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1

Electrical Techniques | Open Energy Information  

Open Energy Info (EERE)

Electrical Techniques Electrical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electrical Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png Electrical Techniques: Electrical techniques aim to image the electrical resistivity of the

2

Category:Electrical Techniques | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Electrical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electrical Techniques page? For detailed information on Electrical Techniques as exploration techniques, click here. Category:Electrical Techniques Add.png Add a new Electrical Techniques Technique Subcategories This category has the following 2 subcategories, out of 2 total. D [+] Direct-Current Resistivity Survey‎ (2 categories) 3 pages E [+] Electromagnetic Techniques‎ (1 categories) 2 pages Pages in category "Electrical Techniques"

3

Fiber optic diagnostic techniques for the electrical discharge machining process.  

E-Print Network (OSTI)

??Plasma sparks from an electrical discharge machining phics. (EDM) process were observed using fiber optics positioned the dielectric oil. New measurement techniques were developed to (more)

Pillans, Brandon William

2012-01-01T23:59:59.000Z

4

Fiber optic diagnostic techniques for the electrical discharge machining process  

E-Print Network (OSTI)

FIBER OPTIC DIAGNOSTIC TECHNIQUES FOR THE ELECTRICAL DISCHARGE MACHINING PROCESS A Thesis by BRANDON WILLIAM PILLANS Submitted to the Office of Graduate Studies of Texas AB M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August t 998 Major Subject: Electrical Engineering FIBER OPTIC DIAGNOSTIC TECHNIQUES FOR THE ELECTRICAL DISCHARGE MACHINING PROCESS A Thesis by BRANDON WILLIAM PILLANS Submitted to Texas A8M University in partial...

Pillans, Brandon William

2012-06-07T23:59:59.000Z

5

A Novel Visualization Technique for Electric Power Grid Analytics  

SciTech Connect

The application of information visualization holds tremendous promise for the electric power industry, and yet its potential has not been sufficiently exploited by the visualization community. Prior work on visualizing electric power systems has been limited to depicting raw or processed information on top of a geographic layout. Little effort has been devoted to maximize the analytical strengths naturally gained by the visualization itself. This paper introduces a visualization system prototype, known as GreenGrid, that explores the planning and monitoring of the North American Electricity Infrastructure. For the purposes of visualization, the power infrastructure can be described as a network of nodes and links. The nodes represent the electrical buses where generators and loads are connected, while the links represent the transmission lines that interconnect the buses. This paper focuses mainly on a customized technique within GreenGrid that is designed to visually identify abnormal characteristics of the electricity infrastructure. In particular, we examine an extreme event that occurred within the Western United States power grid on August 10, 1996. We compare our study results with the conclusion of the post-disturbance analysis and find that many of the disturbance characteristics can be readily identified with the proper form of visualization. The paper includes a lessons learned discussion to evaluate the visualization application.

Wong, Pak C.; Schneider, Kevin P.; Mackey, Patrick S.; Foote, Harlan P.; Chin, George; Guttromson, Ross T.; Thomas, James J.

2009-05-01T23:59:59.000Z

6

EDFA Gain Flattening Using Long-Period Fibre Gratings Based on the Electric Arc Technique  

E-Print Network (OSTI)

of new stresses during the electric arc discharges as the main mechanism for their formation [5]. #12EDFA Gain Flattening Using Long-Period Fibre Gratings Based on the Electric Arc Technique O. Frazão of the long-period fibre grating is based on the electric arc technique. 1. Introduction. The gain flattening

Haddadi, Hamed

7

Application of unusual techniques for characterizing ageing on polymeric electrical insulation  

Science Journals Connector (OSTI)

Abstract The degradation process caused by electrical stresses and weather conditions on electrical non-ceramic insulation was analyzed with non-destructive techniques. Traditional replica technique was introduced as a novel method to characterize microstructure changes on polymeric insulation. Static contact angle and roughness measurements were also used to characterize non-ceramic insulation. These non-conventional techniques have shown to be appropriate for evaluating aging on electrical insulation surfaces of bushings and surge arresters installed in electrical substations. The replica technique has drawn attention for being an innovative analysis test for characterizing polymeric insulation.

R. Saldivar-Guerrero; R. Hernndez-Corona; F.A. Lopez-Gonzalez; L. Rejn-Garca; V. Romero-Baizabal

2014-01-01T23:59:59.000Z

8

MAGNETIC RESONANCE ELECTRICAL IMPEDANCE TOMOGRAPHY (MR-EIT): A new technique for high resolution conductivity imaging  

E-Print Network (OSTI)

MAGNETIC RESONANCE ELECTRICAL IMPEDANCE TOMOGRAPHY (MR-EIT): A new technique for high resolution potentials and the magnetic fields produced by the probing current are measured. Surface potentials are measured by using conventional electrical impedance tomography techniques and high resolution magnetic

Eyüboðlu, Murat

9

Electric Arc Locator in Photovoltaic Power Systems Using Advanced Signal Processing Techniques  

E-Print Network (OSTI)

in detecting the partial discharges associated with the production of an electric arc in a high voltage power in fault detection and localization. In [1] we have shown that electric arc (or partial dischargeElectric Arc Locator in Photovoltaic Power Systems Using Advanced Signal Processing Techniques

Paris-Sud XI, Université de

10

Simulation of an Electrical Substation Using the Bond Graph Technique  

Science Journals Connector (OSTI)

Simulation and especially computer simulation, is a basic tool since it enables engineers to understand how systems work without actually needing to see them. They can learn how they work in different circumstances and optimize their design with considerably ... Keywords: simulation, electrical substations, elements, electricity, bond graph

Gregorio Romero; Jesus Felez; Joaquin Maroto; Jose Manuel Mera

2008-04-01T23:59:59.000Z

11

Dismantling techniques  

SciTech Connect

Most of the dismantling techniques used in a Decontamination and Dismantlement (D and D) project are taken from conventional demolition practices. Some modifications to the techniques are made to limit exposure to the workers or to lessen the spread of contamination to the work area. When working on a D and D project, it is best to keep the dismantling techniques and tools as simple as possible. The workers will be more efficient and safer using techniques that are familiar to them. Prior experience with the technique or use of mock-ups is the best way to keep workers safe and to keep the project on schedule.

Wiese, E.

1998-03-13T23:59:59.000Z

12

A simple, reliable technique for making electrical contact to multiwalled carbon nanotubes  

E-Print Network (OSTI)

A simple, reliable technique for making electrical contact to multiwalled carbon nanotubes P. J. de nanotubes is described. With these contacts, current in the mA range can be routinely passed through individual multiwalled nanotubes without adverse consequences, thus allowing their resistance to be measured

13

Geophysical Techniques | Open Energy Information  

Open Energy Info (EERE)

Geophysical Techniques Geophysical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Geophysical Techniques Details Activities (2) Areas (1) Regions (0) NEPA(4) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: may be inferred Stratigraphic/Structural: may be inferred Hydrological: may be inferred Thermal: may be inferred Dictionary.png Geophysical Techniques: Geophysics is the study of the structure and composition of the earth's interior. Other definitions:Wikipedia Reegle Introduction Geophysical techniques measure physical phenomena of the earth such as gravity, magnetism, elastic waves, electrical and electromagnetic waves.

14

Magnetotelluric Techniques | Open Energy Information  

Open Energy Info (EERE)

Magnetotelluric Techniques Magnetotelluric Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Magnetotelluric Techniques Details Activities (0) Areas (0) Regions (0) NEPA(2) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Sounding Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png Magnetotelluric Techniques:

15

Proceedings of the 2008 International Conference on Electrical Machines Paper ID 1436 Comparative Analysis of Estimation Techniques  

E-Print Network (OSTI)

is a prevailing design of electric drive for EVs. Drives Efficiency is crucial to saving energy and offering moreProceedings of the 2008 International Conference on Electrical Machines Paper ID 1436 Comparative Analysis of Estimation Techniques of SFOC Induction Motor for Electric Vehicles A. Haddoun1,2 , M

Paris-Sud XI, Université de

16

Technique for anisotropic extension of organic crystals: Application to temperature dependence of electrical resistance  

Science Journals Connector (OSTI)

We have developed a technique for the anisotropic extension of fragile molecular crystals. The pressure medium and the instrument which extends the pressure medium are both made from epoxy resin. Since the thermal contraction of our instrument is identical to that of the pressure medium the strain applied to the pressure medium has no temperature dependence down to 2 K . Therefore the degree of extension applied to the single crystal at low temperatures is uniquely determined from the degree of extension in the pressure medium and thermal contractions of the epoxy resin and the single crystal at ambient pressure. Using this novel instrument we have measured the temperature dependence of the electrical resistance of metallic superconducting and insulating materials. The experimental results are discussed from the viewpoint of the extension (compression) of the lattice constants along the parallel (perpendicular) direction.

Takashi Yamamoto; Reizo Kato; Hiroshi M. Yamamoto; Atsuko Fukaya; Kenji Yamasawa; Ichiro Takahashi; Hiroki Akutsu; Akane Akutsu-Sato; Peter Day

2007-01-01T23:59:59.000Z

17

Evaluation of Four Imaging Techniques for the Electrical Characterization of Solar Cells (Presentation)  

SciTech Connect

The imaging techniques enable the possibility of higher-level quality control and defect analysis of solar cell materials in in-line production processes.

Johnston. S.; Berman, G.; Call, N.; Ahrenkiel, R.

2008-12-03T23:59:59.000Z

18

Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(5) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electrical Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

19

Handbook on research techniques  

Science Journals Connector (OSTI)

Handbook on research techniques ... A request for contributions to a handbook entitled "Handbook of Research Techniques" for gifted children. ...

William Marina

1972-01-01T23:59:59.000Z

20

Reliability evaluation for electrical collector systems of wind farm using the section enumeration technique  

Science Journals Connector (OSTI)

Topology has a significant effect on the reliability performance of an electrical collector system (ECS) of wind farms. Novel indices for the reliability of wind farm ECS are presented based on topological features of wind farm ECS in this paper. The concept of the section for a wind farm ECS is defined. The probability table of multistate capacity (PTMC) for a wind turbine generator (WTG) and the Probability Table of the Number of WTG in Up-state (PTNU) for a section can be created. Based on the PTMC and PTNU PTMC of a wind farm can be established using the state enumeration algorithm and the matrix operations. Therefore the reliability evaluation model considering effects of wind speed and component failures can be built. The proposed model not only considers the multi-failures of ECS components including failures of cable feeder WTG and wind turbine transformer (WTT) but also states of switching devices in failure disconnection and switching processes. Four wind farm ECS topologies i.e. radial topology single-sided ring topology double-sided ring topology and star topology are implemented. Case studies on the reliability evaluation of wind farm ECS are used to verify the feasibility and validity of the proposed technique.

Kaigui Xie; Hejun Yang; Bo Hu; David Yu

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Control Of Electric Motor Parameters On The Basis Of Qr- Decomposition Technique  

Science Journals Connector (OSTI)

Control of DC motor on the basis of QR-decomposition technique is given in this paper. Authors propose to control DC motor parameter using step-by-step method of rotor s parameters definition. The first step ...

First A. Viktor Melnikov

2008-01-01T23:59:59.000Z

22

Electrical test structures and measurement techniques for the characterisation of advanced photomasks  

E-Print Network (OSTI)

Existing photomask metrology is struggling to keep pace with the rapid reduction of IC dimensions as traditional measurement techniques are being stretched to their limits. This thesis examines the use of on-mask probable ...

Tsiamis, Andreas

2010-01-01T23:59:59.000Z

23

ELECTRICITY CONSUMPTION IN THE INDUSTRIAL SECTOR OF JORDAN: APPLICATION OF MULTIVARIATE LINEAR REGRESSION AND ADAPTIVE NEURO?FUZZY TECHNIQUES  

Science Journals Connector (OSTI)

In this study two techniques for modeling electricity consumption of the Jordanian industrial sector are presented: (i) multivariate linear regression and (ii) neuro?fuzzy models. Electricity consumption is modeled as function of different variables such as number of establishments number of employees electricity tariff prevailing fuel prices production outputs capacity utilizations and structural effects. It was found that industrial production and capacity utilization are the most important variables that have significant effect on future electrical power demand. The results showed that both the multivariate linear regression and neuro?fuzzy models are generally comparable and can be used adequately to simulate industrial electricity consumption. However comparison that is based on the square root average squared error of data suggests that the neuro?fuzzy model performs slightly better for future prediction of electricity consumption than the multivariate linear regression model. Such results are in full agreement with similar work using different methods for other countries.

M. Samhouri; A. Al?Ghandoor; R. H. Fouad

2009-01-01T23:59:59.000Z

24

September 2006 FORENSIC TECHNIQUES  

E-Print Network (OSTI)

September 2006 FORENSIC TECHNIQUES: HELPING ORGANIZATIONS IMPROVE THEIR RESPONSES TO INFORMATION SECURITY INCIDENTS FORENSIC TECHNIQUES: HELPING ORGANIZATIONS IMPROVE THEIR RESPONSES TO INFORMATION and Technology National Institute of Standards and Technology Digital forensic techniques involve the application

25

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques (Redirected from Ground Electromagnetic Methods) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Ground Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

26

Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Sounding Techniques Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

27

Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques (Redirected from Electromagnetic Sounding Methods) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Sounding Techniques Details Activities (1) Areas (1) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water

28

Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Profiling Techniques Electromagnetic Profiling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Electromagnetic Profiling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Ground Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature

29

Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Ground Electromagnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Electrical Techniques Parent Exploration Technique: Electromagnetic Techniques Information Provided by Technique Lithology: Rock composition, mineral and clay content Stratigraphic/Structural: Detection of permeable pathways, fracture zones, faults Hydrological: Resistivity influenced by porosity, grain size distribution, permeability, fluid saturation, fluid type and phase state of the pore water Thermal: Resistivity influenced by temperature Dictionary.png

30

Assessor Training Assessment Techniques  

E-Print Network (OSTI)

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

31

Comparative Analysis of Control Techniques for Efficiency Improvement in Electric Vehicles  

E-Print Network (OSTI)

-SVM scheme is the best candidate. Keywords--Electric vehicle, induction motor, efficiency, field oriented. In fact, the motor drive, comprising of the electric motor, power converter, and electronic controller by the driver. Many researches [2-3] have demonstrated the induction motor is one of the right electric motor

32

Computational Intelligence Techniques for a Smart Electric Grid of the Future  

Science Journals Connector (OSTI)

The electric grid of the future is required to become smarter so as to provide an affordable, reliable, and sustainable supply of electricity. Under such circumstances, considerable research activities have been carried out in the U.S. and Europe to ... Keywords: Adaptive and Self-Healing Systems, Communications, Computational Intelligence, Information Infrastructure, Learning, Smart Electric Grid

Zhenhua Jiang

2009-05-01T23:59:59.000Z

33

Category:Geophysical Techniques | Open Energy Information  

Open Energy Info (EERE)

Techniques Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Geophysical Techniques page? For detailed information on Geophysical Techniques as exploration techniques, click here. Category:Geophysical Techniques Add.png Add a new Geophysical Techniques Technique Subcategories This category has the following 4 subcategories, out of 4 total. E [+] Electrical Techniques‎ (2 categories) 5 pages G [×] Gravity Techniques‎ 3 pages M [×] Magnetic Techniques‎ 3 pages S [+] Seismic Techniques‎ (2 categories) 2 pages Pages in category "Geophysical Techniques" The following 5 pages are in this category, out of 5 total. D DC Resistivity Survey (Mise-Á-La-Masse) E Electrical Techniques G Gravity Techniques M Magnetic Techniques

34

A novel technique that creates electricity using the sun and generation technology  

E-Print Network (OSTI)

solar heat to produce electricity in devices called thermionic energy converters (TECs) for which dust in space-based energy conversion Lithiated nanoparticle diamond energy converter University

Bristol, University of

35

Investigation of structural and electrical properties of flat a-Si/c-Si heterostructure fabricated by EBPVD technique  

SciTech Connect

Flat amorphous silicon - crystal silicon (a-Si/c-Si) heterostructure were prepared by ultra-high vacuum electron beam evaporation technique on p-Si (111) and n-Si (100) single crystal substrates. Structural analyses were investigated by XRD, Raman and FEG-SEM analysis. With these analyses we determined that at the least amorphous structure shows modification but amorphous structure just protected. The electrical and photovoltaic properties of flat a-Si/c-Si heterojunction devices were investigated with current-voltage characteristics under dark and illumination conditions. Electrical properties of flat a-Si/c-Si heterorojunction; such as barrier height ?{sub B}, diode ideality factor ? were determined from current-voltage characteristics in dark conditions. These a-Si/c-Si heterostructure have good rectification behavior as a diode and exhibit high photovoltaic sensitivity.

Demiro?lu, D. [Department of Metallurgical and Materials Engineering, Istanbul Technical University, Ayaza?a 34469, Istanbul (Turkey); Tatar, B. [Faculty of Arts and Sciences, Department of Physics, Nam?k Kemal University, De?irmenalt?, Tekirda? (Turkey); Kazmanli, K.; Urgen, M. [Department of Metallurgical and Materials Engineering, Istanbul Technical University, Ayaza?a 34469, Istanbul (Turkey)

2013-12-16T23:59:59.000Z

36

ASSESSMENT OF ELECTRICITY DEMAND IN IRAN'S INDUSTRIAL SECTOR USING DIFFERENT INTELLIGENT OPTIMIZATION TECHNIQUES  

Science Journals Connector (OSTI)

This study presents application of particle swarm optimization (PSO) and genetic algorithm (GA) methods to estimate electricity demand in Iran's industrial sectors, based on economic indicators. The economic indicators used in this study are number of ...

M. A. Behrang; E. Assareh; M. R. Assari; A. Ghanbarzadeh

2011-04-01T23:59:59.000Z

37

Calculation methods and detection techniques for electric and magnetic fields from power lines with measurement verification  

E-Print Network (OSTI)

An accurate determination and characterization of electric and magnetic fields produced by power lines is a complex task. Different models must be used for far fields and for near fields. This study is centered on computation and measurement aspects...

Mamishev, Alexander V

2012-06-07T23:59:59.000Z

38

Long term infrastructure investments under uncertainty in the electric power sector using approximate dynamic programming techniques  

E-Print Network (OSTI)

A computer model was developed to find optimal long-term investment strategies for the electric power sector under uncertainty with respect to future regulatory regimes and market conditions. The model is based on a ...

Seelhof, Michael

2014-01-01T23:59:59.000Z

39

Applied Science/Techniques  

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

Applied Science/Techniques Applied Science/Techniques Applied Science/Techniques Print The ALS is an excellent incubator of new scientific techniques and instrumentation. Many of the technical advances that make the ALS a world-class soft x-ray facility are developed at the ALS itself. The optical components in use at the ALS-mirrors and lenses optimized for x-ray wavelengths-require incredibly high-precision surfaces and patterns (often formed through extreme ultraviolet lithography at the ALS) and must undergo rigorous calibration and testing provided by beamlines and equipment from the ALS's Optical Metrology Lab and Berkeley Lab's Center for X-Ray Optics. New and/or continuously improved experimental techniques are also a crucial element of a thriving scientific facility. At the ALS, examples of such "technique" highlights include developments in lensless imaging, soft x-ray tomography, high-throughput protein analysis, and high-power coherent terahertz radiation.

40

Data Techniques | Open Energy Information  

Open Energy Info (EERE)

Techniques Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Data Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Data and Modeling Techniques Exploration Sub Group: Data Techniques Parent Exploration Technique: Data and Modeling Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Data Techniques: The collection, processing, and interpretation of data from various methods so accurate interpretations can be made about the subject matter. Other definitions:Wikipedia Reegle Introduction Data techniques are any technique where data is collected and organized in a manner so that the information is useful for geothermal purposes. The

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Methods for detecting and locating leaks in containment facilities using electrical potential data and electrical resistance tomographic imaging techniques  

DOE Patents (OSTI)

Methods are provided for detecting and locating leaks in liners used as barriers in the construction of landfills, surface impoundments, water reservoirs, tanks, and the like. Electrodes are placed in the ground around the periphery of the facility, in the leak detection zone located between two liners if present, and/or within the containment facility. Electrical resistivity data is collected using these electrodes. This data is used to map the electrical resistivity distribution beneath the containment liner between two liners in a double-lined facility. In an alternative embodiment, an electrode placed within the lined facility is driven to an electrical potential with respect to another electrode placed at a distance from the lined facility (mise-a-la-masse). Voltage differences are then measured between various combinations of additional electrodes placed in the soil on the periphery of the facility, the leak detection zone, or within the facility. A leak of liquid though the liner material will result in an electrical potential distribution that can be measured at the electrodes. The leak position is located by determining the coordinates of an electrical current source pole that best fits the measured potentials with the constraints of the known or assumed resistivity distribution. 6 figs.

Daily, W.D.; Laine, D.L.; Laine, E.F.

1997-08-26T23:59:59.000Z

42

Methods for detecting and locating leaks in containment facilities using electrical potential data and electrical resistance tomographic imaging techniques  

DOE Patents (OSTI)

Methods are provided for detecting and locating leaks in liners used as barriers in the construction of landfills, surface impoundments, water reservoirs, tanks, and the like. Electrodes are placed in the ground around the periphery of the facility, in the leak detection zone located between two liners if present, and/or within the containment facility. Electrical resistivity data is collected using these electrodes. This data is used to map the electrical resistivity distribution beneath the containment liner between two liners in a double-lined facility. In an alternative embodiment, an electrode placed within the lined facility is driven to an electrical potential with respect to another electrode placed at a distance from the lined facility (mise-a-la-masse). Voltage differences are then measured between various combinations of additional electrodes placed in the soil on the periphery of the facility, the leak detection zone, or within the facility. A leak of liquid though the liner material will result in an electrical potential distribution that can be measured at the electrodes. The leak position is located by determining the coordinates of an electrical current source pole that best fits the measured potentials with the constraints of the known or assumed resistivity distribution.

Daily, William D. (Livermore, CA); Laine, Daren L. (San Antonio, TX); Laine, Edwin F. (Alamo, CA)

1997-01-01T23:59:59.000Z

43

Methods for detecting and locating leaks in containment facilities using electrical potential data and electrical resistance tomographic imaging techniques  

DOE Patents (OSTI)

Methods are provided for detecting and locating leaks in liners used as barriers in the construction of landfills, surface impoundments, water reservoirs, tanks, and the like. Electrodes are placed in the ground around the periphery of the facility, in the leak detection zone located between two liners if present, and/or within the containment facility. Electrical resistivity data is collected using these electrodes. This data is used to map the electrical resistivity distribution beneath the containment liner or between two liners in a double-lined facility. In an alternative embodiment, an electrode placed within the lined facility is driven to an electrical potential with respect to another electrode placed at a distance from the lined facility (mise-a-la-masse). Voltage differences are then measured between various combinations of additional electrodes placed in the soil on the periphery of the facility, the leak detection zone, or within the facility. A leak of liquid through the liner material will result in an electrical potential distribution that can be measured at the electrodes. The leak position is located by determining the coordinates of an electrical current source pole that best fits the measured potentials with the constraints of the known or assumed resistivity distribution.

Daily, William D. (Livermore, CA); Laine, Daren L. (San Anotonio, TX); Laine, Edwin F. (Penn Valley, CA)

2001-01-01T23:59:59.000Z

44

Offshore hydraulic fracturing technique  

SciTech Connect

This paper describes the frac-and-pack completion technique currently being used in the Gulf of Mexico, and elsewhere, for stimulation and sand control. The paper describes process applications and concerns that arise during implementation of the technique and discusses the completion procedure, treatment design, and execution.

Meese, C.A. (Marathon Oil Co., Houston, TX (United States)); Mullen, M.E. (Marathon Oil Co., Lafayette, LA (United States)); Barree, R.D. (Marathon Oil Co., Littleton, CO (United States))

1994-03-01T23:59:59.000Z

45

Analog signal isolation techniques  

SciTech Connect

This paper discusses several techniques for isolating analog signals in an accelerator environment. The techniques presented here encompass isolation amplifiers, voltage-to-frequency converters (VIFCs), transformers, optocouplers, discrete fiber optics, and commercial fiber optic links. Included within the presentation of each method are the design issues that must be considered when selecting the isolation method for a specific application.

Beadle, E.R.

1992-01-01T23:59:59.000Z

46

Analog signal isolation techniques  

SciTech Connect

This paper discusses several techniques for isolating analog signals in an accelerator environment. The techniques presented here encompass isolation amplifiers, voltage-to-frequency converters (VIFCs), transformers, optocouplers, discrete fiber optics, and commercial fiber optic links. Included within the presentation of each method are the design issues that must be considered when selecting the isolation method for a specific application.

Beadle, E.R.

1992-12-31T23:59:59.000Z

47

Applied Science/Techniques  

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

Applied Science/Techniques Print Applied Science/Techniques Print The ALS is an excellent incubator of new scientific techniques and instrumentation. Many of the technical advances that make the ALS a world-class soft x-ray facility are developed at the ALS itself. The optical components in use at the ALS-mirrors and lenses optimized for x-ray wavelengths-require incredibly high-precision surfaces and patterns (often formed through extreme ultraviolet lithography at the ALS) and must undergo rigorous calibration and testing provided by beamlines and equipment from the ALS's Optical Metrology Lab and Berkeley Lab's Center for X-Ray Optics. New and/or continuously improved experimental techniques are also a crucial element of a thriving scientific facility. At the ALS, examples of such "technique" highlights include developments in lensless imaging, soft x-ray tomography, high-throughput protein analysis, and high-power coherent terahertz radiation.

48

Geochemical Techniques | Open Energy Information  

Open Energy Info (EERE)

Geochemical Techniques Geochemical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Geochemical Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geochemical Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Geochemical Techniques: No definition has been provided for this term. Add a Definition Related Techniques Geochemical Techniques Geochemical Data Analysis Geothermometry Gas Geothermometry Isotope Geothermometry Liquid Geothermometry Cation Geothermometers Multicomponent Geothermometers Silica Geothermometers Thermal Ion Dispersion

49

Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

Downhole Techniques Downhole Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Downhole Techniques Details Activities (0) Areas (0) Regions (0) NEPA(7) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Determination of lithology, grain size Stratigraphic/Structural: Thickness and geometry of rock strata, fracture identification Hydrological: Porosity, permeability, water saturation Thermal: Formation temperature with depth Dictionary.png Downhole Techniques: Downhole techniques are measurements collected from a borehole environment which provide information regarding the character of formations and fluids

50

Child Guidance Techniques.  

E-Print Network (OSTI)

TDOC Z TA24S.7 8873 NO.1314 Child Guidance Techniques The Texas MM University System ~ Texas Agricultural Extension Service DMia! C. Pfannstiel . Director College Station B-1314 ... 2 Contents Helpful Guidance T echniques...

Fraiser, Roberta C.

1982-01-01T23:59:59.000Z

51

Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Seismic Techniques Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(10) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

52

Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

Modeling Techniques Modeling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Modeling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Data and Modeling Techniques Exploration Sub Group: Modeling Techniques Parent Exploration Technique: Data and Modeling Techniques Information Provided by Technique Lithology: Rock types, rock chemistry, stratigraphic layer organization Stratigraphic/Structural: Stress fields and magnitudes, location and shape of permeable and non-permeable structures, faults, fracture patterns Hydrological: Visualization and prediction of the flow patterns and characteristics of geothermal fluids, hydrothermal fluid flow characteristics, up-flow patterns

53

Infrared Inspection Techniques  

E-Print Network (OSTI)

. By means of a TV monitor tube, a thermal picture is formed where lighter parts represent areas with higher temperatures. Absolute temperature levels of objects can be measured with this technique from -300C to +20000C. A conventional camera is attached...

Hill, A. B.; Bevers, D. V.

1979-01-01T23:59:59.000Z

54

GARDIENNAGE Help Desk technique  

E-Print Network (OSTI)

--> Relais vers Garde GTPW ASCENSEURS 1ère impulsion Dispatching UCL (Système EBI Honeywell GTPW) Dispatching UCL --> SECURITAS LEW ALARMES CDC (Système EBI -Enterprise Building Integrator -Honeywell GTPW téléphonique ) TECHNIQUES CDC (Système EBI Honeywell GTPW) GTPW (Heures ouvrables) CDC (En dehors des heures

Nesterov, Yurii

55

Two-Dimensional Measurement of n+-p Asymmetrical Junctions in Multicrystalline Silicon Solar Cells Using AFM-Based Electrical Techniques with Nanometer Resolution: Preprint  

SciTech Connect

Lateral inhomogeneities of modern solar cells demand direct electrical imaging with nanometer resolution. We show that atomic force microscopy (AFM)-based electrical techniques provide unique junction characterizations, giving a two-dimensional determination of junction locations. Two AFM-based techniques, scanning capacitance microscopy/spectroscopy (SCM/SCS) and scanning Kelvin probe force microscopy (SKPFM), were significantly improved and applied to the junction characterizations of multicrystalline silicon (mc-Si) cells. The SCS spectra were taken pixel by pixel by precisely controlling the tip positions in the junction area. The spectra reveal distinctive features that depend closely on the position relative to the electrical junction, which allows us to indentify the electrical junction location. In addition, SKPFM directly probes the built-in potential over the junction area modified by the surface band bending, which allows us to deduce the metallurgical junction location by identifying a peak of the electric field. Our results demonstrate resolutions of 10-40 nm, depending on the techniques (SCS or SKPFM). These direct electrical measurements with nanometer resolution and intrinsic two-dimensional capability are well suited for investigating the junction distribution of solar cells with lateral inhomogeneities.

Jiang, C. S.; Moutinho, H. R.; Li, J. V.; Al-Jassim, M. M.; Heath, J. T.

2011-07-01T23:59:59.000Z

56

Query Optimization Techniques Class Hierarchies  

E-Print Network (OSTI)

Query Optimization Techniques Exploiting Class Hierarchies Sophie Cluet 1 Guido Moerkotte 2 1 INRIA Since the introduction of object base management systems (OBMS), many query optimization techniques tailored for object query languages have been proposed. They adapt known optimization techniques

Mannheim, Universität

57

Drilling Techniques | Open Energy Information  

Open Energy Info (EERE)

Page Page Edit with form History Facebook icon Twitter icon » Drilling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Drilling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(20) Exploration Technique Information Exploration Group: Drilling Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Identify lithology and mineralization, provide core samples and rock cuttings Stratigraphic/Structural: Retrieved samples can be used to identify stratigraphy and structural features such as fracture networks or faults Hydrological: -Water samples can be used for geochemical analysis -Fluid pressures can be used to estimate flow rates

58

Miniaturization Techniques for Accelerators  

SciTech Connect

The possibility of laser driven accelerators [1] suggests the need for new structures based on micromachining and integrated circuit technology because of the comparable scales. Thus, we are exploring fully integrated structures including sources, optics (for both light and particle) and acceleration in a common format--an accelerator-on-chip (AOC). Tests suggest a number of preferred materials and techniques but no technical or fundamental roadblocks at scales of order 1 {micro}m or larger.

Spencer, James E.

2003-05-27T23:59:59.000Z

59

Technique Subgroupings Spectroscopy  

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

and NSLS-II beamlines according to DOE Technique Scheme and NSLS-II beamlines according to DOE Technique Scheme Technique Subgroupings Spectroscopy 01 - Low Energy Spectroscopy Infrared Photoemission U12IR, U4IR / MET* U5UA, U13 / ESM 02 - Soft X-Ray Spectroscopy Soft X-ray Spectroscopy Tender XAS U4B, U7A, X24A / SST, SSS* X15B, X19A / TES* 03 - Hard X-ray Spectroscopy EXAFS X3A, X3B, X11A, X11B, X18A, X18B, X23A2 / ISS, BMM, QAS*, XAS* 04 - Optics/Calibration/Metrology U3C,X8A/ OFT,MID Scattering 05 X-ray Diffraction X-Ray Powder Diffraction Extreme Conditions Energy Dispersive Micro-Beam Diffraction X7B,X10B,X14A,X16C,X17A / XPD,IXD* X17B2,X17B3,X17C / XPD, TEC*, 4DE* X17B1, X17B2 / NA X13B / MXD* 06 MX, footprinting Protein Crystallography X-ray footprinting X4A, X4C, X6A, X12B, X12C, X25, X29 / FMX, AMX, NYX;

60

Definition: Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Ground Electromagnetic Techniques Jump to: navigation, search Dictionary.png Ground Electromagnetic Techniques Ground electromagnetic techniques measure electromagnetic fields in order to determine subsurface electrical resistivity with the earth surface as the observation point.[1] View on Wikipedia Wikipedia Definition The electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction, and gravitation. This force is described by electromagnetic fields, and has innumerable physical instances including the interaction of electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. The word

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Magnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Magnetic Techniques Magnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Magnetic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Magnetic Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Presence of magnetic minerals such as magnetite. Stratigraphic/Structural: Mapping of basement structures, horst blocks, fault systems, fracture zones, dykes and intrusions. Hydrological: The circulation of hydrothermal fluid may impact the magnetic susceptibility of rocks. Thermal: Rocks lose their magnetic properties at the Curie temperature (580° C for magnetite) [1] and, upon cooling, remagnetize in the present magnetic field orientation. The Curie point depth in the subsurface may be determined in a magnetic survey to provide information about hydrothermal activity in a region.

62

Gravity Techniques | Open Energy Information  

Open Energy Info (EERE)

Gravity Techniques Gravity Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gravity Techniques Details Activities (0) Areas (0) Regions (0) NEPA(1) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Gravity Techniques Parent Exploration Technique: Geophysical Techniques Information Provided by Technique Lithology: Distribution of density in the subsurface enables inference of rock type. Stratigraphic/Structural: Delineation of steeply dipping formations, geological discontinuities and faults, intrusions and the deposition of silicates due to hydrothermal activity. Hydrological: Density of sedimentary rocks are strongly influenced by fluid contained within pore space. Dry bulk density refers to the rock with no moisture, while the wet bulk density accounts for water saturation; fluid content may alter density by up to 30%.(Sharma, 1997)

63

Applied ALARA techniques  

SciTech Connect

The presentation focuses on some of the time-proven and new technologies being used to accomplish radiological work. These techniques can be applied at nuclear facilities to reduce radiation doses and protect the environment. The last reactor plants and processing facilities were shutdown and Hanford was given a new mission to put the facilities in a safe condition, decontaminate, and prepare them for decommissioning. The skills that were necessary to operate these facilities were different than the skills needed today to clean up Hanford. Workers were not familiar with many of the tools, equipment, and materials needed to accomplish:the new mission, which includes clean up of contaminated areas in and around all the facilities, recovery of reactor fuel from spent fuel pools, and the removal of millions of gallons of highly radioactive waste from 177 underground tanks. In addition, this work has to be done with a reduced number of workers and a smaller budget. At Hanford, facilities contain a myriad of radioactive isotopes that are 2048 located inside plant systems, underground tanks, and the soil. As cleanup work at Hanford began, it became obvious early that in order to get workers to apply ALARA and use hew tools and equipment to accomplish the radiological work it was necessary to plan the work in advance and get radiological control and/or ALARA committee personnel involved early in the planning process. Emphasis was placed on applying,ALARA techniques to reduce dose, limit contamination spread and minimize the amount of radioactive waste generated. Progress on the cleanup has,b6en steady and Hanford workers have learned to use different types of engineered controls and ALARA techniques to perform radiological work. The purpose of this presentation is to share the lessons learned on how Hanford is accomplishing radiological work.

Waggoner, L.O.

1998-02-05T23:59:59.000Z

64

Preconditioning Techniques for the Bidomain Equations  

Science Journals Connector (OSTI)

In this work we discuss parallel preconditioning techniques for the bidomain equations, a non-linear system of partial differential equations which is widely used for describing electrical activity in cardiac ...

Rodrigo Weber Dos Santos; G. Plank; S. Bauer

2005-01-01T23:59:59.000Z

65

Field Techniques | Open Energy Information  

Open Energy Info (EERE)

Field Techniques Field Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Bulk and trace element analysis of rocks, minerals, and sediments. Identify and document surface geology and mineralogy. Rapid and unambiguous identification of unknown minerals.[1] Stratigraphic/Structural: Locates active faults in the area of interest. Map fault and fracture patterns, kinematic information. Can reveal relatively high permeability zones. Provides information about the time and environment which formed a particular geologic unit. Microscopic rock textures can be used to estimate the history of stress and strain, and/or faulting.

66

Influence of Boron doping on the structural, optical and electrical properties of CdO thin films by spray pyrolysis technique  

SciTech Connect

Cadmium oxide and Boron (B) doped Cadmium oxide thin films were deposited using spray pyrolysis technique. The structural, morphological, electrical and optical properties of undoped and B doped CdO films are analyzed by varying the dopant concentration in the solution. The structural study shows the polycrystalline nature and cubic structure of undoped and B doped CdO thin films. Surface morphological study reveals that the grains are spherical in shape. Optical and electrical studies showed n-type semiconducting nature and optical band gap of 2.44 eV of deposited thin films.

Velusamy, P., E-mail: rampap2k@yahoo.co.in; Babu, R. Ramesh, E-mail: rampap2k@yahoo.co.in [Crystal Growth and Thin Films Laboratory, Department of Physics, Bharathidasan University, Tiruchirappalli- 620024, Tamil Nadu (India); Ramamurthi, K. [Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM University, Kattankulathur - 603203, Tamil Nadu (India)

2014-04-24T23:59:59.000Z

67

Definition: Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Profiling Techniques Electromagnetic Profiling Techniques Jump to: navigation, search Dictionary.png Electromagnetic Profiling Techniques Electromagnetic profiling techniques map lateral variations in subsurface resistivity.[1] View on Wikipedia Wikipedia Definition Exploration geophysics is the applied branch of geophysics which uses surface methods to measure the physical properties of the subsurface Earth, along with the anomalies in these properties, in order to detect or infer the presence and position of ore minerals, hydrocarbons, geothermal reservoirs, groundwater reservoirs, and other geological structures. Exploration geophysics is the practical application of physical methods (such as seismic, gravitational, magnetic, electrical and electromagnetic) to measure the physical properties of rocks, and in particular, to detect

68

Definition: Magnetotelluric Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Magnetotelluric Techniques Jump to: navigation, search Dictionary.png Magnetotelluric Techniques Magnetotellurics is an electromagnetic geophysical method used to image the electrical resistivity structure of the subsurface through the measurement of electrical and magnetic fields at the earth's surface.[1] View on Wikipedia Wikipedia Definition Magnetotellurics (MT) is an electromagnetic geophysical method of imaging the earth's subsurface by measuring natural variations of electrical and magnetic fields at the Earth's surface. Investigation depth ranges from 300m below ground by recording higher frequencies down to 10,000m or deeper with long-period soundings. Developed in Russia and

69

Dose Reduction Techniques  

SciTech Connect

As radiation safety specialists, one of the things we are required to do is evaluate tools, equipment, materials and work practices and decide whether the use of these products or work practices will reduce radiation dose or risk to the environment. There is a tendency for many workers that work with radioactive material to accomplish radiological work the same way they have always done it rather than look for new technology or change their work practices. New technology is being developed all the time that can make radiological work easier and result in less radiation dose to the worker or reduce the possibility that contamination will be spread to the environment. As we discuss the various tools and techniques that reduce radiation dose, keep in mind that the radiological controls should be reasonable. We can not always get the dose to zero, so we must try to accomplish the work efficiently and cost-effectively. There are times we may have to accept there is only so much you can do. The goal is to do the smart things that protect the worker but do not hinder him while the task is being accomplished. In addition, we should not demand that large amounts of money be spent for equipment that has marginal value in order to save a few millirem. We have broken the handout into sections that should simplify the presentation. Time, distance, shielding, and source reduction are methods used to reduce dose and are covered in Part I on work execution. We then look at operational considerations, radiological design parameters, and discuss the characteristics of personnel who deal with ALARA. This handout should give you an overview of what it takes to have an effective dose reduction program.

WAGGONER, L.O.

2000-05-16T23:59:59.000Z

70

Formation Testing Techniques | Open Energy Information  

Open Energy Info (EERE)

Formation Testing Techniques Formation Testing Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Formation Testing Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Formation Testing Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Formation Testing Techniques: No definition has been provided for this term. Add a Definition References No exploration activities found. Print PDF Retrieved from "http://en.openei.org/w/index.php?title=Formation_Testing_Techniques&oldid=601973" Categories: Downhole Techniques Exploration Techniques

71

Experimental correlations for transient soot measurement in diesel exhaust aerosol with light extinction, electrical mobility and diffusion charger sensor techniques  

Science Journals Connector (OSTI)

A study of soot measurement deviation using a diffusion charger sensor with three dilution ratios was conducted in order to obtain an optimum setting that can be used to obtain accurate measurements in terms of soot mass emitted by a light-duty diesel engine under transient operating conditions. The paper includes three experimental phases: an experimental validation of the measurement settings in steady-state operating conditions; evaluation of the proposed setting under the New European Driving Cycle; and a study of correlations for different measurement techniques. These correlations provide a reliable tool for estimating soot emission from light extinction measurement or from accumulation particle mode concentration. There are several methods and correlations to estimate soot concentration in the literature but most of them were assessed for steady-state operating points. In this case, the correlations are obtained by more than 4000 points measured in transient conditions. The results of the new two correlations, with less than 4% deviation from the reference measurement, are presented in this paper.

Vicente Bermdez; Jos V Pastor; J Javier Lpez; Daniel Campos

2014-01-01T23:59:59.000Z

72

Definition: Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Techniques Electromagnetic Techniques The objective of electromagnetic (EM) techniques is to image the electrical resistivity structure of the subsurface through the measurement of naturally- or artificially-generated electromagnetic fields.[1] View on Wikipedia Wikipedia Definition The electromagnetic force is one of the four fundamental interactions in nature, the other three being the strong interaction, the weak interaction, and gravitation. This force is described by electromagnetic fields, and has innumerable physical instances including the interaction of electrically charged particles and the interaction of uncharged magnetic force fields with electrical conductors. The word electromagnetism is a compound form of two Greek terms, ἢλεκτρον, ēlektron, "amber", and μαγνήτης, magnētēs, "magnet". The science

73

techniques | OpenEI Community  

Open Energy Info (EERE)

about and discussion of smart grid technologies, tools, and techniques. The Smart Grid Investment Grant (SGIG) program is authorized by the Energy Independence and Security...

74

Multi-Agent Based Techniques for Coordinating the Distribution of Electricity in a Micro-Grid Environment  

E-Print Network (OSTI)

vehicles, to ultra-low carbon vehicles (ULCV) such as hybrids, electric vehicles and hydrogen fuel cell. 2 Background Research To reduce carbon emissions and ensure that the UK low car- bon emissions plan to the current national grid, the in- creasing demand for electricity will only result in more car- bon emissions

Southampton, University of

75

FORENSIC TECHNIQUES FOR CELL PHONES  

E-Print Network (OSTI)

June 2007 FORENSIC TECHNIQUES FOR CELL PHONES FORENSIC TECHNIQUES FOR CELL PHONES Shirley Radack cell phones are widely used for both personal and professional applications, the technology of cell forensics usually do not cover cell phones, especially those with advanced capabilities. The digital

76

A two-step photon-intermediate technique for the production of electricity, chemicals or lasers in nuclear energy conversion  

Science Journals Connector (OSTI)

The authors have developed an energy conversion concept, called Photon-Intermediate Direct Energy Conversion (PIDEC), that makes possible a two-step conversion of high grade nuclear energy (fission or fusion) to electricity or other useful high grade energy forms without intermediate thermalization. In PIDEC the nuclear fuel has a low average density, with local scale lengths significantly shorter than the range of the energetic nuclear reaction products. In the first step of the process, the nuclear energetic reaction product energy is transported to a fluorescer gas which converts it into photons. Then, in the second step of the process, the photons are transported out of the nuclear reactor to a medium which converts the photon energy to the desired product high grade energy form, such as electricity. We calculate that electricity can be produced, non-thermally, with an efficiency of up to 30%. With the addition of intermediate and bottoming thermal cycles, efficiency for electricity production could be as high as 70%, double that of conventional nuclear power plants. In addition to electric power, photolysis makes other product forms possible. These products include useful feedstock, or combustion chemicals, such as hydrogen and carbon monoxide, and excited molecular and atomic states, used for laser amplifiers or oscillators.

M.A. Prelas; F.P. Boody; E.J. Charlson; G.H. Miley

1990-01-01T23:59:59.000Z

77

Category:Data Techniques | Open Energy Information  

Open Energy Info (EERE)

navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Data Techniques page? For detailed information on Data Techniques as exploration techniques,...

78

Use of Geophysical Techniques to Characterize Fluid Flow in a...  

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

to Geothermal Prospecting Joint inversion of electrical and seismic data for Fracture char. and Imaging of Fluid Flow in Geothermal Systems Use of Geophysical Techniques...

79

Review : integration of EMI technique with global vibration technique  

E-Print Network (OSTI)

In the last decade, the development of Structural Health Monitoring (SHM) has been skyrocketing because of the serious consequences that come with structural failure. Traditional damage detection techniques, also known as ...

Ni, Suteng

2013-01-01T23:59:59.000Z

80

Well Log Techniques | Open Energy Information  

Open Energy Info (EERE)

Well Log Techniques Well Log Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Well Log Techniques Details Activities (4) Areas (4) Regions (1) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Log Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: depth and thickness of formations; lithology and porosity can be inferred Stratigraphic/Structural: reservoir thickness, reservoir geometry, borehole geometry Hydrological: permeability and fluid composition can be inferred Thermal: direct temperature measurements; thermal conductivity and heat capacity Dictionary.png Well Log Techniques: Well logging is the measurement of formation properties versus depth in a

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Well Testing Techniques | Open Energy Information  

Open Energy Info (EERE)

Well Testing Techniques Well Testing Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Well Testing Techniques Details Activities (0) Areas (0) Regions (0) NEPA(17) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Well Testing Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: Enable estimation of in-situ reservoir elastic parameters Stratigraphic/Structural: Fracture distribution, formation permeability, and ambient tectonic stresses Hydrological: provides information on permeability, location of permeable zones recharge rates, flow rates, fluid flow direction, hydrologic connections, storativity, reservoir pressures, fluid chemistry, and scaling.

82

Remote Sensing Techniques | Open Energy Information  

Open Energy Info (EERE)

Remote Sensing Techniques Remote Sensing Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Remote Sensing Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Remote Sensing Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Stratigraphic/Structural: Hydrological: Thermal: Dictionary.png Remote Sensing Techniques: Remote sensing utilizes satellite and/or airborne based sensors to collect information about a given object or area. Remote sensing data collection methods can be passive or active. Passive sensors (e.g., spectral imagers) detect natural radiation that is emitted or reflected by the object or area

83

Active Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Active Seismic Techniques Active Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Active Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

84

Borehole Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Borehole Seismic Techniques Borehole Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Borehole Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Downhole Techniques Exploration Sub Group: Borehole Seismic Techniques Parent Exploration Technique: Downhole Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation Thermal: High temperatures and pressure impact the compressional and shear wave velocities

85

Passive Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Passive Seismic Techniques Passive Seismic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Passive Seismic Techniques Details Activities (0) Areas (0) Regions (0) NEPA(4) Exploration Technique Information Exploration Group: Geophysical Techniques Exploration Sub Group: Seismic Techniques Parent Exploration Technique: Seismic Techniques Information Provided by Technique Lithology: Rock unit density influences elastic wave velocities. Stratigraphic/Structural: Structural geology- faults, folds, grabens, horst blocks, sedimentary layering, discontinuities, etc. Hydrological: Combining compressional and shear wave results can indicate the presence of fluid saturation in the formation. Thermal: High temperatures and pressure impact the compressional and shear wave velocities.

86

Technique for Measuring Hybrid Electronic Component Reliability  

SciTech Connect

Materials compatibility studies of aged, engineered materials and hardware are critical to understanding and predicting component reliability, particularly for systems with extended stockpile life requirements. Nondestructive testing capabilities for component reliability would significantly enhance lifetime predictions. For example, if the detection of crack propagation through a solder joint can be demonstrated, this technique could be used to develop baseline information to statistically determine solder joint lifelengths. This report will investigate high frequency signal response techniques for nondestructively evaluating the electrical behavior of thick film hybrid transmission lines.

Green, C.C.; Hernandez, C.L.; Hosking, F.M.; Robinson, D.; Rutherford, B.; Uribe, F.

1999-01-01T23:59:59.000Z

87

Definition: Geophysical Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Geophysical Techniques Jump to: navigation, search Dictionary.png Geophysical Techniques Geophysics is the study of the structure and composition of the earth's interior.[1] View on Wikipedia Wikipedia Definition Exploration geophysics is the applied branch of geophysics which uses surface methods to measure the physical properties of the subsurface Earth, along with the anomalies in these properties, in order to detect or infer the presence and position of ore minerals, hydrocarbons, geothermal reservoirs, groundwater reservoirs, and other geological structures. Exploration geophysics is the practical application of physical methods (such as seismic, gravitational, magnetic, electrical and electromagnetic)

88

Review of uranium bioassay techniques  

SciTech Connect

A variety of analytical techniques is available for evaluating uranium in excreta and tissues at levels appropriate for occupational exposure control and evaluation. A few (fluorometry, kinetic phosphorescence analysis, {alpha}-particle spectrometry, neutron irradiation techniques, and inductively-coupled plasma mass spectrometry) have also been demonstrated as capable of determining uranium in these materials at levels comparable to those which occur naturally. Sample preparation requirements and isotopic sensitivities vary widely among these techniques and should be considered carefully when choosing a method. This report discusses analytical techniques used for evaluating uranium in biological matrices (primarily urine) and limits of detection reported in the literature. No cost comparison is attempted, although references are cited which address cost. Techniques discussed include: {alpha}-particle spectrometry; liquid scintillation spectrometry, fluorometry, phosphorometry, neutron activation analysis, fission-track counting, UV-visible absorption spectrophotometry, resonance ionization mass spectrometry, and inductively-coupled plasma mass spectrometry. A summary table of reported limits of detection and of the more important experimental conditions associated with these reported limits is also provided.

Bogard, J.S.

1996-04-01T23:59:59.000Z

89

Review of anti-islanding techniques in distributed generators  

Science Journals Connector (OSTI)

In this paper a revision about different techniques for islanding detection in distributed generators is presented. On one hand, remote techniques, not integrated in the distributed generators, are discussed. On the other hand, local techniques, integrated in the distributed generator, are described. Furthermore, it is discussed how the local techniques are divided into passive techniques, based on exclusively monitoring some electrical parameters, and active techniques, which intentionally introduce disturbances at the output of the inverter, in order to determine if some parameters are affected.

D. Velasco; C.L. Trujillo; G. Garcer; E. Figueres

2010-01-01T23:59:59.000Z

90

APS 7-BM Beamline: Techniques  

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

Motivation Motivation The major thrust of the 7-BM beamline is the application of synchrotron radiation tools to examine complex fluid flowfields. Two major techniques are applied: radiography and x-ray fluorescence spectroscopy. While optical techniques are often ideally suited to the study of fluid flowfields, there are certain flowfields for which optical diagnostics have significant challenges. These include: Multiphase flows: Visible light interacts strongly with phase boundaries. This leads to strong refraction, scattering, and attenuation of light. These effects hinder quantitative measurements of dense multiphase flowfields. Opaque media. Flows with strong refractive effects. Luminous flames: The strong light emission from sooting flames can hinder certain optical diagnostics.

91

Data and Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

and Modeling Techniques and Modeling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Data and Modeling Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Data and Modeling Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Rock types, rock chemistry, stratigraphic layer organization Stratigraphic/Structural: Stress fields and magnitudes, location and shape of permeable and non-permeable structures, faults, and fracture patterns Hydrological: Visualization and prediction of the flow patterns and characteristics of geothermal fluids, hydrothermal fluid flow characteristics, up-flow patterns

92

Data Mining: Concepts and Techniques  

E-Print Network (OSTI)

1 Data Mining: Concepts and Techniques (3rd ed.) -- Chapter 3 -- Jiawei Han, Micheline Kamber. All rights reserved. #12;2013/08/12 2 #12;33 Chapter 3: Data Preprocessing n Data Preprocessing: An Overview n Data Quality n Major Tasks in Data Preprocessing n Data Cleaning n Data Integration n Data

Geldenhuys, Jaco

93

An analysis of induction motor testing techniques  

SciTech Connect

There are two main failure mechanisms in induction motors: bearing related and stator related. The Electric Power Research Institute (EPRI) conducted a study which was completed in 1985, and found that near 37% of all failures were attributed to stator problems. Another data source for motor failures is the Nuclear Plant Reliability Data System (NPRDS). This database reveals that approximately 55% of all motors were identified as being degraded before failure occurred. Of these, approximately 35% were due to electrical faults. These are the faults which this paper will attempt to identify through testing techniques. This paper is a discussion of the current techniques used to predict incipient failure of induction motors. In the past, the main tests were those to assess the integrity of the ground insulation. However, most insulation failures are believed to involve turn or strand insulation, which makes traditional tests alone inadequate for condition assessment. Furthermore, these tests have several limitations which need consideration when interpreting the results. This paper will concentrate on predictive maintenance techniques which detect electrical problems. It will present appropriate methods and tests, and discuss the strengths and weaknesses of each.

Soergel, S. [Entergy Operations Inc., Killona, LA (United States)

1996-12-31T23:59:59.000Z

94

Updated Satellite Technique to Forecast Heavy Snow  

Science Journals Connector (OSTI)

Certain satellite interpretation techniques have proven quite useful in the heavy snow forecast process. Those considered best are briefly reviewed, and another technique is introduced. This new technique was found to be most valuable in cyclonic ...

Edward C. Johnston

1995-06-01T23:59:59.000Z

95

Low background techniques in XMASS  

SciTech Connect

The XMASS project aims to detect pp and {sup 7}Be solar neutrinos, neutrino-less double beta decay, and dark matter searches using ultra-pure liquid xenon. The first stage of XMASS project is concentrated on dark matter searches using 800 kg liquid xenon detector which requires low background and low threshold. Several techniques applied to XMASS detector for low background will be presented.

Takeda, Atsushi [Kamioka Observatory, ICRR, University of Tokyo, 456 Higashi-Mozumi, Kamioka-cho, Hida, Gifu, 506-1205 (Japan)

2011-04-27T23:59:59.000Z

96

Chapter 6 - Seismic Inversion Techniques  

Science Journals Connector (OSTI)

Abstract Seismic inversion techniques were developed as a discipline at the same time that seismic technologies were widely applied in oil exploration and development starting in the 1980s. Except for basic theories and principles, seismic inversion techniques are different from traditional seismic exploration methods in geological tasks, involving basic information as well as study approaches. In the early stages of exploration, the geological task of seismic exploration was to find structures and identify traps, and seismic exploration techniques always focused on the ups and downs of reflection interfaces. They mainly relied on the travel time for structural interpretation. The main work of reservoir geophysics is to study the heterogeneity of a reservoir, and the main geological task is to make predictions on the reservoir parameters. Scientists focus on the lateral variation of reservoir characteristics and conduct seismic interpretation based on the information extracted from the results of reservoir seismic inversion. Seismic inversion has developed rapidly in recent years, including recursive inversion, log-constrained inversion, and multiparameter lithological seismic inversion. We choose different methods according to the geological characteristics and specific problems of the study area.

Ming Li; Yimin Zhao

2014-01-01T23:59:59.000Z

97

Template:ExplorationTechnique | Open Energy Information  

Open Energy Info (EERE)

'ExplorationTechnique' template. To define a new Exploration 'ExplorationTechnique' template. To define a new Exploration Technique, please use the Exploration Technique Form. Parameters Definition - A link to the OpenEI definition of the technique (optional) ExplorationGroup - ExplorationSubGroup - ParentExplorationTechnique - parent technique for relationship tree LithologyInfo - the type of lithology information this technique could provide StratInfo - the type of stratigraphic and/or structural information this technique could provide HydroInfo - the type of hydrogeology information this technique could provide ThermalInfo - the type of temperature information this technique could provide EstimatedCostLowUSD - the estimated value only of the low end of the cost range (units described in CostUnit) EstimatedCostMedianUSD - the estimated value only of the median cost

98

Mechanical decontamination techniques for floor drain systems  

SciTech Connect

The unprecedented nature of cleanup activities at Three Mile Island Unit 2 (TMI-2) following the 1979 accident has necessitated the development of new techniques to deal with radiation and contamination in the plant. One of these problems was decontamination of floor drain systems, which had become highly contaminated with various forms of dirt and sludge containing high levels of fission products and fuel from the damaged reactor core. The bulk of this contamination is loosely adherent to the drain pipe walls; however, significant amounts of contamination have become incorporated into pipe wall oxide and corrosion layers and embedded in microscopic pits and fissures in the pipe wall material. The need to remove this contamination was recognized early in the TMI-2 cleanup effort. A program consisting of development and laboratory testing of floor drain decontamination techniques was undertaken early in the cleanup with support from the Electric Power Research Institute (EPRI). Based on this initial research, two techniques were judged to show promise for use at TMI-2: a rotating brush hone system and a high-pressure water mole nozzle system. Actual use of these devices to clean floor drains at TMI-2 has yielded mixed decontamination results. The decontamination effectiveness that has been obtained is highly dependent on the nature of the contamination in the drain pipe and the combination of decontamination techniques used.

Palau, G.L.; Saigusa, Moriyuki

1987-01-01T23:59:59.000Z

99

A New Neutron Detection Technique: Fissile Resistors  

Science Journals Connector (OSTI)

Technical Paper / Argonne National Laboratory Specialists Workshop on Basic Research Needs for Nuclear Waste Management / Technique

M. Roche; J. Morin; R. Musart; B. Pierre

100

Category:Field Techniques | Open Energy Information  

Open Energy Info (EERE)

Field Techniques Field Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Field Techniques page? For detailed information on Field Techniques as exploration techniques, click here. Category:Field Techniques Add.png Add a new Field Techniques Technique Subcategories This category has the following 2 subcategories, out of 2 total. D [×] Data Collection and Mapping‎ 5 pages F [+] Field Sampling‎ (2 categories) 4 pages Pages in category "Field Techniques" The following 4 pages are in this category, out of 4 total. D Data Collection and Mapping F Field Sampling H Hand-held X-Ray Fluorescence (XRF) P Portable X-Ray Diffraction (XRD) Retrieved from "http://en.openei.org/w/index.php?title=Category:Field_Techniques&oldid=689815"

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Applications of photoacoustic sensing techniques  

Science Journals Connector (OSTI)

This paper reviews the theory and applications of photoacoustic (also called optoacoustic) methods belonging to the more general area of photothermal measurement techniques. The theory covers excitation of gaseous or condensed samples with modulated continuous light beams or pulsed light beams. The applications of photoacoustic methods include spectroscopy, monitoring deexcitation processes, probing physical properties of materials, and generating mechanical motions. Several other related photothermal methods, as well as particle-acoustics and wave-acoustics methods are also described. This review complements an earlier and narrower review [Rev. Mod. Phys. 53, 517 (1981)] that is mainly concerned with sensitive detection by pulsed photoacoustic spectroscopy in condensed matter.

Andrew C. Tam

1986-04-01T23:59:59.000Z

102

Model building techniques for analysis.  

SciTech Connect

The practice of mechanical engineering for product development has evolved into a complex activity that requires a team of specialists for success. Sandia National Laboratories (SNL) has product engineers, mechanical designers, design engineers, manufacturing engineers, mechanical analysts and experimentalists, qualification engineers, and others that contribute through product realization teams to develop new mechanical hardware. The goal of SNL's Design Group is to change product development by enabling design teams to collaborate within a virtual model-based environment whereby analysis is used to guide design decisions. Computer-aided design (CAD) models using PTC's Pro/ENGINEER software tools are heavily relied upon in the product definition stage of parts and assemblies at SNL. The three-dimensional CAD solid model acts as the design solid model that is filled with all of the detailed design definition needed to manufacture the parts. Analysis is an important part of the product development process. The CAD design solid model (DSM) is the foundation for the creation of the analysis solid model (ASM). Creating an ASM from the DSM currently is a time-consuming effort; the turnaround time for results of a design needs to be decreased to have an impact on the overall product development. This effort can be decreased immensely through simple Pro/ENGINEER modeling techniques that summarize to the method features are created in a part model. This document contains recommended modeling techniques that increase the efficiency of the creation of the ASM from the DSM.

Walther, Howard P.; McDaniel, Karen Lynn; Keener, Donald; Cordova, Theresa Elena; Henry, Ronald C.; Brooks, Sean; Martin, Wilbur D.

2009-09-01T23:59:59.000Z

103

High-Throughput Screening Techniques  

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

Throughput Throughput Screening Techniques for Biomass Conversion Stephen R. Decker & Roman Brunecky & Melvin P. Tucker & Michael E. Himmel & Michael J. Selig Published online: 14 October 2009 # US Government 2009 Abstract High-throughput (HTP) screening of biomass or biomass-degrading enzymes, regardless of the desired outcome, is fraught with obstacles and challenges not typically faced in more traditional biotechnology. The enzyme systems are complex and synergistic and the substrate is highly heterogeneous, insoluble, and difficult to dispense. Digestions are often carried out for days at temperatures of 50°C or higher, leading to significant challenges regarding evaporation control in small well volumes. Furthermore, it is often desirable to condition or "pretreat" the biomass at extreme temperatures and/or pH to enhance enzyme digestibility.

104

Techniques to develop data for hydrogeochemical models  

SciTech Connect

The utility industry, through its research and development organization, the Electric Power Research Institute (EPRI), is developing the capability to evaluate potential migration of waste constitutents from utility disposal sites to the environment. These investigations have developed computer programs to predict leaching, transport, attenuation, and fate of inorganic chemicals. To predict solute transport at a site, the computer programs require data concerning the physical and chemical conditions that affect solute transport at the site. This manual provides a comprehensive view of the data requirements for computer programs that predict the fate of dissolved materials in the subsurface environment and describes techniques to measure or estimate these data. In this manual, basic concepts are described first and individual properties and their associated measurement or estimation techniques are described later. The first three sections review hydrologic and geochemical concepts, discuss data requirements for geohydrochemical computer programs, and describe the types of information the programs produce. The remaining sections define and/or describe the properties of interest for geohydrochemical modeling and summarize available technique to measure or estimate values for these properties. A glossary of terms associated with geohydrochemical modeling and an index are provided at the end of this manual. 318 refs., 9 figs., 66 tabs.

Thompson, C.M.; Holcombe, L.J.; Gancarz, D.H.; Behl, A.E. (Radian Corp., Austin, TX (USA)); Erickson, J.R.; Star, I.; Waddell, R.K. (Geotrans, Inc., Boulder, CO (USA)); Fruchter, J.S. (Battelle Pacific Northwest Lab., Richland, WA (USA))

1989-12-01T23:59:59.000Z

105

Lab Analysis Techniques | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » Lab Analysis Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Lab Analysis Techniques Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Lab Analysis Techniques Exploration Sub Group: None Parent Exploration Technique: Exploration Techniques Information Provided by Technique Lithology: Water rock interaction; Rapid and unambiguous identification of unknown minerals; Bulk and trace element analysis of rocks, minerals, and sediments; Obtain detailed information about rock composition and morphology; Determine detailed information about rock composition and morphology; Cuttings are used to define lithology; Core analysis is done to define lithology

106

Category:Geochemical Techniques | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Geochemical Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Geochemical Techniques page? For detailed information on exploration techniques, click here. Category:Geochemical Techniques Add.png Add a new Geochemical Techniques Technique Subcategories This category has only the following subcategory. G [×] Geochemical Data Analysis‎ 3 pages Pages in category "Geochemical Techniques" This category contains only the following page. G Geochemical Data Analysis Retrieved from "http://en.openei.org/w/index.php?title=Category:Geochemical_Techniques&oldid=689823"

107

Energy Reduction Techniques for Caches and Multiprocessors  

E-Print Network (OSTI)

Energy Reduction Techniques for Caches and Multiprocessors #12;#12;Energy Reduction Techniques-90-72298-03-4 Keywords: Energy reduction, Caches, Multi processor scheduling Cover design: Floris de Langen Copyright c the years. #12;#12;Energy Reduction Techniques for Caches and Multiprocessors Pepijn de Langen Abstract E

Kuzmanov, Georgi

108

Best practice techniques for environmental radiological monitoring  

E-Print Network (OSTI)

Best practice techniques for environmental radiological monitoring Science Report ­ SC030308/SR SCHO0407BMNL-E-P #12;ii Science Report Best Practice Techniques for Environmental Radiological #12;iv Science Report Best Practice Techniques for Environmental Radiological Monitoring Executive

109

Category:Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Downhole Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Downhole Techniques page? For detailed information on Downhole Techniques as exploration techniques, click here. Category:Downhole Techniques Add.png Add a new Downhole Techniques Technique Subcategories This category has the following 5 subcategories, out of 5 total. B [×] Borehole Seismic Techniques‎ 2 pages F [×] Formation Testing Techniques‎ O [×] Open-Hole Techniques‎ W [×] Well Log Techniques‎ 17 pages [×] Well Testing Techniques‎ 8 pages

110

Evaluation of instantaneous surface water discharge techniques  

SciTech Connect

To obtain accurate discharge data in any surface water monitoring program, the selection of an appropriate technique is essential. This paper examines five instantaneous discharge techniques most commonly used throughout the Appalachian coal fields. The techniques evaluated in this paper include: (1) dye-dilution; (2) cross-sectional area-velocity; (3) weir; (4) Manning's equation; and (5) direct discharge. Each of the instantaneous discharge techniques was evaluated in terms of: (1) initial equipment investment cost per discharge determination; (2) the advantages and disadvantages of each technique; and (3) the appropriate application of each technique. From this evaluation, it was apparent that a combination of several techniques are needed to determine a variety of discharges depending on the characteristics of the discharge point.

Buckles, J.D.

1984-12-01T23:59:59.000Z

111

Property:ExplorationTechnique | Open Energy Information  

Open Energy Info (EERE)

ExplorationTechnique ExplorationTechnique Jump to: navigation, search Property Name ExplorationTechnique Property Type Page Description The ExplorationTechnique used in the Exploration Activity. Use the form ExplorationTechnique to create new exploration technique pages. Subproperties This property has the following 1 subproperty: A Aeromagnetic Survey At Crump's Hot Springs Area (DOE GTP) Pages using the property "ExplorationTechnique" Showing 25 pages using this property. (previous 25) (next 25) 2 2-M Probe At Alum Area (Kratt, Et Al., 2010) + 2-M Probe Survey + 2-M Probe At Astor Pass Area (Kratt, Et Al., 2010) + 2-M Probe Survey + 2-M Probe At Black Warrior Area (DOE GTP) + 2-M Probe Survey + 2-M Probe At Columbus Salt Marsh Area (Kratt, Et Al., 2010) + 2-M Probe Survey +

112

(1) Wireless Telegraphy (2) Electricity in Agriculture and Horticulture (3) Modern Electric Practice (4) The Theory of the Lead Accumulator (5) Electric Motors (6) Notices sur l'lectricit (7) L'Anne Technique (19021903)  

Science Journals Connector (OSTI)

... to refer briefly to the matter contained in the present volume. This is devoted to electric tramways, and is divided into seven chapters, dealing with overhead construction, feeders, surface ... , dealing with overhead construction, feeders, surface contact systems, conduit systems, rolling stock, electric boats and ...

M. S.

1904-11-03T23:59:59.000Z

113

Measurement and characterization techniques for thermoelectric materials  

SciTech Connect

Characterization of thermoelectric materials can pose many problems. A temperature difference can be established across these materials as an electrical current is passed due to the Peltier effect. The thermopower of these materials is quite large and thus large thermal voltages can contribute to many of the measurements necessary to investigate these materials. This paper will discuss the chracterization techniques necessary to investigate these materials and provide an overview of some of the potential systematic errors which can arise. It will also discuss some of the corrections one needs to consider. This should provide an introduction to the characterization and measurement of thermoelectric materials and provide references for a more in depth discussion of the concepts. It should also serve as an indication of the care that must be taken while working with thermoelectric materials.

Tritt, T.M.

1997-07-01T23:59:59.000Z

114

Telecommunications Technique and Broadcasting Receivers  

Science Journals Connector (OSTI)

... The first of these papers is entitled "The Application and Use of Quartz Crystals in Telecommunications"and its author is Mr. C. F. Booth, of the Radio Branch of ... -electric crystal has played a major part in the advances which have been realized in telecommunications during the past ten years, and without its aid many radio-frequency generation and ...

1941-02-15T23:59:59.000Z

115

A new finite element lifting surface technique  

E-Print Network (OSTI)

Element Lifting Surface Technique. (May 1973) James David Kocurek, B. S. , Texas ASM University 1 Directed by: Dr. Balusu M. Rao A numerical lifting surface technique based on discrete vortex loading elements is developed for calculating the steady..., incompress- ; ible, aerodynamic load distribution on a general, nonplanar, ideal- 1 ized body. The method, described as the "Vortex Box" technique, has been applied to general planar wings of arbitrary straight line ' geometry and to annular wings...

Kocurek, James David

2012-06-07T23:59:59.000Z

116

REVIEW OF AIR FLOW MEASUREMENT TECHNIQUES  

Office of Scientific and Technical Information (OSTI)

9747 9747 Review of Airflow Measurement Techniques Jennifer McWilliams Energy Performance of Buildings Group Environmental Energy Technologies Division Lawrence Berkeley National Laboratory Berkeley, CA 94720 December 1, 2002 Abstract Airflow measurement techniques are necessary to determine the most basic of indoor air quality questions: "Is there enough fresh air to provide a healthy environment for the occupants of the building?" This paper outlines airflow measurement techniques, but it does not make recommendations for techniques that should be used. The airflows that will be discussed are those within a room or zone, those between rooms or zones, such as through doorways (open or closed) or passive vents, those between the building and

117

Computer vision techniques for underwater navigation  

E-Print Network (OSTI)

DCS) Chapter 2 Computer Vision . . 2.1 Labeling . . . . 2.2OF CALIFORNIA, SAN DIEGO Computer Vision Techniques fordegree Master of Science in Computer Science by Christopher

Barngrover, Christopher M.

2010-01-01T23:59:59.000Z

118

Propane earth materials drying techniques and technologies.  

E-Print Network (OSTI)

??A feasibility study for the use of propane as a subbase drying technique. Michael Blahut (1) Dr. Vernon Schaefer (2) Dr. Chris Williams (3) The (more)

Blahut, Michael Edward

2010-01-01T23:59:59.000Z

119

Uncertainty Quantification Techniques for Sensor Calibration...  

Office of Scientific and Technical Information (OSTI)

Uncertainty Quantification Techniques for Sensor Calibration Monitoring in Nuclear Power Plants Re-direct Destination: Temp Data Fields Ramuhalli, Pradeep; Lin, Guang; Crawford,...

120

Airborne electromagnetic surveys as a reconnaissance technique...  

Open Energy Info (EERE)

Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Abstract INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five...

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Category:Exploration Techniques | Open Energy Information  

Open Energy Info (EERE)

Techniques Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Geothermal Exploration page? For detailed information on Geothermal Exploration, click here. Category:Exploration Techniques Add.png Add a new Exploration Technique Subcategories This category has the following 9 subcategories, out of 9 total. D [+] Data and Modeling Techniques‎ (2 categories) 2 pages [+] Downhole Techniques‎ (5 categories) 10 pages [+] Drilling Techniques‎ (2 categories) 4 pages F [+] Field Methods‎ (1 categories) [+] Field Techniques‎ (2 categories) 4 pages G [+] Geochemical Techniques‎ (1 categories) 1 pages G cont. [+] Geophysical Techniques‎ (4 categories) 5 pages L [+] Lab Analysis Techniques‎ (2 categories) 4 pages R [+] Remote Sensing Techniques‎ (2 categories) 2 pages

122

Transportation Techniques LLC | Open Energy Information  

Open Energy Info (EERE)

Techniques LLC Place: Denver, CO, Colorado Zip: 80205 Sector: Vehicles Product: Colorado-USA-based company that uses patented series hybrid technology to design and develop hybrid...

123

Parameter Estimation Versus Homogenization Techniques in Time-Domain Characterization of Composite Dielectrics  

E-Print Network (OSTI)

Parameter Estimation Versus Homogenization Techniques in Time-Domain Characterization of Composite problem approach to parameter estimation with homogenization techniques for characterizing the electrical with heterogeneous micro-structures which are described by spatially periodic parameters. We also consider

124

Applying Quantitative Marketing Techniques to the Internet  

E-Print Network (OSTI)

. Blattberg and Deighton [1991] laid out a good framework for Internet marketing in their articleApplying Quantitative Marketing Techniques to the Internet by Alan L. Montgomery Carnegie Mellon with clickstream data. I illustrate these four modeling techniques and discuss their potential for solving Internet

Faloutsos, Christos

125

Efficient Techniques of ANN-Based Microwave  

E-Print Network (OSTI)

.g., sintering) MW NDE/NDT Technique Where Used W F CW F CW F CW F C WorkshopWorkshopWorkshopWorkshop #12 in closed systems ­ an attractive technology of NDE/NDT capable of serving many practical needs. W F CW F CW of all the proposed techniques: NDE/NDT of objects in closed systems (resonators or waveguides

Yakovlev, Vadim

126

Summary-Invisible Networking: Techniques and Defenses  

E-Print Network (OSTI)

Summary-Invisible Networking: Techniques and Defenses Lei Wei, Michael K. Reiter, and Ketan Mayer explored. We investigate the combination of these ideas, which we term Summary-Invisible Networking (SIN #12;Summary-Invisible Networking: Techniques and Defenses 211 community of security analysts now holds

Reiter, Michael

127

Patch-Clamp Analysis ADVANCED TECHNIQUES  

E-Print Network (OSTI)

Patch-Clamp Analysis ADVANCED TECHNIQUES Second Edition Edited by Wolfgang Walz Department of the development of the planar patch technique. Instrumentation based on the planar patch clamp principle is made available by Nanion Technologies GmbH. (www.nanion.de) #12;14 Planar Patch Clamping Jan C. Behrends

Movileanu, Liviu

128

Power reduction techniques for microprocessor systems  

Science Journals Connector (OSTI)

Power consumption is a major factor that limits the performance of computers. We survey the state of the art in techniques that reduce the total power consumed by a microprocessor system over time. These techniques are applied at various ... Keywords: Energy dissipation, power reduction

Vasanth Venkatachalam; Michael Franz

2005-09-01T23:59:59.000Z

129

A comparative study of the electrical properties of Pd/ZnO Schottky contacts fabricated using electron beam deposition and resistive/thermal evaporation techniques  

SciTech Connect

A systematic investigation to check the quality of Pd Schottky contacts deposited on ZnO has been performed on electron beam (e-beam) deposited and resistively/thermally evaporated samples using current-voltage, IV, and conventional deep level transient spectroscopy (DLTS) measurements. Room temperature IV measurements reveal the dominance of pure thermionic emission on the resistively evaporated contacts, while the e-beam deposited contacts show the dominance of generation recombination at low voltages, <0.30 V, and the dominance of pure thermionic emission at high voltages, greater than 0.30 V. The resistively evaporated contacts have very low reverse currents of the order of 10{sup -10} A at a reverse voltage of 1.0 V whereas the e-beam deposited contacts have reverse currents of the order of 10{sup -6} A at 1.0 V. Average ideality factors have been determined as (1.43 {+-} 0.01) and (1.66 {+-} 0.02) for the resistively evaporated contacts and e-beam deposited contacts, respectively. The IV barrier heights have been calculated as (0.721 {+-} 0.002) eV and (0.624 {+-} 0.005) eV for the resistively evaporated and e-beam deposited contacts, respectively. Conventional DLTS measurements reveal the presence of three prominent defects in both the resistive and e-beam contacts. Two extra peaks with energy levels of 0.60 and 0.81 eV below the conduction band minimum have been observed in the e-beam deposited contacts. These have been explained as contributing to the generation recombination current that dominates at low voltages and high leakage currents. Based on the reverse current at 1.0 V, the degree of rectification, the dominant current transport mechanism and the observed defects, we conclude that the resistive evaporation technique yields better quality Schottky contacts for use in solar cells and ultraviolet detectors compared to the e-beam deposition technique. The 0.60 eV has been identified as possibly related to the unoccupied level for the doubly charged oxygen vacancy, V{sub o}{sup 2+}.

Mtangi, W.; Auret, F. D.; Janse van Rensburg, P. J.; Coelho, S. M. M.; Legodi, M. J.; Nel, J. M.; Meyer, W. E.; Chawanda, A. [Department of Physics, University of Pretoria, Private Bag X20, Hatfield, 0028 (South Africa)

2011-11-01T23:59:59.000Z

130

Live pathogens: rapid detection technique developed  

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

January » January » Live Pathogens: Rapid Detection Technique Developed Live pathogens: rapid detection technique developed The technique relies on bacteria being critically dependent upon the key nutrient iron. January 24, 2013 Colorized scanning electron micrograph of E. coli. Colorized scanning electron micrograph of E. coli. Photo credit: US Centers for Disease Control and Prevention LANL's new method eliminates the need for laboratory culture and greatly speeds the process. Los Alamos researchers have developed a better technique for quick detection of live pathogens in the field. Identification of viable bacteria in a complex environment is scientifically challenging. Current detection and diagnostic techniques are inadequate in major public health emergencies, such as outbreaks of food-borne illness. Detection of live

131

Definition: Lab Analysis Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Lab Analysis Techniques Jump to: navigation, search Dictionary.png Lab Analysis Techniques Lab Analysis Techniques encompass a broad array of analytical methods that can be used to characterize the chemical and physical properties of rock and fluid samples. The reliability of laboratory analyses depends strongly on both adherence to standard sampling procedures in the field when collecting materials for examination and on the application of appropriate sample preparation techniques in the lab. Ret Like Like You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Lab_Analysis_Techniques&oldid=688298" Category:

132

A laboratory on the four-point probe technique  

Science Journals Connector (OSTI)

We describe how a classic electrostaticsexperiment can be modified to be a four-point probe lab experiment. Students use the four-point probe technique to investigate how the measured resistance varies as a function of the position of the electrodes with respect to the edge of the sample. By using elementary electromagnetism concepts such as the superposition principle the continuity equation the relation between electric field and electric potential and Ohms law a simple model is derived to describe the four-point probe technique. Although the lab introduces the students to the ideas behind the Laplace equation and the methods of images advanced mathematics is avoided so that the experiment can be done in trigonometry and algebra based physics courses. In addition the experiment introduces the students to a standard measurement technique that is widely used in industry and thus provides them with useful hands-on experience.

Andrew P. Schuetze; Wayne Lewis; Chris Brown; Wilhelmus J. Geerts

2004-01-01T23:59:59.000Z

133

Tests validate pipeline sleeve repair technique  

SciTech Connect

The sleeve-on-sleeve pipeline-repair technique is a viable, acceptable means of repairing sleeves and preventing fluid leakage resulting from fracture of cracked fillet welds at the ends of an existing single-layer sleeve. This technique was conceived by Interprovincial Pipe Line Co. as a means of repair for situations in which one or both of the circumferential fillet welds at the ends of an initial repair sleeve may need to be reinforced. It was necessary to determine whether this technique can be employed without serious impairment of the integrity of the pipelines on which it is to be used.

Kiefner, J.F.; Maxey, W.A. (Battelle Memorial Inst., Columbus, OH (USA))

1989-08-28T23:59:59.000Z

134

Power Management Techniques for Data Centers: A Sparsh Mittal  

E-Print Network (OSTI)

of internet and exponential growth in amount of data to be stored and processed (known as "big data, which is 1.5% of all US electricity consumption and has a monetary cost of $4.5 billion [3]. Many dataPower Management Techniques for Data Centers: A Survey Sparsh Mittal Future Technologies Group Oak

135

Applying Speculative Technique to Improve TCP Throughput over Lossy Links  

E-Print Network (OSTI)

, Mohammed Atiquzzaman Honeywell Labs 3660 Technology Drive Minneapolis, MN 55418, USA E-mail: haowei.bai@honeywell #12;Applying Speculative Technique to Improve TCP Throughput over Lossy Links Haowei Bai Honeywell Labs 3660 Technology Drive Minneapolis, MN 55418 haowei.bai@honeywell.com David Lilja Electrical

Minnesota, University of

136

Adaptive Wavelet Quantization Index Modulation Technique for Audio Watermarking  

E-Print Network (OSTI)

Adaptive Wavelet Quantization Index Modulation Technique for Audio Watermarking Jong-Tzy Wang 1 , Ming-Shan Lai2 , Kai-Wen Liang2 , and Pao-Chi Chang2 1 Department of Electrical Engineering, Jin Wen Institute of Technology, Taiwan 2 Department of Communication Engineering, National Central University

Chang, Pao-Chi

137

Airborne electromagnetic surveys as a reconnaissance technique for  

Open Energy Info (EERE)

electromagnetic surveys as a reconnaissance technique for electromagnetic surveys as a reconnaissance technique for geothermal exploration Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Airborne electromagnetic surveys as a reconnaissance technique for geothermal exploration Details Activities (1) Areas (1) Regions (0) Abstract: INPUT airborne electromagnetic (AEM) surveys were conducted during 1979 in five Known Geothermal Resource Areas (KGRA's). AEM work has not been significantly utilized in the past for geothermal purposes because it was thought that a shallow exploration technique would not be effective. Extensive audio-magnetotelluric (AMT) work by the USGS in KGRA's showed that many geothermal systems do have a near-surface electrical signature which should be detectable by an AEM system. INPUT responses in the form of

138

Definition: Active Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Seismic Techniques Seismic Techniques Jump to: navigation, search Dictionary.png Active Seismic Techniques Active seismic techniques study the behavior of artificially-generated elastic waves in the subsurface. A seismic wave or pulse is generated at the surface by an active seismic source which can be a vibration, mechanical impact, or near-surface explosion.[1] View on Wikipedia Wikipedia Definition Seismic waves are waves of energy that travel through the Earth's layers, and are a result of an earthquake, explosion, or a volcano that imparts low-frequency acoustic energy. Many other natural and anthropogenic sources create low amplitude waves commonly referred to as ambient vibrations. Seismic waves are studied by geophysicists called seismologists. Seismic wave fields are recorded by a seismometer,

139

Definition: Downhole Techniques | Open Energy Information  

Open Energy Info (EERE)

Downhole Techniques Downhole Techniques Jump to: navigation, search Dictionary.png Downhole Techniques Downhole techniques are measurements collected from a borehole environment which provide information regarding the character of formations and fluids intersected by a well. These petrophysical data are fundamental to developing the understanding of a geothermal reservoir.[1] View on Wikipedia Wikipedia Definition Petrophysics (from the Greek πέτρα, petra, "rock" and φύσις, physis, "nature") is the study of physical and chemical rock properties and their interactions with fluids. A major application of petrophysics is in studying reservoirs for the hydrocarbon industry. Petrophysicists are employed to help reservoir engineers and geoscientists understand the rock properties of the reservoir, particularly how pores in

140

Definition: Drilling Techniques | Open Energy Information  

Open Energy Info (EERE)

Techniques Techniques Jump to: navigation, search Dictionary.png Drilling Techniques There are a variety of drilling techniques which can be used to sink a borehole into the ground. Each has its advantages and disadvantages, in terms of the depth to which it can drill, the type of sample returned, the costs involved and penetration rates achieved. There are two basic types of drills: drills which produce rock chips, and drills which produce core samples.[1] View on Wikipedia Wikipedia Definition Well drilling is the process of drilling a hole in the ground for the extraction of a natural resource such as ground water, brine, natural gas, or petroleum, for the injection of a fluid from surface to a subsurface reservoir or for subsurface formations evaluation or monitoring.

Note: This page contains sample records for the topic "techniques electrical techniques" 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

NSLS Industrial User Program | Synchrotron Techniques  

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

Synchrotron X-ray Techniques for Industrial Research Synchrotron X-ray Techniques for Industrial Research Techniques http://www.sc.doe.gov/bes/synchrotron_techniques/ Spectroscopy Spectroscopy is used to study the energies of particles emitted or absorbed by samples that are exposed to beam to determine the characteristics of chemical bonding and electron energy band structure. Extended X-Ray Absorption Fine Structure Spectroscopy (EXAFS) X-Ray Absorption Near Edge Spectroscopy (XANES) Hard X-ray Photoelectron Spectroscopy (HAXPES) Scanning X-Ray Microscopy: Micro-XRF, -XAFS, -XRD Soft X-Ray Absorption and Scattering Infrared Vibrational Microspectroscopy Photoemission Electron Microscopy / Low-Energy Electron Microscopy (PEEM/LEEM) Scattering/Diffraction Scattering/diffraction makes use of the patterns of scattered x-rays when

142

A laser speckle based position sensing technique  

E-Print Network (OSTI)

This thesis presents the design and development of a novel laser-speckle-based position sensing technique. In our prototype implementation, a He-Ne laser beam is directed at the surface of an air-bearing spindle. An imaging ...

Shilpiekandula, Vijay, 1979-

2004-01-01T23:59:59.000Z

143

Open-domain textual question answering techniques  

Science Journals Connector (OSTI)

Textual question answering is a technique of extracting a sentence or text snippet from a document or document collection that responds directly to a query. Open-domain textual question answering presupposes that questions are natural and unrestricted ...

Sanda M. Harabagiu; Steven J. Maiorano; Marius A. Pa?ca

2003-09-01T23:59:59.000Z

144

Review of Building Energy Saving Techniques  

E-Print Network (OSTI)

The pace of building energy saving in our country is late, compared with developed countries, and the consumption of building energy is much higher. Therefore, it is imperative to open up new building energy saving techniques and heighten energy use...

Zeng, X.; Zhu, D.

2006-01-01T23:59:59.000Z

145

Internal Benchmarking Outreach and Data Collection Techniques  

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

U.S. Department of Energy (DOE) Technical Assistance Program (TAP) presentation at a TAP webinar held on April 11, 2013 and dealing with internal benchmarking outreach and data collection techniques.

146

Computer Animation: Algorithms and Techniques, 3 edition  

Science Journals Connector (OSTI)

Driven by demand from the entertainment industry for better and more realistic animation, technology continues to evolve and improve. The algorithms and techniques behind this technology are the foundation of this comprehensive book, which is written ...

Rick Parent

2012-10-01T23:59:59.000Z

147

Posters Testing of Newtonian Nudging Technique  

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

7 Posters Testing of Newtonian Nudging Technique in Data Assimilation on the Meso-Beta-Scale Y.-R. Guo and Y.-H. Kuo National Center for Atmospheric Research Boulder, Colorado...

148

Resonant ultrasound spectroscopic techniques for measurement...  

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

sonic ot the elastic moduli. hilt pulc-echo ultrasound and nio4t of the tiotixo- tic technique can mcaut-c all of them. l'hi i not ;I p;trticLtlarl inipc)rtatit...

149

Advanced illumination techniques for GPU volume raycasting  

Science Journals Connector (OSTI)

Volume raycasting techniques are important for both visual arts and visualization. They allow an efficient generation of visual effects and the visualization of scientific data obtained by tomography or numerical simulation. Thanks to their flexibility, ...

Markus Hadwiger; Patric Ljung; Christof Rezk Salama; Timo Ropinski

2008-12-01T23:59:59.000Z

150

A comparison of three deer survey techniques  

E-Print Network (OSTI)

Deer biologists, as with all natural resource managers, need an understanding of the abundance of the resource they are managing to make sound management decisions. The purpose of this study was to evaluate the precision of 3 techniques used...

Rakestraw, Danny Lee

2012-06-07T23:59:59.000Z

151

ECG Feature Extraction Techniques - A Survey Approach  

E-Print Network (OSTI)

ECG Feature Extraction plays a significant role in diagnosing most of the cardiac diseases. One cardiac cycle in an ECG signal consists of the P-QRS-T waves. This feature extraction scheme determines the amplitudes and intervals in the ECG signal for subsequent analysis. The amplitudes and intervals value of P-QRS-T segment determines the functioning of heart of every human. Recently, numerous research and techniques have been developed for analyzing the ECG signal. The proposed schemes were mostly based on Fuzzy Logic Methods, Artificial Neural Networks (ANN), Genetic Algorithm (GA), Support Vector Machines (SVM), and other Signal Analysis techniques. All these techniques and algorithms have their advantages and limitations. This proposed paper discusses various techniques and transformations proposed earlier in literature for extracting feature from an ECG signal. In addition this paper also provides a comparative study of various methods proposed by researchers in extracting the feature from ECG signal.

Karpagachelvi, S; Sivakumar, M

2010-01-01T23:59:59.000Z

152

Systematic Design Assessment Techniques for Solar Buildings  

Science Journals Connector (OSTI)

...Design Assessment Techniques for Solar Buildings J. K. Page G. G. Rodgers C. G. Souster Solar building design involves the systematic study...energy supply and energy demand within buildings. Variations in weather exercise a dominant...

1980-01-01T23:59:59.000Z

153

Data Capture Technique for High Speed Signaling  

DOE Patents (OSTI)

A data capture technique for high speed signaling to allow for optimal sampling of an asynchronous data stream. This technique allows for extremely high data rates and does not require that a clock be sent with the data as is done in source synchronous systems. The present invention also provides a hardware mechanism for automatically adjusting transmission delays for optimal two-bit simultaneous bi-directional (SiBiDi) signaling.

Barrett, Wayne Melvin (Rochester, MN); Chen, Dong (Croton On Hudson, NY); Coteus, Paul William (Yorktwon Heights, NY); Gara, Alan Gene (Mount Kisco, NY); Jackson, Rory (Eastchester, NY); Kopcsay, Gerard Vincent (Yorktown Hieghts, NY); Nathanson, Ben Jesse (Teaneck, NY); Vranas, Paylos Michael (Bedford Hills, NY); Takken, Todd E. (Brewster, NY)

2008-08-26T23:59:59.000Z

154

Cascade Training Technique for Particle Identification  

E-Print Network (OSTI)

The cascade training technique which was developed during our work on the MiniBooNE particle identification has been found to be a very efficient way to improve the selection performance, especially when very low background contamination levels are desired. The detailed description of this technique is presented here based on the MiniBooNE detector Monte Carlo simulations, using both artifical neural networks and boosted decision trees as examples.

Yong Liu; Ion Stancu

2006-11-27T23:59:59.000Z

155

The HIT method: A hazard identification technique  

SciTech Connect

This report explains a technique for analyzing systems and operations to identify hazards and needed controls. The HIT method can be used both as a design tool and as a risk analysis tool. As a design tool, this method identifies requirements for design criteria. As part of a risk analysis effort, HIT identifies potential accident sequences that can become part of the safety analysis documentation. Within this report the HIT method is described in detail with emphasis on application of the technique.

Howard, H.H.; Faust, C.L.

1990-01-01T23:59:59.000Z

156

The piezoelectric sorption technique: a practical method  

E-Print Network (OSTI)

THE PIEZOELECTRIC SORPTION TECHNIQUE, A PRACTICAL METHOD A Thesis by EUGENE CHARLES FLIPSE Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1983...) D. Holland (Head of Department) August 1983 ABSTRACT The Piezoelectric Sorption Technique, A Practical Method. (August 1983) Eugene Charles Flipse, B. A. , Virginia Polytechnic Institute and State University Chairman of Advisory Committee: Dr...

Flipse, Eugene Charles

2012-06-07T23:59:59.000Z

157

Advancing the micro-EDM technique with powder-mixed dielectric and process modelling.  

E-Print Network (OSTI)

??The electrical discharge machining (EDM) process possesses inherent characteristics that make it a promising micro-machining technique. However, micro electrical discharge machining (micro-EDM) is only used (more)

Tan, Michael Peng Cheong.

2011-01-01T23:59:59.000Z

158

A Novel Approach to Build a Generic Model of Photovoltaic Solar System Using Sound Biometric Techniques  

Science Journals Connector (OSTI)

This chapter presents the proposed model of combination between Photovoltaic solar system resources and sound biometric techniques, to generate power energy from the sunlight using the PVS controlled by a sound biometric technique. This work contributes ... Keywords: Electricity Consumption, Energy Conversion, Energy Storage Device, Photovoltaic Solar System (PVS), Sound Recognition Techniques

Khalid T. Al-Sarayreh, Kenza Meridji, Ebaa Fayyoumi, Sahar Idwan

2014-01-01T23:59:59.000Z

159

Category:Electromagnetic Sounding Techniques | Open Energy Information  

Open Energy Info (EERE)

Electromagnetic Sounding Techniques Electromagnetic Sounding Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electromagnetic Sounding Techniques page? For detailed information on Electromagnetic Sounding Techniques, click here. Category:Electromagnetic Sounding Techniques Add.png Add a new Electromagnetic Sounding Techniques Technique Subcategories This category has only the following subcategory. M [×] Magnetotelluric Techniques‎ 1 pages Pages in category "Electromagnetic Sounding Techniques" The following 2 pages are in this category, out of 2 total. M Magnetotelluric Techniques T Time-Domain Electromagnetics Retrieved from "http://en.openei.org/w/index.php?title=Category:Electromagnetic_Sounding_Techniques&oldid=689837"

160

Electric-pulse discharge as a novel technique to synthesize {beta}-SiC nano-crystallites from liquid-phase organic precursors  

SciTech Connect

{beta}-SiC nano-crystallites have been prepared by electric pulses discharged in liquid-phase organic precursors. The composition and crystal structure of the products were characterized by X-ray diffraction, Raman spectroscopy, field emission scanning electronic and transmission electron microscopy. Transmission electron microscopy showed that the sample synthesized from the precursor (hexamethyl disilane) is composed of uniform grains with only 8 nm, while the one synthesize from the other precursor (dimethyl silicone oil) is of better crystalline structure with average grain size 22 nm, which may be attributed to discharge in liquid-phase source and short discharge intervals.

Du Kai [National Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin (China); Yang Haibin [National Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin (China); Institute of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, Henan (China)], E-mail: chinawhirl@hotmail.com; Wei Ronghui; Li Minghui; Yu Qingjiang; Fu Wuyou; Yang Nan; Zhu Hongyang; Zeng Yi [National Laboratory of Superhard Materials, Jilin University, Changchun 130012, Jilin (China)

2008-01-08T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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.
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to obtain the most current and comprehensive results.


161

Definition: Remote Sensing Techniques | Open Energy Information  

Open Energy Info (EERE)

Remote Sensing Techniques Remote Sensing Techniques Jump to: navigation, search Dictionary.png Remote Sensing Techniques Remote sensing utilizes satellite and/or airborne based sensors to collect information about a given object or area. Remote sensing data collection methods can be passive or active. Passive sensors (e.g., spectral imagers) detect natural radiation that is emitted or reflected by the object or area being observed. In active remote sensing (e.g., radar) energy is emitted and the resultant signal that is reflected back is measured.[1] View on Wikipedia Wikipedia Definition Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object. In modern usage, the term generally refers to the use of aerial sensor technologies

162

Definition: Magnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Magnetic Techniques Magnetic Techniques Jump to: navigation, search Dictionary.png Magnetic Techniques The magnetic method is the study of the distribution of magnetic minerals in the upper 20-30km of the earth's crust. The magnetic method may also be used to estimate the thickness of the crust or to constrain temperatures in the crust using the Curie isotherm (the temperatures at which minerals lose their strong magnetic properties), whichever is shallower.[1] References ↑ http://www.ipgp.fr/~diament/Imageries%20Gravi-Mag/Nabighian_etal_Mag.pdf http://www.cflhd.gov/resources/agm/geoApplications/SurfaceMethods/911MagneticMethods.cfm http://onlinelibrary.wiley.com/doi/10.1029/JB087iB06p04846/abstract Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from

163

Aiken Standard: Japanese company learns management techniques from SRNL |  

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

Aiken Standard: Japanese company learns management techniques from Aiken Standard: Japanese company learns management techniques from SRNL Aiken Standard: Japanese company learns management techniques from SRNL January 21, 2013 - 12:00pm Addthis Savannah River National Laboratory scientist Dave Herman (right) discusses waste management equipment during a visit by Japanese scientists involved in the cleanup at Japan's Fukushima nuclear plant. Savannah River National Laboratory scientist Dave Herman (right) discusses waste management equipment during a visit by Japanese scientists involved in the cleanup at Japan's Fukushima nuclear plant. As representatives from Tokyo Electric Power Company visited Aiken, they discussed the efforts they are making to help remediate the damage caused by the worst nuclear accident since the Chernobyl explosion in April 1986.

164

New imaging technique provides improved insight into controlling the plasma  

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

New imaging technique provides improved insight into controlling the plasma New imaging technique provides improved insight into controlling the plasma in fusion experiments By John Greenwald December 9, 2013 Tweet Widget Facebook Like Google Plus One Graphic representation of 2D images of fluctuating electron temperatures in a cross-section of a confined fusion plasma. Graphic representation of 2D images of fluctuating electron temperatures in a cross-section of a confined fusion plasma. A key issue for the development of fusion energy to generate electricity is the ability to confine the superhot, charged plasma gas that fuels fusion reactions in magnetic devices called tokamaks. This gas is subject to instabilities that cause it to leak from the magnetic fields and halt fusion reactions. Now a recently developed imaging technique can help researchers improve

165

New imaging technique provides improved insight into controlling the plasma  

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

New imaging technique provides improved insight into controlling the plasma New imaging technique provides improved insight into controlling the plasma in fusion experiments By John Greenwald December 9, 2013 Tweet Widget Facebook Like Google Plus One Graphic representation of 2D images of fluctuating electron temperatures in a cross-section of a confined fusion plasma. Graphic representation of 2D images of fluctuating electron temperatures in a cross-section of a confined fusion plasma. A key issue for the development of fusion energy to generate electricity is the ability to confine the superhot, charged plasma gas that fuels fusion reactions in magnetic devices called tokamaks. This gas is subject to instabilities that cause it to leak from the magnetic fields and halt fusion reactions. Now a recently developed imaging technique can help researchers improve

166

Analytical Techniques for Characterizing Enzymatic Biofuel Cells  

Science Journals Connector (OSTI)

Analytical Techniques for Characterizing Enzymatic Biofuel Cells ... Most enzymic biofuel cells contain bioanodes with single enzymes to partially oxidize biofuels. ... The citric acid cycle is one of the main metabolic pathways living cells utilize to completely oxidize biofuels to carbon dioxide and water. ...

Michael J. Moehlenbrock; Robert L. Arechederra; Kyle H. Sjholm; Shelley D. Minteer

2009-11-04T23:59:59.000Z

167

NASA/TM--2001210880 Photographic Analysis Technique  

E-Print Network (OSTI)

NASA/TM--2001­210880 Photographic Analysis Technique for Assessing External Tank Foam Loss Events T'Farrell United Space Alliance, Huntsville, Alabama June 2001 #12;Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program

Christian, Eric

168

Spectrum Sensing Techniques in Cognitive Radio Communications  

E-Print Network (OSTI)

1 Spectrum Sensing Techniques in Cognitive Radio Communications Mario Bkassiny*, Yang Li, Georges for CR's. Index Terms-- Cognitive radio, cooperative spectrum sensing, dynamic spectrum access, energy, jayaweera, christos}@ece.unm.edu Abstract-- In this paper, we review some of the recent patents on spectrum

Jayaweera, Sudharman K.

169

Swarming Behavior Using Probabilistic Roadmap Techniques  

E-Print Network (OSTI)

Swarming Behavior Using Probabilistic Roadmap Techniques O. Bur¸chan Bayazit1 , Jyh-Ming Lien2 behaviors: homing, exploring (covering and goal searching), passing through narrow areas and shepherding. We consider several different behaviors: homing, goal searching, covering, passing through narrow passages

Lien, Jyh-Ming

170

Enhancing Compiler Techniques for Memory Energy Optimizations  

E-Print Network (OSTI)

in the total energy consumption equation. 1 Introduction As the market for embedded systems continues to growEnhancing Compiler Techniques for Memory Energy Optimizations Joseph Zambreno1 , Mahmut Taylan Evanston IL 60208, USA {zambro1,choudhar}@ece.northwestern.edu 2 Microsystems Design Lab Pennsylvania State

Kuzmanovic, Aleksandar

171

A Fast Search Technique for Binary Pulsars  

E-Print Network (OSTI)

I describe a computationally simple, efficient, and sensitive method to search long observations for pulsars in binary systems. The technique looks for orbitally induced sidebands in the power spectrum around a nominal spin frequency, enabling it to detect pulsars in high- or low-mass binaries with short orbital periods (P_orb <~ 5 h).

Scott M. Ransom

1999-11-05T23:59:59.000Z

172

Applying Knowledge Management techniques for building corporate  

E-Print Network (OSTI)

Applying Knowledge Management techniques for building corporate memories Ian Watson AI-CBR Computer-based reasoning and knowledge management... www.ai-cbr.org ...coincidentally I've just written a book about this... ...plug the book!!! www.ai-cbr.org Outline · Talk about ­ Knowledge ­ Knowledge management ­ Why CBR

Watson, Ian

173

Spring Semester, Course Title: Scanned Probe Techniques  

E-Print Network (OSTI)

: a fundamental understanding of the theoretical underpinnings behind each scanned probe technique Probe Microscopy: Atomic Scale Engineering by Forces and Currents - Adam Foster and Werner Hofer Applied Scanning Probe Methods (Vol. 1-13) ­ Bharat Bhushan, ed. Springer Handbook of Nanotechnology - Bharat

Sherrill, David

174

e! Science News Semiconductor manufacturing technique holds  

E-Print Network (OSTI)

arsenide chips manufactured in multilayer stacks: light sensors, high-speed transistors and solar cellse! Science News Semiconductor manufacturing technique holds promise for solar energy Published semiconductor manufacturing method pioneered at the University of Illinois, the future of solar energy just got

Rogers, John A.

175

Bornholm Web Mining Techniques rup Nielsen  

E-Print Network (OSTI)

Bornholm Web Mining Techniques Finn A ? rup Nielsen Informatics and Mathematical Modelling; Focused crawling #15; Counting links #15; Size of web-sites #15; PostScript/PDF conversion #15; Generation and Giles, 1998). \\[...] no engine indexes more than about 16% of the web" (Lawrence and Giles, 1999). #15

Nielsen, Finn ?rup

176

Category:Data and Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

and Modeling Techniques and Modeling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Data and Modeling Techniques page? For detailed information on Data and Modeling Techniques as exploration techniques, click here. Category:Data and Modeling Techniques Add.png Add a new Data and Modeling Techniques Technique Subcategories This category has the following 2 subcategories, out of 2 total. D [×] Data Techniques‎ 3 pages M [×] Modeling Techniques‎ 5 pages Pages in category "Data and Modeling Techniques" The following 2 pages are in this category, out of 2 total. D Data Techniques M Modeling Techniques Retrieved from "http://en.openei.org/w/index.php?title=Category:Data_and_Modeling_Techniques&oldid=689801"

177

Property:ExplorationParentTechnique | Open Energy Information  

Open Energy Info (EERE)

orationParentTechnique Property Type Page Description parent technique for organization tree Retrieved from "http:en.openei.orgwindex.php?titleProperty:ExplorationParentTechni...

178

Category:Formation Testing Techniques | Open Energy Information  

Open Energy Info (EERE)

Testing Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Formation Testing Techniques page? For detailed information on...

179

High Througput Combinatorial Techniques in Hydrogen Storage Materials...  

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

High Througput Combinatorial Techniques in Hydrogen Storage Materials R&D Workshop High Througput Combinatorial Techniques in Hydrogen Storage Materials R&D Workshop Summary of the...

180

High-Throughput/Combinatorial Techniques in Hydrogen Storage...  

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

High-ThroughputCombinatorial Techniques in Hydrogen Storage Materials R&D (presentation) High-ThroughputCombinatorial Techniques in Hydrogen Storage Materials R&D (presentation)...

Note: This page contains sample records for the topic "techniques electrical techniques" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


181

Applications of High Energy Ion Beam Techniques in Environmental...  

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

High Energy Ion Beam Techniques in Environmental Science: Investigation Associated with Glass and Ceramic Waste Applications of High Energy Ion Beam Techniques in Environmental...

182

Definition: Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Techniques Techniques Seismic methods provide information regarding the elastic properties of the subsurface through the measurement of the propagation velocity of elastic waves.[1] View on Wikipedia Wikipedia Definition Seismology /saɪzˈmɒlədʒi/ is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies. The field also includes studies of earthquake effects, such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, oceanic, atmospheric, and artificial processes (such as explosions). A related field that uses geology to infer information regarding past earthquakes is paleoseismology. A recording of earth motion as a function of time is called a seismogram. A seismologist

183

Fast Search Techniques for High Energy Pulsars  

E-Print Network (OSTI)

Modified versions of two "standard" pulsar search techniques are presented that allow large-scale searches for pulsations in long duration high-energy data sets using relatively modest amounts of computer time. For small numbers of photons (N_phot <~ 10^4), optimized brute-force epoch folding searches are preferred. For larger numbers of photons, advanced Fourier domain acceleration searches are used. Using these techniques, my collaborators and I have searched Chandra observations of the CasA supernova remnant (SNR) point source and the isolated neutron star RX J1856.5-3754 for pulsations, and confirmed the 65.6 ms pulsar in the 3C 58 SNR during a blind search of archival RXTE data.

Scott M. Ransom

2001-12-01T23:59:59.000Z

184

Modeling techniques for quantum cascade lasers  

E-Print Network (OSTI)

Quantum cascade lasers are unipolar semiconductor lasers covering a wide range of the infrared and terahertz spectrum. Lasing action is achieved by using optical intersubband transitions between quantized states in specifically designed multiple-quantum-well heterostructures. A systematic improvement of quantum cascade lasers with respect to operating temperature, efficiency and spectral range requires detailed modeling of the underlying physical processes in these structures. Moreover, the quantum cascade laser constitutes a versatile model device for the development and improvement of simulation techniques in nano- and optoelectronics. This review provides a comprehensive survey and discussion of the modeling techniques used for the simulation of quantum cascade lasers. The main focus is on the modeling of carrier transport in the nanostructured gain medium, while the simulation of the optical cavity is covered at a more basic level. Specifically, the transfer matrix and finite difference methods for solvin...

Jirauschek, Christian

2014-01-01T23:59:59.000Z

185

Challenges and Techniques for Personal Environment Management  

E-Print Network (OSTI)

, Frank Shipman Committee Members, Richard Furuta John Leggett Stephanie Payne Head of Department, Duncan Walker December 2011 Major Subject: Computer Science iii ABSTRACT Challenges and Techniques for Personal Environment Management.... (December 2011) Anna Zacchi, B.S., University of Milan, Italy; M.S., Texas A&M University Chair of Advisory Committee: Dr. Frank Shipman People today use the computer for many simultaneous work projects and activities. The traditional file system...

Zacchi, Anna 1967-

2011-10-22T23:59:59.000Z

186

Aromatics Extraction Plant Design Using Synthesis Techniques  

E-Print Network (OSTI)

and process modifications can make even larger savings possible. Table 1 summarizes the substantially reduced energy cost as successively more process synthesis techniques were applied. Paybacks are very shorl because the total capital cost remained nearly... utility target multiplied by the cost of hot utility plus the cold utility target multiplied by the cost of cold utility. The annual capital cost target is calculaled as follows: The area target above the pinch is divided by the number of units target...

Wilcox, R. J.; Nedwick, R.

187

A Radiographic Technique With Heavy Ion Microbeams  

SciTech Connect

In this work, we introduce a new technique to perform densitometric and multielemental analysis of samples at the same time using a simple detector with heavy ion micro-beams. It consists in the simultaneous analysis of X-rays induced in the sample and in a secondary target arranged behind the specimen. The X-rays originated in the secondary target are attenuated when crossing the specimen producing a radiographic image with a monochromatic source.

Muscio, J. [ECyT, UNSAM, 1650 San Martin, Buenos Aires (Argentina); Somacal, H.; Burlon, A. A.; Debray, M. E.; Valda, A. A. [ECyT, UNSAM, 1650 San Martin, Buenos Aires (Argentina); U.A. Fisica, Laboratorio TANDAR, CNEA, 1650 San Martin, Buenos Aires (Argentina); Kreiner, A. J. [U.A. Fisica, Laboratorio TANDAR, CNEA, 1650 San Martin, Buenos Aires (Argentina); ECyT, UNSAM, 1650 San Martin, Buenos Aires (Argentina); CONICET (Argentina); Kesque, J. M.; Minsky, D. M. [U.A. Fisica, Laboratorio TANDAR, CNEA, 1650 San Martin, Buenos Aires (Argentina)

2007-02-12T23:59:59.000Z

188

Ultrasonic techniques for process monitoring and control.  

SciTech Connect

Ultrasonic techniques have been applied successfully to process monitoring and control for many industries, such as energy, medical, textile, oil, and material. It helps those industries in quality control, energy efficiency improving, waste reducing, and cost saving. This paper presents four ultrasonic systems, ultrasonic viscometer, on-loom, real-time ultrasonic imaging system, ultrasonic leak detection system, and ultrasonic solid concentration monitoring system, developed at Argonne National Laboratory in the past five years for various applications.

Chien, H.-T.

1999-03-24T23:59:59.000Z

189

Handsets Malware Threats and Facing Techniques  

E-Print Network (OSTI)

Nowadays, mobile handsets combine the functionality of mobile phones and PDAs. Unfortunately, mobile handsets development process has been driven by market demand, focusing on new features and neglecting security. So, it is imperative to study the existing challenges that facing the mobile handsets threat containment process, and the different techniques and methodologies that used to face those challenges and contain the mobile handsets malwares. This paper also presents a new approach to group the different malware containment systems according to their typologies.

Elfattah, Marwa M A; Sarhan, Ebada

2012-01-01T23:59:59.000Z

190

Downhole drilling network using burst modulation techniques  

DOE Patents (OSTI)

A downhole drilling system is disclosed in one aspect of the present invention as including a drill string and a transmission line integrated into the drill string. Multiple network nodes are installed at selected intervals along the drill string and are adapted to communicate with one another through the transmission line. In order to efficiently allocate the available bandwidth, the network nodes are configured to use any of numerous burst modulation techniques to transmit data.

Hall; David R. (Provo, UT), Fox; Joe (Spanish Fork, UT)

2007-04-03T23:59:59.000Z

191

Category:Ground Electromagnetic Techniques | Open Energy Information  

Open Energy Info (EERE)

Ground Electromagnetic Techniques Ground Electromagnetic Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Ground Electromagnetic Techniques page? For detailed information on Ground Electromagnetic Techniques, click here. Category:Ground Electromagnetic Techniques Add.png Add a new Ground Electromagnetic Techniques Technique Subcategories This category has the following 2 subcategories, out of 2 total. E [×] Electromagnetic Profiling Techniques‎ 1 pages [+] Electromagnetic Sounding Techniques‎ (1 categories) 2 pages Pages in category "Ground Electromagnetic Techniques" The following 2 pages are in this category, out of 2 total. E Electromagnetic Profiling Techniques Electromagnetic Sounding Techniques Retrieved from "http://en.openei.org/w/index.php?title=Category:Ground_Electromagnetic_Techniques&oldid=689834"

192

Development of under sodium inspection techniques for FBR  

SciTech Connect

The reactor vessel of a fast breeder reactor (FBR) is filled with opaque liquid sodium and ultrasonic inspection techniques are effective and useful for observing the in-vessel structures under sodium. Firstly, in the development of the under sodium visual inspection technique, the synthetic aperture focusing technique (SAFT) and cross-correlation processing have been applied to realize ultrasonic 3-dimensional cross-correlation image processing with high resolution. Cross-correlation processing improves the S/N ratio of the ultrasonic echoes which are deteriorated by sodium wetting, and realizes high-density integration of the matrix arrayed transducer. Matrix arrayed transducer, in which 100 piezoelectric elements are arranged as a 10 x 10 matrix array, has been manufactured for the in-water visualizing test. Secondly, in the development of the under sodium volumetric inspection technique, a prototype electric scanning UT sensor has been developed for the volumetric test of the core support structures in the reactor vessel. The UT sensor consists of 60 arrayed piezoelectric elements, non-organic materials such as ceramic backing. Ultrasonic echoes transmitted from the elements is scanned electronically and real-time B-scope images of the structures can be realized. A prototype UT sensor has been tested to evaluate the acoustic characteristics in water and confirm the heat-proof performance under high temperature silicon oil. The performance of the UT sensor satisfied the requirements.

Karasawa, H.; Suzuki, T.; Nagai, S.; Izumi, M.; Kobayashi, T. [Toshiba Corp., Yokohama (Japan); Sasaki, S.; Ota, S.; Kai, M. [Japan Atomic Power Co., Tokyo (Japan)

1996-08-01T23:59:59.000Z

193

Category:Borehole Seismic Techniques | Open Energy Information  

Open Energy Info (EERE)

Borehole Seismic Techniques page? Borehole Seismic Techniques page? For detailed information on Borehole Seismic Techniques as exploration techniques, click here. Category:Borehole Seismic Techniques Add.png Add a new Borehole Seismic Techniques Technique Pages in category "Borehole Seismic Techniques" The following 2 pages are in this category, out of 2 total. S Single-Well And Cross-Well Seismic V Vertical Seismic Profiling Retrieved from "http://en.openei.org/w/index.php?title=Category:Borehole_Seismic_Techniques&oldid=601962" Category: Downhole Techniques What links here Related changes Special pages Printable version Permanent link Browse properties About us Disclaimers Energy blogs Linked Data Developer services OpenEI partners with a broad range of international organizations to grow

194

Geologic flow characterization using tracer techniques  

SciTech Connect

A new tracer flow-test system has been developed for in situ characterization of geologic formations. This report describes two sets of test equipment: one portable and one for testing in deep formations. Equations are derived for in situ detector calibration, raw data reduction, and flow logging. Data analysis techniques are presented for computing porosity and permeability in unconfined isotropic media, and porosity, permeability and fracture characteristics in media with confined or unconfined two-dimensional flow. The effects of tracer pulse spreading due to divergence, dispersion, and porous formations are also included.

Klett, R. D.; Tyner, C. E.; Hertel, Jr., E. S.

1981-04-01T23:59:59.000Z

195

Streamer branching rationalized by conformal mapping techniques  

Science Journals Connector (OSTI)

Spontaneous branching of discharge channels is frequently observed, but not well understood. We recently proposed a new branching mechanism based on simulations of a simple continuous discharge model in high fields. We here present analytical results for such streamers in the Lozansky-Firsov limit where they can be modeled as moving equipotential ionization fronts. This model can be analyzed by conformal mapping techniques which allow the reduction of the dynamical problem to finite sets of nonlinear ordinary differential equations. Our solutions illustrate that branching is generic for the intricate head dynamics of streamers in the Lozansky-Firsov limit.

Bernard Meulenbroek, Andrea Rocco, and Ute Ebert

2004-06-17T23:59:59.000Z

196

Characterization of microstructure with low frequency electromagnetic techniques  

SciTech Connect

A new computational method for characterizing the relationship between surface crystallography and electrical conductivity in anisotropic materials with low frequency electromagnetic techniques is presented. The method is discussed from the standpoint of characterizing the orientation of a single grain, as well as characterizing statistical information about grain ensembles in the microstructure. Large-area electron backscatter diffraction (EBSD) data was obtained and used in conjunction with a synthetic aperture approach to simulate the eddy current response of beta annealed Ti-6Al-4V. Experimental eddy current results are compared to the computed eddy current approximations based on electron backscatter diffraction (EBSD) data, demonstrating good agreement. The detectability of notches in the presence of noise from microstructure is analyzed with the described simulation method and advantages and limitations of this method are discussed relative to other NDE techniques for such analysis.

Cherry, Matthew R.; Sathish, Shamachary [University of Dayton Research Institute, Structural Integrity Division, 300 College Park, Dayton, OH 45469-0020 (United States); Pilchak, Adam L.; Blodgett, Mark P. [Air Force Research Laboratory, Materials and Manufacturing Directorate (AFRL/RXCM), 2230 10th St., WPAFB, OH 45433 (United States); Cherry, Aaron J. [Southwest Ohio Council for Higher Education, 3155 Research Blvd., Suite 204, Dayton, OH 45420-4015 (United States)

2014-02-18T23:59:59.000Z

197

Laser techniques for studying chemical vapor deposition  

SciTech Connect

Chemical vapor deposition (CVD) is widely used to produce thin films for microelectronics, protective coatings and other materials processing applications. Despite the large number of applications, however, little is known about the fundamental chemistry and physics of most CVD processes. CVD recipes have generally been determined empirically, but as process requirements become more stringent, a more basic understanding will be needed to improve reactor design and speed process optimization. In situ measurements of the reacting gas are important steps toward gaining such an understanding, both from the standpoint of characterizing the reactor and testing models of a CVD process. Our work, a coordinated program of experimental and theoretical research in the fundamental mechanisms of CVD, illustrates the application of laser techniques to the understanding of a CVD system. We have used a number of laser-based techniques to probe CVD systems and have compared our measurements with predictions from computer models, primarily for the silane CVD system. The silane CVD model solves the two-dimensional, steady-state boundary layer equations of fluid flow coupled to 26 elementary chemical reactions describing the thermal decomposition of silane and the subsequent reactions of intermediate species that result in the deposition of a silicon film.

Ho, P.; Breiland, W.G.; Coltrin, M.E.

1990-01-01T23:59:59.000Z

198

Low energy neutral atom imaging techniques  

SciTech Connect

The potential scientific return from low energy neutral atom (LENA) imaging of the magnetosphere is extraordinary. The technical challenges of LENA detection include (1) removal of LENAs from the tremendous ambient UV without losing information of their incident trajectories, (2) quantification of their trajectories, and (3) obtaining high sensitivity measurements. Two techniques that have been proposed for this purpose are based on fundamentally different atomic interaction mechanisms between LENAs and a solid: LENA transmission through an ultrathin foil and LENA reflection from a solid surface. Both of these methods provide LENA ionization (for subsequent removal from the UV by electrostatic deflection) and secondary electron emission (for start pulse generation for time-of-flight and/or coincidence). We present a comparative study of the transmission and reflection techniques based on differences in atomic interactions with solids and surfaces. We show that transmission methods yield an order of magnitude greater secondary electron emission than reflection methods. Transmission methods are shown to be sufficient for LENA energies of approximately 1 keV to greater than 30 keV. Reflection methods using low work function surfaces could be employed for LENA ionization for energies less than several keV.

Funsten, H.O. McComas, D.J.; Scime, E.E.

1993-01-01T23:59:59.000Z

199

Uncertainty Analysis Technique for OMEGA Dante Measurements  

SciTech Connect

The Dante is an 18 channel X-ray filtered diode array which records the spectrally and temporally resolved radiation flux from various targets (e.g. hohlraums, etc.) at X-ray energies between 50 eV to 10 keV. It is a main diagnostics installed on the OMEGA laser facility at the Laboratory for Laser Energetics, University of Rochester. The absolute flux is determined from the photometric calibration of the X-ray diodes, filters and mirrors and an unfold algorithm. Understanding the errors on this absolute measurement is critical for understanding hohlraum energetic physics. We present a new method for quantifying the uncertainties on the determined flux using a Monte-Carlo parameter variation technique. This technique combines the uncertainties in both the unfold algorithm and the error from the absolute calibration of each channel into a one sigma Gaussian error function. One thousand test voltage sets are created using these error functions and processed by the unfold algorithm to produce individual spectra and fluxes. Statistical methods are applied to the resultant set of fluxes to estimate error bars on the measurements.

May, M J; Widmann, K; Sorce, C; Park, H; Schneider, M

2010-05-07T23:59:59.000Z

200

Shadowgraph illumination techniques for framing cameras  

SciTech Connect

Many pulse power applications in use at the Pegasus facility at the Los Alamos National Laboratory require specialized imaging techniques. Due to the short event duration times, visible images are recorded by high-speed electronic framing cameras. Framing cameras provide the advantages of high speed movies of back light experiments. These high-speed framing cameras require bright illumination sources to record images with 10 ns integration times. High-power lasers offer sufficient light for back illuminating the target assemblies; however, laser speckle noise lowers the contrast in the image. Laser speckle noise also limits the effective resolution. This discussion focuses on the use of telescopes to collect images 50 feet away. Both light field and dark field illumination techniques are compared. By adding relay lenses between the assembly target and the telescope, a high-resolution magnified image can be recorded. For dark field illumination, these relay lenses can be used to separate the object field from the illumination laser. The illumination laser can be made to focus onto the opaque secondary of a Schmidt telescope. Thus, the telescope only collects scattered light from the target assembly. This dark field illumination eliminates the laser speckle noise and allows high-resolution images to be recorded. Using the secondary of the telescope to block the illumination laser makes dark field illumination an ideal choice for the framing camera.

Malone, R.M.; Flurer, R.L.; Frogget, B.C. [Bechtel Nevada, Los Alamos, NM (United States). Los Alamos Operations; Sorenson, D.S.; Holmes, V.H.; Obst, A.W. [Los Alamos National Lab., NM (United States)

1997-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Self-Assembly Techniques for Massively Parallel Packaging of MEMS Devices  

E-Print Network (OSTI)

Self-Assembly Techniques for Massively Parallel Packaging of MEMS Devices Jiandong Fang-1346, or to the author. Signature Date July 31, 2006 #12;#12;University of Washington Abstract Self-Assembly Techniques. B¨ohringer Electrical Engineering This dissertation investigates applications of self-assembly

202

Evaluation of energy system analysis techniques for identifying underground facilities  

SciTech Connect

This report describes the results of a study to determine the feasibility and potential usefulness of applying energy system analysis techniques to help detect and characterize underground facilities that could be used for clandestine activities. Four off-the-shelf energy system modeling tools were considered: (1) ENPEP (Energy and Power Evaluation Program) - a total energy system supply/demand model, (2) ICARUS (Investigation of Costs and Reliability in Utility Systems) - an electric utility system dispatching (or production cost and reliability) model, (3) SMN (Spot Market Network) - an aggregate electric power transmission network model, and (4) PECO/LF (Philadelphia Electric Company/Load Flow) - a detailed electricity load flow model. For the purposes of most of this work, underground facilities were assumed to consume about 500 kW to 3 MW of electricity. For some of the work, facilities as large as 10-20 MW were considered. The analysis of each model was conducted in three stages: data evaluation, base-case analysis, and comparative case analysis. For ENPEP and ICARUS, open source data from Pakistan were used for the evaluations. For SMN and PECO/LF, the country data were not readily available, so data for the state of Arizona were used to test the general concept.

VanKuiken, J.C.; Kavicky, J.A.; Portante, E.C. [and others

1996-03-01T23:59:59.000Z

203

Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Techniques for Drivers Techniques for Drivers to Conserve Fuel to someone by E-mail Share Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Facebook Tweet about Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Twitter Bookmark Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Google Bookmark Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Delicious Rank Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on Digg Find More places to share Alternative Fuels Data Center: Techniques for Drivers to Conserve Fuel on AddThis.com... More in this section... Idle Reduction Parts & Equipment Maintenance Driving Behavior Management Strategies Driver Techniques Fleet Rightsizing

204

Category:Remote Sensing Techniques | Open Energy Information  

Open Energy Info (EERE)

Remote Sensing Techniques Remote Sensing Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Remote Sensing Techniques page? For detailed information on remote sensing techniques used as a geothermal exploration technique, click here. Category: Remote Sensing Techniques Add.png Add a new Remote Sensing Technique Subcategories This category has the following 2 subcategories, out of 2 total. A [+] Active Sensors‎ (1 categories) 2 pages P [×] Passive Sensors‎ 13 pages Pages in category "Remote Sensing Techniques" The following 2 pages are in this category, out of 2 total. A Active Sensors L Long-Wave Infrared Retrieved from "http://en.openei.org/w/index.php?title=Category:Remote_Sensing_Techniques&oldid=594055"

205

High energy heavy ions: techniques and applications  

SciTech Connect

Pioneering work at the Bevalac has given significant insight into the field of relativistic heavy ions, both in the development of techniques for acceleration and delivery of these beams as well as in many novel areas of applications. This paper will outline our experiences at the Bevalac; ion sources, low velocity acceleration, matching to the synchrotron booster, and beam delivery. Applications discussed will include the observation of new effects in central nuclear collisions, production of beams of exotic short-lived (down to 1 ..mu..sec) isotopes through peripheral nuclear collisions, atomic physics with hydrogen-like uranium ions, effects of heavy ''cosmic rays'' on satellite equipment, and an ongoing cancer radiotherapy program with heavy ions. 39 refs., 6 figs., 1 tab.

Alonso, J.R.

1985-04-01T23:59:59.000Z

206

Physical protection philosophy and techniques in Sweden  

SciTech Connect

The circumstances for the protection of nuclear power plants are special in Sweden. A very important factor is that armed guards at the facilities are alien to the Swedish society. They do not use them. The Swedish concept of physical protection accepts that the aggressor will get into the facility. With this in mind, the Swedish Nuclear Power Inspectorate (SKI) has established the policy that administrative, technical, and organizational measures will be directed toward preventing an aggressor from damaging the reactor, even if he has occupied the facility. In addition, the best conditions possible shall be established for the operator and the police to reoccupy the plant. The author believes this policy is different from that of many other countries. Therefore, he focusses on the Swedish philosophy and techniques for the physical protection of nuclear power plants.

Dufva, B.

1988-01-01T23:59:59.000Z

207

Technique for ship/wake detection  

DOE Patents (OSTI)

An automated ship detection technique includes accessing data associated with an image of a portion of Earth. The data includes reflectance values. A first portion of pixels within the image are masked with a cloud and land mask based on spectral flatness of the reflectance values associated with the pixels. A given pixel selected from the first portion of pixels is unmasked when a threshold number of localized pixels surrounding the given pixel are not masked by the cloud and land mask. A spatial variability image is generated based on spatial derivatives of the reflectance values of the pixels which remain unmasked by the cloud and land mask. The spatial variability image is thresholded to identify one or more regions within the image as possible ship detection regions.

Roskovensky, John K. (Albuquerque, NM)

2012-05-01T23:59:59.000Z

208

Techniques for Intravascular Foreign Body Retrieval  

SciTech Connect

As endovascular therapies increase in frequency, the incidence of lost or embolized foreign bodies is increasing. The presence of an intravascular foreign body (IFB) is well recognized to have the potential to cause serious complications. IFB can embolize and impact critical sites such as the heart, with subsequent significant morbidity or mortality. Intravascular foreign bodies most commonly result from embolized central line fragments, but they can originate from many sources, both iatrogenic and noniatrogenic. The percutaneous approach in removing an IFB is widely perceived as the best way to retrieve endovascular foreign bodies. This minimally invasive approach has a high success rate with a low associated morbidity, and it avoids the complications related to open surgical approaches. We examined the characteristics, causes, and incidence of endovascular embolizations and reviewed the various described techniques that have been used to facilitate subsequent explantation of such materials.

Woodhouse, Joe B.; Uberoi, Raman, E-mail: raman.uberoi@orh.nhs.uk [Oxford University Hospitals (United Kingdom)

2013-08-01T23:59:59.000Z

209

Function Analysis and Decomposistion using Function Analysis Systems Technique  

SciTech Connect

The "Father of Value Analysis", Lawrence D. Miles, was a design engineer for General Electric in Schenectady, New York. Miles developed the concept of function analysis to address difficulties in satisfying the requirements to fill shortages of high demand manufactured parts and electrical components during World War II. His concept of function analysis was further developed in the 1960s by Charles W. Bytheway, a design engineer at Sperry Univac in Salt Lake City, Utah. Charles Bytheway extended Mile's function analysis concepts and introduced the methodology called Function Analysis Systems Technique (FAST) to the Society of American Value Engineers (SAVE) at their International Convention in 1965 (Bytheway 1965). FAST uses intuitive logic to decompose a high level, or objective function into secondary and lower level functions that are displayed in a logic diagram called a FAST model. Other techniques can then be applied to allocate functions to components, individuals, processes, or other entities that accomplish the functions. FAST is best applied in a team setting and proves to be an effective methodology for functional decomposition, allocation, and alternative development.

Wixson, James Robert

1999-06-01T23:59:59.000Z

210

Function Analysis and Decomposistion using Function Analysis Systems Technique  

SciTech Connect

The "Father of Value Analysis", Lawrence D. Miles, was a design engineer for General Electric in Schenectady, New York. Miles developed the concept of function analysis to address difficulties in satisfying the requirements to fill shortages of high demand manufactured parts and electrical components during World War II. His concept of function analysis was further developed in the 1960s by Charles W. Bytheway, a design engineer at Sperry Univac in Salt Lake City, Utah. Charles Bytheway extended Mile's function analysis concepts and introduced the methodology called Function Analysis Systems Techniques (FAST) to the Society of American Value Engineers (SAVE) at their International Convention in 1965 (Bytheway 1965). FAST uses intuitive logic to decompose a high level, or objective function into secondary and lower level functions that are displayed in a logic diagram called a FAST model. Other techniques can then be applied to allocate functions to components, individuals, processes, or other entities that accomplish the functions. FAST is best applied in a team setting and proves to be an effective methodology for functional decomposition, allocation, and alternative development.

J. R. Wixson

1999-06-01T23:59:59.000Z

211

Category:Well Log Techniques | Open Energy Information  

Open Energy Info (EERE)

Category Category Edit History Facebook icon Twitter icon » Category:Well Log Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Well Log Techniques page? For detailed information on Well Log Techniques as exploration techniques, click here. Category:Well Log Techniques Add.png Add a new Well Log Techniques Technique Pages in category "Well Log Techniques" The following 17 pages are in this category, out of 17 total. A Acoustic Logs C Caliper Log Cement Bond Log Chemical Logging Cross-Dipole Acoustic Log D Density Log F FMI Log G Gamma Log I Image Logs M Mud Logging N Neutron Log P Pressure Temperature Log R Resistivity Log Resistivity Tomography S Single-Well and Cross-Well Resistivity Spontaneous Potential Well Log Stoneley Analysis

212

Category:Electromagnetic Profiling Techniques | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Category Edit History Facebook icon Twitter icon » Category:Electromagnetic Profiling Techniques Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Electromagnetic Profiling Techniques page? For detailed information on Electromagnetic Profiling Techniques, click here. Category:Electromagnetic Profiling Techniques Add.png Add a new Electromagnetic Profiling Techniques Technique Pages in category "Electromagnetic Profiling Techniques" This category contains only the following page. F Frequency-Domain Electromagnetic Survey Retrieved from "http://en.openei.org/w/index.php?title=Category:Electromagnetic_Profiling_Techniques&oldid=689835"

213

Laser-Based Deposition Technique: Patterning Nanoparticles into Microstructures  

E-Print Network (OSTI)

Laser-Based Deposition Technique: Patterning Nanoparticles into Microstructures Edward M. Nadgorny Jaroslaw Drelich Michigan Technological University, Houghton, Michigan, U.S.A. INTRODUCTION The laser- tions of unlike materials, and unconventional substrates. The technique makes use of laser

Drelich, Jaroslaw W.

214

Biophysical modeling of hemodynamic-based neuroimaging techniques  

E-Print Network (OSTI)

Two different hemodynamic-based neuroimaging techniques were studied in this work. Near-Infrared Spectroscopy (NIRS) is a promising technique to measure cerebral hemodynamics in a clinical setting due to its potential for ...

Gagnon, Louis, 1984-

2013-01-01T23:59:59.000Z

215

Evaluation of a New Ramping Technique for Duct Leakage Testing  

E-Print Network (OSTI)

1 LBNL-61743 Evaluation of a New Ramping Technique for Duct Leakage Testing Iain S. Walker ramping Technique for Duct Leakage Testing Table of contents Introduction......................................................................................................................... 3 DeltaQ ramping testing

216

Techniques for spot microsampling and analysis of corrosion site fluid  

SciTech Connect

This paper presents techniques for the extraction and analysis of crevice fluid microsamples. Results are presented from ambient temperature benchtop proof-of-principle testing with the spot microsample extraction technique and from the high temperature test method.

Lynch, Garry J.; Niehaus, William C.

1999-02-01T23:59:59.000Z

217

Scenario Technique with Integer Programming for Sustainability in Manufacturing  

Science Journals Connector (OSTI)

Scenario technique is a tool to reveal the knowledge of an expert group about possible and consistent scenarios of the future. The current use of this technique suffers from an inflexibility of the available s...

Armin Fgenschuh; Pia Gausemeier

2010-01-01T23:59:59.000Z

218

Advanced illumination techniques for GPU-based volume raycasting  

Science Journals Connector (OSTI)

Volume raycasting techniques are important for both visual arts and visualization. They allow efficient generation of visual effects and visualization of scientific data obtained by tomography or numerical simulation. Volume-rendering techniques are ...

Markus Hadwiger; Patric Ljung; Christof Rezk Salama; Timo Ropinski

2009-08-01T23:59:59.000Z

219

Liquid-Phase Combinatorial Synthesis Technique Could Ease Automation  

Science Journals Connector (OSTI)

A liquid-phase combinatorial synthesis technique developed by researchers at Scripps Research Institute, La Jolla, Calif., could provide advantages over existing solid-phase technology and ease automation of combinatorial techniques.Combinatorial ...

STU BORMAN

1995-07-31T23:59:59.000Z

220

Efficient modeling techniques for atomistic-based electronic density calculations  

Science Journals Connector (OSTI)

This paper presents an effective combination of various modeling and numerical techniques for enabling fast large-scale first-principle electronic density calculations. Areal-space mesh technique framework is...

Deyin Zhang; Eric Polizzi

2008-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Waveform Relaxation Technique for Longitudinal Partitioning of Transmission Lines  

E-Print Network (OSTI)

Waveform Relaxation Technique for Longitudinal Partitioning of Transmission Lines Martin Gander problem for multiple coupled transmission lines by a so-called transverse partitioning technique. The WR mode transmission line problems. Previous longitudinal partitioning work using the classical WR

Gander, Martin J.

222

Some applications of pipelining techniques in parallel scientific computing  

E-Print Network (OSTI)

In this thesis, we study the applicability of pipelining techniques to the development of parallel algorithms for scientific computation. General principles for pipelining techniques are discussed and two applications, Gram-Schmidt orthogonalization...

Deng, Yuanhua

2012-06-07T23:59:59.000Z

223

Challenge Paper: Validation of Forensic Techniques for Criminal Prosecution  

E-Print Network (OSTI)

Challenge Paper: Validation of Forensic Techniques for Criminal Prosecution Robert F. Erbacher that digital forensics analysts would benefit from the extension, development and application of advanced techniques in performing large scale and heterogeneous data analysis. Modern digital forensics analysis

Erbacher, Robert F.

224

Benchmarking Outreach and Data Collection Techniques for External Portfolios  

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

This document contains the transcript for the Benchmarking Outreach and Data Collection Techniques webinar, held on April 25, 2013.

225

OptimizingResourceUtilizationandTestability Using Hot Potato Techniques  

E-Print Network (OSTI)

OptimizingResourceUtilizationandTestability Using Hot Potato Techniques Miodrag Potkonjak Sujit Dey C&C Research Laboratories, NEC USA, Princeton, NJ 08540 ABSTRACT This paper introduces hot potato reduced using new technique. It is also dem- onstrated how hot potato techniques can be effectively used

Potkonjak, Miodrag

226

Preparation of actinide metal targets using special casting techniques  

Science Journals Connector (OSTI)

Various casting techniques and mold design have been evaluated at Rocky Flats for preparing actinide metal targets. A tilt-pour casting technique is used for targets > 0.040 in. thick, and an injection casting technique has been developed for targets neptunium, and uranium metal ingots and disks ranging from 0.0050.600 in. thickness have been cast.

W.V. Conner

1972-01-01T23:59:59.000Z

227

NDA safeguards techniques for LMFBR assemblies  

SciTech Connect

The significant safeguards concerns for liquid-metal fast breeder reactors (LMFBRs), and for the LMFBR fuel handling systems are the accountability, surveillance, and identification of fuel and blanket assemblies. The introduction of fuel assemblies with a high content of Pu into the receiving and shipping areas of the LMFBR fuel cycle does allow a more direct near-real-time assay profile of the disposition of Pu. Isotope correlations and neutron assay methods have been investigated and implemented for determining plutonium and burnup in fresh and spent LMFBR fuel assemblies. The methods are based on active and passive neutron coincidence counting (NCC) techniques. Preliminary studies on neutron yield rates from the spontaneous fission of plutonium and curium isotopes have indicated that the NCC system is a most effective measure in the verification of nuclear material flow in assembly form for the entire reactor fuel handling cycle, i.e., from the fresh- to the spent-fuel stage. A consequence of the high plutonium concentration level throughout the fuel irradiation period in an LMFBR, is that the spontaneous fission neutron yield from the 242-curium and 244-curium does not dominate the spontaneous fission neutron yield from the plutonium isotopes in the spent fuel stage.

Persiani, P.J.; Gundy, M.L.

1982-08-01T23:59:59.000Z

228

Compensation techniques in NIRS proton beam radiotherapy  

SciTech Connect

Proton beam has the dose distribution advantage in radiation therapy, although it has little advantage in biological effects. One of the best advantages is its sharp fall off of dose after the peak. With proton beam, therefore, the dose can be given just to cover a target volume and potentially no dose is delivered thereafter in the beam direction. To utilize this advantage, bolus techniques in conjunction with CT scanning are employed in NIRS proton beam radiation therapy planning. A patient receives CT scanning first so that the target volume can be clearly marked and the radiation direction and fixation method can be determined. At the same time bolus dimensions are calculated. The bolus frames are made with dental paraffin sheets according to the dimensions. The paraffin frame is replaced with dental resin. Alginate (a dental impression material with favorable physical density and skin surface contact) is now employed for the bolus material. With fixation device and bolus on, which are constructed individually, the patient receives CT scanning again prior to a proton beam treatment in order to prove the devices are suitable. Alginate has to be poured into the frame right before each treatments. Further investigations are required to find better bolus materials and easier construction methods.

Akanuma, A. (Univ. of Tokyo, Japan); Majima, H.; Furukawa, S.

1982-09-01T23:59:59.000Z

229

Advanced Techniques for Power System Identification from Measured Data  

SciTech Connect

Time-synchronized measurements provide rich information for estimating a power-system's electromechanical modal properties via advanced signal processing. This information is becoming critical for the improved operational reliability of interconnected grids. A given mode's properties are described by its frequency, damping, and shape. Modal frequencies and damping are useful indicators of power-system stress, usually declining with increased load or reduced grid capacity. Mode shape provides critical information for operational control actions. This project investigated many advanced techniques for power system identification from measured data focusing on mode frequency and damping ratio estimation. Investigators from the three universities coordinated their effort with Pacific Northwest National Laboratory (PNNL). Significant progress was made on developing appropriate techniques for system identification with confidence intervals and testing those techniques on field measured data and through simulation. Experimental data from the western area power system was provided by PNNL and Bonneville Power Administration (BPA) for both ambient conditions and for signal injection tests. Three large-scale tests were conducted for the western area in 2005 and 2006. Measured field PMU (Phasor Measurement Unit) data was provided to the three universities. A 19-machine simulation model was enhanced for testing the system identification algorithms. Extensive simulations were run with this model to test the performance of the algorithms. University of Wyoming researchers participated in four primary activities: (1) Block and adaptive processing techniques for mode estimation from ambient signals and probing signals, (2) confidence interval estimation, (3) probing signal design and injection method analysis, and (4) performance assessment and validation from simulated and field measured data. Subspace based methods have been use to improve previous results from block processing techniques. Bootstrap techniques have been developed to estimate confidence intervals for the electromechanical modes from field measured data. Results were obtained using injected signal data provided by BPA. A new probing signal was designed that puts more strength into the signal for a given maximum peak to peak swing. Further simulations were conducted on a model based on measured data and with the modifications of the 19-machine simulation model. Montana Tech researchers participated in two primary activities: (1) continued development of the 19-machine simulation test system to include a DC line; and (2) extensive simulation analysis of the various system identification algorithms and bootstrap techniques using the 19 machine model. Researchers at the University of Alaska-Fairbanks focused on the development and testing of adaptive filter algorithms for mode estimation using data generated from simulation models and on data provided in collaboration with BPA and PNNL. There efforts consist of pre-processing field data, testing and refining adaptive filter techniques (specifically the Least Mean Squares (LMS), the Adaptive Step-size LMS (ASLMS), and Error Tracking (ET) algorithms). They also improved convergence of the adaptive algorithms by using an initial estimate from block processing AR method to initialize the weight vector for LMS. Extensive testing was performed on simulated data from the 19 machine model. This project was also extensively involved in the WECC (Western Electricity Coordinating Council) system wide tests carried out in 2005 and 2006. These tests involved injecting known probing signals into the western power grid. One of the primary goals of these tests was the reliable estimation of electromechanical mode properties from measured PMU data. Applied to the system were three types of probing inputs: (1) activation of the Chief Joseph Dynamic Brake, (2) mid-level probing at the Pacific DC Intertie (PDCI), and (3) low-level probing on the PDCI. The Chief Joseph Dynamic Brake is a 1400 MW disturbance to the system and is injected for a ha

Pierre, John W.; Wies, Richard; Trudnowski, Daniel

2008-11-25T23:59:59.000Z

230

Digital I and C system upgrade integration technique  

SciTech Connect

This work developed an integration technique for digital I and C system upgrade, the utility can replace the I and C systems step by step systematically by this method. Inst. of Nuclear Energy Research (INER) developed a digital Instrumentation and Control (I and C) replacement integration technique on the basis of requirement of the three existing nuclear power plants (NPPs), which are Chin-Shan (CS) NPP, Kuo-Sheng (KS) NPP, and Maanshan (MS) NPP, in Taiwan, and also developed the related Critical Digital Review (CDR) Procedure. The digital I and C replacement integration technique includes: (I) Establishment of Nuclear Power Plant Digital Replacement Integration Guideline, (2) Preliminary Investigation on I and C System Digitalization, (3) Evaluation on I and C System Digitalization, and (4) Establishment of I and C System Digitalization Architectures. These works can be a reference for performing I and C system digital replacement integration of the three existing NPPs of Taiwan Power Company (TPC). A CDR is the review for a critical system digital I and C replacement. The major reference of this procedure is EPRI TR- 1011710 (2005) 'Handbook for Evaluating Critical Digital Equipment and Systems' which was published by the Electric Power Research Inst. (EPRI). With this document, INER developed a TPC-specific CDR procedure. Currently, CDR becomes one of the policies for digital I and C replacement in TPC. The contents of this CDR procedure include: Scope, Responsibility, Operation Procedure, Operation Flow Chart, CDR review items. The CDR review items include the comparison of the design change, Software Verification and Validation (SVandV), Failure Mode and Effects Analysis (FMEA), Evaluation of Diversity and Defense-in-depth (D3), Evaluation of Watchdog Timer, Evaluation of Electromagnetic Compatibility (EMC), Evaluation of Grounding for System/Component, Seismic Evaluation, Witness and Inspection, Lessons Learnt from the Digital I and C Failure Events. A solid review can assure the quality of the digital I and C system replacement. (authors)

Huang, H. W. [Inst. of Nuclear Energy Research (INER), No. 1000, Wenhua Road, Chiaan Village, Longtan Township, Taoyuan County, 32546, Taiwan (China); Shih, C. [Inst. of Nuclear Engineering and Science, National Tsing Hua Univ., 101, Sec. 2, Kuang Fu Rd, Hsinchu, Taiwan (China); Wang, J. R. [Inst. of Nuclear Energy Research (INER), No. 1000, Wenhua Road, Chiaan Village, Longtan Township, Taoyuan County, 32546, Taiwan (China); Huang, K. C. [Inst. of Nuclear Engineering and Science, National Tsing Hua Univ., 101, Sec. 2, Kuang Fu Rd, Hsinchu, Taiwan (China)

2012-07-01T23:59:59.000Z

231

Similarity Matching Techniques for Fault Diagnosis in Automotive Infotainment Electronics  

E-Print Network (OSTI)

Fault diagnosis has become a very important area of research during the last decade due to the advancement of mechanical and electrical systems in industries. The automobile is a crucial field where fault diagnosis is given a special attention. Due to the increasing complexity and newly added features in vehicles, a comprehensive study has to be performed in order to achieve an appropriate diagnosis model. A diagnosis system is capable of identifying the faults of a system by investigating the observable effects (or symptoms). The system categorizes the fault into a diagnosis class and identifies a probable cause based on the supplied fault symptoms. Fault categorization and identification are done using similarity matching techniques. The development of diagnosis classes is done by making use of previous experience, knowledge or information within an application area. The necessary information used may come from several sources of knowledge, such as from system analysis. In this paper similarity matching tec...

Kabir, Mashud

2009-01-01T23:59:59.000Z

232

"Integration optimization and stochastic modeling techniques in  

E-Print Network (OSTI)

objectives of energy policy. The intermittent nature of renewables, such as wind and solar, necessarily the basis for implementing a distributed approach. However, this requires a degree of coordination across: Energy Increasing electric power production from renewable energy sources is currently one of the major

Acton, Scott

233

Comparative Statistical Techniques in Maintenance Management  

Science Journals Connector (OSTI)

......times written as tt general, due to possible failure ties...Both can be expressed by the general formula for linear rank statistics...intensively used passenger diesel-electric locomotives. The type I overhaul consists of the engine's removal from the traction......

G. A. BOHORIS; D. M. WALLEY

1991-01-01T23:59:59.000Z

234

Background field method: Alternative way of deriving the pinch techniques results  

Science Journals Connector (OSTI)

We show that the background field method (BFM) is a simple way of deriving the same gauge-invariant results which are obtained by the pinch technique (PT). For illustration we construct gauge-invariant self-energy and three-point vertices for gluons at the one-loop level by the BFM and demonstrate that we get the same results which were derived via the PT. We also calculate the four-gluon vertex in the BFM and show that this vertex obeys the same Ward identity that was found with the PT.

Shoji Hashimoto; Jiro Kodaira; Yoshiaki Yasui; Ken Sasaki

1994-12-01T23:59:59.000Z

235

PFT Air Infiltration Measurement Technique | Department of Energy  

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

PFT Air Infiltration Measurement Technique PFT Air Infiltration Measurement Technique PFT Air Infiltration Measurement Technique April 2, 2012 - 3:11pm Addthis The Brookhaven National Laboratory developed the PFT (PerFluorocarbon tracer gas) technique to measure changes over time when determining a building's air-infiltration rate. The Brookhaven National Laboratory developed the PFT (PerFluorocarbon tracer gas) technique to measure changes over time when determining a building's air-infiltration rate. What does this mean for me? You can save 5%-30% on your energy bill by making upgrades following a home energy assessment. A professional energy auditor may use the PFT air infiltration measurement technique to find out where your home has air leaks, though a blower door test is more commonly used.

236

Iterative cellular array multiplier using overlapped four-bit scanning technique and its application  

E-Print Network (OSTI)

ITERATIVE CELLULAR ARRAY MULTIPLIER USING OVERLAPPED FOUR-BIT SCANNING TECHNIQUE AND ITS APPLICATION A Thesis WU WOAN KIM Submitted to the 0%ce of Graduate Studies of Texas ARM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE December 1990 Major Subject: Electrical Engineering ITERATIVE CELLULAR ARRAY MULTIPLIER USING OVERLAPPED FOUR-BIT SCANNING TECHNIQUE AND ITS APPLICATION A Thesis WU WOAN KIM Approved as to style and content by: Karan...

Kim, Wu Woan

2012-06-07T23:59:59.000Z

237

Design and simulation of a scatterometer processor using digital filtering techniques  

E-Print Network (OSTI)

DESIGN AND SIMULATION OF A SCATTEROMETER PROCESSOR USING DIGITAL FILTERING TECHNIQUES A Thesis by WALTER GALKA Submitted to the Graduate College of Texas A/M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1975 Major Subject: Electrical Engineering DESIGN AND SIMULATION OF A SCATTEROMETER PROCESSOR USING DIGITAL FILTERING TECHNIQUES A Thesis by WALTER GALKA Approved as to style and content by: -Chairman of Co ' ee) /Co'-Chairman o...

Galka, Walter

2012-06-07T23:59:59.000Z

238

Development of a lidar polarimeter technique of measuring suspended solids in water  

E-Print Network (OSTI)

DEVELOPMENT OF A LIDAR POLARIMETER TECHNIQUE OF MEASURING SUSPENDED SOLIDS IN WATER A Thesis by DAVID W. PRESLEY Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1980 Major Subject; Electrical Engineering DEVELOPMENT OF A LIDAR POLARIMETER TECHNIQUE OF MEASURING SUSPENDED SOLIDS IN WATER A Thesis by DAVID W, PRESLEY Approved as to sty1e and content by: Chairman of Committee H d of Department...

Presley, David W

1980-01-01T23:59:59.000Z

239

A new technique for ultrasonic nondestructive evaluation of adhesive joints  

E-Print Network (OSTI)

the need for nondestructive characterization (NDE) of adhesive layers within a joint. In aerospace adhesives, (typically thermoset resins), determination of wavespeed, and thus modulus, will indicate if resins have been properly cured. Without proper... and will affect bond strength. Therefore, there is a need for techniques for in-situ nondestructive evaluation (NDE) of these two parameters. Although ultrasonic NDE (UNDE) techniques appear to be the most promising techniques for determining the properties...

Hanneman, Susan Elisabeth

2012-06-07T23:59:59.000Z

240

Argonne National Laboratory Scientists Invent Breakthrough Technique in  

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

Argonne National Laboratory Scientists Invent Breakthrough Argonne National Laboratory Scientists Invent Breakthrough Technique in Nanotechnology Argonne National Laboratory Scientists Invent Breakthrough Technique in Nanotechnology March 17, 2011 - 9:36am Addthis Gold and carbon nanoparticles strung together using a breakthrough new technique for materials design known as "optically directed assembly" | Courtesy of Argonne National Laboratory Gold and carbon nanoparticles strung together using a breakthrough new technique for materials design known as "optically directed assembly" | Courtesy of Argonne National Laboratory Elizabeth Meckes Elizabeth Meckes Director of User Experience & Digital Technologies, Office of Public Affairs What are the key facts? With a low-power laser, similar in intensity to those in

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Low-cost, Rapid DNA Sequencing Technique - Energy Innovation...  

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

Biofuels Advanced Materials Advanced Materials Find More Like This Return to Search Low-cost, Rapid DNA Sequencing Technique Oak Ridge National Laboratory Contact ORNL About This...

242

NNSA implements nondestructive gas sampling technique for nuclear...  

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

implements ... NNSA implements nondestructive gas sampling technique for nuclear weapon components Posted: June 12, 2012 - 1:34pm The National Nuclear Security Administration...

243

Neutron Imaging Explored as Complementary Technique for Improving...  

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

Neutron Imaging Explored as Complementary Technique for Improving Cancer Detection August 05, 2013 Researcher Maria Cekanova analyzes the neutron radiographs of a canine breast...

244

E-Print Network 3.0 - astrophysics preconditioning techniques...  

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

preconditioning techniques Page: << < 1 2 3 4 5 > >> 1 Please note that only the German version of the Curriculum is legally binding. All other linguistic versions are...

245

Boosting the Next Wave of Accelerators: New Technique Speeds...  

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

Boosting Accelerator Design Boosting the Next Wave of Accelerators New Technique Speeds Simulations by up to a Million-fold March 29, 2011 | Tags: Franklin, Nuclear Physics (NP)...

246

Optimization Online - Large-Scale Linear Programming Techniques ...  

E-Print Network (OSTI)

Large-Scale Linear Programming Techniques for the Design of Protein Folding Potentials. Michael Wagner (mwagner ***at*** odu.edu) Jaroslaw Meller (jmeller

Michael Wagner

247

Some NDA Techniques Applied to International Safeguards Projects  

Science Journals Connector (OSTI)

Recent attention to international safeguards has stimulated interest in nondestructive analysis techniques. ... describes several NDA applications in support of international safeguards projects, all involving in...

R.N. Ceo; K.A. Thompson

2000-01-01T23:59:59.000Z

248

Thermal Imaging Technique for Measuring Mixing of Fluids - Energy...  

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

Solar Thermal Solar Thermal Energy Analysis Energy Analysis Building Energy Efficiency Building Energy Efficiency Find More Like This Return to Search Thermal Imaging Technique for...

249

Use of Geophysical Techniques to Characterize Fluid Flow in a...  

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

and test combined geophysical techniques to characterize fluid flow, in relation to fracture orientations and fault distributions in a geothermal system. Average Overall Score:...

250

WATERJETTING: A NEW DRILLING TECHNIQUE IN COALBED METHANE RESERVOIRS.  

E-Print Network (OSTI)

??WATERJETTING: A NEW DRILLING TECHNIQUE IN COALBED METHANE RESERVOIRS Applications of waterjeting to drill horizontal wells for the purpose of degassing coalbeds prior to mining (more)

Funmilayo, Gbenga M.

2010-01-01T23:59:59.000Z

251

alternative fabrication techniques: Topics by E-print Network  

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

in terms of functional and nonfunctional requirements. Vasilescu, Rares 2009-01-01 11 Alternative techniques for beam halo measurements CERN Preprints Summary: In future high...

252

Novel NDE techniques in the power generation industry.  

E-Print Network (OSTI)

??The thesis presented here comprises the work undertaken for research into novel NDE techniques in the power generation industry. This has been undertaken as part (more)

Ward, Christopher M. S.

2010-01-01T23:59:59.000Z

253

Use of Geophysical Techniques to Characterize Fluid Flow in a...  

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

or otherwise restricted information. Self-potential 2 | US DOE Geothermal Program eere.energy.gov * Use of Geophysical Techniques to Characterize Fluid Flow in a Geothermal...

254

Geothermal Exploration Techniques a Case Study. Final Report...  

Open Energy Info (EERE)

to library Report: Geothermal Exploration Techniques a Case Study. Final Report Abstract The objective of this project was to review and perform a critical evaluation of...

255

Natural resource validation: A primer on concepts and techniques  

SciTech Connect

Natural resource valuation has always had a fundamental role in the practice of cost-benefit analysis of health, safety, and environmental issues. The authors provide an objective overview of resource valuation techniques and describe their potential role in environmental restoration/waste management (ER/WM) activities at federal facilities. This handbook considers five general classes of valuation techniques: (1) market-based techniques, which rely on historical information on market prices and transactions to determine resource values; (2) nonmarket techniques that rely on indirect estimates of resource values; (3) nonmarket techniques that are based on direct estimates of resource values; (4) cross-cutting valuation techniques, which combine elements of one or more of these methods; and (5) ecological valuation techniques used in the emerging field of ecological economics. The various valuation techniques under consideration are described by highlighting their applicability in environmental management and regulation. The handbook also addresses key unresolved issues in the application of valuation techniques generally, including discounting future values, incorporating environmental equity concerns, and concerns over the uncertainties in the measurement of natural resource values and environmental risk.

Ulibarri, C.A.; Wellman, K.F.

1997-07-01T23:59:59.000Z

256

Application of machine learning technique in wind turbine fault diagnosis.  

E-Print Network (OSTI)

??In this study, a machine learning technique called anomaly detection is employed for wind turbine bearing fault detection. Basically, the anomaly detection algorithm is used (more)

Purarjomandlangrudi, Afrooz

2014-01-01T23:59:59.000Z

257

Fabrication of microfluidics structures on different glasses by simplified imprinting technique  

Science Journals Connector (OSTI)

Imprinting technique is an efficient method for fabricating microstructures for microfluidics and lab-on-chip applications. However such technique is not commonly used for glass based microstructures fabrication. In this study, microstructures were transferred completely and successfully from a nickel alloy stamp to different glasses such as sodalime glass, Pyrex glass, SGBN glass and magneto optical glasses, using imprinting technique. Furthermore, the traditional vacuum hot press for imprinting was replaced with the conventional electric furnace which increases the cost efficiency and simplicity greatly. Using specific mold in the conventional furnace, the mass production of microstructured glass chips can be realized.

Qiuping Chen; Qiuling Chen; Gabriele Maccioni

2013-01-01T23:59:59.000Z

258

Electro-osmotic infusion for joule heating soil remediation techniques  

DOE Patents (OSTI)

Electro-osmotic infusion of ground water or chemically tailored electrolyte is used to enhance, maintain, or recondition electrical conductivity for the joule heating remediation technique. Induced flows can be used to infuse electrolyte with enhanced ionic conductivity into the vicinity of the electrodes, maintain the local saturation of near-electrode regions and resaturate a partially dried out zone with groundwater. Electro-osmotic infusion can also tailor the conductivity throughout the target layer by infusing chemically modified and/or heated electrolyte to improve conductivity contrast of the interior. Periodic polarity reversals will prevent large pH changes at the electrodes. Electro-osmotic infusion can be used to condition the electrical conductivity of the soil, particularly low permeability soil, before and during the heating operation. Electro-osmotic infusion is carried out by locating one or more electrodes adjacent the heating electrodes and applying a dc potential between two or more electrodes. Depending on the polarities of the electrodes, the induced flow will be toward the heating electrodes or away from the heating electrodes. In addition, electrodes carrying a dc potential may be located throughout the target area to tailor the conductivity of the target area.

Carrigan, Charles R. (Tracy, CA); Nitao, John J. (Castro Valley, CA)

1999-01-01T23:59:59.000Z

259

Accessible calibration technique for mechanical impedance measurements  

Science Journals Connector (OSTI)

A velocity pickup for stereo disk playback can be calibrated for magnitude of velocity response by using commercially available test records modulated by pure sinusoidal signals. The records may be calibrated independently by using a collimated light beam (sealed beam headlamp) and measuring (with divider and ruler) the extent of the Christmas Tree pattern reflected from the grooves. During playback at measured speeds the record becomes a source of calibrated velocity amplitude for each of the pickup channels. Summing and differencing the pickup outputs convert right and left to vertical and horizontal outputs. The phase difference between the stylus velocity and the electrical output of the pickup is calibrated by placing the cartridge tip in a dimple cut into the ground electrode of a piezoelectric force transducer driven electrically well below its resonant frequency. The driving voltage and the pickup output then exhibit the same phase relation as the groove displacement and the pickup output. The force/velocity ratio measuring system is calibrated as a function of frequency by using known masses as loads. For measuring an unknown mechanical impedance the force pickup is interposed between a driver and the load with the pickup stylus mounted either in the dimple in the electrode or on the surface of the load. [This work has been performed using the facilities of the National Bureau of Standards.

Edith L. R. Corliss

1981-01-01T23:59:59.000Z

260

Determining Plutonium Mass in Spent Fuel with Nondestructive Assay Techniques NGSI Research Overview and Update on NDA Techniques  

E-Print Network (OSTI)

under the Next Generation Safeguards Initiative considersfor Action: The Next Generation Safeguards Initiative, TheTechniques for Nuclear Safeguards, Advances in Nuclear Fuel

A., V. Mozin, S.J. Tobin, L.W. Cambell, J.R. Cheatham, C.R. Freeman, C.J. Gesh,

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Multigridlike Technique for Power Grid Analysis Joseph N. Kozhaya  

E-Print Network (OSTI)

Multigrid­like Technique for Power Grid Analysis Joseph N. Kozhaya University of Illinois, Urbana­micron VLSI designs include huge power grids that are required to distribute large amounts of current, at in a novel multigrid­like technique for the analysis of power grids. The grid is reduced to a coarser

Najm, Farid N.

262

A non-perturbative anemometric and flow visualization technique (~)  

E-Print Network (OSTI)

are based on the periodic injection Fig. 1. - In the Poiseuille flow cell (C) a thermal grating G is formed present a new visualization technique of an hydrodynamic flow using a thermal grid, « written not washed away the lines. The letter discusses a related technique - in which a thermal grid is « written

Boyer, Edmond

263

Fabrication of asymmetrically coated colloid particles by microcontact printing techniques  

E-Print Network (OSTI)

Janus particles,4 non-spherical shaped ``acorn'' particles5,6 and unsymmetrical 3D macromoleculesFabrication of asymmetrically coated colloid particles by microcontact printing techniques Olivier particles by using a microcontact printing technique. Films of water-insoluble ionic surfactants deposited

Velev, Orlin D.

264

Techniques for Securing Substation Automation Systems David Guidry1  

E-Print Network (OSTI)

Techniques for Securing Substation Automation Systems David Guidry1 , Mike Burmester1 , Xiuwen Liu1 propose techniques for resilient substation automation of power utility systems with security based-90-5 compliant substation automation systems that are resilient. We demonstrate the feasibility of our approach

Burmester, Mike

265

Logic Synthesis with High Speed CMOS Circuit Techniques  

Science Journals Connector (OSTI)

Systems for automated logic synthesis with the True Single Phase Clocking circuit technique (TSPC) and a modified form of the Clock and Data Precharged Dynamic (CDPD) circuit technique, are presented. The CDPD system synthesizes high speed one clock ... Keywords: CMOS integrated circuits, logic synthesis

Johnny Pihl; Einar J. Aas

1997-01-01T23:59:59.000Z

266

The Sparse Grid Technique on GPUs Project: Virtual Arabia  

E-Print Network (OSTI)

simulations, e.g. simulating CO2 sequestration. The sparse grid technique is a discretization technique. In Virtual Arabia we use sparse grids for compressing and decompressing highly dimensional data coming from compared to 4 core and 8 core Intel Nehalem and 32 core AMD Opteron. Compression is up to 16 times faster

Stamatakis, Alexandros

267

Memory Coalescing Techniques 1 Accessing Global and Shared Memory  

E-Print Network (OSTI)

Memory Coalescing Techniques 1 Accessing Global and Shared Memory memory coalescing to global memory avoiding bank conflicts in shared memory 2 Memory Coalescing Techniques accessing global memory for a matrix using shared memory for coalescing 3 Avoiding Bank Conflicts computing consecutive powers MCS 572

Verschelde, Jan

268

Special Section Guest Editorial Coherent Raman Imaging Techniques and Biomedical  

E-Print Network (OSTI)

Special Section Guest Editorial Coherent Raman Imaging Techniques and Biomedical Applications. The combination of high resolution and molecular contrast has moved Raman techniques into the biomedical spotlight on biomedical imag- ing. The spontaneous Raman interaction is weak, yielding insufficient photons for fast

Potma, Eric Olaf

269

Review on Ventilation Rate Measuring and Modeling Techniques in Naturally  

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

Review on Ventilation Rate Measuring and Modeling Techniques in Naturally Review on Ventilation Rate Measuring and Modeling Techniques in Naturally Ventilated Building Speaker(s): Sezin Eren Ozcan Date: May 16, 2006 - 12:00pm Location: Bldg. 90 Due to limited energy sources, countries are looking for alternative solutions to decrease energy needs. In that context, natural ventilation can be seen as a very attractive sustainable technique in building design. However, understanding of ventilation dynamics is needed to provide an efficient control. Ventilation rate has to be determined not only in terms of energy, but also for controlling indoor air quality and emissions. For these reasons, agricultural buildings (livestock houses, greenhouses, etc.), naturally ventilated industrial buildings, and residences require a reliable ventilation rate measuring technique. Measuring techniques suffer

270

Identification of Fissionable Materials Using the Tagged Neutron Technique  

SciTech Connect

This summary describes experiments to detect and identify fissionable materials using the tagged neutron technique. The objective of this work is to enhance homeland security capability to find fissionable material that may be smuggled inside shipping boxes, containers, or vehicles. The technique distinguishes depleted uranium from lead, steel, and tungsten. Future work involves optimizing the technique to increase the count rate by many orders of magnitude and to build in the additional capability to image hidden fissionable materials. The tagged neutron approach is very different to other techniques based on neutron die-away or photo-fission. This work builds on the development of the Associated Particle Imaging (API) technique at the Special Technologies Laboratory (STL) [1]. Similar investigations have been performed by teams at the Oak Ridge National Laboratory (ORNL), the Khlopin Radium Institute in Russia, and by the EURITRACK collaboration in the European Union [2,3,4].

R.P. Keegan, J.P. Hurley, J.R. Tinsley, R. Trainham

2009-06-30T23:59:59.000Z

271

Explorations of Space-Charge Limits in Parallel-Plate Diodes and Associated Techniques for Automation  

E-Print Network (OSTI)

and Associated Techniques for Automation by Benjamin Ragan-and Associated Techniques for Automation Copyright 2013 byand Associated Techniques for Automation by Benjamin Ragan-

Ragan-Kelley, Benjamin

2013-01-01T23:59:59.000Z

272

Neutron Imaging Explored as Complementary Technique for Improving Cancer  

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

Neutron Imaging Explored as Complementary Technique for Improving Cancer Neutron Imaging Explored as Complementary Technique for Improving Cancer Detection August 05, 2013 Researcher Maria Cekanova analyzes the neutron radiographs of a canine breast tumor (black color in top image of monitor screen) using the software to visualize in color the various intensities of neutron transmissions through the breast tissue. ORNL and University of Tennessee collaboration now analyzing first results from neutron radiographs of cancerous tissue samples Today's range of techniques for detection of breast and other cancers include mammography, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, positron emission tomography (PET), and optical imaging. Each technology has advantages and disadvantages, with limitations either

273

Connection between the pinch technique and the background field method  

Science Journals Connector (OSTI)

The connection between the pinch technique and the background field method is further explored. We show by explicit calculations that the application of the pinch technique in the framework of the background field method gives rise to exactly the same results as in the linear renormalizable gauges. The general method for extending the pinch technique to the case of Greens functions with off-shell fermions as incoming particles is presented. As an example, the one-loop gauge-independent quark self-energy is constructed. We briefly discuss the possibility that the gluonic Greens functions, obtained by either method, correspond to physical quantities.

Joannis Papavassiliou

1995-01-15T23:59:59.000Z

274

Miyake-Apple posterior video analysis/photographic technique  

Science Journals Connector (OSTI)

The Miyake-Apple technique for posterior photography and video analysis of postmortem eyes and its variations provide a unique view of the anterior segment structures and surgical manipulations that are not readily seen during surgical procedures or by clinical inspection. It is particularly useful in studying and teaching anterior segment surgery, especially cataract and intraocular lens (IOL) surgery. We summarize the peer-reviewed literature on the use of this technique (1) in experimental studies with fresh human or animal eyes to analyze new \\{IOLs\\} and surgical techniques, (2) in formalin-fixed human pseudophakic autopsy eyes to study IOL-related complications, and (3) for teaching and training purposes.

Frederico A.S. Pereira; Liliana Werner; E. John Milverton; Minas T. Coroneo

2009-01-01T23:59:59.000Z

275

Application of linear programming redispatch technique to dynamic generation allocation  

SciTech Connect

This paper considers dispatch problems that involve the allocation of system generation optimally among generating units while tracking a load curve and observing power rate limits of the units, system spinning reserve requirements and other security constraints. Two methods are used in the solution of the problem. The first method is quadratic programming technique combined with a linear programming redispatch technique. The latter utilizes a linear programming formulation of the dynamic dispatch problem about the base case static economic dispatch solution. Tests and computer results on 4 systems of different combinations of units and intervals are given to show the advantages of the techniques proposed.

Somuah, C.B. (Dept. of Electrical Engr., KFUPM, Dhahran 31261 (SA)); Khunaizi, N. (Saudi Consolidated Electric Co., In the Eastern Province, Dammam (SA))

1990-02-01T23:59:59.000Z

276

Nondestructive Technique Survey for Assessing Integrity of Composite Firing Vessel  

SciTech Connect

The repeated use and limited lifetime of a composite tiring vessel compel a need to survey techniques for monitoring the structural integrity of the vessel in order to determine when it should be retired. Various nondestructive techniques were researched and evaluated based on their applicability to the vessel. The methods were visual inspection, liquid penetrant testing, magnetic particle testing, surface mounted strain gauges, thermal inspection, acoustic emission, ultrasonic testing, radiography, eddy current testing, and embedded fiber optic sensors. It was determined that embedded fiber optic sensor is the most promising technique due to their ability to be embedded within layers of composites and their immunity to electromagnetic interference.

Tran, A.

2000-08-01T23:59:59.000Z

277

Lightweight and Statistical Techniques for Petascale PetaScale Debugging  

SciTech Connect

This project investigated novel techniques for debugging scientific applications on petascale architectures. In particular, we developed lightweight tools that narrow the problem space when bugs are encountered. We also developed techniques that either limit the number of tasks and the code regions to which a developer must apply a traditional debugger or that apply statistical techniques to provide direct suggestions of the location and type of error. We extend previous work on the Stack Trace Analysis Tool (STAT), that has already demonstrated scalability to over one hundred thousand MPI tasks. We also extended statistical techniques developed to isolate programming errors in widely used sequential or threaded applications in the Cooperative Bug Isolation (CBI) project to large scale parallel applications. Overall, our research substantially improved productivity on petascale platforms through a tool set for debugging that complements existing commercial tools. Previously, Office Of Science application developers relied either on primitive manual debugging techniques based on printf or they use tools, such as TotalView, that do not scale beyond a few thousand processors. However, bugs often arise at scale and substantial effort and computation cycles are wasted in either reproducing the problem in a smaller run that can be analyzed with the traditional tools or in repeated runs at scale that use the primitive techniques. New techniques that work at scale and automate the process of identifying the root cause of errors were needed. These techniques significantly reduced the time spent debugging petascale applications, thus leading to a greater overall amount of time for application scientists to pursue the scientific objectives for which the systems are purchased. We developed a new paradigm for debugging at scale: techniques that reduced the debugging scenario to a scale suitable for traditional debuggers, e.g., by narrowing the search for the root-cause analysis to a small set of nodes or by identifying equivalence classes of nodes and sampling our debug targets from them. We implemented these techniques as lightweight tools that efficiently work on the full scale of the target machine. We explored four lightweight debugging refinements: generic classification parameters, such as stack traces, application-specific classification parameters, such as global variables, statistical data acquisition techniques and machine learning based approaches to perform root cause analysis. Work done under this project can be divided into two categories, new algorithms and techniques for scalable debugging, and foundation infrastructure work on our MRNet multicast-reduction framework for scalability, and Dyninst binary analysis and instrumentation toolkits.

Miller, Barton

2014-06-30T23:59:59.000Z

278

Trace-Based Analysis and Prediction of Cloud Computing User Behavior Using the Fractal Modeling Technique  

E-Print Network (OSTI)

, pbogdan, pedram}@usc.edu Abstract--The problem of big data analytics is gaining increasing research infrastructure to tackle the problem of big data analytics "on" the cloud [4], we will This work is supported Technique Shuang Chen, Mahboobeh Ghorbani, Yanzhi Wang, Paul Bogdan, Massoud Pedram Department of Electrical

Pedram, Massoud

279

Synthesis of High Quality Single-Walled Carbon Nanotube Silks by the Arc Discharge Technique  

Science Journals Connector (OSTI)

Synthesis of High Quality Single-Walled Carbon Nanotube Silks by the Arc Discharge Technique ... Cerium was found to be a good element for stabilizing the electric arc, though the SWNT products as-grown from Ce had a low purity. ...

Hong-wei Zhu; Bin Jiang; Cai-lu Xu; De-hai Wu

2003-06-17T23:59:59.000Z

280

Power Minimization Techniques at the RT-Level and Afshin Abdollahi and Massoud Pedram  

E-Print Network (OSTI)

1 Power Minimization Techniques at the RT-Level and Below Afshin Abdollahi and Massoud Pedram Dept. of Electrical Engineering University of Southern California Los Angeles, CA 90089 U.S.A. Abstract ­ Power consumption and power-related issues have become a first-order concern for most designs and loom

Pedram, Massoud

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Testing Techniques for Hardware Security Mehrdad Majzoobi and Farinaz Koushanfar Miodrag Potkonjak  

E-Print Network (OSTI)

Testing Techniques for Hardware Security Mehrdad Majzoobi and Farinaz Koushanfar Miodrag Potkonjak Electrical and Computer Engineering Dept., and Computer Science Dept. Rice University, Houston, TX 77005 Computer Science Dept. University of California Los Angeles, Los Angeles, CA 90095 Abstract--System

282

E-Print Network 3.0 - advanced analytical techniques Sample Search...  

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

Malaysia) Summary: Approaches Practices and Advances in Molecular Spectroscopy Separation Science Recent Techniques... Techniques: Electrophoresis, FFF, CCC Mass Spectrometry...

283

Quadrupole Magnetic Center Definition Using the Hall Probe Measurement Technique  

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

Quadrupole Magnetic Center Definition Quadrupole Magnetic Center Definition Using the Hall Probe Measurement Technique Isaac Vasserman Experimental Facility Division, Advanced Photon Source, Argonne National Laboratory 1. Introduction The linac coherent light source [LCLS] project [1] requires 5 µm straightness of the particle beam trajectory to achieve the desired goal of x-ray multiplication. The main source of beam trajectory distortion is misalignment of quadrupoles. The LCLS project will use a beam-based alignment technique to align the quadrupoles to the needed accuracy. An initial accuracy of the quadrupole alignment not worse than 50 µm is required [2]. A different technique could be used for this purpose. It would be though quite desirable to avoid using an additional magnetic measurement technique and to use

284

Exploration and Development Techniques for Basin and Range Geothermal  

Open Energy Info (EERE)

Techniques for Basin and Range Geothermal Techniques for Basin and Range Geothermal Systems: Examples from Dixie Valley, Nevada Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Exploration and Development Techniques for Basin and Range Geothermal Systems: Examples from Dixie Valley, Nevada Abstract Abstract unavailable. Authors David D. Blackwell, Mark Leidig, Richard P. Smith, Stuart D. Johnson and Kenneth W. Wisian Conference GRC Annual Meeting; Reno, NV; 2002/09/22 Published Geothermal Resources Council, 2002 DOI Not Provided Check for DOI availability: http://crossref.org Online Internet link for Exploration and Development Techniques for Basin and Range Geothermal Systems: Examples from Dixie Valley, Nevada Citation David D. Blackwell,Mark Leidig,Richard P. Smith,Stuart D. Johnson,Kenneth

285

Argonne CNM News: A better etching technique: sequential infiltration  

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

A Better Etching Technique Is Invented A Better Etching Technique Is Invented Mark Holt (Argonne Center for Nanoscale Materials) examines a sample in the Hard X-Ray Nanoprobe Deep canyons can be etched into materials at the nanoscale with a new SIS-based lithography technique Nanoscientists at Argonne's Center for Nanoscale Materials and Energy Systems Division have discovered a new way to transfer patterns onto different materials, an innovation that combines new tricks with an old technology. One of the biggest recent questions facing materials science has involved the development of better techniques for high-resolution lithographies such as electron-beam (e-beam) lithography. E-beam lithography is used to manufacture the tiniest of structures, including microelectronics and advanced sensors; beams of electrons are part of a

286

Innovative Technique Accelerates Waste Disposal at Idaho Site | Department  

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

Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site May 15, 2013 - 12:00pm Addthis A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. Macro-packs from the Idaho site are shown here safely and compliantly disposed. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. IDAHO FALLS, Idaho - An innovative treatment and disposal technique is enabling the Idaho site to accelerate shipments of legacy nuclear waste for

287

Definition: Data and Modeling Techniques | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Data and Modeling Techniques Jump to: navigation, search Dictionary.png Data and Modeling Techniques Physical properties and other reservoir performance data are typically used to constrain conceptual and then quantitative models of individual reservoirs. The constraint on individual models is improved as the number of independent data types and sets increases. View on Wikipedia Wikipedia Definition Data modeling in software engineering is the process of creating a data model for an information system by applying formal data modeling techniques. Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:Data_and_Modeling_Techniques&oldid=690516"

288

A Distinction Technique Between Volcanic And Tectonic Depression Structures  

Open Energy Info (EERE)

Distinction Technique Between Volcanic And Tectonic Depression Structures Distinction Technique Between Volcanic And Tectonic Depression Structures Based On The Restoration Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: A Distinction Technique Between Volcanic And Tectonic Depression Structures Based On The Restoration Modeling Of Gravity Anomaly- A Case Study Of The Hohi Volcanic Zone, Central Kyushu, Japan Details Activities (0) Areas (0) Regions (0) Abstract: In this study, we propose a numerical modeling technique which restores the gravity anomaly of tectonic origin and identifies the gravity low of caldera origin. The identification is performed just by comparing the restored gravity anomalies with the observed gravity anomalies, thus we

289

Chemical logging- a geothermal technique | Open Energy Information  

Open Energy Info (EERE)

logging- a geothermal technique logging- a geothermal technique Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Chemical logging- a geothermal technique Details Activities (1) Areas (1) Regions (0) Abstract: Chemical logging studies conducted at the Department of Energy's Raft River Geothermal Test Site in south central Idaho resulted in the development of a technique to assist in geothermal well drilling and resource development. Calcium-alkalinity ratios plotted versus drill depth assisted in defining warm and hot water aquifers. Correlations between the calcium-alkalinity log and lithologic logs were used to determine aquifer types and detection of hot water zones 15 to 120 m before drill penetration. INEL-1 at the Idaho National Engineering Laboratory site in

290

" A Heterodyne Laser-induced Fluorescence Technique to Determine  

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

A Heterodyne Laser-induced Fluorescence Technique to Determine A Heterodyne Laser-induced Fluorescence Technique to Determine Simultaneously the Bulk and Time Varying Molecule Velocity Distribution." Inventors Ahmed Diallo, Stephane Mazouffre.The method's primary goal is to determine simultaneously the bulk a The method's primary goal is to determine simultaneously the bulk and the time verying part of the molecule velocity distribution using a heterodyne laser induced fluorescence technique. Used in biology, chemistry and plasma physics laser-induced fluorescence is a well known technique to resolve the bulk velocity distribution of probed molecules and atoms in a medium. The novel approach is aimed at determining not only the bulk distribution, but also the time-varying velocity distribution. The two parts of the velocity distribution are key in the characterization of a

291

Innovative Technique Accelerates Waste Disposal at Idaho Site | Department  

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

Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site Innovative Technique Accelerates Waste Disposal at Idaho Site May 15, 2013 - 12:00pm Addthis A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. Macro-packs from the Idaho site are shown here safely and compliantly disposed. A product drum of mixed low-level waste is lowered into a high-density polyethylene macro-pack. Macro-packs from the Idaho site are shown here safely and compliantly disposed. IDAHO FALLS, Idaho - An innovative treatment and disposal technique is enabling the Idaho site to accelerate shipments of legacy nuclear waste for

292

Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques |  

Open Energy Info (EERE)

Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Evaluation of the Mercury Soil Mapping Geothermal Exploration Techniques Abstract In order to evaluate the suitability of the soil mercury geochemical survey as a geothermal exploration technique, soil concentrates of mercy are compared to the distribution of measured geothermal gradients at Dixie Valley, Nevada; Roosevelt Hot Springs, Utah; and Nova, Japan. Zones containing high mercury values are found to closely correspond to high geothermal gradient zones in all three areas. Moreover, the highest mercury values within the anomalies are found near the wells with the highest geothermal gradient. Such close correspondence between soil concentrations

293

Backscatter absorption gas imaging: a new technique for gas visualization  

Science Journals Connector (OSTI)

This paper presents a new laser-based method of gas detection that permits real-time television images of gases to be produced. The principle of this technique [which is called...

McRae, Thomas G; Kulp, Thomas J

1993-01-01T23:59:59.000Z

294

Nongenetic Techniques for Isolating Fusion Products between Different Cell Types  

Science Journals Connector (OSTI)

Until recently, virtually all investigations into the behavior of cell hybrids have employed genetic selection techniques, such as the hypoxanthine-aminopterin-thymidine (HAT) system (Littlefield, 1964), to isola...

Woodring E. Wright

1987-01-01T23:59:59.000Z

295

Production of structures for microfluidics using polymer imprint techniques  

Science Journals Connector (OSTI)

We present a technology for the fabrication of three dimensional microfluidic channels in optically transparent substrates consisting of polymers with different properties. The microstructures are fabricated using polymer replication techniques with ... Keywords: Hot embossing, Micromechanisation, Micromoldin, Nanoimprint lithography, Polymers

C. A. Mills; E. Martinez; F. Bessueille; G. Villanueva; J. Bausells; J. Samitier; A. Errachid

2005-03-01T23:59:59.000Z

296

Benefits of the Multiple Echo Technique for Ultrasonic Thickness Testing  

SciTech Connect

Much effort has been put into determining methods to make accurate thickness measurements, especially at elevated temperatures. An accuracy of +/- 0.001 inches is typically noted for commercial ultrasonic thickness gauges and ultrasonic thickness techniques. Codes and standards put limitations on many inspection factors including equipment, calibration tolerance and temperature variations. These factors are important and should be controlled, but unfortunately do not guarantee accurate and repeatable measurements in the field. Most technicians long for a single technique that is best for every situation, unfortunately, there are no 'silver bullets' when it comes to nondestructive testing. This paper will describe and discuss some of the major contributors to measurement error as well as some advantages and limitations of multiple echo techniques and why multiple echo techniques should be more widely utilized for ultrasonic thickness measurements.

Elder, J.; Vandekamp, R.

2011-02-10T23:59:59.000Z

297

C++ programming techniques for High Performance Computing on systems with  

E-Print Network (OSTI)

C++ programming techniques for High Performance Computing on systems with non-uniform memory access (including NUMA) without sacrificing performance. ccNUMA In High Performance Computing (HPC), shared- memory

Fiebig, Peter

298

The characterization of particle clouds using optical imaging techniques  

E-Print Network (OSTI)

Optical imaging techniques can be used to provide a better understanding of the physical properties of particle clouds. The purpose of this thesis is to design, perform and evaluate a set of experiments using optical imaging ...

Bruce, Elizabeth J. (Elizabeth Jane), 1972-

1998-01-01T23:59:59.000Z

299

EERE QC Workshop: Overview of Quality Control Techniques  

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

Overview of quality control techniques by Michael Ulsh, National Renewable Energy Laboratory, at the EERE QC Workshop held December 9-10, 2013, at the National Renewable Energy Laboratory in Golden, Colorado.

300

Continuous Adaptive Bias Technique for Radiofrequency Power Amplifiers  

Science Journals Connector (OSTI)

Chapter 3 proposes an adaptive-bias power amplifier that is based on a finely tuned envelope injection principle. Such flexible technique makes a simultaneous improvement of linearity and efficiency possible a...

Laurent Leyssenne; Eric Kerherv; Yann Deval

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Processing techniques for data from the GKSS pressure suppression experiments  

SciTech Connect

This report describes techniques developed at LLNL for processing data from large-scale steam condensation experiments being performed by the GKSS Research Center in the Federal Republic of Germany. In particular, the computer code GKPLOT, a special evaluation program for generating time-history plots and numerical output files of GKSS data, will be discussed together with tape handling techniques to unblock the data to a form compatible with the LLNL octopus computer network. Using these data processing techniques, we have provided a convenient means of independently examining and analyzing a very extensive data base for steam condenstaion phenomena. In addition, the techniques developed for handling the GKSS data are applicable to the treatment of similar, but perhaps differently structured, experiment data sets.

Holman, G.S.; McCauley, E.W.

1980-12-22T23:59:59.000Z

302

Ultrasonication technique: a method for dispersing nanoclay in wood adhesives  

Science Journals Connector (OSTI)

The efficiency of ultrasonication technique to disperse nanoclay in polyvinyl acetate (PVA) was examined. A hydrophilic nanoclay was added to PVA, and its effects on bond strength of wood joints were determined. The results of bond strength measured ...

Alireza Kaboorani; Bernard Riedl; Pierre Blanchet

2013-01-01T23:59:59.000Z

303

Low Power Filtering Techniques for Wideband and Wireless Applications  

E-Print Network (OSTI)

This dissertation presents design and implementation of continuous time analog filters for two specific applications: wideband analog systems such as disk drive channel and low-power wireless applications. Specific focus has been techniques...

Gambhir, Manisha

2010-10-12T23:59:59.000Z

304

EXPERIMENTAL IDENTIFICATION OF COHESIVE ZONE MODELS FROM THERMOMECHANICAL IMAGING TECHNIQUES  

E-Print Network (OSTI)

1 EXPERIMENTAL IDENTIFICATION OF COHESIVE ZONE MODELS FROM THERMOMECHANICAL IMAGING TECHNIQUES S]. Although CZMs are becoming increasingly powerful, the identification of these models still remains of the ductile material into a purely elastoplastic behaviour related to the bulk response (hardening

Paris-Sud XI, Université de

305

Experimental Analysis of Two Measurement Techniques to Characterize Photodiode Linearity  

E-Print Network (OSTI)

Experimental Analysis of Two Measurement Techniques to Characterize Photodiode Linearity Anand anand@ece.ucsb.edu Abstract--As photodiodes become more linear, accurately characterizing, the limitations of the measurement system in determining the distortion of highly linear photodiodes. I

Coldren, Larry A.

306

Automation of single-cell techniques in neural tissue  

E-Print Network (OSTI)

The highly heterogeneous nature of cells in the context of native tissue environments necessitates the development of tools and techniques that can manipulate and analyze samples with single-cell resolution. While the past ...

Steinmeyer, Joseph D. (Joseph Daly)

2014-01-01T23:59:59.000Z

307

Surface space : digital manufacturing techniques and emergent building material  

E-Print Network (OSTI)

This thesis explores tectonic possibilities of new material and forming techniques. The design process is catalyzed by experimenting different configurations of the material.This project attempts to develop inventive ways ...

Ho, Joseph Chi-Chen, 1975-

2002-01-01T23:59:59.000Z

308

Muon Diagnostics: A New Technique of Heliosphere Investigations  

Science Journals Connector (OSTI)

A new technique of remote monitoring of dynamic processes in the heliosphere (muon diagnostics) has been presented. The approach ... analysis of spatial-angular and temporal variations of muon flux detected at th...

A. A. Petrukhin

2009-04-01T23:59:59.000Z

309

High-Throughput/Combinatorial Techniques in Hydrogen Storage...  

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

ThroughputCombinatorial Techniques in Hydrogen Storage Materials R&D Ned Stetson, Larry Blair 1 , Grace Ordaz, Carole Read, George Thomas 2 , and Sunita Satyapal Suite 900, 7475...

310

USE OF ADVANCED DATA PROCESSING TECHNIQUES IN THE IMAGING OF...  

Open Energy Info (EERE)

USE OF ADVANCED DATA PROCESSING TECHNIQUES IN THE IMAGING OF THE COSO GEOTHERMAL FIELD Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Proceedings:...

311

Automated logic design techniques applicable to integrated circuitry technology  

Science Journals Connector (OSTI)

Rapidly advancing integrated circuit technology has placed many new and often unforeseen demands on logic packaging techniques and, hence, is also impacting traditional computer design concepts. For instance, one of the most pertinent and immediate requirements ...

R. Waxman; M. T. McMahon; B. J. Crawford; A. B. DeAndrade

1966-11-01T23:59:59.000Z

312

Advisory Group On The Application Of Nuclear Techniques To Geothermal...  

Open Energy Info (EERE)

On The Application Of Nuclear Techniques To Geothermal Studies-Meeting In Pisa 8-12 Sep 1975 Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article:...

313

Bureau of Land Management - Techniques for Documenting a No Action...  

Open Energy Info (EERE)

for Documenting a No Action Alternative in an EA Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Bureau of Land Management - Techniques for Documenting...

314

Robust techniques for developing empirical models of fluidized bed combustors  

E-Print Network (OSTI)

This report is designed to provide a review of those data analysis techniques that are most useful for fitting m-dimensional empirical surfaces to very large sets of data. One issue explored is the improvement

Gruhl, Jim

315

Development of the Passive Cooling Technique in China  

E-Print Network (OSTI)

With more and more energy and environmental issues, the energy-saving and sustainable development of buildings is of utmost concern to the building industry. Passive cooling techniques can optimally utilize natural resources in order to reduce...

Zhou, J.; Wu, J.; Zhang, G.; Xu, Y.

2006-01-01T23:59:59.000Z

316

Neutral current compensation techniques in autonomous wind energy sources  

Science Journals Connector (OSTI)

The problem of neutral current compensation has to be addressed in Wind Energy integrated weak micro-grids. This study analyses two types of techniques ... same wind energy conversion system. The hybrid micro-grid

Aarti Gupta; Dinesh Jain; Surender Dahiya

2014-12-01T23:59:59.000Z

317

Radiation induced strand breakage analyzed by tunel technique  

E-Print Network (OSTI)

RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to the 015ce of Graduate Studies of Texas Ad. M University in partial fu1611ment of the requirements for the dree of MASTER OF SCIENCE May... 2003 Major Subject: Health Physics RADIATION INDUCED STRAND BREAKAGE ANALYZED BY TUNEL TECHNIQUE A Thesis MAtuSSA DAWN REYNOLDS Submitted to Texas %%:M University in partial fulfillmen of the requirements for the degree of MASTER OF SCIENCE...

Reynolds, Marissa Dawn

2003-01-01T23:59:59.000Z

318

Algorithmic techniques for nanometer VLSI design and manufacturing closure  

E-Print Network (OSTI)

to the traditional circuit design without handling variations. With in- creasing design complexity, innovative efiective and ecient algorithmic techniques are needed to compute a high quality design in terms of both timing and power. After that, variation... OF PHILOSOPHY May 2008 Major Subject: Computer Engineering ALGORITHMIC TECHNIQUES FOR NANOMETER VLSI DESIGN AND MANUFACTURING CLOSURE A Dissertation by SHIYAN HU Submitted to the Oce of Graduate Studies of Texas A&M University in partial fulflllment...

Hu, Shiyan

2008-10-10T23:59:59.000Z

319

New techniques said to be backed by results  

SciTech Connect

One of the benefits to have come from activities of the International Atomic Energy Agency (IAEA) inspection teams in Iraq, according to Director General Hans Blix, is a vast amount of experience with new techniques, which may be of great value in efforts to strengthen the capability of the safeguards system. In particular, techniques of environmental monitoring could help to detect undeclared material and installations.

Not Available

1993-11-01T23:59:59.000Z

320

Technique for identifying, tracing, or tracking objects in image data  

DOE Patents (OSTI)

A technique for computer vision uses a polygon contour to trace an object. The technique includes rendering a polygon contour superimposed over a first frame of image data. The polygon contour is iteratively refined to more accurately trace the object within the first frame after each iteration. The refinement includes computing image energies along lengths of contour lines of the polygon contour and adjusting positions of the contour lines based at least in part on the image energies.

Anderson, Robert J. (Albuquerque, NM); Rothganger, Fredrick (Albuquerque, NM)

2012-08-28T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Application of harmonic analysis in the measuring technique of corrosion  

SciTech Connect

A technique for the determination of the rate of corrosion is described based on the harmonic analysis of the current of the electrode perturbed with relatively small amplitude undistorted sinusoidal alternating voltage. The measurement carried out in the vicinity of the corrosion potential permits the determination of both the corrosion current density and the Tafel slopes. The technique is illustrated using a study of the corrosion of various types of iron electrodes in acidic and neutral media.

Meszaros, L.; Meszaros, G.; Lengyel, B. (Hungarian Academy of Sciences, Budaoersi (Hungary). Research Lab. for Inorganic Chemistry)

1994-08-01T23:59:59.000Z

322

A screening technique for salt tolerance in onion  

E-Print Network (OSTI)

A SCREENING TECHNIQUE FOR SALT TOLERANCE IN ONION A Thesis by MARY JORDAN WANNAMAKER Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 1985 Major... Subject: Horticulture A SCREENING TECHNIQUE FOR SALT TOLERANCE IN ONION A Thesis by NARY JORDAN WANNAMAKER Approved as to style and content by: Leonard M. Pike (Chairma f Cp 'ttee) 'eg C. Cobb (Member) Ron Newton (Member) . Grant Vest (Head...

Wannamaker, Mary Jordon

2012-06-07T23:59:59.000Z

323

A new acceleration technique for the backpropagation neural network paradigm  

E-Print Network (OSTI)

A NEW ACCELERATION TECHNIQUE FOR THE BACKPROPAGATION NEURAL NETWORK PARADIGM A Thesis by JOGEN I(. PATHAI( Submitted to the Oflice ol Graduate Studies of Texas AkM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE December 1991 Major Subject: Computer Science A NEW ACCELERATION TECHNIQUE FOR THE BACKPROPAGATION NEURAL NETWORK PARADIGM A Thesis by JOGEN K. PATHAK Approved as to style and content by: Bahram Nassersharif (Chair of Committee...

Pathak, Jogen K

1991-01-01T23:59:59.000Z

324

A Comparison of Graphical Techniques for Asymmetric Decision Problems  

E-Print Network (OSTI)

, and Matheson?s (SHM) (1993) influence dia- grams (IDs), Shenoy?s (1993b, 1996) valuation networks (VNs), and Covaliu and Oliver?s (1995) sequential decision diagrams (SDDs). We focus our attention on techniques designed for asymmetric decision problems. In a... chance and decision variables. Each technique has a distinct way of encoding asymmetry. DTs encode asymmetry through the use of scenarios. IDs encode asymmetry using graphical structures called ?distribution trees.? VNs encode asymmetry using functions...

Bielza, Concha; Shenoy, Prakash P.

1999-11-01T23:59:59.000Z

325

ALS Scientists Patent Technique To Dramatically Advance Grating-Based  

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

ALS Scientists Patent Technique To ALS Scientists Patent Technique To Dramatically Advance Grating-Based Spectroscopy ALS Scientists Patent Technique To Dramatically Advance Grating-Based Spectroscopy Print Tuesday, 29 January 2013 16:28 Gratings - optical elements used to separate light in spectroscopy applications - have been in use since the early 19th century. Developments in the late 19th century led to the manufacture of gratings by highly precise ruling with a diamond onto a metallic surface. Many gratings are still produced today using the same technique. Holographic methods and ion etching are also used, but all of these techniques result in gratings that contain significant imperfections, which limits resolution. Watch a video about this topic... However, a new type of ultra-high diffraction grating recently patented by members of the ALS Experimental Systems Group (ESG), working with colleagues from Berkeley Lab's Center for X-ray Optics, stands to revolutionize the resolution capabilities of soft x-ray spectroscopy. The key to the new technique is the production of a near atomically perfect substrate, using the anisotropic etching of silicon.

326

ALS Scientists Patent Technique To Dramatically Advance Grating-Based  

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

ALS Scientists Patent Technique To Dramatically ALS Scientists Patent Technique To Dramatically Advance Grating-Based Spectroscopy ALS Scientists Patent Technique To Dramatically Advance Grating-Based Spectroscopy Print Gratings - optical elements used to separate light in spectroscopy applications - have been in use since the early 19th century. Developments in the late 19th century led to the manufacture of gratings by highly precise ruling with a diamond onto a metallic surface. Many gratings are still produced today using the same technique. Holographic methods and ion etching are also used, but all of these techniques result in gratings that contain significant imperfections, which limits resolution. Watch a video about this topic... However, a new type of ultra-high diffraction grating recently patented by members of the ALS Experimental Systems Group (ESG), working with colleagues from Berkeley Lab's Center for X-ray Optics, stands to revolutionize the resolution capabilities of soft x-ray spectroscopy. The key to the new technique is the production of a near atomically perfect substrate, using the anisotropic etching of silicon.

327

Measurement of underwater vibration by ultrasonic speckle stroboscopic technique  

Science Journals Connector (OSTI)

Abstract Ultrasonic speckles are widely used in medical imaging, but are not commonly accepted in industry. An ultrasonic speckle stroboscopic technique for industrial applications is introduced in this manuscript. In this technique, a whole field ultrasonic speckle image converter is no longer needed as in B-mode scanning, and neither is the process of searching for the maximum correlation coefficient among sub-sets in the ultrasonic speckle field. In pulse-echo working mode, by the modulation of sweeping frequency and trigger delay and performing a digital speckle correlation calculation, it can be obtained point-to-point the vibration frequency, amplitude and phase difference of underwater solid surfaces. Compared with traditional vibration measurement techniques, ultrasonic speckle stroboscopic technique can perform on-line, underwater, noncontact experiments, and is insensitive to the environment and the sample surface roughness. In this manuscript this technique was applied to a vibrating cantilever underwater. The experimental results were in good agreement with other testing methods. Therefore, the noncontact testing technique for vibration coefficient, especially the vibration phase difference, provides an alternative method for the mode analysis of industrial constructions, which is a piece of very important work for industrial underwater structure design.

Zhihua Luo; Jun Chu; Lei Shen; Peng Hu; Hongmao Zhu; Lili Hu

2014-01-01T23:59:59.000Z

328

Literature survey of heat transfer enhancement techniques in refrigeration applications  

SciTech Connect

A survey has been performed of the technical and patent literature on enhanced heat transfer of refrigerants in pool boiling, forced convection evaporation, and condensation. Extensive bibliographies of the technical literature and patents are given. Many passive and active techniques were examined for pure refrigerants, refrigerant-oil mixtures, and refrigerant mixtures. The citations were categorized according to enhancement technique, heat transfer mode, and tube or shell side focus. The effects of the enhancement techniques relative to smooth and/or pure refrigerants were illustrated through the discussion of selected papers. Patented enhancement techniques also are discussed. Enhanced heat transfer has demonstrated significant improvements in performance in many refrigerant applications. However, refrigerant mixtures and refrigerant-oil mixtures have not been studied extensively; no research has been performed with enhanced refrigerant mixtures with oil. Most studies have been of the parametric type; there has been inadequate examination of the fundamental processes governing enhanced refrigerant heat transfer, but some modeling is being done and correlations developed. It is clear that an enhancement technique must be optimized for the refrigerant and operating condition. Fundamental processes governing the heat transfer must be examined if models for enhancement techniques are to be developed; these models could provide the method to optimize a surface. Refrigerant mixtures, with and without oil present, must be studied with enhancement devices; there is too little known to be able to estimate the effects of mixtures (particularly NARMs) with enhanced heat transfer. Other conclusions and recommendations are offered.

Jensen, M.K.; Shome, B. [Rensselaer Polytechnic Inst., Troy, NY (United States). Dept. of Mechanical Engineering, Aeronautical Engineering and Mechanics

1994-05-01T23:59:59.000Z

329

Low Energy Buildings: CFD Techniques for Natural Ventilation and Thermal  

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

Low Energy Buildings: CFD Techniques for Natural Ventilation and Thermal Low Energy Buildings: CFD Techniques for Natural Ventilation and Thermal Comfort Prediction Speaker(s): Malcolm Cook Date: February 14, 2013 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter Malcolm's presentation will cover both his research and consultancy activities. This will cover the work he has undertaken during his time spent working with architects on low energy building design, with a particular focus on natural ventilation and passive cooling strategies, and the role computer simulation can play in this design process. Malcolm will talk about the simulation techniques employed, as well as the innovative passive design principles that have led to some of the UK's most energy efficient buildings. In addition to UK building projects, the talk will

330

Workshop on Time Domain Science Using X-ray Techniques  

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

Time-Resolved Beamlines Time-Resolved Beamlines Advisory Committee Workshop Home Workshop Chairs: Lin Chen (Argonne National Laboratory) Steve Milton (Advanced Photon Source) David Reis (University of Michigan) Linda Young (Argonne National Laboratory) Workshop on Time Domain Science Using X-ray Techniques August 29 September 1, 2004, The Abbey, Fontana, Lake Geneva Area, Wisconsin A workshop on "Time Domain Science Using X-ray Techniques" was held from August 29 September 1, 2004 , welcoming both experts and beginners in the field. This is one of the concurrently held workshops in the series on "Future Scientific Directions for the Advanced Photon Source." The goal of the workshop was to identify future directions in scientific research using time resolved x-ray techniques and to address possiblities to produce ps

331

Hyperspectral Remote Sensing Techniques For Locating Geothermal Resources |  

Open Energy Info (EERE)

Hyperspectral Remote Sensing Techniques For Locating Geothermal Resources Hyperspectral Remote Sensing Techniques For Locating Geothermal Resources Jump to: navigation, search OpenEI Reference LibraryAdd to library Poster: Hyperspectral Remote Sensing Techniques For Locating Geothermal Resources Abstract Demonstrating the effectiveness of hyperspectral sensors to explore for geothermal resources will be critical to our nation's energy security plans. Discovering new geothermal resources will contribute to established renewable energy capacity and lower our dependence upon fuels that contribute to green house gas emissions. The use of hyperspectral data and derived imagery products is currently helping exploration managers gain greater efficiencies and drilling success. However, more work is needed as geologists continue to learn about hyperspectral imaging and, conversely,

332

Thermal techniques for characterizing magma body geometries | Open Energy  

Open Energy Info (EERE)

techniques for characterizing magma body geometries techniques for characterizing magma body geometries Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Thermal techniques for characterizing magma body geometries Details Activities (1) Areas (1) Regions (0) Abstract: The surface heat flux distribution resulting from emplaced magma bodies can be used to help characterize the magma source. Closed-form analytical solutions for the conduction heat transfer from various idealized magma geometries (dikes, sills, and spheres) are obtained using either the Schwarz-Christoffel transformation theorem (dikes and sills) or the 'method of images' with superposition (spheres). Comparison of these analytically determined heat flux distributions with field data from active geothermal areas at Yellowstone, Avachinsky volcano, Kilauea Iki,

333

Well Log Techniques At Coso Geothermal Area (1985) | Open Energy  

Open Energy Info (EERE)

Coso Geothermal Area (1985) Coso Geothermal Area (1985) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Well Log Techniques Activity Date 1985 Usefulness not indicated DOE-funding Unknown Exploration Basis Impact of long term testing on the well pressure Notes The downhole pressure monitoring equipment for each well included a stainless steel pressure chamber attached to a 0.25 inch stainless steel capillary tubing. The surface end of the capillary tubing was connected to a Paroscientific quartz pressure trandsducer. References Sanyal, S.; Menzies, A.; Granados, E.; Sugine, S.; Gentner, R. (20 January 1987) Long-Term Testing of Geothermal Wells in the Coso Hot Springs KGRA Retrieved from "http://en.openei.org/w/index.php?title=Well_Log_Techniques_At_Coso_Geothermal_Area_(1985)&oldid=600462

334

Operation Diagnostics: Use of Visualization Techniques and Operation  

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

Operation Diagnostics: Use of Visualization Techniques and Operation Operation Diagnostics: Use of Visualization Techniques and Operation Patterns to Verify and Optimize Dynamic Building and System Operation Speaker(s): Oliver Baumann Date: December 7, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Peng Xu Building automation systems (BAS) and building energy management systems (BEMS) have been used in modern edifices for the last 2 decades. These systems measure, process, and monitor a huge amount of data to operate the building and systems more or less properly. Often, the data is only used to signal failures or break-downs of systems or components. Further information of the data to analyze and diagnose the building operation is not used due to the lack of analysis methods and tools. Within the Operation Diagnostics, different visualization techniques are applied to

335

First fusion proton measurements in TEXTOR plasmas using activation technique  

SciTech Connect

MeV particle loss measurements from fusion plasmas, in particular alpha particles, remain difficult in large fusion devices and further R and D is needed for ITER. This paper describes the first attempt to measure 3 MeV escaping fusion protons emitted from TEXTOR tokamak plasmas using activation technique. This technique was successfully demonstrated, initially, in 2006 on the JET tokamak. An ion camera equipped with a collimator and several types of activation detectors was installed inside the TEXTOR vacuum vessel to perform these measurements. After irradiation, the detectors were analyzed using ultra low level gamma-ray spectrometry at the HADES underground laboratory. 3 MeV escaping fusion protons were detected in larger number -{approx}6 times more - compared to earlier measurements using this technique on JET. Another major progress was the reduction of the cooling time by a factor of 50, which made possible to detect radionuclides with half-life of less than 90 min.

Bonheure, G.; Wassenhove, G. Van [ERM-KMS, Trilateral Euregio Cluster, B-1000 Brussels (Belgium); Mlynar, J. [Association Euratom-IPP.CR, Institute of Plasma Physics AS CR, v.v.i., Za Slovankou 3, CZ-182 00 Praha 8 (Czech Republic); Hult, M.; Gonzalez de Orduna, R.; Lutter, G. [Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel (Belgium); Vermaercke, P. [SCK-CEN, Boeretang, B-2400 Mol (Belgium); Huber, A.; Schweer, B.; Esser, G.; Biel, W. [Forschungszentrum Juelich GmbH, Institut fuer Plasmaphysik, EURATOM-Assoziation, Trilateral Euregio Cluster, D-52425 Juelich (Germany)

2012-10-15T23:59:59.000Z

336

WTFMEA: a technique for failure prevention through global knowledge sharing  

Science Journals Connector (OSTI)

Failure Mode and Effect Analysis (FMEA) is a frequently employed technique to achieve continuous quality improvement through prevention of failures. Since the application of FMEA is largely restricted to design and production functions, an improved technique called Total Failure Mode and Effects Analysis (TFMEA) has been adopted in the research reported in this paper. Of late, organisations have been realising the importance of adopting Information Technology (IT) to enhance productivity in their operations. On realising its potential, IT has been tactically integrated with TFMEA to evolve a technique called Web-Based Total Failure Mode and Effects Analysis (WTFMEA). The functionality of WTFMEA has been explained using its screen outputs. The efforts made to practically validate WTFMEA are narrated. While concluding, the capabilities of WTFMEA in achieving continuous quality and productivity improvement through global knowledge sharing are enumerated. The limitations of WTFMEA and the ways of overcoming them in future are appraised.

C. Sudhahar; R. Suresh Premil Kumar; V. Senthil; S.R. Devadasan; R. Murugesh

2008-01-01T23:59:59.000Z

337

Doppler-free Yb spectroscopy with the fluorescence spot technique  

SciTech Connect

We demonstrate a simple technique to measure the resonant frequency of the 398.9-nm {sup 1}S{sub 0}{leftrightarrow}{sup 1}P{sub 1} transition for the different Yb isotopes. The technique, which works by observing and aligning fluorescence spots, has enabled us to measure transition frequencies and isotope shifts with an accuracy of 60 MHz. We provide wavelength measurements for the transition that differ from previously published work. Our technique also allows for the determination of Doppler-shifted transition frequencies for photoionization experiments when the atomic beam and the laser beam are not perpendicular and furthermore allows us to determine the average velocity of the atoms along the direction of the atomic beam.

Nizamani, Altaf H.; McLoughlin, James J.; Hensinger, Winfried K. [Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, East-Sussex, BN1 9QH (United Kingdom)

2010-10-15T23:59:59.000Z

338

Application of surface and bulk characterization techniques for coal preparation  

SciTech Connect

With the recent acceleration of development of surface-property-based processes for the beneficiation of ultrafine coal, it is essential to establish their underlying scientific principles and to develop mathematical models able to predict how the process will perform on an unknown coal. Various surface properties of importance, surface characterization techniques, and application of these techniques to coal are reviewed. Instrumental techniques used for analyzing bulk composition of organic and/or inorganic matter are also reviewed. The differences in coal and mineral matter properties are highlighted. The effect of particle history, including grinding and oxidation, on the surface properties of coal is discussed. The mechanisms of advanced physical beneficiation processes are reviewed, and the influence of surface properties on the effectiveness of separation between coal and the liberated mineral matter is discussed. Finally, recommendations for future areas of research are made. 121 refs., 19 figs., 17 tabs.

Gala, H.B. (Burns and Roe Services Corp., Pittsburgh, PA (USA)); Hucko, R.E. (USDOE Pittsburgh Energy Technology Center, PA (USA). Coal Preparation and Solids Transportation Div.)

1990-01-01T23:59:59.000Z

339

Digital Geologic Field Mapping Using Arcpad, In: Digital Mapping Techniques  

Open Energy Info (EERE)

Digital Geologic Field Mapping Using Arcpad, In: Digital Mapping Techniques Digital Geologic Field Mapping Using Arcpad, In: Digital Mapping Techniques '02- Workshop Proceedings Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Digital Geologic Field Mapping Using Arcpad, In: Digital Mapping Techniques '02- Workshop Proceedings Abstract Research into the practicality of digital mapping by Placer Dome Exploration identified hardware and software solutions to enhance the efficiency and accuracy of field work. The goal of the research was to find a lightweight hardware-software system that allows the user to build a digital map from field observations in much the same way as pen and paper methods. The focus of the research was to minimize the size and weight of computer systems. Systems identified consist of a wearable PC or handheld

340

Multi-spectral glucose sensing using a polarimetric differencing technique  

E-Print Network (OSTI)

rotation of the molecule are known, the concentration of the molecule in solution can be calculated. More on the theory of this technique will be discussed in chapter III. 13 Gillham was the first to develop a polarimetry technique using a Faraday..., 42]. March developed a two Faraday rotator system in which one was used for modulation and the second for feedback control. They were able to show system linearity for both hypo- and hyperglycemic ranges but were only able to obtain 53. 3 mg...

Michael, Mathew

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Difficulties applying recent blind source separation techniques to EEG and MEG  

E-Print Network (OSTI)

High temporal resolution measurements of human brain activity can be performed by recording the electric potentials on the scalp surface (electroencephalography, EEG), or by recording the magnetic fields near the surface of the head (magnetoencephalography, MEG). The analysis of the data is problematic due to the fact that multiple neural generators may be simultaneously active and the potentials and magnetic fields from these sources are superimposed on the detectors. It is highly desirable to un-mix the data into signals representing the behaviors of the original individual generators. This general problem is called blind source separation and several recent techniques utilizing maximum entropy, minimum mutual information, and maximum likelihood estimation have been applied. These techniques have had much success in separating signals such as natural sounds or speech, but appear to be ineffective when applied to EEG or MEG signals. Many of these techniques implicitly assume that the source distributions hav...

Knuth, Kevin H

2015-01-01T23:59:59.000Z

342

Determining Plutonium Mass in Spent Fuel with Nondestructive Assay Techniques -- Preliminary Modeling Results Emphasizing Integration among Techniques  

SciTech Connect

There are a variety of motivations for quantifying Pu in spent (used) fuel assemblies by means of nondestructive assay (NDA) including the following: strengthen the capabilities of the International Atomic Energy Agencies to safeguards nuclear facilities, quantifying shipper/receiver difference, determining the input accountability value at reprocessing facilities and providing quantitative input to burnup credit determination for repositories. For the purpose of determining the Pu mass in spent fuel assemblies, twelve NDA techniques were identified that provide information about the composition of an assembly. A key point motivating the present research path is the realization that none of these techniques, in isolation, is capable of both (1) quantifying the elemental Pu mass of an assembly and (2) detecting the diversion of a significant number of pins. As such, the focus of this work is determining how to best integrate 2 or 3 techniques into a system that can quantify elemental Pu and to assess how well this system can detect material diversion. Furthermore, it is important economically to down-select among the various techniques before advancing to the experimental phase. In order to achieve this dual goal of integration and down-selection, a Monte Carlo library of PWR assemblies was created and is described in another paper at Global 2009 (Fensin et al.). The research presented here emphasizes integration among techniques. An overview of a five year research plan starting in 2009 is given. Preliminary modeling results for the Monte Carlo assembly library are presented for 3 NDA techniques: Delayed Neutrons, Differential Die-Away, and Nuclear Resonance Fluorescence. As part of the focus on integration, the concept of"Pu isotopic correlation" is discussed and the role of cooling time determination.

Tobin, S. J.; Fensin, M. L.; Ludewigt, B. A.; Menlove, H. O.; Quiter, B. J.; Sandoval, N. P.; Swinhoe, M. T.; Thompson, S. J.

2009-08-03T23:59:59.000Z

343

Innovative Exploration Techniques for Geothermal Assessment at Jemez  

Open Energy Info (EERE)

Exploration Techniques for Geothermal Assessment at Jemez Exploration Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Innovative Exploration Techniques for Geothermal Assessment at Jemez Pueblo, New Mexico Project Type / Topic 1 Recovery Act: Geothermal Technologies Program Project Type / Topic 2 Validation of Innovative Exploration Technologies Project Description This collaborative project will perform the following tasks to fully define the nature and extent of the geothermal reservoir underlying the Jemez Reservation: - Conduct 1-6,000-scale geologic mapping of 6 mi2 surrounding the Indian Springs area. - Using the detailed geologic map, locate one N-S and two E-W seismic lines and run a seismic survey of 4 mi2; reduce and analyze seismic data using innovative high-resolution seismic migration imaging techniques developed by LANL, and integrate with 3-D audio-frequency MT/MT data acquired at the same area for fault and subsurface structure imaging and resource assessment.

344

SSRL Beam Lines by Technique | Stanford Synchrotron Radiation Lightsource  

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

Technique Technique SSRL Beam Line Map | Beam Lines by Number | SPEAR3 Parameters Supported Technique(s) Beam Line X-ray Absorption Spectroscopy Biological x-ray absorption spectroscopy 4-3, 7-3, 9-3, 14-3 Materials / catalysis / chemistry x-ray absorption spectroscopy 4-1, 4-3, 11-2, 14-3 MEIS x-ray absorption spectroscopy 4-1, 4-3, 11-2, 14-3 X-ray absorption spectroscopy imaging 2-3, 6-2a, 10-2a,14-3 Single crystal x-ray absorption spectroscopy 9-3 Grazing incidence x-ray absorption spectroscopy 11-2 Tender x-ray absorption spectroscopy 4-3, 14-3 Tender x-ray absorption spectroscopy imaging 14-3 Photoemission spectroscopy 8-1a, 8-1b, 8-2, 10-1, 13-2 X-ray absorption spectroscopy, near edge, soft energy 8-2, 10-1, 13-2 Elliptic polarization, soft energy photoemission spectroscopy 13-2

345

Cost Modeling and Design Techniques for Integrated Package Distribution Systems  

E-Print Network (OSTI)

Cost Modeling and Design Techniques for Integrated Package Distribution Systems Karen R. Smilowitz idealizations of network geometries, operating costs, demand and customer distributions, and routing patterns that approximate the total cost of operation. The design problem is then reduced to a series of optimization

Daganzo, Carlos F.

346

Final Report on Isotope Ratio Techniques for Light Water Reactors  

SciTech Connect

The Isotope Ratio Method (IRM) is a technique for estimating the energy or plutonium production in a fission reactor by measuring isotope ratios in non-fuel reactor components. The isotope ratios in these components can then be directly related to the cumulative energy production with standard reactor modeling methods.

Gerlach, David C.; Gesh, Christopher J.; Hurley, David E.; Mitchell, Mark R.; Meriwether, George H.; Reid, Bruce D.

2009-07-01T23:59:59.000Z

347

Investigative Tools and Techniques for Indoor Air Quality Studies  

E-Print Network (OSTI)

INVESTIGATIVE TOOLS AND TECHNIQUES FOR INDOOR AIR QUALITY STUDIES Steven R. Kennedy, C.E.P., REM, project Manager I C. Brandon ~uinn, P.E., C.P.G., Project Manager James E. Henderson, Ph. D., Director of ~nalytical services ' Robert G. ~ickery...

Kennedy, S. R.; Quinn, C. B.; Henderson, J. E.; Vickery, R. G.

1994-01-01T23:59:59.000Z

348

A second order autoregressive based technique for pipeline leak detection  

Science Journals Connector (OSTI)

Efficient leak detection techniques need to be characterized both by rapidity and robustness. This paper studies a simple detection method based on the second order autoregressive (AR) parameters of the pipeline signals- a trade-off between the two required ... Keywords: AR models, ROC curves, leak detection, pipeline monitoring

Marllene Daneti

2008-07-01T23:59:59.000Z

349

PART II TECHNIQUES PROJECT MODELLING OF THE CORROSION OF  

E-Print Network (OSTI)

- 1 - PART II TECHNIQUES PROJECT MODELLING OF THE CORROSION OF BINARY ALLOYS R.A. Jones Produced and temperatures. In this work a neural network method was employed to study how the rate of corrosion of Fe accordance with the literature. 1. Introduction The atmosphere is the corrosive environment to which alloys

Cambridge, University of

350

Food Consumption by Sea Lions: Existing Data and Techniques  

E-Print Network (OSTI)

Food Consumption by Sea Lions: Existing Data and Techniques Arliss J. Winship, Andrea M.J. Hunter on the quantity of food consumed by sea lions in captivity, and examined how consumption varied by species, body ranges of estimates of food consumption for sea lions that can be used in various modeling strategies

351

Fast Vectorless Power Grid Verification Using an Approximate Inverse Technique  

E-Print Network (OSTI)

Fast Vectorless Power Grid Verification Using an Approximate Inverse Technique Nahi H. Abdul Ghani Department of ECE University of Toronto Toronto, Ontario, Canada f.najm@utoronto.ca ABSTRACT Power grid Aids General Terms Performance, Algorithms, Verification Keywords Power grid, voltage drop, approximate

Najm, Farid N.

352

Level-Set Techniques Applied to Unsteady Detonation Propagation  

E-Print Network (OSTI)

Level-Set Techniques Applied to Unsteady Detonation Propagation D. Scott Stewart1 Tariq Aslam1 Jin. The detonation shock surface has been shown under certain circumstances to be governed by an intrinsic relation detonation theory, which summarizes our recent work in [2]. In Sect. 4, we briefly explain the derivation

Aslam, Tariq

353

LevelSet Techniques Applied to Unsteady Detonation Propagation  

E-Print Network (OSTI)

## Level­Set Techniques Applied to Unsteady Detonation Propagation D. Scott Stewart 1 Tariq Aslam 1­propagating surface. The detonation shock surface has been shown under certain circumstances to be governed, we discuss the specific example from detonation theory, which summarizes our recent work in [2

Aslam, Tariq

354

Building DomainSpecific Search Engines with Machine Learning Techniques  

E-Print Network (OSTI)

.netpart.com lets the user search over company pages by hostname, company name, and location. ffl wwwBuilding Domain­Specific Search Engines with Machine Learning Techniques Andrew McCallum zy Science Carnegie Mellon University Pittsburgh, PA 15213 Abstract Domain­specific search engines

McCallum, Andrew

355

Web data extraction, applications and techniques: A survey  

Science Journals Connector (OSTI)

Abstract Web Data Extraction is an important problem that has been studied by means of different scientific tools and in a broad range of applications. Many approaches to extracting data from the Web have been designed to solve specific problems and operate in ad-hoc domains. Other approaches, instead, heavily reuse techniques and algorithms developed in the field of Information Extraction. This survey aims at providing a structured and comprehensive overview of the literature in the field of Web Data Extraction. We provided a simple classification framework in which existing Web Data Extraction applications are grouped into two main classes, namely applications at the Enterprise level and at the Social Web level. At the Enterprise level, Web Data Extraction techniques emerge as a key tool to perform data analysis in Business and Competitive Intelligence systems as well as for business process re-engineering. At the Social Web level, Web Data Extraction techniques allow to gather a large amount of structured data continuously generated and disseminated by Web 2.0, Social Media and Online Social Network users and this offers unprecedented opportunities to analyze human behavior at a very large scale. We discuss also the potential of cross-fertilization, i.e., on the possibility of re-using Web Data Extraction techniques originally designed to work in a given domain, in other domains.

Emilio Ferrara; Pasquale De Meo; Giacomo Fiumara; Robert Baumgartner

2014-01-01T23:59:59.000Z

356

A pattern matching technique for measuring sediment displacement levels  

E-Print Network (OSTI)

of a vortex ring with a glass ballotini particle layer as the resuspension mechanism are described to test-intrusive measurements of changes in the depth of a layer of sedi- ment due to a resuspension event. The key focus here is on the measurement technique itself, rather than the dynamics of the resuspension event that motivated

Dalziel, Stuart

357

Development of Improved Oil Field Waste Injection Disposal Techniques  

SciTech Connect

The goals of this project have was to: (1) assemble and analyze a comprehensive database of past waste injection operations; (2) develop improved diagnostic techniques for monitoring fracture growth and formation changes; (3) develop operating guidelines to optimize daily operations and ultimate storage capacity of the target formation; and (4) to apply these improved models and guidelines in the field.

Terralog Technologies

2002-11-25T23:59:59.000Z

358

Universite Montpellier II Sciences et techniques du Languedoc  

E-Print Network (OSTI)

Universit´e Montpellier II Sciences et techniques du Languedoc Th`ese Pour obtenir le grade de´esident et rapporteur C. Cibils, directeur de Th`ese M.J. Redondo, rapporteur D. Guin, membre du jury 1 tel.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 II. Le radical de Jacobson et le th´eor`eme de Krull-Schmidt.. . . . . . . . . . . . .12 1/ Le

Boyer, Edmond

359

Laser sources and techniques for spectroscopy and dynamics  

SciTech Connect

This program focuses on the development of novel laser and spectroscopic techniques in the IR, UV, and VUV regions for studying combustion related molecular dynamics at the microscopic level. Laser spectroscopic techniques have proven to be extremely powerful in the investigation of molecular processes which require very high sensitivity and selectivity. The authors approach is to use quantum electronic and non-linear optical techniques to extend the spectral coverage and to enhance the optical power of ultrahigh resolution laser sources so as to obtain and analyze photoionization, fluorescence, and photoelectron spectra of jet-cooled free radicals and of reaction products resulting from unimolecular and bimolecular dissociations. New spectroscopic techniques are developed with these sources for the detection of optically thin and often short-lived species. Recent activities center on regenerative amplification of high resolution solid-state lasers, development of tunable high power mid-IR lasers and short-pulse UV/VUV tunable lasers, and development of a multipurpose high-order suppressor crossed molecular beam apparatus for use with synchrotron radiation sources. This program also provides scientific and technical support within the Chemical Sciences Division to the development of LBL`s Combustion Dynamics Initiative.

Kung, A.H. [Lawrence Berkeley Laboratory, CA (United States)

1993-12-01T23:59:59.000Z

360

Heart chambers and whole heart segmentation techniques: review  

E-Print Network (OSTI)

Heart chambers and whole heart segmentation techniques: review Dongwoo Kang Jonghye Woo Piotr J://electronicimaging.spiedigitallibrary.org/ on 01/15/2014 Terms of Use: http://spiedl.org/terms #12;Heart chambers and whole heart segmentation, and reproducible segmentation methods. Figure 1 illustrates an example of segmentation of heart on CT scan. A

Kuo, C.-C. "Jay"

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Chemical Investigations of Superheavy Elements - Current Results and New Techniques  

SciTech Connect

Chemical studies of the superheavy elements have progressed tremendously in recent years. This is illustrated here using the following four examples: (i) gas chemical studies of element 112, (ii) radiochemical investigations of the reaction 248Cm(26Mg,xn)274-xHs, (iii) complexation studies of rutherfordium, and (iv) the development of the technique of physical preseparation.

Duellmann, Christoph E. [Gesellschaft fuer Schwerionenforschung mbH, Planckstrasse 1, 64291 Darmstadt (Germany)

2007-02-26T23:59:59.000Z

362

Optimizing MATLAB feval with Dynamic Techniques Nurudeen Lameed Laurie Hendren  

E-Print Network (OSTI)

Optimizing MATLAB feval with Dynamic Techniques Nurudeen Lameed Laurie Hendren Sable Research Group,hendren}@cs.mcgill.ca, http://www.sable.mcgill.ca/mclab Abstract MATLAB is a popular dynamic array-based language used by en- gineers, scientists and students worldwide. The built-in function feval is an important MATLAB feature

363

SIMULATION TECHNIQUES IN HYPERSONIC LOW-DENSITY AEROTHERMODYNAMICS  

E-Print Network (OSTI)

SIMULATION TECHNIQUES IN HYPERSONIC LOW-DENSITY AEROTHERMODYNAMICS V. V. Riabov Rivier University, 420 South Main Street, Nashua, NH 03060, USA, vriabov@rivier.edu Hypersonic rarefied flows near-8] and hypersonic flights. The direct simulation Monte- Carlo (DSMC) method [9] is used to study the influence

Riabov, Vladimir V.

364

A TECHNIQUE FOR DIRECTLY MEASURING THE GRAVITATIONAL ACCELERATION OF ANTIHYDROGEN  

E-Print Network (OSTI)

, and the construction of the Low Energy An­ tiproton Ring (LEAR) at CERN has made it possible to trap substantial of antimatter (g) by measuring the deflection of a beam of neutral antihydrogen atoms in the Earth trapping techniques has made it possible to hold and cool particles (charged or neutral) 3

Phillips, Thomas J.

365

Integration of Ab Initio Nuclear Physics Calculations with Optimization Techniques  

E-Print Network (OSTI)

Integration of Ab Initio Nuclear Physics Calculations with Optimization Techniques Masha Sosonkina1 into the field of nuclear physics calculations where the objective functions are very complex and computationally the ab initio nuclear physics code MFDn and the VTDIRECT95 code for derivative-free op- timization. We

Sosonkina, Masha

366

Air management in a diesel engine using fuzzy control techniques  

Science Journals Connector (OSTI)

Air management for diesel engines is a major challenge from the control point of view because of the highly nonlinear behavior of this system. For this reason, linear control techniques are unable to provide the required performance, and nonlinear controllers ... Keywords: Diesel engines, Fuzzy systems, Identification, LMIs, Nonlinear control

S. Garca-Nieto; J. Salcedo; M. Martnez; D. Laur

2009-09-01T23:59:59.000Z

367

APPLICATION OF DATA ANALYSIS TECHNIQUES TO NUCLEAR REACTOR  

E-Print Network (OSTI)

1 APPLICATION OF DATA ANALYSIS TECHNIQUES TO NUCLEAR REACTOR SYSTEMS CODE ACCURACY ASSESSMENT the inherent safety (and concomitant code reliability and licensing) concerns associated with nuclear reactors) has been developed by the authors to provide quantitative comparisons between nuclear reactor systems

Kunz, Robert Francis

368

Cost Modeling and Design Techniques for Integrated Package Distribution Systems  

E-Print Network (OSTI)

Cost Modeling and Design Techniques for Integrated Package Distribution Systems Karen R. Smilowitz and Carlos F. Daganzo December 23, 2005 Abstract Complex package distribution systems are designed using-scale integrated distribution networks. While the network design problem is quite complex, we demonstrate

Smilowitz, Karen

369

Trace Environmental Quantitative Analysis: Principles, Techniques and Applications, 2nd  

E-Print Network (OSTI)

, California State UniVersity, Los Angeles JA0599418 10.1021/ja0599418 CRC Handbook of Chemistry and Physics and field- based techniques. Loconto's book does a superlative job of introducing the concept of trace edition of this famous handbook continues to provide up-to-date, critically evaluated chemical

Zubarev, Eugene

370

Applying a Pragmatics-Based Creativity-Fostering Technique to  

E-Print Network (OSTI)

Engineering and Creativity: An Innovative Approach Based on a Model of the Pragmatics of 1 #12;Applying EPMcreate (EPM Creative Requirements Engineering TEchnique) that consists of sixteen steps. In each step to foster creativity in requirements engineering are still under-appreciated [7] and under

Berry, Daniel M.

371

Friction Problems in Servomechanisms: Modeling and Compensation Techniques  

E-Print Network (OSTI)

Friction Problems in Servomechanisms: Modeling and Compensation Techniques Jan Tommy Gravdahl of this presentation Introduction Friction models 1. Static models 2. Models with time delay 3. Dynamic models Friction compensation 1. Non-model based compensation 2. Compensation based on static friction models 3

Gravdahl, Jan Tommy

372

Noise source identification techniques: simple to advanced applications  

E-Print Network (OSTI)

required. Practical application examples ranging from hearing aids to wind turbines are presented to optimise the noise emission from a wide range of products including vehicles, household goods and windNoise source identification techniques: simple to advanced applications K.B. Ginn and K. Haddad Br

Paris-Sud XI, Université de

373

Techniques for the evaluation of outgassing from polymeric wafer pods  

SciTech Connect

In recent years there has been increasing interest in using wafer-level isolation environments or pods (microenvironments) to provide a more controllable, cleaner wafer environment during wafer processing. It has been shown that pods can be effective in reducing the amount of particulate contamination on wafers during manufacturing. However, there have also been studies that indicate that pods and wafer boxes can be the source of condensible, molecular organic contamination. This paper summarizes the work that has been performed during the past year at Sandia National Laboratories` Contamination Free Manufacturing Research Center (CFMRC) on (1) devising standard, low-temperature, high sensitivity techniques to detect outgassing of volatile organic compounds (VOCs) from polymers used to construct wafer pods and (2) development of a technique that can be used to continuously measure the condensible contamination within pods so that the pod environment can be monitored during manufacturing. Although these techniques have been developed specifically for assessing contamination threats from wafer pods, they can be used to evaluate other potential contamination sources. The high sensitivity outgassing techniques can be used to evaluate outgassing of volatiles from other clean-room materials and the real-time outgassing sensor can be used to monitor contamination condensation in non-pod environments such as ballroom-type cleanrooms and minienvironments.

McIntyre, D.C.; Liang, A.; Thornberg, S.M.; Bender, S.F.; Lujan, R.D.; Blewer, R.S. [Sandia National Labs., Albuquerque, NM (United States); Bowers, W.D. [Femtometrics, Costa Mesa, CA (United States)

1994-03-01T23:59:59.000Z

374

Numerical simulation of cooling gas injection using adaptive multiscale techniques  

E-Print Network (OSTI)

focus on reducing this effects. Only very recently, active cooling strategies have been developed alsoNumerical simulation of cooling gas injection using adaptive multiscale techniques Wolfgang Dahmen Mathematik, RWTH Aachen, Templergraben 55, 52056 Aachen Abstract The interaction of a jet of cooling gas

375

Robust Neuroimaging-Based Classification Techniques of Autistic vs. Typically  

E-Print Network (OSTI)

abnormalities in several brain regions. Increased head size was the first observed characteristic in children1 Robust Neuroimaging-Based Classification Techniques of Autistic vs. Typically Developing Brain with autism. According to the published studies, different anatomical structures of the brain have been

Farag, Aly A.

376

Study of microfluidic measurement techniques using novel optical imaging diagnostics  

E-Print Network (OSTI)

is applied for a 3-D vector field mapping in a microscopic flow and a Brownian motion tracking of nanoparticles. This technique modifies OSSM system for a micro-fluidic experiment, and the imaging system captures a diffracted particle image having numerous...

Park, Jaesung

2007-04-25T23:59:59.000Z

377

Power Modeling and Thermal Management Techniques for Manycores  

E-Print Network (OSTI)

Power Modeling and Thermal Management Techniques for Manycores Rajib Nath Computer Science number of cores in manycore archi- tectures, along with technology scaling, results in high power in such processors, we need an accurate online estimate of the power consumption. In this paper, we present the first

Simunic, Tajana

378

Surgical implantation techniques for electronic tags in fish  

SciTech Connect

Intracoelomic implantation of transmitters into fish requires making a surgical incision, incision closure, and other surgery related techniques; however, the tools and techniques used in the surgical process vary widely. We review the available literature and focus on tools and techniques used for conducting surgery on juvenile salmonids because of the large amount of research that is conducted on them. The use of sterilized surgical instruments properly selected for a given size of fish will minimize tissue damage and infection rates, and speed the wound healing of fish implanted with transmitters. For the implantation of transmitters into small fish, the optimal surgical methods include making an incision on the ventral midline along the linea alba (for studies under 1 month), protecting the viscera (by lifting the skin with forceps while creating the incision), and using absorbable monofilament suture with a small-swaged-on swaged-on tapered or reverse-cutting needle. Standardizing the implantation techniques to be used in a study involving particular species and age classes of fish will improve survival and transmitter retention while allowing for comparisons to be made among studies and across multiple years. This review should be useful for researchers working on juvenile salmonids and other sizes and species of fish.

Wagner, Glenn N.; Cooke, Steven J.; Brown, Richard S.; Deters, Katherine A.

2011-01-01T23:59:59.000Z

379

Postcolumn Techniques: A Critical Perspective for Ion Chromatography  

Science Journals Connector (OSTI)

......sufficient stability during long-term storage to warrant their production as SRMs as...DTC. Applic ability of the technique to seawater was investigated. Cd, Pb, and Ni could...should be detectable. A pretreatment and storage procedure was developed for urine samples......

Purnendu K. Dasgupta

1989-08-01T23:59:59.000Z

380

A Transformed Lagged Ensemble Forecasting Technique for Increasing Ensemble Size  

E-Print Network (OSTI)

A Transformed Lagged Ensemble Forecasting Technique for Increasing Ensemble Size Andrew. R.Lawrence@ecmwf.int #12;Abstract An ensemble-based data assimilation approach is used to transform old en- semble. The impact of the transformations are propagated for- ward in time over the ensemble's forecast period

Hansens, Jim

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Development of Flexural Vibration Inspection Techniques to Rapidly  

E-Print Network (OSTI)

Development of Flexural Vibration Inspection Techniques to Rapidly Assess the Structural Health conditions at supports #12;Phase II Activities !! Develop an automated testing system !! Conduct vibration testing on bridge sections during construction !! Conduct load and vibration testing of in-service spike

Minnesota, University of

382

Plant Growth Measurement Techniques Using Near-Infrared  

E-Print Network (OSTI)

Plant Growth Measurement Techniques Using Near-Infrared Imagery Amr Aboelela John Barron Dept, for measuring plant growth for corn seedlings and Caster Oil Bean leaves. A near-infrared camera, which allows to hypothesize where growth might be taking place. Keywords: Near-Infrared Imagery, Corn Seedling stem

Barron, John

383

innovative techniques Near-infrared spiroximetry: noninvasive measurements  

E-Print Network (OSTI)

innovative techniques Near-infrared spiroximetry: noninvasive measurements of venous saturationO2 ) in tissues using near-infrared spectroscopy (NIRS). This method is based on the respiration-induced oscillations of the near-infrared ab- sorption in tissues, and we call it spiroximetry (the prefix spiro means

384

Data Analysis in the Radio Astr 257: Modern Astronomical Techniques  

E-Print Network (OSTI)

Data Analysis in the Radio Emma Storm Astr 257: Modern Astronomical Techniques May 28th, 2013 Storm (Astr257) Radio Data Analysis 05/28/13 1 / 36 #12;Radio Data Analysis interferometers measure antenna to raw, uncalibrated data need to manually calibrate image processing depends on science goals Storm

California at Santa Cruz, University of

385

EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques  

E-Print Network (OSTI)

;3 Screen Printed Solar Cells · Firing the contacts ­ The furnace heats the cell to a high temperature & Metal Closeup 14 Front and Back of Screen Printed Solar Cell 15 Crystallization Furnace for Ingot1 EELE408 Photovoltaics Lecture 16: Silicon Solar Cell Fabrication Techniques Dr. Todd J. Kaiser

Kaiser, Todd J.

386

Synthetic aperture focusing techniques for ultrasonic imaging of solid objects.  

E-Print Network (OSTI)

technique (SAFT) has been used in non-destructive testing mainly in its simplest form that mimics acoustic a review of SAFT algorithms applied for post-processing of ultrasonic data acquired in non-destructive inspection of metals. The performance of SAFT in terms of its spatial resolution and suppression

387

GREAT LAKES COASTAL WETLANDS MONITORING AND ASSESSMENT TECHNIQUES  

E-Print Network (OSTI)

GREAT LAKES COASTAL WETLANDS MONITORING AND ASSESSMENT TECHNIQUES By KRISTINA KOSTUK, B OF SCIENCE (2006) McMaster University (Biology) Hamilton, Ontario TITLE: Great Lakes Coastal Wetlands coastal wetlands. The first chapter examines the influence of gear type and sampling protocol on fish

McMaster University

388

Investigation of novel geophysical techniques for monitoring CO2 movement during sequestration  

SciTech Connect

Cost effective monitoring of reservoir fluid movement during CO{sub 2} sequestration is a necessary part of a practical geologic sequestration strategy. Current petroleum industry seismic techniques are well developed for monitoring production in petroleum reservoirs. The cost of time-lapse seismic monitoring can be born because the cost to benefit ratio is small in the production of profit making hydrocarbon. However, the cost of seismic monitoring techniques is more difficult to justify in an environment of sequestration where the process produces no direct profit. For this reasons other geophysical techniques, which might provide sufficient monitoring resolution at a significantly lower cost, need to be considered. In order to evaluate alternative geophysical monitoring techniques we have undertaken a series of numerical simulations of CO{sub 2} sequestration scenarios. These scenarios have included existing projects (Sleipner in the North Sea), future planned projects (GeoSeq Liberty test in South Texas and Schrader Bluff in Alaska) as well as hypothetical models based on generic geologic settings potentially attractive for CO{sub 2} sequestration. In addition, we have done considerable work on geophysical monitoring of CO{sub 2} injection into existing oil and gas fields, including a model study of the Weyburn CO{sub 2} project in Canada and the Chevron Lost Hills CO{sub 2} pilot in Southern California (Hoversten et al. 2003). Although we are specifically interested in considering ''novel'' geophysical techniques for monitoring we have chosen to include more traditional seismic techniques as a bench mark so that any quantitative results derived for non-seismic techniques can be directly compared to the industry standard seismic results. This approach will put all of our finding for ''novel'' techniques in the context of the seismic method and allow a quantitative analysis of the cost/benefit ratios of the newly considered methods compared to the traditional, more expensive, seismic technique. The Schrader Bluff model was chosen as a numerical test bed for quantitative comparison of the spatial resolution of various geophysical techniques being considered for CO{sub 2} sequestration monitoring. We began with a three dimensional flow simulation model provided by BP Alaska of the reservoir and developed a detailed rock-properties model from log data that provides the link between the reservoir parameters (porosity, pressure, saturations, etc.) and the geophysical parameters (velocity, density, electrical resistivity). The rock properties model was used to produce geophysical models from the flow simulations.

Hoversten, G. Michael; Gasperikova, Erika

2003-10-31T23:59:59.000Z

389

Design Techniques for High Speed Low Voltage and Low Power Non-Calibrated Pipeline Analog to Digital Converters  

E-Print Network (OSTI)

DESIGN TECHNIQUES FOR HIGH SPEED LOW VOLTAGE AND LOW POWER NON-CALIBRATED PIPELINE ANALOG TO DIGITAL CONVERTERS A Dissertation by RIDA SHAWKY ASSAAD Submitted to the Office of Graduate Studies of Texas A&M University... in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY December 2009 Major Subject: Electrical Engineering DESIGN TECHNIQUES FOR HIGH SPEED LOW VOLTAGE AND LOW POWER NON-CALIBRATED PIPELINE ANALOG TO DIGITAL...

Assaad, Rida Shawky

2011-02-22T23:59:59.000Z

390

Signal Processing Techniques for Data Reduction and Event Recognition in Cough Counting.  

E-Print Network (OSTI)

??This thesis presents novel techniques for the reduction of audio recordings and signal processing techniques as part of cough recognition. Evidence collected shows the reduction (more)

Barton, Antony James

2013-01-01T23:59:59.000Z

391

E-Print Network 3.0 - artificial vision technique Sample Search...  

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

for: artificial vision technique Page: << < 1 2 3 4 5 > >> 1 The Department of computer Summary: of advanced computing issues, as they are, techniques of Artificial...

392

E-Print Network 3.0 - angular correlation technique Sample Search...  

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

Collection: Geosciences 2 MIMO CAPACITY OF MULTIPATH-CLUSTERED CHANNELS USING FOURIER TRANSFORM TECHNIQUES Summary: Fourier transform techniques, it is shown that the spatial...

393

Microfluidic advantage : novel techniques for protein folding and oxygen control in cell cultures  

E-Print Network (OSTI)

Novel Techniques for Protein Folding and Oxygen Control inTemperature Jump System to Study Fast Protein FoldingNovel Techniques for Protein Folding and Oxygen Control in

Polinkovsky, Mark E.; Polinkovsky, Mark E.

2012-01-01T23:59:59.000Z

394

E-Print Network 3.0 - advanced measurement techniques Sample...  

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

measurement techniques Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced measurement techniques Page: << < 1 2 3 4 5 > >> 1 Advanced...

395

E-Print Network 3.0 - advanced control techniques Sample Search...  

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

techniques Search Powered by Explorit Topic List Advanced Search Sample search results for: advanced control techniques Page: << < 1 2 3 4 5 > >> 1 Advanced Photogrammetric and...

396

ARM - Publications: Science Team Meeting Documents: A Bootstrap Technique  

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

A Bootstrap Technique for Testing the Relationship between Local-Scale A Bootstrap Technique for Testing the Relationship between Local-Scale Radar Observations of Cloud Occurrence and Large-Scale Atmospheric Fields Marchand, Roger Pacific Northwest National Laboratory Beagley, Nathaniel Pacific Northwest National Laboratory Ackerman, Thomas DOE/Pacific Northwest National Laboratory Limitations in the ability of Global Climate Models (GCMs) to predict clouds create significant uncertainties in predicting and understanding climate. Comparison studies have demonstrated that clouds are among the largest source of uncertainty in global climate model simulations [Cess et al., 1990; Potter and Cess, 2003]. Comparisons of model output and observational data generally require averaging (or aggregating) the observations in an attempt to put them on the same large spatial scale as

397

Techniques and Technologies for Field Detection of Asbestos Containing Materials  

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

DOE-Environmental Management DOE-Complex Wide Techniques and Technologies for Field Detection of Asbestos Containing Materials Challenge Asbestos has been used in numerous applications at DOE sites including sprayed-on fireproofing, asphalt and vinyl floor tile, and asbestos-cement (transite) siding. Inhalation of asbestos can result in non-malignant asbestosis, lung cancer and mesothelioma in workers. Currently, 40 CFR 763, Subpart E requires a certain number of bulk samples of suspected asbestos-containing material (ACM) to be collected within each designated homogeneous area (HA). If real time (or near-real), in-situ detection techniques/technologies of  5, and preferably  3 weight percent asbestos, were available, sample numbers

398

THERMOANALYTICAL TECHNIQUES P. J. Nigrey O S T I  

Office of Scientific and Technical Information (OSTI)

THERMOANALYTICAL TECHNIQUES THERMOANALYTICAL TECHNIQUES \ P. J. Nigrey O S T I Sandia National Laboratories, Department 6342MS0717, Albuquerque, NM 87 185-07 17 SUMMARY In this study, Thermogravimetric Analysis (TGA) has been used to study silicone, Viton and Ethylene Propylene (EPDM) rubber. The studies have shown that TGA accurately predicts the relative order of thermo-oxidative stability of these three materials from the calculated -activation energies. As expected, the greatest thermal stability was found in silicone rubber followed by Viton and EPDM rubber. The calculated lifetimes for these materials were i n relatively close agreement with published values. The preliminary results also accurately reflect decreased thermal stability and lifetime for EPDM rubber exposed to radiation and

399

TECHNIQUES AND CAPABILITIES APPLICATIONS SPECIFIC PROJECTS / ADDITIONAL INFORMATION  

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

TECHNIQUES AND CAPABILITIES TECHNIQUES AND CAPABILITIES APPLICATIONS SPECIFIC PROJECTS / ADDITIONAL INFORMATION * Source: 2 ID - EPU 105 (3 m, PM , 20-200 eV) EPU 56 (3 m PM, 200-2000 eV) * High-Resolution Angular Resolved Photoemission Scanning Microscopy (µ-ARPES): 20-1500 eV, 1 µm, < 1 meV, <0.1 o , 5-2000 K * Ambient Pressure Scanning Photoelectron Microscopy (AP- SPEM): 200-1800 eV, < 300 nm, 10 +3 Torr * Low-Energy Electron Microscopy & X-ray Photoemission Electron Microscopy (LEEM/XPEEM): 20 - 1800 eV, < 10 nm, high- transmission aberration correction µ-SP-ARPES: Momentum-resolved electronic structurelectronic bands of magnetic materials and non- magnetic materials with le of solids; spin-polarized arge spin-orbit interaction; a 1 µm spot from NSLS-

400

SCUBA TECHNIQUES USED IN RISK ASSESSMENT OF POSSIBLE NUCLEAR  

Office of Legacy Management (LM)

SCUBA TECHNIQUES USED IN RISK ASSESSMENT OF POSSIBLE NUCLEAR SCUBA TECHNIQUES USED IN RISK ASSESSMENT OF POSSIBLE NUCLEAR LEAKAGE AROUND AMCHITKA ISLAND, ALASKA Stephen Jewett, Max Hoberg, Heloise Chenelot, Shawn Harper Institute of Marine Science, University of Alaska Fairbanks, Fairbanks, AK 99775-7220 Joanna Burger Division of Life Sciences, Consortium for Risk Evaluation with Stakeholder Participation (CRESP), and Environmental and Occupational Health Sciences Institute (EOHSI), 604 Allison Road, Rutgers University, Piscataway, New Jersey 08854-8082 Michael Gochfeld, CRESP and EOHSI, UMDNJ-Robert Wood Johnson Medical School, Piscataway, New Jersey 08854 Abstract Amchitka Island, in the Aleutians, had three underground nuclear tests (1 965 to 1971) ranging from approximately 80 kilotons to 5 megatons. Initial surveys (1960s-1970s) did

Note: This page contains sample records for the topic "techniques electrical techniques" 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

On the selection of dimension reduction techniques for scientific applications  

SciTech Connect

Many dimension reduction methods have been proposed to discover the intrinsic, lower dimensional structure of a high-dimensional dataset. However, determining critical features in datasets that consist of a large number of features is still a challenge. In this paper, through a series of carefully designed experiments on real-world datasets, we investigate the performance of different dimension reduction techniques, ranging from feature subset selection to methods that transform the features into a lower dimensional space. We also discuss methods that calculate the intrinsic dimensionality of a dataset in order to understand the reduced dimension. Using several evaluation strategies, we show how these different methods can provide useful insights into the data. These comparisons enable us to provide guidance to a user on the selection of a technique for their dataset.

Fan, Y J; Kamath, C

2012-02-17T23:59:59.000Z

402

Optical fiber technique as a tool to improve combustion efficiency  

SciTech Connect

A multi-optical fiber technique is presented, which enables one to detect the flame propagation during non-knocking and knocking conditions in real production engines. The measurement technique is appropriate to detect knock onset locations and to describe the propagation of knocking reaction fronts. With this knowledge, the combustion chamber shape can be optimized, leading to a better knock resistance and higher combustion efficiencies. Results of flame propagation under non-knocking and knocking engine operating conditions are presented. In addition, correlations between knock onset locations and areas in which knock damage occurs are shown for different engines. Presented are the effects of combustion chamber modifications on the combustion efficiency, based on the analysis of the optical fiber measurements.

Spicher, U.; Krebs, R.

1990-01-01T23:59:59.000Z

403

The application of molecular genetics techniques to bioremediation processes  

SciTech Connect

Bioremediation is a process in which microorganisms are used to degrade toxic compounds. This technology has been used successfully to clean up a number of organic wastes including diesel fuel and creosote. Due to the increasingly stringent regulations affecting contaminated sites, a number of new technologies are being pursued that attempt to remediate wastes in situ, thus leaving the wastes undisturbed. One such pursuit has led to the proposal that molecular genetic techniques can be used to assess the genetic ecology of a contaminated waste site and that, subsequently, one can manipulate the indigenous microbial population so as to increase the biodegradation rate. Such a technology is heavily dependent on molecular genetic technique such as gene probing to determine the presence, distribution and ability of microbial genes to be expressed/amplified in the contaminated soil or water matrix. 117 refs., 14 figs., 13 tabs.

Alpert, S. (Alpert (S.), Palo Alto, CA (USA))

1989-12-01T23:59:59.000Z

404

Techniques for estimating flood hydrographs for ungaged urban watersheds  

SciTech Connect

The Clark Method, modified slightly, was used to develop a synthetic dimensionless hydrograph that can be used to estimate flood hydrographs for ungaged urban watersheds. Application of the technique results in a typical (average) flood hydrograph for a given peak discharge. Input necessary to apply the technique is an estimate of basin lagtime and the recurrence interval peak discharge. Equations for this purpose were obtained from a recent nationwide study on flood frequency in urban watersheds. A regression equation was developed which relates flood volumes to drainage area size, basin lagtime, and peak discharge. This equation is useful where storage of floodwater may be a part of design or flood prevention. 6 refs., 17 figs., 5 tabs.

Stricker, V.A.; Sauer, V.B.

1982-04-01T23:59:59.000Z

405

Intermediate Strain-Rate Loading - Techniques and Applications  

SciTech Connect

A new test methodology is described which allows access to loading rates that lie between split Hopkinson bar and shock-loading techniques. Gas gun experiments combined with velocity interferometry techniques have been used to experimentally determine the intermediate strain-rate loading behavior of Coors AD995 alumina and Cercom silicon-carbide rods. Graded-density materials have been used as impactors; thereby eliminating the tension states generated by the radial stress components during the loading phase. Results of these experiments demonstrate that the time-dependent stress pulse generated during impact allows an efficient transition from the initial uniaxial strain loading to a uniaxial stress state as the stress pulse propagates through the rod. This allows access to intermediate loading rates over 5 x 10{sup 3}/s to a few times 10{sup 4}/s.

Chhabildas, L.C.; Reinhart, W.D.; Holland, K.G.

1999-07-22T23:59:59.000Z

406

New Technique for Proposing Network's Topology using GPS and GIS  

E-Print Network (OSTI)

The problem of proposed topology for network comes when using Prim's algorithm with default distance (unrealistic distances) between network's nodes and don't care about the lakes, high hills, buildings, etc. This problem will cause incorrect estimations for cost (budget) of requirements like the media (optic fibre) and the number or type of Access-points, regenerator, Optic Amplifier, etc. This paper proposed a new technique of implementing Prim's algorithm to obtain realistic topology using realistic distances between network's nodes via Global Positioning System GPS and Geographic Information Systems GIS packages. Applying the new technique on academic institutes network of Erbil city from view of media (optic fibre) shows that there is disability in cost (budget) of the media which is needed (nearly) 4 times if implement default Prim's algorithm (don't using GPS & GIS) base on unrealistic distances between the nodes.

Ismaeel, Ayad Ghany

2012-01-01T23:59:59.000Z

407

Advisory Group On The Application Of Nuclear Techniques To Geothermal  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Advisory Group On The Application Of Nuclear Techniques To Geothermal Studies-Meeting In Pisa 8-12 Sep 1975 Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Advisory Group On The Application Of Nuclear Techniques To Geothermal Studies-Meeting In Pisa 8-12 Sep 1975 Details Activities (1) Areas (1) Regions (0) Abstract: Meeting proceedings - large list of papers and presentations dealing mostly with various isotopic analyses and their applications to geothermal exploration and characterization. Author(s): Unknown Published: Geothermics, Date Unknown

408

Novel nuclear magnetic resonance techniques for studying biological molecules  

SciTech Connect

Over the fifty-five year history of Nuclear Magnetic Resonance (NMR), considerable progress has been made in the development of techniques for studying the structure, function, and dynamics of biological molecules. The majority of this research has involved the development of multi-dimensional NMR experiments for studying molecules in solution, although in recent years a number of groups have begun to explore NMR methods for studying biological systems in the solid-state. Despite this new effort, a need still exists for the development of techniques that improve sensitivity, maximize information, and take advantage of all the NMR interactions available in biological molecules. In this dissertation, a variety of novel NMR techniques for studying biomolecules are discussed. A method for determining backbone ({phi}/{psi}) dihedral angles by comparing experimentally determined {sup 13}C{sub a}, chemical-shift anisotropies with theoretical calculations is presented, along with a brief description of the theory behind chemical-shift computation in proteins and peptides. The utility of the Spin-Polarization Induced Nuclear Overhauser Effect (SPINOE) to selectively enhance NMR signals in solution is examined in a variety of systems, as are methods for extracting structural information from cross-relaxation rates that can be measured in SPINOE experiments. Techniques for the production of supercritical and liquid laser-polarized xenon are discussed, as well as the prospects for using optically pumped xenon as a polarizing solvent. In addition, a detailed study of the structure of PrP 89-143 is presented. PrP 89-143 is a 54 residue fragment of the prion proteins which, upon mutation and aggregation, can induce prion diseases in transgenic mice. Whereas the structure of the wild-type PrP 89-143 is a generally unstructured mixture of {alpha}-helical and {beta}-sheet conformers in the solid state, the aggregates formed from the PrP 89-143 mutants appear to be mostly {beta}-sheet.

Laws, David D.

2000-06-01T23:59:59.000Z

409

An Exploration of Multi-touch Interaction Techniques  

E-Print Network (OSTI)

) or not (uncaptured). . . . . . . . . . . . . . . . . . . . . . 12 2.4 Kruger et al. [63] present a single touch technique for integrated ro- tation and translation. Touches in the circle perform only translation. 14 2.5 ?Bumptop?, a physically based desktop....3 Components of the prototype: (a)index slider to perform adjustment of the parameter (b) finger pad to alter the selection of parameters (c) palm support to avoid erroneous touches, and (d) visual feedback of the currently selected parameters (parameter...

Damaraju Sriranga, Sashikanth Raju

2013-08-16T23:59:59.000Z

410

Improved LWR Cladding Performance by EPD Surface Modification Technique  

SciTech Connect

This project will utilize the electro-phoretic deposition technique (EPD) in conjunction with nanofluids to deposit oxide coatings on prototypic zirconium alloy cladding surfaces. After demonstrating that this surface modification is reproducible and robust, the team will subject the modified surface to boiling and corrosion tests to characterize the improved nucleate boiling behavior and superior corrosion performance. The scope of work consists of the following three tasks: The first task will employ the EPD surface modification technique to coat the surface of a prototypic set of zirconium alloy cladding tube materials (e.g. Zircaloy and advanced alloys such as M5) with a micron-thick layer of zirconium oxide nanoparticles. The team will characterize the modified surface for uniformity using optical microscopy and scanning-electron microscopy, and for robustness using standard hardness measurements. After zirconium alloy cladding samples have been prepared and characterized using the EPD technique, the team will begin a set of boiling experiments to measure the heat transfer coefficient and critical heat flux (CHF) limit for each prepared sample and its control sample. This work will provide a relative comparison of the heat transfer performance for each alloy and the surface modification technique employed. As the boiling heat transfer experiments begin, the team will also begin corrosion tests for these zirconium alloy samples using a water corrosion test loop that can mimic light water reactor (LWR) operational environments. They will perform extended corrosion tests on the surface-modified zirconium alloy samples and control samples to examine the robustness of the modified surface, as well as the effect on surface oxidation

Michael Corradini; Kumar Sridharan

2012-11-26T23:59:59.000Z

411

Comparative cytotaxonomy in the tribe Bovini studied by banding techniques  

E-Print Network (OSTI)

Committee: Dr. James E. Womack Chromosomes of eight species of the tribe Bovini were studied by G ? banding, C ? banding and silver staining techniques. The results of this comparative cytogenetic study support the theory that Robertsonian fusion... in the tribe Bovini whose species appear to differ by a series of centromeric fusions. The phylogenetic tree derived from the cytogenetic data of this study is not consistent with morphological and behavioral trees previously described for the tribe Bovini...

Rich, Donna Carol

2012-06-07T23:59:59.000Z

412

A VSP transformation technique for the determination of subsurface structure  

E-Print Network (OSTI)

is the dominant wavelength. With the surface reflection profiling technique, resolution typically ranges from tens to hundreds of meters. With this degree of resolution, a detailed understanding of the subsurface is hard to achieve, In a vertical seismic... Chairman of Advisory Committee: Dr. Terry W. Spencer An algorithm was developed which transforms a vertical seismic profile (VSP) from the time-depth domain into the offset-time domain. The procedure operates by calculating the dips of the reflectors...

Malloy, Jeffrey Edward

2012-06-07T23:59:59.000Z

413

Nonlinear system identification using the MRAS technique and hyperstability concepts  

E-Print Network (OSTI)

is presented. The algorithm is theoretically derived and proved hyperstable by extension of previous linear, hyperstabie response error MRAS identification techniques. Generalization and unification of pre- vious empirical nonlinear identification... Identification - Application of Hyperstability An important MRAS identification approach is known as "parallel MRAS" or response error (RE), Fig. 4. This method of identification was developed by Landau [17-18], Hang [15-16], and Johnson [19...

Schatte, Alvin Robert

1982-01-01T23:59:59.000Z

414

Essays on Incorporating Risk Modeling Techniques in Agriculture  

E-Print Network (OSTI)

foundation for expanding the standard single period portfolio optimization problem to multi-periods. This modeling technique also provides a framework to analyze other farm financial decisions, farm growth decisions, and even could be applied to loan... and return on assets when compared to industrially diversified firms. Results from previous studies in non-agriculture sectors suggest there are possible gains from geographic diversification. 11 Within an agricultural setting, results of studies...

Larsen, Ryan A.

2012-10-19T23:59:59.000Z

415

3 - Nanoparticle exposure assessment: methods, sampling techniques, and data analysis  

Science Journals Connector (OSTI)

Abstract: Nanotechnology is now applied to many industries, resulting in a wide range of nanomaterial-containing products, such as electronic components, cosmetics, medicines, vehicles, and home appliances. Nanoparticles can be released throughout the life cycle of nanoproducts, including manufacture, consumer use, and disposal, thereby involving workers, consumers, and the environment in potential exposure. However, there is no current consensus on the best sampling method for characterizing manufactured nanoparticle exposure. Therefore, this chapter addresses nanoparticle exposure assessment methods, sampling techniques, and data analysis.

I.J. Yu; G. Ichihara; K. Ahn

2014-01-01T23:59:59.000Z

416

Synthesis of zirconium oxide nanoparticle by sol-gel technique  

SciTech Connect

Zirconium oxide nanoparticle is synthesized using sol-gel technique. Various mole ratio of ammonia solution and nitric acid relative to zirconium propoxide is added in the reaction to study the effect on the crystallinity and particle size on zirconium oxide particle. Zirconium oxide synthesized with nitric acid have the smallest particle size under FESEM image and show the increasing formation of crystalline tetragonal phase under XRD diffractogram.

Lim, H. S.; Ahmad, A.; Hamzah, H. [School of Chemical Science and Food Technology, Faculty of Science and Technology, National University of Malaysia, 43600 Bangi (Malaysia)

2013-11-27T23:59:59.000Z

417

Multiple-energy Techniques in Industrial Computerized Tomography  

DOE R&D Accomplishments (OSTI)

Considerable effort is being applied to develop multiple-energy industrial CT techniques for materials characterization. Multiple-energy CT can provide reliable estimates of effective Z (Z{sub eff}), weight fraction, and rigorous calculations of absolute density, all at the spatial resolution of the scanner. Currently, a wide variety of techniques exist for CT scanners, but each has certain problems and limitations. Ultimately, the best multi-energy CT technique would combine the qualities of accuracy, reliability, and wide range of application, and would require the smallest number of additional measurements. We have developed techniques for calculating material properties of industrial objects that differ somewhat from currently used methods. In this paper, we present our methods for calculating Z{sub eff}, weight fraction, and density. We begin with the simplest case -- methods for multiple-energy CT using isotopic sources -- and proceed to multiple-energy work with x-ray machine sources. The methods discussed here are illustrated on CT scans of PBX-9502 high explosives, a lexan-aluminum phantom, and a cylinder of glass beads used in a preliminary study to determine if CT can resolve three phases: air, water, and a high-Z oil. In the CT project at LLNL, we have constructed several CT scanners of varying scanning geometries using {gamma}- and x-ray sources. In our research, we employed two of these scanners: pencil-beam CAT for CT data using isotopic sources and video-CAT equipped with an IRT micro-focal x-ray machine source.

Schneberk, D.; Martz, H.; Azevedo, S.

1990-08-01T23:59:59.000Z

418

Validation of transport models using additive flux minimization technique  

SciTech Connect

A new additive flux minimization technique is proposed for carrying out the verification and validation (V and V) of anomalous transport models. In this approach, the plasma profiles are computed in time dependent predictive simulations in which an additional effective diffusivity is varied. The goal is to obtain an optimal match between the computed and experimental profile. This new technique has several advantages over traditional V and V methods for transport models in tokamaks and takes advantage of uncertainty quantification methods developed by the applied math community. As a demonstration of its efficiency, the technique is applied to the hypothesis that the paleoclassical density transport dominates in the plasma edge region in DIII-D tokamak discharges. A simplified version of the paleoclassical model that utilizes the Spitzer resistivity for the parallel neoclassical resistivity and neglects the trapped particle effects is tested in this paper. It is shown that a contribution to density transport, in addition to the paleoclassical density transport, is needed in order to describe the experimental profiles. It is found that more additional diffusivity is needed at the top of the H-mode pedestal, and almost no additional diffusivity is needed at the pedestal bottom. The implementation of this V and V technique uses the FACETS::Core transport solver and the DAKOTA toolkit for design optimization and uncertainty quantification. The FACETS::Core solver is used for advancing the plasma density profiles. The DAKOTA toolkit is used for the optimization of plasma profiles and the computation of the additional diffusivity that is required for the predicted density profile to match the experimental profile.

Pankin, A. Y.; Kruger, S. E. [Tech-X Corporation, 5621 Arapahoe Ave., Boulder, Colorado 80303 (United States)] [Tech-X Corporation, 5621 Arapahoe Ave., Boulder, Colorado 80303 (United States); Groebner, R. J. [General Atomics, San Diego, California 92121 (United States)] [General Atomics, San Diego, California 92121 (United States); Hakim, A. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States); Kritz, A. H.; Rafiq, T. [Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015 (United States)] [Department of Physics, Lehigh University, Bethlehem, Pennsylvania 18015 (United States)

2013-10-15T23:59:59.000Z

419

Evaluation of flow capture techniques for measuring HVAC grilleairflows  

SciTech Connect

This paper discusses the accuracy of commercially available flow hoods for residential applications. Results of laboratory and field tests indicate these hoods can be inadequate to measure airflows in residential systems, and there can be large measurement discrepancies between different flow hoods. The errors are due to poor calibrations, sensitivity of the hoods to grille airflow non-uniformities, and flow changes from added flow resistance. It is possible to obtain reasonable results using some flow hoods if the field tests are carefully done, the grilles are appropriate, and grille location does not restrict flow hood placement. We also evaluated several simple flow capture techniques for measuring grille airflows that could be adopted by the HVAC industry and homeowners as simple diagnostics. These simple techniques can be as accurate as commercially available devices. Our test results also show that current calibration procedures for flow hoods do not account for field application problems. As a result, agencies such as ASHRAE or ASTM need to develop a new standard for flow hood calibration, along with a new measurement standard to address field use of flow capture techniques.

Walker, Iain S.; Wray, Craig P.

2002-11-01T23:59:59.000Z

420

A survey of reflectometry techniques with applications to TFTR  

SciTech Connect

This report presents a review of reflectometry with particular attention to eXtraordinary mode (X-mode) reflectometry using the novel technique of dual frequency differential phase. The advantage of using an X-mode wave is that it can probe the edge of the plasma with much higher resolution and using a much smaller frequency range than with the Ordinary mode (O-Mode). The general problem with previous full phase reflectometry techniques is that of keeping track of the phase (on the order of 1000 fringes) as the frequency is swept over the band. The dual frequency phase difference technique has the advantage that since it is keeping track of the phase difference of two frequencies with a constant frequency separation, the fringe counting is on the order of only 3 to 5 fringes. This fringe count, combined with the high resolution of the X-mode wave and the small plasma access requirements of reflectometry, make X-mode reflectometry a very attractive diagnostic for today`s experiments and future fusion devices.

Collazo, I.; Stacey, W.M. [Georgia Inst. of Tech., Atlanta, GA (United States); Wilgen, J.; Hanson, G.; Bigelow, T.; Thomas, C.E. [Oak Ridge National Lab., TN (United States); Bretz, N. [Princeton Univ., NJ (United States). Plasma Physics Lab.

1993-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "techniques electrical techniques" from the National Library of EnergyBeta (NLEBeta).
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421

Pinch technique and the Batalin-Vilkovisky formalism  

Science Journals Connector (OSTI)

In this paper we take the first step towards a nondiagrammatic formulation of the pinch technique. In particular we proceed into a systematic identification of the parts of the one-loop and two-loop Feynman diagrams that are exchanged during the pinching process in terms of unphysical ghost Greens functions; the latter appear in the standard Slavnov-Taylor identity satisfied by the tree-level and one-loop three-gluon vertex. This identification allows for the consistent generalization of the intrinsic pinch technique to two loops, through the collective treatment of entire sets of diagrams, instead of the laborious algebraic manipulation of individual graphs, and sets up the stage for the generalization of the method to all orders. We show that the task of comparing the effective Greens functions obtained by the pinch technique with those computed in the background field method Feynman gauge is significantly facilitated when employing the powerful quantization framework of Batalin and Vilkovisky. This formalism allows for the derivation of a set of useful nonlinear identities, which express the background field method Greens functions in terms of the conventional (quantum) ones and auxiliary Greens functions involving the background source and the gluonic antifield; these latter Greens functions are subsequently related by means of a Schwinger-Dyson type of equation to the ghost Greens functions appearing in the aforementioned Slavnov-Taylor identity.

Daniele Binosi and Joannis Papavassiliou

2002-07-30T23:59:59.000Z

422

Radiographic Technique for Densitometric Studies Using Heavy Ion Microbeams  

SciTech Connect

Different analytical techniques are typically used to perform multi-elemental and densitometric analysis by means of particle beams with micrometric space resolution. Usually, those analyses are respectively performed by PIXE and STIM. Traditionally, to characterize the trace element concentrations in a specimen two different experiments are required with differences in setups and types of detectors employed, as well as in the necessary ion current intensities. In this work, we discuss the latest results in the development of a new technique that synthesizes both analyses in just a single one, by means of heavy ion induced x-ray emission. This technique, implemented for the first time at the Tandar Laboratory, employs a second target in addition to the sample under study. The multi-elemental information of the specimen is provided by its PIXE signal and its densitometric information is supplied by the PIXE signal of the secondary target, which is placed immediately behind the sample under analysis. These PIXE signals are produced and acquired during the same experiment, allowing the analysis of both features (composition and density) at the same time. The X-rays originated in the secondary target are attenuated when traversing the specimen in the direction of the detector and consequently a radiographic image of the specimen is obtained. In this case, the characteristic X-rays of the secondary target act like a monochromatic secondary source. In the present work, a method to estimate the thickness of specimens is introduced and compared with estimations performed by the STIM method.

Muscio, J. [Escuela de Ciencia y Tecnologia-Universidad Nacional de San Martin (UNSAM) (Argentina); Somacal, H.; Burlon, A. A.; Debray, M. E.; Valda, A. A. [Escuela de Ciencia y Tecnologia-Universidad Nacional de San Martin (UNSAM) (Argentina); Departamento de Fisica, Comision Nacional de Energia Atomica (CNEA) (Argentina); Kreiner, A. J. [Escuela de Ciencia y Tecnologia-Universidad Nacional de San Martin (UNSAM) (Argentina); Departamento de Fisica, Comision Nacional de Energia Atomica (CNEA) (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) (Argentina); Kesque, J. M.; Minsky, D. M. [Departamento de Fisica, Comision Nacional de Energia Atomica (CNEA) (Argentina); Davidson, M.; Davidson, J. [Departamento de Fisica, Comision Nacional de Energia Atomica (CNEA) (Argentina); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET) (Argentina)

2007-10-26T23:59:59.000Z

423

A simplified energy audit technique for generic buildings  

SciTech Connect

A simplified energy audit technique for generic buildings is developed. The premise is that buildings in similar climates and with similar patterns of use and thermal characteristics (structural mass and R-value) should have similar total energy usages if operated in an energy efficient manner. The deviation in the actual total energy usage from that expected for energy-efficient operation can then be examined, in conjunction with the findings of a building walk-through, in order to identify opportunities for energy conservation. The index used for comparison is the Energy Utilization Index (EUI), the total site energy used for per square foot per year. The procedure is illustrated by application to the generic class of Mississippi public school buildings. Validation is achieved by examining the sensitivity of building parameters and energy usage and by observations made in using the simplified procedure. The results show that the simplified technique gives results with as much fidelity as more labor intensive energy-auditing procedures and that the the technique is viable for generic classes of buildings.

Hodge, B.K.; Steele, W.G. Jr.; King, R.

1986-01-01T23:59:59.000Z

424

New experimental techniques with the split Hopkinson pressure bar  

SciTech Connect

The split Hopkinson pressure bar or Kolsky bar has provided for many years a technique for performing compression tests at strain rates approaching 10/sup 4/ s/sup -1/. At these strain rates, the small dimensions possible in a compression test specimen give an advantage over a dynamic tensile test by allowing the stress within the specimen to equilibrate within the shortest possible time. The maximum strain rates possible with this technique are limited by stress wave propagation in the elastic pressure bars as well as in the deforming specimen. This subject is reviewed in this paper, and it is emphasized that a slowly rising excitation is preferred to one that rises steeply. Experimental techniques for pulse shaping and a numerical procedure for correcting the raw data for wave dispersion in the pressure bars are presented. For tests at elevated temperature a bar mover apparatus has been developed which effectively brings the cold pressure bars into contact with the specimen, which is heated with a specially designed furnace, shortly before the pressure wave arrives. This procedure has been used successfully in tests at temperatures as high as 1000/sup 0/C.

Frantz, C.E.; Follansbee, P.S.; Wright, W.J.

1984-01-01T23:59:59.000Z

425

Technique for rapid establishment of American lotus in remediation efforts  

SciTech Connect

A technique for increasing the establishment rate of American lotus (Nelumbo lutea) and simplifying planting was developed as part of a pond remediation project. Lotus propagation techniques typically require scarification of the seed, germination in heated water, and planting in nursery containers. Then mature (~ 1 yr) nursery-grown stock is transferred to planting site or scarified seed are broadcast applied. Mature plants should grow more quickly, but can be sensitive to handling, require more time to plant, and cost more. Scarified seeds are easier to plant and inexpensive, but have a lag time in growth, can fail to germinate, and can be difficult to site precisely. We developed an intermediate technique using small burlap bags that makes planting easier, provides greater germination success, and avoids lag time in growth. Data on survival and growth from experiments using mature stock, scarified seeds, and bag lotus demonstrate that bag lotus grow rapidly in a variety of conditions, have a high survival rate, can be processed and planted easily and quickly, and are very suitable for a variety of remediation projects

Ryon, Michael G [ORNL; Fortner, Allison M [ORNL; Goins, Kenneth N [ORNL; Jett, Robert T [ORNL; McCracken, Kitty [ORNL; Morris, Gail Wright [ORNL; Riazzi, Adam [Lincoln County HS, Hamlin WV; Roy, W Kelly [ORNL

2013-01-01T23:59:59.000Z

426

Far?Infrared Interference Technique for Determining Epitaxial Silicon Thickness  

Science Journals Connector (OSTI)

Interference technique in the frequency range 30200 cm?1 has been used for the first time to determine the thickness of low?conductivity epitaxialfilms deposited on a highly conducting silicon substrate. It is shown that for thick epitaxialfilms (d?4 ?m) the frequency at which half?order minimum occurs is highly sensitive to the epilayer?substrate interface carrier concentration profile. In general the far ir thickness is close to that obtained by angle?stain technique. A combination of ir and far?ir measurements therefore yields valuable information regarding the interface carrier concentration profile. The far?ir technique can replace the costly and destructive methods presently used such as angle stain and capacitance?voltage measurements made on specially fabricated diodes. The paper also discusses the optical constants of silicon in the far ir. The calculations show that it is necessary to use the energy?dependent anisotropicscattering time to correctly evaluate the optical constant in the far ir.

M. A. Saifi; R. H. Stolen

1972-01-01T23:59:59.000Z

427

Evaluation of IR techniques for detection of wall thinning in service water piping  

SciTech Connect

Service water piping systems at electric power plants provide cooling for a variety of safety and non-safety related components and systems. Assessing integrity of the service water piping system includes detection and analysis of pipe wall thinning. Conventional inspection techniques usually involve the time-intensive process of ultrasonic thickness measurements, based on a grid system, of the entire pipe length. An alternative to this process may lie in the use of active infrared thermography techniques for detection of thin wall areas in the pipe. The EPRI NDE Center participated in a preliminary evaluation of this technology at Vermont Yankee Nuclear Power Plant. Based on the promising results of the Vermont Yankee activity, the Center worked with Thermal Wave Imaging, Inc. (TWI) in an effort to optimize the IR thermal injection technique for service water piping applications. The primary goals of this effort were to determine the practical depth resolution capabilities of the thermal injection method in carbon steel, and also to minimize the effects of pipe curvature on detection capabilities. Both of these efforts were subject to the constraint that the system be sufficiently portable for use in an electrical power plant, where space and access to the pipe surface is often limited.

Zayicek, P. [EPRI NDE Center, Charlotte, NC (United States); Shepard, S.M. [Thermal Wave Imaging, Inc., Lathrup Village, MI (United States)

1996-12-31T23:59:59.000Z

428

Techniques for energy conservation in ac motor-driven systems. Final report  

SciTech Connect

Techniques for energy conservation of reducing losses in ac motor-driven systems proposed by the technical community in response to surging cost of energy are evaluated and compared. Report objectives are to provide better understanding of underlying principles and to evaluate technical and economic viability of these techniques for various applications. An important aspect considered is the impact on electric utility system in terms of harmonics, power factor of operation, and Electro-Magnetic Interference (EMI). The techniques evaluated are: NASA Power Factor Controller, a simple device for reducing power losses in lightly loaded ac motors; wanlass motor modification, a scheme of reconnecting motor windings with capacitors in series, with the intention of improving the motor efficiencies under all loading conditions; conventional variable frequency solid-state inverters which can control the speed of ac motors by producing adjustable frequency ac voltage, with a significant potential for energy conservation in pumps and air-handling systems; and other variable frequency drives and schemes including cycloconverters, slip-recovery scheme, Exxon Alternating Current Synthesizer, Venturini conversion technique, permanent magnet synchronous motors, and a device called the Phase-Liner. The impact of rapid growth in semiconductors and magnetic materials technologies is also considered.

Mohan, N.

1981-09-01T23:59:59.000Z

429

High Througput Combinatorial Techniques in Hydrogen Storage Materials R&D Workshop  

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

Summary of the June 2007 high-throughput combinatorial techniques in hyrogen storage materials workshop

430

New imaging technique gets under the skin...deep  

SciTech Connect

Using a combination of simple optical techniques, plain old white light, and image processing, two Lawrence Livermore researchers and a colleague from the City College of New York (CCNY) have developed a technique for imaging tissue structures--tendons, veins, tumors--deep beneath the skin. The ultimate goal of this research is to dramatically improve the ability to perform minimally invasive cancer detection. ''With a technique called spectral polarization difference imaging [SPDI], we use different wavelengths of light to reach different depths. We also use the polarization properties of the light to help us select the light that penetrates into the tissue and is reflected back out of the tissue as opposed to the light that bounces off the tissue surface,'' says Livermore physicist Harry Radousky, acting Director of University Relations. ''We then image the tissue structures at the different depths, based on how these structures absorb, scatter, and depolarize light. This technique, combined with fiber optics, charge-coupled-device cameras, and image enhancement calculations, allows us to image up to 1.5 centimeters inside tissue, far deeper than the millimeter depths managed by other existing optical techniques.'' The basic research to develop this technique was funded by the Department of Energy through one of its centers of excellence in laser medicine--the DOE Center for Laser Imaging and Cancer Diagnostics directed by Robert Alfano, M.D., at CCNY. A branch of this center is hosted at the Laboratory within the Materials Research Institute. wavelengths in the visible spectrum are scattered and absorbed within the tissue. For even longer wavelengths--those in the near-infrared spectral region--scattering and absorption of the photons is even further reduced.'' The light that passes through the filter then passes through a polarizer. The light that finally hits the tissue sample is thus not only of a given wavelength but also of a selected polarization. As photons penetrate the tissue, they interact with various tissue structures that may have optical properties different from those of the host tissue. Finally, some of the injected photons emerge from the tissue in the backscattering direction. The intensity of the backscattered light depends on the optical characteristics of the tissue at the sample's surface as well as below its surface at a particular location. Light that reflects from the surface (known as a spectral reflection) is polarized and can be removed with a second polarizer set to reject this light. This phenomenon is similar to the way sunglasses work to remove the polarized glare from surfaces, such as the water surface in a swimming pool. The light that backscatters from somewhere below the surface of the tissue is depolarized and consequently can pass through this second polarizer. This remaining light passes through a 50-millimeter camera lens, which is coupled to a CCD detector that captures the image in an exposure of a few milliseconds.

Radousky, H; Demos, S

2000-11-01T23:59:59.000Z

431

Fringe biasing: A variance reduction technique for optically thick meshes  

SciTech Connect

Fringe biasing is a stratified sampling scheme applicable to Monte Carlo thermal radiation transport codes. The thermal emission source in optically thick cells is partitioned into separate contributions from the cell interiors (where the likelihood of the particles escaping the cells is virtually zero) and the 'fringe' regions close to the cell boundaries. Thermal emission in the cell interiors can now be modelled with fewer particles, the remaining particles being concentrated in the fringes so that they are more likely to contribute to the energy exchange between cells. Unlike other techniques for improving the efficiency in optically thick regions (such as random walk and discrete diffusion treatments), fringe biasing has the benefit of simplicity, as the associated changes are restricted to the sourcing routines with the particle tracking routines being unaffected. This paper presents an analysis of the potential for variance reduction achieved from employing the fringe biasing technique. The aim of this analysis is to guide the implementation of this technique in Monte Carlo thermal radiation codes, specifically in order to aid the choice of the fringe width and the proportion of particles allocated to the fringe (which are interrelated) in multi-dimensional simulations, and to confirm that the significant levels of variance reduction achieved in simulations can be understood by studying the behaviour for simple test cases. The variance reduction properties are studied for a single cell in a slab geometry purely absorbing medium, investigating the accuracy of the scalar flux and current tallies on one of the interfaces with the surrounding medium. (authors)

Smedley-Stevenson, R. P. [AWE PLC, Aldermaston Reading, Berkshire, RG7 4PR (United Kingdom)

2013-07-01T23:59:59.000Z

432

Investigation of grid embedment techniques as applied to subcritical flow  

E-Print Network (OSTI)

INVESTIGATION OF GRID EMBEDMENT TECHNIOUES AS APPI IED TO SUBCRITICAL FLOW A Thesis by MICHAEL E. WATTS Submitted to the Graduate College of Texas A@1 University in partial fulfi11ment of the requirements for the degree of MASTER OF SCIENCE... December, 1980 Major Subject: Aerospace Engineering INVESTIGATION OF GRID EMBEDMENT TECHNIQUES AS APPLIED TO SUBCRITICAL FLOW A Thesis by MICHAEL E, WATTS Approved as to style and content by: a)rm n o Committee 3 J4W Member p' c. ember Member...

Watts, Michael E.

1980-01-01T23:59:59.000Z

433

Towards Techniques for Easy-to-Read Web Content  

Science Journals Connector (OSTI)

Abstract Requirements for Easy-to-Read Web content can be derived from various sources. The requirements cover linguistic properties as well as aspects of presentation and interaction. This paper compares different approaches to check that the Web content is understandable. A major challenge is that many guidelines are language-dependent. We describe a method to extend the coverage of an existing author support tool across multiple languages and show how this can be a first step towards common Techniques for Easy-to-Read Web content.

Annika Nietzio; Daniel Naber; Christian Bhler

2014-01-01T23:59:59.000Z

434

Conceptual Ideas for New Nondestructive UF6 Cylinder Assay Techniques  

SciTech Connect

Nondestructive assay (NDA) measurements of uranium cylinders play an important role in helping the International Atomic Energy Agency (IAEA) safeguard uranium enrichment plants. Traditionally, these measurements have consisted of a scale or load cell to determine the mass of UF{sub 6} in the cylinder combined with a gamma-ray measurement of the 186 keV peak from {sup 235}U to determine enrichment. More recently, Los Alamos National Laboratory (LANL) and Pacific Northwest National Laboratory (PNNL) have developed systems that exploit the passive neutron signal from UF{sub 6} to determine uranium mass and/or enrichment. These include the Uranium Cylinder Assay System (UCAS), the Passive Neutron Enrichment Meter (PNEM), and the Hybrid Enrichment Verification Array (HEVA). The purpose of this report is to provide the IAEA with new ideas on technologies that may or may not be under active development but could be useful for UF{sub 6} cylinder assay. To begin, we have included two feasibility studies of active interrogation techniques. There is a long history of active interrogation in the field of nuclear safeguards, especially for uranium assay. Both of the active techniques provide a direct measure of {sup 235}U content. The first is an active neutron method based on the existing PNEM design that uses a correlated {sup 252}Cf interrogation source. This technique shows great promise for UF{sub 6} cylinder assay and is based on advanced technology that could be implemented in the field in the near term. The second active technique is nuclear resonance fluorescence (NRF). In the NRF technique, a bremsstrahlung photon beam could be used to illuminate the cylinder, and high-resolution gamma-ray detectors would detect the characteristic de-excitation photons. The results of the feasibility study show that under certain measurement geometries, NRF is impractical for UF6 cylinder assay, but the 'grazing transmission' and 'secant transmission' geometries have more potential for this application and should be assessed quantitatively. The next set of techniques leverage scintillator detectors that are sensitive to both neutron and gamma radiation. The first is the BC-523A capture-gated organic liquid scintillator. The detector response from several different neutron energies has been characterized and is included in the study. The BC-523A has not yet been tested with UF{sub 6} cylinders, but the application appears to be well suited for this technology. The second detector type is a relatively new inorganic scintillator called CLYC. CLYC provides a complementary detection approach to the HEVA and PNEM systems that could be used to determine uranium enrichment in UF{sub 6} cylinders. In this section, the conceptual idea for an integrated CLYC-HEVA/PNEM system is explored that could yield more precision and robustness against systemic uncertainties than any one of the systems by itself. This is followed by a feasibility study on using alpha-particle-induced reaction gamma-rays as a way to estimate {sup 234}U abundance in UF{sub 6}. Until now, there has been no readily available estimate of the strength of these reaction gamma-rays. Thick target yields of the chief reaction gammas are computed and show that they are too weak for practical safeguards applications. In special circumstances where long count times are permissible, the 1,275 keV F({alpha},x{gamma}) is observable. Its strength could help verify an operator declaration provided other knowledge is available (especially the age). The other F({alpha},x{gamma}) lines are concealed by the dominant uranium line spectrum and associated continuum. Finally, the last section provides several ideas for electromagnetic and acoustic nondestructive evaluation (NDE) techniques. These can be used to measure cylinder wall thickness, which is a source of systematic uncertainty for gamma-ray-based NDA techniques; characterize the UF{sub 6} filling profile inside the cylinder, which is a source of systematic uncertainty for neutron-based NDA techniques; locate hidden objects inside the cylinder; a

Miller, Karen A. [Los Alamos National Laboratory

2012-05-02T23:59:59.000Z

435

New modes of particle accelerations techniques and sources. Formal report  

SciTech Connect

This Report includes copies of transparencies and notes from the presentations made at the Symposium on New Modes of Particle Accelerations - Techniques and Sources, August 19-23, 1996 at the Institute for Theoretical Physics, University of California, Santa Barbara California, that was made available by the authors. Editing, reduction and changes to the authors contributions were made only to fulfill the printing and publication requirements. We would like to take this opportunity and thank the speakers for their informative presentations and for providing copies of their transparencies and notes for inclusion in this Report.

Parsa, Z. [ed.

1996-12-31T23:59:59.000Z

436

Engine control techniques to account for fuel effects  

DOE Patents (OSTI)

A technique for engine control to account for fuel effects including providing an internal combustion engine and a controller to regulate operation thereof, the engine being operable to combust a fuel to produce an exhaust gas; establishing a plurality of fuel property inputs; establishing a plurality of engine performance inputs; generating engine control information as a function of the fuel property inputs and the engine performance inputs; and accessing the engine control information with the controller to regulate at least one engine operating parameter.

Kumar, Shankar; Frazier, Timothy R.; Stanton, Donald W.; Xu, Yi; Bunting, Bruce G.; Wolf, Leslie R.

2014-08-26T23:59:59.000Z

437

High- and low-temperature bonding techniques for microstructures  

SciTech Connect

The ability to bond together two or more silicon wafers greatly expands the variety and complexity of silicon microstructures that can be designed and fabricated. At LLNL, microstructures have been used for many years as hardware in scientific experiments. The activity has recently been expanded into other areas to include microinstruments for biomedical applications and for chemical analysis. Both high temperature (1100{degrees}C) bonding techniques have been used, depending on the application. This paper discusses these applications with emphasis on the most extensive which is the fabrication of microchannel coolers for diode arrays.

Ciarlo, D.R.

1993-06-22T23:59:59.000Z

438

Numerical techniques for coupled neutronic/thermal-hydraulic reactor calculations  

SciTech Connect

The solution of coupled neutronic/thermal-hydraulic nuclear reactor calculations is achieved through an iterative procedure that treats the components of the calculations in a relatively decoupled fashion. This entails an alternation between the neutronic and thermal-hydraulic components of the calculation while using the most recent estimates of the neutron cross sections, as determined by the thermal-hydraulic feedback relationships. Although this decoupled approach is typically convergent, it has been demonstrated that the rate of convergence is quite inconsistent. As a result of these limitations, an effort has been directed toward the development of numerical techniques that more closely approximate a truly coupled solution.

Betts, C.M.; Kulas, M.M.; Klein, A.C. [Oregon State Univ., Corvallis, OR (United States)] [and others

1995-12-31T23:59:59.000Z

439

A Survey of Single-Molecule Techniques in Chemical Biology  

Science Journals Connector (OSTI)

A Survey of Single-Molecule Techniques in Chemical Biology ... ; Fluorescence resonance energy transfer (FRET): When a fluorescent dye (donor) is excited by a light source, energy can be transferred nonradiatively to another dye (acceptor), which is within ?28 nm. ... Colors correspond to different regions of the template construct with the rpoB gene in green, the restriction sites in light blue, the regulatory pause region in pink, and the ops and his pause sites in dark gray and light gray, respectively. ...

Peter V. Cornish; Taekjip Ha

2007-01-19T23:59:59.000Z

440

Mathematical Model and Artificial Intelligent Techniques Applied to a Milk Industry through DSM  

Science Journals Connector (OSTI)

The resources for electrical energy are depleting and hence the gap between the supply and the demand is continuously increasing. Under such circumstances the option left is optimal utilization of available energy resources. The main objective of this chapter is to discuss about the Peak load management and overcome the problems associated with it in processing industries such as Milk industry with the help of DSM techniques. The chapter presents a generalized mathematical model for minimizing the total operating cost of the industry subject to the constraints. The work presented in this chapter also deals with the results of application of Neural Network Fuzzy Logic and Demand Side Management (DSM) techniques applied to a medium scale milk industrial consumer in India to achieve the improvement in load factor reduction in Maximum Demand (MD) and also the consumer gets saving in the energy bill.

P. Ravi Babu; V. P. Sree Divya

2011-01-01T23:59:59.000Z

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441

Minimally Invasive Techniques for the Treatment of Benign Salivary Gland Obstruction: A Review  

SciTech Connect

This paper reviews the literature published on minimally invasive techniques developed to treat benign salivary gland obstruction. Techniques reported include extracorporeal and intracorporeal salivary gland lithotripsy, endoscopy and radiologically guided techniques for the extraction of calculi and dilatation of duct strictures. These techniques are described, their advantages and disadvantages discussed and their success rates compared. Recommendations are made on the most appropriate application of each technique.

Brown, Jackie E. [Department of Dental Radiology, Guy's Dental Hospital, Guy's and St. Thomas' Hospital Trust, London SE1 9RT (United Kingdom)

2002-10-15T23:59:59.000Z

442

Technique of Calibration of a Working Standard of the Energy Unit of Narrow-Pulse Laser Radiation and Results of Trial Use of the Standard  

Science Journals Connector (OSTI)

Questions related to the design and testing of a technique of calibrating a working energy unit of narrow-pulse laser radiation by means of an electrical working system and determining the degree of equivalenc...

I. V. Mnev; M. V. Ulanovskii

2002-06-01T23:59:59.000Z

443

Two-loop pinch technique in the electroweak sector  

Science Journals Connector (OSTI)

The generalization of the two-loop pinch technique to the electroweak sector of the standard model is presented. We restrict ourselves to the case of conserved external currents, and provide a detailed analysis of both the charged and neutral sectors. The crucial ingredient for this construction is the identification of the parts discarded during the pinching procedure with well-defined contributions to the Slavnov-Taylor identity satisfied by the off-shell one-loop gauge-boson vertices; the latter are nested inside the conventional two-loop self-energies. It is shown by resorting to a set of powerful identities that the two-loop effective pinch technique self-energies coincide with the corresponding ones computed in the background Feynman gauge. The aforementioned identities are derived in the context of the Batalin-Vilkovisky formalism, a fact which enables the individual treatment of the self-energies of the photon and the Z boson. Some possible phenomenological applications are briefly discussed.

Daniele Binosi and Joannis Papavassiliou

2002-10-29T23:59:59.000Z

444

Comparison of two techniques for the simulation of PV systems  

SciTech Connect

For several years, MIT Lincoln Laboratory has conducted computer simulations of the performance of photovoltaic solar energy systems in order to size system components, to define designs of potential economic feasibility, to test various control schemes, and to monitor the performance of working systems in the field. When used as an aid-to-design, these hourly simulations step through a full year's worth of insolation and weather data at a specific geographical site. These data are available on computer tapes in the SOLMET format from the National Climatic Center. More recently, a simulation technique has been developed that does not require marching through time but instead works with probability-density functions of daily values of insolation and load as inputs while still providing estimates of the usual measures of system performance (e.g., auxiliary energy required, surplus energy thrown away, fraction of load displaced). Results obtained compare well with results previously obtained from an hourly simulation of a daytime radio station. This technique may be used to study the effect on system performance of varying degrees of correlation of load with insolation and to test the sensitivity of economic analyses to variations in utility escalation rate (discounted for inflation), PV module and balance-of-system costs.

Bucciarelli, L.L.; Grossman, B.L.

1980-01-01T23:59:59.000Z

445

Thermal NDE techniques-from photoacoustics to thermosonics  

Science Journals Connector (OSTI)

The evolution of thermal wave imaging and materials characterization is traced from its origins during the time of the First International Workshop on Photoacoustics and Photothermal Phenomena in Ames Iowa in 1979 to the present and with an eye to the future. In the early days the heat sources consisted of amplitude-modulated lasers focused to a spot and step-scanned across the surface of the object under evaluation. A variety of lock-in detection schemes were used including microphones in gas cells (photoacoustics) laser optical probes (the mirage effect) photothermal defection thermoreflectance and infrared (IR) detection. With the commercial availability of IR cameras rapid and wide-area synchronous imaging became possible both in the frequency domain (lock-in imaging) and the time-domain (box-car imaging). Recently the photoacoustic technique has been flipped with a pulse of sound being used as the energy source and with an IR camera monitoring the subsequent photons emitted in the vicinity of a surface or subsurface defect. This new technique (thermosonics) is described along with selected applications to crack detection in a variety of materials and objects.

Robert L. Thomas

2002-01-01T23:59:59.000Z

446

Architectural Techniques For Managing Non-volatile Caches  

SciTech Connect

As chip power dissipation becomes a critical challenge in scaling processor performance, computer architects are forced to fundamentally rethink the design of modern processors and hence, the chip-design industry is now at a major inflection point in its hardware roadmap. The high leakage power and low density of SRAM poses serious obstacles in its use for designing large on-chip caches and for this reason, researchers are exploring non-volatile memory (NVM) devices, such as spin torque transfer RAM, phase change RAM and resistive RAM. However, since NVMs are not strictly superior to SRAM, effective architectural techniques are required for making them a universal memory solution. This book discusses techniques for designing processor caches using NVM devices. It presents algorithms and architectures for improving their energy efficiency, performance and lifetime. It also provides both qualitative and quantitative evaluation to help the reader gain insights and motivate them to explore further. This book will be highly useful for beginners as well as veterans in computer architecture, chip designers, product managers and technical marketing professionals.

Mittal, Sparsh [ORNL] ORNL

2013-01-01T23:59:59.000Z

447

Enhancement of absolute neutron dosimetry by activation technique  

Science Journals Connector (OSTI)

In this work, an activation technique was used for absolute neutron dosimetry. Induced gamma within two activation foils (115In and 197Au) was detected by (5 5) sodium iodide (NaI) crystal. Thermal neutron irradiation was performed using the thermal neutron irradiation facility at the National Institute for Standards (NIS). Two gamma lines of 416.9 keV and 411.8 keV from 115In and 198Au, respectively, were chosen for the estimation of the neutron fluence. Gamma lines of 416.8 keV and 1293.56 keV from 115In were used to assure the obtained values of neutron fluence. Absolute neutron dose was calculated utilising the measured neutron fluence. Estimated neutron dose was found to be 1.50 mSv/h. The calculated dose by activation technique was verified by neutron rem meter NM2. Enhancement of neutron fluence was performed by adding Perspex sheets behind the activation foils to produce multiple scattering on the foils, and hence resulting in increasing the capability of accurate estimation of low neutron fluence.

A.R. El-Sersy; N.E. Khaled; S.A. Eman

2012-01-01T23:59:59.000Z

448

A Comparison of Techniques for Detecting Abnormal Change in Blogs  

SciTech Connect

Distributed collections are made of metadata entries that contain references to artifacts not controlled by the collection curators. These collections often have limited forms of change; for digital distributed collections, primarily creation and deletion of additional resources. However, there exists a class of digital collection that undergoes additional kinds of change. These collections consist of resources that are distributed across the Internet and brought together via hyperlinking. Resources in these collections can be expected to change as time goes on. Part of the difficulty in maintaining these collections is determining if a changed page is still a valid member of the collection. Others have tried to address this by defining a maximum allowed threshold of change, however, these methods treat change as a potential problem and treat web content as static despite its intrinsic dynamicism. Instead we acknowledge change on the web as a normal part of a web document and determine the difference between what a maintainer expects a page to do and what it actually does. In this work we evaluate options for extractors and analyzers from a suite of techniques against a human-generated ground-truth set of blog changes. The results of this work show a statistically significant improvement over traditional threshold techniques for our collection.

Furuta, Dr. Richard Keith [Texas A& M University] [Texas A& M University; ShipmanIII, Dr. Frank Major [Texas A& M University] [Texas A& M University; Bogen, Paul Logasa [ORNL] [ORNL

2012-01-01T23:59:59.000Z

449

Research in nondestructive evaluation techniques for nuclear reactor concrete structures  

SciTech Connect

The purpose of the Materials Aging and Degradation (MAaD) Pathway of the Department of Energy's Light Water Reactor Sustainability (LWRS) Program is to develop the scientific basis for understanding and predicting longterm environmental degradation behavior of material in nuclear power plants and to provide data and methods to assess the performance of systems, structures, and components (SSCs) essential to safe and sustained nuclear power plant operations. The understanding of aging-related phenomena and their impacts on SSCs is expected to be a significant issue for any nuclear power plant planning for long-term operations (i.e. service beyond the initial license renewal period). Management of those phenomena and their impacts during long-term operations can be better enable by improved methods and techniques for detection, monitoring, and prediction of SSC degradation. The MAaD Pathway R and D Roadmap for Concrete, 'Light Water Reactor Sustainability Nondestructive Evaluation for Concrete Research and Development Roadmap', focused initial research efforts on understanding the recent concrete issues at nuclear power plants and identifying the availability of concrete samples for NDE techniques evaluation and testing. [1] An overview of the research performed by ORNL in these two areas is presented here.

Clayton, Dwight; Smith, Cyrus [Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831 (United States)

2014-02-18T23:59:59.000Z

450

INTERIM REPORT ON CONCRETE DEGRADATION MECHANISMS AND ONLINE MONITORING TECHNIQUES  

SciTech Connect

The existing fleets of nuclear power plants in the United States have initial operating licenses of 40 years, though most these plants have applied for and received license extensions. As plant structures, systems, and components age, their useful lifeconsidering both structural integrity and performanceis reduced as a result of deterioration of the materials. The online monitoring of concrete structure conducted under the Advanced Instrumentation, Information, and Control Technologies Pathway of the Light Water Reactor Sustainability program at Idaho National Laboratory will develop and demonstrate concrete structures health monitoring capabilities. Assessment and management of aging concrete structures in nuclear plants require a more systematic approach than simple reliance on existing code margins of safety. Therefore, the structural health monitoring is required to produce actionable information regarding structural integrity that supports operational and maintenance decisions. Through this research project, several national laboratories and Vanderbilt University proposes to develop a framework of research activities for the health monitoring of nuclear power plant concrete structures that includes integration of four elementsdamage modeling, monitoring, data analytics, and uncertainty quantification. This report briefly discusses available techniques and ongoing challenges in each of the four elements of the proposed framework with emphasis on degradation mechanisms and online monitoring techniques.

Sankaran Mahadevan; Vivek Agarwal; Kyle Neal; David Kosson; Douglas Adams

2014-09-01T23:59:59.000Z

451

Single molecule techniques in DNA repair: A primer  

Science Journals Connector (OSTI)

Abstract A powerful new approach has become much more widespread and offers insights into aspects of DNA repair unattainable with billions of molecules. Single molecule techniques can be used to image, manipulate or characterize the action of a single repair protein on a single strand of DNA. This allows search mechanisms to be probed, and the effects of force to be understood. These physical aspects can dominate a biochemical reaction, where at the ensemble level their nuances are obscured. In this paper we discuss some of the many technical advances that permit study at the single molecule level. We focus on DNA repair to which these techniques are actively being applied. DNA repair is also a process that encompasses so much of what single molecule studies benefit searching for targets, complex formation, sequential biochemical reactions and substrate hand-off to name just a few. We discuss how single molecule biophysics is poised to transform our understanding of biological systems, in particular DNA repair.

Craig D. Hughes; Michelle Simons; Cassidy E. Mackenzie; Bennett Van Houten; Neil M. Kad

2014-01-01T23:59:59.000Z

452

VELOCITY ANISOTROPY AND SHAPE BIAS IN THE CAUSTIC TECHNIQUE  

SciTech Connect

We use the Millennium Simulation to quantify the statistical accuracy and precision of the escape-velocity technique for measuring cluster-sized halo masses at z {approx} 0.1. We show that in three dimensions one can measure nearly unbiased (<4%) halo masses (>1.5 Multiplication-Sign 10{sup 14} M{sub Sun} h {sup -1}) with 10%-15% scatter. Line-of-sight projection effects increase the scatter to {approx}25%, where we include the known velocity anisotropies. The classical ''caustic'' technique incorporates a calibration factor that is determined from N-body simulations. We derive and test a new implementation that eliminates the need for calibration and utilizes only the observables: the galaxy velocities with respect to the cluster mean v, the projected positions r{sub p} , an estimate of the Navarro-Frenk-White (NFW) density concentration, and an estimate of the velocity anisotropies {beta}. We find that differences between the potential and density NFW concentrations induce a 10% bias in the caustic masses. We also find that large (100%) systematic errors in the observed ensemble average velocity anisotropies and concentrations translate to small (5%-10%) biases in the inferred masses.

Gifford, Daniel; Miller, Christopher J. [Department of Astronomy, University of Michigan, 500 Church St., Ann Arbor, MI 48109 (United States)

2013-05-10T23:59:59.000Z

453

Improved analysis techniques for cylindrical and spherical double probes  

SciTech Connect

A versatile double Langmuir probe technique has been developed by incorporating analytical fits to Laframboise's numerical results for ion current collection by biased electrodes of various sizes relative to the local electron Debye length. Application of these fits to the double probe circuit has produced a set of coupled equations that express the potential of each electrode relative to the plasma potential as well as the resulting probe current as a function of applied probe voltage. These equations can be readily solved via standard numerical techniques in order to determine electron temperature and plasma density from probe current and voltage measurements. Because this method self-consistently accounts for the effects of sheath expansion, it can be readily applied to plasmas with a wide range of densities and low ion temperature (T{sub i}/T{sub e} Much-Less-Than 1) without requiring probe dimensions to be asymptotically large or small with respect to the electron Debye length. The presented approach has been successfully applied to experimental measurements obtained in the plume of a low-power Hall thruster, which produced a quasineutral, flowing xenon plasma during operation at 200 W on xenon. The measured plasma densities and electron temperatures were in the range of 1 Multiplication-Sign 10{sup 12}-1 Multiplication-Sign 10{sup 17} m{sup -3} and 0.5-5.0 eV, respectively. The estimated measurement uncertainty is +6%/-34% in density and +/-30% in electron temperature.

Beal, Brian; Brown, Daniel; Bromaghim, Daron [Air Force Research Laboratory, 1 Ara Rd., Edwards Air Force Base, California 93524 (United States); Johnson, Lee [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, California 91109 (United States); Blakely, Joseph [ERC Inc., 1 Ara Rd., Edwards Air Force Base, California 93524 (United States)

2012-07-15T23:59:59.000Z

454

Risk Management Techniques and Practice Workshop Workshop Report  

SciTech Connect

At the request of the Department of Energy (DOE) Office of Science (SC), Lawrence Livermore National Laboratory (LLNL) hosted a two-day Risk Management Techniques and Practice (RMTAP) workshop held September 18-19 at the Hotel Nikko in San Francisco. The purpose of the workshop, which was sponsored by the SC/Advanced Scientific Computing Research (ASCR) program and the National Nuclear Security Administration (NNSA)/Advanced Simulation and Computing (ASC) program, was to assess current and emerging techniques, practices, and lessons learned for effectively identifying, understanding, managing, and mitigating the risks associated with acquiring leading-edge computing systems at high-performance computing centers (HPCCs). Representatives from fifteen high-performance computing (HPC) organizations, four HPC vendor partners, and three government agencies attended the workshop. The overall workshop findings were: (1) Standard risk management techniques and tools are in the aggregate applicable to projects at HPCCs and are commonly employed by the HPC community; (2) HPC projects have characteristics that necessitate a tailoring of the standard risk management practices; (3) All HPCC acquisition projects can benefit by employing risk management, but the specific choice of risk management processes and tools is less important to the success of the project; (4) The special relationship between the HPCCs and HPC vendors must be reflected in the risk management strategy; (5) Best practices findings include developing a prioritized risk register with special attention to the top risks, establishing a practice of regular meetings and status updates with the platform partner, supporting regular and open reviews that engage the interests and expertise of a wide range of staff and stakeholders, and documenting and sharing the acquisition/build/deployment experience; and (6) Top risk categories include system scaling issues, request for proposal/contract and acceptance testing, and vendor technical or business problems. HPC, by its very nature, is an exercise in multi-level risk management. Every aspect of stewarding HPCCs into the petascale era, from identification of the program drivers to the details of procurement actions and simulation environment component deployments, represents unprecedented challenges and requires effective risk management. The fundamental purpose of this workshop was to go beyond risk management processes as such and learn how to weave effective risk management practices, techniques, and methods into all aspects of migrating HPCCs into the next generation of leadership computing systems. This workshop was a follow-on to the Petascale System Integration Workshop hosted by Lawrence Berkeley National Laboratory (LBNL)/NERSC last year. It was intended to leverage and extend the risk management experience of the participants by looking for common best practices and unique processes that have been especially successful. This workshop assessed the effectiveness of tools and techniques that are or could be helpful in HPCC risk management, with a special emphasis on how practice meets process. As the saying goes: 'In theory, there is no difference between theory and practice. In practice there is'. Finally, the workshop brought together a network of experts who shared information as technology moves into the petascale era and beyond.

Quinn, T; Zosel, M

2008-12-02T23:59:59.000Z

455

CEM 2010, April 7-9 2010, Limoges France 1 Abstract--Power Line Communication (PLC) is a technique  

E-Print Network (OSTI)

CEM 2010, April 7-9 2010, Limoges France 1 Abstract-- Power Line Communication (PLC) is a technique used to deliver information over the electrical networks. The capacity and performance of PLC has PLC systems and radio broadcasters. Due to their dispersive nature, the PLC channels offer a rich

Brest, Université de

456

Role of the gas flow parameters on the uniformity of films produced by PECVD technique  

SciTech Connect

The aim of this work is to present an analytical model able to interpret the experimental data of the dependence of film's uniformity on the discharge pressure, gas flow and temperature used during the production of thin films by the plasma enhancement chemical vapor deposition technique, under optimized electrode's geometry and electric field distribution. To do so, the gas flow is considered to be quasi-incompressible and inviscous leading to the establishment of the electro-fluid-mechanics equations able to interpret the film's uniformity over the substrate area, when the discharge process takes place in the low power regime.

Martins, R.; Macarico, A.; Ferreira, I.; Fortunato, E.

1997-07-01T23:59:59.000Z

457

High Rate Laser Pitting Technique for Solar Cell Texturing  

SciTech Connect

High rate laser pitting technique for solar cell texturing Efficiency of crystalline silicon solar cells can be improved by creating a texture on the surface to increase optical absorption. Different techniques have been developed for texturing, with the current state-of-the-art (SOA) being wet chemical etching. The process has poor optical performance, produces surfaces that are difficult to passivate or contact and is relatively expensive due to the use of hazardous chemicals. This project shall develop an alternative process for texturing mc-Si using laser micromachining. It will have the following features compared to the current SOA texturing process: -Superior optical surfaces for reduced front-surface reflection and enhanced optical absorption in thin mc-Si substrates -Improved surface passivation -More easily integrated into advanced back-contact cell concepts -Reduced use of hazardous chemicals and waste treatment -Similar or lower cost The process is based on laser pitting. The objective is to develop and demonstrate a high rate laser pitting process which will exceed the rate of former laser texturing processes by a factor of ten. The laser and scanning technologies will be demonstrated on a laboratory scale, but will use inherently technologies that can easily be scaled to production rates. The drastic increase in process velocity is required for the process to be implemented as an in-line process in PV manufacturing. The project includes laser process development, development of advanced optical systems for beam manipulation and cell reflectivity and efficiency testing. An improvement of over 0.5% absolute in efficiency is anticipated after laser-based texturing. The surface textures will be characterized optically, and solar cells will be fabricated with the new laser texturing to ensure that the new process is compatible with high-efficiency cell processing. The result will be demonstration of a prototype process that is suitable for scale-up to a production tool and process. The developed technique will have an reducing impact on product pricing. As efficiency has a substantial impact on the economics of solar cell production due to the high material cost content; in essence, improved efficiency through cost-effective texturing reduces the material cost component since the product is priced in terms of $/W. The project is a collaboration between Fraunhofer USA, Inc. and a c-Si PV manufacturer.

Hans J. Herfurth; Henrikki Pantsar

2013-01-10T23:59:59.000Z

458

NETL: News Release - Innovative Mercury Removal Technique Shows Early  

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

August 5, 2003 August 5, 2003 Innovative Mercury Removal Technique Shows Early Promise Photochemical Process Developed in Federal Lab Removes Mercury from Flue Gas - NETL scientist Evan Granite prepares a lab test of the UV mercury removal process. - NETL scientist Evan Granite prepares for a lab test of the UV mercury removal process. MORGANTOWN, WV - A promising technology to remove mercury from coal-fired power plants -- dubbed the "GP-254 Process" -- has been developed and is currently being tested at the Department of Energy's National Energy Technology Laboratory (NETL). Newly patented, the GP-254 Process enhances mercury removal using ultraviolet light to induce various components of power plant stack gas to react with the mercury, and changes the

459

X-RAY FLUORESCENCE MICROPROBE (XFM) TECHNIQUES AND CAPABILITIES  

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

RAY FLUORESCENCE MICROPROBE (XFM) RAY FLUORESCENCE MICROPROBE (XFM) TECHNIQUES AND CAPABILITIES APPLICATIONS WORLD-LEADING MICROFOCUSED EXAFS SPECTROSCOPY * XFM is an optimized three-pole wiggler beamline for the characterization of materials in an "as-is" state that are chemically heterogeneous at the micrometer scale via synchrotron induced X-ray fluorescence. * XFM includes instrumentation for microbeam X-ray fluorescence (µXRF), diffraction (µXRD) and fluorescence computed microtomography (FCMT) . However, it is optimized to provide users state-of-the-art microfocused Extended X-ray Absorption Fine Structure (µEXAFS) spectroscopy between 4 to 20 keV. * XFM will trade-off beam size and flux for sample configuration flexibility. This includes more readily achievable stability

460

DEMONSTRATION OF ADVANCED COMBUSTION NO X CONTROL TECHNIQUES  

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

ADVANCED COMBUSTION NO ADVANCED COMBUSTION NO X CONTROL TECHNIQUES FOR A WALL-FIRED BOILER PROJECT PERFORMANCE SUMMARY CLEAN COAL TECHNOLOGY DEMONSTRATION PROGRAM JANUARY 2001 SOUTHERN COMPANY SERVICES, INC. DOE/FE-0429 Disclaimer This report was prepared using publicly available information, including the Final Technical Report and other reports prepared pursuant to a cooperative agreement partially funded by the U.S. Department of Energy. Neither the United States Government nor any agency, employee, contractor, or representative thereof, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe upon privately

Note: This page contains sample records for the topic "techniques electrical techniques" 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

Vector Network Analyzer Techniques to measure WR340 Waveguide Windows  

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

6 6 Vector Network Analyzer Techniques to Measure WR340 Waveguide Windows T. L. Smith ASD / RF Group Advanced Photon Source Argonne National Laboratory June 26, 2002 Table of Contents 1) Introduction 2) Objective 3) Full Two-Port Calibration 4) TRL (Thru-Reflect-Line) 5) TRL / WR340 Waveguide Window Measurement 6) Conclusions 7) References 1. Introduction In its fundamental form, network analysis involves the measurement of incident, reflected, and transmitted waves that travel along transmission lines. Measuring both magnitude and phase of components is important for several reasons. First, both measurements are required to fully characterize a linear network and ensure distortion- free transmission. To design effective matching networks, complex impedances must be

462

Techniques for active embodiment of participants in virtual environments  

SciTech Connect

This paper presents preliminary work in the development of an avatar driver. An avatar is the graphical embodiment of a user in a virtual world. In applications such as small team, close quarters training and mission planning and rehearsal, it is important that the user`s avatar reproduce his or her motions naturally and with high fidelity. This paper presents a set of special purpose algorithms for driving the motion of the avatar with minimal information about the posture and position of the user. These algorithms utilize information about natural human motion and posture to produce solutions quickly and accurately without the need for complex general-purpose kinematics algorithms. Several examples illustrating the successful applications of these techniques are included.

Hightower, R.; Stansfield, S.

1996-03-01T23:59:59.000Z

463

Preliminary study: isotopic safeguards techniques (IST) LMFBR fuel cycles  

SciTech Connect

This memorandum presents the preliminary results of the effort to investigate the applicability of isotope correlation techniques (ICT), formulated for the LWR system, to the LMFBR fuel cycle. The detailed isotopic compositional changes with burnup developed for the CRBR was utilized as the reference case. This differs from the usual LMFBR design studies in that the core uranium is natural uranium rather than depleted. Nevertheless, the general isotopic behavior should not differ significantly and does allow an initial insight into the expected behavior of isotopic correlations for the LMFBR power systems such as: the U.K. PFR and reprocessing plant; the French Phenix and Superphenix; and the US reference conceptual design studies (CDS) of homogeneous and heterogeneous LMFBR systems as they are developed.

Persiani, P.J.; Kroc, T.K.

1980-06-01T23:59:59.000Z

464

A Survey on Dynamic Spectrum Access Techniques for Cognitive Radio  

E-Print Network (OSTI)

Cognitive radio (CR) is a new paradigm that utilizes the available spectrum band. The key characteristic of CR system is to sense the electromagnetic environment to adapt their operation and dynamically vary its radio operating parameters. The technique of dynamically accessing the unused spectrum band is known as Dynamic Spectrum Access (DSA). The dynamic spectrum access technology helps to minimize unused spectrum bands. In this paper, main functions of Cognitive Radio (CR) i.e. spectrum sensing, spectrum management, spectrum mobility and spectrum sharing are discussed. Then DSA models are discussed along with different methods of DSA such as Command and Control, Exclusive-Use, Shared Use of Primary Licensed User and Commons method. Game-theoretic approach using Bertrand game model, Markovian Queuing Model for spectrum allocation in centralized architecture and Fuzzy logic based method are also discussed and result are shown.

Garhwal, Anita

2012-01-01T23:59:59.000Z

465

Phenomena Identification and Ranking Technique (PIRT) Panel Meeting Summary Report  

SciTech Connect

Phenomena Identification and Ranking Technique (PIRT) is a systematic way of gathering information from experts on a specific subject and ranking the importance of the information. NRC, in collaboration with DOE and the working group, conducted the PIRT exercises to identify safety-relevant phenomena for NGNP, and to assess and rank the importance and knowledge base for each phenomenon. The overall objective was to provide NRC with an expert assessment of the safety-relevant NGNP phenomena, and an overall assessment of R and D needs for NGNP licensing. The PIRT process was applied to five major topical areas relevant to NGNP safety and licensing: (1) thermofluids and accident analysis (including neutronics), (2) fission product transport, (3) high temperature materials, (4) graphite, and (5) process heat for hydrogen cogeneration.

Mark Holbrook

2007-07-01T23:59:59.000Z

466

Sensitivity analysis techniques for models of human behavior.  

SciTech Connect

Human and social modeling has emerged as an important research area at Sandia National Laboratories due to its potential to improve national defense-related decision-making in the presence of uncertainty. To learn about which sensitivity analysis techniques are most suitable for models of human behavior, different promising methods were applied to an example model, tested, and compared. The example model simulates cognitive, behavioral, and social processes and interactions, and involves substantial nonlinearity, uncertainty, and variability. Results showed that some sensitivity analysis methods create similar results, and can thus be considered redundant. However, other methods, such as global methods that consider interactions between inputs, can generate insight not gained from traditional methods.

Bier, Asmeret Brooke

2010-09-01T23:59:59.000Z

467

Morphing the CMB: a technique for interpolating power spectra  

E-Print Network (OSTI)

The confrontation of the Cosmic Microwave Background (CMB) theoretical angular power spectrum with available data often requires the calculation of large numbers of power spectra. The standard practice is to use a fast code to compute the CMB power spectra over some large parameter space, in order to estimate likelihoods and constrain these parameters. But as the dimensionality of the space under study increases, then even with relatively fast anisotropy codes, the computation can become prohibitive. This paper describes the employment of a "morphing" strategy to interpolate new power spectra based on previously calculated ones. We simply present the basic idea here, and illustrate with a few examples; optimization of interpolation schemes will depend on the specific application. In addition to facilitating the exploration of large parameter spaces, this morphing technique may be helpful for Fisher matrix calculations involving derivatives.

Kris Sigurdson; Douglas Scott

2000-03-16T23:59:59.000Z

468

Thermoeconomic analysis of a CHP system by iterative numerical techniques  

SciTech Connect

This paper deals with the determination of the thermoeconomic optimum conditions for a constant space heat load imposed on the air coil of a combined heating and power (CHP) system using iterative numerical techniques. From the thermodynamic relations and equations derived from the energy balance and heat exchanger characteristics, an objective function and constraining equations are obtained. A computer program is developed based on the Redlich-Kwong equation of state to estimate the thermodynamic properties of the refrigerant fluid R-22. Additional computer subroutines are developed to perform thermodynamic and thermoeconomic optimization. Optimum values of the operating variables are identified at thermodynamic and thermoeconomic optimum conditions. Results show that the total irreversibilities produced in the system and the cost of fuel consumption are minimum at thermodynamic optimum conditions, but the annual cost of owning and operating the system is minimum at the thermoeconomic optimum condition, which is 34% lower than at the thermodynamic optimum condition.

Damshala, P.R.

2000-07-01T23:59:59.000Z

469

Neutron scattering techniques as a tool for nondestructive testing  

Science Journals Connector (OSTI)

Neutron scattering techniques such as neutron diffraction, Small-Angle Neutron Scattering (SANS) and Neutron Reflectivity (NREF) are very powerful tools for the nondestructive study of materials. The corresponding experimental facilities at a Greek research reactor and demonstrative experiments of their employment in the nondestructive testing of materials are presented. Neutron diffraction was applied in the study of irradiation effects on SiCf /SiC composites in view of their application to future fusion reactors. SiC materials are important in the aerospace industry and their oxidation at high temperatures was investigated by NREF. Finally, a SANS study of the precipitation of the aerospace Al-8.9at%Li alloy is presented.

G. Apostolopoulos; K. Mergia; A.G. Youtsos

2009-01-01T23:59:59.000Z

470

Passive remote smoke plume opacity sensing: a technique  

SciTech Connect

A new passive technique for the remote measurement of the visual opacity of plumes emerging from smokestacks is presented. It is based on the detection of the attenuation of the polarized component of Rayleigh-scattered background skylight as it traverses a smoke plume. A two-color difference measurement of the polarization of skylight through the plume is compared with a similar measurement of the unattenuated sky-light adjacent to the plume. This method is independent of the intrinsic brightness of the plume resulting from the scattering of sunlight and cancels white-light polarization effects of plume-scattered radiation. A prototype instrument incorporating this method has been successfully field tested on an EPA smoke school generator and a power plant stack plume.

Lilenfeld, P.; Woker, G.; Stern, R.; McVay, L.

1981-03-01T23:59:59.000Z

471

TECHNIQUES FOR THE STUDY OF THE STRUCTURAL PROPERTIES.  

SciTech Connect

The evolution of our understanding of the behavior of oxide nanostructures depends heavily on the structural information obtained from a wide range of physical methods traditionally used in solid state physics, surface science and inorganic chemistry. In this chapter, we describe several techniques that are useful for the characterization of the structural properties of oxide nanostructures: X-ray diffraction (XRD) and scattering, X-ray absorption fine structure (XAFS), Raman spectroscopy, transmission electron microscopy (TEM), scanning tunneling microscopy (STM) and atomic force microscopy (AFM). The ultimate goal is to obtain information about the spatial arrangement of atoms in the nanostructures with precise interatomic distances and bond angles. This may not be possible for complex systems and one may get only partial information about the local geometry or morphology.

FERNANDEZ-GARCIA, M.; RODRIGUEZ, J.A.; MARTINEZ-ARIAS, A.; HANSON, J.C.

2006-06-30T23:59:59.000Z

472

Using active database techniques for an advanced alarm processing  

SciTech Connect

An Advanced Alarm System (AAS) is primarily a digital system employing advanced alarm process logics and a VDU (Visual Display Unit) based control and display for the alarms. Active Database Systems (ADSs) are able to monitor a special situation represented by an event and one or more conditions. When the event occurs and the conditions are evaluated as true, the corresponding actions are executed. Hence, ADSs can recognize specific situations and react to them without direct explicit user or application requests. ADSs are very useful for timely applications such as the advanced, alarm processing. This paper proposes a new approach to the advanced alarm processing by using Event-Condition- Action(ECA) rules that can be automatically triggered by an active database. And this paper describes the design considerations and solution plan for advanced alarm processing by using active database techniques. (authors)

Jang, G. S. [I and C HFE Dept., Korea Atomic Energy Research Inst., 150, Duckjin-dong, Yusung-ku, Daejeon 305-353 (Korea, Republic of); Seong, D. H. [Samchang Enterprise Co., LTD, 974-1, Goyean-ri, Ulju-gun, Ulsan, 689-871 (Korea, Republic of); Keum, J. Y.; Park, H. Y. [I and C HFE Dept., Korea Atomic Energy Research Inst., 150, Duckjin-dong, Yusung-ku, Daejeon 305-353 (Korea, Republic of); Kim, Y. K. [Dept. of Computer Science, Chungnam National Univ., Daejeon, 305-764 (Korea, Republic of)

2006-07-01T23:59:59.000Z

473

ADVANCED TECHNIQUES FOR RESERVOIR SIMULATION AND MODELING OF NONCONVENTIONAL WELLS  

SciTech Connect

Nonconventional wells, which include horizontal, deviated, multilateral and ''smart'' wells, offer great potential for the efficient management of oil and gas reservoirs. These wells are able to contact larger regions of the reservoir than conventional wells and can also be used to target isolated hydrocarbon accumulations. The use of nonconventional wells instrumented with downhole inflow control devices allows for even greater flexibility in production. Because nonconventional wells can be very expensive to drill, complete and instrument, it is important to be able to optimize their deployment, which requires the accurate prediction of their performance. However, predictions of nonconventional well performance are often inaccurate. This is likely due to inadequacies in some of the reservoir engineering and reservoir simulation tools used to model and optimize nonconventional well performance. A number of new issues arise in the modeling and optimization of nonconventional wells. For example, the optimal use of downhole inflow control devices has not been addressed for practical problems. In addition, the impact of geological and engineering uncertainty (e.g., valve reliability) has not been previously considered. In order to model and optimize nonconventional wells in different settings, it is essential that the tools be implemented into a general reservoir simulator. This simulator must be sufficiently general and robust and must in addition be linked to a sophisticated well model. Our research under this five year project addressed all of the key areas indicated above. The overall project was divided into three main categories: (1) advanced reservoir simulation techniques for modeling nonconventional wells; (2) improved techniques for computing well productivity (for use in reservoir engineering calculations) and for coupling the well to the simulator (which includes the accurate calculation of well index and the modeling of multiphase flow in the wellbore); and (3) accurate approaches to account for the effects of reservoir heterogeneity and for the optimization of nonconventional well deployment. An overview of our progress in each of these main areas is as follows. A general purpose object-oriented research simulator (GPRS) was developed under this project. The GPRS code is managed using modern software management techniques and has been deployed to many companies and research institutions. The simulator includes general black-oil and compositional modeling modules. The formulation is general in that it allows for the selection of a wide variety of primary and secondary variables and accommodates varying degrees of solution implicitness. Specifically, we developed and implemented an IMPSAT procedure (implicit in pressure and saturation, explicit in all other variables) for compositional modeling as well as an adaptive implicit procedure. Both of these capabilities allow for efficiency gains through selective implicitness. The code treats cell connections through a general connection list, which allows it to accommodate both structured and unstructured grids. The GPRS code was written to be easily extendable so new modeling techniques can be readily incorporated. Along these lines, we developed a new dual porosity module compatible with the GPRS framework, as well as a new discrete fracture model applicable for fractured or faulted reservoirs. Both of these methods display substantial advantages over previous implementations. Further, we assessed the performance of different preconditioners in an attempt to improve the efficiency of the linear solver. As a result of this investigation, substantial improvements in solver performance were achieved.

Louis J. Durlofsky; Khalid Aziz

2004-08-20T23:59:59.000Z

474

Metal catalyst technique for texturing silicon solar cells  

DOE Patents (OSTI)

Textured silicon solar cells and techniques for their manufacture utilizing metal sources to catalyze formation of randomly distributed surface features such as nanoscale pyramidal and columnar structures. These structures include dimensions smaller than the wavelength of incident light, thereby resulting in a highly effective anti-reflective surface. According to the invention, metal sources present in a reactive ion etching chamber permit impurities (e.g. metal particles) to be introduced into a reactive ion etch plasma resulting in deposition of micro-masks on the surface of a substrate to be etched. Separate embodiments are disclosed including one in which the metal source includes one or more metal-coated substrates strategically positioned relative to the surface to be textured, and another in which the walls of the reaction chamber are pre-conditioned with a thin coating of metal catalyst material.

Ruby, Douglas S. (Albuquerque, NM); Zaidi, Saleem H. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

475

Applying Data Privacy Techniques on Tabular Data in Uganda  

E-Print Network (OSTI)

The growth of Information Technology(IT) in Africa has led to an increase in the utilization of communication networks for data transaction across the continent. A growing number of entities in the private sector, academia, and government, have deployed the Internet as a medium to transact in data, routinely posting statistical and non statistical data online and thereby making many in Africa increasingly dependent on the Internet for data transactions. In the country of Uganda, exponential growth in data transaction has presented a new challenge: What is the most efficient way to implement data privacy. This article discusses data privacy challenges faced by the country of Uganda and implementation of data privacy techniques for published tabular data. We make the case for data privacy, survey concepts of data privacy, and implementations that could be employed to provide data privacy in Uganda.

Mivule, Kato

2011-01-01T23:59:59.000Z

476

Assurance and assessment techniques for nuclear weapon related software  

SciTech Connect

Sandia National Laboratories has the qualification evaluation responsibility for the design of certain components intended for use in nuclear weapons. Specific techniques in assurance and assessment have been developed to provide the quality evidence that the software has been properly qualified for use. Qualification Evaluation is a process for assessing the suitability of either a process used to develop or manufacture the product, or the product itself The qualification process uses a team approach to evaluating a product or process, chaired by a Quality Assurance professional, with other members representing the design organization, the systems organization, and the production agency. Suitable for use implies that adequate and appropriate definition and documentation has been produced and formally released, adequate verification and validation activities have taken place to ensure proper operation, and the software product meets all requirements, explicitly or otherwise.

Blackledge, M.A. [Sandia National Labs., Albuquerque, NM (United States). Quality Engineering Department

1993-12-31T23:59:59.000Z

477

Assurance and assessment techniques for nuclear weapon related software  

SciTech Connect

Sandia National Laboratories has the qualification evaluation responsibility for the design of certain components intended for use in nuclear weapons. Specific techniques in assurance and assessment have been developed to provide the quality evidence that the software has been properly qualified for use. Qualification Evaluation is a process for assessing the suitability of either a process used to develop or manufacture the product, or the product itself. The qualification process uses a team approach to evaluating a product or process, chaired by a Quality Assurance professional, with other members representing the design organization, the systems organization, and the production agency. Suitable for use implies that adequate and appropriate definition and documentation has been produced and formally released, adequate verification and validation activities have taken place to ensure proper operation, and the software product meets all requirements, explicitly or otherwise.

Blackledge, M.A.

1993-07-01T23:59:59.000Z

478

Assurance and assessment techniques for nuclear weapon related software  

SciTech Connect

Sandia National Laboratories has the qualification evaluation responsibility for the design of certain components intended for use in nuclear weapons. Specific techniques in assurance and assessment have been developed to provide the quality evidence that the software has been properly qualified for use. Qualification Evaluation is a process for assessing the suitability of either a process used to develop or manufacture the product, or the product itself. The qualification process uses a team approach to evaluating a product or process, chaired by a Quality Assurance professional, with other members representing the design organization, the systems organization, and the production agency. Suitable for use implies that adequate and appropriate definition and documentation has been produced and formally released, adequate verification and validation activities have taken place to ensure proper operation, and the software product meets all requirements, explicitly or otherwise.

Blackledge, M.A.

1993-01-01T23:59:59.000Z

479

Top-quark mass measurements: Alternative techniques (LHC + Tevatron)  

E-Print Network (OSTI)

Measurements of the top-quark mass employing alternative techniques are presented, performed by the D0 and CDF collaborations at the Tevatron as well as the ATLAS and CMS experiments at the LHC. The alternative methods presented include measurements using the lifetime of $B$-hadrons, the transverse momentum of charged leptons and the endpoints of kinematic distributions in top quark anti-quark pair ($t\\bar{t}$) final states. The extraction of the top-quark pole mass from the $t\\bar{t}$ production cross-section and the normalized differential $t\\bar{t}$ + 1-jet cross-section are discussed as well as the top-quark mass extraction using fixed-order QCD predictions at detector level. Finally, a measurement of the top-quark mass using events enhanced in single top t-channel production is presented.

Adomeit, Stefanie

2014-01-01T23:59:59.000Z

480

Feature Selection for Generator Excitation Neurocontroller Development Using Filter Technique  

E-Print Network (OSTI)

Essentially, motive behind using control system is to generate suitable control signal for yielding desired response of a physical process. Control of synchronous generator has always remained very critical in power system operation and control. For certain well known reasons power generators are normally operated well below their steady state stability limit. This raises demand for efficient and fast controllers. Artificial intelligence has been reported to give revolutionary outcomes in the field of control engineering. Artificial Neural Network (ANN), a branch of artificial intelligence has been used for nonlinear and adaptive control, utilizing its inherent observability. The overall performance of neurocontroller is dependent upon input features too. Selecting optimum features to train a neurocontroller optimally is very critical. Both quality and size of data are of equal importance for better performance. In this work filter technique is employed to select independent factors for ANN training.

Abro, Abdul Ghani

2012-01-01T23:59:59.000Z

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481

Improved Combustion Health Monitoring Techniques - Longer Life, Higher Availability  

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

Combustion Health Combustion Health Monitoring Techniques Longer Life, Higher Availability Georgia Tech Jerry Seitzman SR102 * Modern Dry Low Emissions combustors have low emissions, but at a cost - significantly lower availability and reliability than "conventional" systems * The input data to the combustor monitor is pressure fluctuations, same as in currently available systems, but from this project the system analyzes the data differently, accounting for changes such as ambient temperature and doing analyses that show trends which indicate when planned maintenance should be performed to avoid an unplanned shut down. * Technology Transfer: Worked with 3 GT manufacturers. Method licensed to turbine monitoring company and installed at a number of power plants in the United States.

482

Microsoft PowerPoint - SpectroscopyTechniques_XANES  

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

Near Edge Spectroscopy (XANES) Near Edge Spectroscopy (XANES) XANES: XANES: * Element specific * Highly sensitive to bond angles, bond lengths, and the presence of adsorbates NEXAFS (Near Edge X-ray Absorption Fine Structure): * Synonymous with XANES but soft x-ray spectroscopy (< 1keV) * Fine structure within about 30 eV of the absorption edge EXAFS XANES / XRD C bi i S EXAFS-XANES / XRD Combination Spectroscopy * XAFS-XANES and XRD techniques give complementary information about the structure of materials. * XRD is effective in materials with medium- to long-range A typical XANES Spectrum XRD is effective in materials with medium to long range order while XAFS provides short-range information. *The simultaneous collection of the XRD and XAFS- XANES data in situ will allow

483

Two-dimensional Imaging Velocity Interferometry: Technique and Data Analysis  

SciTech Connect

We describe the data analysis procedures for an emerging interferometric technique for measuring motion across a two-dimensional image at a moment in time, i.e. a snapshot 2d-VISAR. Velocity interferometers (VISAR) measuring target motion to high precision have been an important diagnostic in shockwave physics for many years Until recently, this diagnostic has been limited to measuring motion at points or lines across a target. We introduce an emerging interferometric technique for measuring motion across a two-dimensional image, which could be called a snapshot 2d-VISAR. If a sufficiently fast movie camera technology existed, it could be placed behind a traditional VISAR optical system and record a 2d image vs time. But since that technology is not yet available, we use a CCD detector to record a single 2d image, with the pulsed nature of the illumination providing the time resolution. Consequently, since we are using pulsed illumination having a coherence length shorter than the VISAR interferometer delay ({approx}0.1 ns), we must use the white light velocimetry configuration to produce fringes with significant visibility. In this scheme, two interferometers (illuminating, detecting) having nearly identical delays are used in series, with one before the target and one after. This produces fringes with at most 50% visibility, but otherwise has the same fringe shift per target motion of a traditional VISAR. The 2d-VISAR observes a new world of information about shock behavior not readily accessible by traditional point or 1d-VISARS, simultaneously providing both a velocity map and an 'ordinary' snapshot photograph of the target. The 2d-VISAR has been used to observe nonuniformities in NIF related targets (polycrystalline diamond, Be), and in Si and Al.

Erskine, D J; Smith, R F; Bolme, C; Celliers, P; Collins, G

2011-03-23T23:59:59.000Z

484

New techniques for double-layer capacitance measurements at solid metal electrodes  

Science Journals Connector (OSTI)

Two new techniques are described for the measurement of electric double-layer capacitance particularly suited for application to solid electrodes. The capacitance can be recorded as a function of time and/or potential with an accuracy of better than 1%, and a response time in the range of 00101 s, depending on the applied frequency. Measurements on an analogue made of electric capacitors and resistors show the effect of a parallel or series resistance on the measured capacitance at various frequency. Agreement with available data for measurements of the capacitance of mercury in 01 M NaCl and 01 M NaOH has been found.

N. Tshernikovski; E. Gileadi

1971-01-01T23:59:59.000Z

485

Preparation and characterization of indium zinc oxide thin films by electron beam evaporation technique  

SciTech Connect

In this work, the preparation of In{sub 2}O{sub 3}-ZnO thin films by electron beam evaporation technique on glass substrates is reported. Optical and electrical properties of these films were investigated. The effect of dopant amount and annealing temperature on the optical and electrical properties of In{sub 2}O{sub 3}-ZnO thin films was also studied. Different amount of ZnO was used as dopant and the films were annealed at different temperature. The results showed that the most crystalline, transparent and uniform films with lowest resistivity were obtained using 25 wt% of ZnO annealed at 500 {sup o}C.

Keshavarzi, Reza [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Mirkhani, Valiollah, E-mail: mirkhani@sci.ui.ac.ir [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Moghadam, Majid, E-mail: moghadamm@sci.ui.ac.ir [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of) [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Department of Nanotechnology Engineering, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Tangestaninejad, Shahram; Mohammadpoor-Baltork, Iraj [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Chemistry Department, Catalysis Division, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of); Fallah, Hamid Reza; Dastjerdi, Mohammad Javad Vahid; Modayemzadeh, Hamed Reza [Department of Physics, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)] [Department of Physics, University of Isfahan, Isfahan 81746-73441 (Iran, Islamic Republic of)

2011-04-15T23:59:59.000Z

486

An interference removal technique for radio pulsar searches  

Science Journals Connector (OSTI)

......interference (RFI) originates in unshielded electrical equipment which produces discharges, such as automobile ignition systems, electric motors, and fluorescent lighting, as well as discharge from high-voltage power transmission lines......

R. P. Eatough; E. F. Keane; A. G. Lyne

2009-05-01T23:59:59.000Z

487

A dynamic slack management technique for real-time distributed embedded systems  

E-Print Network (OSTI)

This work presents a novel slack management technique, the Service Rate Based Slack Distribution Technique, for dynamic real-time distributed embedded systems targeting the reduction and management of energy consumption. Energy minimization...

Acharya, Subrata

2006-04-12T23:59:59.000Z

488

Measurement of laser frequency response through heterodyne technique using optical modulation  

E-Print Network (OSTI)

An optical modulation technique for measuring the parasitic-free frequency response of high frequency semiconductor lasers is demonstrated. In this technique, we heterodyne light from two continuously tunable external cavity travelling wave ring...

Ahmed, Syed Faisal

2012-06-07T23:59:59.000Z

489

Study of formation and convective transport of aerosols using optical diagnostic technique  

E-Print Network (OSTI)

. To optimize VI performance, the characteristics of convective transport should be identified. This objective is achieved by visualization techniques. The applied visualization techniques are Mie-scattering and laser induced fluorescence (LIF). To investigate...

Kim, Tae-Kyun

2004-09-30T23:59:59.000Z

490

Spatio-temporal analysis of Texas shoreline changes using GIS technique  

E-Print Network (OSTI)

techniques used to study shoreline evolution are generally based on transects perpendicular to a baseline at selected points. But these techniques proved to be less efficient along more complex shorelines, and need to be refined. A new and more reliable...

Arias Moran, Cesar Augusto

2004-09-30T23:59:59.000Z

491

Synthesis and characterization of carbon nanotubes using scanning probe based nano-lithographic techniques  

E-Print Network (OSTI)

A novel process which does not require the traditional Chemical Vapor Deposition (CVD) synthesis techniques and which works at temperatures lower than the conventional techniques was developed for synthesis of carbon nanotubes (CNT). The substrates...

Gargate, Rohit Vasant

2009-05-15T23:59:59.000Z

492

Evaluation of Loss Factor Estimation Techniques for Free Hanging Flat Panels Excited Mechanically  

E-Print Network (OSTI)

To establish the "best" technique to estimate a damping loss factor for mechanically-excited panels, three loss factor estimation techniques--PIM, IRDM, and RDT--are compared. In experimental and computational analyses, ...

Dande, Himanshu Amol

2013-05-31T23:59:59.000Z

493

Study of natural convection heat transfer above a horizontal heated plate using a laser specklegram technique  

E-Print Network (OSTI)

Heat transfer by free convection in air from an isothermal horizontal heated flat plate facing upward has been experimentally studied by using a non intrusive and accurate optical technique, Speckle photography or a specklegram technique. The local...

Cheeti, Satish K.R.

2012-06-07T23:59:59.000Z

494

Using Visualization Techniques and Gamification to Involve Users in Requirements Elicitation  

E-Print Network (OSTI)

Using Visualization Techniques and Gamification to Involve Users in Requirements Elicitation Diogo of visualization techniques and gamification. Requirements visualizations are used to stimulate stakeholders and increase their awareness about requirements. Social visualization and gamification of the elicitation

da Silva, Alberto Rodrigues

495

Measurement of in-service vibration of interior mirrors using virtual laser technique  

Science Journals Connector (OSTI)

The Spanish company IDIADA AT, Santa Oliva (Tarragona), has developed a novel measurement technique that uses a virtual laser technique to quantify in-service vibration levels of interior and exterior mirrors and...

Carlos Grasas; Juan Jesus Garca

2001-10-01T23:59:59.000Z

496

Simulation and Modeling Techniques for Signal Integrity and Electromagnetic Interference on High Frequency Electronic Systems.  

E-Print Network (OSTI)

Simulation and Modeling Techniques for Signal Integrity and Electromagnetic Interference on High and Modeling Techniques for Signal Integrity and Electromagnetic Interference on High Frequency Electronic Integrity and Electromagnetic Interference on High Frequency Electronic Systems. by Luca Daniel Doctor

Daniel, Luca

497

EVALUATION TECHNIQUE IN THE SPI-CALCULUS FOR CRYPTOGRAPHIC PROTOCOLS Hasan M. Al-Refai  

E-Print Network (OSTI)

EVALUATION TECHNIQUE IN THE SPI-CALCULUS FOR CRYPTOGRAPHIC PROTOCOLS Hasan M. Al-Refai halrefai@philadelphia.edu.jo Hasan_alrefai@yahoo.com Mobile Phone #: 00962-777357755 Abstract Bisimulation as a technique could

498

An Empirical Study of Block Matching Techniques for the Detection of Moving Objects  

E-Print Network (OSTI)

traffic and weather conditions are used to evaluate the techniques. A coherence metric and the average of motion detection. We present an empirical study of the block matching techniques using these metrics

Kamath, Chandrika

499

A Technique for Deducing Wind Direction from Satellite Microwave Measurements of Wind Speed  

Science Journals Connector (OSTI)

A technique is presented to deduce wind direction from satellite microwave measurements of wind speed information. The technique, based on simple Ekman boundary layer dynamics, makes use of surface pressure fields routinely analyzed at the ...

Tsann-wang Yu

1987-09-01T23:59:59.000Z

500

Recent news and results in the computation of NLO processes with new techniques  

E-Print Network (OSTI)

I illustrate new techniques and recently obtained results in the computation of perturbative QCD processes at the NLO accuracy

Roberto Pittau

2011-05-02T23:59:59.000Z