meet them. For the 12th FYP (2011-2015), there is an urgent need for a more scientific methodology to allocate targets among the provinces and to track physical and economic indicators of energy and carbon saving progress. This report provides a sectoral methodology for allocating a national energy intensity target - expressed as percent change in energy per unit gross domestic product (GDP) - among China's provinces in the 12th FYP. Drawing on international experience - especially the European Union (EU) Triptych approach for allocating Kyoto carbon targets among EU member states - the methodology here makes important modifications to the EU approach to address an energy intensity rather than a CO{sub 2} emissions target, and for the wider variation in provincial energy and economic structure in China. The methodology combines top-down national target projections and bottom-up provincial and sectoral projections of energy and GDP to determine target allocation of energy intensity targets. Total primary energy consumption is separated into three end-use sectors - industrial, residential, and other energy. Sectoral indicators are used to differentiate the potential for energy saving among the provinces. This sectoral methodology is utilized to allocate provincial-level targets for a national target of 20% energy intensity improvement during the 12th FYP; the official target is determined by the National Development and Reform Commission. Energy and GDP projections used in the allocations were compared with other models, and several allocation scenarios were run to test sensitivity. The resulting allocations for the 12th FYP offer insight on past performance and offer somewhat different distributions of provincial targets compared to the 11th FYP. Recommendations for reporting and monitoring progress on the targets, and methodology improvements, are included.

Ohshita, Stephanie; Price, Lynn

2011-03-21T23:59:59.000Z

258

Senate targets fusion, backs NIF  

SciTech Connect

This article discusses a budget approved by the Senate Appropriations Committee which funds the fusion program even lower than the drastically reduced level the House approved in July. Work on the International Thermonuclear Experimental Reactor (ITER) would continue but the Tokamak Physics Experiment would be halted. At the same time, the Senate bill allots money to start work on the National Ignition Facility (NIF).

Lawler, A.

1995-08-01T23:59:59.000Z

259

Model Diagnosis of Nighttime Minimum Temperature Warming during Summer due to Irrigation in the California Central Valley  

Science Conference Proceedings (OSTI)

This study examines the mechanisms of nighttime minimum temperature warming in the California Central Valley during summer due to irrigation. The Scripps Experimental Climate Prediction Center (ECPC) Regional Spectral Model (RSM) was used to ...

Hideki Kanamaru; Masao Kanamitsu

2008-10-01T23:59:59.000Z

260

A Comparative Study of Maximum and Minimum Temperatures over Argentina: NCEPNCAR Reanalysis versus Station Data  

Science Conference Proceedings (OSTI)

This paper compares surface-station temperature observations over Argentina with gridpoint analyses available in the NCEPNCAR reanalysis dataset. The primary objective is to determine whether the maximum and minimum surface temperatures from the ...

Matilde M. Rusticucci; Vernon E. Kousky

2002-08-01T23:59:59.000Z

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


261

Spatial Interpolation of Daily Maximum and Minimum Air Temperature Based on Meteorological Model Analyses and Independent Observations  

Science Conference Proceedings (OSTI)

Hourly meteorological forecast model initializations are used to guide the spatial interpolation of daily cooperative network station data in the northeastern United States. The hourly model data are transformed to daily maximum and minimum ...

Arthur T. DeGaetano; Brian N. Belcher

2007-11-01T23:59:59.000Z

262

The Relative Importance of Solar and Anthropogenic Forcing of Climate Change between the Maunder Minimum and the Present  

Science Conference Proceedings (OSTI)

The climate during the Maunder Minimum is compared with current conditions in GCM simulations that include a full stratosphere and parameterized ozone response to solar spectral irradiance variability and trace gas changes. The Goddard Institute ...

David Rind; Drew Shindell; Judith Perlwitz; Jean Lerner; Patrick Lonergan; Judith Lean; Chris McLinden

2004-03-01T23:59:59.000Z

263

A Southeastern South American Daily Gridded Dataset of Observed Surface Minimum and Maximum Temperature for 19612000  

Science Conference Proceedings (OSTI)

This study presents a southeastern South American gridded dataset of daily minimum and maximum surface temperatures for 19612000. The data used for the gridding are observed daily data from meteorological stations in Argentina, Brazil, Paraguay, and ...

Brbara Tencer; Matilde Rusticucci; Phil Jones; David Lister

2011-10-01T23:59:59.000Z

264

EM Corporate Performance Metrics, Site Level  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Site Level Site Level July, 2013 Site Performance Measure Unit Lifecycle Total Estimate Pre-2013 Lifecycle Values 2013 Target 2014 Target Ames Laboratory Geographic Sites Eliminated Number completed 1 1 1 1 Argonne National Laboratory-East TRU-RH Cubic Meters 22 22 22 22 Argonne National Laboratory-East TRU-CH Cubic Meters 21.4 21.4 21 21 Argonne National Laboratory-East Radioactive Facility Completions Number of Facilities 80 80 80 80 Argonne National Laboratory-East Geographic Sites Eliminated Number completed 1 1 1 1 Argonne National Laboratory-East Remediation Complete Number of Release Sites 443 443 443 443 Brookhaven National Laboratory eU packaged for disposition Number of Containers 0 0 0 0 Brookhaven National Laboratory Nuclear Facility Completions Number of Facilities 2 2 2 2

265

Lyapunov and minimum-time path planning for drones Thibault Maillot  

E-Print Network (OSTI)

an unmanned aerial vehicle (UAV) to provide a target supervision and/or to provide convoy protection to ground the previous ones. Keywords: optimal control, path planning, aircraft navigation, unmanned aerial vehicles2013 #12;Moreover, the reader may refer to [27] for a survey on trajectory-planning algorithms focusing

266

Potential Impact of Adopting Maximum Technologies as Minimum Efficiency Performance Standards in the U.S. Residential Sector  

SciTech Connect

The US Department of Energy (US DOE) has placed lighting and appliance standards at a very high priority of the U.S. energy policy. However, the maximum energy savings and CO2 emissions reduction achievable via minimum efficiency performance standards (MEPS) has not yet been fully characterized. The Bottom Up Energy Analysis System (BUENAS), first developed in 2007, is a global, generic, and modular tool designed to provide policy makers with estimates of potential impacts resulting from MEPS for a variety of products, at the international and/or regional level. Using the BUENAS framework, we estimated potential national energy savings and CO2 emissions mitigation in the US residential sector that would result from the most aggressive policy foreseeable: standards effective in 2014 set at the current maximum technology (Max Tech) available on the market. This represents the most likely characterization of what can be maximally achieved through MEPS in the US. The authors rely on the latest Technical Support Documents and Analytical Tools published by the U.S. Department of Energy as a source to determine appliance stock turnover and projected efficiency scenarios of what would occur in the absence of policy. In our analysis, national impacts are determined for the following end uses: lighting, television, refrigerator-freezers, central air conditioning, room air conditioning, residential furnaces, and water heating. The analyzed end uses cover approximately 65percent of site energy consumption in the residential sector (50percent of the electricity consumption and 80percent of the natural gas and LPG consumption). This paper uses this BUENAS methodology to calculate that energy savings from Max Tech for the U.S. residential sector products covered in this paper will reach an 18percent reduction in electricity demand compared to the base case and 11percent in Natural Gas and LPG consumption by 2030 The methodology results in reductions in CO2 emissions of a similar magnitude.

Letschert, Virginie; Desroches, Louis-Benoit; McNeil, Michael; Saheb, Yamina

2010-05-03T23:59:59.000Z

267

Moller Polarimetry with Atomic Hydrogen Targets  

Science Conference Proceedings (OSTI)

A proposal to use polarized atomic hydrogen gas as the target for electron beam polarimetry based on the Moller scattering is described. Such a gas, stored in an ultra-cold magnetic trap, would provide a target of practically 100\\% polarized electrons. It is conceivable to reach a $\\sim$0.3\\% systematic accuracy of the beam polarimetry with such a target. Feasibility studies for the CEBAF electron beam have been performed.

Eugene Chudakov

2012-06-01T23:59:59.000Z

268

Multicasting in Large Wireless Networks: Bounds on the Minimum Energy per Bit  

E-Print Network (OSTI)

We consider scaling laws for maximal energy efficiency of communicating a message to all the nodes in a wireless network, as the number of nodes in the network becomes large. Two cases of large wireless networks are studied -- dense random networks and constant density (extended) random networks. In addition, we also study finite size regular networks in order to understand how regularity in node placement affects energy consumption. We first establish an information-theoretic lower bound on the minimum energy per bit for multicasting in arbitrary wireless networks when the channel state information is not available at the transmitters. Upper bounds are obtained by constructing a simple flooding scheme that requires no information at the receivers about the channel states or the locations and identities of the nodes. The gap between the upper and lower bounds is only a constant factor for dense random networks and regular networks, and differs by a poly-logarithmic factor for extended random networks. Further...

Jain, Aman; Verdu, Sergio

2009-01-01T23:59:59.000Z

269

Nonradiating and minimum energy sources and their fields: Generalized source inversion theory and applications  

E-Print Network (OSTI)

AbstractA new general framework for characterizing scalar and electromagnetic (EM) nonradiating (NR) and minimum energy (ME) sources and their fields is developed that is of interest for both radiation and source reconstruction problems. NR sources are characterized in connection with the concept of reciprocity as nonreceptors. Localized ME sources are shown to be free fields truncated within the sources support. A new source analysis tool is developed that is based on the decomposition of a source and its field into their radiating and NR components. The individual radiating and reactive energy roles of the radiating and NR parts of a source are characterized. The general theory is illustrated with a time-harmonic EM example. Index TermsInverse problems.

Edwin A. Marengo; Richard W. Ziolkowski

2000-01-01T23:59:59.000Z

270

Image transmission over OFDM channel with rate allocation scheme and minimum peak-toaverage power ratio  

E-Print Network (OSTI)

This paper proposes new scheme for efficient rate allocation in conjunction with reducing peak-to-average power ratio (PAPR) in orthogonal frequency-division multiplexing (OFDM) systems. Modification of the set partitioning in hierarchical trees (SPIHT) image coder is proposed to generate four different groups of bit-stream relative to its significances. The significant bits, the sign bits, the set bits and the refinement bits are transmitted in four different groups. The proposed method for reducing the PAPR utilizes twice the unequal error protection (UEP), using the Read-Solomon codes (RS), in conjunction with bit-rate allocation and selective interleaving to provide minimum PAPR. The output bit-stream from the source code (SPIHT) will be started by the most significant types of bits (first group of bits). The optimal unequal error protection (UEP) of the four groups is proposed based on the channel destortion. The proposed structure provides significant improvement in bit error rate (BER) performance. Per...

Mohammed, Usama S

2010-01-01T23:59:59.000Z

271

Possible Observation of Nuclear Reactor Neutrinos Near the Oscillation Absolute Minimum  

E-Print Network (OSTI)

After a summary of the basic three neutrino oscillation formalism we review briefly our present empirical knowledge of the oscillation parameters and conclude that the 2-neutrinos model is adequate to describe the survival probability of the electronic neutrino P(nue->nue). Then we proceed to the evaluation of P(nue->nue) relative to the antineutrinos emitted by the nuclear power stations presently in operation along the the Rhone valley. We assume that a detector has been installed in a existing cavity located under the Mont Ventoux at a depth equivalent to 1500 m of water. We show that such an experiment would provide the opportunity to observe neutrinos near the oscillation absolute minimum. We end by a rough estimate of the counting rate.

C. Bouchiat

2003-04-27T23:59:59.000Z

272

ALT-3 target design and simulations  

SciTech Connect

ALT-3 is an experiment being designed in collaboration between Russian VNIIEF scientists and LANL that aims to conduct high velocity material experiments to measure shock velocities and pressures near 1 TPa. The DEMG (Disck Explosive Magnetic Generator) is used to drive> 60MA currents to accelerate an aluminum liner to speeds in excess of 20 km/s. 1-D and 2-D simulations of the aluminum target are presented with information on the free surface velocity profile, the state of the target, and the shock velocity in the target. 2-D simulations are presented showing the different targets available as well as a scenario with a perturbed liner impacter.

Peterson, Jeffrey H [Los Alamos National Laboratory

2011-01-12T23:59:59.000Z

273

The Target Market for Methanol Fuel  

E-Print Network (OSTI)

be to place a surcharge on dirtier fuels (e.g. gasoline) assurcharge was specifically targeted to supporting cleaner fuels and

Sperling, Daniel; Setiawan, Winardi; Hungerford, David

1995-01-01T23:59:59.000Z

274

S&TR | Meeting the Target Challenge  

NLE Websites -- All DOE Office Websites (Extended Search)

with a cryogenic layering and characterization station and a target positioner. Scanning electron microscope images of polystyrene beads in copper foams. Scanning electron...

275

Project Plan Remote Target Fabrication Refurbishment Project  

Science Conference Proceedings (OSTI)

In early FY2009, the DOE Office of Science - Nuclear Physics Program reinstated a program for continued production of {sup 252}Cf and other transcurium isotopes at the Radiochemical Engineering Development Center (REDC) at Oak Ridge National Laboratory (ORNL). The FY2009 major elements of the workscope are as follows: (1) Recovery and processing of seven transuranium element targets undergoing irradiation at the High Flux Isotope Reactor (HFIR) at ORNL; (2) Development of a plan to manufacture new targets for irradiation beginning in early- to mid-FY10 to supply irradiated targets for processing Campaign 75 (TRU75); and (3) Refurbishment of the target manufacturing equipment to allow new target manufacture in early FY10 The {sup 252}Cf product from processing Campaign 74 (recently processed and currently shipping to customers) is expected to supply the domestic demands for a period of approximately two years. Therefore it is essential that new targets be introduced for irradiation by the second quarter of FY10 (HFIR cycle 427) to maintain supply of {sup 252}Cf; the average irradiation period is {approx}10 HFIR cycles, requiring about 1.5 calendar years. The strategy for continued production of {sup 252}Cf depends upon repairing and refurbishing the existing pellet and target fabrication equipment for one additional target production campaign. This equipment dates from the mid-1960s to the late 1980s, and during the last target fabrication campaign in 2005- 2006, a number of component failures and operations difficulties were encountered. It is expected that following the target fabrication and acceptance testing of the targets that will supply material for processing Campaign 75 a comprehensive upgrade and replacement of the remote hot-cell equipment will be required prior to subsequent campaigns. Such a major refit could start in early FY 2011 and would take about 2 years to complete. Scope and cost estimates for the repairs described herein were developed, and authorization for the work was received in July 2009 under the Remote Target Fabrication Refurbishment Task of the Enhanced Utilization of Isotope Facilities project (Project Identification Code 2005230) funded by the American Recovery and Reinvestment Act of 2009. The goal of this project is to recover the capability to produce 4-5 curium targets for the irradiation period starting with HFIR cycle 427, currently scheduled to begin 2/17/10. Assuming success, the equipment would then be used to fabricate 6-7 additional targets to hold for the next irradiation campaign specified by the program. Specific objectives are the return to functionality of the Cubicle 3 Pellet Fabrication Line; Cubicle 2 Target Assembly equipment; and Cubicle 1 Target Inspection and Final Assembly system.

Bell, Gary L [ORNL; Taylor, Robin D [ORNL

2009-08-01T23:59:59.000Z

276

QUIET-TIME INTERPLANETARY {approx}2-20 keV SUPERHALO ELECTRONS AT SOLAR MINIMUM  

Science Conference Proceedings (OSTI)

We present a statistical survey of {approx}2-20 keV superhalo electrons in the solar wind measured by the SupraThermal Electron instrument on board the two STEREO spacecraft during quiet-time periods from 2007 March through 2009 March at solar minimum. The observed superhalo electrons have a nearly isotropic angular distribution and a power-law spectrum, f{proportional_to}v{sup -{gamma}}, with {gamma} ranging from 5 to 8.7, with nearly half between 6.5 and 7.5, and an average index of 6.69 {+-} 0.90. The observed power-law spectrum varies significantly on a spatial scale of {approx}>0.1 AU and a temporal scale of {approx}>several days. The integrated density of quiet-time superhalo electrons at 2-20 keV ranges from {approx}10{sup -8} cm{sup -3} to 10{sup -6} cm{sup -3}, about 10{sup -9}-10{sup -6} of the solar wind density, and, as well as the power-law spectrum, shows no correlation with solar wind proton density, velocity, or temperature. The density of superhalo electrons appears to show a solar-cycle variation at solar minimum, while the power-law spectral index {gamma} has no solar-cycle variation. These quiet-time superhalo electrons are present even in the absence of any solar activity-e.g., active regions, flares or microflares, type III radio bursts, etc.-suggesting that they may be accelerated by processes such as resonant wave-particle interactions in the interplanetary medium, or possibly by nonthermal processes related to the acceleration of the solar wind such as nanoflares, or by acceleration at the CIR forward shocks.

Wang, Linghua [Department of Geophysics, Peking University, 100871 Beijing (China); Lin, Robert P.; Salem, Chadi; Pulupa, Marc; Larson, Davin E.; Luhmann, Janet G. [Space Sciences Laboratory, University of California, Berkeley, CA 94720-7450 (United States); Yoon, Peter H., E-mail: wanglhwang@gmail.com [School of Space Research, Kyung Hee University, Yongin, Gyeonggi (Korea, Republic of)

2012-07-01T23:59:59.000Z

277

Optimization of Operating Parameters for Minimum Mechanical Specific Energy in Drilling  

SciTech Connect

Efficiency in drilling is measured by Mechanical Specific Energy (MSE). MSE is the measure of the amount of energy input required to remove a unit volume of rock, expressed in units of energy input divided by volume removed. It can be expressed mathematically in terms of controllable parameters; Weight on Bit, Torque, Rate of Penetration, and RPM. It is well documented that minimizing MSE by optimizing controllable factors results in maximum Rate of Penetration. Current methods for computing MSE make it possible to minimize MSE in the field only through a trial-and-error process. This work makes it possible to compute the optimum drilling parameters that result in minimum MSE. The parameters that have been traditionally used to compute MSE are interdependent. Mathematical relationships between the parameters were established, and the conventional MSE equation was rewritten in terms of a single parameter, Weight on Bit, establishing a form that can be minimized mathematically. Once the optimum Weight on Bit was determined, the interdependent relationship that Weight on Bit has with Torque and Penetration per Revolution was used to determine optimum values for those parameters for a given drilling situation. The improved method was validated through laboratory experimentation and analysis of published data. Two rock types were subjected to four treatments each, and drilled in a controlled laboratory environment. The method was applied in each case, and the optimum parameters for minimum MSE were computed. The method demonstrated an accurate means to determine optimum drilling parameters of Weight on Bit, Torque, and Penetration per Revolution. A unique application of micro-cracking is also presented, which demonstrates that rock failure ahead of the bit is related to axial force more than to rotation speed.

Hamrick, Todd

2011-05-25T23:59:59.000Z

278

Company Level Imports Archives  

U.S. Energy Information Administration (EIA) Indexed Site

Company Level Imports Company Level Imports Archives 2013 Imports by Month January XLS February XLS March XLS April XLS May XLS June XLS July XLS August XLS September XLS...

279

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for low pressure boilers. A boiler tank, from which apor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, Albert P. (Vernon, CT)

1986-01-01T23:59:59.000Z

280

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for low pressure boilers. A boiler tank, from which vapor, such as steam, normally exits via a main vent, is provided with a vertical side tube connected to the tank at the desired low liquid level. When the liquid level falls to the level of the side tube vapor escapes therethrough causing heating of a temperature sensitive device located in the side tube, which, for example, may activate a liquid supply means for adding liquid to the boiler tank. High liquid level in the boiler tank blocks entry of vapor into the side tube, allowing the temperature sensitive device to cool, for example, to ambient temperature.

Grasso, A.P.

1984-02-21T23:59:59.000Z

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


281

Construction and performance of a plastic scintillating fiber target for a rare kaon decay experiment  

Science Conference Proceedings (OSTI)

A K/sup +/ stopping target consisting of 2269 plastic fibers, 2 mm diameter and 3.12 m long has been installed in an experiment searching for the rare decay K/sup +/ to ..pi nu../bar nu/ at Brookhaven National Laboratory. The fibers are bundled onto 379 photomultiplier tube and base assemblies with single photoelectron resolution. After routing to the counting room, the signals are amplified and then distributed to TDC's and high-pass filter circuits that provide signals to ADC's and to fan-ins that provide a target energy-sum pulse used in the fast triggering logic. A minimum ionizing particle 3 m from the photomultiplier yields 1 photoelectron/mm path. The target provides transverse spatial resolution of 4 mm (FWHM) for the vertex of the K/sup +/ decay and 2 ns timing resolution (FWHM) on the difference between the K/sup +/ stop and the subsequent decay. Details of the target construction and operating performance are provided. 4 refs., 7 figs.

Frank, J.S.; Strand, R.C.

1988-01-01T23:59:59.000Z

282

Determining Reserves in Low Permeability and Layered Reservoirs Using the Minimum Terminal Decline Rate Method: How Good are the Predictions?  

E-Print Network (OSTI)

This thesis evaluates the applicability of forecasting production from low permeability and layered tight gas wells using the Arps hyperbolic equation at earlier times and then switching to the exponential form of the equation at a predetermined minimum decline rate. This methodology is called the minimum terminal decline rate method. Two separate completion types have been analyzed. The first is horizontal completions with multi-stage hydraulic fractures while the second is vertical fractured wells in layered formations, completed with hydraulic fractures. For both completion types both simulated data and real world well performance histories have been evaluated using differing minimum terminal decline rates and the benefit of increasing portions of production history to make predictions. The application of the minimum terminal decline rate method to the simulated data in this study (3 percent minimum decline applied to multiple fractured horizontal wells MFHW- and 7 percent applied to vertical fractured layered wells) gave high errors for some simulations within the first two years. Once additional production data is considered in making predictions, the errors in estimated ultimate recovery and in remaining reserves is significantly reduced. This result provides a note of caution, when using the minimum decline rate method for forecasting using small quantities of production history. The evaluation of real world data using the minimum terminal decline rate method introduces other inaccuracies such as poor data quality, low data frequency, operational changes which affect the production profile and workovers / re-stimulations which require a restart of production forecasting process. Real well data for MFHW comes from the Barnett Shale completions of the type which have been widely utilized since 2004. There is insufficient production history from real wells to determine an appropriate minimum terminal decline rate. In the absence of suitable analogs for the determination of the minimum terminal decline rate it would be impossible to correctly apply this methodology. Real well data for vertical fractured layered wells from the Carthage Cotton Valley field indicate that for wells similar to Conoco operated Panola County wells a feasible decline rate is between 5 percent and 10 percent. Further if a consistent production trend and with more than 2 years of production history are used to forecast, the EUR can be predicted to within plus/minus 10 percent and remaining reserves to within plus/minus 15 percent.

McMillan, Marcia Donna

2011-05-01T23:59:59.000Z

283

Moller Polarimetry with Atomic Hydrogen Targets  

DOE Green Energy (OSTI)

A novel proposal of using polarized atomic hydrogen gas, stored in an ultra-cold magnetic trap, as the target for electron beam polarimetry based on Moller scattering is discussed. Such a target of practically 100% polarized electrons could provide a superb systematic accuracy of about 0.5% for beam polarization measurements. The feasibility studies for the CEBAF electron beam have been performed.

Eugene Chudakov; Vladimir Luppov

2003-10-19T23:59:59.000Z

284

Polarized hydrogen gas target. Closeout report  

DOE Green Energy (OSTI)

The purpose of the equipment was to produce a polarized gas target for use as an internal target in storage rings. The part funded under this grant was the construction of the atomic-beam apparatus. In addition to the $300,000 award, $13,267 from DOE operating funds and $19,700 provided by the University was spent on the construction of the atomic beam apparatus. Certain other parts required for the experiments, like the target cell, the target vacuum chamber, and the detectors, were funded by the University of Wisconsin. The cost for installation of the target in the cooler ring at the Indiana University Cyclotron Facility was $2,400. The equipment became operational for the first time in August 1992, after the sixpole magnets, the delivery of which was delayed by more than 6 months because of manufacturing problems, were delivered. There followed a period of measurements to optimize the atomic-beam intensity. In 1992, further work was done using other sources of funds to augment the performance of the polarized gas target by means of radiofrequency (RF) transitions intended to double the degree of polarization of the target. Immediately after the above tests, the polarized gas target equipment was shipped to Bloomington, Indiana where installation in the proton storage ring was completed in July 1993.

NONE

1994-12-31T23:59:59.000Z

285

Optimal Adaptive Waveform Selection for Target Tracking  

E-Print Network (OSTI)

Optimal Adaptive Waveform Selection for Target Tracking Barbara La Scala Mohammad Rezaeian Bill algorithms. This paper describes an optimal adaptive waveform selection algorithm for target tracking. An adap- tive scheduling algorithm that selects the waveforms to be used in future epochs based on current

Rezaeian, Mohammad-Jafar

286

Liner target interaction experiments on Pegasus II  

SciTech Connect

The Los Alamos High Energy Density Physics program uses capacitively driven low voltage, inductive-storage pulse power to implode cylindrical targets for hydrodynamics experiments. Once a precision driver liner was characterized an experimental series characterizing the aluminum target dynamics was performed. The target was developed for shock-induced quasi-particle ejecta experiments including holography. The concept for the Liner shock experiment is that the driver liner is used to impact the target liner which then accelerates toward a collimator with a slit in it. A shock wave is set up in the target liner and as the shock emerges from the back side of the target liner, ejecta are generated. By taking a laser hologram the particle distribution of the ejecta are hoped to be determined. The goal for the second experimental series was to characterize the target dynamics and not to measure and generate the ejecta. Only the results from the third shot, Pegasus II-26 fired April 26th, 1994, from the series is discussed in detail. The second experimental series successfully characterized the target dynamics necessary to move forward towards the planned quasi-ejecta experiments.

Hockaday, M.P.; Chrien, R.E.; Bartsch, R. [and others

1995-09-01T23:59:59.000Z

287

Computer vision aided target linked radiation imaging  

Science Conference Proceedings (OSTI)

In this paper, we demonstrated an application of video tracking to radiation detection, where a vision-based tracking system enables a traditional CZT (cadmium zinc telluride)-based radiation imaging device to detect radioactive targets that are in motion. ... Keywords: Vehicles,Target tracking,Detectors,Radiation imaging,Cameras,Streaming media

Yi Yao

2012-06-01T23:59:59.000Z

288

Polarized proton target-IV. Operations manual  

SciTech Connect

Standard operating procedures are presented for the vacuum, cryogenic, and electronic systems of a polarized proton target. The systems are comprised of (1) a target cryostat; (2) a $sup 4$He pumping system; (3) a $sup 3$He pumping system; (4) a microwave system; (5) a magnet and power supply; (6) a computerized polarization monitor; and (7) miscellaneous auxiliary equipment. (PMA)

Hill, D.; Fletcher, O.; Moretti, A.; Onesto, F.

1976-01-01T23:59:59.000Z

289

Fiber optic moisture sensor with moisture-absorbing reflective target  

DOE Patents (OSTI)

A method and apparatus for sensing moisture changes by utilizing optical fiber technology. One embodiment uses a reflective target at the end of an optical fiber. The reflectance of the target varies with its moisture content and can be detected by a remote unit at the opposite end of the fiber. A second embodiment utilizes changes in light loss along the fiber length. This can be attributed to changes in reflectance of cladding material as a function of its moisture content. It can also be affected by holes or inserts interposed in the cladding material and/or fiber. Changing light levels can also be coupled from one fiber to another in an assembly of fibers as a function of varying moisture content in their overlapping lengths of cladding material.

Kirkham, Randy R. (Richland, WA)

1987-01-01T23:59:59.000Z

290

ENVIRONMENTAL MANAGEMENT SYSTEM OBJECTIVES AND TARGETS  

NLE Websites -- All DOE Office Websites (Extended Search)

Objectives & Targets Rev. 7/17/13 Objectives & Targets Rev. 7/17/13 ENVIRONMENTAL MANAGEMENT SYSTEM OBJECTIVES AND TARGETS 2012 PROGRESS REPORT for SOUTHWESTERN POWER ADMINISTRATION Activity Legal Requirement Aspect Objective Target** see important note Target Achieved Details Real Estate Management DOE O 436.1 E.O. 13423 & 13514 EPAct 1992 and 2005 EISA 2007 NECPA 1978 Natural resource depletion and GHG emissions from resource intensive facilities Increase sustainability of facility resources, reduce energy and water consumption, reduce impacts to natural resources from facility usage 1) Meter 90% of electricity by September 2012 2) Meter 90% of gas, steam, and water by September 2015 3) 30% energy intensity reduction by 2015 from baseline 2003 4) Reduce water consumption intensity 2%

291

You Are A Target | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

You Are A Target You Are A Target You Are A Target November 6, 2013 1:00PM EST Course Title: You Are A Target Course Start/End Date: November 6, 2013 Start/End Time: 1:00 pm - 2:00 pm Course Type: Classrooom. The Meet-Me-Conference number for presentations on 11/6/2013 is 301-903-0117, reservation #447671. Both presentations on 11/6/2013 will be available via VTC. The Germantown room # is B-025. Please contact HQ DOE VTC at vtc@doe.gov or call 301-903-4555 to add your site to the bridge (i.e., 4600). Course Location: Forrestal Large Auditorium Course Description: "You Are A Target" presentation by Lance Spitzner, Training Director, SANS Securing the Human Program. Every October and November, the Department of Energy (DOE) joins the Department of Homeland Security (DHS) and other federal, state and local agencies across the

292

The Jefferson Lab Frozen Spin Target  

SciTech Connect

A frozen spin polarized target, constructed at Jefferson Lab for use inside a large acceptance spectrometer, is described. The target has been utilized for photoproduction measurements with polarized tagged photons of both longitudinal and circular polarization. Protons in TEMPO-doped butanol were dynamically polarized to approximately 90% outside the spectrometer at 5 T and 200-300 mK. Photoproduction data were acquired with the target inside the spectrometer at a frozen-spin temperature of approximately 30 mK with the polarization maintained by a thin, superconducting coil installed inside the target cryostat. A 0.56 T solenoid was used for longitudinal target polarization and a 0.50 T dipole for transverse polarization. Spin relaxation times as high as 4000 hours were observed. We also report polarization results for deuterated propanediol doped with the trityl radical OX063.

Christopher Keith, James Brock, Christopher Carlin, Sara Comer, David Kashy, Josephine McAndrew, David Meekins, Eugene Pasyuk, Joshua Pierce, Mikell Seely

2012-08-01T23:59:59.000Z

293

Target Dependent Score Normalization Techniques and . . .  

E-Print Network (OSTI)

Score normalization methods in biometric verification, which encompass the more traditional user-dependent decision thresholding techniques, are reviewed from a test hypotheses point of view. These are classified into test dependent and target dependent methods. The focus of the paper is on target dependent methods, which are further classified into impostor-centric, target-centric and target-impostor. These are applied to an on-line signature verification system on signature data from SVC 2004. In particular, a target-centric technique based on a variant of the cross-validation procedure provides the best relative performance improvement both for skilled (19%) and random forgeries (53%) as compared to the raw verification performance without score normalization (7.14% EER and 1.06% EER for skilled and random forgeries respectively).

J. Fierrez-Aguilar; J. Ortega-Garcia; J. Gonzalez-Rodriguez

2005-01-01T23:59:59.000Z

294

Multishell inertial-confinement-fusion target  

DOE Patents (OSTI)

This disclosure relates to fusion targets. It deals particularly with the production of multishell inertial confinement fusion targets. The fuel pellet within such targets is designed to compress isentropically under laser or particle irradiation. When a short pulse at extremely high power density strikes the target containing deuterium-tritium fuel, the resulting plasma is confined briefly by its own inertia. Thermonuclear energy can be released in less time than it takes the fuel pellet to blow apart. However, efficient thermonuclear burn requires that the plasma must remain intact at extremely high temperatures and densities for a time sufficient to allow a large fraction of the nuclei to react. Development of multishell targets has been directed at this problem.

Holland, J.R.; Del Vecchio, R.M.

1981-06-01T23:59:59.000Z

295

Moving Target Detection and Tracking in FLIR Image Sequences Based on Thermal Target Modeling  

Science Conference Proceedings (OSTI)

Moving target detection and tracking is an important research field of video processing for its great potential in Military and Civil applications. Motion compensation, motion detection and target tracking are the three fundamental parts of such applications; ... Keywords: FLIR, Maneuver Target, STIP, OTSU

Jiping Xu; Ikram-ul-haq; Jie Chen; Lihua Dou; Zaiwen Liu

2010-03-01T23:59:59.000Z

296

Center Update: Chemicals, Petroleum, and Natural Gas Target: A Quarterly Progress Report to Target Members  

Science Conference Proceedings (OSTI)

This document provides the "work-in-progress" on all activities under the Chemicals, Petroleum, & Natural Gas Target. It is intended to keep the members of the Target informed of all activities being conducted under this Target. The CPNG Center is a contracted office in Houston that maintains the progress on the projects cited in this document.

1999-12-17T23:59:59.000Z

297

High-Risk Prostate Cancer With Gleason Score 8-10 and PSA Level {<=}15 ng/ mL Treated With Permanent Interstitial Brachytherapy  

SciTech Connect

Purpose: With widespread prostate-specific antigen (PSA) screening, there has been an increase in men diagnosed with high-risk prostate cancer defined by a Gleason score (GS) {>=}8 coupled with a relatively low PSA level. The optimal management of these patients has not been defined. Cause-specific survival (CSS), biochemical progression-free survival (bPFS), and overall survival (OS) were evaluated in brachytherapy patients with a GS {>=}8 and a PSA level {<=}15 ng/mL with or without androgen-deprivation therapy (ADT). Methods and Materials: From April 1995 to October 2005, 174 patients with GS {>=}8 and a PSA level {<=}15 ng/mL underwent permanent interstitial brachytherapy. Of the patients, 159 (91%) received supplemental external beam radiation, and 113 (64.9%) received ADT. The median follow-up was 6.6 years. The median postimplant Day 0 minimum percentage of the dose covering 90% of the target volume was 121.1% of prescription dose. Biochemical control was defined as a PSA level {<=}0.40 ng/mL after nadir. Multiple parameters were evaluated for impact on survival. Results: Ten-year outcomes for patients without and with ADT were 95.2% and 92.5%, respectively, for CSS (p = 0.562); 86.5% and 92.6%, respectively, for bPFS (p = 0.204); and 75.2% and 66.0%, respectively, for OS (p = 0.179). The median post-treatment PSA level for biochemically controlled patients was <0.02 ng/mL. Multivariate analysis failed to identify any predictors for CSS, whereas bPFS and OS were most closely related to patient age. Conclusions: Patients with GS {>=}8 and PSA level {<=}15 ng/mL have excellent bPFS and CSS after brachytherapy with supplemental external beam radiotherapy. The use of ADT did not significantly impact bPFS, CSS, or OS.

Fang, L. Christine [Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Merrick, Gregory S., E-mail: gmerrick@urologicresearchinstitute.org [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Butler, Wayne M.; Galbreath, Robert W.; Murray, Brian C.; Reed, Joshua L. [Schiffler Cancer Center, Wheeling Jesuit University, Wheeling, WV (United States); Adamovich, Edward [Department of Pathology, Wheeling Hospital, Wheeling, WV (United States); Wallner, Kent E. [Puget Sound Veterans Affairs Hospital, Seattle, WA (United States)

2011-11-15T23:59:59.000Z

298

Level: National Data;  

U.S. Energy Information Administration (EIA) Indexed Site

.5 First Use of Energy for All Purposes (Fuel and Nonfuel), 2006; Level: National Data; Row: Energy Sources and Shipments, including Further Classification of 'Other' Energy...

299

Liquid level detection  

Science Conference Proceedings (OSTI)

This paper discusses a method. It is for detecting presence of a liquid level at a first predetermined point along the depth of a borehole.

Fryer, C.D.; Stie, K.E.; Wedel, M.W.; Stamper, K.R.

1990-11-27T23:59:59.000Z

300

" Level: National Data;" " ...  

U.S. Energy Information Administration (EIA) Indexed Site

3 Number of Establishments with Capability to Switch Natural Gas to Alternative Energy Sources, 2002;" " Level: National Data;" " Row: NAICS Codes;" " Column: Energy Sources;" "...

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


301

" Level: National Data;" " ...  

U.S. Energy Information Administration (EIA) Indexed Site

7 Number of Establishments with Capability to Switch Electricity to Alternative Energy Sources, 2002; " " Level: National Data;" " Row: NAICS Codes;" " Column: Energy Sources;" "...

302

A variational level set method for the topology optimization of steady-state Navier-Stokes flow  

Science Conference Proceedings (OSTI)

The smoothness of topological interfaces often largely affects the fluid optimization and sometimes makes the density-based approaches, though well established in structural designs, inadequate. This paper presents a level-set method for topology optimization ... Keywords: Level set method, Maximum permeability, Minimum energy dissipation, Navier-Stokes flow, Topology optimization, Variational method

Shiwei Zhou; Qing Li

2008-12-01T23:59:59.000Z

303

The extended minimum of solar cycle 23 as seen by radial velocity (GOLF, GONG) and intensity (VIRGO) helioseismic instruments  

E-Print Network (OSTI)

We present an analysis of the variability of the solar oscillation spectrum during solar cycle 23 and its extended minimum. We use simultaneous observations of the low-degree solar p modes collected by the space-based, Sun-as-a-star GOLF (radial velocity) and VIRGO (intensity) instruments, and by the ground-based, multi-site network GONG. We investigate in particular the response of the p-mode eigenfrequencies to the observed peculiar deep solar minimum of surface activity of 2007-2009 as compared with the previous solar cycle 23. We study the different temporal variations of the p-mode frequencies with individual angular degrees.

Salabert, D; Palle, P L; Jimenez-Reyes, S J; Jimenez, A

2010-01-01T23:59:59.000Z

304

Exact and approximate solutions for the quantum minimum-Kullback-entropy estimation problem  

E-Print Network (OSTI)

The minimum Kullback entropy principle (mKE) is a useful tool to estimate quantum states and operations from incomplete data and prior information. In general, the solution of a mKE problem is analytically challenging and an approximate solution has been proposed and employed in different context. Recently, the form and a way to compute the exact solution for finite dimensional systems has been found, and a question naturally arises on whether the approximate solution could be an effective substitute for the exact solution, and in which regimes this substitution can be performed. Here, we provide a systematic comparison between the exact and the approximate mKE solutions for a qubit system when average data from a single observable are available. We address both mKE estimation of states and weak Hamiltonians, and compare the two solutions in terms of state fidelity and operator distance. We find that the approximate solution is generally close to the exact one unless the initial state is near an eigenstate of the measured observable. Our results provide a rigorous justification for the use of the approximate solution whenever the above condition does not occur, and extend its range of application beyond those situations satisfying the assumptions used for its derivation.

Carlo Sparaciari; Stefano Olivares; Francesco Ticozzi; Matteo G. A. Paris

2013-11-23T23:59:59.000Z

305

Revised equipartition & minimum energy formula for magnetic field strength estimates from radio synchrotron observations  

E-Print Network (OSTI)

The commonly used classical equipartition or minimum-energy estimate of total magnetic fields strengths from radio synchrotron intensities is of limited practical use because it is based on the hardly known ratio K of the total energies of cosmic ray protons and electrons and also has inherent problems. We present a revised formula, using the number density ratio K for which we give estimates. For particle acceleration in strong shocks K is about 40 and increases with decreasing shock strength. Our revised estimate for the field strength gives larger values than the classical estimate for flat radio spectra with spectral indices of about 0.5-0.6, but smaller values for steep spectra and total fields stronger than about 10 muG. In very young supernova remnants, for example, the classical estimate may be too large by up to 10x. On the other hand, if energy losses of cosmic ray electrons are important, K increases with particle energy and the equipartition field may be underestimated significantly. Our revised larger equipartition estimates in galaxy clusters and radio lobes are consistent with independent estimates from Faraday rotation measures, while estimates from the ratio between radio synchrotron and X-ray inverse Compton intensities generally give much weaker fields. This may be explained e.g. by a concentration of the field in filaments. Our revised field strengths may also lead to major revisions of electron lifetimes in jets and radio lobes estimated from the synchrotron break frequency in the radio spectrum.

Rainer Beck; Marita Krause

2005-07-15T23:59:59.000Z

306

The effect of longitudinal spacer ribs on the minimum pressure drop in a heated annulus  

SciTech Connect

When evaluating a heated flow passage for vulnerability to static flow excursions, special note should be taken of flow restrictions which might allow premature vapor generation. In this study, measurements of steady state pressure drop were made for the downward flow of water in a vertical annulus. The outer wall was uniformly heated to allow subcooled boiling. Minima in the pressure drop characteristics were compared for test sections with and without longitudinal spacer ribs. For a given power and inlet temperature, the minimum occurred at a higher flow rate in the ribbed test section. This is attributed to vapor generation at the ribs. The work cited in this document show how a restriction in a heated channel can produce vapor which would not be observed in the absence of the restriction. In the present study, the effect of a flow restriction on the tendency to flow excursion is explored by finding demand curves for a heated annulus in subcooled boiling flow. The annulus is heated from the outside, and alternately equipped with and without longitudinal spacer ribs. These ribs separate the heated and unheated walls; in pressing against the heated wall they provide a means for premature vapor production.

Johnston, B.S.; Neff, J.M.

1990-01-01T23:59:59.000Z

307

Minimum Energy Dwelling (MED) workbook: an investigation of techniques and materials for energy conscious design  

DOE Green Energy (OSTI)

This workbook is based upon information gathered during the design phase of the Minimum Energy Dwelling. The objective of the project, sponsored by the Southern California Gas Co., Department of Energy, and Mission Viejo is to substantially reduce energy use by the incorporation of energy conservation and solar techniques in a single-family detached dwelling. The Project will demonstrate to builders, as well as to the general public, a number of technological innovations that can, at reasonable cost, be included in a dwelling design. The problem facing Southern California Gas Co., along with most other gas utilities, is ever-decreasing amounts of gas at increasing prices. The dwelling designed has approximately 1,150 ft/sup 2/, consistent with current home-building trends. Through the optimum use of energy-conserving appliances, insulation, window and wall shading, exterior coloring, and thermal mass, the yearly energy usage has been reduced by over 50%. Of the remaining 50% of the energy required for heating, cooling, and domestic hot water, the majority is supplied by the solar-energy system. Three hundred twenty square feet (270 effective) of evacuated tube collector are incorporated into the building structure. The hot water provided by the collectors is used to run an absorption chiller for cooling, the domestic hot water, and the heating system. The remaining energy requirements are met by an auxiliary natural gas energy system and a cool-air-economizer cycle.

Not Available

1977-12-01T23:59:59.000Z

308

Order Parameters for Detecting Target Curves in Images: When Does High Level Knowledge Help?  

Science Conference Proceedings (OSTI)

Many problems in vision can be formulated as Bayesian inference. It is important to determine the accuracy of these inferences and how they depend on the problem domain. In this paper, we provide a theoretical framework based on Bayesian decision theory ... Keywords: Bayesian inference, curve detection, minimax entropy, order parameters

A. L. Yuille; James M. Coughlan; Yingnian Wu; Song Chun Zhu

2001-01-01T23:59:59.000Z

309

Does Targeted Education of Emergency Physicians Improve Their Comfort Level in Treating Psychiatric Patients?  

E-Print Network (OSTI)

no . 6 : December 2012 Western Journal of Emergency Medicinethe Veterans Affairs Emergency Physicians website. AvailablePsychiatric Association. Emergency departments healthcare

2012-01-01T23:59:59.000Z

310

Target Selection using Geo-Demographic Joint Distributions  

E-Print Network (OSTI)

Managers often face the problem of limited data at the individual customer level. A common practice is to augment the limited available customer level data with averages for the group to which the customer belongs. We demonstrate using a target selection problem that this standard practice of using group (zip code) averages as a proxy for individual information leads to biased inference and erroneous managerial decisions. We therefore propose that firms use conditional averages, i.e., rather than use the raw averages for the group, use averages conditional on the available individual information in the firms internal databases. However, this is hard to implement in practice because group level joint distributions are unavailable. We develop a flexible and scalable approach to obtain group level joint distributions by augmenting the available group level marginal distributions with joint distribution information from a representative sample of individuals at the aggregate market level that comprises all the groups which form the aggregate market. Our approach to infer joint distributions has a wide range of applications in marketing and empirical industrial organization.

Jason A. Duan; Sachin Sancheti; K. Sudhir

2007-01-01T23:59:59.000Z

311

Time-minimal control of dissipative two-level quantum systems: The Integrable case  

E-Print Network (OSTI)

The objective of this article is to apply recent developments in geometric optimal control to analyze the time minimum control problem of dissipative two-level quantum systems whose dynamics is governed by the Lindblad equation. We focus our analysis on the case where the extremal Hamiltonian is integrable.

B. Bonnard; D. Sugny

2008-09-24T23:59:59.000Z

312

SNS target reaches end-of-life  

Science Conference Proceedings (OSTI)

On Sunday, April 3, 2011, the Spallation Neutron Source (SNS) target reached an end-of-life condition, so user operations were shut down to change the stainless steel target housing the liquid mercury. This is the third change out of the target vessel; it is an expected event and took about two weeks. We took advantage of this time to do maintenance work that was planned for the longer summer shutdown. This will shorten that shutdown and recover the neutron production time. SNS restarted user operations on April 20.

Ekkebus, Allen E [ORNL

2011-01-01T23:59:59.000Z

313

Targeted and comprehensive space-environment sensors: description and recommendations  

SciTech Connect

We discuss the roles of the two classes of space-environment sensors on operational space systems: (1) Targeted sensors capable of measuring the environment and effects at a level sufficient for providing situational awareness for the host spacecraft and (2) Comprehensive sensors capable of providing detailed environment measurements that can be mapped to a broad region of near-Earth space, providing global situational awareness and quantitative characterization of the environment. Our purpose is to show the usefulness of a heterogeneous architecture with both classes of sensors for the near-term and long-term needs of National Security Space

Reeves, Geoffrey; O' Brien, Paul; Mazur, Joe; Ginet, Gregory

2009-01-01T23:59:59.000Z

314

Radiological Assessment of Target Materials for Accelerator Transmutation of Waste (ATW) Applications  

Science Conference Proceedings (OSTI)

This paper issues the first published research of the radiation absorbed dose rate (rad-h-1) to tissue from radioactive spallation products in target materials of Ta, W, Pb, Bi, and LBE which are used in Accelerator Transmutation of Waste (ATW) applications. No previous works have provided an estimate of the absorbed dose rate (rad-h-1) from activated targets for ATW applications. The results of this paper are useful for planning the radiological safety assessment to personnel, and for the design, construction, maintenance, and disposition of target materials of high-energy particle accelerators for ATW applications. In addition, this paper provides the characterization of target materials of high-energy particle accelerators for the parameters of: 1) spallation neutron yield (neutrons/proton), 2) spallation products yield (nuclides/proton), 3) energy-dependent spallation neutron fluence distribution, 4) spallation neutron flux, 5) identification of radioactive spallation products for consideration in safety of personnel to high radiation dose rates, and 6) identification of the optimum geometrical dimensions for the target applicable to the maximum radial spallation neutron leakage from the target. Pb and Bi target materials yielded the lowest absorbed dose rates (rad-h-1) for a 10-year irradiation/50-year decay scheme, and would be the preferred target materials for consideration of the radiological safety of personnel during ATW operations. A beneficial characteristic of these target materials is that they do not produce radioactive transuranic isotopes, which have very long half-lives and require special handling and disposition requirements Furthermore, the targets are not considered High-Level Waste (HLW) such as reactor spent fuel for disposal purposes. It is a basic ATW system requirement that the spallation target after it has been expended should be disposable as Class C low-level radioactive waste. Therefore, the disposal of Pb and Bi targets would be optimally beneficial to the economy and environment. Future research should relate the target performance to other system parameters, specifically solid and liquid blanket systems that contain the radioactive waste to be transmuted. The methodology of this paper may be applied to any target material of a high-energy particle accelerator. (author)

Vickers, Linda D. [BWXT, U.S. Department of Energy, Pantex Plant, P.O. Box 30020, Hwy60/FM2373, Amarillo, TX 79120-0020 (United States)

2002-07-01T23:59:59.000Z

315

HIGH LATITUDE ULYSSES OBSERVATIONS OF THE H/HE INTENSITY RATIO UNDER SOLAR MINIMUM AND SOLAR MAXIMUM CONDITIONS  

DOE Green Energy (OSTI)

We analyze measurements of the 0.5-1.0 MeV/nucleon H/He intensity ratio from the Ulysses spacecraft during its first (1992-94) and second (1999-2000) ascent to southern high latitude regions of the heliosphere. These cover a broad range of heliocentric distances (from 5.2 to 2.0 AU) and out-of-ecliptic latitudes (from 18{degree}S to 80{degree}S). During Ulysses' first southern pass, the HI-SCALE instrument measured a series of enhanced particle fluxes associated with the passage of a recurrent corotating interaction region (CIR). Low values ({approximately}6) of the H/He ratio were observed in these recurrent corotating events, with a clear minimum following the passage of the corotating reverse shock. When Ulysses reached high southern latitudes (>40{degree}S), the H/He ratio always remained below {approximately}10 except during two transient solar events that brought the ratio to high (>20) values. Ulysses' second southern pass was characterized by a higher average value of the H/He ratio. No recurrent pattern was observed in the energetic ion intensity which was dominated by the occurrence of transient events of solar origin. Numerous CIRs, many of which were bounded by forward and reverse shock pairs, were still observed in the solar wind and magnetic field data. The arrival of those CIRs at Ulysses did not always result in a decrease of the H/He ratio; on the contrary, many CIRs showed a higher H/He ratio than some transient events. Within a CIR, however, the H/He ratio usually increased around the forward shock and decreased towards the reverse shock. Throughout the second ascent to southern heliolatitudes, the H/He ratio seldom decreased below {approximately}10 even at high latitudes (>40{degree}S). We interpret these higher values of the H/He ratio in terms of the increasing level of solar activity together with the poor definition and short life that corotating solar wind structures have under solar maximum conditions. The global filling of the heliosphere by transient solar events and the fact that in 1999-2000 Ulysses observed only intermediate (<650 km s{sup {minus}1}) solar wind speed (whose contents in pick-up He is less energetic than in the fast solar wind streams observed in 1992-1994) favored the protons with respect to alpha particles. Hence the fact that the average values of the H/He ratio observed by Ulysses during the rising phase of the solar cycle (1999-2000) were higher than those observed during the declining phase (1992-1994).

J. GOSLING; D. LARIO; ET AL

2001-03-01T23:59:59.000Z

316

Energy Efficiency Targets | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Targets Targets Energy Efficiency Targets < Back Eligibility Investor-Owned Utility Program Info State Arkansas Program Type Energy Efficiency Resource Standard In December of 2010, the Arkansas Public Service Commission announced a [http://www.apscservices.info/pdf/08/08-144-U_153_1.pdf Sustainable Energy Resource Action Plan] for Arkansas. Along with this comprehensive plan, the Commission issued 10 Orders directing the state's four electric and three natural gas investor-owned utilities to implement the energy efficiency measures described in the Action Plan. These orders were passed on December 10, 2010. Order 17 in Docket 08-144-U sets sales reductions targets for both electric and gas utilities. The PSC directed these utilities to file comprehensive energy efficiency plans for 2011, 2012, and 2013 with incremental energy

317

Table II: Technical Targets for Membranes: Automotive  

NLE Websites -- All DOE Office Websites (Extended Search)

II: Technical Targets for Membranes: Automotive II: Technical Targets for Membranes: Automotive All targets must be achieved simultaneously Characteristics Units Calendar year 2000 status a 2005 2010 Membrane conductivity, operating temperature Ω-cm -1 0.1 0.1 0.1 Room temperature Ω-cm -1 -20 o C Ω-cm -1 Oxygen cross-over b mA/cm 2 5 5 2 Hydrogen cross-over b mA/cm 2 5 5 2 Cost $/kW 50 5 Operating Temperature o C 80 120 120 Durability Hours 1000 d >4000 e >5000 f Survivability c o C -20 -30 -40 Thermal cyclability in presence of condensed water yes yes yes Notes: a) Status is present day 80 o C unless otherwise noted; targets are for new membranes/CCMs b) Tested in CCM c) Indicates temperature from which bootstrapping stack must be achieved

318

Perspectives on Global Change: the TARGETS Approach  

NLE Websites -- All DOE Office Websites (Extended Search)

Perspectives on Global Change: the TARGETS Approach Perspectives on Global Change: the TARGETS Approach Speaker(s): Bert DeVries Date: February 6, 1998 - 12:00pm Location: 90-3148 Seminar Host/Point of Contact: Richard Sextro TARGETS is a simulation model designed to help explore the future of the world innovatively and to search for adequate operationalization of the concept of sustainable development. It incorporates a unique approach to the study of long-term global change and sustainability issues. The model is distinguished by its treatment of uncertainties through explicit formulation of cultural perspectives on controversial issues, and by its inclusion of a visualisation tool to enable transparent and interactive presentation of scenario analyses. TARGETS embodies an interdisciplinary approach, deals explictly with both physical and socio-economic

319

Computer-Aided Drug Target Search  

E-Print Network (OSTI)

Identification of the unknown targets of drugs, investigative drugs and herbal ingredients is an important task in drug discovery. It can potentially help in several aspects including: (1) determination of unknown therapeutic ...

Chen, Yuzong

320

Targeting cancer metabolism: a therapeutic window opens  

E-Print Network (OSTI)

Genetic events in cancer activate signalling pathways that alter cell metabolism. Clinical evidence has linked cell metabolism with cancer outcomes. Together, these observations have raised interest in targeting metabolic ...

Vander Heiden, Matthew G.

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


321

Analysis of Climate Policy Targets under Uncertainty  

E-Print Network (OSTI)

Although policymaking in response to the climate change is essentially a challenge of risk management, most studies of the relation of emissions targets to desired climate outcomes are either deterministic or subject to a ...

Jacoby, Henry D.

322

A Prospective Target for Advanced Biofuel Production  

NLE Websites -- All DOE Office Websites (Extended Search)

and P. D. Adams, "Structure of a three-domain sesquiterpene synthase: a prospective target for advanced biofuels production," Structure 19, 1876-1884 (2011). DOI: 10.1016...

323

Target Visualization at the National Ignition Facility  

SciTech Connect

As the National Ignition Facility continues its campaign to achieve ignition, new methods and tools will be required to measure the quality of the targets used to achieve this goal. Techniques have been developed to measure target surface features using a phase-shifting diffraction interferometer and Leica Microsystems confocal microscope. Using these techniques we are able to produce a detailed view of the shell surface, which in turn allows us to refine target manufacturing and cleaning processes. However, the volume of data produced limits the methods by which this data can be effectively viewed by a user. This paper introduces an image-based visualization system for data exploration of target shells at the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory. It aims to combine multiple image sets into a single visualization to provide a method of navigating the data in ways that are not possible with existing tools.

Potter, D

2011-11-21T23:59:59.000Z

324

Targeted Observations with an Airborne Wind Lidar  

Science Conference Proceedings (OSTI)

This study investigates the possibilities and limitations of airborne Doppler lidar for adaptive observations over the Atlantic Ocean. For the first time, a scanning 2-?m Doppler lidar was applied for targeted measurements during the Atlantic ...

M. Weissmann; R. Busen; A. Drnbrack; S. Rahm; O. Reitebuch

2005-11-01T23:59:59.000Z

325

Generalized integrability conditions and target space geometry  

E-Print Network (OSTI)

In some higher dimensional nonlinear field theories integrable subsectors with infinitely many conservation laws have been identified by imposing additional integrability conditions. Originally, the complex eikonal equation was chosen as integrability condition, but recently further generalizations have been proposed. Here we show how these new integrability conditions may be derived from the geometry of the target space and, more precisely, from the Noether currents related to a certain class of target space transformations.

C. Adam; J. Sanchez-Guillen

2005-08-01T23:59:59.000Z

326

Method and apparatus for producing cryogenic targets  

DOE Patents (OSTI)

An improved method and apparatus are given for producing cryogenic inertially driven fusion targets in the fast isothermal freezing (FIF) method. Improved coupling efficiency and greater availability of volume near the target for diagnostic purposes and for fusion driver beam propagation result. Other embodiments include a new electrical switch and a new explosive detonator, all embodiments making use of a purposeful heating by means of optical fibers. 6 figs.

Murphy, J.T.; Miller, J.R.

1984-08-07T23:59:59.000Z

327

Method and apparatus for producing cryogenic targets  

DOE Patents (OSTI)

An improved method and apparatus are given for producing cryogenic inertially driven fusion targets in the fast isothermal freezing (FIF) method. Improved coupling efficiency and greater availability of volume near the target for diagnostic purposes and for fusion driver beam propagation result. Other embodiments include a new electrical switch and a new explosive detonator, all embodiments making use of a purposeful heating by means of optical fibers.

Murphy, James T. (Los Alamos, NM); Miller, John R. (Penfield, NY)

1984-01-01T23:59:59.000Z

328

Cryostat including heater to heat a target  

DOE Patents (OSTI)

A cryostat is provided which comprises a vacuum vessel; a target disposed within the vacuum vessel; a heat sink disposed within the vacuum vesssel for absorbing heat from the detector; a cooling mechanism for cooling the heat sink; a cryoabsorption mechanism for cryoabsorbing residual gas within the vacuum vessel; and a heater for maintaining the target above a temperature at which the residual gas is cryoabsorbed in the course of cryoabsorption of the residual gas by the cryoabsorption mechanism.

Pehl, Richard H. (Berkeley, CA); Madden, Norman W. (Livermore, CA); Malone, Donald F. (Oakland, CA)

1990-01-01T23:59:59.000Z

329

Cryostat including heater to heat a target  

DOE Patents (OSTI)

A cryostat is provided which comprises a vacuum vessel; a target disposed within the vacuum vessel; a heat sink disposed within the vacuum vessel for absorbing heat from the detector; a cooling mechanism for cooling the heat sink; a cryoabsorption mechanism for cryoabsorbing residual gas within the vacuum vessel; and a heater for maintaining the target above a temperature at which the residual gas is cryoabsorbed in the course of cryoabsorption of the residual gas by the cryoabsorption mechanism. 2 figs.

Pehl, R.H.; Madden, N.W.; Malone, D.F.

1990-09-11T23:59:59.000Z

330

Method and apparatus for producing cryogenic targets  

DOE Patents (OSTI)

An improved method and apparatus are given for producing cryogenic inertially driven fusion targets in the fast isothermal freezing (FIF) method. Improved coupling efficiency and greater availability of volume near the target for diagnostic purposes and for fusion driver beam propagation result. Other embodiments include a new electrical switch and a new explosive detonator, all embodiments making use of a purposeful heating by means of optical fibers.

Murphy, J.T.; Miller, J.R.

1981-08-28T23:59:59.000Z

331

A Minimum Free Energy Reaction Path for the E2 Reaction between Fluoro Ethane and a Fluoride Ion  

E-Print Network (OSTI)

A Minimum Free Energy Reaction Path for the E2 Reaction between Fluoro Ethane and a Fluoride Ion, such as the mechanism and the free-energy profile, remains an important challenge not only for enzyme catalysis1 of the reaction free-energy profile is very cumbersome with constrained molecular dynamics (MD) and umbrella

Nielsen, Steven O.

332

An exact solution for finding minimum recombinant haplotype configurations on pedigrees with missing data by integer linear programming  

Science Conference Proceedings (OSTI)

We study the problem of reconstructing haplotype configurations from genotypes on pedigree data with missing alleles under the Mendelian law of inheritance and the minimum recombination principle, which is important for the construction of haplotype ... Keywords: branch-and-bound algorithm, haplotyping, integer linear programming, missing data imputation, pedigree analysis, recombination

Jing Li; Tao Jiang

2004-03-01T23:59:59.000Z

333

CO/sub 2/-laser ignition of DAPP targets  

Science Conference Proceedings (OSTI)

A pulse derived by shuttering a CO/sub 2/ laser operating in the cw mode has been used to ignite a diallyl phthalate pyrotechnic (DAPP) material. Data from this work along with some data taken earlier, while operating the laser in the pulse mode, are presented. When operating in the cw mode, a pulse is mechanically chopped out of the beam and focussed onto the DAPP material. It was found that the shuttered cw mode of operation gives a more reproducible pulse and a more accurate determination of the incident energy than the pulse mode does. The pulse widths for threshold ignition (50% ignitions) at different power levels have been determined for 254 and 127 mm-focal-length lenses which were used to focus the beam on the target. It was also found that targets could be penetrated without ignition of the DAPP material. A 2.54 mm-thick DAPP target is penetrated by the laser beam if the energy per unit area exceeds 29 +1 J/mm/sup 2/. Based on this study, recommendations are given for improving the present test procedures used for DAPP material.

Brannon, P.J.

1981-07-01T23:59:59.000Z

334

Liquid level controller  

DOE Patents (OSTI)

A system for maintaining two distinct sodium levels within the shell of a heat exchanger having a plurality of J-shaped modular tube bundles each enclosed in a separate shell which extends from a common base portion. A lower liquid level is maintained in the base portion and an upper liquid level is maintained in the shell enwrapping the long stem of the J-shaped tube bundles by utilizing standpipes with a notch at the lower end which decreases in open area the distance from the end of the stand pipe increases and a supply of inert gas fed at a constant rate to produce liquid levels, which will remain generally constant as the flow of liquid through the vessel varies. (auth)

Mangus, J.D.; Redding, A.H.

1975-07-15T23:59:59.000Z

335

A Liquid Hydrogen Target for Precision Measurement of the Weak Mixing Angle in Moller Scattering at SLAC  

DOE Green Energy (OSTI)

A 150 cm long liquid hydrogen target has been built for the SLAC End Station A E158 experiment. The target loop volume is 55 liters, and the maximum target heat load deposited by the electron beam is {approx} 700 W. The liquid hydrogen density fluctuation with full beam current (120 Hz repetition rate, 6 x 10{sup 11} electrons/spill) on target is well below 10{sup -4} level, which fulfills the requirement for a precision measurement of the weak mixing angle in the polarized electron-electron scattering process.

Weisend, John G

2002-11-07T23:59:59.000Z

336

A High Density Polarized Hydrogen Gas Target for Storage Rings  

E-Print Network (OSTI)

in a storage ring to study the target characteristics (nuclear polarization, target thickness, radiation 10 13 ~ H/cm 2 . The target polarization was unaffected by prolonged exposure of the target to beams in the use of polarized gases as internal targets in particle storage rings 1 . The first application

337

Optimized Parameters for a Mercury Jet Target  

Science Conference Proceedings (OSTI)

A study of target parameters for a high-power, liquid mercury jet target system for a neutrino factory or muon collider is presented. Using the MARS code, we simulate particle production initiated by incoming protons with kinetic energies between 2 and 100 GeV. For each proton beam energy, we maximize production by varying the geometric parameters of the target: the mercury jet radius, the incoming proton beam angle, and the crossing angle between the mercury jet and the proton beam. The number of muons surviving through an ionization cooling channel is determined as a function of the proton beam energy. We optimize the mercury jet target parameters: the mercury jet radius, the incoming proton beam angle and the crossing angle between the mercury jet and the proton beam for each proton beam energy. The optimized target radius varies from about 0.4 cm to 0.6 cm as the proton beam energy increases. The optimized beam angle varies from 75 mrad to 120 mrad. The optimized crossing angle is near 20 mrad for energies above 5 GeV. These values differ from earlier choices of 67 mrad for the beam angle and 33 mrad for the crossing angle. These new choices for the beam parameters increase the meson production by about 20% compared to the earlier parameters. Our study demonstrates that the maximum meson production efficiency per unit proton beam power occurs when the proton kinetic energy is in the range of 5-15 GeV. Finally, the dependence on energy of the number of muons at the end of the cooling channel is nearly identical to the dependence on energy of the meson production 50 m from the target. This demonstrates that the target parameters can be optimized without the additional step of running the distribution through a code such as ICOOL that simulates the bunching, phase rotation, and cooling.

Ding, X.; Kirk, H.

2010-12-01T23:59:59.000Z

338

Crosswalk of Target Capabilities to Core Capabilities The following table maps the target capabilities outlined in the former Target Capabilities List (TCL) version  

E-Print Network (OSTI)

capabilities outlined in the former Target Capabilities List (TCL) version 2.0, released in September 2007 was performed such that all thirty-seven target capabilities from the TCL were mapped; and each target target capability in the TCL. This crosswalk was created to support the transition that states

Harms, Kyle E.

339

OPTIMIZED FUEL INJECTOR DESIGN FOR MAXIMUM IN-FURNACE NOx REDUCTION AND MINIMUM UNBURNED CARBON  

SciTech Connect

Reaction Engineering International (REI) has established a project team of experts to develop a technology for combustion systems which will minimize NO x emissions and minimize carbon in the fly ash. This much need technology will allow users to meet environmental compliance and produce a saleable by-product. This study is concerned with the NO x control technology of choice for pulverized coal fired boilers, ?in-furnace NO x control,? which includes: staged low-NO x burners, reburning, selective non-catalytic reduction (SNCR) and hybrid approaches (e.g., reburning with SNCR). The program has two primary objectives: 1) To improve the performance of ?in-furnace? NO x control processes. 2) To devise new, or improve existing, approaches for maximum ?in-furnace? NO x control and minimum unburned carbon. The program involves: 1) fundamental studies at laboratory- and bench-scale to define NO reduction mechanisms in flames and reburning jets; 2) laboratory experiments and computer modeling to improve our two-phase mixing predictive capability; 3) evaluation of commercial low-NO x burner fuel injectors to develop improved designs, and 4) demonstration of coal injectors for reburning and low-NO x burners at commercial scale. The specific objectives of the two-phase program are to: 1 Conduct research to better understand the interaction of heterogeneous chemistry and two phase mixing on NO reduction processes in pulverized coal combustion. 2 Improve our ability to predict combusting coal jets by verifying two phase mixing models under conditions that simulate the near field of low-NO x burners. 3 Determine the limits on NO control by in-furnace NO x control technologies as a function of furnace design and coal type. 5 Develop and demonstrate improved coal injector designs for commercial low-NO x burners and coal reburning systems. 6 Modify the char burnout model in REI?s coal combustion code to take account of recently obtained fundamental data on char reactivity during the late stages of burnout. This will improve our ability to predict carbon burnout with low-NO x firing systems.

A.F. SAROFIM; BROWN UNIVERSITY. R.A. LISAUSKAS; D.B. RILEY, INC.; E.G. EDDINGS; J. BROUWER; J.P. KLEWICKI; K.A. DAVIS; M.J. BOCKELIE; M.P. HEAP; REACTION ENGINEERING INTERNATIONAL. D.W. PERSHING; UNIVERSITY OF UTAH. R.H. HURT

1998-01-01T23:59:59.000Z

340

Neutronic Characterization of the Megapie Target  

E-Print Network (OSTI)

The MEGAPIE project is one of the key experiments towards the feasibility of Accelerator Driven Systems. On-line operation and post-irradiation analysis will provide the scientific community with unique data on the behavior of a liquid spallation target under realistic irradiation conditions. A good neutronics performance of such a target is of primary importance towards an intense neutron source, where an extended liquid metal loop requires some dedicated verifications related to the delayed neutron activity of the irradiated PbBi. In this paper we report on the experimental characterization of the MEGAPIE neutronics in terms of the prompt neutron (PN) flux inside the target and the delayed neutron (DN) flux on the top of it. For the PN measurements, a complex detector, made of 8 microscopic fission chambers, has been built and installed in the central part of the target to measure the absolute neutron flux and its spatial distribution. Moreover, integral information on the neutron energy distribution as a function of the position along the beam axis could be extracted, providing integral constraints on the neutron production models implemented in transport codes such as MCNPX. For the DN measurement, we used a standard 3He counter and we acquired data during the start-up phase of the target irradiation in order to take sufficient statistics at variable beam power. Experimental results obtained on the PN flux characteristics and their comparison with MCNPX simulations are presented, together with a preliminary analysis of the DN decay time spectrum.

Stefano Panebianco; Olivier Bringer; Pavel Bokov; Sebastien Chabod; Frederic Chartier; Emmeric Dupont; Diane Dore; Xavier Ledoux; Alain Letourneau; Ludovic Oriol; Aurelien Prevost; Danas Ridikas; Jean-Christian Toussaint

2007-10-31T23:59:59.000Z

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


341

Divertor target for magnetic containment device  

DOE Patents (OSTI)

In a plasma containment device of a type having superconducting field coils for magnetically shaping the plasma into approximately the form of a torus, an improved divertor target for removing impurities from a "scrape off" region of the plasma comprises an array of water cooled swirl tubes onto which the scrape off flux is impinged. Impurities reflected from the divertor target are removed from the target region by a conventional vacuum getter system. The swirl tubes are oriented and spaced apart within the divertor region relative to the incident angle of the scrape off flux to cause only one side of each tube to be exposed to the flux to increase the burnout rating of the target. The divertor target plane is oriented relative to the plane of the path of the scrape off flux such that the maximum heat flux onto a swirl tube is less than the tube design flux. The containment device is used to contain the plasma of a tokamak fusion reactor and is applicable to other long pulse plasma containment systems.

Luzzi, Jr., Theodore E. (Garden City, NY)

1982-01-01T23:59:59.000Z

342

Magnetized target fusion and fusion propulsion.  

DOE Green Energy (OSTI)

Magnetized target fusion (MTF) is a thermonuclear fusion concept that is intermediate between the two mainline approaches, magnetic confinement and inertial confinement fusion (MCF and ICF). MTF incorporates some aspects of each and offers advantages over each of the mainline approaches. First, it provides a means of reducing the driver power requirements, thereby admitting a wider range of drivers than ICF. Second, the magnetic field is only used for insulation, not confinement, and the plasma is wall confined, so that plasma instabilities are traded in for hydrodynamic instabilities. However, the degree of compression required to reach fusion conditions is lower than for ICF, so that hydrodynamic instabilities are much less threatening. The standoff driver innovation proposes to dynamically form the target plasma and a gaseous shell that compresses and confines the target plasma. Therefore, fusion target fabrication is traded in for a multiplicity of plasma guns, which must work in synchrony. The standoff driver embodiment of MTF leads to a fusion propulsion system concept that is potentially compact and lightweight. We will discuss the underlying physics of MTF and some of the details of the fusion propulsion concept using the standoff driver approach. We discuss here the optimization of an MTF target design for space propulsion.

Kirkpatrick, R. C. (Ronald C.)

2001-01-01T23:59:59.000Z

343

Installation and Initial Operation of an On-line Target Imaging System for SNS  

Science Conference Proceedings (OSTI)

After several years of operation, the SNS now enters an era of megawatt class operation. At this intensity level, the target will be operating closer to its engineering limits and the beam profile on target must be carefully controlled. During commissioning and early operations, a temporary imaging system was used to measure the proton density on target. This system was not designed to survive the increasing power levels and it had to be removed in the second half of 2006. Since then, no direct measurement of beam properties at the target has been available. A collaboration was forged to remedy this situation, and has resulted in a new imaging system consisting of three major components: a thermal-sprayed luminescent coating deposited on the target nose, a radiation-tolerant optical system installed upstream of the target, and an image acquisition system integrated with the accelerator controls network. The design, installation, and integration of these components will be described. Initial beam measurements and image analysis results will be presented. Lessons learned during this initial operating experience have been documented and will guide the collaboration s future plans.

McManamy, Thomas J [ORNL; Banke, Glenn [Stony Brook University (SUNY); Blokland, Willem [ORNL; Brunson, Aly [ORNL; Dayton, Michael J [ORNL; Goetz, Kathleen C [ORNL; Janney, Jim G [ORNL; Lance, Michael J [ORNL; Maxey, L Curt [ORNL; Montgomery, Fred C [ORNL; Rosenblad, Peter M [ORNL; Sampath, Sanjay [Stony Brook University (SUNY); Simpson, Marc Livingstone [ORNL; Shea, Thomas J [ORNL

2010-01-01T23:59:59.000Z

344

NIF sets records for target shots, wavelength changes | National...  

National Nuclear Security Administration (NNSA)

Cebreros tests the activation of the target shroud The NIF team completed a record 28 laser shots on targets last month, along with two shots without targets. January also saw a...

345

Radiological Assessment of Target Materials for Accelerator Transmutation of Waste Applications  

SciTech Connect

This paper provides the radiation absorbed dose rates (rad-h{sup -1}) to a tissue-equivalent torus ring at 1 meter from radioactive spallation products in Ta, W, Pb, Bi, and LBE target materials used in Accelerator Transmutation of Waste (ATW) applications. No previous works have provided an estimate of the absorbed dose rates (rad-h{sup -1}) to tissue from activated targets for ATW applications. In addition, this paper provides the characterization of target materials of high-energy particle accelerators for the parameters of (a) spallation neutron yield (neutrons/proton), (b) spallation products yield (nuclides/proton), (c) energy-dependent spallation neutron fluence distribution (n-cm{sup -2} MeV{sup -1}), and (d) identification of the optimal target dimensions to yield the maximum radial spallation neutron leakage from the target. A beneficial characteristic of these target materials (Ta, W, Pb, Bi, and LBE) is they do not produce radioactive transuranic isotopes, which have very long half-lives and require special handling and disposition controls. In addition, these activated, spent targets are not considered high-level radioactive waste for disposal purposes such as spent fuel from a nuclear power reactor.

Vickers, Linda D

2003-11-15T23:59:59.000Z

346

Prototyping of the ILC Baseline Positron Target  

SciTech Connect

The ILC positron system uses novel helical undulators to create a powerful photon beam from the main electron beam. This beam is passed through a titanium target to convert it into electron-positron pairs. The target is constructed as a 1 m diameter wheel spinning at 2000 RPM to smear the 1 ms ILC pulse train over 10 cm. A pulsed flux concentrating magnet is used to increase the positron capture efficiency. It is cooled to liquid nitrogen temperatures to maximize the flatness of the magnetic field over the 1 ms ILC pulse train. We report on prototyping effort on this system.

Gronberg, J; Brooksby, C; Piggott, T; Abbott, R; Javedani, J; Cook, E

2012-02-29T23:59:59.000Z

347

Neutron single target spin asymmetries in SIDIS  

Science Conference Proceedings (OSTI)

The experiment E06-010 in Hall A at Jefferson Lab took data between November 2008 and February 2009 to directly measure, for the first time, the pion (and kaon) single "neutron" target-spin asymmetry (SSA) in semi-inclusive DIS from a polarized 3He target. Collins, Sivers (and Pretzelosity) neutron asymmetries are going to be extracted from the measured SSA. Details of the experiment are described together with the preliminary results of the ongoing analysis. Near future Hall A experiments on transverse nucleon spin structure are shorty reviewed.

Evaristo Cisbani

2010-04-01T23:59:59.000Z

348

Table III: Technical Targets for Catalyst Coated Membranes ...  

NLE Websites -- All DOE Office Websites (Extended Search)

III: Technical Targets for Catalyst Coated Membranes (CCMs): Stationary All targets must be achieved simultaneously Characteristics Units Calendar year 2002 status a 2005 2010...

349

Table I: Technical Targets for Catalyst Coated Membranes (CCMs...  

NLE Websites -- All DOE Office Websites (Extended Search)

I: Technical Targets for Catalyst Coated Membranes (CCMs): Automotive All targets must be achieved simultaneously Characteristics Units Calendar year 2002 status a 2005 2010...

350

PARS II Process Document - Over Target Baseline (OTB) Reporting...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Over Target Baseline (OTB) Reporting PARS II Process Document - Over Target Baseline (OTB) Reporting This document details the process by which contractors should conduct Over...

351

PARS II Process Document - Over Target Baseline (OTB) Reporting...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

PARS II Process Document - Over Target Baseline (OTB) Reporting PARS II Process Document - Over Target Baseline (OTB) Reporting This document details the process by which...

352

NIF Target Chamber Dedicated | National Nuclear Security Administratio...  

National Nuclear Security Administration (NNSA)

NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > NIF Target Chamber Dedicated NIF Target...

353

TARGET ENCLOSURE AND SYSTEM DESIGN FOR A MERCURY-TARGET NEUTRINO PRODUCING FACILITY  

E-Print Network (OSTI)

for mercury target system components, and various remote handling equipment used for maintenance tasks; therefore, replacing components after start-up operations must be done using remote handling equipment for radioactive component handling. The major components include the target containment system, a high magnetic

McDonald, Kirk

354

Improved isolation of the p-p underlying event based on minimum-bias trigger-associated hadron correlations  

E-Print Network (OSTI)

Some aspects of hadron production in p-p collisions remain unresolved, including the low-hadron-momentum structure of high-parton-energy dijets, separation of triggered dijets from the underlying event (UE), the systematics of multiple parton interactions and possible systematic underestimation of dijet contributions to high-energy nuclear collisions. In this study we apply a minimum-bias trigger-associated (TA) correlation analysis to p-p collisions. We extract a hard component from TA correlations that can be compared with measured jet fragment systematics derived from e-e collisions. The kinematic limits on jet fragment production may be determined. The same method may be extended to A-A collisions where the role of minimum-bias jets in spectra and correlations is strongly contested.

Thomas A. Trainor; Duncan J. Prindle

2013-10-01T23:59:59.000Z

355

THE BEHAVIOR OF THE 17 GHz SOLAR RADIUS AND LIMB BRIGHTENING IN THE SPOTLESS MINIMUM XXIII/XXIV  

Science Conference Proceedings (OSTI)

The current solar minimum has surprised the entire solar community because the spotless period is presently almost 2-3 years longer than the usual minima. To better understand this, we studied the variation of the solar radius and the polar limb brightening at 17 GHz, comparing the results from the minimum at the end of cycle XXIII with those of the previous one. Daily maps obtained by the Nobeyama Radioheliograph (NoRH) from 1992 through 2010 were analyzed. Whereas the variation of the solar radius at radio frequencies indicates the heating of the solar atmosphere due to solar activity, the limb brightening intensity depends on the organization of the polar magnetic field of the Sun, including the global dipole and the features formed around it. These features are more prominent during minima periods. As a common result, researchers have observed a decrease in both radius and limb brightness intensity at 17 GHz during the present minimum when compared with the previous one. The mean solar radius is 0.''9 {+-} 0.''6 smaller and the limb brightening reduced its intensity by around 20%. Both decrements are interpreted in terms of the weaker solar chromospheric activity of the present cycle. Measurement of the radius and limb brightening at 17 GHz can be used as an alternative solar activity index and should be included in the set of parameters used to predict future cycles.

Selhorst, C. L. [IP and D-Universidade do Vale do ParaIba-UNIVAP, Sao Jose dos Campos, SP (Brazil); Gimenez de Castro, C. G.; Valio, A. [CRAAM, Universidade Presbiteriana Mackenzie, Sao Paulo, SP (Brazil); Costa, J. E. R. [CEA, Instituto Nacional de Pesquisas Espaciais, Sao Jose dos Campos, SP (Brazil); Shibasaki, K., E-mail: caius@univap.br [NoRH, Nobeyama Radioheliograph (Japan)

2011-06-10T23:59:59.000Z

356

Geothermal heating retrofit at the Utah State Prison Minimum Security Facility. Final report, March 1979-January 1986  

DOE Green Energy (OSTI)

This report is a summary of progress and results of the Utah State Prison Geothermal Space Heating Project. Initiated in 1978 by the Utah State Energy Office and developed with assistance from DOE's Division of Geothermal and Hydropower Technologies PON program, final construction was completed in 1984. The completed system provides space and water heating for the State Prison's Minimum Security Facility. It consists of an artesian flowing geothermal well, plate heat exchangers, and underground distribution pipeline that connects to the existing hydronic heating system in the State Prison's Minimum Security Facility. Geothermal water disposal consists of a gravity drain line carrying spent geothermal water to a cooling pond which discharges into the Jordan River, approximately one mile from the well site. The system has been in operation for two years with mixed results. Continuing operation and maintenance problems have reduced the expected seasonal operation from 9 months per year to 3 months. Problems with the Minimum Security heating system have reduced the expected energy contribution by approximately 60%. To date the system has saved the prison approximately $18,060. The total expenditure including resource assessment and development, design, construction, performance verification, and reporting is approximately $827,558.

Not Available

1986-01-01T23:59:59.000Z

357

Improvements in dose calculation accuracy for small off-axis targets in high dose per fraction tomotherapy  

Science Conference Proceedings (OSTI)

Purpose: A recent field safety notice from TomoTherapy detailed the underdosing of small, off-axis targets when receiving high doses per fraction. This is due to angular undersampling in the dose calculation gantry angles. This study evaluates a correction method to reduce the underdosing, to be implemented in the current version (v4.1) of the TomoTherapy treatment planning software. Methods: The correction method, termed 'Super Sampling' involved the tripling of the number of gantry angles from which the dose is calculated during optimization and dose calculation. Radiochromic film was used to measure the dose to small targets at various off-axis distances receiving a minimum of 21 Gy in one fraction. Measurements were also performed for single small targets at the center of the Lucy phantom, using radiochromic film and the dose magnifying glass (DMG). Results: Without super sampling, the peak dose deficit increased from 0% to 18% for a 10 mm target and 0% to 30% for a 5 mm target as off-axis target distances increased from 0 to 16.5 cm. When super sampling was turned on, the dose deficit trend was removed and all peak doses were within 5% of the planned dose. For measurements in the Lucy phantom at 9.7 cm off-axis, the positional and dose magnitude accuracy using super sampling was verified using radiochromic film and the DMG. Conclusions: A correction method implemented in the TomoTherapy treatment planning system which triples the angular sampling of the gantry angles used during optimization and dose calculation removes the underdosing for targets as small as 5 mm diameter, up to 16.5 cm off-axis receiving up to 21 Gy.

Hardcastle, Nicholas; Bayliss, Adam; Wong, Jeannie Hsiu Ding; Rosenfeld, Anatoly B.; Tome, Wolfgang A. [Department of Human Oncology, University of Wisconsin-Madison, WI, 53792 (United States); Department of Physical Sciences, Peter MacCallum Cancer Centre, Melbourne, VIC 3002 (Australia) and Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW 2522 (Australia); Department of Human Oncology, University of Wisconsin-Madison, WI 53792 (United States); Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW 2522 (Australia) and Department of Biomedical Imaging, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur (Malaysia); Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW 2522 (Australia); Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53792 (United States); Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53792 (United States); Einstein Institute of Oncophysics, Albert Einstein College of Medicine of Yeshiva University, Bronx, New York 10461 (United States) and Centre for Medical Radiation Physics, University of Wollongong, Wollongong, NSW 2522 (Australia)

2012-08-15T23:59:59.000Z

358

An estimate for the sum of a Dirichlet series in terms of the minimum of its modulus on a vertical line segment  

Science Conference Proceedings (OSTI)

The behaviour of the sum of an entire Dirichlet series is analyzed in terms of the minimum of its modulus on a system of vertical line segments. Also a more general problem, connected with the Polya conjecture is posed and solved. It concerns the minimum modulus of an entire function with Fabri gaps and its growth along curves going to infinity. Bibliography: 33 titles.

Gaisin, Ahtyar M; Rakhmatullina, Zhanna G

2011-12-31T23:59:59.000Z

359

The Design of the PROMIS CompilerTowards Multi-Level Parallelization  

Science Conference Proceedings (OSTI)

Most systems that are under design and likely to be built in the future will employ hierarchical organization with many levels of memory hierarchy and parallelism. In order to efficiently utilize the multiple levels of parallelism available in the target ... Keywords: HTG (hierarchical task graph), ILP (instruction-level parallelization), IR (internal representation), compiler, loop parallelization

Hideki Saito; Nicholas J. Stavrakos; Constantine D. Polychronopoulos; Alex Nicolau

2000-04-01T23:59:59.000Z

360

Online scheduling of targeted advertisements for IPTV  

Science Conference Proceedings (OSTI)

Behavioral targeting of content to users is a huge and lucrative business, valued as a $20 billion industry that is growing rapidly. So far dominant players in this field like Google and Yahoo examine the user requests coming to their servers and place ...

Murali Kodialam; T. V. Lakshman; Sarit Mukherjee; Limin Wang

2010-03-01T23:59:59.000Z

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


361

Manufacturing complex silica aerogel target components  

SciTech Connect

Aerogel is a material used in numerous components in High Energy Density Physics targets. In the past these components were molded into the proper shapes. Artifacts left in the parts from the molding process, such as contour irregularities from shrinkage and density gradients caused by the skin, have caused LANL to pursue machining as a way to make the components.

Defriend Obrey, Kimberly Ann [Los Alamos National Laboratory; Day, Robert D [Los Alamos National Laboratory; Espinoza, Brent F [Los Alamos National Laboratory; Hatch, Doug [Los Alamos National Laboratory; Patterson, Brian M [Los Alamos National Laboratory; Feng, Shihai [Los Alamos National Laboratory

2008-01-01T23:59:59.000Z

362

High density laser-driven target  

DOE Patents (OSTI)

A high density target for implosion by laser energy composed of a central quantity of fuel surrounded by a high-Z pusher shell with a low-Z ablator-pusher shell spaced therefrom forming a region filled with low-density material.

Lindl, John D. (San Ramon, CA)

1981-01-01T23:59:59.000Z

363

Fixed-target option for the SSC  

Science Conference Proceedings (OSTI)

Three questions addressed are: (1) is slow extraction technically and economically feasible at the SSC; (2) can gas jet targets be used parasitically to produce secondary beams; (3) how can parasitic test beams be obtained during collider operation. 15 references. (GHT)

Colton, E.

1984-01-01T23:59:59.000Z

364

Learning classification rules for multiple target attributes  

Science Conference Proceedings (OSTI)

Among predictive models, 'if-then' rule sets are one of the most expressive and human readable model representations. Most of the existing approaches for rule learning focus on predicting a single target attribute/class. In practice, however, we encounter ...

Bernard enko; Sao Deroski

2008-05-01T23:59:59.000Z

365

EM Corporate Performance Metrics, Complex Level  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Complex Level Complex Level July, 2013 Performance Measure Unit Lifecycle Total Estimate Pre-2013 Lifecycle Values 2013 Target 2014 Target Pu packaged for long-term disposition Number of Containers 5,089 5,089 5,089 5,089 eU packaged for disposition Number of Containers 8,198 8,016 8,016 8,016 Pu/U residues packaged for disposition Kilograms of Bulk 107,828 107,828 107,828 107,828 DU & U packaged for disposition Metric Tons 736,801 32,452 45,317 76,817 Liquid Waste eliminated Thousands of Gallons 91,907 5,340 6,260 6,812 Liquid Waste Tanks closed Number of Tanks 239 11 11 13 HLW packaged for disposition Number of Containers 24,183 3,802 4,077 4,283 SNF packaged for disposition Metric Tons of Heavy Metal 2,450 2,128 2,128 2,128

366

A New Freeze Concentration Process for Minimum Effluent Process in Bleached Pulp  

SciTech Connect

This project researches freeze concentration as a primary volume reduction technology for bleaching plant effluents from paper-pulp mills before they are treated by expensive technologies, such as incineration, for the destruction of the adsorbable organic halogens. Previous laboratory studies show that freeze concentration has a greater than 99.5% purification efficiency for volatile, semivolatile, and nonprocess elements, or any other solute, thus producing pure ice that can be reused in the mill as water. The first section evaluates the anticipated regulatory and public pressures associated with implementing the technology; the remaining sections deal with the experimental results from a scaled-up freeze concentration process in a 100-liter pilot-plant at Tufts University. The results of laboratory scale experiments confirmed that the freeze concentration technology could be an efficient volume reduction technology for the above elements and for removing adsorbable organic hologens and or nonprocess elements from recycled water. They also provide the necessary data for designing and operating a larger pilot plant, and identify the technical problems encountered in the scale-up and the way they could be addressed in the larger scale plants. This project was originally planned to include the operation of a large pilot plant in the facilities of Swenson Process Equipment Inc., and a field test at a pulp mill, but the paper company withdrew its financial support for the field test. In place of a final economic evaluation after the field test, a preliminary evaluation based on the small pilot plant data predicts an economically reasonable freeze concentration process in the case of reduction of the bleaching-effluent flow to less than 5 m3/kkg pulp, a target anticipated in the near future.

Qian, Ru-Ying; Botsaris, Gregory D.

2001-03-06T23:59:59.000Z

367

Influence of lateral target size on hot electron production and electromagnetic pulse emission from laser-irradiated metallic targets  

SciTech Connect

The influences of lateral target size on hot electron production and electromagnetic pulse emission from laser interaction with metallic targets have been investigated. Particle-in-cell simulations at high laser intensities show that the yield of hot electrons tends to increase with lateral target size, because the larger surface area reduces the electrostatic field on the target, owing to its expansion along the target surface. At lower laser intensities and longer time scales, experimental data characterizing electromagnetic pulse emission as a function of lateral target size also show target-size effects. Charge separation and a larger target tending to have a lower target potential have both been observed. The increase in radiation strength and downshift in radiation frequency with increasing lateral target size can be interpreted using a simple model of the electrical capacity of the target.

Chen Ziyu; Li Jianfeng; Yu Yong; Li Xiaoya; Peng Qixian; Zhu Wenjun [National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Wang Jiaxiang [State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China)

2012-11-15T23:59:59.000Z

368

Longitudinal Tracking of Direct Drive Inertial Fusion Targets  

Science Conference Proceedings (OSTI)

Technical Paper / The Technology of Fusion Energy - Inertial Fusion Technology: Targets and Chambers

J. D. Spalding; L. C. Carlson; M. S. Tillack; N. B. Alexander; D. T. Goodin; R. W. Petzoldt

369

Example Performance Targets and Efficiency Packages Greensburg, Kansas (Presentation)  

SciTech Connect

This presentation shows the energy performance targets and efficiency packages for residential buildings in Greensburg, Kansas.

Anderson, R.

2008-01-01T23:59:59.000Z

370

Target Injection Placement Accuracy Improvement with Electrostatic Steering  

Science Conference Proceedings (OSTI)

Technical Paper / The Technology of Fusion Energy - Inertial Fusion Technology: Targets and Chambers

Ron Petzoldt; Emanuil Valmianski; Lane Carlson; Phan Huynh

371

Indirect Drive Warm-Loaded Ignition Target Design  

SciTech Connect

This document summarizes the Indirect Drive Warm-Loaded Ignition Target design. These targets either use a fill tube or the capsule is strong enough to withstand the room temperature pressure of the DT fuel. Only features that affect the design of the NIF Cryogenic Target System (NCTS) are presented. The design presented is the current thinking and may evolve further. The NCTS should be designed to accommodate a range of targets and target scales, as described here. The interface location between the target and the NCTS cryostat is at the target base / gripper joint, the tamping gas gland/gland joint, and the electrical plug/receptacle joint.

Bernat, T P; Gibson, C R

2004-09-03T23:59:59.000Z

372

Visualization of Target Inspection data at the National Ignition Facility  

SciTech Connect

As the National Ignition Facility continues its campaign to achieve ignition, new methods and tools will be required to measure the quality of the target capsules used to achieve this goal. Techniques have been developed to measure capsule surface features using a phase-shifting diffraction interferometer and Leica Microsystems confocal microscope. These instruments produce multi-gigabyte datasets which consist of tens to hundreds of files. Existing software can handle viewing a small subset of an entire dataset, but none can view a dataset in its entirety. Additionally, without an established mode of transport that keeps the target capsules properly aligned throughout the assembly process, a means of aligning the two dataset coordinate systems is needed. The goal of this project is to develop web based software utilizing WebGL which will provide high level overview visualization of an entire dataset, with the capability to retrieve finer details on demand, in addition to facilitating alignment of multiple datasets with one another based on common features that have been visually identified by users of the system.

Potter, D; Antipa, N

2012-02-16T23:59:59.000Z

373

Investigation to Discover Most Effective Method of Teaching Target Costing to Construction-Minded Individuals  

E-Print Network (OSTI)

The construction industry is in the midst of a progressive change in the way projects unfold from design and development to closeout and maintenance. There is a greater demand on contractors to build projects faster, with higher quality and an increased level of detail, while keeping costs lower than ever. Therefore, to meet such demands contractors must turn to an alternative approach of improving product and process with target costing. However, the adoption of target costing by the construction industry has been slow due to limitations in user understanding of the system. The objective of this paper is to identify an effective approach for teaching target costing to construction-focused individuals, by establishing improved user understanding with visual aids, and by determining if user comprehension is influenced by the complexity of the visual supports provided in the lessons. The study challenged the long-implied assumption that the construction community is composed of visual learners, while also differentiating between the levels of success for supporting figures based upon their degree of detail. Results of this study will provide the basis for the development of target costing material that is designed specifically for use in the education of construction industry professionals in Target Cost Estimating.

Hullum, Joshua James

2011-05-01T23:59:59.000Z

374

Exploiting level sensitive latches in wire pipelining  

E-Print Network (OSTI)

The present research presents procedures for exploitation of level sensitive latches in wire pipelining. The user gives a Steiner tree, having a signal source and set of destination or sinks, and the location in rectangular plane, capacitive load and required arrival time at each of the destinations. The user also defines a library of non-clocked (buffer) elements and clocked elements (flip-flop and latch), also known as synchronous elements. The first procedure performs concurrent repeater and synchronous element insertion in a bottom-up manner to find the minimum latency that may be achieved between the source and the destinations. The second procedure takes additional input (required latency) for each destination, derived from previous procedure, and finds the repeater and synchronous element assignments for all internal nodes of the Steiner tree, which minimize overall area used. These procedures utilize the latency and area advantages of latch based pipelining over flip-flop based pipelining. The second procedure suggests two methods to tackle the challenges that exist in a latch based design. The deferred delay padding technique is introduced, which removes the short path violations for latches with minimal extra cost.

Seth, Vikram

2004-12-01T23:59:59.000Z

375

Determination of Coke Calcination Level and Anode Baking Level  

Science Conference Proceedings (OSTI)

Presentation Title, Determination of Coke Calcination Level and Anode Baking Level Application and Reproducibility of Lc Based Methods. Author(s), Stein...

376

State-level Benefits of Renewable Energy | Open Energy Information  

Open Energy Info (EERE)

State-level Benefits of Renewable Energy State-level Benefits of Renewable Energy Jump to: navigation, search Tool Summary Name: State-level Benefits of Renewable Energy Agency/Company /Organization: Oak Ridge National Laboratory Sector: Energy Focus Area: Energy Efficiency, Economic Development Phase: Create a Vision Topics: Co-benefits assessment Resource Type: Publications, Guide/manual Website: info.ornl.gov/sites/publications/files/Pub5501.pdf References: http://info.ornl.gov/sites/publications/files/Pub5501.pdf Logo: State-level Benefits of Renewable Energy This report describes benefits attributable to state-level energy efficiency programs. Nationwide, state-level energy efficiency programs have targeted all sectors of the economy and have employed a wide range of methods to promote energy efficiency.

377

Therapeutic Antibody Targeting of Individual Notch Receptors  

NLE Websites -- All DOE Office Websites (Extended Search)

Therapeutic Antibody Targeting of Individual Notch Receptors Print Therapeutic Antibody Targeting of Individual Notch Receptors Print Notch receptors are widely expressed transmembrane proteins through which mammalian cells communicate to regulate cell fate and growth, and defects in Notch signalling are linked to many cancers. Using phage display technology, a multi-department team at Genentech has produced synthetic antibodies that act as potent and specific antagonists of Notch1 and Notch2. The cover, by Gregóire Vion of Salamander Design Studios (www.grgwr.com), depicts communication between a ligand-expressing cell (right) stimulating Notch signalling in an adjacent cell. The receptor-cell membrane expresses Notches 1 and 2 (red and blue); action of a specific antagonist means that only the blue signal is transduced to the nucleus. Article Link (PDF)

378

Target Diagnostics Supports NIF's Path to Ignition  

SciTech Connect

The physics requirements derived from the National Ignition Facility (NIF) experimental campaigns are leading to a wide variety of target diagnostics. Software development for the control and analysis of these diagnostics is included in the NIF Integrated Computer Control System, Diagnostic Control System and Data Visualization. These projects implement the configuration, controls, data analysis and visual representation of most of these diagnostics. To date, over 40 target diagnostics have been developed to support NIF experiments. In 2011 diagnostics were developed or enhanced to measure Ignition performance in a high neutron yield environment. Performance is optimized around four key variables: Adiabat (a) which is the strength and timing of four shocks delivered to the target, Velocity (V) of the imploding target, Mix (M) is the uniformity of the burn, and the Shape (S) of the imploding Deuterium Tritium (DT) hot spot. The diagnostics used to measure each of these parameters is shown in figure 1. Adiabat is measured using the Velocity Interferometer System for Any Reflector (VISAR) diagnostic consisting of three streak cameras. To provide for more accurate adiabat measurements the VISAR streak cameras were enhanced in FY11 with a ten comb fiducial signal controller to allow for post shot correction of the streak camera sweep non-linearity. Mix is measured by the Neutron Time of Flight (NTOF) and Radiochemical Analysis of Gaseous Samples (RAGS) diagnostics. To accommodate high neutron yield shots, NTOF diagnostic controls are being modified to use Mach Zehnder interferometer signals to allow the digitizers to be moved from near the target chamber to the neutron shielded diagnostic mezzanine. In December 2011 the first phase of RAGS diagnostic commissioning will be completed. This diagnostic will analyze the tracers that are added to NIF target capsules that undergo nuclear reactions during the shot. These gases are collected and purified for nuclear counting by the RAGS system. Three new instrument controllers were developed and commissioned to support this diagnostic. A residual-gas analyzer (RGA) instrument measures the gas content at various points in the system. The Digital Gamma Spectrometer instrument measures the radiological spectrum of the decaying gas isotopes. A final instrument controller was developed to interface to a PLC based Gas collection system. In order to support the implosion velocity measurements an additional Gated X-ray Detector (GXD) diagnostic was tested and commissioned. This third GXD views the target through a slit contained in its snout and allows the other GXD diagnostics to be used for measuring the shape on the same shot. In order to measure the implosion shape in a high neutron environment, Actide Readout In A Neutron Environment (ARIANE) and Neutron Imaging (NI) diagnostics were commissioned. The controls for ARIANE, a fixed port gated x-ray imager, contain a neutron shielded camera and micro channel plate pulser with its neutron sensitive electronics located in the diagnostic mezzanine. The NI diagnostic is composed of two Spectral Instruments SI-1000 cameras located 20M from the target and provides neutron images of the DT hot spot for high yield shots. The development and commissioning of these new or enhanced diagnostics in FY11 have provided meaningful insight that facilitates the optimization of the four key Ignition variables. In FY12 they will be adding three new diagnostics and enhancing four existing diagnostics in support of the continuing optimization series of campaigns.

Shelton, R

2011-12-07T23:59:59.000Z

379

Recovery of niobium from irradiated targets  

DOE Patents (OSTI)

A process for selective separation of niobium from proton irradiated molybdenum targets is provided and includes dissolving the molybdenum target in a hydrogen peroxide solution to form a first ion-containing solution, contacting the first ion-containing solution with a cationic resin whereby ions selected form the group consisting of molybdenum, biobium, technetium, selenium, vanadium, arsenic, germanium, zirconium and rubidium remain in a second ion-containing solution while ions selected from the group consisting of rubidium, zinc, beryllium, cobalt, iron, manganese, chromium, strontium, yttrium and zirconium are selectively adsorbed by the cationic resin; adjusting the pH of the second ion-containing solution to within a range of from about 5.0 to about 6.0; contacting the pH adjusting second ion-containing solution with a dextran-based material for a time to selectively separate niobium from the solution and recovering the niobium from the dextran-based material.

Phillips, Dennis R. (Los Alamos, NM); Jamriska, Sr., David J. (Los Alamos, NM); Hamilton, Virginia T. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

380

Achromatic illumination system for small targets  

DOE Patents (OSTI)

A pair of light beams is directed to provide illumination that is substantially uniform from all directions on a small target by a system comprising a pair of corrector windows, a pair of planar reflecting surfaces, a pair of paraboloidal mirrors and a reflecting mirror cavity. The components are arranged so that each of the beams passes through a corrector and is reflected from the planar surface to the paraboloidal mirror, from which it is focused through a hole in the planar surface to the interior of the cavity. The surface of the interior portion of the cavity is shaped to reflect the focused beam three times before the focused reflected beam strikes the target.

Sigler, Robert D. (Ann Arbor, MI)

1979-01-01T23:59:59.000Z

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


381

A high power liquid hydrogen target for the Mainz A4 parity violation experiment  

E-Print Network (OSTI)

We present a new powerful liquid hydrogen target developed for the precise study of parity violating electron scattering on hydrogen and deuterium. This target has been designed to have minimal target density fluctuations under the heat load of a 20$\\mu$A CW 854.3 MeV electron beam without rastering the electron beam. The target cell has a wide aperture for scattered electrons and is axially symmetric around the beam axis. The construction is optimized to intensify heat exchange by a transverse turbulent mixing in the hydrogen stream, which is directed along the electron beam. The target is constructed as a closed loop circulating system cooled by a helium refrigerator. It is operated by a tangential mechanical pump with an optional natural convection mode. The cooling system supports up to 250 watts of the beam heating removal. Deeply subcooled liquid hydrogen is used for keeping the in-beam temperature below the boiling point. The target density fluctuations are found to be at the level 10$^{-3}$ at a beam current of 20 $\\mu$A.

I. Altarev; E. Schilling; S. Baunack; L. Capozza; J. Diefenbach; K. Grimm; Th. Hammel; D. vonHarrach; Y. Imai; E. M. Kabuss; R. Kothe; J. H. Lee; A. LopesGinja; F. E. Maas; A. SanchezLorente; G. Stephan; C. Weinrich

2005-04-25T23:59:59.000Z

382

International Spine Radiosurgery Consortium Consensus Guidelines for Target Volume Definition in Spinal Stereotactic Radiosurgery  

SciTech Connect

Purpose: Spinal stereotactic radiosurgery (SRS) is increasingly used to manage spinal metastases. However, target volume definition varies considerably and no consensus target volume guidelines exist. This study proposes consensus target volume definitions using common scenarios in metastatic spine radiosurgery. Methods and Materials: Seven radiation oncologists and 3 neurological surgeons with spinal radiosurgery expertise independently contoured target and critical normal structures for 10 cases representing common scenarios in metastatic spine radiosurgery. Each set of volumes was imported into the Computational Environment for Radiotherapy Research. Quantitative analysis was performed using an expectation maximization algorithm for Simultaneous Truth and Performance Level Estimation (STAPLE) with kappa statistics calculating agreement between physicians. Optimized confidence level consensus contours were identified using histogram agreement analysis and characterized to create target volume definition guidelines. Results: Mean STAPLE agreement sensitivity and specificity was 0.76 (range, 0.67-0.84) and 0.97 (range, 0.94-0.99), respectively, for gross tumor volume (GTV) and 0.79 (range, 0.66-0.91) and 0.96 (range, 0.92-0.98), respectively, for clinical target volume (CTV). Mean kappa agreement was 0.65 (range, 0.54-0.79) for GTV and 0.64 (range, 0.54-0.82) for CTV (P<.01 for GTV and CTV in all cases). STAPLE histogram agreement analysis identified optimal consensus contours (80% confidence limit). Consensus recommendations include that the CTV should include abnormal marrow signal suspicious for microscopic invasion and an adjacent normal bony expansion to account for subclinical tumor spread in the marrow space. No epidural CTV expansion is recommended without epidural disease, and circumferential CTVs encircling the cord should be used only when the vertebral body, bilateral pedicles/lamina, and spinous process are all involved or there is extensive metastatic disease along the circumference of the epidural space. Conclusions: This report provides consensus guidelines for target volume definition for spinal metastases receiving upfront SRS in common clinical situations.

Cox, Brett W., E-mail: coxb@mskcc.org [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Spratt, Daniel E. [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Lovelock, Michael [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Bilsky, Mark H. [Department of Surgery, Division of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Surgery, Division of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Lis, Eric [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Ryu, Samuel [Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan (United States)] [Department of Radiation Oncology, Henry Ford Hospital, Detroit, Michigan (United States); Sheehan, Jason [Department of Neurosurgery, University of Virginia School of Medicine, Charlottesville, Virginia (United States)] [Department of Neurosurgery, University of Virginia School of Medicine, Charlottesville, Virginia (United States); Gerszten, Peter C. [Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, UPMC Presbyterian, Pittsburgh, Pennsylvania (United States)] [Department of Neurological Surgery and Radiation Oncology, University of Pittsburgh Medical Center, UPMC Presbyterian, Pittsburgh, Pennsylvania (United States); Chang, Eric [Department of Radiation Oncology, University of Southern California Keck School of Medicine, Health Sciences Campus, Los Angeles, California (United States)] [Department of Radiation Oncology, University of Southern California Keck School of Medicine, Health Sciences Campus, Los Angeles, California (United States); Gibbs, Iris; Soltys, Scott [Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California (United States)] [Department of Radiation Oncology, Stanford University School of Medicine, Stanford, California (United States); Sahgal, Arjun [Department of Radiation Oncology, Princess Margaret Hospital and the Sunnybrook Health Sciences Center, University of Toronto, Toronto, Ontario (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital and the Sunnybrook Health Sciences Center, University of Toronto, Toronto, Ontario (Canada); Deasy, Joe [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States)] [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York (United States); Flickinger, John; Quader, Mubina [Department of Radiation Oncology, University of Pittsburgh Medical Center, UPMC Presbyterian, Pittsburgh, Pennsylvania (United States)] [Department of Radiation Oncology, University of Pittsburgh Medical Center, UPMC Presbyterian, Pittsburgh, Pennsylvania (United States); Mindea, Stefan [Department of Neurosurgery, Stanford University School of Medicine, Stanford, California (United States)] [Department of Neurosurgery, Stanford University School of Medicine, Stanford, California (United States); and others

2012-08-01T23:59:59.000Z

383

Noise suppression in reconstruction of low-Z target megavoltage cone-beam CT images  

Science Conference Proceedings (OSTI)

Purpose: To improve the image contrast-to-noise (CNR) ratio for low-Z target megavoltage cone-beam CT (MV CBCT) using a statistical projection noise suppression algorithm based on the penalized weighted least-squares (PWLS) criterion. Methods: Projection images of a contrast phantom, a CatPhan{sup Registered-Sign} 600 phantom and a head phantom were acquired by a Varian 2100EX LINAC with a low-Z (Al) target and low energy x-ray beam (2.5 MeV) at a low-dose level and at a high-dose level. The projections were then processed by minimizing the PWLS objective function. The weighted least square (WLS) term models the noise of measured projection and the penalty term enforces the smoothing constraints of the projection image. The variance of projection data was chosen as the weight for the PWLS objective function and it determined the contribution of each measurement. An anisotropic quadratic form penalty that incorporates the gradient information of projection image was used to preserve edges during noise reduction. Low-Z target MV CBCT images were reconstructed by the FDK algorithm after each projection was processed by the PWLS smoothing. Results: Noise in low-Z target MV CBCT images were greatly suppressed after the PWLS projection smoothing, without noticeable sacrifice of the spatial resolution. Depending on the choice of smoothing parameter, the CNR of selected regions of interest in the PWLS processed low-dose low-Z target MV CBCT image can be higher than the corresponding high-dose image.Conclusion: The CNR of low-Z target MV CBCT images was substantially improved by using PWLS projection smoothing. The PWLS projection smoothing algorithm allows the reconstruction of high contrast low-Z target MV CBCT image with a total dose of as low as 2.3 cGy.

Wang Jing; Robar, James; Guan Huaiqun [Department of Radiation Oncology, UT Southwestern Medical Center, Dallas, Texas 75235 (United States); Departments of Radiation Oncology and Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, B3H1V7 (Canada); Department of Radiation Oncology, Saint Vincent Hospital, Worcester, Massachusetts 01608 (United States)

2012-08-15T23:59:59.000Z

384

Synthetic LDL as targeted drug delivery vehicle  

SciTech Connect

The present invention provides a synthetic LDL nanoparticle comprising a lipid moiety and a synthetic chimeric peptide so as to be capable of binding the LDL receptor. The synthetic LDL nanoparticle of the present invention is capable of incorporating and targeting therapeutics to cells expressing the LDL receptor for diseases associated with the expression of the LDL receptor such as central nervous system diseases. The invention further provides methods of using such synthetic LDL nanoparticles.

Forte, Trudy M. (Berkeley, CA); Nikanjam, Mina (Richmond, CA)

2012-08-28T23:59:59.000Z

385

Targeted Radiotherapy of Estrogen Receptor Positive Tumors  

DOE Green Energy (OSTI)

The overall objectives of the proposal were to develop estrogen receptor (ER) binding small molecule radiopharmaceuticals for targeted radiotherapy of ER positive (ER+) tumors. In particular, this proposal focused on embedding a {sup 186,188}Re or a {sup 32}P radionuclide into an estrogen steroidal framework by isosteric substitution such that the resulting structure is topologically similar to the estrogen (estrogen mimic). The estrogen mimic molecules expected to bind to the ER and exhibit biodistribution akin to that of native estrogen due to structural mimicry. It is anticipated that the {sup 186,188}Re- or a {sup 32}P-containing estrogen mimics will be useful for targeted molecular radiotherapy of ER+ tumors. It is well established that the in vivo target tissue uptake of estrogen like steroidal molecules is related to the binding of the steroids to sex hormone binding globulin (SHBG). SHBG is important in the uptake of estrogens and testosterone in target tissues by SHBG receptors on the cell surface. However, hitherto the design of estrogen like small molecule radiopharmaceuticals was focused on optimizing ER binding characteristics without emphasis on SHBG binding properties. Consequently, even the molecules with good ER affinity in vitro, performed poorly in biodistribution studies. Based on molecular modeling studies the proposal focused on developing estrogen mimics 1-3 which were topologically similar to native estrogens, and form hydrogen bonds in ER and SHBG in the same manner as those of native estrogens. To this end the technical objectives of the proposal focused on synthesizing the rhenium-estrone and estradiol mimics 1 and 2 respectively, and phosphorous estradiol mimic 3 and to assess their stability and in vitro binding characteristics to ER and SHBG.

Raghavan Rajagopalan

2006-08-31T23:59:59.000Z

386

Improving Targeted Radionuclide Therapy Using Nuclear Nanotechnology  

E-Print Network (OSTI)

The objectives of this thesis are to produce radioactive antibody-conjugated gold nanoparticles to improve the efficacy of targeted radionuclide therapy for the treatment of cancer, and to demonstrate that this product can be produced at Texas A&M University. We have proposed a method for determining the distribution of radioactive nuclei per nanoparticle, which is critical for determining radiotherapeutic efficacy. Using the distribution of radioactive nuclei per nanoparticle, we have produced methods for calculating the radiative dose to tissue using nano-improved targeted radionuclide therapy, but more importantly we propose procedures to experimentally determine the efficacy of targeted radionuclide therapy improved by application of radioactive nanomaterials in combination with immunotherapy, nanomaterial cytotoxicity, and other cancer therapies such as chemotherapy. These methods can also be used to determine the efficacy of combinatory treatments as a function of time. Characterization of the antibody-nanoparticle attachment is critical; we have demonstrated successful antibody-nanoparticle conjugation using atomic force microscopy, dynamic light scattering, and agarose gel electrophoresis, providing more conclusive evidence of successful conjugation compared to flow cytometry. We provide a mathematical derivation from basic electron-transport principles which demonstrates the theoretical dosimetric advantages of applying radioactive nanomaterials to targeted radionuclide therapy. The general formulae can be applied to any tumor size, any radionuclide, and any pharmacokinetic nanoparticle distribution throughout the body, ultimately allowing a quick method of approximating the necessary activation time and treatment dosage parameters for a specific patient without burdensome Monte Carlo computational simulations. We further demonstrated that nano-TRT dosage to tumors should be considered as a function of radial position rather than average, as the dose across the tumor may be noticeably non-uniform causing some portions of the tumor to receive (potentially) significantly less dose than average.

Evans, Jordan Andrew

2013-05-01T23:59:59.000Z

387

In Beam Tests of Implanted Helium Targets  

E-Print Network (OSTI)

Targets consisting of 3,4He implanted into thin aluminum foils (approximately 100, 200 or 600 ug/cm^2) were prepared using intense (a few uA) helium beams at low energy (approximately 20, 40 or 100 keV). Uniformity of the implantation was achieved by a beam raster across a 12 mm diameter tantalum collimator at the rates of 0.1 Hz in the vertical direction and 1 Hz in the horizontal direction. Helium implantation into the very thin (approximately 80-100 ug/cm^2) aluminum foils failed to produce useful targets (with only approximately 10% of the helium retained) due to an under estimation of the range by the code SRIM. The range of low energy helium in aluminum predicted by Northcliffe and Shilling and the NIST online tabulation are observed on the other hand to over estimate the range of low energy helium ions in aluminum. An attempt to increase the amount of helium by implanting a second deeper layer was also carried out, but it did not significantly increase the helium content beyond the blistering limit (approximately 6 x 10^17 helium/cm^2). The implanted targets were bombarded with moderately intense 4He and 16O beams of 50-100 particle nA . Rutherford Back Scattering of 1.0 and 2.5 MeV proton beams and recoil helium from 15.0 MeV oxygen beams were used to study the helium content and profile before, during and after bombardments. We observed the helium content and profile to be very stable even after a prolonged bombardment (up to two days) with moderately intense beams of 16O or 4He. Helium implanted into thin (aluminum) foils is a good choice for thin helium targets needed, for example, for a measurement of the 3he(a,g)7Be reaction and the associated S34 astrophysical cross section factor (S-factor).

J. E. McDonald; R. H. France III; R. A. Jarvis; M. W. Ahmed; M. A. Blackston; Th. Delbar; M. Gai; T. J. Kading; Y. Parpottas; B. A. Perdue; R. M. Prior; D. A. Rubin; M. C. Spraker; J. D. Yeomans; L. Weissman; H. R. Weller; E. L. Wilds Jr; ;; UHartford; GCSU; LNS/UConn; TUNL/Duke; UCL/LLN; Yale; NGCSU

2006-08-16T23:59:59.000Z

388

Method for foam encapsulating laser targets  

DOE Patents (OSTI)

Foam encapsulated laser fusion targets are made by positioning a fusion fuel-filled sphere within a mold cavity of suitable configuration and dimensions, and then filling the cavity with a material capable of producing a low density, microcellular foam, such as cellulose acetate dissolved in an acetone-based solvent. The mold assembly is dipped into an ice water bath to gel the material and thereafter soaked in the water bath to leach out undesired components, after which the gel is frozen, then freeze-dried wherein water and solvents sublime and the gel structure solidifies into a low-density microcellular foam, thereafter the resulting foam encapsulated target is removed from the mold cavity. The fuel-filled sphere is surrounded by foam having a thickness of about 10 to 100 .mu.m, a cell size of less than 2 .mu.m, and density of 0.065 to 0.6 .times. 10.sup.3 kg/m.sup.3. Various configured foam-encapsulated targets capable of being made by this encapsulation method are illustrated.

Hendricks, Charles D. (Livermore, CA)

1977-01-01T23:59:59.000Z

389

OMEGA polar-drive target designs  

SciTech Connect

Low-adiabat polar-drive (PD) [Skupsky et al., Phys. Plasmas 11, 2763 (2004)] implosion designs for the OMEGA [Boehly et al., Opt. Commun. 133, 495 (1997)] laser are described. These designs for cryogenic deuterium-tritium and warm plastic shells use a temporal laser pulse shape with three pickets followed by a main pulse [Goncharov et al., Phys. Rev. Lett. 104, 165001 (2010)]. The designs are at two different on-target laser intensities, with different in-flight aspect ratios (IFARs). These designs permit studies of implosion energetics and target performance closer to ignition-relevant intensities ({approx}7 Multiplication-Sign 10{sup 14} W/cm{sup 2} at the quarter-critical surface, where nonlocal heat conduction and laser-plasma interactions can play an important role) but at lower values of IFAR {approx} 22 or at lower intensity ({approx}3 Multiplication-Sign 10{sup 14} W/cm{sup 2}) but at a higher IFAR (IFAR {approx} 32, where shell instability can play an important role). PD geometry requires repointing of laser beams to improve shell symmetry. The higher-intensity designs optimize target performance by repointing beams to a lesser extent, compensating for the reduced equatorial drive by increasing the energies of the repointed beams. They also use custom beam profiles that improve equatorial illumination at the expense of irradiation at higher latitudes. These latter designs will be studied when new phase plates for the OMEGA Laser System, corresponding to the custom beam profiles, are obtained.

Radha, P. B.; Marozas, J. A.; Marshall, F. J.; Shvydky, A.; Collins, T. J. B.; Goncharov, V. N.; McKenty, P. W.; Sangster, T. C.; Skupsky, S. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States); McCrory, R. L.; Meyerhofer, D. D. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States); Department of Mechanical Engineering and Department of Physics, University of Rochester, 250 E. River Road, Rochester, New York 14623 (United States)

2012-08-15T23:59:59.000Z

390

Development of advanced drilling, completion, and stimulation systems for minimum formation damage and improved efficiency: A program overview  

SciTech Connect

The Department of Energy`s (DOE) Natural Gas Resource and Extraction Program consists of industry/government co-sponsored research, development, and demonstration (RD&D) projects, which focus on gas recovery from both conventional and nonconventional resources. The Drilling, Completion, and Stimulation (DCS) Project focuses on advanced, non-damaging technology systems and equipment for improving gas recovery from conventional and nonconventional reservoirs. As operators move from development of current day economically attractive gas-field development to the lower permeability geologic regions of domestic onshore plays, increasing the emphasis on minimum formation damage DCS will permit economic development of gas reserves. The objective of the Project is to develop and demonstrate cost-effective, advanced technology to accelerate widespread use and acceptance of minimum formation damage DCS systems. The goal of this product development effort is to reduce costs and improve the overall efficiency of vertical, directional, and horizontally drilled wells in gas formations throughout the US. The current focus of the Project is on the development of underbalanced drilling technology and minimum formation damage stimulation technology concurrently with the appropriate completion hardware to improve the economics of domestic natural gas field development. Ongoing drilling technology projects to be discussed include development of an electromagnetic measurement while drilling system for directional and horizontal drilling in underbalanced drilling applications and the development of a steerable air percussion drilling system for hard formation drilling and improved penetration rates. Ongoing stimulation technology projects to be discussed include introduction of carbon dioxide/sand fracturing technology for minimal formation damage.

Layne, A.W.; Yost, A.B. II

1994-07-01T23:59:59.000Z

391

Company Level Imports  

U.S. Energy Information Administration (EIA) Indexed Site

All Petroleum & Other Liquids Reports All Petroleum & Other Liquids Reports Company Level Imports With Data for September 2013 | Release Date: November 27, 2013 | Next Release Date: December 30, 2013 | XLS Previous Issues Month: September 2013 August 2013 July 2013 June 2013 May 2013 April 2013 March 2013 February 2013 January 2013 prior issues Go September 2013 Import Highlights Monthly data on the origins of crude oil imports in September 2013 has been released and it shows that two countries exported more than 1 million barrels per day to the United States (see table below). The top five exporting countries accounted for 75 percent of United States crude oil imports in September while the top ten sources accounted for approximately 92 percent of all U.S. crude oil imports. The top five sources of US crude

392

Liquid level detector  

DOE Patents (OSTI)

A liquid level detector for conductive liquids for vertical installation in a tank, the detector having a probe positioned within a sheath and insulated therefrom by a seal so that the tip of the probe extends proximate to but not below the lower end of the sheath, the lower end terminating in a rim that is provided with notches, said lower end being tapered, the taper and notches preventing debris collection and bubble formation, said lower end when contacting liquid as it rises will form an airtight cavity defined by the liquid, the interior sheath wall, and the seal, the compression of air in the cavity preventing liquid from further entry into the sheath and contact with the seal. As a result, the liquid cannot deposit a film to form an electrical bridge across the seal.

Tshishiku, Eugene M. (Augusta, GA)

2011-08-09T23:59:59.000Z

393

Real time cross-layer adaptation for minimum energy wireless image transport using bit error rate control  

Science Conference Proceedings (OSTI)

In wireless multimedia systems, significant power is consumed in processing image/video content This research looks specifically at the energy cost of wireless image/video transport focusing on image quality as an end metric. The quality of received ... Keywords: PSNR values, real-time cross-layer adaptation, minimum-energy wireless image transport, bit error rate control, wireless multimedia systems, wireless image-video content processing, communication channel, image-video data compression, received signal quality, minimal RF energy consumption, optimization procedure, varying channel conditions, baseband signal, RF power amplifier, RF PA, optimal transmission bit error rate value, closed loop feedback control

J. Natarajan; S. Sen; A. Chatterjee

2011-07-01T23:59:59.000Z

394

Implication of a covenant to diligently develop and mine in hard mineral leases that provide for minimum rents or royalties  

SciTech Connect

An examination of the status of the implied covenant to develop in hard mineral leases which contain minimum royalty provisions discusses the rationale for the implied development covenant, restrictions on its use, and scenarios under which mining delays occur. Later sections delineate the rules of construction and interpretative tests used in various mining jurisdictions. The author then analyzes the logic of these tests in light of the regulatory and economic climate of today's mining industry. He finds that this climate forces prudent mining companies to delay mine development in many instances. The substantial relation test considers all factors that are indicative of the original parties expectations; the demand for development rule does not.

Bender, J.C.

1987-01-01T23:59:59.000Z

395

Efficient laser absorption and enhanced electron yield in the laser-target interaction by using a cone-nanolayer target  

Science Conference Proceedings (OSTI)

A cone-nanolayer target that combines the advantages of the conical and layered geometries for electron acceleration in laser-target interaction is proposed. Two-dimensional particle-in-cell (PIC) simulations show that the cone-nanolayer target can enhance laser absorption and electron yield. With suitable choice of the laser and target parameters, the cone-nanolayer target can be a controllable source of hot electrons at desired energy ranges.

Cao Lihua; Cai Hongbao [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Center for Applied Physics and Technology, Peking University, Beijing 100871 (China); Chen Mo; Wu Sizhong [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Zhao Zongqing; Gu Yuqiu [Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900 (China); Yu Wei [Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800 (China); Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Yu, M. Y. [Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China); Institute for Theoretical Physics I, Ruhr University, Bochum D-44780 (Germany); He, X. T. [Institute of Applied Physics and Computational Mathematics, Beijing 100088 (China); Center for Applied Physics and Technology, Peking University, Beijing 100871 (China); Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)

2011-05-15T23:59:59.000Z

396

Feasibility study Part I - Thermal hydraulic analysis of LEU target for {sup 99}Mo production in Tajoura reactor  

SciTech Connect

The Renewable Energies and Water Desalination Research Center (REWDRC), Libya, will implement the technology for {sup 99}Mo isotope production using LEU foil target, to obtain new revenue streams for the Tajoura nuclear research reactor and desiring to serve the Libyan hospitals by providing the medical radioisotopes. Design information is presented for LEU target with irradiation device and irradiation Beryllium (Be) unit in the Tajoura reactor core. Calculated results for the reactor core with LEU target at different level of power are presented for steady state and several reactivity induced accident situations. This paper will present the steady state thermal hydraulic design and transient analysis of Tajoura reactor was loaded with LEU foil target for {sup 99}Mo production. The results of these calculations show that the reactor with LEU target during the several cases of transient are in safe and no problems will occur. (author)

Bsebsu, F.M.; Abotweirat, F. [Reactor Department, Renewable Energies and Water Desalination Research Cente, P.O. Box 30878 Tajoura, Tripoli (Libyan Arab Jamahiriya)], E-mail: Bsebso@yahoo.com, E-mail: abutweirat@yahoo.com; Elwaer, S. [Radiochemistry Department, Renewable Energies and Water Desalination Research Cente, P.O. Box 30878 Tajoura, Tripoli (Libyan Arab Jamahiriya)], E-mail: samiwer@yahoo.com

2008-07-15T23:59:59.000Z

397

A method for deriving a 4D-interpolated balanced planning target for mobile tumor radiotherapy  

SciTech Connect

Purpose: Tumor control and normal tissue toxicity are strongly correlated to the tumor and normal tissue volumes receiving high prescribed dose levels in the course of radiotherapy. Planning target definition is, therefore, crucial to ensure favorable clinical outcomes. This is especially important for stereotactic body radiation therapy of lung cancers, characterized by high fractional doses and steep dose gradients. The shift in recent years from population-based to patient-specific treatment margins, as facilitated by the emergence of 4D medical imaging capabilities, is a major improvement. The commonly used motion-encompassing, or internal-target volume (ITV), target definition approach provides a high likelihood of coverage for the mobile tumor but inevitably exposes healthy tissue to high prescribed dose levels. The goal of this work was to generate an interpolated balanced planning target that takes into account both tumor coverage and normal tissue sparing from high prescribed dose levels, thereby improving on the ITV approach. Methods: For each 4DCT dataset, 4D deformable image registration was used to derive two bounding targets, namely, a 4D-intersection and a 4D-composite target which minimized normal tissue exposure to high prescribed dose levels and maximized tumor coverage, respectively. Through definition of an ''effective overlap volume histogram'' the authors derived an ''interpolated balanced planning target'' intended to balance normal tissue sparing from prescribed doses with tumor coverage. To demonstrate the dosimetric efficacy of the interpolated balanced planning target, the authors performed 4D treatment planning based on deformable image registration of 4D-CT data for five previously treated lung cancer patients. Two 4D plans were generated per patient, one based on the interpolated balanced planning target and the other based on the conventional ITV target. Plans were compared for tumor coverage and the degree of normal tissue sparing resulting from the new approach was quantified. Results: Analysis of the 4D dose distributions from all five patients showed that while achieving tumor coverage comparable to the ITV approach, the new planning target definition resulted in reductions of lung V{sub 10}, V{sub 20}, and V{sub 30} of 6.3% {+-} 1.7%, 10.6% {+-} 3.9%, and 12.9% {+-} 5.5%, respectively, as well as reductions in mean lung dose, mean dose to the GTV-ring and mean heart dose of 8.8% {+-} 2.5%, 7.2% {+-} 2.5%, and 10.6% {+-} 3.6%, respectively. Conclusions: The authors have developed a simple and systematic approach to generate a 4D-interpolated balanced planning target volume that implicitly incorporates the dynamics of respiratory-organ motion without requiring 4D-dose computation or optimization. Preliminary results based on 4D-CT data of five previously treated lung patients showed that this new planning target approach may improve normal tissue sparing without sacrificing tumor coverage.

Roland, Teboh; Hales, Russell; McNutt, Todd; Wong, John; Simari, Patricio; Tryggestad, Erik [Department of Radiation Oncology and Molecular Radiation Sciences, Johns Hopkins University School of Medicine, 401 North Broadway, Baltimore, Maryland 21231 (United States)

2012-01-15T23:59:59.000Z

398

TRANSIENT CONTROL LEVEL PHILOSOPHY AND ...  

Science Conference Proceedings (OSTI)

Page 1. TRANSIENT CONTROL LEVEL PHILOSOPHY AND IMPLEMENTATION II. Techniques and Equipment for Making TCL Tests ...

2013-05-17T23:59:59.000Z

399

A Comparison among Strategies for Interpolating Maximum and Minimum Daily Air Temperatures. Part II: The Interaction between Number of Guiding Variables and the Type of Interpolation Method  

Science Conference Proceedings (OSTI)

In a comparative experiment, the sequence of daily maximum and minimum temperatures for 1976 was interpolated over England and Wales to a resolution of 1 km using partial thin plate splines, ordinary kriging, trend surface, and an automatic ...

Claire H. Jarvis; Neil Stuart

2001-06-01T23:59:59.000Z

400

Evaluation of the AR4 Climate Models Simulated Daily Maximum Temperature, Minimum Temperature, and Precipitation over Australia Using Probability Density Functions  

Science Conference Proceedings (OSTI)

The coupled climate models used in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change are evaluated. The evaluation is focused on 12 regions of Australia for the daily simulation of precipitation, minimum temperature, ...

S. E. Perkins; A. J. Pitman; N. J. Holbrook; J. McAneney

2007-09-01T23:59:59.000Z

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


401

A Comparison among Strategies for Interpolating Maximum and Minimum Daily Air Temperatures. Part I: The Selection of Guiding Topographic and Land Cover Variables  

Science Conference Proceedings (OSTI)

This paper explores the derivation and selection of a comprehensive set of continuous topographic and land coverrelated variables to guide the interpolation of daily maximum and minimum temperatures over England and Wales, for an entire annual ...

Claire H. Jarvis; Neil Stuart

2001-06-01T23:59:59.000Z

402

The Effects of Data Gaps on the Calculated Monthly Mean Maximum and Minimum Temperatures in the Continental United States: A Spatial and Temporal Study  

Science Conference Proceedings (OSTI)

Gaps in otherwise regularly scheduled observations are often referred to as missing data. This paper explores the spatial and temporal impacts that data gaps in the recorded daily maximum and minimum temperatures have on the calculated monthly ...

David E. Stooksbury; Craig D. Idso; Kenneth G. Hubbard

1999-05-01T23:59:59.000Z

403

Prediction of Summer Maximum and Minimum Temperature over the Central and Western United States: The Roles of Soil Moisture and Sea Surface Temperature  

Science Conference Proceedings (OSTI)

A statistical model based on canonical correlation analysis (CCA) was used to explore climatic associations and predictability of JuneAugust (JJA) maximum and minimum surface air temperatures (Tmax and Tmin) as well as the frequency of Tmax ...

Eric J. Alfaro; Alexander Gershunov; Daniel Cayan

2006-04-01T23:59:59.000Z

404

Development and Testing of Canada-Wide Interpolated Spatial Models of Daily MinimumMaximum Temperature and Precipitation for 19612003  

Science Conference Proceedings (OSTI)

The application of trivariate thin-plate smoothing splines to the interpolation of daily weather data is investigated. The method was used to develop spatial models of daily minimum and maximum temperature and daily precipitation for all of ...

Michael F. Hutchinson; Dan W. McKenney; Kevin Lawrence; John H. Pedlar; Ron F. Hopkinson; Ewa Milewska; Pia Papadopol

2009-04-01T23:59:59.000Z

405

Radiation damage induced by GeV electrons in W-Re and Cu targets  

NLE Websites -- All DOE Office Websites (Extended Search)

3 3 UCRL-JC-148049 July 2002 Linear Collider Collaboration Tech Notes Radiation Damage Induced by GeV Electrons in W-Re Targets for Next Generation Linear Colliders M.-J. Caturla 1* , S. Roesler 2 , V. K. Bharadwaj 3 , D. C. Schultz 3 , J. C. Sheppard 3 , J. Marian 1 , B. D. Wirth 1 , W. Stein 1 and A. Sunwoo 1 1 Lawrence Livermore National Laboratory Livermore, CA 2 CERN, CH-1211 Geneva 23, Switzerland 3 Stanford Linear Accelerator Center Menlo Park, California s: We have studied the structural damage of W-Re targets produced by electrons with energies of several GeV and under different conditions of total number of electrons, beam shape and target depth. We report the differences in damage levels for different designs considered in the construction of the next generation of linear accelerators, and discuss the possible effects in the lifetime

406

IMPACT OF TARGET MATERIAL ACTIVATION ON PERSONNEL EXPOSURE AND RADIOACTIVE CONTAMINATION IN THE NATIONAL IGNITION FACILITY  

Science Conference Proceedings (OSTI)

Detailed activation analyses are performed for the different materials under consideration for use in the target capsules and hohlraums used during the ignition campaign on the National Ignition Facility. Results of the target material activation were additionally used to estimate the levels of contamination within the NIF target chamber and the workplace controls necessary for safe operation. The analysis examined the impact of using Be-Cu and Ge-doped CH capsules on the external dose received by workers during maintenance activities. Five days following a 20 MJ shot, dose rates inside the Target Chamber (TC) due to the two proposed capsule materials are small ({approx} 1 {micro}rem/h). Gold and depleted-uranium (DU) are considered as potential hohlraum materials. Following a shot, gold will most probably get deposited on the TC first wall. On the other hand, while noble-gas precursors from the DU are expected to stay in the TC, most of the noble gases are pumped out of the chamber and end up on the cryopumps. The dose rates inside the TC due to activated gold or DU, at 5 days following a 20 MJ shot, are about 1 mrem/h. Dose rates in the vicinity of the cryo-pumps (containing noble 'fission' gases) drop-off to about 1 mrem/h during the first 12 hours following the shot. Contamination from activation of NIF targets will result in the NIF target chamber exceeding DOE surface contamination limits. Objects removed from the TC will need to be managed as radioactive material. However, the results suggest that airborne contamination from resuspension of surface contamination will not be significant and is at levels that can be managed by negative ventilation when accessing the TC attachments.

Khater, H; Epperson, P; Thacker, R; Beale, R; Kohut, T; Brereton, S

2009-06-30T23:59:59.000Z

407

Evolutionary Drift Models for Moving Target Defense  

Science Conference Proceedings (OSTI)

One of the biggest challenges faced by cyber defenders is that attacks evolve more rapidly than our ability to recognize them. We propose a moving target defense concept in which the means of detection is set in motion. This is done by moving away from static signature-based detection and instead adopting biological modeling techniques that describe families of related sequences. We present here one example for how to apply evolutionary models to cyber sequences, and demonstrate the feasibility of this technique on analysis of a complex, evolving software project. Specifically, we applied sequence-based and profile-based evolutionary models and report the ability of these models to recognize highly volatile code regions. We found that different drift models reliably identify different types of evolutionarily related code regions. The impact is that these (and possibly other) evolutionary models could be used in a moving target defense in which the "signature" being used to detect sequence-based behaviors is not a fixed signature but one that can recognize new variants of a known family based on multiple evolutionary models.

Oehmen, Christopher S.; Peterson, Elena S.; Teuton, Jeremy R.

2012-10-31T23:59:59.000Z

408

Die-target for dynamic powder consolidation  

DOE Patents (OSTI)

A die/target is disclosed for consolidation of a powder, especially an atomized rapidly solidified metal powder, to produce monoliths by the dynamic action of a shock wave, especially a shock wave produced by the detonation of an explosive charge. The die/target comprises a rectangular metal block having a square primary surface with four rectangular mold cavities formed therein to receive the powder. The cavities are located away from the geometrical center of the primary surface and are distributed around such center while also being located away from the geometrical diagonals of the primary surface to reduce the action of reflected waves so as to avoid tensile cracking of the monoliths. The primary surface is covered by a powder retention plate which is engaged by a flyer plate to transmit the shock wave to the primary surface and the powder. Spawl plates are adhesively mounted on other surfaces of the block to act as momentum traps so as to reduce reflected waves in the block. 4 figs.

Flinn, J.E.; Korth, G.E.

1985-06-27T23:59:59.000Z

409

A high power beam-on-target test of liquid lithium target for RIA.  

Science Conference Proceedings (OSTI)

Experiments were conducted to demonstrate the stable operation of a windowless liquid lithium target under extreme thermal loads that are equivalent to uranium beams from the proposed Rare Isotope Accelerator (RIA) driver linac. The engineering and safety issues accompanying liquid lithium systems are first discussed. The liquid metal technology knowledge base generated primarily for fast reactors, and liquid metal cooled fusion reactors, was applied to the development of these systems in a nuclear physics laboratory setting. The use of a high energy electron beam for simulating a high power uranium beam produced by the RIA driver linac is also described. Calculations were performed to obtain energy deposition profiles produced by electron beams at up to a few MeV to compare with expected uranium beam energy deposition profiles. It was concluded that an experimental simulation using a 1-MeV electron beam would be a valuable tool to assess beam-jet interaction. In the experiments, the cross section of the windowless liquid lithium target was 5 mm x 10 mm, which is a 1/3rd scale prototype target, and the velocity of the liquid lithium was varied up to 6 m/s. Thermal loads up to 20 kW within a beam spot diameter of 1mm were applied on the windowless liquid lithium target by the 1-MeV electron beam. The calculations showed that the maximum power density and total power deposited within the target, from the electron beam, was equivalent to that of a 200-kW, 400-MeV/u uranium beam. It was demonstrated that the windowless liquid lithium target flowing at velocities as low as 1.8 m/s stably operated under beam powers up to 20 kW without disruption or excessive vaporization.

Nolen, J.; Reed, C.; Novick, V.; Specht, J.; Plotkin, P.; Momozaki,Y.; Gomes, I.

2005-08-29T23:59:59.000Z

410

Microsoft CEP server and online behavioral targeting  

Science Conference Proceedings (OSTI)

In this demo, we present the Microsoft Complex Event Processing (CEP) Server, Microsoft CEP for short. Microsoft CEP is an event stream processing system featured by its declarative query language and its multiple consistency levels ...

M. H. Ali; C. Gerea; B. S. Raman; B. Sezgin; T. Tarnavski; T. Verona; P. Wang; P. Zabback; A. Ananthanarayan; A. Kirilov; M. Lu; A. Raizman; R. Krishnan; R. Schindlauer; T. Grabs; S. Bjeletich; B. Chandramouli; J. Goldstein; S. Bhat; Ying Li; V. Di Nicola; X. Wang; David Maier; S. Grell; O. Nano; I. Santos

2009-08-01T23:59:59.000Z

411

Targeting of drugs and nanoparticles to tumors  

E-Print Network (OSTI)

The various types of cells that comprise the tumor mass all carry molecular markers that are not expressed or are expressed at much lower levels in normal cells. These differentially expressed molecules can be used as ...

Ruoslahti, Erkki

412

Environmental Protection Agency (EPA) Target Finder | Open Energy  

Open Energy Info (EERE)

Environmental Protection Agency (EPA) Target Finder Environmental Protection Agency (EPA) Target Finder Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Environmental Protection Agency (EPA) Target Finder Agency/Company /Organization: United States Environmental Protection Agency Partner: Energy Star Sector: Energy Focus Area: Buildings Phase: Evaluate Options, Develop Goals, Prepare a Plan Resource Type: Guide/manual, Online calculator User Interface: Website Website: www.energystar.gov/index.cfm?c=new_bldg_design.bus_target_finder Web Application Link: www.energystar.gov/index.cfm?fuseaction=target_finder. Cost: Free References: Target Finder[1] State and Local Legislation Leveraging ENERGY STAR[2] Target Finder is a no-cost online tool that enables architects and building owners to set energy targets and receive an EPA energy performance score

413

An Efficient Message Passing Algorithm for Multi-Target Tracking  

E-Print Network (OSTI)

We propose a new approach for multi-sensor multi-target tracking by constructing statistical models on graphs with continuous-valued nodes for target states and discrete-valued nodes for data association hypotheses. These ...

Chen, Zhexu (Michael)

414

Method for mounting laser fusion targets for irradiation  

DOE Patents (OSTI)

Methods for preparing laser fusion targets of the ball-and-disk type are disclosed. Such targets are suitable for irradiation with one or two laser beams to produce the requisite uniform compression of the fuel material.

Fries, R. Jay (Los Alamos, NM); Farnum, Eugene H. (Los Alamos, NM); McCall, Gene H. (Los Alamos, NM)

1977-07-26T23:59:59.000Z

415

Beryllium Capsule Coating Development for NIF Targets (A25674)  

E-Print Network (OSTI)

Proc. Of The 17th Target Fabrication Specialists Meeting, San Diego, California, 2006; To Be Published In Fusion Science And Technology17th Target Fabrication Specialists Meeting San Diego California, US, 2006999613495

Xu, H.W.

2006-12-08T23:59:59.000Z

416

Characterization Specifications for Baseline Indirect Drive NIF Targets (A23749)  

E-Print Network (OSTI)

Proc. Of 14th Target Fabrication Specialists Meeting, West Point, New York, 2001, To Be Published In Fusion Technology14th Target Fabrication Specialists Meeting West Point New York, US, 2001999607160

Stephens, R.B.

2001-10-02T23:59:59.000Z

417

NIF sets records for target shots, wavelength changes | National...  

NLE Websites -- All DOE Office Websites (Extended Search)

Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > NIF sets records for target shots, wavelength changes NIF sets records for target shots,...

418

Operation of Target Diagnostics in a Petawatt Laser Environment (invited)  

Science Conference Proceedings (OSTI)

The operation of target diagnostics in a high-energy petawatt laser environment is made challenging by the large number of energetic electrons, hard x rays, and energetic particles produced in lasertarget interactions.

Stoeckl, C.; Glebov, V.Yu.; Jaanimagi, P.A.; Knauer, J.P.; Meyerhofer, D.D.; Sangster, T.C.; Storm, M.; Sublett, S.; Theoblad, W.; Key, M.H.; MacKinnon, A.J.; Patel, P.; Neely, D.; Norreys, P.A.

2006-09-28T23:59:59.000Z

419

Process-Based Cost Modeling to Support Target Value Design  

E-Print Network (OSTI)

in Designing to Target Cost. 12th Annual Conference of thethe Hurdle of First Cost: Action Research in TargetD.T. (1987). A Future for Cost Modelling: Building Cost

Nguyen, Hung Viet

2010-01-01T23:59:59.000Z

420

Targeting the Poor: Evidence from a Field Experiment in Indonesia  

E-Print Network (OSTI)

This paper reports an experiment in 640 Indonesian villages on three approaches to target the poor: proxy means tests (PMT), where assets are used to predict consumption; community targeting, where villagers rank everyone ...

Alatas, Vivi

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


421

Optimization Studies for ISOL Type High-Powered Targets  

Science Conference Proceedings (OSTI)

The research studied one-step and two-step Isotope Separation on Line (ISOL) targets for future radioactive beam facilities with high driver-beam power through advanced computer simulations. As a target material uranium carbide in the form of foils was used because of increasing demand for actinide targets in rare-isotope beam facilities and because such material was under development in ISAC at TRIUMF when this project started. Simulations of effusion were performed for one-step and two step targets and the effects of target dimensions and foil matrix were studied. Diffusion simulations were limited by availability of diffusion parameters for UCx material at reduced density; however, the viability of the combined diffusion?effusion simulation methodology was demonstrated and could be used to extract physical parameters such as diffusion coefficients and effusion delay times from experimental isotope release curves. Dissipation of the heat from the isotope-producing targets is the limiting factor for high-power beam operation both for the direct and two-step targets. Detailed target models were used to simulate proton beam interactions with the targets to obtain the fission rates and power deposition distributions, which were then applied in the heat transfer calculations to study the performance of the targets. Results indicate that a direct target, with specification matching ISAC TRIUMF target, could operate in 500-MeV proton beam at beam powers up to ~40 kW, producing ~8 1013 fission/s with maximum temperature in UCx below 2200 C. Targets with larger radius allow higher beam powers and fission rates. For the target radius in the range 9-mm to 30-mm the achievable fission rate increases almost linearly with target radius, however, the effusion delay time also increases linearly with target radius.

Remec, Igor [Oak Ridge National Laboratory] [Oak Ridge National Laboratory; Ronningen, Reginald Martin [Michigan State University] [Michigan State University

2013-09-24T23:59:59.000Z

422

Monitoring and Targeting (M&T): A Low Investment, Low Risk Approach to Energy Cost Savings  

E-Print Network (OSTI)

Monitoring and Targeting (M&T) is a disciplined approach to energy management that ensures that energy resources are used to their maximum economic advantage. M&T serves two principal functions: Ongoing, day-to-day control of energy use Planned improvements in energy efficiency Key elements of an M&T program include: Measurement of utility (steam, fuel, power) consumption levels The establishment of consumption targets that take variations in key variables (e.g., throughput, conversion, product quality...etc.) into account Comparison of actual vs. target energy usage "Exception reports" to highlight areas experiencing unusually good or unusually poor performance An established protocol, involving both management and operating personnel, for reviewing and acting upon the energy information available. Tracking and reporting of the savings achieved Periodic review and reassessment of the energy targets. This paper briefly reviews key M&T concepts and their application in industrial settings. Practical aspects of program implementation -such as data entry, target setting, report generation, software requirements, and personnel orientation and training -are discussed. Representative savings produced by M&T in a variety of plant types also are presented. These savings typically are achieved with little or no capital investment.

McMullan, A.; Rutkowski, M.; Karp, A.

2001-05-01T23:59:59.000Z

423

Nuclear physics with internal targets in electron storage rings  

Science Conference Proceedings (OSTI)

Two key experiments in nuclear physics will be discussed in order to illustrate the advantages of the internal target method and demonstrate the power of polarization techniques in electron scattering studies. The progress of internal target experiments will be discussed and the technology of internal polarized target development will be reviewed.

Roy J. Holt

1987-01-01T23:59:59.000Z

424

Geolocation of Multiple Targets from Airborne Video Without Terrain Data  

Science Conference Proceedings (OSTI)

The task of geolocating targets from airborne video is required for many applications in surveillance, law enforcement, reconnaissance, etc. The usual approaches to target geolocation involve terrain data, single target tracking, gimbal control of camera ... Keywords: Geolocation, IMU-Camera calibration, Tracking, Unmanned aerial vehicle

Kyung Min Han; Guilherme N. Desouza

2011-04-01T23:59:59.000Z

425

Targets for the production of radioisotopes and method of assembly  

DOE Patents (OSTI)

A target for preparation of radioisotopes by nuclear bombardment, and a method for its assembly are provided. A metallic sample to be bombarded is enclosed within a metallic support structure and the resulting target subjected to heat and pressure to effect diffusion bonds therebetween. The bonded target is capable of withstanding prolonged exposure to nuclear bombardment without thermal damage to the sample.

Quinby, Thomas C. (Kingston, TN)

1976-01-01T23:59:59.000Z

426

Method of making segmented pyrolytic graphite sputtering targets  

DOE Patents (OSTI)

Anisotropic pyrolytic graphite wafers are oriented and bonded together such that the graphite's high thermal conductivity planes are maximized along the back surface of the segmented pyrolytic graphite target to allow for optimum heat conduction away from the sputter target's sputtering surface and to allow for maximum energy transmission from the target's sputtering surface.

McKernan, Mark A. (Livermore, CA); Alford, Craig S. (Tracy, CA); Makowiecki, Daniel M. (Livermore, CA); Chen, Chih-Wen (Livermore, CA)

1994-01-01T23:59:59.000Z

427

WP1: Targeted and informative forecast system design  

E-Print Network (OSTI)

WP1: Targeted and informative forecast system design Emma Suckling, Leonard A. Smith and David Stainforth EQUIP Meeting ­ August 2011 Edinburgh #12;Targeted and informative forecast system design Develop models to support decision making (1.4) #12;Targeted and informative forecast system design KEY QUESTIONS

Stevenson, Paul

428

Exploring underwater target detection by imaging polarimetry and correlation techniques  

E-Print Network (OSTI)

1 Exploring underwater target detection by imaging polarimetry and correlation techniques M *Corresponding author: ayman.al-falou@isen.fr Underwater target detection is investigated by combining active. This experimentally study illustrates the potential of polarization imaging for underwater target detection and opens

Paris-Sud XI, Université de

429

Oak Ridge Isotope Production Cyclotron Facility and Target Handling  

SciTech Connect

Abstract The Nuclear Science Advisory Committee issued in August 2009 an Isotopes Subcommittee report that recommended the construction and operation of a variable-energy, high-current, multiparticle accelerator for producing medical radioisotopes. To meet the needs identified in the report, Oak Ridge National Laboratory is developing a technical concept for a commercial 70 MeV dual-port-extraction, multiparticle cyclotron to be located at the Holifield Radioactive Ion Beam Facility. The conceptual design of the isotope production facility as envisioned would provide two types of targets for use with this new cyclotron. One is a high-power target cooled by water circulating on both sides, and the other is a commercial target cooled only on one side. The isotope facility concept includes an isotope target vault for target irradiation and a shielded transfer station for radioactive target handling. The targets are irradiated in the isotope target vault. The irradiated targets are removed from the target vault and packaged in an adjoining shielded transfer station before being sent out for postprocessing. This paper describes the conceptual design of the target-handling capabilities required for dealing with these radioactive targets and for minimizing the contamination potential during operations.

Bradley, Eric Craig [ORNL; Varma, Venugopal Koikal [ORNL; Egle, Brian [ORNL; Binder, Jeffrey L [ORNL; Mirzadeh, Saed [ORNL; Tatum, B Alan [ORNL; Burgess, Thomas W [ORNL; Devore, Joe [Oak Ridge National Laboratory (ORNL); Rennich, Mark [Oak Ridge National Laboratory (ORNL); Saltmarsh, Michael John [ORNL; Caldwell, Benjamin Cale [Oak Ridge National Laboratory (ORNL)

2011-01-01T23:59:59.000Z

430

The Minimum-Mass Extrasolar Nebula: In-Situ Formation of Close-In Super-Earths  

E-Print Network (OSTI)

Close-in super-Earths, with radii R = 2-5 R_Earth and orbital periods P < 100 days, orbit more than half, and perhaps nearly all Sun-like stars in the universe. We use this omnipresent population to construct the minimum-mass extrasolar nebula (MMEN), the circumstellar disk of solar-composition solids and gas from which such planets formed, if they formed near their current locations and did not migrate. In a series of back-of-the-envelope calculations, we demonstrate how in-situ formation in the MMEN is fast, efficient, and can reproduce many of the observed properties of close-in super-Earths, including their gas-to-rock fractions. Testable predictions are discussed.

Chiang, E

2012-01-01T23:59:59.000Z

431

A Measurement of the holographic minimum observable beam branching ratio in the Fermilab 15-foot bubble chamber  

SciTech Connect

Holography has been used successfully in combination with conventional optics for the first time in a large cryogenic bubble chamber, the 15-Foot Bubble Chamber at Fermilab, during a physics run. The innovative system combined the reference beam with the object beam, illuminating a conical volume of {approx} 1.4 m{sup 3}. Bubble tracks from neutrino interactions with a width of {approx} 120 {micro}m have been recorded with good contrast. The ratio of intensities of the object light to the reference light striking the film is called the Beam Branching Ratio. We obtained in our experiment an exceedingly small minimum-observable ratio of (0.54 {+-} 0.21) x 10{sup -7}. The technology has the potential for a wide range of applications.

Aderholz, M.; Aggarwal, M.M.; Akbari, H.; Allport, P.P.; Badyal, S.K.; Ballagh, H.C.; Barth, M.; Baton, J.P.; Bingham, H.H.; Bjelkhagen, H.; Brucker, E.B.; Burnstein, R.A.; Campbell, J.R.; Cence, R.J.; Chatterjee, T.K.; Clayton, E.F.; Corrigan, G.; Coutures, C.; DeProspo, D.; Devanand,; De Wolf, E.A.; /UC, Berkeley /Birmingham U. /Brussels U., IIHE /CERN /Punjab U. /Fermilab /Hawaii U. /Imperial Coll., London /IIT, Chicago /Jammu U. /Munich, Max Planck Inst. /Oxford U. /Rutgers U., Piscataway /Rutherford /DAPNIA, Saclay /Stevens Tech. /Tufts U.

1997-01-01T23:59:59.000Z

432

EV Everywhere Consumer/Charging Workshop: Target-Setting Framework and Consumer Behavior  

NLE Websites -- All DOE Office Websites (Extended Search)

Consumer/Charging Workshop: Consumer/Charging Workshop: Target-Setting Framework and Consumer Behavior Jacob Ward, Vehicle Technologies Senior Analyst July 30, 2012 LAX Marriot, Los Angeles, California For "EV Everywhere" Analysis, Three Scenarios 1. PHEV40 - reduces battery size while removing range issues, but involves the higher cost of two powertrains 2. AEV100 - minimizes vehicle purchase cost, but introduces range/vehicle use/infrastructure tradeoffs 3. AEV300 - helps to address range issues, but large battery leads to high vehicle cost Vehicle-level analysis provides a starting point for setting EV Everywhere technical targets for these vehicles. Levelized Cost of Driving (LCD) vehicle purchase price + fuel expenditure over 5 years, expressed per mile traveled

433

Use of Bullet Traps and Steel Targets  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

USE OF BULLET TRAPS AND USE OF BULLET TRAPS AND STEEL TARGETS U.S. DEPARTMENT OF ENERGY Office of Health, Safety and Security AVAILABLE ONLINE AT: INITIATED BY: http://www.hss.energy.gov Office of Health, Safety and Security Notices This document is intended for the exclusive use of elements of the Department of Energy (DOE), to include the National Nuclear Security Administration, their contractors, and other government agencies/individuals authorized to use DOE facilities. DOE disclaims any and all liability for personal injury or property damage due to use of this document in any context by any organization, group, or individual, other than during official government activities. Local DOE management is responsible for the proper execution of firearms-related programs for

434

Shallow magma targets in the western US  

DOE Green Energy (OSTI)

Within the next few years a hole will be drilled into a shallow magma body in the western US for the purpose of evaluating the engineering feasibility of magma energy. This paper examines potential drilling sites for these engineering feasibility experiments. Target sites high on the list are ones that currently exhibit good geophysical and geological data for shallow magma and also have reasonable operational requirements. Top ranked sites for the first magma energy well are Long Valley, CA, and Coso/Indian Wells, CA. Kilauea, HI, also in the top group, is an attractive site for some limited field experiments. A number of additional sites offer promise as eventual magma energy sites, but sparsity of geophysical data presently prevents these sites from being considered for the first magma energy well.

Hardee, H.C.

1984-10-01T23:59:59.000Z

435

Cryogenic target formation using cold gas jets  

DOE Patents (OSTI)

A method and apparatus using cold gas jets for producing a substantially uniform layer of cryogenic materials on the inner surface of hollow spherical members having one or more layers, such as inertially imploded targets are disclosed. By vaporizing and quickly refreezing cryogenic materials contained within a hollow spherical member, a uniform layer of the materials is formed on an inner surface of the spherical member. Basically the method involves directing cold gas jets onto a spherical member having one or more layers or shells and containing the cryogenic material, such as a deuterium-tritium (DT) mixture, to freeze the contained material, momentarily heating the spherical member so as to vaporize the contained material, and quickly refreezing the thus vaporized material forming a uniform layer of cryogenic material on an inner surface of the spherical member. 4 figs.

Hendricks, C.D.

1980-02-26T23:59:59.000Z

436

Tenth target fabrication specialists` meeting: Proceedings  

DOE Green Energy (OSTI)

This tenth meeting of specialists in target fabrication for inertial confinement is unique in that it is the first meeting that was completely unclassified. As a result of the new classification, we were able to invite more foreign participation. In addition to participants from the US, UK, and Canada, representatives from France, Japan, and two Russian laboratories attended, about 115 in all. This booklet presents full papers and poster sessions. Indirect and direct drive laser implosions are considered. Typical topics include: polymer or aluminium or resorcinol/formaldehyde shells, laser technology, photon tunneling microscopy as a characterization tool, foams, coatings, hohlraums, and beryllium capsules. Hydrogen, deuterium, tritium, and beryllium are all considered as fuels.

Foreman, L.R.; Stark, J.C. [comp.

1995-11-01T23:59:59.000Z

437

Myanmar production meets first-gas targets  

Science Conference Proceedings (OSTI)

Despite scheduling complications caused by annual monsoons, the Yadana project to bring offshore Myanmar gas ashore and into neighboring Thailand has met it first-gas target of July 1, 1998. The Yadana field is a dry-gas reservoir in the reef upper Birman limestone formation t 1,260 m and a pressure of 174 bara (approximately 2,500 psi). It extends nearly 7 km (west to east) and 10 km (south to north). The water-saturated reservoir gas contains mostly methane mixed with CO{sub 2} and N{sub 2}. No production of condensate is anticipated. The Yadana field contains certified gas reserves of 5.7 tcf, calculated on the basis of 2D and 3D seismic data-acquisition campaigns and of seven appraisal wells. The paper discusses early interest, development sequences, offshore platforms, the gas-export pipeline, safety, environmental steps, and schedule constraints.

Lepage, A. [Total Myanmar Exploration and Production, Singapore (Singapore)

1998-09-07T23:59:59.000Z

438

Laser-fusion targets for reactors  

DOE Patents (OSTI)

A laser target comprising a thermonuclear fuel capsule composed of a centrally located quantity of fuel surrounded by at least one or more layers or shells of material for forming an atmosphere around the capsule by a low energy laser prepulse. The fuel may be formed as a solid core or hollow shell, and, under certain applications, a pusher-layer or shell is located intermediate the fuel and the atmosphere forming material. The fuel is ignited by symmetrical implosion via energy produced by a laser, or other energy sources such as an electron beam machine or ion beam machine, whereby thermonuclear burn of the fuel capsule creates energy for applications such as generation of electricity via a laser fusion reactor.

Nuckolls, John H. (Livermore, CA); Thiessen, Albert R. (Livermore, CA)

1987-01-01T23:59:59.000Z

439

Photometric Study of Kepler Asteroseismic Targets  

E-Print Network (OSTI)

Reported are UBV and uvbybeta observations of 15 candidates for Kepler primary astero- seismic targets and 14 other stars in the Kepler field, carried out at the M.G. Fracastoro station of the Catania Astrophysical Observatory. These data serve to plot the 29 stars in two-parameter diagrams with the photometric indices (such as B-V or delta m1 and the atmospheric parameters (such as the MK type or [Fe/H]) as coordinates. The two-parameter diagrams show no evidence of interstellar reddening. The photometric indices B-V and beta are then used to derive photometric effective temperatures, Teff(B-V) and Teff(beta). For Teff(B-V) > 6400 K, the photometric effective temperatures turn out to be systematically higher than spectroscopic effective temperatures by 311 +/- 34 K and 346 +/- 91 K for Teff(B-V) and Teff(beta), respectively. For T_eff(B-V) beta, show ...

Molenda-Zakowicz, J; Frasca, A

2009-01-01T23:59:59.000Z

440

Targeting NRF2 signaling for cancer chemoprevention  

SciTech Connect

Modulation of the metabolism and disposition of carcinogens through induction of cytoprotective enzymes is one of several promising strategies to prevent cancer. Chemopreventive efficacies of inducers such as dithiolethiones and sulforaphane have been extensively studied in animals as well as in humans. The KEAP1-NRF2 system is a key, but not unilateral, molecular target for these chemopreventive agents. The transcription factor NRF2 (NF-E2-related factor 2) is a master regulator of the expression of a subset of genes, which produce proteins responsible for the detoxication of electrophiles and reactive oxygen species as well as the removal or repair of some of their damage products. It is believed that chemopreventive enzyme inducers affect the interaction between KEAP1 and NRF2 through either mediating conformational changes of the KEAP1 protein or activating phosphorylation cascades targeting the KEAP1-NRF2 complex. These events in turn affect NRF2 stability and trafficking. Recent advances elucidating the underlying structural biology of KEAP1-NRF2 signaling and identification of the gene clusters under the transcriptional control of NRF2 are facilitating understanding of the potential pleiotropic effects of NRF2 activators and discovery of novel classes of potent chemopreventive agents such as the triterpenoids. Although there is appropriately a concern regarding a deleterious role of the KEAP1-NRF2 system in cancer cell biology, especially as the pathway affects cell survival and drug resistance, the development and the use of NRF2 activators as chemopreventive agents still holds a great promise for protection of normal cells from a diversity of environmental stresses that contribute to the burden of cancer and other chronic, degenerative diseases.

Kwak, Mi-Kyoung, E-mail: mkwak@ynu.ac.k [College of Pharmacy, Yeungnam University, 214-1 Dae-dong, Gyeongsan-si, Gyeongsangbuk-do 712-749 (Korea, Republic of); Kensler, Thomas W. [Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD (United States)

2010-04-01T23:59:59.000Z

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


441

The LANSCE (Los Alamos Neutron Scattering Center) target system  

DOE Green Energy (OSTI)

During the summer of 1985, we replaced the WNR T-shaped target/moderator scheme with the LANSCE split-target/flux-trap-moderator design. The intent of this 'LANSCE upgrade' was to increase (to 12) the number of neutron beam lines serviced simultaneously, and to enhance the target area shielding and target system to accept 200 ..mu..A of 800-MeV protons. The four LANSCE moderators consist of three (chilled) water moderators, and a liquid hydrogen (20 K) moderator. The LANSCE target is machinable tungsten.

Russell, G.J.; Robinson, H.; Legate, G.L.; Woods, R.; Whitaker, E.R.; Bridge, A.; Hughes, K.J.

1986-09-22T23:59:59.000Z

442

A model for the ATW target region fluid dynamics  

SciTech Connect

In the Los Alamos National Laboratory's concept for the accelerator transmutation of waste (ATW), a lead-bismuth eutectic has been chosen as a spallation target for the proton beam. Because of the high local heat fluxes anticipated, the target is in liquid form to facilitate heat removal. The upper boundary of the target region is a hard vacuum. The primary purpose of the analysis is to determine the location of the flow boundary based on the target design parameters. This method of analysis should prove to be useful for performing preliminary scoping and design of the ATW target region's fluid dynamics. Eventually, this model should be tested against experimental data.

Rider, W.J.; Cappiello, M.W. (Los Alamos National Lab., NM (United States))

1991-01-01T23:59:59.000Z

443

The ATW target and blanket technologies and requirements  

SciTech Connect

The Los Alamos accelerator transmutation of waste (ATW) concept uses an accelerator to produce a beam of protons or deuterons that strike a spallation target. This interaction generates tens of neutrons per incident particle, resulting in an intense neutron source from the target. Material to be irradiated is located in a blanket region that surrounds the target. In this region, source neutrons are moderated to thermal energies to enhance their probability of capture and multiplied via the fission of transuranic waste. The ATW target blanket is a complex nuclear system, and performance depends strongly on the integrated performance of the target, blanket, and separations subsystems.

Davidson, J.W. (Los Alamos National Lab., NM (United States))

1993-01-01T23:59:59.000Z

444

Safety Aspects of the E158 Liquid Hydrogen Target System  

DOE Green Energy (OSTI)

The E158 experiment, currently underway at the Stanford Linear Accelerator Center (SLAC) scatters a high power 45 GeV polarized electron beam off a large liquid hydrogen target. The total volume of liquid hydrogen in the target is 55 liters, which, if detonated, could produce an explosive yield corresponding to more than 10 kg of TNT. This paper describes the requirements, design and performance of the E158 hydrogen target safety system. The methodology of the design and the safety review process is also described. The experience with the E158 target may be valuable for other sizable liquid hydrogen target systems.

Weisend, John G.

2002-07-18T23:59:59.000Z

445

An Infrastructure to Functionally Test Designs Generated by Compilers Targeting FPGAs  

E-Print Network (OSTI)

This paper presents an infrastructure to test the functionality of the specific architectures output by a high-level compiler targeting dynamically reconfigurable hardware. It results in a suitable scheme to verify the architectures generated by the compiler, each time new optimization techniques are included or changes in the compiler are performed. We believe this kind of infrastructure is important to verify, by functional simulation, further research techniques, as far as compilation to Field-Programmable Gate Array (FPGA) platforms is concerned.

Rodrigues, Rui

2011-01-01T23:59:59.000Z

446

NLC Target Heating Tech note 6-01.PDF  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 June 2001 NLC Positron Target Heating D. C. Schultz, Y. K. Batygin, V. K. Bharadwaj, J.C. Sheppard Stanford Linear Accelerator Center Stanford, CA Abstract: The NLC requires an intense beam with a large number of positrons. These positrons are produced by a high energy electron beam impinging on a solid tungsten-rhenium alloy target. The particle shower that develops in the solid target deposits significant energy in the material, leading to target stresses and potentially to target damage. The stresses can be analyzed once the magnitude and extent of the energy deposition is known. This note details the modeling of the energy deposition using EGS, performe d for the NLC and the SLC targets and for possible NLC targets made of copper or nickel instead of WRe

447

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air  

NLE Websites -- All DOE Office Websites (Extended Search)

Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners Title Techno-Economic Analysis of Indian Draft Standard Levels for Room Air Conditioners Publication Type Report LBNL Report Number LBNL-63204 Year of Publication 2007 Authors McNeil, Michael A., and Maithili Iyer Date Published 03/2007 Keywords India Air Conditioner Efficiency Standards Abstract The Indian Bureau of Energy Efficiency (BEE) finalized its first set of efficiency standards and labels for room air conditioners in July of 2006. These regulations followed soon after the publication of levels for frost-free refrigerators in the same year. As in the case of refrigerators, the air conditioner program introduces Minimum Efficiency Performance Standards (MEPS) and comparative labels simultaneously, with levels for one to five stars. Also like the refrigerator program, BEE defined several successive program phases of increasing stringency.

448

High-level waste tank farm set point document  

Science Conference Proceedings (OSTI)

Setpoints for nuclear safety-related instrumentation are required for actions determined by the design authorization basis. Minimum requirements need to be established for assuring that setpoints are established and held within specified limits. This document establishes the controlling methodology for changing setpoints of all classifications. The instrumentation under consideration involve the transfer, storage, and volume reduction of radioactive liquid waste in the F- and H-Area High-Level Radioactive Waste Tank Farms. The setpoint document will encompass the PROCESS AREA listed in the Safety Analysis Report (SAR) (DPSTSA-200-10 Sup 18) which includes the diversion box HDB-8 facility. In addition to the PROCESS AREAS listed in the SAR, Building 299-H and the Effluent Transfer Facility (ETF) are also included in the scope.

Anthony, J.A. III

1995-01-15T23:59:59.000Z

449

State-Level Benefits of Energy Efficiency  

SciTech Connect

This report describes benefits attributable to state-level energy efficiency programs. Nationwide, state-level energy efficiency programs have targeted all sectors of the economy and have employed a wide range of methods to promote energy efficiency. Standard residential and industrial programs typically identify between 20 to 30% energy savings in homes and plants, respectively. Over a 20 year period of time, an average state that aggressively pursues even a limited array of energy efficiency programs can potentially reduce total state energy use by as much as 20%. Benefit-cost ratios of effective energy efficiency programs typically exceed 3 to 1 and are much higher when non-energy and macroeconomic benefits are included. Indeed, energy efficiency and associated programs and investments can create significant numbers of new jobs and enhance state tax revenues. Several states have incorporated energy efficiency into their economic development programs. It should also be noted that increasing amounts of venture capital are being invested in the energy sector in general and in specific technologies like solar power in particular. Well-designed energy efficiency programs can be expected to help overcome numerous barriers to the market penetration of energy efficient technologies and accelerate the market penetration of the technologies.

Tonn, Bruce Edward [ORNL

2007-02-01T23:59:59.000Z

450

Low Energy Data Management for Different On-Chip Memory Levels in Multi-Context Reconfigurable Architectures  

Science Conference Proceedings (OSTI)

This paper presents a new technique to improve the efficiency of data scheduling for multi-context reconfigurable architectures targeting multimedia and DSP applications. The main goal is to improve application energy consumption. Two levels of on-chip ...

M. Sanchez-Elez; M. Fernandez; M. Anido; H. Du; N. Bagherzadeh; R. Hermida

2003-03-01T23:59:59.000Z

451

Proceedings of the workshop on polarized targets in storage rings  

Science Conference Proceedings (OSTI)

Polarization phenomena have played an increasingly important part in the study of nuclei and nucleons in recent years. Polarization studies have been hampered by the relatively few and rather fragile polarized targets which are presently available. The concept of polarized gas targets in storage rings opens a much wider range of possibilities than is available in the external target geometry. This novel method will represent a considerable advance in nuclear physics and will continue to receive much attention in plans for future facilities. An internal, polarized-target station is being planned for the cooler ring at the Indiana University Cyclotron Facility. Internal targets are compatible with recent designs of electron accelerators proposed by the Massachusetts Institute of Technology and the Southeastern Universities Research Association. The key to nuclear-science programs based on internal targets pivots on recent developments in polarized atomic beam methods, which include the more recent laser-driven polarized targets. The workshop drew together a unique group of physicists in the fields of high-energy, nuclear and atomic physics. The meeting was organized in a manner that stimulated discussion among the 58 participants and focused on developments in polarized target technology and the underlying atomic physics. An impressive array of future possibilities for polarized targets as well as current developments in polarized target technology were discussed at the workshop. Abstracts of individual items from the workshop were prepared separately for the data base.

Holt, R.J. (ed.)

1984-08-01T23:59:59.000Z

452

Construction of an unyielding target for large horizontal impacts.  

Science Conference Proceedings (OSTI)

Sandia National Laboratories has constructed an unyielding target at the end of its 2000-foot rocket sled track. This target is made up of approximately 5 million pounds of concrete, an embedded steel load spreading structure, and a steel armor plate face that varies from 10 inches thick at the center to 4 inches thick at the left and right edges. The target/track combination will allow horizontal impacts at regulatory speeds of very large objects, such as a full-scale rail cask, or high-speed impacts of smaller packages. The load-spreading mechanism in the target is based upon the proven design that has been in use for over 20 years at Sandia's aerial cable facility. That target, with a weight of 2 million pounds, has successfully withstood impact forces of up to 25 million pounds. It is expected that the new target will be capable of withstanding impact forces of more than 70 million pounds. During construction various instrumentation was placed in the target so that the response of the target during severe impacts can be monitored. This paper will discuss the construction of the target and provide insights on the testing capabilities at the sled track with this new target.

Ammerman, Douglas James; Davie, Neil Thomas; Kalan, Robert J.

2010-10-01T23:59:59.000Z

453

Owen Chamberlain, the Antiproton, and Polarized Targets  

Office of Scientific and Technical Information (OSTI)

Owen Chamberlain, the Antiproton, and Polarized Targets Resources with Additional Information · Patents Owen Chamberlain Photo Courtesy of Lawrence Berkeley National Laboratory Owen Chamberlain is "most remembered for his role in the discovery of the antiproton in 1955, ... for which he shared the 1959 Nobel Prize in physics ... . The discovery of the antiproton, the mirror image counterpart to the proton in ordinary matter, was made possible through the combination of the Bevatron accelerator ... and a unique detector, designed by Chamberlain and his colleague, Clyde Wiegand, that was set off only by particles moving at the speed predicted for antiprotons. In early 1942, at the prompting of [Ernest O.] Lawrence, Chamberlain joined the Manhattan Project, the U.S. government's secret effort to build an atomic bomb. Working as an assistant to [Emilio] Segrè, first in Berkeley, and then at the laboratory in Los Alamos, New Mexico, he investigated nuclear cross sections for intermediate-energy neutrons and the spontaneous fission of heavy elements."1

454

Automatic target recognition apparatus and method  

DOE Patents (OSTI)

An automatic target recognition apparatus (10) is provided, having a video camera/digitizer (12) for producing a digitized image signal (20) representing an image containing therein objects which objects are to be recognized if they meet predefined criteria. The digitized image signal (20) is processed within a video analysis subroutine (22) residing in a computer (14) in a plurality of parallel analysis chains such that the objects are presumed to be lighter in shading than the background in the image in three of the chains and further such that the objects are presumed to be darker than the background in the other three chains. In two of the chains the objects are defined by surface texture analysis using texture filter operations. In another two of the chains the objects are defined by background subtraction operations. In yet another two of the chains the objects are defined by edge enhancement processes. In each of the analysis chains a calculation operation independently determines an error factor relating to the probability that the objects are of the type which should be recognized, and a probability calculation operation combines the results of the analysis chains.

Baumgart, Chris W. (Santa Fe, NM); Ciarcia, Christopher A. (Los Alamos, NM)

2000-01-01T23:59:59.000Z

455

sea level | OpenEI  

Open Energy Info (EERE)

sea level sea level Dataset Summary Description This dataset, made available by the UK Department of Energy and Climate Change (DECC), shows sea level rise for the period as early as 1834 through 2008 for the following UK sites: Aberdeen, Liverpool, Newlyn, North Shields, and Sheerness. Data is from the Proudman Oceanographic Laboratory. Earliest year of available data varies by site, beginning between 1834 and 1916. Source UK Department of Energy and Climate Change (DECC) Date Released March 12th, 2010 (4 years ago) Date Updated Unknown Keywords climate change sea level UK Data application/vnd.ms-excel icon 1 Excel file: Sea level rise (UK) (xls, 280.6 KiB) Quality Metrics Level of Review Some Review Comment (Does not have "National Statistics" status)

456

" Level: National Data and Regional...  

U.S. Energy Information Administration (EIA) Indexed Site

0 Capability to Switch Coal to Alternative Energy Sources, 2006; " " Level: National Data and Regional Totals;" " Row: NAICS Codes, Value of Shipments and Employment Sizes;" "...

457

" Level: National Data and Regional...  

U.S. Energy Information Administration (EIA) Indexed Site

6 Capability to Switch Electricity to Alternative Energy Sources, 2002; " " Level: National Data and Regional Totals;" " Row: NAICS Codes, Value of Shipments and Employment Sizes;"...

458

" Level: National Data and Regional...  

U.S. Energy Information Administration (EIA) Indexed Site

0 Capability to Switch Coal to Alternative Energy Sources, 2002; " " Level: National Data and Regional Totals;" " Row: NAICS Codes, Value of Shipments and Employment Sizes;" "...

459

NIF Target Chamber Dedicated | National Nuclear Security Administration  

NLE Websites -- All DOE Office Websites (Extended Search)

NIF Target Chamber Dedicated | National Nuclear Security Administration NIF Target Chamber Dedicated | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our History > NNSA Timeline > NIF Target Chamber Dedicated NIF Target Chamber Dedicated June 11, 1999 Livermore, CA NIF Target Chamber Dedicated Secretary Richardson dedicates the National Ignition Facility target

460

Independent Oversight Targeted Review, Y-12 National Security Complex -  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Targeted Review, Y-12 National Security Targeted Review, Y-12 National Security Complex - February 2012 Independent Oversight Targeted Review, Y-12 National Security Complex - February 2012 February 2012 Targeted Review of Site Preparedness for Severe Natural Phenomena Events at the Y-12 National Security Complex This report documents the independent targeted review of the Y-12 National Security Complex (Y-12) preparedness for severe natural phenomena events, conducted by the Office of Enforcement and Oversight (Independent Oversight) within the Office of Health, Safety and Security (HSS). The review was performed by the HSS Office of Safety and Emergency Management Evaluations and was carried out as the pilot for similar reviews at other U.S. Department of Energy (DOE) sites. The purpose of the targeted review

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


461

Fuel Cell Technologies Program Record 12012: Fuel Cell Bus Targets  

NLE Websites -- All DOE Office Websites (Extended Search)

Fuel Cell Technologies Program Record Fuel Cell Technologies Program Record Record #: 12012 Date: March 2, 2012 Title: Fuel Cell Bus Targets Originator: Jacob Spendelow and Dimitrios Papageorgopoulos Approved by: Sunita Satyapal * Date: September 12, 2012 Item: Performance, cost, and durability targets for fuel cell transit buses are presented in Table 1. These market-driven targets represent technical requirements needed to compete with alternative technologies. They do not represent expectations for the status of the technology in future years. Table 1. Performance, cost, and durability targets for fuel cell transit buses. Units 2012 Status 2016 Target Ultimate Target Bus Lifetime years/miles 5/100,000 1 12/500,000 12/500,000 Power Plant Lifetime 2,3 hours 12,000 18,000 25,000

462

An effective loading method of americium targets in fast reactors  

Science Conference Proceedings (OSTI)

Recently, the development of target fuel with high americium (Am) content has been launched for the reduction of the overall fuel fabrication cost of the minor actinide (MA) recycling. In the framework of the development, this study proposes an effective loading method of Am targets in fast reactors. As a result of parametric survey calculations, we have found the ring-shaped target loading pattern between inner and outer core regions. This loading method is satisfactory both in core characteristics and in MA transmutation property. It should be noted that the Am targets can contribute to the suppression of the core power distribution change due to burnup. The major drawback of Am target is the production of helium gas. A target design modification by increasing the cladding thickness is found to be the most feasible measure to cope with the helium production. (authors)

Ohki, Shigeo; Sato, Isamu; Mizuno, Tomoyasu; Hayashi, Hideyuki; Tanaka, Kenya [Japan Atomic Energy Agency, 4002, Narita-cho, O-arai-machi, Higashi-Ibaraki-gun, Ibaraki 311-1393 (Japan)

2007-07-01T23:59:59.000Z

463

Method of making segmented pyrolytic graphite sputtering targets  

DOE Patents (OSTI)

Anisotropic pyrolytic graphite wafers are oriented and bonded together such that the graphite's high thermal conductivity planes are maximized along the back surface of the segmented pyrolytic graphite target to allow for optimum heat conduction away from the sputter target's sputtering surface and to allow for maximum energy transmission from the target's sputtering surface. 2 figures.

McKernan, M.A.; Alford, C.S.; Makowiecki, D.M.; Chen, C.W.

1994-02-08T23:59:59.000Z

464

The target laboratory of the Pelletron Accelerator's facilities  

SciTech Connect

A short report on the activities developed in the Target Laboratory, since 1970, will be presented. Basic target laboratory facilities were provided to produce the necessary nuclear targets as well as the ion beam stripper foils. Vacuum evaporation units, a roller, a press and an analytical balance were installed in the Oscar Sala building. A brief historical report will be presented in commemoration of the 40{sup th} year of the Pelletron Accelerator.

Ueta, Nobuko; Pereira Engel, Wanda Gabriel [Nuclear Physics Department - University of Sao Paulo (Brazil)

2013-05-06T23:59:59.000Z

465

Laser target fabrication, structure and method for its fabrication  

SciTech Connect

The disclosure is directed to a laser target structure and its method of fabrication. The target structure comprises a target plate containing an orifice across which a pair of crosshairs are affixed. A microsphere is affixed to the crosshairs and enclosed by at least one hollow shell comprising two hemispheres attached together and to the crosshairs so that the microsphere is juxtapositioned at the center of the shell.

Farnum, Eugene H. (Los Alamos, NM); Fries, R. Jay (Los Alamos, NM)

1985-01-01T23:59:59.000Z

466

Inertial fusion energy target injection, tracking, and beam pointing  

Science Conference Proceedings (OSTI)

Several cryogenic targets must be injected each second into a reaction chamber. Required target speed is about 100 m/s. Required accuracy of the driver beams on target is a few hundred micrometers. Fuel strength is calculated to allow acceleration in excess of 10,000 m/s{sup 2} if the fuel temperature is less than 17 K. A 0.1 {mu}m thick dual membrane will allow nearly 2,000 m/s{sup 2} acceleration. Acceleration is gradually increased and decreased over a few membrane oscillation periods (a few ms), to avoid added stress from vibrations which could otherwise cause a factor of two decrease in allowed acceleration. Movable shielding allows multiple targets to be in flight toward the reaction chamber at once while minimizing neutron heating of subsequent targets. The use of multiple injectors is recommended for redundancy which increases availability and allows a higher pulse rate. Gas gun, rail gun, induction accelerator, and electrostatic accelerator target injection devices are studied, and compared. A gas gun is the preferred device for indirect-drive targets due to its simplicity and proven reliability. With the gas gun, the amount of gas required for each target (about 10 to 100 mg) is acceptable. A revolver loading mechanism is recommended with a cam operated poppet valve to control the gas flow. Cutting vents near the muzzle of the gas gun barrel is recommended to improve accuracy and aid gas pumping. If a railgun is used, we recommend an externally applied magnetic field to reduce required current by an order of magnitude. Optical target tracking is recommended. Up/down counters are suggested to predict target arrival time. Target steering is shown to be feasible and would avoid the need to actively point the beams. Calculations show that induced tumble from electrostatically steering the target is not excessive.

Petzoldt, R.W.

1995-03-07T23:59:59.000Z

467

Negative ion rich plasmas in continuous and pulsed wave modes in a minimum-B magnetic field  

Science Conference Proceedings (OSTI)

Generation of hydrogen negative ion rich plasmas is investigated in continuous wave (CW) and pulse modulated (PM) wave modes of 2.45 GHz in a minimum-B magnetic field. The waves are launched directly into the plasma device and utilize wave particle resonances for high density plasma generation. In CW operation, the chamber is divided into two sections, namely, the source and downstream region, separated by a transverse magnetic field that allows only cold electrons ({approx}1 eV) into the downstream region helpful for the generation of negative ions. The H{sup -} density is measured by the second derivative beat method and is compared with the values obtained from a steady state model and the extracted current density. In the pulsed mode, temporal filtering generates negative ion rich plasmas in the afterglow phase. The H{sup -} density in the afterglow is estimated using saturation current ratio method and the results are compared with a time dependent model using particle balance equations. The essential idea in both the filtering techniques is to assist generation of negative ions and prevent its destruction by hot electrons.

Sahu, Debaprasad; Pandey, Shail; Aneja, Jyoti; Bhattacharjee, Sudeep [Department of Physics, Indian Institute of Technology, Kanpur 208016 (India)

2012-12-15T23:59:59.000Z

468

Changes in quasi-periodic variations of solar photospheric fields: precursor to the deep solar minimum in the cycle 23?  

E-Print Network (OSTI)

Using both wavelet and Fourier analysis, a study has been undertaken of the changes in the quasi-periodic variations in solar photospheric fields in the build-up to one of the deepest solar minima experienced in the past 100 years. This unusual and deep solar minimum occurred between solar cycles 23 and 24. The study, carried out using ground based synoptic magnetograms spanning the period 1975.14 to 2009.86, covered solar cycles 21, 22 and 23. A hemispheric asymmetry in periodicities of the photospheric fields was seen only at latitudes above $\\pm45{^{\\circ}}$ when the data was divided, based on a wavelet analysis, into two parts: one prior to 1996 and the other after 1996. Furthermore, the hemispheric asymmetry was observed to be confined to the latitude range 45${^{\\circ}}$ to 60${^{\\circ}}$. This can be attributed to the variations in polar surges that primarily depend on both the emergence of surface magnetic flux and varying solar surface flows. The observed asymmetry when coupled with the fact that bot...

Bisoi, Susanta Kumar; Chakrabarty, D; Ananthakrishnan, S; Divekar, Ankur

2013-01-01T23:59:59.000Z

469

Using a Family of Dividing Surfaces Normal to the Minimum EnergyPath for Quantum Instanton Rate Constants  

SciTech Connect

One of the outstanding issues in the quantum instanton (QI) theory (or any transition state-type theory) for thermal rate constants of chemical reactions is the choice of an appropriate ''dividing surface'' (DS) that separates reactants and products. (In the general version of the QI theory, there are actually two dividing surfaces involved.) This paper shows one simple and general way for choosing DS's for use in QI Theory, namely using the family of (hyper) planes normal to the minimum energy path (MEP) on the potential energy surface at various distances s along it. Here the reaction coordinate is not one of the dynamical coordinates of the system (which will in general be the Cartesian coordinates of the atoms), but rather simply a parameter which specifies the DS. It is also shown how this idea can be implemented for an N-atom system in 3d space in a way that preserves overall translational and rotational invariance. Numerical application to a simple system (the colliner H + H{sub 2} reaction) is presented to illustrate the procedure.

Li, Yimin; Miller, Wlliam H.

2006-02-22T23:59:59.000Z

470

Regional performance targets for transparent near-infrared switching...  

NLE Websites -- All DOE Office Websites (Extended Search)

glazings, NIR-switching, Performance targets, Solar heat gain Abstract With building heating and cooling accounting for nearly 14% of the national energy consumption, emerging...

471

Effectiveness of Shallow Temperatures Surveys to Target a Geothermal...  

Open Energy Info (EERE)

Energy, 2010 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Effectiveness of Shallow Temperatures Surveys to Target a Geothermal...

472

Cyclotrons to Make Neutrons & Radioactive Targets for SBSS at...  

Office of Science (SC) Website

to Make Neutrons & Radioactive Targets for SBSS at LBNL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications...

473

EV Everywhere Battery Workshop: Preliminary Target-Setting Framework  

NLE Websites -- All DOE Office Websites (Extended Search)

Battery Workshop: Preliminary Target-Setting Framework Jacob Ward, Vehicle Technologies Senior Analyst July 26, 2012 Doubletree-Rosemont, Chicago, IL For this Analysis, Three "EV "...

474

Available Technologies: ANXA9: A Therapeutic Target and ...  

Biofuels; Biotechnology & Medicine. Diagnostics and Therapeutics; ... ANXA9: A Therapeutic Target and Predictive Marker for Early Detection of Aggressive Breast Cancer.

475

Non-Transgenic Cell Lines for Identifying Target Premalignant ...  

Biofuels; Biotechnology & Medicine. ... Non-Transgenic Cell Lines for Identifying Target Premalignant Genes IB-2023 : Berkeley Lab's S3 cell lines display partial

476

Available Technologies: Non-catalytic Domain Targets in MMPs ...  

Biofuels; Biotechnology & Medicine. Diagnostics and Therapeutics; Medical Devices; ... might be the correct target for drugs that would block tumor growth or metastases.

477

Target Fabrication Industry Day - September 11, 2013 | National...  

National Nuclear Security Administration (NNSA)

Home > About Us > Our Programs > Defense Programs > Office of Research, Development, Test Capabilities and Evaluation > Office of Inertial Confinement Fusion > Target...

478

Ion Beam Sputter Target and Method of Manufacture  

Disclosure Number 201002398 Technology Summary The invention relates to a sputtering target for carrying out a Physical Vapor Deposition (PVD) coating ...

479

Polarized target with dilution refrigerator: why and how  

DOE Green Energy (OSTI)

Polarized targets using dilution refrigerators have several advantages over targets of He/sup 3/ cryostats for some polarization experiments. One of the advantages is in the long nuclear spin lattice relaxation time in quite low temperatures. It permits holding the target polarization in a magnetic field different from the polarizing field. Another merit is in the fact that one can obtain higher polarization in a dilution refrigerator than in a He/sup 3/ cryostat, especially in the case of deuterons. These facts suggest various applications of the target with a dilution refrigerator, such as a spin-frozen target for spin-rotation parameter measurements, a target for spin effects in inelastic scattering, high polarized deuteron target, and so on. Furthermore, one can hopefully make a highly polarized HD target with further improvements of the dilution refrigerator. The possibility of the solid hydrogen polarization is also discussed. Finally, the principle of the dilution refrigerator and the special features of the refrigerator for the polarized target are briefly described. 7 figures.

Masaike, A.

1977-09-01T23:59:59.000Z

480

Protein engineering for targeted delivery of radionuclides to tumors  

E-Print Network (OSTI)

Traditional cancer treatment strategies include systemic chem