Powered by Deep Web Technologies
Note: This page contains sample records for the topic "abu safah field" 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.


1

Abu Dhabi presses oil development program  

SciTech Connect

This paper reports that Abu Dhabi Co. for Onshore Operations (ADCO), the biggest oil producer in the United Arab Emirates, reports 1991 was a successful year despite the Persian Gulf war. Meantime, Abu Dhabi's Zakum, the second largest oil field in the Persian Gulf, boosted production to more than 300,000 b/d, and officials said production will rise further when a platform complex is recommissioned in 1993.

Not Available

1992-06-29T23:59:59.000Z

2

Masdar Abu Dhabi Future Energy Company | Open Energy Information  

Open Energy Info (EERE)

Masdar Abu Dhabi Future Energy Company Masdar Abu Dhabi Future Energy Company Jump to: navigation, search Name Masdar Abu Dhabi Future Energy Company Place Abu Dhabi, United Arab Emirates Sector Renewable Energy Product Abu Dhabi- based subsidiary created to manage the implementation of renewable and alternative energy initiatives. References Masdar Abu Dhabi Future Energy Company[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Masdar Abu Dhabi Future Energy Company is a company located in Abu Dhabi, United Arab Emirates . References ↑ "Masdar Abu Dhabi Future Energy Company" Retrieved from "http://en.openei.org/w/index.php?title=Masdar_Abu_Dhabi_Future_Energy_Company&oldid=348663

3

A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak Nael B. Abu-Ghazaleh Wendi Heinzelman  

E-Print Network (OSTI)

A Taxonomy of Wireless Micro-Sensor Network Models £ Sameer Tilak Nael B. Abu-Ghazaleh Wendi wireless networks. This paper examines this emerging field to clas- sify wireless micro-sensor networks to classify wireless micro-sensor networks. In partic- ular, we classify the aspects of wireless micro

Han, Richard Y.

4

Abu Dhabi Supreme Petroleum Council | Open Energy Information  

Open Energy Info (EERE)

Abu Dhabi Supreme Petroleum Council Abu Dhabi Supreme Petroleum Council Jump to: navigation, search Logo: Supreme Petroleum Council Country United Arab Emirates Name Supreme Petroleum Council City Abu Dhabi Website http://www.abudhabi.ae/egovPoo Coordinates 24.4615061518°, 54.3242812157° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":24.4615061518,"lon":54.3242812157,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

5

Abu Dhabi National Oil Company | Open Energy Information  

Open Energy Info (EERE)

Oil Company Oil Company Jump to: navigation, search Logo: Abu Dhabi National Oil Company Name Abu Dhabi National Oil Company Place Abu Year founded 1971 Phone number 971-2-6020000 Website http://www.adnoc.ae/default.as Coordinates 24.493064080334°, 54.370239274576° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":24.493064080334,"lon":54.370239274576,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

6

Gender and the homoerotic logic of torture at Abu Ghraib  

E-Print Network (OSTI)

by sociologists Phillip Zimbardo and the application of his Stanford Prison Study to the events of Abu Ghraib. v DEDICATION The following project is dedicated to my family and friends who have helped me lovingly realize my dream imagined, and to my... that the narratives from which to understand the abuse at Abu Ghraib can be found through an analysis of group conformity, and in terms of his 1971 Stanford County Prison Study. Still a further understanding of this abuse can be found in Stanley Milgram?s study...

Caldwell, Ryan Ashley

2009-05-15T23:59:59.000Z

7

STRUCTURAL HEALTH MONITORING OF UNIQUE STRUCTURES IN ABU DHABI EMIRATE  

E-Print Network (OSTI)

, and to develop instantaneous damage and loss maps. As part of the Emirate of Abu Dhabi Seismic Hazard and Risk-of-the-art SHM systems. Typical systems are composed of up to 30 accelerometers within the building, a wind velocity/direction sensor at the roof, and a three-component downhole accelerometer near the building

Boyer, Edmond

8

Abu Dhabi, United Arab Emirates: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Dhabi, United Arab Emirates: Energy Resources Dhabi, United Arab Emirates: Energy Resources Jump to: navigation, search Name Abu Dhabi, United Arab Emirates Equivalent URI DBpedia GeoNames ID 292968 Coordinates 24.46667°, 54.36667° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":24.46667,"lon":54.36667,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

9

Secretary Chu to Attend Second Clean Energy Ministerial in Abu Dhabi,  

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

Secretary Chu to Attend Second Clean Energy Ministerial in Abu Secretary Chu to Attend Second Clean Energy Ministerial in Abu Dhabi, United Arab Emirates Secretary Chu to Attend Second Clean Energy Ministerial in Abu Dhabi, United Arab Emirates April 1, 2011 - 12:00am Addthis WASHINGTON, D.C. - Secretary of Energy Steven Chu will attend the second Clean Energy Ministerial in Abu Dhabi, United Arab Emirates, on April 6-7, 2011. The Clean Energy Ministerial, launched by Secretary Chu in Washington, D.C., on July 19-20, 2010, is a forum for ministers from the world's major economies to work together to transition to clean energy technologies. Participating governments account for 80 percent of global greenhouse gas emissions and more than 70 percent of global gross domestic product. They also fund the vast majority of public research and development in clean

10

E-Print Network 3.0 - abu marawat gold Sample Search Results  

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

Um Balad, 3 Fatira, 4 Abu Marawat, 5 Semma, 6... - posed in the Eastern Desert of Egypt have long been known to host gold, with more than 95 occurrences so... vein gold...

11

Some Aspects of the Diagenetic History of the Sabkha in Abu Dhabi, Persian Gulf  

Science Journals Connector (OSTI)

Sedimentary accretion around the landward margins of coastal lagoons in Abu Dhabi has produced a low accretion plain, the sabkha. Concentrated sea water from the adjacent lagoon seeps into the sabkha sedimen...

P. Bush

1973-01-01T23:59:59.000Z

12

Abu Dhabi's Masdar project: dazzling? or Just a mirage?  

SciTech Connect

The Masdar project is to build a self-contained economic zone creating 70,000 jobs and eventually housing as many as 40,000 residents in the middle of the desert by 2016. The community, which is envisioned to house a science and technology park and housing, is designed to be carbon neutral and virtually waste-free. Two-thirds of the power is to come from a 10 MW solar farm, and nearly all water is to be recycled and reused. There will be virtually no waste, as all packaging and material are to be recycled, used for power generation or turned into compost. The car-free zone will be served by advanced personal rapid transit (PRT) vehicles that will zip residents around the 6.5-square-kilometer area. The problem with Masdar is not so much what goes inside it, but rather what is outside. Masdar is unlikely to change the image of Abu Dhabi as the most carbon-intensive place on earth.

NONE

2009-06-15T23:59:59.000Z

13

Copyright 2006, Society of Petroleum Engineers This paper was prepared for presentation at the 2006 Abu Dhabi International Petroleum  

E-Print Network (OSTI)

Copyright 2006, Society of Petroleum Engineers This paper was prepared for presentation at the 2006 Abu Dhabi International Petroleum Exhibition and Conference held in Abu Dhabi, U.A.E., 5­8 November not been reviewed by the Society of Petroleum Engineers and are subject to correction by the author

Mohaghegh, Shahab

14

Seismic modelling of a fractured carbonate reservoir in Abu Dhabi, United Arab Emirates  

E-Print Network (OSTI)

Seismic modelling of a fractured carbonate reservoir in Abu Dhabi, United Arab Emirates Mohammed Y is required to optimize hydrocarbon production. A rock containing parallel fractures can be seismically to the seismic wavelength. Seismic anisotropy may be detectable from attributes of pre-stack 3-D seismic data

Ali, Mohammed

15

Carnets de Gologie / Notebooks on Geology -Letter CG2011/04 (CG2011_L04) Aptian ammonites of Abu Dhabi  

E-Print Network (OSTI)

and neighboring countries (Oman, Qatar, ...). Ammonites had been reported in the oil wells of offshore Abu Dhabi BUSNARDO 1 Bruno GRANIER 2 Abstract: The identification of some twenty ammonite fragments from oil wells

Boyer, Edmond

16

Scalable Parallel Algorithms for FPT Problems Faisal N. Abu-Khzam, Michael A. Langston  

E-Print Network (OSTI)

is whether G contains a set C of k or fewer vertices that covers every edge in G, where an edge is said-fastest algorithm currently known for vertex cover is due to the work of Chen et al [10], and runs in O(1.2852k +knScalable Parallel Algorithms for FPT Problems Faisal N. Abu-Khzam, Michael A. Langston , Pushkar

Kihara, Daisuke

17

Automated Addition of Fault-Tolerance to SCR Toolset: A case study1 Fuad Abu-Jarad Sandeep S. Kulkarni  

E-Print Network (OSTI)

1/10 Automated Addition of Fault-Tolerance to SCR Toolset: A case study1 Fuad Abu-Jarad Sandeep S-tolerance to the SCR tools. We illustrate our approach using two case studies: an altitude switch controller and an automobile cruise controller. Keywords: SCR tools, Automated addition of fault-tolerance, Event

Kulkarni, Sandeep

18

INTEGRATED MOBILE IP AND SIP APPROACH FOR ADVANCED LOCATION MANAGEMENT Q Wang and M A Abu-Rgheff  

E-Print Network (OSTI)

INTEGRATED MOBILE IP AND SIP APPROACH FOR ADVANCED LOCATION MANAGEMENT Q Wang and M A Abu-Rgheff University of Plymouth, UK ABSTRACT The vision of ubiquitous and continuous communications for a mobile user entails several emerging mobility types, which pose new requirements for location management

Abu-Rgheff, Mosa Ali

19

The relationship between petroleum emplacement and carbonate reservoir quality: examples from Abu Dhabi and the Amu Darya Basin  

Science Journals Connector (OSTI)

The relative importance of petroleum emplacement in inhibiting diagenetic processes and preserving porosity and permeability in Lower Cretaceous, Thamama Group (Kharaib Formation) carbonate reservoirs of Abu Dhabi, UAE, and in Callovian-Kimmeridgian carbonate reservoirs of the Amu Darya Basin in Uzbekistan and Turkmenistan, has been evaluated by combining geologic, petrophysical and geochemical data. When petroleum emplacement is synchronous with and prior to significant burial cementation in carbonates, primary petroleum inclusions are trapped in the cements. The process appears to be characterised by steep intra-field porosity-depth trends within a more gradual regional decline in porosity with depth. This has profound implications for the prediction of porosity in carbonate reservoirs. Reservoir quality is better in grainstones and packstones compared to adjacent wackestones and lime mudstones in the Kharaib Formation because of preserved macroporosity (intergranular, vuggy, mouldic); the pore system in the finer units is dominated by micropores. These features indicate a primary textural control on porosity and permeability. Within the grainstones and packstones, macroporosity is variably filled by late equant sparry calcite cements. Porosity and permeability variations in grainstones and packstones at a reservoir scale are therefore controlled by the variation in amount of equant sparry calcite cement. This in turn depends on the timing of the precipitation of this cement relative to petroleum emplacement, as shown by fluid inclusion data. Where petroleum emplacement has occurred relatively early, at migration foci, prior to significant burial cementation by equant sparry calcite, reservoir quality is preserved. Where it has occurred after significant burial cementation, reservoir quality has been destroyed. In the Amu Darya sequences, primary macroporosity is commonly preserved down to depths of 11,000 ft (3.5 km) with differences in the porosity and permeability characteristics of grainstones being controlled by variations in the amount of early, probably freshwater, cement and the extent of associated dissolution. Small volumes of burial cements do occur, but they do not contain petroleum inclusions. Consequently, there is no firm evidence that petroleum emplacement has inhibited diagenesis in this area. This part of the study has shown that it is not always possible to obtain conclusive evidence from the diagenesis to pin down the processes responsible for the preservation of reservoir quality and that petroleum filling may not always be the primary cause. The relationships documented here show that the race for space between diagenetic waters and petroleum is a major control on reservoir quality in the Thamama Group carbonate reservoirs, but is not so important for the Jurassic carbonates in the Amu Darya basin.

Joyce E. Neilson; Norman H. Oxtoby; Michael D. Simmons; Ivor R. Simpson; Natalia K. Fortunatova

1998-01-01T23:59:59.000Z

20

Optimization of a solar powered absorption cycle under Abu Dhabi's weather conditions  

SciTech Connect

In order for the solar absorption air conditioners to become a real alternative to the conventional vapour compression systems, their performance has to be improved and their total cost has to be reduced. A solar powered absorption cycle is modeled using the Transient System Simulation (TRNSYS) program and Typical Meteorological Year 2 data of Abu Dhabi. It uses evacuated tube collectors to drive a 10 kW ammonia-water absorption chiller. Firstly, the system performance and its total cost are optimized separately using single objective optimization algorithms. The design variables considered are: the collector slope, the collector mass flow rate, the collector area and the storage tank volume. The single objective optimization results show that MATLAB global optimization methods agree with the TRNSYS optimizer. Secondly, MATLAB is used to solve a multi-objective optimization problem to improve the system's performance and cost, simultaneously. The optimum designs are presented using Pareto curve and show the potential improvements of the baseline system. (author)

Al-Alili, A.; Hwang, Y.; Radermacher, R. [Department of Mechanical Engineering, University of Maryland, College Park, MD (United States); Kubo, I. [Department of Mechanical Engineering, The Petroleum Institute, Abu Dhabi (United Arab Emirates)

2010-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Abu Dhabi sabkha, Persian Gulf, revisited: Application of strontium isotopes to test an early dolomitization model  

SciTech Connect

A study of brines and diagenetically altered minerals from coastal sabkha of Abu Dhabi, Persian Gulf, was undertaken to test the flood recharge-evaporative pumping model for early dolomitization using strontium isotopes as a tracer. The {sup 87}Sr/{sup 86}Sr ratio of the sabkha brines defines a pattern of both horizontal and vertical mixing of coastal seawater and continental ground water consistent with a previously proposed model. The {sup 87}Sr/{sup 86}Sr ratio of the diagenetic dolomites indicates early dolomitization by marine recharge waters. The {sup 87}Sr/{sup 86}Sr ratio of gypsum from the dolomitization area (1.4 to 4.4 km from high-tide mark) and seaward reflects precipitation from marine brines, but more landward (6 to 9 km), gypsum and anhydrite record a continental signal in the minerals suggests a paragenetic evaporative sequence (dolomite {yields} gypsum {yields} anhydrite). The dolomitizing fluid is evaporated seawater that recharges the sabkha aquifer during supratidal flooding and is afterward pumped upward through the saturated zone by evaporative processes.

Mueller, D.W.; McKenzie, J.A. (Swiss Federal Institute of Technology, Zuerick (Switzerland)); Mueller, P.A. (Univ. of Florida, Gainesville (USA))

1990-07-01T23:59:59.000Z

22

field  

National Nuclear Security Administration (NNSA)

9%2A en Ten-Year Site Plans (TYSP) http:nnsa.energy.govaboutusouroperationsinfopsinfopstysp

field field-type-text field-field-page-name">

23

"!$#%!$&'&)(0 1234657!$&'98@!$ACBD"EF(GH7!$#%&PI Sameer TilakQ , Nael B. Abu-GhazalehQ and Wendi HeinzelmanR  

E-Print Network (OSTI)

examines this emerging field to classify wireless micro-sensor networks accord- ing to different networks with differing requirements. We believe that a better understanding of micro-sensor network re designers. To this end, in this paper we attempt to classify wireless micro-sensor networks. In particular

Heinzelman, Wendi

24

Practice Field Practice Field  

E-Print Network (OSTI)

Courts Soccer Field Swimming pool Bandeen Hall Mountain House # 3 # 2 Golf Course Security Patterson Hall.B. Scott Arena Library Centennial Theater Mc Greer Hall Pollack Hall New Johnson Science Building Dewhurst Dining Hall Champlain Regional College # 4 Mackinnon Hall Residence # 6 Memorial House Retired Faculty

25

Irma E Abu-Jumah Amy L Adams Termotto  

E-Print Network (OSTI)

Timothy Shaun Curtis Colleen A D'angelo Susan W Darby Patricia K Davis Ann M Delario Shaun K Demartinis Kearney Elizabeth A Keirstead Roselie P Kelemen Tracy A Kenney Kathryn L Keymel

Mahon, Bradford Z.

26

Arun field  

SciTech Connect

The Arun field is a giant gas-condensate field operated by Mobil and Pertamina with over 20,000 acres of closure at the top of the Arun reservoir. A middle-shelf patch reef complex of early to middle Miocene age is the producing facies at the Arun field. About 1,100 ft of porous limestones, encased in shales, create a stratigraphic trap for overpressure hydrocarbons. Three main carbonate lithologies were encountered during the examination of over 4,300 ft of core; (1) a reef facies consisting of vuggy, coral encrusting, red-algal boundstones, (2) a near-reef facies consisting of foraminiferal, mixed-skeletal packstones with gravel-size coral fragments, and (3) an interreef lagoonal facies consisting of benthonic-foram packstones. Twenty-two species of corals have been identified from Arun reef facies; major reef-forming coals, listed in order of decreasing abundance, are Porites cf P. Lutes, Cyphastrea microphthalma, Astreopora myriophthalma, Styloconiella gunetheri, Porites solida, and Acropora ssp. The Arun reef is comprised of limestones (with minor amounts of dolomite). No shale beds occur in the sequence, and all carbonate facies are in communication. A pervasive microporosity, occurring throughout the Arun Limestone, results from meteoric alteration of original carbonate mud to form a microrhombic porosity that accounts for about three-fourths of the field's total porosity.

Jordan, C.F. Jr.; Abdullah, M.

1988-01-01T23:59:59.000Z

27

Carnets de Gologie / Notebooks on Geology -Article 2003/04 (CG2003_A04_BG) A new approach in rock-typing, documented by a case study of layer-cake  

E-Print Network (OSTI)

; chalk; rock-typing; porosity; permeability; rock-type; Abu Dhabi Citation: GRANIER B. (2003).- A new in rock-typing, documented by a case study of layer-cake reservoirs in field "A", offshore Abu Dhabi (U.A.E.) Bruno GRANIER 1 Abstract: In carbonate reservoirs, the relationship between porosity ?, a measure

Brest, Université de

28

Nevada Field Office  

National Nuclear Security Administration (NNSA)

about NNSS

field field-type-text field-field-sidebar-content">
field-items">
field-item odd">
29

Magnetic Field Safety Training  

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

Safety Training Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain...

30

Magnetic Field Safety Magnetic Field Safety  

E-Print Network (OSTI)

Magnetic Field Safety Training #12;Magnetic Field Safety Strong Magnetic Fields exist around energized magnets. High magnetic fields alone are a recognized hazard only for personnel with certain medical conditions such as pacemakers, magnetic implants, or embedded shrapnel. In addition, high magnetic

McQuade, D. Tyler

31

Golden Field Office Contacts  

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

Field contacts at the U.S. Department of Energy's Golden Field Office who support the Federal Energy Management Program (FEMP)

32

Quantum Field Theory & Gravity  

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

Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email...

33

Determination of Electric-Field, Magnetic-Field, and Electric...  

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

Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Determination of Electric-Field, Magnetic-Field, and Electric-Current...

34

Golden Field Office  

Office of Energy Efficiency and Renewable Energy (EERE)

The Golden Field Office was designated a Department of Energy field office in December 1992 to provide EERE with enhanced capability to develop and commercialize renewable energy and energy...

35

Smoothness- transferred random field  

E-Print Network (OSTI)

We propose a new random field (RF) model, smoothness-transfer random field (ST-RF) model, for image modeling. In the objective function of RF models, smoothness energy is defined with compatibility function to capture the ...

Wei, Donglai

2013-01-01T23:59:59.000Z

36

Heliostat Field Performance  

Science Journals Connector (OSTI)

The heliostat is the first subsystem in a central ... report of the SSPS Central Receiver System.The heliostat field was designed and manufactured by the ... Corporation.The original field design consisted of 160...

Pierre Wattiez; Juan Ramos; Sevillana

1986-01-01T23:59:59.000Z

37

Quantized Gravitational Field. II  

Science Journals Connector (OSTI)

A consistent formulation is given for the quantized gravitational field in interaction with integer spin fields. Lorentz transformation equivalence within a class of physically distinguished coordinate systems is verified.

Julian Schwinger

1963-11-01T23:59:59.000Z

38

BUFFERED WELL FIELD OUTLINES  

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

OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS OIL & GAS FIELD OUTLINES FROM BUFFERED WELLS The VBA Code below builds oil & gas field boundary outlines (polygons) from buffered wells (points). Input well points layer must be a feature class (FC) with the following attributes: Field_name Buffer distance (can be unique for each well to represent reservoirs with different drainage radii) ...see figure below. Copy the code into a new module. Inputs: In ArcMap, data frame named "Task 1" Well FC as first layer (layer 0). Output: Polygon feature class in same GDB as the well points FC, with one polygon field record (may be multiple polygon rings) per field_name. Overlapping buffers for the same field name are dissolved and unioned (see figure below). Adds an attribute PCTFEDLAND which can be populated using the VBA

39

Intrinsic Magnetic Fields  

Science Journals Connector (OSTI)

Emission theory of electromagnetic fields.(1) Intrinsic magnetic field. The intrinsic magnetic field of a point charge is defined as that portion of the field which cannot be annihilated by the Lorentz transformation. It is shown that the intrinsic field can be represented by lines of force carried by the same moving elements as carry the electric field, and a potential is given for it. (2) Frequency of emission of moving elements. A relation between the frequency of emission of moving elements and the number of lines of force to a tube is deduced on the assumption that the latter number is the same for the electric and magnetic fields and that each moving element marks the intersection of an electric and magnetic line of force.

Leigh Page

1923-08-01T23:59:59.000Z

40

Field emission electron source  

DOE Patents (OSTI)

A novel field emitter material, field emission electron source, and commercially feasible fabrication method is described. The inventive field emission electron source produces reliable electron currents of up to 400 mA/cm.sup.2 at 200 volts. The emitter is robust and the current it produces is not sensitive to variability of vacuum or the distance between the emitter tip and the cathode. The novel emitter has a sharp turn-on near 100 volts.

Zettl, Alexander Karlwalter (Kensington, CA); Cohen, Marvin Lou (Berkeley, CA)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Hot Pot Field Observations  

SciTech Connect

Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

Lane, Michael

2013-06-28T23:59:59.000Z

42

Hot Pot Field Observations  

DOE Data Explorer (OSTI)

Map of field observations including depressions, springs, evidence of former springs, travertine terraces and vegetation patterns. Map also contains interpretation of possible spring alignments.

Lane, Michael

43

Field of Expertise Biotechnology  

E-Print Network (OSTI)

Field of Expertise Human- & Biotechnology #12;Human- and biotechnology is one of the key possible by research in human- and biotechnology is not just restricted to medicine and pharmacy, but also laboratory to support introduction of medical products to the market. In the field of biotechnology, Graz

44

Diamond fiber field emitters  

DOE Patents (OSTI)

A field emission electron emitter comprising an electrode formed of at least one diamond, diamond-like carbon or glassy carbon composite fiber, said composite fiber having a non-diamond core and a diamond, diamond-like carbon or glassy carbon coating on said non-diamond core, and electronic devices employing such a field emission electron emitter.

Blanchet-Fincher, Graciela B. (Wilmington, DE); Coates, Don M. (Santa Fe, NM); Devlin, David J. (Los Alamos, NM); Eaton, David F. (Wilmington, DE); Silzars, Aris K. (Landenburg, PA); Valone, Steven M. (Santa Fe, NM)

1996-01-01T23:59:59.000Z

45

Abandoned oil fields in Oklahoma  

SciTech Connect

Data are presented for approximately 165 abandoned oil fields in Oklahoma that have produced 10,000 or more barrels of oil prior to abandonment. The following information is provided for each field: county; DOE field code; field name; AAPG geologic province code; discovery date of field; year of last production, if known; discovery well operator; proven acreage; formation thickness; depth of field; gravity of oil production; calendar year; yearly field oil production; yearly field gas production; cumulative oil production; cumulative gas production; number abandoned fields in county; cumulative production of oil from fields; and cumulative production of gas from fields. (ATT)

Chism, J.

1983-08-01T23:59:59.000Z

46

THE GALACTIC MAGNETIC FIELD  

SciTech Connect

With this Letter, we complete our model of the Galactic magnetic field (GMF), by using the WMAP7 22 GHz total synchrotron intensity map and our earlier results to obtain a 13-parameter model of the Galactic random field, and to determine the strength of the striated random field. In combination with our 22-parameter description of the regular GMF, we obtain a very good fit to more than 40,000 extragalactic Faraday rotation measures and the WMAP7 22 GHz polarized and total intensity synchrotron emission maps. The data call for a striated component to the random field whose orientation is aligned with the regular field, having zero mean and rms strength Almost-Equal-To 20% larger than the regular field. A noteworthy feature of the new model is that the regular field has a significant out-of-plane component, which had not been considered earlier. The new GMF model gives a much better description of the totality of data than previous models in the literature.

Jansson, Ronnie; Farrar, Glennys R. [Center for Cosmology and Particle Physics, Department of Physics, New York University, New York, NY 10003 (United States)

2012-12-10T23:59:59.000Z

47

Analysis Driven Field Testing  

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

ANALYSIS DRIVEN FIELD TESTING ANALYSIS DRIVEN FIELD TESTING Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 MODELING DRIVEN FIELD TESTING Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 MODELING DRIVEN MEASUREMENTS Greg Barker, MEP Paul Norton, NERD C.E. Hancock, MEP Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 Building America Residential Energy Efficiency Stakeholder Meeting Austin, TX March 2, 2012 "Modeling without measuring lacks credibility. Measuring without modeling lacks generality." Ed Hancock

48

Magnetic Field Viewing Cards  

Science Journals Connector (OSTI)

For some years now laminated cards containing a green magnetically sensitive film have been available from science education suppliers. When held near a magnet these cards appear dark green in regions where the field is perpendicular to the card and light green where the field is parallel to the card. The cards can be used to explore the magnetic field near a variety of magnets as well as near wire loops. In this paper we describe how to make these cards and how we have used them in our physics classrooms and labs.

Stephen Kanim; John R. Thompson

2005-01-01T23:59:59.000Z

49

Carlsbad Field Office  

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

of the ORNLCCP Dear Mr. Kieling: This letter transmits the Final Audit Report for Carlsbad Field Office (CBFO) Audit A-14-03 of the Oak Ridge National Laboratory (ORNL) Central...

50

Temporary Hourly Archaeological Field  

E-Print Network (OSTI)

, conduct applied research, and offer career development and learning opportunities to support resource carpooled. RESPONSIBILITIES Under the general direction of the CEMML archaeological Crew Chief, conduct archaeological field work involving archaeological inventory survey operations on various tracts of military

51

Intelligent field emission arrays  

E-Print Network (OSTI)

Field emission arrays (FEAs) have been studied extensively as potential electron sources for a number of vacuum microelectronic device applications. For most applications, temporal current stability and spatial current ...

Hong, Ching-yin, 1973-

2003-01-01T23:59:59.000Z

52

subsurface geological field | EMSL  

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

transport of U(VI) at the field-scale. The results indicate that multi-rate U(VI) sorptiondesorption, U(VI) surface complexation reactions, and initial U(VI) concentrations...

53

EMSL - subsurface geological field  

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

transport of U(VI) at the field-scale. The results indicate that multi-rate U(VI) sorptiondesorption, U(VI) surface complexation reactions, and initial U(VI) concentrations...

54

Field Theory of Matter  

Science Journals Connector (OSTI)

A speculative field theory of matter is developed. Simple computational methods are used in a preliminary survey of its consequences. The theory exploits the known properties of leptons by means of a principle of symmetry between electrical and nucleonic charge. There are fundamental fields with spins 0, , 1. The spinless field is neutral. Spin and 1 fields can carry both electrical and nucleonic charge. The multiplicity of any nonzero charge is 3. Explicit dynamical mechanisms for the breakdown of unitary symmetry and for the muon-electron mass difference are given. A more general view of lepton properties is proposed. Mass relations for baryon and meson multiplets are derived, together with approximate couplings among the multiplets. The weakness of ? production in ?-N collisions and the suppression of the ???+? decay is explained.

Julian Schwinger

1964-08-10T23:59:59.000Z

55

Dangerous electromagnetic fields?  

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

Dangerous electromagnetic fields? Dangerous electromagnetic fields? Name: Tommy T Joseph Location: N/A Country: N/A Date: N/A Question: Why are electromagnetic fields supposedly dangerous? Replies: I assume you are asking about power line frequency (60 Hz) fields, since they have been in the news lately. No one knows for sure that they are dangerous. There have been a few studies which seem to show an association between how close homes are to power lines, and the incidence of childhood cancer (mostly leukemia) in children living (or who have lived) in those homes. Other similar studies have not found such an association. In all the studies which have found an association, none has actually measured the fields. Studies which actually have measured the fields find no association. There is no known mechanism for 60 Hz fields to cause cancer. Furthermore, the classic "dose-response relationship," that is, the greater the dose, the greater the response, does not seem to work here. Many laboratory studies have found that 60 Hz fields have an effect on organisms under certain conditions, but none of the observed effects can be convincingly related to a hazard. The bottom line is, no one knows for sure. It is important to realize that it is impossible to prove that anything is completely safe. My personal opinion is that, if there is a risk, it must be very small, or it wouldn't be so hard to prove. I can supply some good unbiased references if you are interested.

56

Magnetic Fields Analogous to electric field, a magnet  

E-Print Network (OSTI)

characteristic of elementary particles such as an electron #12;Magnetic Fields Magnetic field lines Direction;Magnetic Fields Magnetic field lines enter one end (south) of magnet and exit the other end (north) Opposite magnetic poles attract like magnetic poles repel #12;Like the electric field lines

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

57

Field Operations Program  

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

688 688 May 1999 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort D. V. O'Hara L. A. Slezak DOE/ID-10688 Field Operations Program Activities Status Report Fiscal Years 1997 through mid-1999 J. E. Francfort 1 D. V. O'Hara 2 L. A. Slezak 2 Published May 1999 Idaho National Engineering and Environmental Laboratory Automotive Systems and Technology Department Lockheed Martin Idaho Technologies Company Idaho Falls, Idaho 83415 Prepared for the U.S. Department of Energy Idaho Operations Office 1 INEEL/Lockheed Martin Idaho Technologies Co. 2 U.S. Department of Energy iii EXECUTIVE SUMMARY The Field Operations Program is an electric vehicle testing and evaluation program sponsored by U.S. Department of Energy and managed by the Idaho National Engineering and Environmental

58

Coherence of neutron fields  

Science Journals Connector (OSTI)

Glauber's definition of quantum coherence is used for neutron fields under the assumption that the complete occupation number space is a direct product of Fermi subspaces. As a result, completely coherent microfields are obtained which define a density operator in full analogy to Glauber's P representation of boson fields. For better physical significance, a transformation from the P representation to a momentum representation is performed. It is proved that the second-order coherence function in this representation is equivalent to Wolf's second-order coherence function of a classical Dirac field. Finally, the results of the theory are used to calculate explicitly the second-order coherence function and the coherence time of an ideally collimated neutron beam.

E. Ledinegg and E. Schachinger

1983-05-01T23:59:59.000Z

59

Pulsed hybrid field emitter  

DOE Patents (OSTI)

A hybrid emitter exploits the electric field created by a rapidly depoled ferroelectric material. Combining the emission properties of a planar thin film diamond emitter with a ferroelectric alleviates the present technological problems associated with both types of emitters and provides a robust, extremely long life, high current density cathode of the type required by emerging microwave power generation, accelerator technology and display applications. This new hybrid emitter is easy to fabricate and not susceptible to the same failures which plague microstructure field emitter technology. Local electrode geometries and electric field are determined independently from those for optimum transport and brightness preservation. Due to the large amount of surface charge created on the ferroelectric, the emitted electrons have significant energy, thus eliminating the requirement for specialized phosphors in emissive flat-panel displays.

Sampayan, Stephen E. (Manteca, CA)

1998-01-01T23:59:59.000Z

60

Quantized Gravitational Field  

Science Journals Connector (OSTI)

A gravitational action operator is constructed that is invariant under general coordinate transformations and local Lorentz (gauge) transformations. To interpret the formalism the arbitrariness in description must be restricted by introducing gauge conditions and coordinate conditions. The time gauge is defined by locking the time axes of the local coordinate systems to the general coordinate time axis. The resulting form of the action operator, including the contribution of a spinless matter field, enables canonical pairs of variables to be identified. There are four field variables that lack canonical partners, in virtue of differential constraint equations, which can be interpreted as space-time coordinate displacements. In a physically distinguished class of coordinate system the gravitational field variables are not explicit functions of the coordinate displacement parameters. There remains the freedom of Lorentz transformation. The generators of spatial translations and rotations have the correct commutation properties. The question of Lorentz invariance is left undecided since the energy density operator is only given implicitly.

Julian Schwinger

1963-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Fields and Quantum Mechanics  

E-Print Network (OSTI)

The quantum field theories (QFT) constructed in [1,2] include phenomenology of interest. The constructions approximate: scattering by $1/r$ and Yukawa potentials in non-relativistic approximations; and the first contributing order of the Feynman series for Compton scattering. To have a semi-norm, photon states are constrained to transverse polarizations and for Compton scattering, the constructed cross section deviates at large momentum exchanges from the cross section prediction of the Feynman rules. Discussion includes the incompatibility of canonical quantization with the constructed interacting fields, and the role of interpretations of quantum mechanics in realizing QFT.

Glenn Eric Johnson

2014-12-21T23:59:59.000Z

62

SP - 19 Magnetic Field Safety  

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

19 Page 1 Revision 02 August 6, 2007 NATIONAL HIGH MAGNETIC FIELD LABORATORY NHMFL FLORIDA STATE UNIVERSITY SAFETY PROCEDURE SP-19 MAGNETIC FIELD SAFETY ...

63

Maxwell field with Torsion  

E-Print Network (OSTI)

We propose a generalizing gauge-invariant model of propagating torsion which couples to the Maxwell field and to charged particles. As a result we have an Abelian gauge invariant action which leads to a theory with nonzero torsion and which is consistent with available experimental data.

R. Fresneda; M. C. Baldiotti; T. S. Pereira

2014-08-02T23:59:59.000Z

64

Electromagnetic Field Theory  

E-Print Network (OSTI)

physicists around the world and from WWW `hit' statistics it seems that the book serves as a frequently used formulation of classical electrodynamics, force, momentum and energy of the electromagnetic field, radiation and scope to make it useful in higher university education anywhere in the world, it was produced within

Hart, Gus

65

Home Workspace Field Description  

E-Print Network (OSTI)

Proposal Management Reviewer Home Workspace Field Description Last updated: 4/1/2013 1 of 2 http://eresearch.umich.edu Proposal Management Reviewer Home Workspace Your Home Workspace is your launch pad for eResearch Proposal to the project. Who Can See the Reviewer Home Workspace: People with Reviewer or Reviewer Who Can Sign access

Shyy, Wei

66

Bacteriochlorophyll in Electric Field  

Science Journals Connector (OSTI)

We have used time dependent density functional theory (TDDFT) and a multilevel perturbation model to study the transition energies, polarizability, and dipole moments of a bacteriochlorophyll in an electric field. ... coupling strengths yield Car(S1)-to-BChl(Qy) excitation energy transfer times that are in good agreement with recent exptl. ...

Pr Kjellberg; Zhi He; Tnu Pullerits

2003-11-15T23:59:59.000Z

67

Facilities Management Field Services  

E-Print Network (OSTI)

that have gone on there in 2006. My department, Geological Sciences, makes use of all of the field stations the geology of the Australian Plate. Stakeholders who employ geoscience graduates tell use loud and clear of Earth Sciences, ANU, Canberra, to determine the crystallization ages of rocks and minerals using uranium

Hickman, Mark

68

FEASIBILITY OF IN-SITU COMBUSTION OF TAR FROM A TARMAT Sidqi A. Abu-Khamsin  

E-Print Network (OSTI)

HTO = A exp[-EHTO /(RT)] (2) Where A is a frequency factor (consistent units) and R is the universal gas Combustion-tube tests were conducted on a tar of physical and chemical characteristics similar to a natural is difficult to mainatain under ordinary combustion-drive conditions, the tar appeared incapable of supporting

Abu-Khamsin, Sidqi

69

E-Print Network 3.0 - abu rusheid-sikeit shear Sample Search...  

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

4 Precambrian Research 136 (2005) 2750 The Wadi Mubarak belt, Eastern Desert of Egypt Summary: by only sinistral shear. The western domain is about 2 km long and is lo-...

70

E-Print Network 3.0 - abu dhabi emirate Sample Search Results  

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

Day Graduate Student Association Caf Film Series A Breakdown of the Marcellus... Shale Issues 12;Table of Contents United Arab Emirates National Day 2010 Source: Lee,...

71

E-Print Network 3.0 - abu wildlife sanctuary Sample Search Results  

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

FORESTRY SECTOR IN GHANA Ben N. Donkor Summary: wildlife sanctuaries and one strict nature reserve (Figure 1.7). Management plans based on biological... and sociological surveys...

72

ON THE DIOPHANTINE EQUATION x2 F. S. ABU MURIEFAH, F. LUCA, S. SIKSEK, SZ. TENGELY  

E-Print Network (OSTI)

the multi-Frey variant of the modular approach. We illustrate our approach by solving completely of the form x2 + C = yn have been solved using Lebesgue's elementary trick. In 1993, John Cohn [17] published, John Cohn [18], showed that the only solutions to this equation are x = y = 1 and x = 239, y = 13 and n

Siksek, Samir

73

Applicability and Performance of NEMO in Satellite Abu Zafar M. Shahriar  

E-Print Network (OSTI)

44135. wivancic@grc.nasa.gov Abstract--Future Low Earth Orbiting spacecrafts will contain several IP between ground stations as they rotate around the Earth. Future LEO satellites will contain several IP

Atiquzzaman, Mohammed

74

C3Bio.org - Members: View: Mahdi Abu-Omar  

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

16)see more The effect of hydrochloric acid on the conversion of glucose to 5-hydroxymethylfurfural in AlCl3-H2OTHF biphasic medium 0.0 out of 5 stars 13 Sep 2013 |...

75

C3Bio.org - Members: View: Mahdi Abu-Omar  

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

Published On 1 The effect of hydrochloric acid on the conversion of glucose to 5-hydroxymethylfurfural in AlCl3-H2OTHF biphasic medium Publications 0 0 - 13 Sep 2013 2...

76

Methane Hydrate Field Program  

SciTech Connect

This final report document summarizes the activities undertaken and the output from three primary deliverables generated during this project. This fifteen month effort comprised numerous key steps including the creation of an international methane hydrate science team, determining and reporting the current state of marine methane hydrate research, convening an international workshop to collect the ideas needed to write a comprehensive Marine Methane Hydrate Field Research Plan and the development and publication of that plan. The following documents represent the primary deliverables of this project and are discussed in summary level detail in this final report. Historical Methane Hydrate Project Review Report Methane Hydrate Workshop Report Topical Report: Marine Methane Hydrate Field Research Plan Final Scientific/Technical Report

None

2013-12-31T23:59:59.000Z

77

Ca rlsbad Field Office  

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

En ergy En ergy Ca rlsbad Field Office P. O . Box 3090 Carlsbad , New Mexico 88221 AUG 2 9 2013 Mr. John E. Kieling , Chief Hazardous Waste Bureau New Mexico Environment Department 2905 Rodeo Park Drive East, Building 1 Santa Fe, New Mexico 87505-6303 Subject: Notification of Class 1 Permit Modification to the Waste Isolation Pilot Plant Hazardous Waste Facility Permit Number: NM4890139088-TSDF

78

Microbial field pilot study  

SciTech Connect

The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year`s report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1992-03-01T23:59:59.000Z

79

Microbial field pilot study  

SciTech Connect

The objective of this project is to perform a microbial enhanced oil recovery field pilot in the Southeast Vassar Vertz Sand Unit (SEVVSU) in Payne County, Oklahoma. Indigenous, anaerobic, nitrate reducing bacteria will be stimulated to selectively plug flow paths which have been referentially swept by a prior waterflood. This will force future flood water to invade bypassed regions of the reservoir and increase sweep efficiency. This report covers progress made during the second year, January 1, 1990 to December 31, 1990, of the Microbial Field Pilot Study project. Information on reservoir ecology, surface facilities design, operation of the unit, core experiments, modeling of microbial processes, and reservoir characterization and simulation are presented in the report. To better understand the ecology of the target reservoir, additional analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. The results of the produced and injected water analysis show increasing sulfide concentrations with respect to time. In March of 1990 Mesa Limited Partnership sold their interest in the SEVVSU to Sullivan and Company. In April, Sullivan and Company assumed operation of the field. The facilities for the field operation of the pilot were refined and implementation was begun. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. The experiments were performed at SEVVSU temperature using fluids and inoculum from the unit. The model described in last year's report was further validated using results from a core flood experiment. The model was able to simulate the results of one of the core flood experiments with good quality.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1992-03-01T23:59:59.000Z

80

Microbial Field Pilot Study  

SciTech Connect

This report covers progress made during the first year of the Microbial Field Pilot Study project. Information on reservoir ecology and characterization, facility and treatment design, core experiments, bacterial mobility, and mathematical modeling are addressed. To facilitate an understanding of the ecology of the target reservoir analyses of the fluids which support bacteriological growth and the microbiology of the reservoir were performed. A preliminary design of facilities for the operation of the field pilot test was prepared. In addition, procedures for facilities installation and for injection treatments are described. The Southeast Vassar Vertz Sand Unit (SEVVSU), the site of the proposed field pilot study, is described physically, historically, and geologically. The fields current status is presented and the ongoing reservoir simulation is discussed. Core flood experiments conducted during the last year were used to help define possible mechanisms involved in microbial enhanced oil recovery. Two possible mechanisms, relative permeability effects and changes in the capillary number, are discussed and related to four Berea core experiments' results. The experiments were conducted at reservoir temperature using SEVVSU oil, brine, and bacteria. The movement and activity of bacteria in porous media were investigated by monitoring the growth of bacteria in sandpack cores under no flow conditions. The rate of bacteria advancement through the cores was determined. A mathematical model of the MEOR process has been developed. The model is a three phase, seven species, one dimensional model. Finite difference methods are used for solution. Advection terms in balance equations are represented with a third- order upwind differencing scheme to reduce numerical dispersion and oscillations. The model is applied to a batch fermentation example. 52 refs., 26 figs., 21 tabs.

Knapp, R.M.; McInerney, M.J.; Menzie, D.E.; Chisholm, J.L.

1990-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Generalized Gravitational Entropy of Interacting Scalar Field and Maxwell Field  

E-Print Network (OSTI)

The generalized gravitational entropy proposed by Lewkowycz and Maldacena in recent is extended to the interacting real scalar field and Maxwell field system. Using the BTZ geometry we first investigate the case of free real scalar field and then show a possible way to calculate the entropy of the interacting scalar field. Next, we investigate the Maxwell field system. We exactly solve the wave equation and calculate the analytic value of the generalized gravitational entropy. We also use the Einstein equation to find the effect of backreaction of the Maxwell field on the area of horizon. The associated modified area law is consistent with the generalized gravitational entropy.

Wung-Hong Huang

2014-11-11T23:59:59.000Z

82

Golden Field Office  

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

Department of Energy Department of Energy Golden Field Office 1617 Cole Boulevard Golden, Colorado 80401-3393 FINDING OF NO SIGNIFICANT IMPACT UNIVERSITY OF MAINE'S DEEPWATER OFFSHORE FLOATING WIND TURBINE TESTING AND DEMONSTRATION PROJECT - CASTINE DOE/EA-1792-S1 AGENCY: U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) has completed a Supplemental Environmental Assessment (Supplemental EA) DOE/EA-1792-S1 for the University of Maine's (UMaine) Deepwater Offshore Floating Wind Turbine Testing and Demonstration Project - Castine. DOE prepared the Supplemental EA to evaluate the potential environmental impacts of

83

National High Magnetic Field Laboratory - Visualizing Field Lines...  

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

Now You See It: Visualizing Field Lines Try This At Home The magnetic field is the area around the magnet where the magnetic forces act. Actually, magnets are made up of many, many...

84

National High Magnetic Field Laboratory - Drawing Field Lines...  

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

A Portrait of Magnetism: Drawing Field Lines Try This At Home Magnets have two poles; the field lines spread out from the north pole and circle back around to the south pole. In...

85

Efficient thermal field computation in phase-field models  

Science Journals Connector (OSTI)

We solve the phase-field equations in two dimensions to simulate crystal growth in the low undercooling regime. The novelty is the use of a fast solver for the free space heat equation to compute the thermal field. This solver is based on the efficient ... Keywords: Crystal growth, Dendritic solidification, Diffusion equation, Fast solvers, Integral representation, Phase-field, Unbounded domain

Jing-Rebecca Li; Donna Calhoun; Lucien Brush

2009-12-01T23:59:59.000Z

86

Athletic Fields and Water Conservation  

E-Print Network (OSTI)

Following an 18-step procedure for performing an irrigation audit will help athletic field managers conserve water while maintaining a pleasing facility for recreational use. To perform the audit correctly, a field manager must determine the answers...

Taylor, Gene R.; White, Richard; Abernathy, Scott; Smith, David

1999-12-10T23:59:59.000Z

87

Golden Field Office Reading Room  

Office of Energy Efficiency and Renewable Energy (EERE)

The Golden Field Office was designated a Department of Energy (DOE) field office in December 1992 to support the development and commercialization of renewable energy and energy-efficient...

88

RESULTS OF FIELD TESTING DOE  

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

of Energy facility located within Naval Petroleum Reserve No. 3 (NPR-3), also known as Teapot Dome Oil Field, about 35 miles north of Casper, Wyoming. Teapot Dome Field, Natrona...

89

Diamond-graphite field emitters  

DOE Patents (OSTI)

A field emission electron emitter comprising an electrode of diamond and a conductive carbon, e.g., graphite, is provided.

Valone, Steven M. (Santa Fe, NM)

1997-01-01T23:59:59.000Z

90

Low field magnetic resonance imaging  

DOE Patents (OSTI)

A method and system of magnetic resonance imaging does not need a large homogenous field to truncate a gradient field. Spatial information is encoded into the spin magnetization by allowing the magnetization to evolve in a non-truncated gradient field and inducing a set of 180 degree rotations prior to signal acquisition.

Pines, Alexander (Berkeley, CA); Sakellariou, Dimitrios (Billancourt, FR); Meriles, Carlos A. (Fort Lee, NJ); Trabesinger, Andreas H. (London, GB)

2010-07-13T23:59:59.000Z

91

Magnetic-field-dosimetry system  

DOE Patents (OSTI)

A device is provided for measuring the magnetic field dose and peak field exposure. The device includes three Hall-effect sensors all perpendicular to each other, sensing the three dimensional magnetic field and associated electronics for data storage, calculating, retrieving and display.

Lemon, D.K.; Skorpik, J.R.; Eick, J.L.

1981-01-21T23:59:59.000Z

92

Cryptography in Quadratic Function Fields  

Science Journals Connector (OSTI)

We describe several cryptographic schemes in quadratic function fields of odd characteristic. In both the real and the imaginary representation of such a field, we present a Diffie-Hellman-like key exchange protocol as well as a public-key cryptosystem ... Keywords: Diffie-Hellman key exchange protocol, ElGamal signature scheme, discrete logarithm, public key cryptosystem, quadratic function field

R. Scheidler

2001-04-01T23:59:59.000Z

93

Golden Field Office  

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

1617 Cole Boulevard Golden , Colorado 80401-3393 DOE/EA-1791 FINDING OF NO SIGNIFICANT IMPACT UNIVERSITY OF MINNESOTA WIND ENERGY RESEARCH CONSORTIllM PROJECT AGENCY: U.S. Department of Energy, Golden Field Office ACTION : Finding of No Significant Impact (FONSI) SUMMARY: The U. S. Department of Energy (DOE) is proposing to authorize the expenditure of Federal funding by the University of Minnesota to design, permit, and construct a wind turbine research facility I. This funding has been appropriated under the American Recovery and Reinvestment Act of2009. The University would use the funding to install a wind turbine research facility at its University of Minnesota Outreach Research and Education (UMore) Park in Rosemount, Minnesota. The proposed research facility would consist of a 2.5-megawatt-

94

Golden Field Office  

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

FINDING OF NO SIGNIFICANT IMPACT FINDING OF NO SIGNIFICANT IMPACT MONARCH WARREN COUNTY WIND TURBINE PROJECT LENOX TOWNSIDP, WARREN COUNTY, IL AGENCY: U.S. Department of Energy (DOE), Golden Field Office ACTION: Finding orNo Significant Impact (FONS!) DOEIEA-JSOO SUMMARY: The U.S. Department of Energy (DOE) provided Federal funding appropriated under the American Reinvestment and Recovery Act 0(2009 to the Illinois Department ofComrnerce and Econom ic Opportunity (DeEO) under the State Energy Program (SEP). DeEO proposes to provide approximately $5 million of its SEP funds to Monarch Wind Power (MWP) for the Monarch Warren County Wind Turbine Project (MWTP). DOE's Proposed Action is to authorize the expenditure of Federal funding under State Energy Program to design, permit, and construct

95

ARM - Field Campaigns  

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

alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie alpacas clouds-anvil german-scene instrumentfield pye-night racoro-inst rhubc-layout snowy-site twpice-ship walter-annemarie How Do I Propose a Campaign? First, review the guidelines for submitting proposals. Next, submit a preproposal; a short summary of the proposed campaign. Wait for a response from the Infrastructure Management Board (IMB) and/or ARM Science Board. A full proposal or science plan, may be requested. Decision is made-now what is expected? ARM Climate Research Facility users regularly conduct field campaigns to augment routine data acquisitions and to test and validate new instruments. Announcements 13 Dec 2013 Now accepting proposals for use of an AMF, AAF, or augment observations at one of our fixed sites. Smaller campaigns in FY2014 and FY2015 can also be

96

Chameleon Field Theories  

E-Print Network (OSTI)

Chameleons are light scalar fields with remarkable properties. Through the interplay of self-interactions and coupling to matter, chameleon particles have a mass that depends on the ambient matter density. The manifestation of the fifth force mediated by chameleons therefore depends sensitively on their environment, which makes for a rich phenomenology. In this article, we review two recent results on chameleon phenomenology. The first result a pair of no-go theorems limiting the cosmological impact of chameleons and their generalizations: i) the range of the chameleon force at cosmological density today can be at most ~Mpc; ii) the conformal factor relating Einstein- and Jordan-frame scale factors is essentially constant over the last Hubble time. These theorems imply that chameleons have negligible effect on the linear growth of structure, and cannot account for the observed cosmic acceleration except as some form of dark energy. The second result pertains to the quantum stability of chameleon theories. We ...

Khoury, Justin

2013-01-01T23:59:59.000Z

97

Golden Field Office  

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

80401 -3393 DOEIEA-1818 80401 -3393 DOEIEA-1818 FINDING OF NO SIGNIFICANT IMPACT PETTISVILLE WIND ENERGY PROJECT AGENCY: U.S . Department of Energy, Golden Field Office ACTION: Finding of No Significant Impact (FONSI) SUMMARY: The U.S. Department of Energy (DOE) provided Federal funding to the Ohio Department of Development (0000) under the State Energy Program (SEP). 0000 proposes to provide $1 ,225 ,000 of its SEP funds to the Pettisvil Ie Local Schools (Pettisville) for the Pettisville Local Schools Wind Energy Project (Wind Energy Project). DOE' s Proposed Action is to authorize the expenditure of Federal funding under State Energy Program to design, permit, and construct the Pettisville Wind Energy Project, a 750-kilowatt wind turbine at the Pettisville Pre-Kindergarten through Twelfth Grade School located at

98

Chiral-field microwave antennas (Chiral microwave near fields for far-field radiation)  

E-Print Network (OSTI)

In a single-element structure we obtain a radiation pattern with a squint due to chiral microwave near fields originated from a magnetostatic-mode ferrite disk. At the magnetostatic resonances, one has strong subwavelength localization of energy of microwave radiation. Magnetostatic oscillations in a thin ferrite disk are characterized by unique topological properties: the Poynting-vector vortices and the field helicity. The chiral-topology near fields allow obtaining unique phase structure distribution for far-field microwave radiation.

Kamenetskii, E O; Shavit, R

2015-01-01T23:59:59.000Z

99

Whistler Modes with Wave Magnetic Fields Exceeding the Ambient Field  

Science Journals Connector (OSTI)

Whistler-mode wave packets with fields exceeding the ambient dc magnetic field have been excited in a large, high electron-beta plasma. The waves are induced with a loop antenna with dipole moment either along or opposite to the dc field. In the latter case the excited wave packets have the topology of a spheromak but are propagating in the whistler mode along and opposite to the dc magnetic field. Field-reversed configurations with net zero helicity have also been produced. The electron magnetohydrodynamics fields are force free, have wave energy density exceeding the particle energy density, and propagate stably at subelectron thermal velocities through a nearly uniform stationary ion density background.

R. L. Stenzel; J. M. Urrutia; K. D. Strohmaier

2006-03-10T23:59:59.000Z

100

Field Evaluation of Windows  

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

Evaluation of Windows Evaluation of Windows Last Updated: 10/20/2009 Various tools can be used to evaluate windows in the field. Unless a new window still has the NFRC label attached to it, it is nearly impossible to determine by sight what the thermal and optical performance of a window is. These tools can provide information, such as low-e coating, gap width and gas fill, that can be used to approximate the performance of a window. Solar gain and Low-e detector This device can be used to determine if a low-e coating is present in the window, what type of coating it is, and where it is located. The type of low-e coating will indicate the amount of solar gain that is admitted through the coating. Readings can be "low", "medium" or "high". The device will also indicate on which glass surface the low-e coating is in relation to the position of the device. Limitations: Only works on glass of 1/8" (3 mm) or thinner. Cost: around $350 from EDTM.com

Note: This page contains sample records for the topic "abu safah field" 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

Field Sampling | 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 » Field Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Sampling Details Activities (0) Areas (0) Regions (0) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Field Sampling Parent Exploration Technique: Field Techniques Information Provided by Technique Lithology: Rock samples are used to define lithology. Field and lab analyses can be used to measure the chemical and isotopic constituents of rock samples. Stratigraphic/Structural: 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.

102

Steam Field | Open Energy Information  

Open Energy Info (EERE)

Field Field Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Sanyal Temperature Classification: Steam Field Dictionary.png Steam Field: No definition has been provided for this term. Add a Definition Sanyal Temp Classification This temperature scheme was developed by Sanyal in 2005 at the request of DOE and GEA, as reported in Classification of Geothermal Systems: A Possible Scheme. Extremely Low Temperature Very Low Temperature Low Temperature Moderate Temperature High Temperature Ultra High Temperature Steam Field Steam field reservoirs are special cases where the fluid is predominantly found in a gas phase between 230°C to 240°C. "This special class of resource needs to be recognized, its uniqueness being the remarkably consistent initial temperature and pressure

103

Pair production in inhomogeneous fields  

SciTech Connect

We employ the recently developed worldline numerics, which combines string-inspired field theory methods with Monte Carlo techniques, to develop an algorithm for the computation of pair-production rates in scalar QED for inhomogeneous background fields. We test the algorithm with the classic Sauter potential, for which we compute the local production rate for the first time. Furthermore, we study the production rate for a superposition of a constant E field and a spatially oscillating field for various oscillation frequencies. Our results reveal that the approximation by a local derivative expansion already fails for frequencies small compared to the electron-mass scale, whereas for strongly oscillating fields a derivative expansion for the averaged field represents an acceptable approximation. The worldline picture makes the nonlocal nature of pair production transparent and facilitates a profound understanding of this important quantum phenomenon.

Gies, Holger; Klingmueller, Klaus [Institut fuer theoretische Physik, Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany)

2005-09-15T23:59:59.000Z

104

Pair production in inhomogeneous fields  

E-Print Network (OSTI)

We employ the recently developed worldline numerics, which combines string-inspired field theory methods with Monte-Carlo techniques, to develop an algorithm for the computation of pair-production rates in scalar QED for inhomogeneous background fields. We test the algorithm with the classic Sauter potential, for which we compute the local production rate for the first time. Furthermore, we study the production rate for a superposition of a constant E field and a spatially oscillating field for various oscillation frequencies. Our results reveal that the approximation by a local derivative expansion fails already for frequencies small compared to the electron mass scale, whereas for strongly oscillating fields a derivative expansion for the averaged field represents an acceptable approximation. The worldline picture makes the nonlocal nature of pair production transparent and facilitates a profound understanding of this important quantum phenomenon.

Holger Gies; Klaus Klingmuller

2005-05-12T23:59:59.000Z

105

Torsion and the Electromagnetic Field  

E-Print Network (OSTI)

In the framework of the teleparallel equivalent of general relativity, we study the dynamics of a gravitationally coupled electromagnetic field. It is shown that the electromagnetic field is able not only to couple to torsion, but also, through its energy-momentum tensor, to produce torsion. Furthermore, it is shown that the coupling of the electromagnetic field with torsion preserves the local gauge invariance of Maxwell's theory.

V. C. de Andrade; J. G. Pereira

1999-01-11T23:59:59.000Z

106

Noncommutivity and Scalar Field Cosmology  

E-Print Network (OSTI)

In this work we extend and apply a previous proposal to study noncommutative cosmology to the FRW cosmological background coupled to a scalar field, this is done in classical and quantum scenarios. In both cases noncommutativity is introduced in the gravitational field as well as in the scalar field through a deformation of minisuperspace and are able to find exact solutions. Finally, the effects of noncommutativity on the classical evolution are analyzed.

W. Guzmn; M. Sabido; J. Socorro

2007-12-10T23:59:59.000Z

107

Quantization of Spin-2 Fields  

Science Journals Connector (OSTI)

A massive spin-2 field has been quantized using Schwinger's action principle. Lorentz invariance and physical positive-definiteness requirements have been verified.

Shau-jin Chang

1966-08-26T23:59:59.000Z

108

Quantum fields in curved spacetime  

E-Print Network (OSTI)

We review the theory of quantum fields propagating in an arbitrary, classical, globally hyperbolic spacetime. Our review emphasizes the conceptual issues arising in the formulation of the theory and presents known results in a mathematically precise way. Particular attention is paid to the distributional nature of quantum fields, to their local and covariant character, and to microlocal spectrum conditions satisfied by physically reasonable states. We review the Unruh and Hawking effects for free fields, as well as the behavior of free fields in deSitter spacetime and FLRW spacetimes with an exponential phase of expansion. We review how nonlinear observables of a free field, such as the stress-energy tensor, are defined, as well as time-ordered-products. The "renormalization ambiguities" involved in the definition of time-ordered products are fully characterized. Interacting fields are then perturbatively constructed. Our main focus is on the theory of a scalar field, but a brief discussion of gauge fields is included. We conclude with a brief discussion of a possible approach towards a nonperturbative formulation of quantum field theory in curved spacetime and some remarks on the formulation of quantum gravity.

Stefan Hollands; Robert M. Wald

2014-06-10T23:59:59.000Z

109

field emission electron microprobe | EMSL  

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

field emission electron microprobe Leads No leads are available at this time. Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. Abstract: As a...

110

EMSL - field emission electron microprobe  

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

field-emission-electron-microprobe en Magnesium behavior and structural defects in Mg+ ion implanted silicon carbide. http:www.emsl.pnl.govemslwebpublications...

111

Electrochemical formation of field emitters  

DOE Patents (OSTI)

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area.

Bernhardt, Anthony F. (Berkeley, CA)

1999-01-01T23:59:59.000Z

112

National High Magnetic Field Laboratory: Superconductors  

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

opposes the magnetic field generating the current. In a perfect diamagnet, the magnetic field lines produced exactly mirror those of the changing magnetic field that induce them,...

113

Electromagnetic field with induced massive term: Case with scalar field  

E-Print Network (OSTI)

We consider an interacting system of massless scalar and electromagnetic field, with the Lagrangian explicitly depending on the electromagnetic potentials, i.e., interaction with broken gauge invariance. The Lagrangian for interaction is chosen in such a way that the electromagnetic field equation acquires an additional term, which in some cases is proportional to the vector potential of the electromagnetic field. This equation can be interpreted as the equation of motion of photon with induced nonzero rest-mass. This system of interacting fields is considered within the scope of Bianchi type-I (BI) cosmological model. It is shown that, as a result of interaction the electromagnetic field vanishes at $t \\to \\infty$ and the isotropization process of the expansion takes place.

Yu. P. Rybakov; G. N. Shikin; Yu. A. Popov; Bijan Saha

2010-04-21T23:59:59.000Z

114

Electromagnetic field with induced massive term: Case with spinor field  

E-Print Network (OSTI)

We consider an interacting system of spinor and electromagnetic field, explicitly depending on the electromagnetic potentials, i.e., interaction with broken gauge invariance. The Lagrangian for interaction is chosen in such a way that the electromagnetic field equation acquires an additional term, which in some cases is proportional to the vector potential of the electromagnetic field. This equation can be interpreted as the equation of motion of photon with induced non-trivial rest-mass. This system of interacting spinor and scalar fields is considered within the scope of Bianchi type-I (BI) cosmological model. It is shown that, as a result of interaction the electromagnetic field vanishes at $t \\to \\infty$ and the isotropization process of the expansion takes place.

Yu. P. Rybakov; G. N. Shikin; Yu. A. Popov; Bijan Saha

2010-08-12T23:59:59.000Z

115

Field observations and lessons learned  

SciTech Connect

This presentation outlines observations and lessons learned from the Megaports program. It provides: (1) details of field and technical observations collected during LANL field activities at ports around the world and details of observations collected during radiation detections system testing at Los Alamos National Laboratory; (2) provides suggestions for improvement and efficiency; and (3) discusses possible program execution changes for more effective operations.

Nielsen, Joh B [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

116

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.

117

Plasma Production via Field Ionization  

SciTech Connect

Plasma production via field ionization occurs when an incoming particle beam is sufficiently dense that the electric field associated with the beam ionizes a neutral vapor or gas. Experiments conducted at the Stanford Linear Accelerator Center explore the threshold conditions necessary to induce field ionization by an electron beam in a neutral lithium vapor. By independently varying the transverse beam size, number of electrons per bunch or bunch length, the radial component of the electric field is controlled to be above or below the threshold for field ionization. Additional experiments ionized neutral xenon and neutral nitric oxide by varying the incoming beam's bunch length. A self-ionized plasma is an essential step for the viability of plasma-based accelerators for future high-energy experiments.

O'Connell, C.L.; Barnes, C.D.; Decker, F.; Hogan, M.J.; Iverson, R.; Krejcik, P.; Siemann, R.; Walz, D.R.; /SLAC; Clayton, C.E.; Huang, C.; Johnson, D.K.; Joshi, C.; Lu,; Marsh, K.A.; Mori, W.; Zhou, M.; /UCLA; Deng, S.; Katsouleas, T.; Muggli, P.; Oz, E.; /Southern California U.

2007-01-02T23:59:59.000Z

118

Compact orthogonal NMR field sensor  

DOE Patents (OSTI)

A Compact Orthogonal Field Sensor for emitting two orthogonal electro-magnetic fields in a common space. More particularly, a replacement inductor for existing NMR (Nuclear Magnetic Resonance) sensors to allow for NMR imaging. The Compact Orthogonal Field Sensor has a conductive coil and a central conductor electrically connected in series. The central conductor is at least partially surrounded by the coil. The coil and central conductor are electrically or electro-magnetically connected to a device having a means for producing or inducing a current through the coil and central conductor. The Compact Orthogonal Field Sensor can be used in NMR imaging applications to determine the position and the associated NMR spectrum of a sample within the electro-magnetic field of the central conductor.

Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL)

2009-02-03T23:59:59.000Z

119

Abandoned oil fields in Kansas and Nebraska  

SciTech Connect

Data on approximately 400 abandoned oil fields in Kansas and 90 abandoned oil fields in Nebraska are presented. The following information is obtained on each field: county; DOE field code; field name; AAPG geologic province code; discovery date; year of last production; discovery well operator; proven acreage; formation thickness; depth of field; API gravity; calendar year; yearly field oil production; yearly field gas production; cumulative oil production; cumulative gas production; number abandoned fields in county; cumulative production of oil from fields; and cumulative production of gas from fields. (DMC)

Not Available

1982-12-01T23:59:59.000Z

120

Reverse?field reciprocity for conducting specimens in magnetic fields  

Science Journals Connector (OSTI)

A new static?electromagnetic reciprocity principle is presented extending ordinary resistive reciprocity to the case of nonzero magnetic fields by requiring the magnetic field to be reversed when the reciprocal measurement is made. The principle is supported by measurements on various types of specimens including those which exhibit the quantum?Hall effect. A derivation using elementary electromagnetic theory shows that the principle will hold provided only that the specimen is electrically linear (Ohmic) and that the Onsager form for the conductivity tensor applies throughout. The principle has important implications for electrical measurements on semiconductors in applied?magnetic fields.

H. H. Sample; W. J. Bruno; S. B. Sample; E. K. Sichel

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

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

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2003.04.02 - 2003.09.02 Lead Scientist : Marc Fischer For data sets, see below. Description Ecosystem-atmosphere exchange of carbon, water, and energy varies with climate, soil, and land management, in ways 1) that influence the CO2 flux and planetary boundary layer CO2 concentration in ARM CART and 2) that we can model and predict. This activity repeated portable flux system measurements that we performed in spring 2002, by continuing measurements of the spatial heterogeneity of carbon, water, and energy fluxes in fields surrounding the ARM SGP Central Facility (CF).

122

Quantum Field and Cosmic Field-Finite Geometrical Field Theory of Matter Motion Part Three  

E-Print Network (OSTI)

This research establishes an operational measurement way to express the quantum field theory in a geometrical form. In four-dimensional spacetime continuum, the orthogonal rotation is defined. It forms two sets of equations: one set is geometrical equations, another set is the motion equations. The Lorentz transformation can be directly derived from the geometrical equations, and the proper time of general relativity is well expressed by time displacement field. By the motion equations, the typical time displacement field of matter motion is discussed. The research shows that the quantum field theory can be established based on the concept of orthogonal rotation. On this sense, the quantum matter motion in physics is viewed as the orthogonal rotation of spacetime continuum. In this paper, it shows that there are three typical quantum solutions. One is particle-like solution, one is generation-type solution, and one is pure wave type solution. For each typical solution, the force fields are different. Many fea...

Xiao, J

2005-01-01T23:59:59.000Z

123

High field gradient particle accelerator  

DOE Patents (OSTI)

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications is disclosed. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle. 10 figs.

Nation, J.A.; Greenwald, S.

1989-05-30T23:59:59.000Z

124

High field gradient particle accelerator  

DOE Patents (OSTI)

A high electric field gradient electron accelerator utilizing short duration, microwave radiation, and capable of operating at high field gradients for high energy physics applications or at reduced electric field gradients for high average current intermediate energy accelerator applications. Particles are accelerated in a smooth bore, periodic undulating waveguide, wherein the period is so selected that the particles slip an integral number of cycles of the r.f. wave every period of the structure. This phase step of the particles produces substantially continuous acceleration in a traveling wave without transverse magnetic or other guide means for the particle.

Nation, John A. (Ithaca, NY); Greenwald, Shlomo (Haifa, IL)

1989-01-01T23:59:59.000Z

125

Generation of Gaussian Density Fields  

E-Print Network (OSTI)

This document describes analytical and numerical techniques for the generation of Gaussian density fields, which represent cosmological density perturbations. The mathematical techniques involved in the generation of density harmonics in k-space, the filtering of the density fields, and the normalization of the power spectrum to the measured temperature fluctuations of the Cosmic Microwave Background, are presented in details. These techniques are well-known amongst experts, but the current literature lacks a formal description. I hope that this technical report will prove useful to new researchers moving into this field, sparing them the task of reinventing the wheel.

Hugo Martel

2005-06-22T23:59:59.000Z

126

Freedom Field | Open Energy Information  

Open Energy Info (EERE)

Field Field Jump to: navigation, search Logo: Freedom Field Name Freedom Field Address 3333 Kishwaukee Street Place Rockford, Illinois Zip 61109 Year founded 2009 Phone number 815-387-7570 Coordinates 42.2243753°, -89.0869292° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.2243753,"lon":-89.0869292,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

127

The Sun's global magnetic field  

Science Journals Connector (OSTI)

...the plasma in the Sun's atmosphere...representation of the Sun's large-scale...high density and temperature contrast between...the density and temperature distributions found in the global...magnetic fields on the Sun and other stars...

2012-01-01T23:59:59.000Z

128

Field ionization from carbon nanofibers  

E-Print Network (OSTI)

The Micro Gas Analyzer project aims to develop power-efficient, high resolution, high sensitivity, portable and real-time gas sensors. We developed a field ionizer array based on gated CNTs. Arrays of CNTs are used because ...

Adeoti, Bosun J

2008-01-01T23:59:59.000Z

129

Neutron in Strong Magnetic Fields  

E-Print Network (OSTI)

Relativistic world-line Hamiltonian for strongly interacting 3q systems in magnetic field is derived from the path integral for the corresponding Green's function. The neutral baryon Hamiltonian in magnetic field obeys the pseudomomentum conservation and allows a factorization of the c.m. and internal motion. The resulting expression for the baryon mass in magnetic field is written explicitly with the account of hyperfine, OPE and OGE (color Coulomb) interaction. The neutron mass is fast decreasing with magnetic field, losing 1/2 of its value at eB~0.25 GeV^2 and is nearly zero at eB~0.5 GeV^2. Possible physical consequences of the calculated mass trajectory of the neutron, M_n(B), are presented and discussed.

M. A. Andreichikov; B. O. Kerbikov; V. D. Orlovsky; Yu. A. Simonov

2013-12-08T23:59:59.000Z

130

Carlsbad Field Office - Fact Sheet  

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

the nation's nuclear waste disposal problem Carlsbad Field Office The U.S. Department of Energy (DOE) created the Carlsbad Area Office in late 1993 to lead the nation's transuranic...

131

Deep Vadose Zone Field Activities  

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

HANFORD ADVISORY BOARD, RAP March 6, 2013 Presented by: John Morse DEEP VADOSE ZONE ACTIVITIES Page 2 Deep Vadose Zone Areas Page 3 Deep Vadose Zone Field Activities FY 2014...

132

ROSAT wide field camera mirrors  

Science Journals Connector (OSTI)

The ROSAT wide field camera (WFC) is an XUV telescope operating in the 12250-eV energy band. The mirror system utilizes Wolter-Schwarzschild type I (WS I) grazing incidence optics...

Willingale, R

1988-01-01T23:59:59.000Z

133

Modulation Field Induces Universe Rotation  

E-Print Network (OSTI)

In this paper, we consider a time dependent module field on spacetime extension without modifying commutative relation on noncommutative quantum plane. The significant idea is that $Lorentz$ symmetry is conserved in module and unmodule coordinate. We focus on the redefinition of spacetime structure without considering noncommutative bosonic gas in deforming the product between fields. Which the null vector is a vector on orthogonal $D$ dimensional $Hilbert$ spacetime. In $Riemann$ geometry, the equation of motion is deformed from an induced rotation. Particle field survives on the state composed by two theoretical assumed $null$ vectors, one is commutative, another is anticommutative. In the point of view, neutrino and photon mass are produced by its shift, the rotated effect generates a horizon in redefining particle field.

Chien Yu Chen

2008-06-30T23:59:59.000Z

134

Field Mapping | Open Energy Information  

Open Energy Info (EERE)

Field Mapping Field Mapping Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Field Mapping Details Activities (59) Areas (35) Regions (6) NEPA(0) Exploration Technique Information Exploration Group: Field Techniques Exploration Sub Group: Data Collection and Mapping Parent Exploration Technique: Data Collection and Mapping Information Provided by Technique Lithology: Map surface geology and hydrothermal alteration. Stratigraphic/Structural: Map fault and fracture patterns, kinematic information. Hydrological: Map surface manifestations of geothermal systems. Thermal: Map surface temperature. Cost Information Low-End Estimate (USD): 400.0040,000 centUSD 0.4 kUSD 4.0e-4 MUSD 4.0e-7 TUSD / hour Median Estimate (USD): 600.0060,000 centUSD

135

Electrochemical formation of field emitters  

DOE Patents (OSTI)

Electrochemical formation of field emitters, particularly useful in the fabrication of flat panel displays is disclosed. The fabrication involves field emitting points in a gated field emitter structure. Metal field emitters are formed by electroplating and the shape of the formed emitter is controlled by the potential imposed on the gate as well as on a separate counter electrode. This allows sharp emitters to be formed in a more inexpensive and manufacturable process than vacuum deposition processes used at present. The fabrication process involves etching of the gate metal and the dielectric layer down to the resistor layer, and then electroplating the etched area and forming an electroplated emitter point in the etched area. 12 figs.

Bernhardt, A.F.

1999-03-16T23:59:59.000Z

136

Extreme field physics and QED  

E-Print Network (OSTI)

We give a brief overview of the most important QED effects that can be studied in the presence of extreme fields such as those expected at the Vulcan laser upgraded to a power of 10 Petawatts.

Thomas Heinzl; Anton Ilderton

2008-09-19T23:59:59.000Z

137

Diffeomorphism groups and anyon fields  

SciTech Connect

We make use of unitary representations of the group of diffeomorphisms of the plane to construct an explicit field theory of anyons. The resulting anyon fields satisfy q-commutators, where q is the well-known phase shift associated with a single counterclockwise exchange of a pair of anyons. Our method uses a realization of the braid group by means of paths in the plane, that transform naturally under diffeomorphisms of R{sup 2}.

Goldin, G.A. [Rutgers Univ., New Brunswick, NJ (United States); Sharp, D.H. [Los Alamos National Lab., NM (United States)

1995-09-01T23:59:59.000Z

138

Electromagnetic field and cosmic censorship  

E-Print Network (OSTI)

We construct a gedanken experiment in which an extremal Kerr black hole interacts with a test electromagnetic field. Using Teukolsky's solutions for electromagnetic perturbations in Kerr spacetime, and the conservation laws imposed by the energy momentum tensor of the electromagnetic field and the Killing vectors of the spacetime, we prove that this interaction cannot convert the black hole into a naked singularity, thus cosmic censorship conjecture is not violated in this case.

Koray Dzta?

2014-04-09T23:59:59.000Z

139

Optical sensor of magnetic fields  

DOE Patents (OSTI)

An optical magnetic field strength sensor for measuring the field strength of a magnetic field comprising a dilute magnetic semi-conductor probe having first and second ends, longitudinally positioned in the magnetic field for providing Faraday polarization rotation of light passing therethrough relative to the strength of the magnetic field. Light provided by a remote light source is propagated through an optical fiber coupler and a single optical fiber strand between the probe and the light source for providing a light path therebetween. A polarizer and an apparatus for rotating the polarization of the light is provided in the light path and a reflector is carried by the second end of the probe for reflecting the light back through the probe and thence through the polarizer to the optical coupler. A photo detector apparatus is operably connected to the optical coupler for detecting and measuring the intensity of the reflected light and comparing same to the light source intensity whereby the magnetic field strength may be calculated.

Butler, M.A.; Martin, S.J.

1986-03-25T23:59:59.000Z

140

Field Theory of Matter. IV  

Science Journals Connector (OSTI)

The relativistic dynamics of 0- and 1- mesons in the idealization of U3 symmetry is derived from the hypothesis that a compact group of transformations on fundamental fields induces a predominantly local and linear transformation of the phenomenological fields that are associated with particles. The physical picture of phenomenological fields as highly localized functions of fundamental fields implies that the interaction term of the phenomenological Lagrange function can have symmetry properties, expressed by invariance under the compact transformation group, that have no significance for the remainder of the Lagrange function, which describes the propagation of the physical excitations. It is verified that the meson interaction term derived by considering fundamental fermion fields is invariant under the parity-conserving group U6U6. The implied connection between the ??? and ??? coupling constants is well satisfied. There is a brief discussion of the dynamics of fermion-particle triplets, from which it is shown that the invariance of the similarly derived interaction term implies the mass degeneracy of the singlet and octuplet of 1- mesons, without relation to 0- masses. The triplets are also used to illustrate the derivation of gauge- and relativistically invariant electromagnetic properties. The mass degeneracy of the nine 1- mesons, and of nine 2+ mesons, can be inferred from the commutation properties of bilinear combinations of the fundamental field.

Julian Schwinger

1965-10-11T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Lucky Mound field: A new Mississippian Sherwood shoreline field  

SciTech Connect

Lucky Mound field produces oil and gas from the Sherwood interval of the Mississippian Mission Canyon Formation. Presently, eight wells are producing with development ongoing. Extensive coring, testing, logging, and petrographic evaluations throughout the field have allowed for detailed analysis of reservoir characteristics and paleoenvironmental interpretation. Sherwood shoreline fields typically produce from reservoir-quality packstones and grainstones trapped by a lateral facies changes into impermeable dolomite and anhydrite. At Lucky Mound, packstones, grainstones, and a productive dolomite facies all contribute to the producing interval. The productive dolomite facies is generally found in the upper portion of the Sherwood along the eastern margin of the field. Porosity as high as 22% and permeability values up to 16 md are present in the dolomite facies. These dolomites are the result of complete to partial replacement of micrite. In addition, the dolomitization process has enhanced intercrystalline and intraparticle porosity throughout the Sherwood interval. Pore types present include vuggy, intergranular, intraparticle, and intercrystalline. Pore occluding and replacive cements include fibrous calcite, prismatic calcite spar, baroque dolomite, anhydrite, celestite, pyrite, and chert. An understanding of carbonate depositional environments, diagenetic processes, Williston basin structural development, and Sherwood reservoir behavior is essential in the exploration for new Sherwood fields.

Fisher, R.W. (Balcron Oil, Billings, MT (United States)); Hendricks, M.L. (Hendricks and Associates, Inc., Denver, CO (United States))

1991-06-01T23:59:59.000Z

142

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

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

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2006.01.01 - 2006.12.31 Lead Scientist : Marc Fischer For data sets, see below. Description Accurate prediction of the regional responses of CO2 flux to changing climate, land use, and management requires models that are parameterized and tested against measurements made in multiple land cover types and over seasonal to inter-annual time scales. In an extension of our earlier work on crop systems, we investigated the effects of burning on the cycles of carbon, water, and energy in an example of grazed land of the Southern Great Plains. In collaboration with Dr. Herman Mayeux, of the USDA Grazing

143

Monoenergetic fast neutron reference fields: II. Field characterization  

Science Journals Connector (OSTI)

Monoenergetic neutron reference fields are required for the calibration of neutron detectors and dosemeters for various applications ranging from nuclear physics and nuclear data measurements to radiation protection. In a series of two separate publications the metrological aspects of the production and measurement of fast neutrons are reviewed. In the first part, requirements for the nuclear reactions used to produce neutron fields as well as methods for target characterization and the general layout of reference facilities were discussed. This second part focuses on the most important techniques for field characterization and includes the determination of the neutron fluence as well as the spectral neutron distribution and the determination of the fluence of contaminating photons. The measurements are usually carried out relative to reference cross sections which are reviewed in a separate contribution, but for certain conditions 'absolute' methods for neutron measurements can be used which are directly traceable to the international system of units (SI).

Ralf Nolte; David J Thomas

2011-01-01T23:59:59.000Z

144

ARM - Field Campaign - Precision Gas Sampling (PGS) Validation Field  

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

govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign govCampaignsPrecision Gas Sampling (PGS) Validation Field Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : Precision Gas Sampling (PGS) Validation Field Campaign 2004.04.15 - 2004.12.15 Lead Scientist : Marc Fischer For data sets, see below. Description Accurate prediction of the regional responses of CO2 flux to changing climate, land use, and management requires models that are parameterized and tested against measurements made in multiple land cover types and over seasonal to inter-annual time scales. Models predicting fluxes for un-irrigated agriculture were posed with the challenge of characterizing the onset and severity of plant water stress. We conducted a study that quantified the spatial heterogeneity and temporal variations in land

145

Electric field statistics in MHD turbulence  

E-Print Network (OSTI)

Electric field statistics in MHD turbulence Bernard Knaepen, Nicolas Denewet & Daniele Carati, ULB #12;Electric field statistics in MHD turbulence Outline Electric field in MHD? Particle acceleration Statistics of the electric & magnetic fields #12;Outline Electric field in MHD? Particle acceleration

Low, Robert

146

Magnetic field in a finite toroidal domain  

SciTech Connect

The magnetic field structure in a domain surrounded by a closed toroidal magnetic surface is analyzed. It is shown that ergodization of magnetic field lines is possible even in a regular field configuration (with nonvanishing toroidal component). A unified approach is used to describe magnetic fields with nested toroidal (possibly asymmetric) flux surfaces, magnetic islands, and ergodic field lines.

Ilgisonis, V. I.; Skovoroda, A. A., E-mail: skovorod@nfi.kiae.r [Russian Research Centre Kurchatov Institute (Russian Federation)

2010-05-15T23:59:59.000Z

147

SAFT-UT field experience  

SciTech Connect

This paper reports on a three-year program at the Battelle Pacific Northwest Laboratory to transfer the synthetic aperture focusing technique (SAFT) technology that was developed at the University of Michigan into the field. A brief overview is given of the program and the field system is described. The main portion of the paper is devoted to the experience of using the SAFT system in a third-party role to aid in resolving inspection inconsistencies between several different UT inservice inspections results for intergranular stress corrosion cracks (IGSCC) in boiling water reactor (BWR) piping. A new method of scanning using a modified tandem technique (called TSAFT) was also developed and successfully employed in the field. The SAFT images made cracks easy to identify and the TSAFT data were easy to interpret for depth sizing. However, the most significant fact about the system is that it did work very well under field conditions even though a number of improvements were identified as a result of each field trip. These improvements are discussed in the paper. 6 refs., 15 figs.

Doctor, S.R.; Crawford, S.L.; Hall, T.E.

1985-03-01T23:59:59.000Z

148

Topology of magnetars external field I. Axially symmetric fields  

Science Journals Connector (OSTI)

......Actually, their energy output in the 20-200...than their rotational energy losses. This, together...explaining in a simple and economical way most of the observed...analogous to that for the solar magnetic field (e...spectra exhibit a high-energy tail, superimposed to......

L. Pavan; R. Turolla; S. Zane; L. Nobili

2009-05-11T23:59:59.000Z

149

Field test of microemulsion flooding, Chateaurenard Field, France  

SciTech Connect

A pilot test of microemulsion flooding was conducted in a single five-spot pattern in the Chateaurenard field in France. The test had to accommodate a 40-mPa*s (40-cp) oil viscosity and a regional pressure gradient across the pattern. A very clear oil bank was observed, resulting in a substantial increase in oil production. 9 refs.

Putz, A.; Chevalier, J.P.; Stock, G.; Philippot, J.

1981-04-01T23:59:59.000Z

150

Primordial magnetic fields from self-ordering scalar fields  

E-Print Network (OSTI)

A symmetry-breaking phase transition in the early universe could have led to the formation of cosmic defects. Because these defects dynamically excite not only scalar and tensor type cosmological perturbations but also vector type ones, they may serve as a source of primordial magnetic fields. In this study, we calculate the time evolution and the spectrum of magnetic fields that are generated by a type of cosmic defects, called global textures, using the non-linear sigma (NLSM) model. Based on the standard cosmological perturbation theory, we show, both analytically and numerically, that a vector-mode relative velocity between photon and baryon fluids is induced by textures, which inevitably leads to the generation of magnetic fields over a wide range of scales. We find that the amplitude of the magnetic fields is given by $B\\sim{10^{-9}}{((1+z)/10^3)^{-2.5}}({v}/{m_{\\rm pl}})^2({k}/{\\rm Mpc^{-1}})^{3.5}/{\\sqrt{N}}$ Gauss in the radiation dominated era for $k\\lesssim 1$ Mpc$^{-1}$, with $v$ being the vacuum ...

Horiguchi, Kouichirou; Sekiguchi, Toyokazu; Sugiyama, Naoshi

2015-01-01T23:59:59.000Z

151

High Field Magnetic Resonance Facility  

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

HFMRF Overview HFMRF Overview Section 2-3-1 High Field Magnetic Resonance Facility The High Field Magnetic Resonance Facility (HFMRF) focuses a significant portion of its research on developing a fundamental, molecular-level understanding of biochemical and biological systems and their response to environmental effects. A secondary focus is materials science, including catalysis and chemical mechanisms and processes. Staff and science consultants within this facility offer expertise in the areas of structural biology, solid-state materials characterization, and magnetic resonance imaging (MRI) techniques. Research activities in the HFMRF include: * structure determination of large molecular assemblies such as protein-DNA (normal and damaged DNA) and protein-RNA complexes

152

Wide field of view telescope  

DOE Patents (OSTI)

A wide field of view telescope having two concave and two convex reflective surfaces, each with an aspheric surface contour, has a flat focal plane array. Each of the primary, secondary, tertiary, and quaternary reflective surfaces are rotationally symmetric about the optical axis. The combination of the reflective surfaces results in a wide field of view in the range of approximately 3.8.degree. to approximately 6.5.degree.. The length of the telescope along the optical axis is approximately equal to or less than the diameter of the largest of the reflective surfaces.

Ackermann, Mark R. (Albuquerque, NM); McGraw, John T. (Placitas, NM); Zimmer, Peter C. (Albuquerque, NM)

2008-01-15T23:59:59.000Z

153

A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak  

E-Print Network (OSTI)

A Taxonomy of Wireless Micro-Sensor Network Models Sameer Tilak ¡ , Nael B. Abu this emerging field to classify wireless micro-sensor networks accord- ing to different communication functions networks with differing requirements. We believe that a better understanding of micro-sensor network re

Abu-Ghazaleh, Nael B.

154

The Global Solar and Wind Atlas: a unique Global Spatial Data Infrastructure for all renewable energy  

E-Print Network (OSTI)

@masdar.ac.ae Nicolas Fichaux International Renewable Energy Agency - IRENA Abu Dhabi United Arab Emirates NFichaux in the field of solar and wind energy. The initiative will be expanded to encompass all renewable energies by 2015, and will be the largest information source on renewable energy potentials ever created. It has

Paris-Sud XI, Université de

155

Field's Point Wastewater Treatment Facility (Narragansett Bay...  

Open Energy Info (EERE)

Field's Point Wastewater Treatment Facility (Narragansett Bay Commission) Jump to: navigation, search Name Field's Point Wastewater Treatment Facility (Narragansett Bay Commission)...

156

Tropical rainforest biodiversity: field and  

E-Print Network (OSTI)

. The Udzungwas in particular, are one of the single, most important areas in Africa for biodiversity conservationTropical rainforest biodiversity: field and GIS tools for assessing, monitoring and mapping II with Tanzania National ParksTanzania National Parks andand Wildlife Conservation SocietyWildlife Conservation

157

Far-Field Optical Nanoscopy  

Science Journals Connector (OSTI)

...speed, sensitivity, and cost-efficiency are constantly...mathematically. Operating with oil, glycerol, and water-immersion...recent field-corrected oil-immersion lenses...Setting the current benchmark, these STED-4Pi...fluorophores encourages the exploration of this concept. Depleting...

Stefan W. Hell

2007-05-25T23:59:59.000Z

158

Marshall Field Annex 1897 -1920  

E-Print Network (OSTI)

until 1919. The library finally moved into the new space in 1920 and reopened in May 1921 with seven, creation, maintenance and endowment of a free public library." The John Crerar Library a brief historialMarshall Field Annex 1897 - 1920 CREATION--The John Crerar Library was first opened at the Marshall

He, Chuan

159

Quantum fields in toroidal topology  

SciTech Connect

The standard representation of c*-algebra is used to describe fields in compactified space-time dimensions characterized by topologies of the type {Gamma}{sub D}{sup d}=(S{sup 1}){sup d}xM{sup D-d}. The modular operator is generalized to introduce representations of isometry groups. The Poincare symmetry is analyzed and then we construct the modular representation by using linear transformations in the field modes, similar to the Bogoliubov transformation. This provides a mechanism for compactification of the Minkowski space-time, which follows as a generalization of the Fourier integral representation of the propagator at finite temperature. An important result is that the 2x2 representation of the real-time formalism is not needed. The end result on calculating observables is described as a condensate in the ground state. We initially analyze the free Klein-Gordon and Dirac fields, and then formulate non-abelian gauge theories in {Gamma}{sub D}{sup d}. Using the S-matrix, the decay of particles is calculated in order to show the effect of the compactification. - Highlights: > C*-algebra is used to describe fields in compactified space-time dimensions. > The space-time is characterized by toroidal topologies. > Representations of the Poincare group are studied by using the modular operator. > We derive non-abelian gauge theories in compactified regions of space-time. > We show the compactification effect in the decay of particles using the S-matrix.

Khanna, F.C., E-mail: fkhanna@ualberta.ca [Theoretical Physics Institute, University of Alberta, Edmonton, AB, T6G 2J1 (Canada); TRIUMF, Vancouver, BC, V6T 2A3 (Canada); Malbouisson, A.P.C., E-mail: adolfo@cbpf.br [Centro Brasileiro de Pesquisas Fisicas/MCT, 22290-180, Rio de Janeiro, RJ (Brazil); Malbouisson, J.M.C., E-mail: jmalboui@ufba.br [Instituto de Fisica, Universidade Federal da Bahia, 40210-340, Salvador, BA (Brazil); Santana, A.E., E-mail: asantana@unb.br [Theoretical Physics Institute, University of Alberta, Edmonton, AB, T6G 2J1 (Canada); Instituto de Fisica, International Center for Condensed Matter Physics, Universidade de Brasilia, 70910-900, Brasilia, DF (Brazil)

2011-10-15T23:59:59.000Z

160

Capillary Bridges in Electric Fields  

Science Journals Connector (OSTI)

Capillary Bridges in Electric Fields ... The separation d between the electrodes could be varied using a stepping motor with a nominal step width of 0.625 ?m. ... New York: NcGraw-Hill Co. 1950; Smythe, Static and Dynamic Electricity. ...

Anke Klingner; Juergen Buehrle; Frieder Mugele

2004-07-02T23:59:59.000Z

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


161

Quantum Field Theory in Graphene  

E-Print Network (OSTI)

This is a short non-technical introduction to applications of the Quantum Field Theory methods to graphene. We derive the Dirac model from the tight binding model and describe calculations of the polarization operator (conductivity). Later on, we use this quantity to describe the Quantum Hall Effect, light absorption by graphene, the Faraday effect, and the Casimir interaction.

I. V. Fialkovsky; D. V. Vassilevich

2011-11-13T23:59:59.000Z

162

Electric field divertor plasma pump  

DOE Patents (OSTI)

An electric field plasma pump includes a toroidal ring bias electrode (56) positioned near the divertor strike point of a poloidal divertor of a tokamak (20), or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix (40) of the poloidal divertor contacts the ring electrode (56), which then also acts as a divertor plate. A plenum (54) or other duct near the electrode (56) includes an entrance aperture open to receive electrically-driven plasma. The electrode (56) is insulated laterally with insulators (63,64), one of which (64) is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode (56) and a vacuum vessel wall (22), with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E.times.B/B.sup.2 drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable.

Schaffer, Michael J. (San Diego, CA)

1994-01-01T23:59:59.000Z

163

Free energies in magnetic fields  

Science Journals Connector (OSTI)

The partition function is calculated exactly at low temperatures and dimensionality one in the presence of a magnetic field for ferromagnetic systems of n-component unit vectors with nearest-neighbor interactions. For n=2 the free energy is proportional to the lowest eigenvalue of Mathieu's equation. Asymptotic solutions for n=3 are also given.

Jorge V. Jos

1976-09-01T23:59:59.000Z

164

FIELD RELIABILITY OF ELECTRONIC SYSTEMS  

E-Print Network (OSTI)

: ELECTRONIC EQUIPMENT; FAILURES; RELIABILITY; RISK ANALYSIS; SYSTEM ANALYSIS UDC: 621.38.004.64 ISBN 87 Predicted and Observed Reliability 16 3.3. Source 3 16 3.3.1. Description (Reactor Gamma Monitor) 16 3I Ww i 1 i FIELD RELIABILITY OF ELECTRONIC SYSTEMS wcwotoias R I S 0 - M - 2 4 1 8 An analytical

165

PHOTOCHEMISTRY IN THE MICROWAVE FIELD  

E-Print Network (OSTI)

. The objective of microwave-assisted photochemistry is frequently, but not irreplaceably, connected. EDLs Hg-EDLs: I2- and P-EDLs S-EDL vs. solar radiation flux Literature: 1. P. Kl�n V. C�rkva, Microwave in the MW field. � No evidence for nonthermal microwave effects was observed. Outlook � MW-assisted

Cirkva, Vladimir

166

Invisibility & Control of Electromagnetic fields  

E-Print Network (OSTI)

Invisibility & Control of Electromagnetic fields JB Pendry The Blackett Laboratory, Imperial to make something invisible Science 312 1780-2 (2006), JB Pendry, D Schurig, and DR Smith 1. define a region that is to be invisible 2. surround it with an optical medium that can bend light 3. design

van Tiggelen, Bart

167

Performance limits of heliostat fields  

SciTech Connect

Geometric and thermodynamic arguments are used to derive upper limits on the performance of a solar energy collection system, consisting of an axisymmetric heliostat field, a solar tower, secondary optics and a black receiver. Performance limits on collected power, concentration, and work output are presented. Performance of tower systems with several secondary optics options is compared: tower-top Compound Parabolic Concentrator (CPC), Tailored Edge-Ray Concentrator (TERC) approximated by a cone, and Cassegrainian with ground-level CPC or Compound Elliptic Concentrator (CEC). Optimized ray tracing is used to generate the design parameters of the secondary concentrators that yield the highest optical efficiency. The results show that the tower-top Cone provides the best performance regarding both concentration and efficiency, except for very large fields. The Cassegrainian designs come in second, but become equal and even better than the Cone for large fields. The results for the Cassegrainian are sensitive to the value of the reflectivity, due to the additional reflections incurred. The choice of a CEC is better than a CPC for the terminal concentration in a Cassegrainian system, but the difference is small. The suitability of the different design options for high-temperature solar applications is discussed. The recommendations regarding optical configuration depend on field size, as well as on application-specific constraints.

Kribus, A.; Krupkin, V.; Yogev, A. [Weizmann Inst. of Science, Rehovot (Israel). Environmental Sciences and Energy Research Dept.; Spirkl, W. [Ludwig-Maximilians-Univ. Muenchen (Germany). Sektion Physik

1998-11-01T23:59:59.000Z

168

Sedimentation Field Flow Fractionation: Applications  

Science Journals Connector (OSTI)

...FIELD-FLOW FRACTIONATION OF ALKALI-LIBERATED NUCLEAR POLYHEDROSIS-VIRUS FROM GYPSY-MOTH...FRACTIONATION TO RADIOACTIVE-WASTE DISPOSAL, NUCLEAR TECHNOLOGY 51 : 147 ( 1980 ). SOBER...perThe SFFF separation in Fig. 9a was ic dispersant moarbitrarily concluded shortly after...

J. J. Kirkland; W. W. Yau

1982-10-08T23:59:59.000Z

169

Electric field divertor plasma pump  

DOE Patents (OSTI)

An electric field plasma pump includes a toroidal ring bias electrode positioned near the divertor strike point of a poloidal divertor of a tokamak, or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix of the poloidal divertor contacts the ring electrode, which then also acts as a divertor plate. A plenum or other duct near the electrode includes an entrance aperture open to receive electrically-driven plasma. The electrode is insulated laterally with insulators, one of which is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode and a vacuum vessel wall, with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E [times] B/B[sup 2] drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable. 11 figs.

Schaffer, M.J.

1994-10-04T23:59:59.000Z

170

Methods for evaluating spatial fields  

E-Print Network (OSTI)

other areas Other parameters (e.g., wind, cloud) Regional climate forecasts Satellite precipitation structure and features WRF model Stage II radar STAR Seminar Oct 2010 #12;5 Spatial fields have many flavors on the local circulation patterns." STAR Seminar Oct 2010 #12;Rife et al. 2004 STAR Seminar Oct 2010 #12

Kuligowski, Bob

171

Separation of magnetic field lines  

SciTech Connect

The field lines of magnetic fields that depend on three spatial coordinates are shown to have a fundamentally different behavior from those that depend on two coordinates. Unlike two-coordinate cases, a flux tube in a magnetic field that depends on all three spatial coordinates that has a circular cross section at one location along the tube characteristically has a highly distorted cross section at other locations. In an ideal evolution of a magnetic field, the current densities typically increase. Crudely stated, if the current densities increase by a factor {sigma}, the ratio of the long to the short distance across a cross section of a flux tube characteristically increases by e{sup 2{sigma}}, and the ratio of the longer distance to the initial radius increases as e{sup {sigma}}. Electron inertia prevents a plasma from isolating two magnetic field structures on a distance scale shorter than c/{omega}{sub pe}, which is about 10 cm in the solar corona, and reconnection must be triggered if {sigma} becomes sufficiently large. The radius of the sun, R{sub Circled-Dot-Operator }=7 Multiplication-Sign 10{sup 10}cm is about e{sup 23} times larger, so when {sigma} Greater-Than-Or-Equivalent-To 23, two lines separated by c/{omega}{sub pe} at one location can be separated by the full scale of any magnetic structures in the corona at another. The conditions for achieving a large exponentiation, {sigma}, are derived, and the importance of exponentiation is discussed.

Boozer, Allen H. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)

2012-11-15T23:59:59.000Z

172

Superconducting trapped-field magnets: Temperature and field distributions during pulsed-field activation  

E-Print Network (OSTI)

progress in fabrication of large-sized high- temperature superconductors with high critical current den We calculate the temperature and magnetic field distributions in a bulk superconductor during leads to a strong temperature rise in superconductor during the activation pro- cess. There have already

Johansen, Tom Henning

173

LABORATORY II ELECTRIC FIELDS AND ELECTRIC POTENTIALS  

E-Print Network (OSTI)

Lab II - 1 LABORATORY II ELECTRIC FIELDS AND ELECTRIC POTENTIALS In this lab you will continue to investigate the abstract concept of electric field. If you know the electric field at a point in space, you). With this simulation you can construct a complicated charge configuration and read out the resulting electric field

Minnesota, University of

174

Carlsbad Field Office Manager Selected  

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

Carlsbad Field Office Manager Selected CARLSBAD, N.M., November 10, 2011 - The U.S. Department of Energy's (DOE) Richland Operations Office (RL) Assistant Manager for the River Corridor Joe Franco was selected as Manager for the Carlsbad Field Office (CBFO), which oversees the Waste Isolation Pilot Plant (WIPP). CBFO Deputy Manager Ed Ziemianski has been acting in the CBFO Manager's position for the past year and will continue to serve as Deputy Manager. In operation since 1999, WIPP is a DOE facility designed to safely isolate defense-related transuranic (TRU) waste from people and the environment. Since 2006, Franco was responsible for cleanup and restoration of the 220 square miles of the

175

Apparatuses and methods for generating electric fields  

DOE Patents (OSTI)

Apparatuses and methods relating to generating an electric field are disclosed. An electric field generator may include a semiconductive material configured in a physical shape substantially different from a shape of an electric field to be generated thereby. The electric field is generated when a voltage drop exists across the semiconductive material. A method for generating an electric field may include applying a voltage to a shaped semiconductive material to generate a complex, substantially nonlinear electric field. The shape of the complex, substantially nonlinear electric field may be configured for directing charged particles to a desired location. Other apparatuses and methods are disclosed.

Scott, Jill R; McJunkin, Timothy R; Tremblay, Paul L

2013-08-06T23:59:59.000Z

176

Gamma radiation field intensity meter  

DOE Patents (OSTI)

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

Thacker, L.H.

1995-10-17T23:59:59.000Z

177

Gamma radiation field intensity meter  

DOE Patents (OSTI)

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode. 4 figs.

Thacker, L.H.

1994-08-16T23:59:59.000Z

178

Gamma radiation field intensity meter  

DOE Patents (OSTI)

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

Thacker, Louis H. (Knoxville, TN)

1995-01-01T23:59:59.000Z

179

Gamma radiation field intensity meter  

DOE Patents (OSTI)

A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of movement of an electroscope element charged by the tritium battery. Ionizing radiation decreases the voltage at the element and causes movement. A bleed resistor is coupled between the electroscope support element or electrode and the ionization chamber wall electrode.

Thacker, Louis H. (Knoxville, TN)

1994-01-01T23:59:59.000Z

180

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 "abu safah field" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

The Theory of Quantized Fields. II  

Science Journals Connector (OSTI)

The arguments leading to the formulation of the action principle for a general field are presented. In association with the complete reduction of all numerical matrices into symmetrical and antisymmetrical parts, the general field is decomposed into two sets, which are identified with Bose-Einstein and Fermi-Dirac fields. The spin restriction on the two kinds of fields is inferred from the time reflection invariance requirement. The consistency of the theory is verified in terms of a criterion involving the various generators of infinitesimal transformations. Following a discussion of charged fields, the electromagnetic field is introduced to satisfy the postulate of general gauge invariance. As an aspect of the latter, it is recognized that the electromagnetic field and charged fields are not kinematically independent. After a discussion of the field strength commutation relations, the independent dynamical variables of the electromagnetic field are exhibited in terms of a special gauge.

Julian Schwinger

1953-08-01T23:59:59.000Z

182

Active Cores in Deep Fields  

E-Print Network (OSTI)

Deep field observations are an essential tool to probe the cosmological evolution of galaxies. In this context, X-ray deep fields provide information about some of the most energetic cosmological objects: active galactic nuclei (AGN). Astronomers are interested in detecting sufficient numbers of AGN to probe the accretion history at high redshift. This talk gives an overview of the knowledge resulting from a highly complete soft X-ray selected sample collected with ROSAT, XMM-Newton and Chandra deep fields. The principal outcome based on X-ray luminosity functions and space density evolution studies is that low-luminosity AGN evolve in a dramatically different way from high-luminosity AGN: The most luminous quasars perform at significantly earlier cosmic times and are most numerous in a unit volume at cosmological redshift z~2. In contrast, low-luminosity AGN evolve later and their space density peaks at z~0.7. This finding is also interpreted as an anti-hierarchical growth of supermassive black holes in the Universe. Comparing this with star formation rate history studies one concludes that supermassive black holes enter the cosmic stage before the bulk of the first stars. Therefore, first solutions of the so-called hen-egg problem are suggested. Finally, status developments and expectations of ongoing and future extended observations such as the XMM-COSMOS project are highlighted.

G. Hasinger; A. Mueller

2005-10-14T23:59:59.000Z

183

Field evaluation of composite crossarms  

SciTech Connect

In 1982 the Institute of Wood Research manufactured 200 composite wood crossarms (COMARMS) for a field evaluation of their performance in service. Four different types of COMARMS were fabricated using wood flake panels to test how long term load carrying capacity is affected by varying wood furnish, wood preservatives and adhesive system. After placement with utilities in Louisiana, Michigan, New Mexico, Texas and Washington, field inspections were carried out on over 120 COMARMS after 3 years of exposure and 6 years exposure. After 6 years of exposure, most of the COMARMS were removed at random and returned to the Institute for destructive mechanical testing and evaluation. Half of the controls were mechanically tested soon after fabrication, the other half were tested with the exposed COMARMS after six years of inside storage. Tests of insulating performance in weathered and unweathered arms were carried out by Detroit Edison Company. Results of the mechanical tests and field inspections showed a wide variety of performance strongly correlated to the formulation type. Results of the mechanical and electrical testing indicate that performance similar to that observed in the best formulations would be comparable to Douglas-fir crossarms. 24 refs.

Diebel, J.F.; Charneski, M.D.; Bulleit, W.A.; Pickens, J.M. (Michigan Technological Univ., Houghton, MI (United States). Inst. of Wood Research)

1991-10-01T23:59:59.000Z

184

Atmospheric bromine flux from the coastal Abu Dhabi sabkhat: A ground-water mass-balance investigation  

E-Print Network (OSTI)

2007; published 31 July 2007. [1] A solute mass-balance study of ground water of the 3000 km2 coastal area of active salt flats then it is a significant, and generally under recognized, input to the global., 2000; Keppler et al., 2000]. More relevant to this study area are reports in which bromide appears

185

Performance Analysis of a Multithreaded PDES Simulator on Multicore Clusters Jingjing Wang, Dmitry Ponomarev, and Nael Abu-Ghazaleh  

E-Print Network (OSTI)

) [2], [3], [4] is used to improve the capacity and performance of DES by leveraging parallel Optimistic Simulation System (ROSS) [6]: a state of the art PDES simulator that employs message passing for communication using MPICH [7]. To achieve a better performance, a multithreaded version of ROSS (ROSS

Ponomarev, Dmitry V.

186

ReUcs of samarskite structure in a metamict ABU4 mineral and its high-temperature transformations  

E-Print Network (OSTI)

as a proposed high.temperature samarskite phase with wolframite.type stmcture (s.g. P2/c, a~5.63(]) A,b~9

Downs, Robert T.

187

DOE Recovery Act Field Projects | Department of Energy  

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

DOE Recovery Act Field Projects DOE Recovery Act Field Projects DOE Recovery Act Field Projects View All Maps Addthis...

188

Eddy-Current-Induced Multipole Field Calculations  

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

Eddy-Current-Induced Multipole Field Calculations Eddy-Current-Induced Multipole Field Calculations September 29, 2003 1 Eddy-Current-Induced Multipole Field Calculations Nicholas S. Sereno, Suk H. Kim 1.0 Abstract Time-varying magnetic fields of magnets in booster accelerators induce substantial eddy currents in the vacuum chambers. The eddy currents in turn act to produce various multi- pole fields that act on the beam. These fields must be taken into account when doing a lat- tice design. In the APS booster, the relatively long dipole magnets (3 meters) are linearly ramped to accelerate the injected 325 MeV beam to 7 GeV. Substantial dipole and sextu- pole fields are generated in the elliptical vacuum chamber from the induced eddy currents. In this note, formulas for the induced dipole and sextupole fields are derived for elliptical and rectangular vacuum chambers for a time-varying dipole field. A discussion is given

189

Coherence Properties of Optical Fields  

Science Journals Connector (OSTI)

This article presents a review of coherence properties of electromagnetic fields and their measurements, with special emphasis on the optical region of the spectrum. Analyses based on both the classical and quantum theories are described. After a brief historical introduction, the elementary concepts which are frequently employed in the discussion of interference phenomena are summarized. The measure of second-order coherence is then introduced in connection with the analysis of a simple interference experiment and some of the more important second-order coherence effects are studied. Their uses in stellar interferometry and interference spectroscopy are described. Analysis of partial polarization from the standpoint of correlation theory is also outlined. The general statistical description of the field is discussed in some detail. The recently discovered universal "diagonal" representation of the density operator for free fields is also considered and it is shown how, with the help of the associated generalized phase-space distribution function, the quantum-mechanical correlation functions may be expressed in the same form as the classical ones. The sections which follow deal with the statistical properties of thermal and nonthermal light, and with the temporal and spatial coherence of blackbody radiation. Later sections, dealing with fourth- and higher-order coherence effects include a discussion of the photoelectric detection process. Among the fourth-order effects described in detail are bunching phenomena, the Hanbury Brown-Twiss effect and its application to astronomy. The article concludes with a discussion of various transient superposition effects, such as light beats and interference fringes produced by independent light beams.

L. MANDEL and E. WOLF

1965-04-01T23:59:59.000Z

190

"Quantum Field Theory and QCD"  

SciTech Connect

This grant partially funded a meeting, "QFT & QCD: Past, Present and Future" held at Harvard University, Cambridge, MA on March 18-19, 2005. The participants ranged from senior scientists (including at least 9 Nobel Prize winners, and 1 Fields medalist) to graduate students and undergraduates. There were several hundred persons in attendance at each lecture. The lectures ranged from superlative reviews of past progress, lists of important, unsolved questions, to provocative hypotheses for future discovery. The project generated a great deal of interest on the internet, raising awareness and interest in the open questions of theoretical physics.

Jaffe, Arthur M.

2006-02-25T23:59:59.000Z

191

Optimizing program increases field's profits  

SciTech Connect

By combining benefits of several techniques to increase production and cut drilling and completion costs, Royal Oil and Gas Corp. has increased profitability on it leases in the AWP (Olmos) field, and made the operations economical in the 1988 price environment. The optimization program has included modifying fracture treatments, refracturing older wells, infill drilling, and down sizing of tubulars. Royal has also participated in consortium efforts to increase AWP (Olmos) production through analysis using a borehole televiewer, microfracturing, and history matching. Study of reservoir changes since the beginning of production has led Royal to alter its fracture stimulation designs to reduce treatment sizes that can further increase savings.

Huebinger, T.; Webster, D.; Chrisholm, P.; Venditto, J.; Hunt, J.

1988-08-29T23:59:59.000Z

192

Primordial magnetic fields in false vacuum inflation  

Science Journals Connector (OSTI)

We show that, during false vacuum inflation, a primordial magnetic field can be created sufficiently strong to seed the galactic dynamo and generate the observed galactic magnetic fields. Considering the inflaton-dominated regime, our field is produced by the Higgs-field gradients, resulting from a grand unified phase transition. The evolution of the field is followed from its creation through to the epoch of structure formation, subject to the relevant constraints. We find that it is possible to create a magnetic field of sufficient magnitude, provided the phase transition occurs during the final five e-foldings of the inflationary period.

Anne-Christine Davis and Konstantinos Dimopoulos

1997-06-15T23:59:59.000Z

193

Geothermal/Well Field | 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 Page Edit History Facebook icon Twitter icon » Geothermal/Well Field < Geothermal(Redirected from Well Field) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Well Fields and Reservoirs General Techniques Tree Techniques Table Regulatory Roadmap NEPA (45) Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating hydrothermal geothermal development. Copyright © 1995 Warren Gretz Geothermal Well Fields discussion Groups of Well Field Techniques

194

Hybrid mesons and auxiliary fields  

E-Print Network (OSTI)

Hybrid mesons are exotic mesons in which the color field is not in the ground state. Their understanding deserves interest from a theoretical point of view, because it is intimately related to nonperturbative aspects of QCD. Moreover, it seems that some recently detected particles, such as the $\\pi_1(1600)$ and the Y(4260), are serious hybrid candidates. In this work, we investigate the description of such exotic hadrons by applying the auxiliary fields technique to the widely used spinless Salpeter Hamiltonian with appropriate linear confinement. Instead of the usual numerical resolution, this technique allows to find simplified analytical mass spectra and wave functions of the Hamiltonian, which still lead to reliable qualitative predictions. We analyse and compare two different descriptions of hybrid mesons, namely a two-body $q\\bar q$ system with an excited flux tube, or a three-body $q\\bar q g$ system. We also compute the masses of the $1^{-+}$ hybrids. Our results are shown to be in satisfactory agreement with lattice QCD and other effective models.

Fabien Buisseret; Vincent Mathieu

2006-07-07T23:59:59.000Z

195

Magnetic field topology and field lines structure in the Dynamic Ergodic Divertor of TEXTOR-94  

Science Journals Connector (OSTI)

An analytical model of the magnetic field perturbations and the mapping technique to study field line dynamics in an ergodic divertor tokamak are developed. The analytical formulas for the vacuum magnetic field p...

S. S. Abdullaev; K. H. Finken; A. Kaleck

1998-01-01T23:59:59.000Z

196

Category:Field Sampling | Open Energy Information  

Open Energy Info (EERE)

Category Category Edit History Facebook icon Twitter icon » Category:Field Sampling Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Field Sampling page? For detailed information on Field Sampling as exploration techniques, click here. Category:Field Sampling Add.png Add a new Field Sampling Technique Subcategories This category has the following 2 subcategories, out of 2 total. G [×] Gas Sampling‎ 3 pages W [×] Water Sampling‎ 2 pages Pages in category "Field Sampling" The following 4 pages are in this category, out of 4 total. G Gas Sampling R Rock Sampling S Soil Sampling W Water Sampling Retrieved from "http://en.openei.org/w/index.php?title=Category:Field_Sampling&oldid=689818" Category: Field Techniques

197

Geothermal/Well Field | Open Energy Information  

Open Energy Info (EERE)

Geothermal/Well Field Geothermal/Well Field < Geothermal Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Land Use Leasing Exploration Well Field Power Plant Transmission Environment Water Use Print PDF Geothermal Well Fields and Reservoirs General Techniques Tree Techniques Table Regulatory Roadmap NEPA (42) Geothermal energy plant at The Geysers near Santa Rosa in Northern California, the world's largest electricity-generating hydrothermal geothermal development. Copyright © 1995 Warren Gretz Geothermal Well Fields discussion Groups of Well Field Techniques There are many different techniques that are utilized in geothermal well field development and reservoir maintenance depending on the region's geology, economic considerations, project maturity, and other considerations such as land access and permitting requirements. Well field

198

Golden Field Office Contacts | Department of Energy  

Energy Savers (EERE)

U.S. Department of Energy Golden Field Office 15013 Denver West Parkway Golden, Colorado 80401 Main Number: 720-356-1800 Main Fax: 720-356-1750 Golden Field Office Key...

199

The strength of galactic magnetic fields  

Science Journals Connector (OSTI)

... UK THE magnitudes of galactic magnetic fields are usually estimated from measurements of the radio synchroton emission arising from acceleration of cosmic-ray electrons in the magnetic field. To interpret ...

X. Chi; A. W. Wolfendale

1993-04-15T23:59:59.000Z

200

Magnetic fields in the solar photosphere  

Science Journals Connector (OSTI)

...magnetoconvection in the quiet Sun. Filled contours show the temperature variations in a horizontal...Sanchez Almeida2003Quiet-Sun magnetic fields at high...Almeida, and F Kneer2006The distribution of quiet Sun magnetic field strengths...

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Contractor Fee Payments - Carlsbad Field Office | Department...  

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

Carlsbad Field Office Contractor Fee Payments - Carlsbad Field Office See the amount of fees earned on EM's major contracts for each evaluated fee period and the total contract to...

202

The motion of magnetic field lines  

Science Journals Connector (OSTI)

The definition and applications of the motion of magnetic lines of force are reviewed and illustrated. First ... aid to describing the evolution of a known magnetic field. It is next shown that a known velocity field

David P. Stern

1966-11-01T23:59:59.000Z

203

Magnetic field lines for a flux tube  

Science Journals Connector (OSTI)

Equations for the magnetic field components in a two dimensional cylindrically symmetric ... in a simple case, solved. The resulting magnetic configuration possesses a strong magnetic field in a thin tube below a...

C. D. C. Steele; Rekha Jain

1993-05-01T23:59:59.000Z

204

Burley Field Office | Open Energy Information  

Open Energy Info (EERE)

Office1 This article is a stub. You can help OpenEI by expanding it. Burley Field Office is an organization based in Burley, Idaho. References "Burley Field Office" Retrieved...

205

10 Ways to "See" the Electric Field  

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

How can you demonstrate the electric field if it's invisible? This video shows you 10 activities and experiments that help to teach about the electric field using various apparatuses, such as a plasma ball or a Van de Graaff generator.

206

Holographic thermodynamics and transport of flavor fields.  

E-Print Network (OSTI)

??We use gauge-gravity duality to study a strongly-coupled non-Abelian gauge theory with flavor fields, i.e. fields transforming in the fundamental representation of the gauge group. (more)

O'Bannon, Andrew Hill, 1979-

2008-01-01T23:59:59.000Z

207

Einstein's Energy-Free Gravitational Field  

E-Print Network (OSTI)

We show that Einstein's gravitational field has zero energy, momentum, and stress. This conclusion follows directly from the gravitational field equations, in conjunction with the differential law of energy-momentum conservation $ T^{\\mu\

Kenneth Dalton

1998-03-13T23:59:59.000Z

208

Development of optical field emitter arrays  

E-Print Network (OSTI)

Optical field emitters are electron emission sources actuated by incident light. Optically actuated field emitters may produce ultrafast pulses of electrons when excited by ultrafast optical pulses, thus making them of ...

Yang, Yujia, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

209

CESA-1 Heliostat Field Evaluation Status Report  

Science Journals Connector (OSTI)

This paper describes the status of the evaluation activities of the CESA-1 Heliostat Field. The Heliostat field is composed of three hundred heliostats of two different types (CASA-II and...

Fernando Snchez

1985-01-01T23:59:59.000Z

210

Measurements and Calculations on Heliostat Field  

Science Journals Connector (OSTI)

The HERMES (Heliostat and Receiver Measuring System) has proved to ... for measurements of high solar fluxes from complete heliostat fields. The relevant measured data were heliostat field efficiency, beam qualit...

W. Schiel; G. Lemperle

1986-01-01T23:59:59.000Z

211

International Oil and Gas Board International Oil and Gas Board...  

Open Energy Info (EERE)

Oil and Gas Board Address Place Zip Website Abu Dhabi Supreme Petroleum Council Abu Dhabi Supreme Petroleum Council Abu Dhabi http www abudhabi ae egovPoolPortal WAR appmanager...

212

Field-induced confined states in graphene  

SciTech Connect

We report an approach to confine the carriers in single-layer graphene, which leads to quantum devices with field-induced quantum confinement. We demonstrated that the Coulomb-blockade effect evolves under a uniform magnetic field perpendicular to the graphene device. Our experimental results show that field-induced quantum dots are realized in graphene, and a quantum confinement-deconfinement transition is switched by the magnetic field.

Moriyama, Satoshi, E-mail: MORIYAMA.Satoshi@nims.go.jp [International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan); Morita, Yoshifumi [Faculty of Engineering, Gunma University, Kiryu, Gunma 376-8515 (Japan); Watanabe, Eiichiro; Tsuya, Daiju [Nanotechnology Innovation Station, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan)

2014-02-03T23:59:59.000Z

213

Model Atmospheres for Low Field Neutron Stars  

E-Print Network (OSTI)

We compute model atmospheres and emergent spectra for low field (Bsolar abundance and iron atmospheres. We compare our results to high field magnetic atmospheres, available only for hydrogen. An application to apparently thermal flux from the low field millisecond pulsar PSR J0437--4715 shows that H atmospheres fit substantially better than Fe models. We comment on extension to high fields and the implication of these results for neutron star luminosities and radii.

Mohan Rajagopal; Roger Romani

1995-10-19T23:59:59.000Z

214

Rotating copper plasmoid in external magnetic field  

SciTech Connect

Effect of nonuniform magnetic field on the expanding copper plasmoid in helium and argon gases using optical emission spectroscopy and fast imaging is presented. We report a peculiar oscillatory rotation of plasmoid in magnetic field and argon ambient. The temporal variation and appearance of the dip in the electron temperature show a direct evidence of the threading and expulsion of the magnetic field lines from the plasmoid. Rayleigh Taylor instability produced at the interface separating magnetic field and plasma is discussed.

Pandey, Pramod K.; Thareja, Raj K. [Department of Physics, Indian Institute of Technology Kanpur, Uttar Pradesh 208 016 (India)

2013-02-15T23:59:59.000Z

215

AUTOMATED CRITICAL PEAK PRICING FIELD TESTS  

E-Print Network (OSTI)

AUTOMATED CRITICAL PEAK PRICING FIELD TESTS: 2006 PROGRAM DESCRIPTION AND RESULTS APPENDICES.................................................................................... 5 B.2. DR Automation Server User Guide

216

Field Mapping At Dixie Valley Geothermal Field Area (Wesnousky, Et Al.,  

Open Energy Info (EERE)

2003) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Dixie Valley Geothermal Field Area (Wesnousky, Et Al., 2003) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique Field Mapping Activity Date Usefulness not indicated DOE-funding Unknown References Steven Wesnousky, S. John Caskey, John W. Bell (2003) Recency Of Faulting And Neotechtonic Framework In The Dixie Valley Geothermal Field And Other Geothermal Fields Of The Basin And Range Retrieved from "http://en.openei.org/w/index.php?title=Field_Mapping_At_Dixie_Valley_Geothermal_Field_Area_(Wesnousky,_Et_Al.,_2003)&oldid=510736" Categories: Exploration Activities DOE Funded Activities What links here

217

Transport of Field Lines and Particles in a Stochastic Magnetic Field  

Science Journals Connector (OSTI)

In this chapter the transport of field lines and charged particles in a stochastic magnetic field will be investigated. To study this problem...

Sadrilla Abdullaev

2014-01-01T23:59:59.000Z

218

Vector optical fields with polarization distributions similar to electric and magnetic field lines  

Science Journals Connector (OSTI)

We present, design and generate a new kind of vector optical fields with linear polarization distributions modeling to electric and magnetic field lines. The geometric configurations...

Pan, Yue; Li, Si-Min; Mao, Lei; Kong, Ling-Jun; Li, Yongnan; Tu, Chenghou; Wang, Pei; Wang, Hui-Tian

2013-01-01T23:59:59.000Z

219

Nonlinear Dark-Field Microscopy Hayk Harutyunyan,  

E-Print Network (OSTI)

/20/2010 Published on Web: 11/16/2010 FIGURE 1. Illustration of the nonlinear dark-field imaging method. Two incidentNonlinear Dark-Field Microscopy Hayk Harutyunyan, Stefano Palomba, Jan Renger, Romain Quidant Dark-field microscopy is a background-free imaging method that provides high sensitivity and a large

Novotny, Lukas

220

CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION  

E-Print Network (OSTI)

Chapter 5 CORONAL MAGNETIC FIELD MEASUREMENTS THROUGH GYRORESONANCE EMISSION Stephen M. White This article reviews the use of gyroresonance emission at radio wavelengths to measure coronal magnetic fields. Keywords: Sun, solar corona, solar magnetic fields, solar radio emission Introduction Since the realization

White, Stephen

Note: This page contains sample records for the topic "abu safah field" 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

Indefinite-Metric Quantum Field Theory  

Science Journals Connector (OSTI)

......Umezawa H. Quantum Field Theory (1956) North Holland...Wightman L. Arch. Fysik (1964) 28:129. Y...indefinite-metric quantum field theory, which was published...book, except for some basic points. The use of the...space in quantum field theory has been motivated for......

Noboru Nakanishi

1972-03-01T23:59:59.000Z

222

Experiments on Magnetic-Field-Line Reconnection  

Science Journals Connector (OSTI)

In a very large laboratory plasma the process of magnetic-field-line reconnection has been diagnosed carefully. The temporal evolution of a narrow (?3c?pe) neutral layer with Petschek slow shocks is observed. Electrostatic fields are found to be as important as induced electric fields.

R. L. Stenzel and W. Gekelman

1979-04-16T23:59:59.000Z

223

Near-field diffractive elements Daniel Marks  

E-Print Network (OSTI)

by a near-field diffractive element (NDE) that scatters the high-spatial-frequency components of the field susceptibility r , and the NDE is described by the susceptibilty r . The field obeys the equation 2 U r +k0 2 U r to first order in both the NDE and the sample susceptibilities. It is assumed that the background terms

Bhargava, Rohit

224

Non-Abelian Gauge Fields. Relativistic Invariance  

Science Journals Connector (OSTI)

A simple criterion for Lorentz invariance in quantum field theory is stated as a commutator condition relating the energy density to the momentum density. With its aid a relativistically invariant radiation-gauge formulation is devised for a non-Abelian vector-gauge field coupled to a spin- Fermi field.

Julian Schwinger

1962-07-01T23:59:59.000Z

225

The Mechanics of the Electric Field  

Science Journals Connector (OSTI)

... field and would be longer for weak fields than for strong. Now consider an electron oscillating with a definite period Ta. Close to the electrons the electric field may be ... one often used by Lord Kelvin. This is the case of a tightly stretched long string loaded at equal intervals with equal masses. This system has many periods. If P ...

J. J. THOMSON

1926-09-04T23:59:59.000Z

226

ARM - Field Campaign - PGS Validatation  

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

govCampaignsPGS Validatation govCampaignsPGS Validatation Related Campaigns Precision Gas Sampling (PGS) Validation Field Campaign 2008.01.01, Fischer, SGP Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : PGS Validatation 2009.03.01 - 2010.02.28 Lead Scientist : Marc Fischer For data sets, see below. Description The focus of this project was the prediction of landscape-scale fluxes of CO2, water, and sensible heat that drive variations in carbon cycle and regional climate (e.g., cloud formation and precipitation). Variation in these fluxes, caused by land use, management, and changing climate, requires models that are parameterized and tested against measurements made in multiple land cover types and over seasonal to inter-annual time scales.

227

ARM - Field Campaign - BDRF Campaign  

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

govCampaignsBDRF Campaign govCampaignsBDRF Campaign Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Campaign : BDRF Campaign 1998.08.03 - 1998.08.28 Lead Scientist : Donald Slater Summary The BDRF campaign is a CERES (on the TRMM satellite) validation exercise that involves helicopter measurements of upwelling radiation made by an ASD spectrometer and broadband radiometers, along an on-board scanning radiometer that can track a particular pixel in flight (for BDRF). On the ground, surface instruments will be placed in close proximity to "targeted" farm fields (near the central facility) rented from local farmers, representing a variety of vegetation types. These ground instruments will also be located at the central facility. Ground instruments tentatively

228

ARM - Propose a Field Campaign  

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

govCampaignsPropose a Campaign govCampaignsPropose a Campaign Schedule and Availability Preproposals now open for AMF and AAF Preproposals due 1 Feb Invited full proposals due 1 May AAF available Dec 2015 AMF1 available Apr 2016 AMF2 available early 2017 AMF3 available for guest instrumentation or intensive operational periods Forms Propose a Campaign Form Instrument Support Request (ISR) Form (Word, 89KB) Documentation Steps to Send Campaign Data to ARM Data Archive Field Campaign Guidelines (PDF, 1.1MB) Propose a Campaign : Preproposal Form Preproposals are short summaries of the proposed campaign and can originate with any scientist. Before you begin your preproposal, you should review the guidelines for submitting proposals. If you are preparing your preproposals locally on your computer, please

229

BRST invariant effective action of shadow fields, conformal fields, and AdS/CFT  

E-Print Network (OSTI)

Totally symmetric arbitrary spin massless and massive fields in AdS space are studied. For such fields, we obtain Lagrangians which are invariant under global BRST transformations. The Lagrangians are used for computation of partition functions and effective actions. We demonstrate that BRST invariant bulk action for massless field evaluated on the solution of Dirichlet problem for gauge massless fields and Faddeev-Popov fields leads to BRST invariant effective action for canonical shadow gauge fields and shadow Faddeev-Popov fields, while the BRST invariant bulk action for massive field evaluated on the solution of Dirichlet problem for gauge massive fields and Faddeev-Popov fields leads to BRST invariant effective action for anomalous shadow gauge fields and shadow Faddeev-Popov fields. The leading logarithmic divergence of the regularized effective action for the canonical shadow field leads to simple BRST invariant action of conformal field. We demonstrate that the Nakanishi-Laudrup fields entering the BRST invariant Lagrangian of conformal field can geometrically be interpreted as boundary values of massless AdS fields.

R. R. Metsaev

2014-09-08T23:59:59.000Z

230

Graphene Nanoribbon in Sharply Localized Magnetic Fields  

E-Print Network (OSTI)

We study the effect of a sharply localized magnetic field on the electron transport in a strip (ribbon) of graphene sheet, which allows to give results for the transmission and reflection probability through magnetic barriers. The magnetic field is taken as a single and double delta type localized functions, which are treated later as the zero width limit of gaussian fields. For both field configurations, we evaluate analytically and numerically their transmission and reflection coefficients. The possibility of spacial confinement due to the inhomogeneous field configuration is also investigated.

Abdulaziz D. Alhaidari; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

2011-03-21T23:59:59.000Z

231

Steady State Thermoelectric Field-Reversed Configurations  

Science Journals Connector (OSTI)

It is shown that the cross-field thermoelectric force of magnetized plasmas can maintain field-reversed configurations against resistive diffusion, resulting in a steady state device attractive for thermonuclear fusion. If a peaked radial temperature profile is maintained, the thermoelectric force is in the opposite direction to the usual resistive friction, thus maintaining the field configuration. The field maintenance is tantamount to dynamo action, operating even in two dimensions. We show that a steady state device can be made by simply heating the O-point: no external electric fields or particle sources are needed. The feasibility of this scheme for fusion is discussed.

A. B. Hassam; R. M. Kulsrud; R. J. Goldston; H. Ji; M. Yamada

1999-10-11T23:59:59.000Z

232

Energy and Momentum Density in Field Theory  

Science Journals Connector (OSTI)

It is shown that the energy density commutator condition in its simplest form is valid for interacting spin 0, , 1 field systems, but not for higher spin fields. The action principle is extended, for this purpose, to arbitrary coordinate frames. There is a discussion of four categories of fields and some explicit consideration of spin 32 as the simplest example that gives additional terms in the energy density commutator. As the fundamental equation of relativistic quantum field theory, the commutator condition makes explicit the greater physical complexity of higher spin fields.

Julian Schwinger

1963-04-15T23:59:59.000Z

233

Information operations with an excitable field  

Science Journals Connector (OSTI)

It is well established that a traveling wave can be generated on an excitable field, which is described with a pair of partial differential equations for an activator and inhibitor. In the present paper, we use a numerical simulation to show that the traveling wave, or signaling pulse, can be transmitted from an excitable field to an opposing excitable field via an intervening passive diffusion field in a characteristic manner depending on the spatial geometry of the excitable fields. Using such characteristics, it is possible to design various kinds of logic gates together with a time-sequential memory device. Thus, these functions can perform time-sensitive operations in the absence of any controlling clock. It may be possible to accomplish these computations with excitable fields in an actual system, or to create a field computer composed of electronic active and passive units.

Ikuko Motoike and Kenichi Yoshikawa

1999-05-01T23:59:59.000Z

234

Unique topological characterization of braided magnetic fields  

SciTech Connect

We introduce a topological flux function to quantify the topology of magnetic braids: non-zero, line-tied magnetic fields whose field lines all connect between two boundaries. This scalar function is an ideal invariant defined on a cross-section of the magnetic field, and measures the average poloidal magnetic flux around any given field line, or the average pairwise crossing number between a given field line and all others. Moreover, its integral over the cross-section yields the relative magnetic helicity. Using the fact that the flux function is also an action in the Hamiltonian formulation of the field line equations, we prove that it uniquely characterizes the field line mapping and hence the magnetic topology.

Yeates, A. R. [Department of Mathematical Sciences, Durham University, Durham DH1 3LE (United Kingdom); Hornig, G. [Division of Mathematics, University of Dundee, Dundee DD1 4HN (United Kingdom)

2013-01-15T23:59:59.000Z

235

Maintaining the closed magnetic-field-line topology of a field-reversed configuration (FRC)  

E-Print Network (OSTI)

1 Maintaining the closed magnetic-field-line topology of a field-reversed configuration (FRC, WA 98052 Abstract The effects on magnetic-field-line structure of adding various static transverse introduce pronounced shear. #12;2 I. Introduction Magnetic field lines are closed. Where closure occurs

236

Marathon solves Brae Field's problems  

SciTech Connect

When Marathon Oil starts production in the South Brae field (North Sea) this summer, it will have set the following milestones: (1) The 13,500-ft reservoir is the deepest developed in the North Sea to date, (2) the topside equipment is the heaviest placed on any North Sea steel jacket, (3) the produced gas contains a large amount of liquefiable hydrocarbons and 35% carbon dioxide (4) the platforms gas-sweetening module is the first ever installed offshore, (5) reservoir temperature (240/sup 0/F) is the highest of any North Sea reservoir developed so far, (6) the entire project is one of the few in the North Sea to be completed on schedule and within the budget proposed 3 years earlier, and (7) the deck modules were virtually 100% complete before being lifted onto the jacket. Some recently drilled wells in the area have found hydrocarbons outside the reach of the platform. One of these areas, designated North Brae, appears to hold a condensate reservoir that shows promise of becoming commercial. Marathon engineers feel a strong possibility that one or more additional platforms will be needed in the area.

Bleakley, W.B.

1983-03-15T23:59:59.000Z

237

Coherent hybrid electromagnetic field imaging  

DOE Patents (OSTI)

An apparatus and corresponding method for coherent hybrid electromagnetic field imaging of a target, where an energy source is used to generate a propagating electromagnetic beam, an electromagnetic beam splitting means to split the beam into two or more coherently matched beams of about equal amplitude, and where the spatial and temporal self-coherence between each two or more coherently matched beams is preserved. Two or more differential modulation means are employed to modulate each two or more coherently matched beams with a time-varying polarization, frequency, phase, and amplitude signal. An electromagnetic beam combining means is used to coherently combine said two or more coherently matched beams into a coherent electromagnetic beam. One or more electromagnetic beam controlling means are used for collimating, guiding, or focusing the coherent electromagnetic beam. One or more apertures are used for transmitting and receiving the coherent electromagnetic beam to and from the target. A receiver is used that is capable of square-law detection of the coherent electromagnetic beam. A waveform generator is used that is capable of generation and control of time-varying polarization, frequency, phase, or amplitude modulation waveforms and sequences. A means of synchronizing time varying waveform is used between the energy source and the receiver. Finally, a means of displaying the images created by the interaction of the coherent electromagnetic beam with target is employed.

Cooke, Bradly J. (Jemez Springs, NM); Guenther, David C. (Los Alamos, NM)

2008-08-26T23:59:59.000Z

238

Magnetic fields in Neutron Stars  

E-Print Network (OSTI)

Isolated neutron stars show a diversity in timing and spectral properties, which has historically led to a classification in different sub-classes. The magnetic field plays a key role in many aspects of the neutron star phenomenology: it regulates the braking torque responsible for their timing properties and, for magnetars, it provides the energy budget for the outburst activity and high quiescent luminosities (usually well above the rotational energy budget). We aim at unifying this observational variety by linking the results of the state-of-the-art 2D magneto-thermal simulations with observational data. The comparison between theory and observations allows to place two strong constraints on the physical properties of the inner crust. First, strong electrical currents must circulate in the crust, rather than in the star core. Second, the innermost part of the crust must be highly resistive, which is in principle in agreement with the presence of a novel phase of matter so-called nuclear pasta phase.

Vigan, Daniele; Miralles, Juan A; Rea, Nanda

2015-01-01T23:59:59.000Z

239

Magnetic field perturbations in the systems where only poloidal magnetic field is present*  

E-Print Network (OSTI)

. Introduction of a weak regular toroidal magnetic field reduces radial excursions of the field lines. Possible #12;6 The equations for the perturbed magnetic field line are: dr dJ = dBr +dB1r B0 +dBJ ; dz dJ = d1 Magnetic field perturbations in the systems where only poloidal magnetic field is present* D

240

Field investigation of keyblock stability  

SciTech Connect

Discontinuities in a rock mass can intersect an excavation surface to form discrete blocks (keyblocks) which can be unstable. This engineering problem is divided into two parts: block identification, and evaluation of block stability. One stable keyblock and thirteen fallen keyblocks were observed in field investigations at the Nevada Test Site. Nine blocks were measured in detail sufficient to allow back-analysis of their stability. Measurements included block geometry, and discontinuity roughness and compressive strength. Back-analysis correctly predicted stability or failure in all but two cases. These two exceptions involved situations that violated the stress assumptions of the stability calculations. Keyblock faces correlated well with known joint set orientations. The effect of tunnel orientation on keyblock frequency was apparent. Back-analysis of physical models successfully predicted block pullout force for two-dimensional models of unit thickness. Two-dimensional (2D) and three-dimensional (3D) analytic models for the stability of simple pyramidal keyblocks were examined. Calculated stability is greater for 3D analyses than for 2D analyses. Calculated keyblock stability increases with larger in situ stress magnitudes, larger lateral stress ratios, and larger shear strengths. Discontinuity stiffness controls block displacement more strongly than it does stability itself. Large keyblocks are less stable than small ones, and stability increases as blocks become more slender. Rock mass temperature decreases reduce the confining stress magnitudes and can lead to failure. The pattern of stresses affecting each block face explains conceptually the occurrence of pyramidal keyblocks that are truncated near their apex.

Yow, J.L. Jr.

1985-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Field Offices | National Nuclear Security Administration  

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

Offices | National Nuclear Security Administration Offices | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Field Offices Home > Field Offices Field Offices Printer-friendly version Printer-friendly version Facebook Twitter Youtube Flickr Learn More Welcome to the Sandia Field Office Welcome to the Kansas City Field Office Welcome to the Livermore Field Office

242

Nevada Field Office | National Nuclear Security Administration  

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

Nevada Field Office | National Nuclear Security Administration Nevada Field Office | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > About Us > Our Locations > Nevada Field Office Nevada Field Office http://www.nv.doe.gov/main.aspx Field Office: Located in Las Vegas, Nevada, the Nevada Field Office (NFO) oversees operations for the NNSA Nevada National Security Site. Due to the

243

Golden Field Office Contacts | Department of Energy  

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

Golden Field Office Contacts Golden Field Office Contacts Golden Field Office Contacts On this page you will find address and contact information for the Golden Field Office. Mailing Address: U.S. Department of Energy Golden Field Office 15013 Denver West Parkway Golden, Colorado 80401 Main Number: 720-356-1800 Main Fax: 720-356-1750 Golden Field Office Key Contacts: Business Operations Director (Acting) Doug Kaempf 720-356-1753 Business Services Deputy Director Timothy Meeks 720-356-1403 Chief Counsel Derek Passarelli 720-356-1742 Freedom of Information Act Michele Altieri 720-356-1427 Environmental Oversight Robin Sweeney 720-356-1562 National Laboratory Oversight Doug Hooker 720-356-1578 Financial Oversight Marlys Kinsey 720-356-1427 Procurement Services Director John Meeker 720-356-1399

244

Wire codes, magnetic fields, and childhood cancer  

SciTech Connect

Childhood cancer has been modestly associated with wire codes, an exposure surrogate for power frequency magnetic fields, but less consistently with measured fields. The authors analyzed data on the population distribution of wire codes and their relationship with several measured magnetic field metrics. In a given geographic area, there is a marked trend for decreased prevalence from low to high wire code categories, but there are differences between areas. For average measured fields, there is a positive relationship between the mean of the distributions and wire codes but a large overlap among the categories. Better discrimination is obtained for the extremes of the measurement values when comparing the highest and the lowest wire code categories. Instability of measurements, intermittent fields, or other exposure conditions do not appear to provide a viable explanation for the differences between wire codes and magnetic fields with respect to the strength and consistency of their respective association with childhood cancer.

Kheifets, L.I.; Kavet, R.; Sussman, S.S. [Electric Power Research Inst., Palo Alto, CA (United States)] [Electric Power Research Inst., Palo Alto, CA (United States)

1997-05-01T23:59:59.000Z

245

Stable magnetic fields in stellar interiors  

E-Print Network (OSTI)

We investigate the 50-year old hypothesis that the magnetic fields of the Ap stars are stable equilibria that have survived in these stars since their formation. With numerical simulations we find that stable magnetic field configurations indeed appear to exist under the conditions in the radiative interior of a star. Confirming a hypothesis by Prendergast (1956), the configurations have roughly equal poloidal and toroidal field strengths. We find that tori of such twisted fields can form as remnants of the decay of an unstable random initial field. In agreement with observations, the appearance at the surface is an approximate dipole with smaller contributions from higher multipoles, and the surface field strength can increase with the age of the star. The results of this paper were summarised by Braithwaite & Spruit (2004).

J. Braithwaite; A. Nordlund

2005-10-11T23:59:59.000Z

246

Superconducting strip in an oblique magnetic field  

Science Journals Connector (OSTI)

As an example for a seemingly simple but actually intricate problem, we study the Bean critical state in a superconducting strip of finite thickness d and width 2w?d placed in an oblique magnetic field. The analytical solution is obtained to leading order in the small parameter d?w. The critical state depends on how the applied magnetic field is switched on, e.g., at a constant tilt angle, or first the perpendicular and then the parallel field component. For these two basic scenarios we obtain the distributions of current density and magnetic field in the critical states. In particular, we find the shapes of the flux-free core and of the lines separating regions with opposite direction of the critical currents, the detailed magnetic field lines (along the vortex lines), and both components of the magnetic moment. The component of the magnetic moment parallel to the strip plane is a nonmonotonic function of the applied magnetic field.

G. P. Mikitik; E. H. Brandt; M. Indenbom

2004-07-30T23:59:59.000Z

247

Turbulent diffusion with rotation or magnetic fields  

E-Print Network (OSTI)

The turbulent diffusion tensor describing the evolution of the mean concentration of a passive scalar is investigated for forced turbulence either in the presence of rotation or a magnetic field. With rotation the Coriolis force causes a sideways deflection of the flux of mean concentration. Within the magnetohydrodynamics approximation there is no analogous effect from the magnetic field because the effects on the flow do not depend on the sign of the field. Both rotation and magnetic fields tend to suppress turbulent transport, but this suppression is weaker in the direction along the magnetic field. Turbulent transport along the rotation axis is not strongly affected by rotation, except on shorter length scales, i.e. when the scale of the variation of the mean field becomes comparable with the scale of the energy-carrying eddied.

Brandenburg, Axel; Vasil, Geoffrey M

2009-01-01T23:59:59.000Z

248

Magnetic field decay in model SSC dipoles  

SciTech Connect

We have observed that some of our model SSC dipoles have long time constant decays of the magnetic field harmonics with amplitudes large enough to result in significant beam loss, if they are not corrected. The magnets were run at constant current at the SSC injection field level of 0.3 tesla for one to three hours and changes in the magnetic field were observed. One explanation for the observed field decay is time dependent superconductor magnetization. Another explanation involves flux creep or flux flow. Data are presented on how the decay changes with previous flux history. Similar magnets with different Nb-Ti filament spacings and matrix materials have different long time field decay. A theoretical model using proximity coupling and flux creep for the observed field decay is discussed. 10 refs., 5 figs., 2 tabs.

Gilbert, W.S.; Althaus, R.F.; Barale, P.J.; Benjegerdes, R.W.; Green, M.A.; Green, M.I.; Scanlan, R.M.

1988-08-01T23:59:59.000Z

249

Baryon Tri-local Interpolating Fields  

E-Print Network (OSTI)

We systematically investigate tri-local (non-local) three-quark baryon fields with U_L(2)*U_R(2) chiral symmetry, according to their Lorentz and isospin (flavor) group representations. We note that they can also be called as "nucleon wave functions" due to this full non-locality. We study their chiral transformation properties and find all the possible chiral multiplets consisting J=1/2 and J=3/2 baryon fields. We find that the axial coupling constant |g_A| = 5/3 is only for nucleon fields belonging to the chiral representation (1/2,1)+(1,1/2) which contains both nucleon fields and Delta fields. Moreover, all the nucleon fields belonging to this representation have |g_A| = 5/3.

Hua-Xing Chen

2012-05-24T23:59:59.000Z

250

Electromagnetic field with constraints and Papapetrou equation  

E-Print Network (OSTI)

It is shown that geometric optical description of electromagnetic wave with account of its polarization in curved space-time can be obtained straightforwardly from the classical variational principle for electromagnetic field. For this end the entire functional space of electromagnetic fields must be reduced to its subspace of locally plane monochromatic waves. We have formulated the constraints under which the entire functional space of electromagnetic fields reduces to its subspace of locally plane monochromatic waves. These constraints introduce variables of another kind which specify a field of local frames associated to the wave and contain some congruence of null-curves. The Lagrangian for constrained electromagnetic field contains variables of two kinds, namely, a congruence of null-curves and the field itself. This yields two kinds of Euler-Lagrange equations. Equations of first kind are trivial due to the constraints imposed. Variation of the curves yields the Papapetrou equations for a classical massless particle with helicity 1.

Z. Ya. Turakulov; A. T. Muminov

2006-01-12T23:59:59.000Z

251

Field Emission and Nanostructure of Carbon Films  

SciTech Connect

The results of field emission measurements of various forms of carbon films are reported. It is shown that the films nanostructure is a crucial factor determining the field emission properties. In particular, smooth, pulsed-laser deposited amorphous carbon films with both high and low sp3 contents are poor field emitters. This is similar to the results obtained for smooth nanocrystalline, sp2-bonded carbon films. In contrast, carbon films prepared by hot-filament chemical vapor deposition (HE-CVD) exhibit very good field emission properties, including low emission turn-on fields, high emission site density, and excellent durability. HF-CVD carbon films were found to be predominantly sp2-bonded. However, surface morphology studies show that these films are thoroughly nanostructured, which is believed to be responsible for their promising field emission properties.

Merkulov, V.I.; Lowndes, D.H.; Baylor, L.R.

1999-11-29T23:59:59.000Z

252

Methane Hydrate Field Studies | Department of Energy  

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

Field Studies Field Studies Methane Hydrate Field Studies Arctic/Alaska North Slope Field Studies Since 2001, DOE has conducted field trials of exploration and production technology in the Alaska North Slope. Although Alaska methane hydrate resources are smaller than marine deposits and currently lack outlets to commercial markets, Alaska provides an excellent laboratory to study E&P technology. The research also has implications for various Alaska resources, including potential gas hydrate resources for local communities, conventional "stranded" gas, as well as Alaska's large unconventional oil resources. The hydrate deposits have been delineated in the process of developing underlying oil fields, and drilling costs are much lower than offshore. DOE-BP Project

253

Ultracold Plasma Expansion in a Magnetic Field  

Science Journals Connector (OSTI)

We measure the expansion of an ultracold plasma across the field lines of a uniform magnetic field. We image the ion distribution by extracting the ions with a high-voltage pulse onto a position-sensitive detector. Early in the lifetime of the plasma (magnetic field (up to 70G). We observe that the expansion velocity scales as B-1/2, explained by a nonlinear ambipolar diffusion model with anisotropic diffusion in two different directions.

X. L. Zhang; R. S. Fletcher; S. L. Rolston; P. N. Guzdar; M. Swisdak

2008-06-13T23:59:59.000Z

254

Process development for a field emission structure  

E-Print Network (OSTI)

self-aligned process technology has been developed to fabricate field emis- sion structures using standard semiconductor fabrication procedures. Arrays of field emission diode structures incorporating silicon cathodes have been fabricated... already been fa. bricated. The aim of' this research is focused on developing a process technology to fabri- cate field emission structures incorporating a low work function cathode material. In addition, this technology must allow for adjustable anode...

Legg, James Derek

2012-06-07T23:59:59.000Z

255

Entanglement Generation by Electric Field Background  

E-Print Network (OSTI)

The quantum vacuum is unstable under the influence of an external electric field and decays into pairs of charged particles, a process which is known as the Schwinger pair production. We propose and demonstrate that this electric field can generate entanglement. Using the Schwinger pair production for constant and pulsed electric fields, we study entanglement for scalar particles with zero spins and Dirac fermions. One can observe the variation of the entanglement produced for bosonic and fermionic modes with respect to different parameters.

Ebadi, Zahra

2014-01-01T23:59:59.000Z

256

Casimir Pistons for Massive Scalar Fields  

E-Print Network (OSTI)

The Casimir force on two-dimensional pistons for massive scalar fields with both Dirichlet and hybrid boundary conditions is computed. The physical result is obtained by making use of generalized $\\zeta$-function regularization technique. The influence of the mass and the position of the piston in the force is studied graphically. The Casimir force for massive scalar field is compared to that for massless scalar field.

Xiang-hua Zhai; Yan-yan Zhang; Xin-zhou Li

2008-08-01T23:59:59.000Z

257

Evaluation of heliostat field/receiver configurations  

SciTech Connect

This report evaluates and compares north heliostat field/cavity receiver configurations and surround heliostat field/external receiver configurations. The receiver coolants are molten nitrate salts and liquid sodium. Both field/receiver configurations use molten salt thermal storage; the sodium receiver is thermally connected to thermal storage by a sodium-to-salt heat exchanger. The heliostat filed size is fixed at 1,000,000 square meters of reflective area, and the delivered molten salt temperature is fixed at 566/sup 0/C. The delivered thermal power varies from 500 to 600 MW/sub t/, depending on the overall system efficiency. The generic north heliostat field/cavity receiver configurations were found to be 6 to 10 percent efficient than a generic surround field/external receiver configuration. There was little or no difference found in the transient performance of a molten salt receiver compared to a sodium receiver connected to a sodium-to-salt heat exchanger. Four configurations were of particular interest: (1) a north heliostat field/single cavity molten salt receiver, (2) a surround heliostat field/external cylinder molten salt receiver, (3) a surround heliostat field/external cylinder liquid sodium receiver, and (4) a north heliostat field/single cavity liquid sodium receiver. It was found that the surround field/liquid sodium external receiver configuration may provide energy at a 14 percent lower levelized energy cost than a north field/molten salt cavity receiver configuration. However, the cost advantage of the surround field/liquid sodium external receiver is not conclusive because of uncertainties in system component costs.

Faas, S.E.; Winters, W.S.

1986-03-01T23:59:59.000Z

258

Local gauge invariance of free fields  

E-Print Network (OSTI)

It is noted that, in contrast to widespread believes, free fields do not only allow for global, but also for local gauge invariance.

Bernd A. Berg

2012-06-06T23:59:59.000Z

259

Sensor for detecting changes in magnetic fields  

DOE Patents (OSTI)

A sensor for detecting changes in the magnetic field of the equilibrium-field coil of a Tokamak plasma device comprises a pair of bifilar wires disposed circumferentially, one inside and one outside the equilibrium-field coil. Each is shorted at one end. The difference between the voltages detected at the other ends of the bifilar wires provides a measure of changing flux in the equilibrium-field coil. This difference can be used to detect faults in the coil in time to take action to protect the coil.

Praeg, Walter F. (Palos Park, IL)

1981-01-01T23:59:59.000Z

260

Optimization of offshore natural gas field development.  

E-Print Network (OSTI)

?? In this thesis the target is to find the optimal development solution of an offshore natural gas field. Natural gas is increasing in importance (more)

Johansen, Gaute Rannem

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Magnetic Field Generation by Detonation Waves  

Science Journals Connector (OSTI)

A simple model is given for the spontaneous magnetic field generation by a detonation wave in condensed matter. The field is shown to arise from the noncollinearity of the thermal and electron density gradients near a medium boundary at the detonation shock front. The model allows calculation of approximate values for the field strength at the front and penetration ahead of the detonation wave. For typical explosive media interfaced by air the magnetic field is predicted to lie in the range 0.1 to 15 G.

Michael J. Frankel and Edward T. Toton

1979-12-10T23:59:59.000Z

262

Background field method as a canonical transformation  

Science Journals Connector (OSTI)

We construct explicitly the canonical transformation which controls the full dependence (local and nonlocal) of the vertex functional of a Yang-Mills theory on a background field. After showing that the canonical transformation found is nothing but a direct field-theoretic generalization of the Lie transform of classical analytical mechanics, we comment on a number of possible applications, and, in particular, the nonperturbative implementation of the background field method on the lattice, the background field formulation of the two-particle irreducible formalism, and, finally, the formulation of the Schwinger-Dyson series in the presence of topologically nontrivial configurations.

D. Binosi and A. Quadri

2012-06-21T23:59:59.000Z

263

Buildings Performance Database Recommended Data Fields  

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

Buildings Performance Database Recommended Data Fields, from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy.

264

Carlsbad Field Office (CBFO) Fellowship Program  

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

Applicants About Appointment Mentors FAQs About ORAU Contact Welcome to the Carlsbad Field Office (CBFO) Fellowship Program The U.S. Department of Energy (DOE) CBFO...

265

WIPP - Carlsbad Field Office Tribal Program  

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

Carlsbad Field Office Tribal Program Shipments to the Waste Isolation Pilot Plant (WIPP) travel through 10 Native American Reservations (among six states) along the transportation...

266

Symmetries and Renormalization of Noncommutative Field Theory  

SciTech Connect

An overview of recent developments in the renormalization and in the implementation of spacetime symmetries of noncommutative field theory is presented, and argued to be intimately related.

Szabo, Richard J. [Department of Mathematics, Heriot-Watt University, Colin Maclaurin Building, Riccarton, Edinburgh EH14 4AS (United Kingdom); Maxwell Institute for Mathematical Sciences, Heriot-Watt University, Colin Maclaurin Building, Riccarton, Edinburgh EH14 4AS (United Kingdom)

2007-06-19T23:59:59.000Z

267

Warm inflation in presence of magnetic fields  

SciTech Connect

We present preliminary results on the possible effects that primordial magnetic fields can have for a warm inflation scenario, based on global supersymmetry, with a new-inflation-type potential. This work is motivated by two considerations: first, magnetic fields seem to be present in the universe on all scales which rises de possibility that they could also permeate the early universe; second, the recent emergence of inflationary models where the inflaton is not assumed to be isolated but instead it is taken as an interacting field, even during the inflationary expansion. The effects of magnetic fields are included resorting to Schwinger's proper time method.

Piccinelli, Gabriella [Centro Tecnolgico, FES Aragn, Universidad Nacional Autnoma de Mxico, Avenida Rancho Seco S/N, Bosques de Aragn, Nezahualcyotl, Estado de Mxico 57130 (Mexico)] [Centro Tecnolgico, FES Aragn, Universidad Nacional Autnoma de Mxico, Avenida Rancho Seco S/N, Bosques de Aragn, Nezahualcyotl, Estado de Mxico 57130 (Mexico); Snchez, ngel [Department of Physics, University of Texas at El Paso, El Paso, Texas 79968 (United States)] [Department of Physics, University of Texas at El Paso, El Paso, Texas 79968 (United States); Ayala, Alejandro; Mizher, Ana Julia [Instituto de Ciencias Nucleares, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-543, Mxico Distrito Federal 04510 (Mexico)] [Instituto de Ciencias Nucleares, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-543, Mxico Distrito Federal 04510 (Mexico)

2013-07-23T23:59:59.000Z

268

National High Magnetic Field Laboratory - Publications  

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

Lett. Physica B Physica C Physica E Polymer Polymer J. Proc. Physical Phenomena at High Magnetic Fields - IV Protein Science PROTEINS: Structure, Function and Genetics Rapid...

269

BLM Ukiah Field Office | Open Energy Information  

Open Energy Info (EERE)

search Name: BLM Ukiah Field Office Address: 2550 North State Street Place: Ukiah, CA Zip: 95482 Phone Number: (707) 468-4000 Website: http:www.blm.govcastenfo...

270

Geometric Hamilton-Jacobi Field Theory  

E-Print Network (OSTI)

I briefly review my proposal about how to extend the geometric Hamilton-Jacobi theory to higher derivative field theories on fiber bundles.

Luca Vitagliano

2011-09-08T23:59:59.000Z

271

Magnetic Fields in Clusters of Galaxies  

E-Print Network (OSTI)

A brief overview about our knowledge on galaxy cluster magnetic fields is provided. Emphasize is given to the mutual dependence of our knowledge on relativistic particles in galaxy clusters and the magnetic field strength. Furthermore, we describe efforts to measure magnetic field strengths, characteristic length-scales, and power-spectra with reliable accuracy. An interpretation of these results in terms of non-helical dynamo theory is given. If this interpretation turns out to be correct, the understanding of cluster magnetic fields is directly connected to our understanding of intra-cluster turbulence.

Torsten A. Ensslin; Corina Vogt; Christoph Pfrommer

2005-01-17T23:59:59.000Z

272

Path integral quantization of parametrised field theory  

E-Print Network (OSTI)

Free scalar field theory on a flat spacetime can be cast into a generally covariant form known as parametrised field theory in which the action is a functional of the scalar field as well as the embedding variables which describe arbitrary, in general curved, foliations of the flat spacetime. We construct the path integral quantization of parametrised field theory in order to analyse issues at the interface of quantum field theory and general covariance in a path integral context. We show that the measure in the Lorentzian path integral is non-trivial and is the analog of the Fradkin- Vilkovisky measure for quantum gravity. We construct Euclidean functional integrals in the generally covariant setting of parametrised field theory using key ideas of Schleich and show that our constructions imply the existence of non-standard `Wick rotations' of the standard free scalar field 2 point function. We develop a framework to study the problem of time through computations of scalar field 2 point functions. We illustrate our ideas through explicit computation for a time independent 1+1 dimensional foliation. Although the problem of time seems to be absent in this simple example, the general case is still open. We discuss our results in the contexts of the path integral formulation of quantum gravity and the canonical quantization of parametrised field theory.

Madhavan Varadarajan

2004-04-06T23:59:59.000Z

273

Condenser for illuminating a ring field  

DOE Patents (OSTI)

A series of segments of a parent aspheric mirror having one foci at at a si-point source of radiation and the other foci at the radius of a ring field have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ring field camera about one of the beams and fall onto the ring field radius as a coincident image as an arc of the ring field.

Sweatt, William C. (Albuquerque, NM)

1994-01-01T23:59:59.000Z

274

Sensor for detecting changes in magnetic fields  

DOE Patents (OSTI)

A sensor is described for detecting changes in the magnetic field of the equilibrium-field coil of a Tokamak plasma device that comprises a pair of bifilar wires disposed circumferentially, one inside and one outside the equilibrium-field coil. Each is shorted at one end. The difference between the voltages detected at the other ends of the bifilar wires provides a measure of changing flux in the equilibrium-field coil. This difference can be used to detect faults in the coil in time to take action to protect the coil.

Praeg, W.F.

1980-02-26T23:59:59.000Z

275

Scattering by an electromagnetic radiation field  

E-Print Network (OSTI)

Motion of test particles in the gravitational field associated with an electromagnetic plane wave is investigated. The interaction with the radiation field is modeled by a force term {\\it \\`a la} Poynting-Robertson entering the equations of motion given by the 4-momentum density of radiation observed in the particle's rest frame with a multiplicative constant factor expressing the strength of the interaction itself. Explicit analytical solutions are obtained. Scattering of fields by the electromagnetic wave, i.e., scalar (spin 0), massless spin $\\frac12$ and electromagnetic (spin 1) fields, is studied too.

Donato Bini; Andrea Geralico

2014-08-21T23:59:59.000Z

276

Condenser for illuminating a ring field  

DOE Patents (OSTI)

A series of segments of a parent aspheric mirror having one foci at a point source of radiation and the other foci at the radius of a ring field have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ring field camera about one of the beams and fall onto the ring field radius as a coincident image as an arc of the ring field. 5 figs.

Sweatt, W.C.

1994-11-01T23:59:59.000Z

277

Occupational Health Manager PIA, Carlsbad Field Office | Department...  

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

Health Manager PIA, Carlsbad Field Office Occupational Health Manager PIA, Carlsbad Field Office Occupational Health Manager PIA, Carlsbad Field Office Occupational Health Manager...

278

Records Management Field Officer (RMFO) | Department of Energy  

Office of Environmental Management (EM)

Field Officer (RMFO) Records Management Field Officer (RMFO) Records Management Field Officer (RMFO) RMFO Contact LIst - by Name RMFO Contact List - by Program More Documents &...

279

Ising Model with a Transverse Field  

Science Journals Connector (OSTI)

The phase transition in the Ising model has been studied as a function of an applied transverse field, by Green's function and series-expansion methods. The critical indices are probably independent of the applied field except at T=0 where they appear to be related to those of the Ising model in one higher dimension.

R. J. Elliott; P. Pfeuty; C. Wood

1970-08-17T23:59:59.000Z

280

Seeking Mountains Field Trip Jasper National Park  

E-Print Network (OSTI)

Seeking Mountains Field Trip Jasper National Park December 14-15, 2012 Jasper National Park of Jasper is one of only four communities located in a Canadian national park. We have arranged a special. The field trip includes as follows: a welcome reception at the Jasper Yellowhead Museum and Archives

MacMillan, Andrew

Note: This page contains sample records for the topic "abu safah field" 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

D-branes in overcritical electric fields  

Science Journals Connector (OSTI)

We collect some arguments for treating a D-brane with overcritical electric field as a well-posed initial condition for a D-brane decay. Within the field theoretical toy model of Minahan and Zwiebach we give an estimate for the condensates of the related infinite tower of tachyonic excitations.

Harald Dorn; Mario Salizzoni; Alessandro Torrielli

2006-01-25T23:59:59.000Z

282

Free energy in thermo field dynamics  

Science Journals Connector (OSTI)

A formula to obtain the free energy within the framework of thermo field dynamics (a real-time quantum field theory at finite temperature) is presented. The relation to the Matsubara method is discussed. Examples of a perturbation calculation are presented for the ?4 model up to the two-loop order and are compared with the corresponding result obtained in the Matsubara formalism.

H. Matsumoto; Y. Nakano; H. Umezawa

1985-03-15T23:59:59.000Z

283

Magnetic field outflows from active galactic nuclei  

Science Journals Connector (OSTI)

We examine several models of injecting magnetic fields into clusters of galaxies from active galactic nuclei, which are the powerful outflows associated with supermassive black holes in the centers of clusters. Shown are magnetic field lines after six ... Keywords: scientific visualization

David Pugmire; Paul Sutter; Paul Ricker; Hsiang-Yi (Karen) Yang; George Foreman

2011-11-01T23:59:59.000Z

284

Local magnetic fields in disordered metals  

Science Journals Connector (OSTI)

We show that in a disordered metal the local magnetic fields generated by the magnetic-field-induced orbital-electron currents will fluctuate strongly in magnitude and direction. We argue that this phenomenon should be reflected by a noticeable inhomogeneous broadening of NMR lines and analyze its dependence on system geometry and temperature.

R. A. Serota and A. Yu. Zyuzin

1993-06-01T23:59:59.000Z

285

Vortex lines in films: Fields and interactions  

Science Journals Connector (OSTI)

General expressions are given for the magnetic field and energy of arbitrary arrangements of straight and curved vortices in an anisotropic superconductor film of finite thickness within anisotropic London theory. As examples we consider the magnetic field and interaction of straight perpendicular vortex lines in films of finite thickness.

Gilson Carneiro and Ernst Helmut Brandt

2000-03-01T23:59:59.000Z

286

Algebras without Involution and Quantum Field Theories  

E-Print Network (OSTI)

Explicit realizations of quantum field theory (QFT) are admitted by a revision to the Wightman axioms for the vacuum expectation values (VEV) of fields. The technical development of QFT is expanded beyond positive functionals on *-algebras while the physically motivated properties: Poincare covariance; positive energy; microcausality; and a Hilbert space realization of states, are preserved.

Glenn Eric Johnson

2014-10-01T23:59:59.000Z

287

Hydrogen atom moving across a magnetic field  

Science Journals Connector (OSTI)

A hydrogen atom moving across a magnetic field is considered in a wide region of magnitudes of magnetic field and atom momentum. We solve the Schrdinger equation of the system numerically using an imaginary time method and find wave functions of the lowest states of atom. We calculate the energy and the mean electron-nucleus separation as a function of atom momentum and magnetic field. All the results obtained could be summarized as a phase diagram on the atom-momentum magnetic-field plane. There are transformations of wave-function structure at critical values of atom momentum and magnetic field that result in a specific behavior of dependencies of energy and mean interparticle separation on the atom momentum P. We discuss a transition from the Zeeman regime to the high magnetic field regime. A qualitative analysis of the complicated behavior of wave functions vs P based on the effective potential examination is given. We analyze a sharp transition at the critical momentum from a Coulomb-type state polarized due to atom motion to a strongly decentered (Landau-type) state at low magnetic fields. A crossover occurring at intermediate magnetic fields is also studied.

Yu. E. Lozovik and S. Yu. Volkov

2004-08-23T23:59:59.000Z

288

Parametric instability in scalar gravitational fields  

E-Print Network (OSTI)

We present a brief review on a new dynamical mechanism for a strong field effect in scalar tensor theory. Starting with a summary of the essential features of the theory and subsequent work by several authors, we analytically investigate the parametric excitation of a scalar gravitational field in a spherically symmetric radially pulsating neutron star.

T. B. Davies; C. H. -T. Wang; R. Bingham; J. T. Mendonca

2013-09-17T23:59:59.000Z

289

On Nonadiabatic Processes in Inhomogeneous Fields  

Science Journals Connector (OSTI)

The problem of calculating nonadiabatic transition probabilities is considered. It is shown that the general Gttinger equations are incorrect and lead to erroneous results in any case other than that of the rotating magnetic field, which he considered. The corrected equations are applied in the calculation of the transition probabilities between the various magnetic states of a field precessing with constant angular velocity.

Julian Schwinger

1937-04-15T23:59:59.000Z

290

Non-Abelian Gauge Fields. Commutation Relations  

Science Journals Connector (OSTI)

The question is raised for non-Abelian vector gauge fields whether gauge invariance necessarily implies a massless physical particle. As a preliminary to studying this problem, the action principle is used to discover the independent dynamical variables of such gauge fields and construct their commutation relations.

Julian Schwinger

1962-02-01T23:59:59.000Z

291

Golden Field Office | Department of Energy  

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

Golden Field Office Golden Field Office Golden Field Office The Golden Field Office was designated a Department of Energy field office in December 1992 to provide EERE with enhanced capability to develop and commercialize renewable energy and energy-efficient technologies. What We Do Golden's mission is to support DOE's Office of Energy Efficiency and Renewable Energy (EERE) as its Business Service Center by awarding grants and contracts for clean energy projects, facilitating research and development (R&D) partnerships to support those technologies, and overseeing the National Renewable Energy Laboratory (NREL), the only national lab solely dedicated to researching and developing renewable energy and energy efficiency technologies. Federal and contractor staff award and manage grants. Staff members also

292

Field Test Best Practices (FTBP) Update  

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

Field Test Best Practices (FTBP) Update: Field Test Best Practices (FTBP) Update: It's here! And we need you! Lieko Earle Dane Christensen Bethany Sparn Building America Stakeholder Meeting 2012-03-02 NATIONAL RENEWABLE ENERGY LABORATORY Identified Field Testing Needs 2 * Difficult to find good general guidelines * Difficult to find examples of good field test plans * Difficult to find information on instrumentation options * No easily-accessible central repository for best practices knowledge * Field tests were taking longer and costing more $$ than initially estimated * We keep reinventing the wheel * Start from scratch each time we write a data-logger program? * Repeat each other's mistakes? NATIONAL RENEWABLE ENERGY LABORATORY What is the FTBP Resource?

293

Categorical Exclusion Determinations: Strategic Petroleum Reserve Field  

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

Strategic Petroleum Reserve Strategic Petroleum Reserve Field Office Categorical Exclusion Determinations: Strategic Petroleum Reserve Field Office Categorical Exclusion Determinations issued by Strategic Petroleum Reserve Field Office. DOCUMENTS AVAILABLE FOR DOWNLOAD August 22, 2013 CX-010876: Categorical Exclusion Determination Smart and Calibrated Pig Surveys of Strategic Petroleum Reserve Raw Water/Crude Oil Pipelines CX(s) Applied: B1.3 Date: 08/22/2013 Location(s): Texas, Louisiana Offices(s): Strategic Petroleum Reserve Field Office August 19, 2013 CX-010877: Categorical Exclusion Determination Clean and Inspect West Hackberry T-15 Brine Tank CX(s) Applied: B1.3 Date: 08/19/2013 Location(s): Louisiana Offices(s): Strategic Petroleum Reserve Field Office August 8, 2013 CX-010878: Categorical Exclusion Determination

294

ASYMMETRIC DIFFUSION OF MAGNETIC FIELD LINES  

SciTech Connect

Stochasticity of magnetic field lines is important for particle transport properties. Magnetic field lines separate faster than diffusively in turbulent plasma, which is called superdiffusion. We discovered that this superdiffusion is pronouncedly asymmetric, so that the separation of field lines along the magnetic field direction is different from the separation in the opposite direction. While the symmetry of the flow is broken by the so-called imbalance or cross-helicity, the difference between forward and backward diffusion is not directly due to imbalance, but a non-trivial consequence of both imbalance and non-reversibility of turbulence. The asymmetric diffusion perpendicular to the mean magnetic field entails a variety of new physical phenomena, such as the production of parallel particle streaming in the presence of perpendicular particle gradients. Such streaming and associated instabilities could be significant for particle transport in laboratory, space, and astrophysical plasmas.

Beresnyak, Andrey [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2013-04-20T23:59:59.000Z

295

Magnetic Field Effects on Copper Electrolysis  

Science Journals Connector (OSTI)

Four different magnets were used to supply a static magnetic field to the cell during the various electrochemical experiments. ... A Halbach cylinder with a fixed static field of 0.5 T in a 54 mm bore or a 48 mm bore Multimag38 permanent magnet system capable of delivering variable fields in the range 0?1.0 T in any direction transverse to the bore was used for the lower field experiments. ... The Lorentz force, F?L, arises from the motion of charge across lines of magnetic flux, whereas the electrokinetic force, F?E, results from the stress on the charge carriers in the diffuse double layer under the influence of a nonelectrostatic field, E??, parallel to the electrode surface. ...

G. Hinds; F. E. Spada; J. M. D. Coey; T. R. N Mhochin; M. E. G. Lyons

2001-09-12T23:59:59.000Z

296

Field Emission Measurements from Niobium Electrodes  

SciTech Connect

Increasing the operating voltage of a DC high voltage photogun serves to minimize space charge induced emittance growth and thereby preserve electron beam brightness, however, field emission from the photogun cathode electrode can pose significant problems: constant low level field emission degrades vacuum via electron stimulated desorption which in turn reduces photocathode yield through chemical poisoning and/or ion bombardment and high levels of field emission can damage the ceramic insulator. Niobium electrodes (single crystal, large grain and fine grain) were characterized using a DC high voltage field emission test stand at maximum voltage -225kV and electric field gradient > 10MV/m. Niobium electrodes appear to be superior to diamond-paste polished stainless steel electrodes.

M. BastaniNejad, P.A. Adderley, J. Clark, S. Covert, J. Hansknecht, C. Hernandez-Garcia, R. Mammei, M. Poelker

2011-03-01T23:59:59.000Z

297

Noninvasive valve monitor using alternating electromagnetic field  

DOE Patents (OSTI)

One or more electrical coils are carefully located on the outside of a valve body. An alternating current passing through the coil(s) results in an alternating electromagnetic field being transmitted into the valve body and valve internals. The electromagnetic field varies in intensity and polarity in the valve. As the position of a valve internal part is changed, the electromagnetic field throughout the valve body and its internals is altered. A passive receiver coil carefully located on the outside of the valve body detects the intensity of the electromagnetic field at that location as an induced electrical voltage in the coil. With the change in position of the valve internal part, there is a corresponding change in the induced voltage as a result of the alteration in the alternating electromagnetic field at that location. Changes in the voltage provide an indication of the position and motion of valve internals.

Eissenberg, David M. (Oak Ridge, TN); Haynes, Howard D. (Knoxville, TN); Casada, Donald A. (Knoxville, TN)

1993-01-01T23:59:59.000Z

298

The Theory of Quantized Fields. IV  

Science Journals Connector (OSTI)

The principal development in this paper is the extension of the eigenvalue-eigenvector concept to complete sets of anticommuting operators. With the aid of this formalism we construct a transformation function for the Dirac field, as perturbed by an external source. This transformation function is enlarged to describe phase transformations and, when applied to the isolated Dirac field, yields the charge and energy-momentum eigenvalues and eigenfunctions. The transformation function describing the system in the presence of the source is then used as a generating function to construct the matrices of all ordered products of the field operators, for the isolated Dirac field. The matrices in the occupation number representation are exhibited with a classification that effectively employs a time-reversed description for negative frequency modes. The last section supplements III by constructing the matrices of all ordered products of the potential vector, for the isolated electromagnetic field.

Julian Schwinger

1953-12-01T23:59:59.000Z

299

Propagation of MHD waves in a plasma in a sheared magnetic field with straight field lines  

Science Journals Connector (OSTI)

The propagation of MHD plasma waves in a sheared magnetic field is investigated. The problem is solved using ... is inhomogeneous in one direction, and the magnetic field lines are straight. The waves are assumed...

P. N. Mager; D. Yu. Klimushkin

2002-04-01T23:59:59.000Z

300

Constructing the Coronal Magnetic Field By Correlating Parameterized Magnetic Field Lines With Observed Coronal Plasma Structures  

Science Journals Connector (OSTI)

A method is presented for constructing the coronal magnetic field from photospheric magnetograms and observed coronal loops. A set of magnetic field lines generated from magnetogram data is parameterized and ... ...

G. Allen Gary; David Alexander

1999-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

The National High Magnetic Field Laboratory: Condensed Matter Science in Continuous Magnetic Fields  

Science Journals Connector (OSTI)

The National High Magnetic Field Laboratory (NHMFL) operates three facilities ... Tallahassee, Florida, the ultra-low-temperature high-magnetic-field facilities are located at the University ... scientific achiev...

M. D. Bird; J. E. Crow; P. Schlottmann

2003-10-01T23:59:59.000Z

302

Generalized second law of thermodynamics in presence of interacting tachyonic field and scalar(phantom)field  

E-Print Network (OSTI)

In the present work, we have considered tachyonic field, phantom field and scalar field in both interacting and non-interacting situations and investigated the validity of the generalized second law of thermodynamics in a flat FRW universe. We found that in all cases, excepting the phantom field dominated universe, the derivative of the entropy is remaining at negative level and is increasing with the decrease in the redshift.

Surajit Chattopadhyay; Ujjal Debnath

2010-12-08T23:59:59.000Z

303

General Multiobjective Force Field Optimization Framework, with Application to Reactive Force Fields for Silicon Carbide  

E-Print Network (OSTI)

Fields for Silicon Carbide Andres Jaramillo-Botero,* Saber Naserifar, and William A. Goddard, III: (1) the ReaxFF reactive force field for modeling the adiabatic reactive dynamics of silicon carbide specific force field parameters for tripod metal templates, tripodMO(CO)3, using the root mean square

Goddard III, William A.

304

Observation of field-reversed configurations with spheromak magnetic field profiles  

Science Journals Connector (OSTI)

We report the first observation of field-reversed configurations with nearly force-free magnetic fields in the central region of the compact toroid. The field profiles and flux ratios suggest that some form of relaxation phenomenon is occurring in this high-? kinetic regime. The magnetic helicity of the translating plasmas arises from axial asymmetry, possibly through end-shorting Alfvn waves.

M. Tuszewski and B. L. Wright

1989-11-13T23:59:59.000Z

305

The Magnetic Field in the Solar Atmosphere  

E-Print Network (OSTI)

This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere. It is also responsible for all solar activity in its numerous manifestations. Thus, dynamic phenomena such as coronal mass ejections and flares are magnetically driven. In addition, the field also plays a crucial role in heating the solar chromosphere and corona as well as in accelerating the solar wind. Our main emphasis is the magnetic field in the upper solar atmosphere so that photospheric and chromospheric magnetic structures are mainly discussed where relevant for higher solar layers. Also, the discussion of the solar atmosphere and activity is limited to those topics of direct relevance to the magnetic field. After giving a brief overview about the solar magnetic field in general and its global structure, we discuss in more detail the magnetic field in active regions, the quie...

Wiegelmann, Thomas; Solanki, Sami K

2014-01-01T23:59:59.000Z

306

Property:ManagingFieldOffice | Open Energy Information  

Open Energy Info (EERE)

ManagingFieldOffice ManagingFieldOffice Jump to: navigation, search Property Name ManagingFieldOffice Property Type Page Pages using the property "ManagingFieldOffice" Showing 25 pages using this property. (previous 25) (next 25) B BLM-NV-WN-ES-08-01-1310, NV-020-08-01 + BLM Humboldt River Field Office + C CA-017-05-051 + BLM Bishop Field Office + CA-170-02-15 + BLM Bishop Field Office + D DOE-EA-1116 + DOE Golden Field Office + DOE-EA-1621 + DOE Golden Field Office + DOE-EA-1733 + DOE Golden Field Office + DOE-EA-1759 + DOE Golden Field Office + DOE-EA-1849 + DOE Golden Field Office + DOI-BLM-CA-C050-2009-0005-EA + BLM Ukiah Field Office + DOI-BLM-CA-ES-2013-002+1793-EIS + BLM Bishop Field Office + DOI-BLM-ID-110-2009-3825-CE + BLM Four Rivers Field Office +

307

Computing nonlinear force free coronal magnetic fields  

E-Print Network (OSTI)

Knowledge of the structure of the coronal magnetic field is important for our understanding of many solar activity phenomena, e.g. flares and CMEs. However, the direct measurement of coronal magnetic fields is not possible with present methods, and therefore the coronal field has to be extrapolated from photospheric measurements. Due to the low plasma beta the coronal magnetic field can usually be assumed to be approximately force free, with electric currents flowing along the magnetic field lines. There are both observational and theoretical reasons which suggest that at least prior to an eruption the coronal magnetic field is in a nonlinear force free state. Unfortunately the computation of nonlinear force free fields is way more difficult than potential or linear force free fields and analytic solutions are not generally available. We discuss several methods which have been proposed to compute nonlinear force free fields and focus particularly on an optimization method which has been suggested recently. We compare the numerical performance of a newly developed numerical code based on the optimization method with the performance of another code based on an MHD relaxation method if both codes are applied to the reconstruction of a semi-analytic nonlinear force-free solution. The optimization method has also been tested for cases where we add random noise to the perfect boundary conditions of the analytic solution, in this way mimicking the more realistic case where the boundary conditions are given by vector magnetogram data. We find that the convergence properties of the optimization method are affected by adding noise to the boundary data and we discuss possibilities to overcome this difficulty.

T. Wiegelmann; T. Neukirch

2008-01-21T23:59:59.000Z

308

Security Sciences Field Lab (SSFL) | ORNL  

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

Nuclear Science Nuclear Science Research Areas Research Highlights Facilities and Capabilities Educational Outreach Publications and Reports News and Awards Nuclear Science Home | Science & Discovery | Nuclear Science | Facilities and Capabilities SHARE Security Sciences Field Laboratory May 30, 2013 The Security Sciences Field Laboratory (SSFL) is designed to support testing and evaluation of a wide range of intrusion detection, assessment, surveillance, and peripheral physical security equipment including: sensors; cameras; alarm communication and display; power generation; access control; unattended stand-alone, remote communication; unmanned aerial and activated delay systems. At the heart of SSFL is a simulated border region of varied terrain such as open grassy fields, hilly wooded areas, sand

309

Hyperon bulk viscosity in strong magnetic fields  

SciTech Connect

We study the bulk viscosity of neutron star matter including {lambda} hyperons in the presence of quantizing magnetic fields. Relaxation time and bulk viscosity due to both the nonleptonic weak process involving {lambda} hyperons and direct Urca processes are calculated here. In the presence of a strong magnetic field of 10{sup 17} G, the hyperon bulk viscosity coefficient is reduced, whereas bulk viscosity coefficients due to direct Urca processes are enhanced compared with their field free cases when many Landau levels are populated by protons, electrons, and muons.

Sinha, Monika; Bandyopadhyay, Debades [Theory Division and Centre for Astroparticle Physics, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)

2009-06-15T23:59:59.000Z

310

Casimir Effect of Scalar Massive Field  

E-Print Network (OSTI)

The energy momentum tensor is used to introduce the Casimir force of the massive scalar field acting on a nonpenetrating surface. This expression can be used to evaluate the vacuum force by employing the appropriate field operators. To simplify our formalism we also relates the vacuum force expression to the imaginary part of the Green function via the fluctuation dissipation theorem and Kubo formula. This allows one to evaluate the vacuum force without resorting to the process of field quantization. These two approaches are used to calculate the attractive force between two nonpenetrating plates. Special attention is paid to the generalization of the formalism to D + 1 space-time dimensions.

Sonia Mobassem

2014-03-03T23:59:59.000Z

311

High concentration ferronematics in low magnetic fields  

E-Print Network (OSTI)

We investigated experimentally the magneto-optical and dielectric properties of magnetic-nanoparticle-doped nematic liquid crystals (ferronematics). Our studies focus on the effect of the very small orienting bias magnetic field $B_{bias}$, and that of the nematic director pretilt at the boundary surfaces in our systems sensitive to low magnetic fields. Based on the results we assert that $B_{bias}$ is not necessarily required for a detectable response to low magnetic fields, and that the initial pretilt, as well as the aggregation of the nanoparticles play an important (though not yet explored enough) role.

T. Tth-Katona; P. Salamon; N. ber; N. Tomaovi?ov; Z. Mitrov; P. Kop?ansk

2014-09-05T23:59:59.000Z

312

Magnetic fields from second-order interactions  

E-Print Network (OSTI)

It is well known that when two types of perturbations interact in cosmological perturbation theory, the interaction may lead to the generation of a third type. In this article we discuss the generation of magnetic fields from such interactions. We determine conditions under which the interaction of a first-order magnetic field with a first-order scalar-or vector-, or tensor-perturbations would lead to the generation of second order magnetic field. The analysis is done in a covariant-index-free approach, but could be done in the standard covariant indexed-approach.

Bob Osano

2014-03-21T23:59:59.000Z

313

Wide field imaging of distant clusters  

E-Print Network (OSTI)

Wide field imaging is key to understanding the build-up of distant clusters and their galaxy population. By focusing on the so far unexplored outskirts of clusters, where infalling galaxies first hit the cluster potential and the hot intracluster medium, we can help separate cosmological field galaxy evolution from that driven by environment. I present a selection of recent advancements in this area, with particular emphasis on Hubble Space Telescope wide field imaging, for its superior capability to deliver galaxy morphologies and precise shear maps of distant clusters.

T. Treu

2004-08-05T23:59:59.000Z

314

Minimizing casing corrosion in Kuwait oil fields  

SciTech Connect

Corrosion in production strings is a well known problem in Kuwait oil fields. Failure to remedy the affected wells results mainly in undesirable dump flooding of the oil reservoirs, or in oil seepage and hydrocarbon contamination in shallow water bearing strata. Any of these situations (unless properly handled) leads to a disastrous waste of oil resources. This study discusses casing leaks in Kuwait oil fields, the nature of the formations opposite the leaks and their contained fluids, and the field measures that can be adopted in order to avoid casing leak problems.

Agiza, M.N.; Awar, S.A.

1983-03-01T23:59:59.000Z

315

Circumstellar Magnetic Field Diagnostics from Line Polarization  

E-Print Network (OSTI)

Given that dynamically significant magnetic fields in at least some massive stars have now been measured, our contribution addresses the question, to what extent can fields be directly detected in circumstellar gas? The question speaks directly to the very interesting topic of line-driving physics coupled with magnetized plasmas, and how this coupling produces structure in the wind flow. We focus our attention on weak-field diagnostics. These come in two main types: the Hanle effect, which pertains to coherence effects for linear polarization from line scattering, and the weak longitudinal Zeeman effect, which pertains to circular polarization in lines.

Richard Ignace; Kenneth G. Gayley

2007-08-14T23:59:59.000Z

316

Ambipolar Diffusion in a Magnetic Field  

Science Journals Connector (OSTI)

Diffusion of ions in a plasma across a magnetic field is shown to be not ambipolar in character in most arc experiments. Owing to the highly anisotropic conductivity of the medium, the ions diffuse across the field at their own intrinsic rate. Space-charge neutralization is maintained by slight adjustments of the currents in the direction of the magnetic field lines. The discrepancy between theory and experiment noted by Bohm is thus resolved and no additional mechanisms, such as plasma oscillations, need be postulated.

Albert Simon

1955-04-15T23:59:59.000Z

317

Green Functions of Relativistic Field Equations  

E-Print Network (OSTI)

In this paper, we restudy the Green function expressions of field equations. We derive the explicit form of the Green functions for the Klein-Gordon equation and Dirac equation, and then estimate the decay rate of the solution to the linear equations. The main motivation of this paper is to show that: (1). The formal solutions of field equations expressed by Green function can be elevated as a postulate for unified field theory. (2). The inescapable decay of the solution of linear equations implies that the whole theory of the matter world should include nonlinear interaction.

Ying-Qiu Gu

2006-12-20T23:59:59.000Z

318

Time independent mean-field theory  

SciTech Connect

The physical and theoretical motivations for the time-dependent mean-field theory are presented, and the successes and limitations of the time-dependent Hartree-Fock initial-vaue problem are reviewed. New theoretical developments are described in the treatment of two-body correlations and the formulation of a quantum mean-field theory of large-amplitude collective motion and tunneling decay. Finally, the mean-field theory is used to obtain new insights into the phenomenon of pion condensation in finite nuclei. 18 figures.

Negele, J.W.

1980-02-01T23:59:59.000Z

319

Scanning tip microwave near field microscope  

DOE Patents (OSTI)

A microwave near field microscope has a novel microwave probe structure wherein the probing field of evanescent radiation is emitted from a sharpened metal tip instead of an aperture or gap. This sharpened tip, which is electrically and mechanically connected to a central electrode, extends through and beyond an aperture in an endwall of a microwave resonating device such as a microwave cavity resonator or a microwave stripline resonator. Since the field intensity at the tip increases as the tip sharpens, the total energy which is radiated from the tip and absorbed by the sample increases as the tip sharpens. The result is improved spatial resolution without sacrificing sensitivity.

Xiang, Xiao-Dong (Alameda, CA); Schultz, Peter G. (Oakland, CA); Wei, Tao (Albany, CA)

1998-01-01T23:59:59.000Z

320

Newtonian Collapse of Scalar Field Dark Matter  

E-Print Network (OSTI)

In this letter, we develop a Newtonian approach to the collapse of galaxy fluctuations of scalar field dark matter under initial conditions inferred from simple assumptions. The full relativistic system, the so called Einstein-Klein-Gordon, is reduced to the Schr\\"odinger-Newton one in the weak field limit. The scaling symmetries of the SN equations are exploited to track the non-linear collapse of single scalar matter fluctuations. The results can be applied to both real and complex scalar fields.

F. Siddhartha Guzman; L. Arturo Urena-Lopez

2003-03-19T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Nuclear magnetic resonances in weak fields  

E-Print Network (OSTI)

first choax@ation of nuclear resonances in weak f le). de was sade by k 0, S~ in fiel4u of 6 and lg gauss using a sanple siue of. 1 liter, The nagnetic fields were produced in a solenoi4 pou?x?d by a bazdz of lead storage batteriesx an4 the resonances..., Tbe poser was pxovided for the static nagnetic field by a bank of 20 lead storage cells connected in ssriesi The current was a+usted to the desired value with a variable xesistanoe which was connected in sex'ies with the solenoid. Qm source of field...

Mitchell, Richard Warren

2012-06-07T23:59:59.000Z

322

Workshops and Field Trips for Teachers  

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

Workshops and Field Trips for Teachers Workshops and Field Trips for Teachers Nature Bulletin No. 534-A Septmeber 7, 1974 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation WORKSHOPS AND FIELD TRIPS FOR TEACHERS The Forest Preserve District, as a part of the educational program conducted by its Department of Conservation, again is offering a series of three-day workshops and another of one-day field trips, during this school year, for teachers in the schools of Chicago and suburban Cook County. Only a few decades ago, most Illinois people resided on farms or in small towns. They lived close to the soil. From childhood they had been so familiar with the out-of-doors that special schooling in ecology, plant life, wildlife and land management seemed superfluous.

323

NREL: Wind Research - Regional Field Verification  

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

Field Verification Field Verification The Regional Field Verification (RFV) project, completed in 2007, focused on regional issues and opportunities and tested turbines to gain operational knowledge that could be applied nationwide. The RFV objectives were to: Support industry needs for gaining initial field operation experience with small wind turbines, and verify the performance, reliability, maintainability, and cost of small wind turbines in diverse applications. Expand opportunities for wind energy in new regions of the United States by tailoring projects to meet unique regional requirements, and document and communicate the experience from these projects for the benefit of others in the wind power development community and rural utilities. Through a competitive solicitation in 2001-2002, NREL selected one

324

Economizers; a Field Perspective and Case Studies  

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

Economizers; a Field Perspective and Case Studies Economizers; a Field Perspective and Case Studies Speaker(s): David Sellers Date: January 18, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Liping Wang Economizers are a common HVAC process with the potential to deliver significant energy savings by using outdoor air cooling to offset internal loads. But evidence from the field suggests that their track record is not good in terms of delivering those savings. This talk will provide a field perspective on some of the issues behind the poor track record, frequently illustrated with mini-case studies, and will conclude with a case study of a dysfunctional economizer in a cold environment and how the problem it was having was corrected by applying some of the concepts discussed earlier in the talk

325

Categorical Exclusion Determinations: Program and Field Offices |  

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

Determinations: Program and Field Offices Determinations: Program and Field Offices Categorical Exclusion Determinations: Program and Field Offices This page contains links (below) to pages on DOE Program, Field, or Site Office websites containing the CX determinations required to be posted under this policy, and also some for which documentation and posting are optional, i.e., determinations involving classes of actions listed in Appendix A or made before the policy's effective date of November 2, 2009. You may browse the determinations posted on each of the websites at the links below (you would be leaving this website), or view them directly on this website. SECRETARIAL OFFICES Advanced Research Projects Agency-Energy Advanced Technology Vehicles Manufacturing Loan Program Civilian Radioactive Waste Management

326

Definition: Field Sampling | Open Energy Information  

Open Energy Info (EERE)

Field Sampling Field Sampling Jump to: navigation, search Dictionary.png Field Sampling Systematic field sampling is critical for reliable characterize a geothermal resource. Some of the physical and chemical properties of rock samples can be estimated by visual inspection, but accurate determination of these properties requires detailed laboratory analysis. Surface or subsurface fluid sampling is also routinely performed to characterize the chemical, thermal, or hydrological properties of a hydrothermal system. Combinations of these sampling techniques have traditionally been used to obtain important information used to determine whether or not a viable power generation or heat utilization facility can be developed at a prospect. Soil sampling is a less commonly used method for exploration of

327

NREL: Wind Research - Field Verification Project  

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

Field Verification Project Field Verification Project The mission of the Field Verification Project (FVP) was to enable U.S. industry to complete the research, testing, and field verification needed to fully develop advanced wind energy technologies that lead the world in cost-effectiveness and reliability. The project, completed in 2003, included cost-shared research with industry partners to lead to the development of advanced technology wind turbines and support for projects that verify performance of wind turbine technologies in actual operational applications. FVP provided small wind turbine (<=100 kW) manufacturers with opportunities to operate and monitor their turbines under a range of distributed power applications and environments throughout the United States. This experience helped U.S. companies validate and improve the

328

NREL: Wind Research - Field Test Sites  

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

Field Test Sites Field Test Sites Aerial view of the National Wind Technology Center with the Flatiron Mountains in the background NREL's NWTC has numerous test pads available to industry partners for testing wind turbines that range in size from a few hundred kilowatts to several megawatts. PIX 17711. Manufacturers can take advantage of NREL's numerous test pads and the technical expertise of its staff to field test prototypes of small and large wind turbines. Many of the small wind turbines tested at the NWTC are participants in NREL's Small Wind Turbine Independent Test Program. Small and mid-sized turbines field tested at the NWTC include those manufactured by Atlantic Orient Corporation, Bergey Windpower, Southwest Wind Power, Northern Power Systems, Endurance Wind Power Inc., Gaia-Wind Ltd.,

329

BLM Arctic Field Office | Open Energy Information  

Open Energy Info (EERE)

vast area covered by the Arctic Field Office includes the 23-million-acre National Petroleum Reserve - Alaska, the largest block of federal land managed by a single agency. The...

330

National High Magnetic Field Laboratory: Metallic Superlattices  

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

Many years would pass, however, before thin films became a major focus in the field of physics. The introduction of computers and the search for practical methods of data storage...

331

Dark Field Microscopy for Analytical Laboratory Courses  

Science Journals Connector (OSTI)

An innovative and inexpensive optical microscopy experiment for a quantitative analysis or an instrumental analysis chemistry course is described. The students have hands-on experience with a dark field microscope and investigate the wavelength dependence ...

Ashley E. Augspurger; Anthony S. Stender; Kyle Marchuk; Thomas J. Greenbowe; Ning Fang

2014-05-01T23:59:59.000Z

332

Instrument response in complex radiation fields  

Science Journals Connector (OSTI)

......medicine and experimental plants for research in thermonuclear fusion, and discusses the main techniques adopted for...fields at European high-energy accelerators and thermonuclear fusion facilities. Geneva. CERN-2006-007 (July......

Stefano Agosteo; Marco Silari; Luisa Ulrici

2009-11-01T23:59:59.000Z

333

DOE Research and Development Accomplishments Fielded Search  

Office of Scientific and Technical Information (OSTI)

Inventor Title PublicationIssue Date Ascending Descending All Fields Bibliographic Data Title Author(s)Inventor(s) Number Submit Clear Some links on this page may take you to...

334

DOE Golden Field Office | Open Energy Information  

Open Energy Info (EERE)

1501 Place: Golden, Colorado Zip: 80401 Phone Number: 720-356-1800 Website: http:www1.eere.energy.govof References: Golden Field Office1 This article is a stub. You can help...

335

Magnetic Field Lines in Fusion Plasmas  

Science Journals Connector (OSTI)

Study of mappings as a part of Hamiltonian dynamics of magnetic field lines in plasmas were initiated by the research...1.... Actually, a fusion research in early sixties gave a huge impact on the development of ...

Sadrilla S. Abdullaev

2006-01-01T23:59:59.000Z

336

National High Magnetic Field Laboratory - Applied Superconductivity...  

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

the coupling between the gaps, and whether this produces new properties when quantized field lines move along grain boundaries or when MgB2 is exposed to microwave radiation. The...

337

Interactive display of vector fields inside waveguides  

Science Journals Connector (OSTI)

The educational software package WGVMAP has been developed to enable students to plot interactively the electric and magnetic field lines of TE and TM propagating modes in cylindrical waveguides. The waveguide cross-sections considered are rectangular, ...

A. Z. Elsherbeni; D. Kajfez; J. A. Hawkes

1993-05-01T23:59:59.000Z

338

National High Magnetic Field Laboratory - Electron Interaction...  

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

c). Plot of the CNT sample conductance versus the gate voltage and the axial magnetic field. A dark arrow indicates the value of B0 , where the energy gap has a minimum (metallic...

339

National High Magnetic Field Laboratory: Superconducting Wire  

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

of the particles has an effect on the pinning along various directions of magnetic field lines. The conductive capacity of 2G HTS wire is similarly affected by the...

340

Static High Magnetic Fields and Materials Science  

Science Journals Connector (OSTI)

Like temperature or pressure, the magnetic field is one of the important thermodynamic parameters that are used to change the inner energies of materials. Materials are essentially composed of atomic nuclei an...

M. Motokawa; K. Watanabe; F. Herlach

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

BLM Burley Field Office | Open Energy Information  

Open Energy Info (EERE)

Directory1 This article is a stub. You can help OpenEI by expanding it. BLM Burley Field Office is an organization based in Burley, Idaho. References "Idaho BLM Directory"...

342

Controllable adhesion using field-activated fluids  

E-Print Network (OSTI)

We demonstrate that field-responsive magnetorheological fluids can be used for variable-strength controllable adhesion. The adhesive performance is measured experimentally in tensile tests (a.k.a. probe-tack experiments) ...

Ewoldt, Randy H.

343

Axial power loss along open field lines  

SciTech Connect

Studies are underway to evaluate the linear mirror geometry as a candidate for a high-fluence, neutron irradiation facility. This steady-state, low-Q design is currently perceived to comprise a two-component plasma driven by neutral beams with mirror confinement of the hot ions and with no electrostatic axial reduction in the warm ion end losses. Warm-ion fueling and end-wall power density will require substantial cold plasma exterior to the mirror cell and neutral gas near the end wall. In this paper, we evaluate to what extent the loss power parallel to the axial magnetic field along open field lines is a function of the escaping plasma and end-wall parameters. By allowing the source power to depend directly on the plasma density and electron temperature, several new conclusions may be pertinent to closed field-line geometries with open field-line divertors.

Correll, D.L.

1987-08-01T23:59:59.000Z

344

Soil phosphorus status in potato fields  

E-Print Network (OSTI)

P deficiency in irrigated potatoes. Can. J. Plant Sci. 68,soil test P levels in these potato fields. References He,Introduction The potato crop requires substantial amounts of

He, Z.; Honeycutt, C. W.; Zhang, H.

2009-01-01T23:59:59.000Z

345

Bipolar pulse field for magnetic refrigeration  

DOE Patents (OSTI)

A magnetic refrigeration apparatus includes first and second steady state magnets, each having a field of substantially equal strength and opposite polarity, first and second bodies made of magnetocaloric material disposed respectively in the influence of the fields of the first and second steady state magnets, and a pulsed magnet, concentric with the first and second steady state magnets, and having a field which cycles between the fields of the first and second steady state magnets, thereby cyclically magnetizing and demagnetizing and thus heating and cooling the first and second bodies. Heat exchange apparatus of suitable design can be used to expose a working fluid to the first and second bodies of magnetocaloric material. A controller is provided to synchronize the flow of working fluid with the changing states of magnetization of the first and second bodies. 2 figs.

Lubell, M.S.

1994-10-25T23:59:59.000Z

346

Field Station Contributors, 2010 Acton, Gary  

E-Print Network (OSTI)

Field Station Contributors, 2010 Acton, Gary Allen, Deborah and Harry Ardell, Robert and Lee Baker Mead, Judson and Jane Mead, Thomas and Lenore Merritt, Andrew and Eleanor Morganwalp, David and Jill

Polly, David

347

Heavy quarks in effective field theories  

E-Print Network (OSTI)

Heavy quark physics serves as a probe to understand QCD, measure standard model parameters, and look for signs of new physics. We study several aspects of heavy quark systems in an effective field theory framework, including ...

Jain, Ambar

2009-01-01T23:59:59.000Z

348

Subwavelength optical microscopy in the far field  

E-Print Network (OSTI)

We present a procedure for subwavelength optical microscopy. The identical atoms are distributed on a plane and shined with a standing wave. We rotate the plane to different angles and record the resonant fluorescence spectra in the far field, from...

Sun, Qingqing; Al-Amri, M.; Scully, Marlan O.; Zubairy, M. Suhail.

2011-01-01T23:59:59.000Z

349

Axions: Bose Einstein Condensate or Classical Field?  

E-Print Network (OSTI)

The axion is a motivated dark matter candidate, so it would be interesting to find features in Large Scale Structures specific to axion dark matter. Such features were proposed for a Bose Einstein condensate of axions, leading to confusion in the literature (to which I contributed) about whether axions condense due to their gravitational interactions. This note argues that the Bose Einstein condensation of axions is a red herring: the axion dark matter produced by the misalignment mechanism is already a classical field, which has the distinctive features attributed to the axion condensate (BE condensates are described as classical fields). This note also estimates that the rate at which axion particles condense to the field, or the field evaporates to particles, is negligeable.

Sacha Davidson

2014-12-20T23:59:59.000Z

350

Antisymmetric field in string gas cosmology  

E-Print Network (OSTI)

We study how the introduction of a 2-form field flux modify the dynamics of a T-duality invariant string gas cosmology model of Greene, Kabat and Marnerides. It induces a repulsive potential term in the effective action for the scale factor of the spacial dimensions. Without the 2-form field flux, the universe fails to expand when the pressure due to string modes vanishes. With the presence of a homogeneous 2-form field flux, it propels 3 spacial dimensions to grow into a macroscopic 4 dimensional space-time. We find that it triggers an expansion of a universe away from the oscillating phase around the self-dual radius. We also investigate the effects of a constant 2-form field. We can obtain an expanding 4 dimensional space-time by tuning it at the critical value.

Igmar C. Rosas-Lpez; Yoshihisa Kitazawa

2010-07-09T23:59:59.000Z

351

Azerbaijan field to step up oil flow  

SciTech Connect

This paper reports that a unit of Pennzoil Co., Houston, is scheduled to operate a development program that could more than double oil production from Guneshli field off Azerbaijan in the southern Caspian Sea. Under agreements signed in Baku, Pennzoil Caspian Corp., Ramco Energy Ltd. of Aberdeen, Scotland, and state oil company Azerneft will have exclusive right to jointly develop the field. Partners' shares and other project details are to be laid out in the final development plan, expected by yearend.

Not Available

1992-10-19T23:59:59.000Z

352

Maps between Deformed and Ordinary Gauge Fields  

E-Print Network (OSTI)

In this paper, we introduce a map between the q-deformed gauge fields defined on the GL$_{q}(N) $-covariant quantum hyperplane and the ordinary gauge fields. Perturbative analysis of the q-deformed QED at the classical level is presented and gauge fixing $\\grave{a} $ la BRST is discussed. An other star product defined on the hybrid $(q,h) $% -plane is explicitly constructed .

L. Mesref

2005-04-13T23:59:59.000Z

353

Permanent magnet edge-field quadrupole  

DOE Patents (OSTI)

Planar permanent magnet edge-field quadrupoles for use in particle accelerating machines and in insertion devices designed to generate spontaneous or coherent radiation from moving charged particles are disclosed. The invention comprises four magnetized rectangular pieces of permanent magnet material with substantially similar dimensions arranged into two planar arrays situated to generate a field with a substantially dominant quadrupole component in regions close to the device axis. 10 figs.

Tatchyn, R.O.

1997-01-21T23:59:59.000Z

354

Plasma Paramagnetism in Radio-Frequency Fields  

Science Journals Connector (OSTI)

A study by experiment, simulation, and theory has found that a plasma responds paramagnetically to the external rf magnetic field applied perpendicular to the static magnetic field with frequency ?frequency. This effect can be exploited in the rf plugging and heating of plasmas; it explains the earlier rf plugging experiment (type-3 coil) of Watari et al. at Nagoya and possibly the rf heating experiment of Dikii et al. on the Uragan stellarator.

Y. Ohsawa; M. Inutake; T. Tajima; T. Hatori; T. Kamimura

1979-10-22T23:59:59.000Z

355

Superconducting surface impedance under radiofrequency field  

Based on BCS theory with moving Cooper pairs, the electron states distribution at 0K and the probability of electron occupation with finite temperature have been derived and applied to anomalous skin effect theory to obtain the surface impedance of a superconductor under radiofrequency (RF) field. We present the numerical results for Nb and compare these with representative RF field-dependent effective surface resistance measurements from a 1.5 GHz resonant structure.

Xiao, Binping [JLAB, William and Mary College; Reece, Charles E. [JLAB; Kelley, Michael J. [JLAB, William and Mary College

2013-07-01T23:59:59.000Z

356

Higher-Spin Gauge Fields and Duality  

E-Print Network (OSTI)

We review the construction of free gauge theories for gauge fields in arbitrary representations of the Lorentz group in $D$ dimensions. We describe the multi-form calculus which gives the natural geometric framework for these theories. We also discuss duality transformations that give different field theory representations of the same physical degrees of freedom, and discuss the example of gravity in $D$ dimensions and its dual realisations in detail.

D. Francia; C. M. Hull

2005-02-24T23:59:59.000Z

357

Kinetics of atoms in a bichromatic field  

SciTech Connect

The kinetics of atoms in a bichromatic field is considered. Analytic solutions are obtained for the force, friction coefficient, and diffusion coefficient in the model of a two-level atom without limitations imposed on the intensity of light fields. This effect is observed in the domain of global minima and maxima of the optical potential (i.e., at points where the relative phase of two standing waves is Greek-Phi-Symbol = 0, {pi}/2.

Prudnikov, O. N., E-mail: llf@laser.nsc.ru [Novosibirsk State University (Russian Federation); Baklanov, A. S. [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation); Taichenachev, A. V. [Novosibirsk State University (Russian Federation)] [Novosibirsk State University (Russian Federation); Tumaikin, A. M. [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation)] [Russian Academy of Sciences, Institute of Laser Physics, Siberian Branch (Russian Federation); Yudin, V. I. [Novosibirsk State University (Russian Federation)] [Novosibirsk State University (Russian Federation)

2013-08-15T23:59:59.000Z

358

The conformal loop ensemble nesting field  

E-Print Network (OSTI)

The conformal loop ensemble CLE$_\\kappa$ with parameter $8/3 nesting field. We generalize this result by assigning i.i.d. weights to the loops, and we treat an alternate notion of convergence to the nesting field in the case where the weight distribution has mean zero. We also establish estimates for moments of the number of CLE loops surrounding two given points.

Jason Miller; Samuel S. Watson; David B. Wilson

2014-12-21T23:59:59.000Z

359

Density waves in a transverse electric field  

Science Journals Connector (OSTI)

In a quasi-one-dimensional conductor with an open Fermi surface, a charge- or a spin-density-wave phase can be destroyed by an electric field perpendicular to the direction of high conductivity. This mechanism, due to the breakdown of electron-hole symmetry, is very similar to the orbital destruction of superconductivity by a magnetic field, due to time-reversal symmetry.

Gilles Montambaux

1996-12-15T23:59:59.000Z

360

Visualization of a changing dose field.  

SciTech Connect

To help visualize the results of dose modeling for nuclear materials processing opcrations, we have developed an integrated model that uses a simple dosc calculation tool to obtain estimates of the dose field in a complex geomctry and then post-process the data to produce a video of the now time-dependent data. We generate two-dimensional radiation fields within an existing physical cnvironment and then analyze them using three-dimensional visualization techniques. The radiation fields are generated for both neutrons and photons. Standard monoenergetic diffusion theory is used to estimate the neutron dosc fields. The photon dose is estimated using a point-kernel formalism, with photon shielding effects and buildup taken into account. The radiation field dynamics are analyzed by interleaving individual 3D graphic 'snapshots' into a smoothed, lime dependent, video-based display. In-the-room workers are 'seen' in the radiation fields via a graphical, 3D fly-through rendering of the room. Worker dose levels can reveal surprising dependencies on operational source placement, source types, worker alignment, shielding alignments, and indirect operations from external workers.

Helm, T. M (Terry M.); Kornreich, D. E. (Drew E.)

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Diffusive processes in a stochastic magnetic field  

Science Journals Connector (OSTI)

The statistical representation of a fluctuating (stochastic) magnetic field configuration is studied in detail. The Eulerian correlation functions of the magnetic field are determined, taking into account all geometrical constraints: these objects form a nondiagonal matrix. The Lagrangian correlations, within the reasonable Corrsin approximation, are reduced to a single scalar function, determined by an integral equation. The mean square perpendicular deviation of a geometrical point moving along a perturbed field line is determined by a nonlinear second-order differential equation. The separation of neighboring field lines in a stochastic magnetic field is studied. We find exponentiation lengths of both signs describing, in particular, a decay (on the average) of any initial anisotropy. The vanishing sum of these exponentiation lengths ensures the existence of an invariant which was overlooked in previous works. Next, the separation of a particles trajectory from the magnetic field line to which it was initially attached is studied by a similar method. Here too an initial phase of exponential separation appears. Assuming the existence of a final diffusive phase, anomalous diffusion coefficients are found for both weakly and strongly collisional limits. The latter is identical to the well known Rechester-Rosenbluth coefficient, which is obtained here by a more quantitative (though not entirely deductive) treatment than in earlier works.

Hai-Da Wang; M. Vlad; E. Vanden Eijnden; F. Spineanu; J. H. Misguich; R. Balescu

1995-05-01T23:59:59.000Z

362

Nonlinear quantum equations: Classical field theory  

SciTech Connect

An exact classical field theory for nonlinear quantum equations is presented herein. It has been applied recently to a nonlinear Schrdinger equation, and it is shown herein to hold also for a nonlinear generalization of the Klein-Gordon equation. These generalizations were carried by introducing nonlinear terms, characterized by exponents depending on an index q, in such a way that the standard, linear equations, are recovered in the limit q? 1. The main characteristic of this field theory consists on the fact that besides the usual ?(x(vector sign),t), a new field ?(x(vector sign),t) needs to be introduced in the Lagrangian, as well. The field ?(x(vector sign),t), which is defined by means of an additional equation, becomes ?{sup *}(x(vector sign),t) only when q? 1. The solutions for the fields ?(x(vector sign),t) and ?(x(vector sign),t) are found herein, being expressed in terms of a q-plane wave; moreover, both field equations lead to the relation E{sup 2}=p{sup 2}c{sup 2}+m{sup 2}c{sup 4}, for all values of q. The fact that such a classical field theory works well for two very distinct nonlinear quantum equations, namely, the Schrdinger and Klein-Gordon ones, suggests that this procedure should be appropriate for a wider class nonlinear equations. It is shown that the standard global gauge invariance is broken as a consequence of the nonlinearity.

Rego-Monteiro, M. A.; Nobre, F. D. [Centro Brasileiro de Pesquisas Fsicas and National Institute of Science and Technology for Complex Systems, Rua Xavier Sigaud 150, 22290-180 Rio de Janeiro - RJ (Brazil)] [Centro Brasileiro de Pesquisas Fsicas and National Institute of Science and Technology for Complex Systems, Rua Xavier Sigaud 150, 22290-180 Rio de Janeiro - RJ (Brazil)

2013-10-15T23:59:59.000Z

363

Magnetic field exposure characterization during environmental field surveys for the EMF RAPID program  

SciTech Connect

The characteristics of magnetic fields in different environments are systematically collected under the RAPID Engineering Project {number_sign}3. Exposure to magnetic field is due to area sources and to local sources at exposure points. This paper presents only a summary of results concerning exposure to area sources. The data presented in this paper show that area fields differ significantly between sites of the same environments. This makes it difficult to characterize each environment type by a field value. Characteristics of the site, such as age and number of floors of the building, probably have a large effect on the magnetic field, independently on the specific use of the building. Magnetic field exposure at exposure points is likely to show a greater dependence on the environment type.

Zaffanella, L.E. [Enertech Consultants, Lee, MA (United States)

1996-10-01T23:59:59.000Z

364

Field Mapping At Dixie Valley Geothermal Field Area (Smith, Et Al., 2001) |  

Open Energy Info (EERE)

Et Al., 2001) Et Al., 2001) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Field Mapping At Dixie Valley Geothermal Field Area (Smith, Et Al., 2001) Exploration Activity Details Location Dixie Valley Geothermal Field Area Exploration Technique Field Mapping Activity Date Usefulness not indicated DOE-funding Unknown References Richard P. Smith, Kenneth W. Wisianz, David D. BlackweIl (2001) Geologic And Geophysical Evidence For Intra-Basin And Footwall Faulting At Dixie Valley, Nevada Retrieved from "http://en.openei.org/w/index.php?title=Field_Mapping_At_Dixie_Valley_Geothermal_Field_Area_(Smith,_Et_Al.,_2001)&oldid=510735" Category: Exploration Activities What links here Related changes Special pages Printable version Permanent link

365

CHAPTER 3. STRUCTURE OF MAGNETIC FIELDS 1 Structure of Magnetic  

E-Print Network (OSTI)

CHAPTER 3. STRUCTURE OF MAGNETIC FIELDS 1 Chapter 3 Structure of Magnetic Fields Many of the most interesting plasmas are permeated by or imbedded in magnetic fields.1 As shown in Fig. 3.1, the magnetic field properties of magnetic fields in plasmas can be discussed without specifying a model for the plasma

Callen, James D.

366

Magnetic Field Control of the Quantum Chaotic Dynamics of Hydrogen Analogues in an Anisotropic Crystal Field  

E-Print Network (OSTI)

We report magnetic field control of the quantum chaotic dynamics of hydrogen analogues in an anisotropic solid state environment. The chaoticity of the system dynamics was quantified by means of energy level statistics. We analyzed the magnetic field dependence of the statistical distribution of the impurity energy levels and found a smooth transition between the Poisson limit and the Wigner limit, i.e. transition between regular Poisson and fully chaotic Wigner dynamics. Effect of the crystal field anisotropy on the quantum chaotic dynamics, which manifests itself in characteristic transitions between regularity and chaos for different field orientations, was demonstrated.

Weihang Zhou; Zhanghai Chen; Bo Zhang; C. H. Yu; Wei Lu; S. C. Shen

2010-03-09T23:59:59.000Z

367

Field-line transport in stochastic magnetic fields: Percolation, Lvy flights, and non-Gaussian dynamics  

Science Journals Connector (OSTI)

The transport of magnetic field lines is studied numerically in the case where strong three-dimensional magnetic fluctuations are superimposed to a uniform average magnetic field. The magnetic percolation of field lines between magnetic islands is found, as well as a non-Gaussian regime where the field lines exhibit Lvy random walks, changing from Lvy flights to trapped motion. Anomalous diffusion laws ??xi2??s? with ?>1 and ?<1 are found for low fluctuation levels, while normal diffusion and Gaussian random walks are recovered for sufficiently high fluctuation levels.

G. Zimbardo and P. Veltri

1995-02-01T23:59:59.000Z

368

Laboratory Toxicity and Field Effects of a Complex Mixture: Oil-field Produced Water.  

E-Print Network (OSTI)

??This dissertation investigated how organisms in the field and the laboratory responded to complex mixtures or combinations of stressors. Organisms are continually exposed to natural (more)

Fisher, Jonathan C.

2010-01-01T23:59:59.000Z

369

An analytical method to calculate equivalent fields to irregular symmetric and asymmetric photon fields  

SciTech Connect

Equivalent field is frequently used for central axis depth-dose calculations of rectangular- and irregular-shaped photon beams. As most of the proposed models to calculate the equivalent square field are dosimetry based, a simple physical-based method to calculate the equivalent square field size was used as the basis of this study. The table of the sides of the equivalent square or rectangular fields was constructed and then compared with the well-known tables by BJR and Venselaar, et al. with the average relative error percentage of 2.5 2.5% and 1.5 1.5%, respectively. To evaluate the accuracy of this method, the percentage depth doses (PDDs) were measured for some special irregular symmetric and asymmetric treatment fields and their equivalent squares for Siemens Primus Plus linear accelerator for both energies, 6 and 18 MV. The mean relative differences of PDDs measurement for these fields and their equivalent square was approximately 1% or less. As a result, this method can be employed to calculate equivalent field not only for rectangular fields but also for any irregular symmetric or asymmetric field.

Tahmasebi Birgani, Mohamad J. [Department of Radiation Therapy, Golestan Hospital, JondiShapour University of Medical Science, Ahvaz (Iran, Islamic Republic of); Department of Medical Physics, JondiShapour University of Medical Sciences, Ahvaz (Iran, Islamic Republic of); Chegeni, Nahid, E-mail: nchegen@yahoo.com [Department of Medical Physics, JondiShapour University of Medical Sciences, Ahvaz (Iran, Islamic Republic of); Zabihzadeh, Mansoor; Hamzian, Nima [Department of Medical Physics, JondiShapour University of Medical Sciences, Ahvaz (Iran, Islamic Republic of)

2014-04-01T23:59:59.000Z

370

Near-Field Magneto-Optical Microscope  

DOE Patents (OSTI)

A device and method for mapping magnetic fields of a sample at a resolution less than the wavelength of light without altering the magnetic field of the sample is disclosed. A device having a tapered end portion with a magneto-optically active particle positioned at the distal end thereof in communication with a fiber optic for transferring incoming linearly polarized light from a source thereof to the particle and for transferring reflected light from the particle is provided. The fiber optic has a reflective material trapping light within the fiber optic and in communication with a light detector for determining the polarization of light reflected from the particle as a function of the strength and direction of the magnetic field of the sample. Linearly polarized light from the source thereof transferred to the particle positioned proximate the sample is affected by the magnetic field of the sample sensed by the particle such that the difference in polarization of light entering and leaving the particle is due to the magnetic field of the sample. Relative movement between the particle and sample enables mapping.

Vlasko-Vlasov, Vitalii; Welp, Ulrich; and Crabtree, George W.

2005-12-06T23:59:59.000Z

371

Electric field shielding in dielectric nanosolutions  

E-Print Network (OSTI)

To gain some insight into electrochemical activity of dielectric colloids of technical and biomedical interest we investigate a model of dielectric nanosolution whose micro-constitution is dominated by dipolarions -- positively and negatively charged spherically symmetric nano-structures composed of ionic charge surrounded by cloud of radially polarized dipoles of electrically neutral molecules of solvent. Combing the standard constitutive equations of an isotropic dielectric liquid with Maxwell equation of electrostatics and presuming the Boltzmann shape of the particle density of bound-charge we derive equation for the in-medium electrostatic field. Particular attention is given to numerical analysis of obtained analytic solutions of this equation describing the exterior fields of dipolarions with dipolar atmospheres of solvent molecules endowed with either permanent or field-induced dipole moments radially polarized by central symmetric field of counterions. The presented computations show that the electric field shielding of dipolarions in dielectric nanosolutions is quite different from that of counterionic nano-complexes of Debye-H\\"uckel theory of electrolytes.

Sergey Bastrukov; Pik-Yin Lai; Irina Molodtsova

2014-03-26T23:59:59.000Z

372

AC Electrostatic Field Study : Final Report.  

SciTech Connect

The phenomenon of fast transients propagating to the outer sheath of a gas insulated substation (GIS) during switching and disconnect operations as well as the distortion of the electric field gradient around an electric transmission line in the presence of field measuring equipment are examples of electrostatic and electromagnetic field problems that are very much on the minds of both power engineers and maintenance personnel alike. Maintenance personnel working on high voltage equipment want to know the areas that have the highest electric field strength gradients and they want to reduce the risk of being shocked when touching a conventionally 60 Hz grounded GIS enclosure due to fast transients initiated by faults and switching operations. In studying these phenomena during the performance period of this grant, tower configurations for the electric field strength gradient measurements were tested with the ESURF3D program acquired from BPA and gas insulated substation test pole (GISTP) models were tested using the Alternative Transients Program (ATP) version Electromagnets Transients Program (EMTP). The results of these two modeling paradigms are presented in this report not as the last word on these subjects, but as a couple of the many ways one can approach two classical electromagnetic waves problems. 19 refs., 13 figs., 3 tabs.

Lebby, Gary L.

1990-08-28T23:59:59.000Z

373

Helicity Observation of Weak and Strong Fields  

E-Print Network (OSTI)

We report in this letter our analysis of a large sample of photospheric vector magnetic field measurements. Our sample consists of 17200 vector magnetograms obtained from January 1997 to August 2004 by Huairou Solar Observing Station of the Chinese National Astronomical Observatory. Two physical quantities, $\\alpha$ and current helicity, are calculated and their signs and amplitudes are studied in a search for solar cycle variations. Different from other studies of the same type, we calculate these quantities for weak ($100G1000G$) fields separately. For weak fields, we find that the signs of both $\\alpha$ and current helicity are consistent with the established hemispheric rule during most years of the solar cycle and their magnitudes show a rough tendency of decreasing with the development of solar cycle. Analysis of strong fields gives an interesting result: Both $\\alpha$ and current helicity present a sign opposite to that of weak fields. Implications of these observations on dynamo theory and helicity production are also briefly discussed.

Mei Zhang

2006-06-09T23:59:59.000Z

374

Near Field Magneto-Optical Microscope  

DOE Patents (OSTI)

A device and method for mapping magnetic fields of a sample at a resolution less than the wavelength of light without altering the magnetic field of the sample is disclosed. A device having a tapered end portion with a magneto-optically active particle positioned at the distal end thereof in communication with a fiber optic for transferring incoming linearly polarized light from a source thereof to the particle and for transferring reflected light from the particle is provided. The fiber optic has a reflective material trapping light within the fiber optic and in communication with a light detector for determining the polarization of light reflected from the particle as a function of the strength and direction of the magnetic field of the sample. Linearly polarized light from the source thereof transferred to the particle positioned proximate the sample is affected by the magnetic field of the sample sensed by the particle such that the difference in polarization of light entering and leaving the particle is due to the magnetic field of the sample. Relative movement between the particle and sample enables mapping.

Vlasko-Vlasov, Vitalii K. (Downers Grove, IL); Welp, Ulrich (Lisle, IL); Crabtree, George W. (Chicago, IL)

2005-12-06T23:59:59.000Z

375

External-field-free magnetic biosensor  

SciTech Connect

In this paper, we report a magnetic nanoparticle (MNP) detection scheme without the presence of any external magnetic field. The proposed magnetic sensor uses a patterned groove structure within the sensor so that no external magnetic field is needed to magnetize the MNPs. An example is given based on a giant magnetoresistance (GMR) sensing device with a spin valve structure. For this structure, the detection of MNPs located inside the groove and near the free layer is demonstrated under no external magnetic field. Micromagnetic simulations are performed to calculate the signal to noise level of this detection scheme. A maximum signal to noise ratio (SNR) of 18.6?dB from one iron oxide magnetic nanoparticle with 8?nm radius is achieved. As proof of concept, this external-field-free GMR sensor with groove structure of 200?nm??200?nm is fabricated using a photo and an electron beam integrated lithography process. Using this sensor, the feasibility demonstration of the detection SNR of 9.3?dB is achieved for 30??l magnetic nanoparticles suspension (30?nm iron oxide particles, 1?mg/ml). This proposed external-field-free sensor structure is not limited to GMR devices and could be applicable to other magnetic biosensing devices.

Li, Yuanpeng; Wang, Yi; Klein, Todd; Wang, Jian-Ping, E-mail: jpwang@umn.edu [Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

2014-03-24T23:59:59.000Z

376

Global Stability of the Field Reversed Configuration  

SciTech Connect

New computational results are presented which provide a theoretical basis for the stability of the Field Reversed Configuration (FRC). The FRC is a compact toroid with negligible toroidal field in which the plasma is confined by a poloidal magnetic field associated with toroidal diamagnetic current. Although many MHD modes are predicted to be unstable, FRCs have been produced successfully by several formation techniques and show surprising macroscopic resilience. In order to understand this discrepancy, we have developed a new 3D nonlinear hybrid code (kinetic ions and fluid electrons), M3D-B, which is used to study the role of kinetic effects on the n = 1 tilt and higher n modes in the FRC. Our simulations show that there is a reduction in the tilt mode growth rate in the kinetic regime, but no absolute stabilization has been found for s bar less than or approximately equal to 1, where s bar is the approximate number of ion gyroradii between the field null and the separatrix. However, at low values of s bar, the instabilities saturate nonlinearly through a combination of a lengthening of the initial equilibrium and a modification of the ion distribution function. These saturated states persist for many Alfven times, maintaining field reversal.

E.V. Belova; S.C. Jardin; H. Ji; R.M. Kulsrud; W. Park; M. Yamada

2000-11-15T23:59:59.000Z

377

Biobjective optimization for general oil field development  

Science Journals Connector (OSTI)

Abstract The optimization of oil field development and production planning typically requires the consideration of multiple, possibly conflicting, objectives. For example, in a waterflooding project, we might seek to maximize oil recovery and minimize water injection. It is therefore important to devise and test optimization procedures that consider two or more objectives in the determination of optimal development and production plans. In this work we present an approach for field development optimization with two objectives. A single-objective product formulation, which systematically combines the two objectives in a sequence of single-objective optimization problems, is applied. The method, called BiPSOMADS, utilizes at its core our recently developed PSOMADS (Particle Swarm OptimizationMesh Adaptive Direct Search) hybrid optimization algorithm. This derivative-free procedure has been shown to be effective for the solution of generalized field development and well control problems that include categorical, discrete and continuous variables along with general (nonlinear) constraints. Four biobjective field development and well control examples are solved using BiPSOMADS. These examples include problems that consider the maximization of both net present value and cumulative oil production, and the maximization of both long-term and short-term reservoir performance. An example that highlights the applicability of biobjective optimization for field development under geological uncertainty is also presented. This usage of BiPSOMADS enables us to maximize expected reservoir performance while reducing the risk associated with the worst-case scenario.

Obiajulu J. Isebor; Louis J. Durlofsky

2014-01-01T23:59:59.000Z

378

Polarized neutron reflectometry in high magnetic fields  

SciTech Connect

A simple method is described to maintain the polarization of a neutron beam on its way through the large magnetic stray fields produced by a vertical field of a cryomagnet with a split-coil geometry. The two key issues are the proper shielding of the neutron spin flippers and an additional radial field component in order to guide the neutron spin through the region of the null point (i.e., point of reversal for the vertical field component). Calculations of the neutron's spin rotation as well as polarized neutron reflectometry experiments on an ErFe{sub 2}/DyFe{sub 2} multilayer show the perfect performance of the used setup. The recently commissioned cryomagnet M5 with a maximum vertical field of up to 7.2 T in asymmetric mode for polarized neutrons and 9 T in symmetric mode for unpolarized neutrons was used on the C5 spectrometer in reflectometry mode, at the NRU reactor in Chalk River, Canada.

Fritzsche, H. [National Research Council Canada, Canadian Neutron Beam Centre, Chalk River Laboratories, Chalk River, Ontario K0J 1J0 (Canada)

2005-11-15T23:59:59.000Z

379

Remote/New sites: Many Field  

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

Remote/New sites: Many Field Remote/New sites: Many Field Campaigns require temporary installations on non-ACRF sites. This requires identification of landowners, negotiation of leases, and infrastructure logistics for electrical and internet connectivity. Argonne National Laboratory is managed by UChicago-Argonne LLC for the U.S. Department of Energy SGP Field Campaigns: The Other Side of Operations Brad W. Orr 1 Dan J. Rusk 2 John Schatz 2 Dan Nelson 2 David Breedlove 2 Douglas L. Sisterson 1 1 Argonne National Laboratory, Argonne, IL 2 ACRF/SGP, Cherokee Nation Distributors, Stilwell, OK Background Implementation All departments must work closely together to implement a campaign. In addition they must have the flexibility to adapt to new and unique instrument deployments. The

380

Categorical Exclusion Determinations: Strategic Petroleum Reserve Field  

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

June 20, 2011 June 20, 2011 CX-006251: Categorical Exclusion Determination Big Hill Heat Exchanger Isolation Valves - Install CX(s) Applied: B1.3 Date: 06/20/2011 Location(s): Jefferson County, Texas Office(s): Strategic Petroleum Reserve Field Office June 20, 2011 CX-006250: Categorical Exclusion Determination Blast and Paint Bayou Choctaw Brine Pump Pad and Associate Piping CX(s) Applied: B1.3 Date: 06/20/2011 Location(s): Iberville Parish, Louisiana Office(s): Strategic Petroleum Reserve Field Office June 20, 2011 CX-006249: Categorical Exclusion Determination Blast and Paint West Hackberry Heat Exchanger Headers and Overhead Rack Piping CX(s) Applied: B1.3 Date: 06/20/2011 Location(s): Cameron Parish, Louisiana Office(s): Strategic Petroleum Reserve Field Office June 20, 2011

Note: This page contains sample records for the topic "abu safah field" 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

Non-Employee Static Magnetic Field Questionnaire  

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

Occupational Medicine Clinic (OMC) Occupational Medicine Clinic (OMC) Medical Questionnaire for non-BSA Workers/Students who may enter STATIC MAGNETIC FIELDS NAME:_________________ Extension__________ BNL Badge #:_____________ BNL Supervisor_____________ INSTRUCTIONS TO BSA SUPERVISOR or PRECEPTOR: Please print this form and give it to the (non-BSA employee) worker or student for completion. This individual should not give you the completed form, but should instead mail or fax it to OMC. INSTRUCTIONS TO WORKER or STUDENT: The purpose of this questionnaire is to provide the OMC physician at BNL with information about any medical devices or conditions you may have that might affect your ability to safely enter a strong magnetic field, in order to determine whether you can be medically cleared to enter such a field.

382

Categorical Exclusion Determinations: Strategic Petroleum Reserve Field  

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

20, 2010 20, 2010 CX-001669: Categorical Exclusion Determination Install Fence Around Bryan Mound K-9 Training Area CX(s) Applied: B1.11 Date: 04/20/2010 Location(s): Freeport, Texas Office(s): Fossil Energy, Strategic Petroleum Reserve Field Office April 7, 2010 CX-001518: Categorical Exclusion Determination Re-seal Polyurethane Overcoat on BH Substation Relay Building 814 CX(s) Applied: B1.3 Date: 04/07/2010 Location(s): Texas Office(s): Fossil Energy, Strategic Petroleum Reserve Field Office March 16, 2010 CX-001227: Categorical Exclusion Determination Replacement of Big Hill Deep Anode Ground Bed Site for Cavern 114 CX(s) Applied: B1.3 Date: 03/16/2010 Location(s): Big Hill, Texas Office(s): Fossil Energy, Strategic Petroleum Reserve Field Office March 3, 2010 CX-001004: Categorical Exclusion Determination

383

Categorical Exclusion Determinations: Strategic Petroleum Reserve Field  

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

October 31, 2012 October 31, 2012 CX-009509: Categorical Exclusion Determination Power Monitoring, Communication and Control Upgrade at Bryan Mound Degas Plant (Install) CX(s) Applied: B1.7 Date: 10/31/2012 Location(s): Texas Offices(s): Strategic Petroleum Reserve Field Office October 30, 2012 CX-009510: Categorical Exclusion Determination Strategic Petroleum Reserve Emergency Pipeline and Piping Repair, 2013-2017 CX(s) Applied: B5.4 Date: 10/30/2012 Location(s): CX: none Offices(s): Strategic Petroleum Reserve Field Office October 2, 2012 CX-009216: Categorical Exclusion Determination ADAS System Life Cycle Support, 2012-2015 CX(s) Applied: B1.7 Date: 10/02/2012 Location(s): CX: none Offices(s): Strategic Petroleum Reserve Field Office September 24, 2012 CX-009217: Categorical Exclusion Determination

384

A molecular mechanics force field for lignin  

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

Molecular Molecular Mechanics Force Field for Lignin LOUKAS PETRIDIS, JEREMY C. SMITH Center for Molecular Biophysics, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 Received 14 February 2008; Revised 8 May 2008; Accepted 12 June 2008 DOI 10.1002/jcc.21075 Published online 1 August 2008 in Wiley InterScience (www.interscience.wiley.com). Abstract: A CHARMM molecular mechanics force field for lignin is derived. Parameterization is based on reproducing quantum mechanical data of model compounds. Partial atomic charges are derived using the RESP electrostatic potential fitting method supplemented by the examination of methoxybenzene:water interactions. Dihedral parameters are optimized by fitting to critical rotational potentials and bonded parameters are obtained by optimizing vibrational frequencies and normal modes. Finally, the force field is validated

385

Categorical Exclusion Determinations: Strategic Petroleum Reserve Field  

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

10, 2012 10, 2012 CX-008350: Categorical Exclusion Determination Re-work Bryan Mound 30" Crude Oil Pipeline Mainline Valves CX(s) Applied: B1.3 Date: 04/10/2012 Location(s): Texas Offices(s): Strategic Petroleum Reserve Field Office April 10, 2012 CX-008349: Categorical Exclusion Determination Replacement Anode Bed on West Hackberry 42-inch Crude Oil Pipeline at Gum Cove Road CX(s) Applied: B1.3 Date: 04/10/2012 Location(s): Louisiana Offices(s): Strategic Petroleum Reserve Field Office March 28, 2012 CX-008351: Categorical Exclusion Determination Transport and Perform TD&I on Big Hill TX-29 Transformer CX(s) Applied: B1.3 Date: 03/28/2012 Location(s): Texas Offices(s): Strategic Petroleum Reserve Field Office February 23, 2012 CX-007816: Categorical Exclusion Determination

386

Applied Field Research Initiative Attenuation Based Remedies  

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

PA00133 - March 2011 PA00133 - March 2011 Applied Field Research Initiative Attenuation Based Remedies in the Subsurface Located at the Savannah River Site in Aiken, South Carolina, the Attenuation-Based Remedies in the Subsurface Applied Field Research Initiative (ABRS AFRI) was established to develop the tools, approaches and technologies that will be required to address the technical challenges associated characteriza- tion, remediation and long-term monitoring of recalcitrant compounds in the subsurface at Department of Energy (DOE) Environmental Management (EM) sites. The ABRS AFRI site provides a unique setting for researchers in both applied and basic science fields. A wealth of subsurface data is available to support research activities and remedial decision making.

387

Property:FieldProcedures | Open Energy Information  

Open Energy Info (EERE)

FieldProcedures FieldProcedures Jump to: navigation, search Property Name FieldProcedures Property Type Text Description Description of actions, equipment and footprint of the exploration activity Subproperties This property has the following 39 subproperties: A Active Seismic Techniques Airborne Gravity Survey Audio-Magnetotellurics C Controlled Source Audio MT Cross-Dipole Acoustic Log D DC Resistivity Survey (Dipole-Dipole Array) DC Resistivity Survey (Mise-Á-La-Masse) DC Resistivity Survey (Pole-Dipole Array) DC Resistivity Survey (Schlumberger Array) DC Resistivity Survey (Wenner Array) Development Drilling Direct-Current Resistivity Survey Drilling Techniques E Earth Tidal Analysis Electrical Profiling Configurations Electromagnetic Techniques Exploration Drilling F FMI Log Frequency-Domain Electromagnetic Survey

388

Exploring scalar field dynamics with Gaussian processes  

E-Print Network (OSTI)

The origin of the accelerated expansion of the Universe remains an unsolved mystery in Cosmology. In this work we consider a spatially flat Friedmann-Robertson-Walker (FRW) Universe with non-relativistic matter and a single scalar field contributing to the energy density of the Universe. Properties of this scalar field, like potential, kinetic energy, equation of state etc. are reconstructed from Supernovae and BAO data using Gaussian processes. We also reconstruct energy conditions and kinematic variables of expansion, such as the jerk and the slow roll parameter. We find that the reconstructed scalar field variables and the kinematic quantities are consistent with a flat Lambda-CDM Universe. Further we find that the null energy condition is satisfied for the redshift range of the Supernovae data considered in the paper but, the strong energy condition is violated.

Remya Nair; Sanjay Jhingan; Deepak Jain

2014-01-01T23:59:59.000Z

389

Bound states in a strong magnetic field  

SciTech Connect

We expect a strong magnetic field to be produced in the perpendicular direction to the reaction plane, in a noncentral heavy-ion collision . The strength of the magnetic field is estimated to be eB{approx}m{sup 2}{sub {pi}}{approx} 0.02 GeV{sup 2} at the RHIC and eB{approx} 15m{sup 2}{sub {pi}}{approx} 0.3 GeV{sup 2} at the LHC. We investigate the effects of the magnetic field on B{sup 0} and D{sup 0} mesons, focusing on the changes of the energy levels and of the mass of the bound states.

Machado, C. S.; Navarra, F. S.; Noronha, J.; Oliveira, E. G. [Instituto de Fisica, Universidade de Sao Paulo Rua do Matao, Travessa R, 187, 05508-090 Sao Paulo, SP (Brazil); Ferreira Filho, L. G. [Departamento de Matematica e Computacao, Faculdade de Tecnologia, Universidade do Estado do Rio de Janeiro Rodovia Presidente Dutra, km 298, Polo Industrial, CEP 27537-000, Resende, RJ (Brazil)

2013-03-25T23:59:59.000Z

390

Variable-field permanent magnet dipole  

SciTech Connect

A new concept for a variable-field permanent-magnet dipole (VFPMD) has been designed, fabricated, and tested at Los Alamos. The VFPMD is a C-shaped sector magnet with iron poles separated by a large block of magnet material (SmCo). The central field can be continuously varied from 0.07 T to 0.3 T by moving an iron shunt closer or further away from the back of the magnet. The shunt is specially shaped to make the dependence of the dipole field strength on the shunt position as linear as possible. The dipole has a 2.8 cm high by 8 cm wide aperture with {approximately}10 cm long poles.

Barlow, D.B.; Kraus, R.H. Jr.; Meyer, R.E.

1993-10-01T23:59:59.000Z

391

Viscosity, Black Holes, and Quantum Field Theory  

E-Print Network (OSTI)

We review recent progress in applying the AdS/CFT correspondence to finite-temperature field theory. In particular, we show how the hydrodynamic behavior of field theory is reflected in the low-momentum limit of correlation functions computed through a real-time AdS/CFT prescription, which we formulate. We also show how the hydrodynamic modes in field theory correspond to the low-lying quasinormal modes of the AdS black p-brane metric. We provide a proof of the universality of the viscosity/entropy ratio within a class of theories with gravity duals and formulate a viscosity bound conjecture. Possible implications for real systems are mentioned.

D. T. Son; A. O. Starinets

2007-04-02T23:59:59.000Z

392

A field laboratory for improved oil recovery  

SciTech Connect

The purpose of Annex III of the Memorandum of Understanding, undertaken by the Houston Petroleum Research Center at the University of Houston, was to develop a field laboratory for research in improved oil recovery using a Gulf Coast reservoir in Texas. The participants: (1) make a field site selection and conducted a high resolution seismic survey in the demonstration field, (2) obtained characteristics of the reservoir (3) developed an evaluation of local flood efficiency in different parts of the demonstration reservoir, (4) used diverse methodology to evaluate the potential recovery of the remaining oil in the test reservoir, (5) developed cross-well seismic tomography, and (6) will transfer the learned technologies to oil operators through publication and workshops. This abstract is an overview of these tasks.

Hildebrandt, A.F.; McDonald, J.; Claridge, E.; Killough, J.

1992-09-01T23:59:59.000Z

393

Review: Magnetic fields of O stars  

E-Print Network (OSTI)

Since 2002, strong, organized magnetic fields have been firmly detected at the surfaces of about 10 Galactic O-type stars. In this paper I will review the characteristics of the inferred fields of individual stars, as well as the overall population. I will discuss the extension of the 'magnetic desert', first inferred among the A-type stars, to O stars up to 60 solar masses. I will discuss the interaction of the winds of the magnetic stars with the fields above their surfaces, generating complex 'dynamical magnetosphere' structures detected in optical and UV lines, and in X-ray lines and continuum. Finally, I will discuss the detection of a small number of variable O stars in the LMC and SMC that exhibit spectral characteristics analogous to the known Galactic magnetic stars, and that almost certainly represent the first known examples of extra-Galactic magnetic stars.

Wade, G A

2014-01-01T23:59:59.000Z

394

The ESRF Miniature Pulsed Magnetic Field System  

SciTech Connect

We have developed a portable system to provide pulsed magnetic fields on the ESRF X-ray beamlines. The complete system consists of a power supply, liquid Helium and liquid Nitrogen dewars with a siphon each, control electronics and a double cryostat for separate coil and sample cooling. The liquid nitrogen cooled solenoids reach a maximum field of 30 Tesla for a total pulse duration of one milisecond. They are constructed for optimised cooling rate after the pulse to obtain a high duty cycle, the repetition rate is five pulses per minute at maximum field. The sample is cooled in an independent Helium flow cryostat which is inserted into the bore of the magnet. The flow cryostat has a temperature range from 5 to 250 Kelvin with a direct contact between the sample and Helium flow. This overview gives a general presentation of the system and we will show recent results.

Linden, Peter J. E. M. van der; Strohm, Cornelius; Roth, Thomas; Detlefs, Carsten; Mathon, Olivier [ESRF, 6 rue Jules Horowitz, F-38043 Grenoble (France)

2010-06-23T23:59:59.000Z

395

Electric field controlled emulsion phase contactor  

DOE Patents (OSTI)

A system is described for contacting liquid phases comprising a column for transporting a liquid phase contacting system, the column having upper and lower regions. The upper region has a nozzle for introducing a dispersed phase and means for applying thereto a vertically oriented high intensity pulsed electric field. This electric field allows improved flow rates while shattering the dispersed phase into many micro-droplets upon exiting the nozzle to form a dispersion within a continuous phase. The lower region employs means for applying to the dispersed phase a horizontally oriented high intensity pulsed electric field so that the dispersed phase undergoes continuous coalescence and redispersion while being urged from side to side as it progresses through the system, increasing greatly the mass transfer opportunity. 5 figs.

Scott, T.C.

1995-01-31T23:59:59.000Z

396

Applied Field Research Initiative Deep Vadose Zone  

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

Applied Field Research Initiative Applied Field Research Initiative Deep Vadose Zone Located on the Hanford Site in Richland, Washington, the Deep Vadose Zone Applied Field Research Initiative (DVZ AFRI) was established to protect water resources by addressing the challenge of preventing contamination in the deep vadose zone from reaching groundwater. Led by the Pacific Northwest National Laboratory, the Initiative is a collaborative effort that leverages Department of Energy (DOE) investments in basic science and applied research and the work of site contractors to address the complex deep vadose zone contamination challenges. Challenge Many vadose zone environments within the DOE complex consist of complex stratified layers of unconsolidated and water-unsaturated sediments that are, in many places, con-

397

Frustrated total internal reflection acoustic field sensor  

DOE Patents (OSTI)

A frustrated total internal reflection acoustic field sensor which allows the acquisition of the acoustic field over an entire plane, all at once. The sensor finds use in acoustic holography and acoustic diffraction tomography. For example, the sensor may be produced by a transparent plate with transparent support members tall enough to support one or more flexible membranes at an appropriate height for frustrated total internal reflection to occur. An acoustic wave causes the membrane to deflect away from its quiescent position and thus changes the amount of light that tunnels through the gap formed by the support members and into the membrane, and so changes the amount of light reflected by the membrane. The sensor(s) is illuminated by a uniform tight field, and the reflection from the sensor yields acoustic wave amplitude and phase information which can be picked up electronically or otherwise.

Kallman, Jeffrey S. (Pleasanton, CA)

2000-01-01T23:59:59.000Z

398

THE DEEP SWIRE FIELD. III. WIYN SPECTROSCOPY  

SciTech Connect

We present the results of spectroscopy using HYDRA on the WIYN 3.5 m telescope of objects in the deep SWIRE radio field. The goal of the project was to determine spectroscopic redshifts for as many of the brighter objects in the field as possible, especially those detected in the radio and at 24 {mu}m. These redshifts are primarily being used in studies of galaxy evolution and the connection of that evolution to active galactic nuclei and star formation. Redshifts measured for 365 individual objects are reported. The redshifts range from 0.03 to 2.5, mostly with z < 0.9. The sources were selected to be within the WIYN HYDRA field of approximately 30' in radius from the center of the SWIRE deep field, 10{sup h}46{sup m}00{sup s}, 59{sup 0}01'00'' (J2000). Optical sources for spectroscopic observation were selected from an r-band image of the field. A priority list of spectroscopic targets was established in the following order: 20 cm detections, 24 m detections, galaxies with r < 20 and the balance made up of fainter galaxies in the field. We provide a table listing the galaxy positions, measured redshift and error, and note any emission lines that were visible in the spectrum. In practice, almost all the galaxies with r < 19 were observed including all of the radio sources and most of the 24 {mu}m sources with r < 20 and a sample of radio sources which had fainter optical counterparts on the r-band image.

Owen, Frazer N. [National Radio Astronomy Observatory , P.O. Box O, Socorro, NM 87801 (United States); Morrison, G. E. [Institute for Astronomy, University of Hawaii, Honolulu, 96822 (United States)], E-mail: fowen@nrao.edu

2009-06-15T23:59:59.000Z

399

Property:WellFieldParasiticConsump | Open Energy Information  

Open Energy Info (EERE)

Name WellFieldParasiticConsump Property Type Number Description Well-Field Parasitic Consumption (MWh). Pages using the property "WellFieldParasiticConsump" Showing 2 pages using...

400

Electric Field Control of Ferromagnetism and Magnetic Devices Using Multiferroics  

E-Print Network (OSTI)

4 Electric field control of ferromagnetism: In-plane5 Electric field control of ferromagnetism: out-of-plane6.3.3 Electric field control of spin valve resistance

Heron, John Thomas

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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

Electric field directed self assembly of nanoparticle structures  

E-Print Network (OSTI)

and Heller, M.J. (2007) Electric-field-directed assembly ofOF THE DISSERTATION Electric Field Directed Self Assembly ofof colloidal particles by electric fields. Soft Matter, 2,

Dehlinger, Dietrich Alexander

2008-01-01T23:59:59.000Z

402

Average East-West Inclinations of Surface Magnetic Field Lines  

Science Journals Connector (OSTI)

The east-west component of the inclination to the vertical of magnetic field lines of fields measured at the photospheric level is calculated ... and as a function of latitude. These fields represent mostly non-s...

Robert F. Howard

1994-01-01T23:59:59.000Z

403

Field testing of waste forms using lysimeters  

SciTech Connect

The Low-Level Waste Data Base Development - EPICOR-II Resin/Liner Investigation Program funded by the US Nuclear Regulatory Commission is obtaining information on performance of radioactive waste in a disposal environment. Waste forms manufactured from ion exchange resins used to clean up water from the accident at Three Mile Island Nuclear Power Station are being examined in field tests. This paper presents a description of the field testing and results from the first year of operation. 8 refs., 8 figs., 4 tabs.

McConnell, J.W. Jr.; Rogers, R.D.

1987-01-01T23:59:59.000Z

404

Local-field factors in cubic crystals  

Science Journals Connector (OSTI)

The local-field factors at an atomic site are calculated in the electric-dipole approximation for monatomic and diatomic cubic lattices. Their symmetry relations are deduced from thermodynamics, and an explicit computation as a function of the electronic delocalization is performed in several usual cases within the linear-screening approximation. Then the effective field undergone by an elementary excitation of the crystal (phonon, exciton) is investigated. A comparison is made with Hopfield's model concerning Frenkel's excitons, and with the Born and Huang theory of the infrared dielectric properties of ionic crystals.

R. Bonneville

1980-01-15T23:59:59.000Z

405

Response of plastic scintillators in magnetic fields  

SciTech Connect

The dependence of the light yield on magnetic field has been measured up to 0.45 T for the plastic scintillators NE-102A, SCSN-38 and Polivar. The scintillators were excited by 25 MeV protons, 5.9 keV X-rays and UV light. When excited with ionizing radiation an increase of light yield is observed. For SCSN-38 of 2.7 mm thickness it amounts to 0.3%, 0.9%, 1.1% and 3.3% at 1, 10, 100 and 450 mT respectively. NE-102A behaves similar, whereas a PMMA based scintillator shows a stronger field dependence.

Blomker, D.; Holm, V. (Inst. Experimentalphysik, Universitat Hamburg, Luruper Chaussee 149, D-2000 Hamburg 50 (DE)); Klanner, R.; Krebs, B. (Deutsches Elektronen-Synchroton, Notkstr. 85, D-2000 Hamburg 52 (DE))

1990-04-01T23:59:59.000Z

406

Gaussian random field models of aerogels  

Science Journals Connector (OSTI)

A model capable of predicting pore characteristics and rendering representative images of porous materials is described. A long-term goal is to discriminate between open and closed porosities. Aerogels are modeled by intersecting excursion sets of two independent Gaussian random fields. The parameters of these fields are obtained by matching small-angle neutron scattering data with the scattering function for the model. The chord-length probability density functions are then computed for the model which contain partial clustering information for the aerogels. Visualizations of this model are performed and compared to electron microscopy images and gas adsorption pore size distributions.

J. Quintanilla; R. F. Reidy; B. P. Gorman; D. W. Mueller

2003-01-01T23:59:59.000Z

407

Field and laboratory investigations of selenium transformation  

SciTech Connect

This quarterly report discusses the preparation and results of a field investigation of a selected coal mine site in Oklahoma. The field investigation has been on-going since July 1990. An analysis of this data would be useful in providing information for potential Se mobility from a coal mine site and the distribution of Se in a soil profile of reclaimed land. Also, included is the investigation and preliminary results of SeO{sub 3}{sup 2{minus}} adsorption and desorption using different soil media, including coal mine spoils (overburden).

Atalay, A.; Koll, K.J.

1990-12-01T23:59:59.000Z

408

Magnetic-field variance in layered superconductors  

Science Journals Connector (OSTI)

In highly anisotropic or layered high-Tc superconductors with magnetic field along the c axis, both pinning-caused and thermal fluctuations of the highly flexible vortex cores, or of chains of vortex dots, threading the cuperconducting layers may drastically reduce the variance ? of the magnetic-field fluctuation. In contrast, the fluctuations of the averaged flux lines (smoothed over the in-plane penetration depth ?) increase ?. As a consequence, muon-spin-rotation lines may be sharpened not only the thermal motional narrowing, but also by pinning-caused static disorder.

Ernst Helmut Brandt

1991-06-17T23:59:59.000Z

409

Complementary junction heterostructure field-effect transistor  

DOE Patents (OSTI)

A complimentary pair of compound semiconductor junction heterostructure field-effect transistors and a method for their manufacture are disclosed. The p-channel junction heterostructure field-effect transistor uses a strained layer to split the degeneracy of the valence band for a greatly improved hole mobility and speed. The n-channel device is formed by a compatible process after removing the strained layer. In this manner, both types of transistors may be independently optimized. Ion implantation is used to form the transistor active and isolation regions for both types of complimentary devices. The invention has uses for the development of low power, high-speed digital integrated circuits. 10 figs.

Baca, A.G.; Drummond, T.J.; Robertson, P.J.; Zipperian, T.E.

1995-12-26T23:59:59.000Z

410

Scalar Field Dark Matter and Galaxy Formation  

E-Print Network (OSTI)

We present a general description of the scalar field dark matter (SFDM) hypothesis in the cosmological context. The scenario of structure formation under such a hypothesis is based on Jeans instabilities of fluctuations of the scalar field. It is shown that it is possible to form stable long lived objects consisting of a wide range of typical galactic masses around $10^{12}M_{\\odot}$ once the parameters of the effective theory are fixed with the cosmological constraints. The energy density at the origin of such an object is smooth as it should.

Miguel Alcubierre; F. Siddhartha Guzman; Tonatiuh Matos; Dario Nunez; L. Arturo Urena-Lopez; Petra Wiederhold

2002-04-18T23:59:59.000Z

411

The Speed of Light as a Dilaton Field  

E-Print Network (OSTI)

Through dimensional analysis, eliminating the physical time, we identify the speed of light as a dilaton field. This leads to a restmass zero, spin zero gauge field which we call the speedon field. The complete Lagrangian for gravitational, electromagnetic and speedon field interactions with a charged scalar field, representing matter, is given. We then find solutions for the gravitational-electromagnetic-speedon field equations. This then gives an expression for the speed of light.

Walter Wyss

1997-11-20T23:59:59.000Z

412

MAGNETIC FIELD CONFINEMENT IN THE SOLAR CORONA. II. FIELD-PLASMA INTERACTION B. Fornberg,2  

E-Print Network (OSTI)

MAGNETIC FIELD CONFINEMENT IN THE SOLAR CORONA. II. FIELD-PLASMA INTERACTION N. Flyer,1 B. Fornberg numerically to generate a continuum of solutions with two parameters to control the total azimuthal flux from the study to the solar corona and the energetics of coronal mass ejections and flares. Subject

Fornberg, Bengt

413

ECE 390 Electric & Magnetic Fields Catalog Description: Static and quasi-static electric and magnetic fields.  

E-Print Network (OSTI)

ECE 390 ­ Electric & Magnetic Fields Catalog Description: Static and quasi-static electric), A. Jander (secondary) Course Content: · Introduction, review of vector analysis · Static electric fields in free space: Coulomb's law, Gauss's law, and electric potential, electric dipole · Static

414

Influence of the pulsating electric field on the ECR heating in a nonuniform magnetic field  

SciTech Connect

According to a computer simulation, the randomized pulsating electric field can strongly influence the ECR plasma heating in a nonuniform magnetic field. It has been found out that the electron energy spectrum is shifted to the high energy region. The obtained effect is intended to be used in the ECR sources for effective X-ray generation.

Balmashnov, A. A., E-mail: abalmashnov@sci.pfu.edu.ru; Umnov, A. M. [People's Friendship University of Russia (Russian Federation)

2011-12-15T23:59:59.000Z

415

Remediation of Mercury and Industrial Contaminants Applied Field...  

Office of Environmental Management (EM)

Remediation of Mercury and Industrial Contaminants Applied Field Research Initiative (RoMIC-AFRI) Remediation of Mercury and Industrial Contaminants Applied Field Research...

416

Impact of Real Field Diesel Quality Variability on Engine Emissions...  

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

Real Field Diesel Quality Variability on Engine Emissions and Fuel Consumption Solutions for Onboard Optimisation Impact of Real Field Diesel Quality Variability on Engine...

417

PIA - IComplaints - Golden Field Office | Department of Energy  

Energy Savers (EERE)

Field Office PIA - IComplaints - Golden Field Office More Documents & Publications PIA - INL PeopleSoft - Human Resource System PIA - Human Resources - Personal Information Change...

418

RAPID/Geothermal/Well Field/California | Open Energy Information  

Open Energy Info (EERE)

& Well Field Permit Agency: California Department of Conservation, Division of Oil, Gas, and Geothermal Resources Drilling & Well Field Permit Before drilling can commense,...

419

Cathodoluminescence from a device of carbon nanotube-field emission...  

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

Cathodoluminescence from a device of carbon nanotube-field emission display with ZnO nanocluster phosphor. Cathodoluminescence from a device of carbon nanotube-field emission...

420

Characterizing Fractures in the Geysers Geothermal Field by Micro...  

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

Geothermal Field by Micro-seismic Data, Using Soft Computing, Fractals, and Shear Wave Anisotropy Characterizing Fractures in the Geysers Geothermal Field by Micro-seismic...

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


421

Measurement of advective soil gas flux: Results of field and...  

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

Measurement of advective soil gas flux: Results of field and laboratory experiments with CO2. Measurement of advective soil gas flux: Results of field and laboratory experiments...

422

National High Magnetic Field Laboratory: Museum of Electricity...  

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

chemistry. Related Electricity & Magnetism Pages Interactive Java Tutorials: Magnetic Field Lines Around a Wire Interactive Java Tutorials: Magnetic Field Lines Around a Wire, II...

423

National High Magnetic Field Laboratory: Museum of Electricity...  

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

Pages Interactive Java Tutorials: Galvanometer Interactive Java Tutorials: Magnetic Field Lines Around a Wire, I Interactive Java Tutorials: Magnetic Field Lines Around a Wire,...

424

National High Magnetic Field Laboratory - Science Starts Here...  

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

a better and much more productive scientist. I had the opportunity to learn unique high magnetic field experimental techniques from the top researchers in the field, in a...

425

2nd conference on Intense field- Short Wavelength Atomic and...  

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

nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2 2nd conference on Intense field- Short Wavelength Atomic and Molecular Processes - ISWAMP2...

426

Upcoming Funding Opportunity to Develop and Field Test Wind Energy...  

Energy Savers (EERE)

Upcoming Funding Opportunity to Develop and Field Test Wind Energy Bat Impact Minimization Technologies Upcoming Funding Opportunity to Develop and Field Test Wind Energy Bat...

427

Summary of Test Results for the Interagency Field Test &Evaluation...  

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

Summary of Test Results for the Interagency Field Test &Evaluation of Wind Turbine - Radar Interference Mitigation Technologies Summary of Test Results for the Interagency Field...

428

Project Impact Assessments: Building America FY14 Field Test...  

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

Project Impact Assessments: Building America FY14 Field Test Technical Support - 2014 BTO Peer Review Project Impact Assessments: Building America FY14 Field Test Technical Support...

429

SMART Wind Turbine Rotor: Design and Field Test | Department...  

Energy Savers (EERE)

Design and Field Test SMART Wind Turbine Rotor: Design and Field Test This report documents the design, fabrication, and testing of the SMART Wind Turbine Rotor. This work...

430

Carlsbad Industrial Safety and Health PIA, Carlsbad Field Offce...  

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

Carlsbad Industrial Safety and Health PIA, Carlsbad Field Offce Carlsbad Industrial Safety and Health PIA, Carlsbad Field Offce Carlsbad Industrial Safety and Health PIA, Carlsbad...

431

National High Magnetic Field Laboratory: Museum of Electricity...  

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

strength of a magnetic field. He also made significant contributions to our understanding of the Earth's magnetic field. Related Electricity & Magnetism Pages Timeline: 1830 - 18...

432

National High Magnetic Field Laboratory: Museum of Electricity...  

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

of the Earths magnetic field to the research community. Related Electricity & Magnetism Pages Interactive Java Tutorials: Compasses in Magnetic Fields Interactive Java...

433

Field Mapping At Dixie Valley Geothermal Area (Smith, Et Al....  

Open Energy Info (EERE)

Field Mapping At Dixie Valley Geothermal Area (Smith, Et Al., 2001) Exploration Activity Details Location Dixie Valley Geothermal Area Exploration Technique Field Mapping Activity...

434

Plasmon-Induced Optical Field Enhancement studied by Correlated...  

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

Plasmon-Induced Optical Field Enhancement studied by Correlated Scanning and Photoemission Electron Microscopy. Plasmon-Induced Optical Field Enhancement studied by Correlated...

435

Probing Molecular Associations of Field-Collected and Laboratory...  

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

Molecular Associations of Field-Collected and Laboratory-Generated SOA with Nano-DESI High-Resolution Mass Spectrometry. Probing Molecular Associations of Field-Collected and...

436

Reducing fuel consumption on the field, by continuously measuring...  

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

fuel consumption on the field, by continuously measuring fuel quality on electronically fuel injected engines. Reducing fuel consumption on the field, by continuously measuring...

437

National High Magnetic Field Laboratory Audio Dictionary: Magnetic...  

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

Links Magnets from Mini to Mighty Meet the Magnets How to Make an Electromagnet (audio slideshow) Compasses in Magnetic Fields (interactive tutorial) Magnetic Field Around a...

438

Nuclear energy field fascinates David Parkinson, chemical engineer  

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

Nuclear energy field fascinates David Parkinson, chemical engineer Nuclear energy field fascinates David Parkinson, chemical engineer Chemical engineer undergraduate designs and...

439

Triangular Ising antiferromagnet in a staggered field  

Science Journals Connector (OSTI)

We study the equilibrium properties of the nearest-neighbor Ising antiferromagnet on a triangular lattice in the presence of a staggered field conjugate to one of the degenerate ground states. Using a mapping of the ground states of the model without the staggered field to dimer coverings on the dual lattice, we classify the ground states into sectors specified by the number of strings. We show that the effect of the staggered field is to generate long-range interactions between strings. In the limiting case of the antiferromagnetic coupling constant J becoming infinitely large, we prove the existence of a phase transition in this system and obtain a finite lower bound for the transition temperature. For finite J, we study the equilibrium properties of the system using Monte Carlo simulations with three different dynamics. We find that in all the three cases, equilibration times for low-field values increase rapidly with system size at low temperatures. Due to this difficulty in equilibrating sufficiently large systems at low temperatures, our finite-size scaling analysis of the numerical results does not permit a definite conclusion about the existence of a phase transition for finite values of J. A surprising feature in the system is the fact that unlike usual glassy systems, a zero-temperature quench almost always leads to the ground state, while a slow cooling does not.

Abhishek Dhar; Pinaki Chaudhuri; Chandan Dasgupta

2000-03-01T23:59:59.000Z

440

Hard thermal loops in static external fields  

E-Print Network (OSTI)

We study, in the imaginary-time formalism, the high temperature behavior of n-point thermal loops in static Yang-Mills and gravitational fields. We show that in this regime, any hard thermal loop gives the same leading contribution as the one obtained by evaluating the loop at zero external energies and momenta.

J. Frenkel; S. H. Pereira; N. Takahashi

2009-02-04T23:59:59.000Z

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


441

Cavity Field Reconstruction at Finite Temperature  

E-Print Network (OSTI)

We present a scheme to reconstruct the quantum state of a field preparedinside a lossy cavity at finite temperature. Quantum coherences are normallydestroyed by the interaction with an environment, but we show that it ispossible to recover complete information about the initial state (beforeinteraction with its environment), making possible to reconstruct any$s$-parametrized quasiprobability distribution, in particular, the Wignerfunction.

Moya-Cessa, H; Tombesi, P; Roversi, J A

2000-01-01T23:59:59.000Z

442

ORNL/CON-499 TEXAS FIELD EXPERIMENT  

E-Print Network (OSTI)

ORNL/CON-499 TEXAS FIELD EXPERIMENT: Performance of the Weatherization Assistance Program in Hot of the Weatherization Assistance Program in Hot-Climate, Low-Income Homes Lance McCold Richard Goeltz Mark Ternes Linda Berry Date Published: April 2008 Prepared for U.S. Department of Energy Office of Weatherization

Pennycook, Steve

443

Green field planning of distribution systems  

Science Journals Connector (OSTI)

It as an evident that the everyday life is basically based on electric power. Electric power networks provide the required power to the customers. However as greater amounts of power are daily demanded, the need for the construction of new networks or ... Keywords: energy transmission, green field approach, power demand, power loss, power system modelling, voltage drop

S. Hadjiionas; D. S. Oikonomou; G. P. Fotis; V. Vita; L. Ekonomou; C. Pavlatos

2009-05-01T23:59:59.000Z

444

Evaluating stream predicates over dynamic fields  

Science Journals Connector (OSTI)

Technological advances have created an unprecedented availability of inexpensive sensors able to stream environmental data in real-time. However, we still seek appropriate data management technology capable of handling this onslaught of sampling in previously ... Keywords: continuous phenomena, data streams system, fields, sensor data streams

J. C. Whittier, Qinghan Liang, Silvia Nittel

2014-11-01T23:59:59.000Z

445

DENSITY FUNCTIONAL THEORY OF FIELD THEORETICAL SYSTEMS  

E-Print Network (OSTI)

DENSITY FUNCTIONAL THEORY OF FIELD THEORETICAL SYSTEMS E. Engel Inst. fur Theor. Physik background of relativistic density functional theory is emphasized and its consequences for relativistic Kohn-Sham equations are shown. The local density approximation for the exchange energy functional is reviewed

Engel, Eberhard

446

Electro-Mechanical Resonant Magnetic Field Sensor  

E-Print Network (OSTI)

We describe a new type of magnetic field sensor which is termed an Electro-Mechanical Resonant Sensor (EMRS). The key part of this sensor is a small conductive elastic element with low damping rate and therefore a high Q fundamental mode of frequency $f_1$. An AC current is driven through the elastic element which, in the presence of a magnetic field, causes an AC force on the element. When the frequency of the AC current matches the resonant frequency of the element, maximum vibration of the element occurs and this can be measured precisely by optical means. We have built and tested a model sensor of this type using for the elastic element a length of copper wire of diameter 0.030 mm formed into a loop shape. The wire motion was measured using a light emitting diode photo-transistor assembly. This sensor demonstrated a sensitivity better than 0.001G for an applied magnetic field of $ \\sim 1$G and a good selectivity for the magnetic field direction. The sensitivity can be easily improved by a factor of $\\sim ...

Temnykh, A B; Temnykh, Alexander B.; Lovelace, Richard V. E.

2002-01-01T23:59:59.000Z

447

Cryogenic Magnet Could Open New Fields  

Science Journals Connector (OSTI)

Now that its cryogenic superconducting magnet is commercially available (C&EN, Jan. 15, page 43), Westinghouse Electric expects the magnet to open up new areas of high-field magnet research with possible use in magnetohydrodynamics, thermonuclear fusion, and cryogenic devices. ...

1962-01-22T23:59:59.000Z

448

Prequantum Classical Statistical Field Theory: Fundamentals  

SciTech Connect

We present fundamentals of a prequantum model with hidden variables of the classical field type. In some sense this is the comeback of classical wave mechanics. Our approach also can be considered as incorporation of quantum mechanics into classical signal theory. All quantum averages (including correlations of entangled systems) can be represented as classical signal averages and correlations.

Khrennikov, Andrei [International Center for Mathematical Modelling in Physics and Cognitive Sciences, Linnaeus University, Vaexjoe, S-35195 (Sweden)

2011-03-28T23:59:59.000Z

449

PROJECT REPORT COOLERADO H80 FIELD REPORT  

E-Print Network (OSTI)

the UC Davis Energy Efficiency Center in 2007 through a grant from the California Clean Energy FundPROJECT REPORT COOLERADO H80 FIELD REPORT University House at UC Davis & Embry-Riddle Aeronautical.0 About the Technology 5 3.0 Demonstration at University House, UC Davis 6 3.1 Results 6 4.0 Demonstration

California at Davis, University of

450

Field Inspection Guidelines for PV Systems  

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

This 2010 update to the 2006 edition consolidates the most import aspects of a field inspection into a simple process that can be performed in as little as 15 minutes. Explanations and illustrative pictures are included to instruct the inspector on the specific details of each step.

451

On the Quintessence Scalar Field Potential  

E-Print Network (OSTI)

In this work we propose a new analytical method for determining the scalar field potential $V(\\phi)$ in FRW type cosmologies containing a mixture of perfect fluid plus a quintessence scalar field. By assuming that the equation of state parameters of the perfect fluid, $\\gamma -1 \\equiv p_{\\gamma}/\\rho_{\\gamma}$ and the quintessence, $\\omega \\equiv p/\\rho$ are constants, it is shown that the potential for the flat case is $V(\\phi) = A\\rho_{\\phi_{0}}\\sinh^{B}(\\lambda \\phi)$, where $A$, $B$ and $\\lambda$ are functions of $\\gamma$ and $\\omega$. This general result is a pure consequence of the Einstein field equations and the constancy of the parameters. Applying the same method for closed and open universes, the corresponding scalar field potentials are also explicitly obtained for a large set of values of the free parameters $\\gamma$ and $\\omega$. A formula yielding the transition redshift from a decelerating to an accelerating regime is also determined and compared to the $\\Lambda$CDM case.

J. A. Espichn Carrillo; J. M. Silva; J. A. S. Lima

2008-06-20T23:59:59.000Z

452

MRS photodiode in strong magnetic field  

SciTech Connect

The experimental results on the performance of the MRS (Metal/Resistor/Semiconductor) photodiode in the strong magnetic field of 4.4T, and the possible impact of the quench of the magnet at 4.5T on sensor's operation are reported.

Beznosko, D.; Blazey, G.; Dyshkant, A.; Francis, K.; Kubik, D.; Rykalin, V.; /Northern Illinois U.; Tartaglia, M.A.; /Fermilab; Zutshi, v.; /Northern Illinois U.

2004-12-01T23:59:59.000Z

453

Liquid Crystals in Electric Field Akira ONUKI  

E-Print Network (OSTI)

in an electric field. To treat such problems we need to construct a Ginzburg­Landau free energy including around a neutral colloid particle or emulsion droplet has been extensively studied,5,6) where the surface anchoring of a neutral particle can be achieved for a large radius because the penalty of the Frank free

454

Muon decay in a laser field  

Science Journals Connector (OSTI)

We investigate the change in the decay rate of a muon caused by embedding it in the field of a laser. A previous paper found that the change could be large, as much as an order of magnitude. We find the more intuitive result that the change is small and give analytic expressions for the small corrections.

Duane A. Dicus; Arsham Farzinnia; Wayne W. Repko; Todd M. Tinsley

2009-01-12T23:59:59.000Z

455

Gallium nitride junction field-effect transistor  

DOE Patents (OSTI)

An all-ion implanted gallium-nitride (GaN) junction field-effect transistor (JFET) and method of making the same. Also disclosed are various ion implants, both n- and p-type, together with or without phosphorous co-implantation, in selected III-V semiconductor materials.

Zolper, John C. (Albuquerque, NM); Shul, Randy J. (Albuquerque, NM)

1999-01-01T23:59:59.000Z

456

AUTOMATED CRITICAL PEAK PRICING FIELD TESTS  

E-Print Network (OSTI)

AUTOMATED CRITICAL PEAK PRICING FIELD TESTS: 2006 PROGRAM DESCRIPTION AND RESULTS) for development of the DR Automation Server System This project could not have been completed without extensive: Greg Watson and Mark Lott · C&C Building Automation: Mark Johnson and John Fiegel · Chabot Space

457

Gallium nitride junction field-effect transistor  

DOE Patents (OSTI)

An ion implanted gallium-nitride (GaN) junction field-effect transistor (JFET) and method of making the same are disclosed. Also disclosed are various ion implants, both n- and p-type, together with or without phosphorus co-implantation, in selected III-V semiconductor materials. 19 figs.

Zolper, J.C.; Shul, R.J.

1999-02-02T23:59:59.000Z

458

A microsystems enabled field desorption source.  

SciTech Connect

Technologies that have been developed for microelectromechanical systems (MEMS) have been applied to the fabrication of field desorption arrays. These techniques include the use of thick films for enhanced dielectric stand-off, as well as an integrated gate electrode. The increased complexity of MEMS fabrication provides enhanced design flexibility over traditional methods.

Hertz, Kristin L.; Resnick, Paul James; Schwoebel, Paul R. (University of New Mexico, Albuquerque, NM); Holland, Christopher E. (SRI International, Menlo Park, CA); Chichester, David L. (Idaho National Laboratory, Idaho Falls, ID)

2010-07-01T23:59:59.000Z

459

Department of Energy Carlsbad Field Office  

E-Print Network (OSTI)

. In addition DOE has identified an error made in two previous responses to questions C-23-1 and C-23Department of Energy Carlsbad Field Office P. O. Box 3090 Carlsbad, New Mexico 88221 December 23.S. Department of Energy (DOE) is providing information that 'answers some of the questions included

460

Department of Energy Carlsbad Field Office  

E-Print Network (OSTI)

Department of Energy Carlsbad Field Office P. O. Box 3090 Carlsbad, New Mexico 88221 JAN 21 aIJ9-certification of shielded containers by the U.S. Department of Energy (DOE). Regulatory Basis for Self-Certification by DOE Type B packages. The U.S. Nuclear RegUlatory Commission (NRC) must certify each Type B package and its

Note: This page contains sample records for the topic "abu safah field" 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

Department of Energy Carlsbad Field Office  

E-Print Network (OSTI)

Department of Energy Carlsbad Field Office P. O. Box 3090 Carlsbad, New Mexico 88221 NOV 2 5 that newly released thermodynamic data in the literature (e.g. the NEA (Nuclear Energy Agency) data base.S. Department of Energy (DOE) is providing information that answers some of the questions included

462

Electric Field Imaging Joshua Reynolds Smith  

E-Print Network (OSTI)

Reynolds Smith Submitted to the Program in Media Arts and Sciences, School of Architecture and PlanningElectric Field Imaging by Joshua Reynolds Smith B.A., Williams College 1991 S.M., Massachusetts Institute of Technology 1995 M.A., University of Cambridge 1997 Submitted to the Program in Media Arts

Herr, Hugh

463

Hidden Costs of Energy Chris Field  

E-Print Network (OSTI)

Hidden Costs of Energy NRC: 2010 Chris Field Carnegie Institution: Department of Global Ecology www.global-ecology.org #12;What are the real costs of energy? · Health · Environment · Conflict and security · Infrastructure #12;What are the real costs of energy? · Unpriced components · Production · Distribution · Consumption

Kammen, Daniel M.

464

GRAVITATIONAL FIELD SHIELDING AND SUPERNOVA EXPLOSIONS  

SciTech Connect

A new mechanism for supernova explosions called gravitational field shielding is proposed, in accord with a five-dimensional fully covariant Kaluza-Klein theory with a scalar field that unifies the four-dimensional Einsteinian general relativity and Maxwellian electromagnetic theory. It is shown that a dense compact collapsing core of a star will suddenly turn off or completely shield its gravitational field when the core collapses to a critical density, which is inversely proportional to the square of mass of the core. As the core suddenly turns off its gravity, the extremely large pressure immediately stops the core collapse and pushes the mantle material of supernova moving outward. The work done by the pressure in the expansion can be the order of energy released in a supernova explosion. The gravity will resume and stop the core from a further expansion when the core density becomes less than the critical density. Therefore, the gravitational field shielding leads a supernova to impulsively explode and form a compact object such as a neutron star as a remnant. It works such that a compressed spring will shoot the oscillator out when the compressed force is suddenly removed.

Zhang, T. X. [Physics Department, Alabama A and M University, Normal, AL 35762 (United States)

2010-12-20T23:59:59.000Z

465

Field Devices for Monitoring Soil Water Content  

E-Print Network (OSTI)

.1. Volumetric Field Methods 2.1.1. Neutron Moderation 2.1.2. Dielectric Methods 2.1.2.1. Time Domain Reflectometry (TDR) 2.1.2.2. Frequency Domain (FD): Capacitance and FDR 2.1.2.3. Amplitude Domain Reflectometry

466

Hard thermal loops in static external fields  

SciTech Connect

We examine, in the imaginary-time formalism, the high temperature behavior of n-point thermal loops in static Yang-Mills and gravitational fields. We show that in this regime, any hard thermal loop gives the same leading contribution as the one obtained by evaluating the loop integral at zero external energies and momenta.

Frenkel, J.; Takahashi, N. [Universidade de Sao Paulo, Instituto de Fisica Rua do Matao, Travessa R, 187-05508-090 Cidade Universitaria, Sao Paulo, SP (Brazil); Pereira, S. H. [Universidade de Sao Paulo, Instituto de Astronomia, Geofisica e Ciencias Atmosfericas Rua do Matao, 1226-05508-090 Cidade Universitaria, Sao Paulo, SP (Brazil)

2009-04-15T23:59:59.000Z

467

Career Tracks Job Family Descriptions FIELD: COMMUNICATIONS  

E-Print Network (OSTI)

, is paramount. Includes website development, or producing communications or instruction using the web, audio. #12;23/1/2012 Career Tracks Job Family Descriptions FIELD: ENGINEERING Aerospace Engineering Involves engineering design and development of aerospace systems including scientific instruments for spacecraft

Westerling, Anthony L.

468

Magnetic Charge and Quantum Field Theory  

Science Journals Connector (OSTI)

A quantum field theory of magnetic and electric charge is constructed. It is verified to be relativistically invariant in consequence of the charge quantization condition eg?c=n, an integer. This is more restrictive than Dirac's condition, which would also allow half-integral values.

Julian Schwinger

1966-04-29T23:59:59.000Z

469

Airborne Doppler Lidar Wind Field Measurements  

Science Journals Connector (OSTI)

A coherent Doppler lidar has been used in an aircraft to measure the 2-dimensional wind field in a number of different atmospheric situations. The lidar, a pulsed CO2 system, was installed in the NASA Convair 990. Galileo II, and flown in a ...

J. Bilbro; G. Fichtl; D. Fitzjarrald; M. Krause; R. Lee

1984-04-01T23:59:59.000Z

470

Dynamic Effective-Field Scheme for Rare-Earth Systems  

Science Journals Connector (OSTI)

We demonstrate the importance of including the dynamical exchange-interaction term in the Hamiltonian of a rare-earth system. The probability distribution of the dynamic exchange field is derived in the molecular field approximation. The result is exemplified for the zero-field magnetization and crystal field spectroscopy of NdSb.

Albert Furrer and Heinz Heer

1973-11-26T23:59:59.000Z

471

http://sunearthday.nasa.gov Exploring Magnetic Field Lines  

E-Print Network (OSTI)

http://sunearthday.nasa.gov Exploring Magnetic Field Lines About this Activity When discussing". Left: Two participants tracing magnetic field lines. Below: Magnetic field line tracings of a bar more field lines. Public Outreach - Make and Take Activities What You'll Need Alnico bar magnets 1

472

Lesson Summary Students will learn about the magnetic fields of  

E-Print Network (OSTI)

Knowledge & Skills Understanding of: · Magnetic field lines · Magnetic field strength decreases class period Materials per student · NASA STERO mission story · Diagrams of the magnetic field linesLesson Summary Students will learn about the magnetic fields of the Sun and Earth. This activity

Mojzsis, Stephen J.

473

Presented by the National High Magnetic Field Laboratory  

E-Print Network (OSTI)

Magnets These lines show the magnetic field created by the bar magnet. Look, this magnetic field looks like an apple! Field Lines #12;Scientists at the Magnet Lab use a special kind of magnet calledPresented by the National High Magnetic Field Laboratory Learning About Name #12;A magnet

Weston, Ken

474

Description and Simulation of Gust Front Wind Field Lijuan Wanga  

E-Print Network (OSTI)

-stationarity of the wind field associated with these extreme events poses serious challenges in their modelingDescription and Simulation of Gust Front Wind Field Lijuan Wanga , Ahsan Kareemb a Nat front wind field is proposed based on the time-frequency description of the wind field. Traditionally

Kareem, Ahsan

475

Field Of?b, Oak Rldge  

Office of Legacy Management (LM)

Field Of?b, Oak Rldge Field Of?b, Oak Rldge P.O. Box 2001 Oak Ridge, Tennes~e 37831- 8723 April 20, 1993 Dr. Paul Merges Chief, Bureau of Radiation New York State Department of Environmental Conservation 50 Yolf Road Room 506 Albany, New York 12233-7255 Dear Dr. Merges: BAKER AND NILLIANS WRMOUSES SITE - CORPLETION OF CLEANUP ACTI(rIT1ES The purpose of this notice is to inform you about further scheduled cleanup activities to be conducted by the Department of Energy (DDE) at 513-519 West 20th Street In New York, New York. This property is one of three buildings that make up the site of the former Baker and Williams warehouses. Final remediation of this site by DDE is scheduled for flay and June 1993. I have enclosed for your Information a sumnary fact sheet describing these

476

In-Field Performance of Condensing Boilers  

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

IN-FIELD PERFORMANCE OF CONDENSING IN-FIELD PERFORMANCE OF CONDENSING BOILERS Lois B. Arena Steven Winter Associates, Inc. March 2012 Why Research Hydronic Heating? © 2012 Steven Winter Associates, Inc. All rights reserved Reasons to Research Boilers  Approx. 14 million homes (11%) in the US are heated with a steam or hot water system  Almost 70 percent of existing homes were built prior to 1980  Boilers built prior to 1980 generally have AFUE's of 0.65 or lower  Energy savings of 20+% are possible by simply replacing older boilers with standard boilers & up to 30% with condensing boilers.  Optimizing condensing boilers in new and existing homes could mean the difference of 8-10% savings with little to no

477

Field Projects: Durango, Colorado | Department of Energy  

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

Long-Term Surveillance - Operations and Maintenance Long-Term Surveillance - Operations and Maintenance » Permeable Reactive Barriers » Field Projects: Durango, Colorado Field Projects: Durango, Colorado Personnel from Sandia National Laboratories in New Mexico installed four permeable reactive barriers PRBs at the Durango, Colorado, Uranium Mill Tailings Radiation Control Act Title I site in October 1995. These PRBs are managed by LM. Foamed zero-valent (ZVI) iron bricks produced by Cercona of America, steel wool, and granular iron have been used as reactive media to remove ammonium, arsenic, cadmium, chromium, manganese, molybdenum, nitrate, radium-226, selenium, uranium, vanadium, and zinc contamination from leachate exiting the uranium mill tailings disposal cell. After passing through the ZVI, the leachate contaminant levels meet the

478

Field Projects: Monticello, Utah | Department of Energy  

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

Long-Term Surveillance - Operations and Maintenance Long-Term Surveillance - Operations and Maintenance » Permeable Reactive Barriers » Field Projects: Monticello, Utah Field Projects: Monticello, Utah A permeable reactive barrier (PRB) of zero-valent iron is helping to clean up groundwater at a former uranium and vanadium ore processing mill at Monticello, Utah. LM managed remediation of tailings and tailings-contaminated material at this site. Cleanup of the mill site is regulated under the Comprehensive Environmental Response, Compensation, and Liability Act. Arsenic, molybdenum, nitrate, selenium, uranium, and vanadium are contaminants of concern in groundwater at the site. An Interim Record of Decision designated emplacement of a PRB hydraulically downgradient of the mill site to remove these contaminants. Results of both laboratory and

479

Markov states of the quantum electromagnetic field  

Science Journals Connector (OSTI)

A translation-invariant state (a quantum Markov chain) is associated with a nearest-neighbor interaction on a one-dimensional lattice by a new technique which provides closed forms for all the correlation functions. When applied to an Ising-type perturbation of a chain of harmonic oscillators, the dynamics can be computed explicitly. The resulting translation-invariant distribution is substantially different from the Planck distribution when the temperature and the coupling constant are large. For the evolution of the field operators on a given mode, we obtain a natural nonlinear generalization of the theorem which states that the free evolution of the field operators is obtained by second quantization of the classical free evolution.

Luigi Accardi and Geoffrey S. Watson

1987-02-01T23:59:59.000Z

480

Integrated field emission array for ion desorption  

DOE Patents (OSTI)

An integrated field emission array for ion desorption includes an electrically conductive substrate; a dielectric layer lying over the electrically conductive substrate comprising a plurality of laterally separated cavities extending through the dielectric layer; a like plurality of conically-shaped emitter tips on posts, each emitter tip/post disposed concentrically within a laterally separated cavity and electrically contacting the substrate; and a gate electrode structure lying over the dielectric layer, including a like plurality of circular gate apertures, each gate aperture disposed concentrically above an emitter tip/post to provide a like plurality of annular gate electrodes and wherein the lower edge of each annular gate electrode proximate the like emitter tip/post is rounded. Also disclosed herein are methods for fabricating an integrated field emission array.

Resnick, Paul J; Hertz, Kristin L; Holland, Christopher; Chichester, David; Schwoebel, Paul

2013-09-17T23:59:59.000Z

Note: This page contains sample records for the topic "abu safah field" 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.


481

Modeling emotional dynamics : currency versus field.  

SciTech Connect

Randall Collins has introduced a simplified model of emotional dynamics in which emotional energy, heightened and focused by interaction rituals, serves as a common denominator for social exchange: a generic form of currency, except that it is active in a far broader range of social transactions. While the scope of this theory is attractive, the specifics of the model remain unconvincing. After a critical assessment of the currency theory of emotion, a field model of emotion is introduced that adds expressiveness by locating emotional valence within its cognitive context, thereby creating an integrated orientation field. The result is a model which claims less in the way of motivational specificity, but is more satisfactory in modeling the dynamic interaction between cognitive and emotional orientations at both individual and social levels.

Sallach, D .L.; Decision and Information Sciences; Univ. of Chicago

2008-08-01T23:59:59.000Z

482

Formation of nanofilament field emission devices  

DOE Patents (OSTI)

A process for fabricating a nanofilament field emission device. The process enables the formation of high aspect ratio, electroplated nanofilament structure devices for field emission displays wherein a via is formed in a dielectric layer and is self-aligned to a via in the gate metal structure on top of the dielectric layer. The desired diameter of the via in the dielectric layer is on the order of 50-200 nm, with an aspect ratio of 5-10. In one embodiment, after forming the via in the dielectric layer, the gate metal is passivated, after which a plating enhancement layer is deposited in the bottom of the via, where necessary. The nanofilament is then electroplated in the via, followed by removal of the gate passification layer, etch back of the dielectric, and sharpening of the nanofilament. A hard mask layer may be deposited on top of the gate metal and removed following electroplating of the nanofilament.

Morse, Jeffrey D. (Martinez, CA); Contolini, Robert J. (Lake Oswego, OR); Musket, Ronald G. (Danville, CA); Bernhardt, Anthony F. (Berkeley, CA)

2000-01-01T23:59:59.000Z

483

Electrochemical sharpening of field emission tips  

DOE Patents (OSTI)

A method for sharpening field emitter tips by electroetching/polishing. In gated field emitters, it is very important to initiate electron emission at the lowest possible voltage and thus the composition of the emitter and the gate, as well as the emitter-gate structure, are important factors. This method of sharpening the emitter tips uses the grid as a counter electrode in electroetching of the emitters, which can produce extremely sharp emitter tips as well as remove asperities and other imperfections in the emitters, each in relation to the specific grid hole in which it resides. This has the effect of making emission more uniform among the emitters as well as lowering the turn-on voltage.

Bernhardt, Anthony F. (Berkeley, CA)

1999-01-01T23:59:59.000Z

484

Quantum field theory over F1  

E-Print Network (OSTI)

In this paper we discuss some questions about geometry over the field with one element, motivated by the properties of algebraic varieties that arise in perturbative quantum field theory. We follow the approach to F1-geometry based on torified schemes. We first discuss some simple necessary conditions in terms of Euler characteristic and classes in the Grothendieck ring, then we give a blowup formula for torified varieties and we show that the wonderful compactifications of the graph configuration spaces, that arise in the computation of Feynman integrals in position space, admit an F1-structure. By a similar argument we show that the moduli spaces of curves of genus zero with n marked points admit an F1-structure. We also discuss conditions on hyperplane arrangements, a possible notion of embedded F1-structure and its relation to Chern classes, and questions on Chern classes of varieties with regular torifications.

Dori Bejleri; Matilde Marcolli

2012-09-21T23:59:59.000Z

485

Causality Is Inconsistent With Quantum Field Theory  

SciTech Connect

Causality in quantum field theory means the vanishing of commutators for spacelike separated fields (VCSSF). I will show that VCSSF is not tenable. For VCSSF to be tenable, and therefore, to have both retarded and advanced propagators vanish in the elsewhere, a superposition of negative energy antiparticle and positive energy particle propagators, traveling forward in time, and a superposition of negative energy particle and positive energy antiparticle propagators, traveling backward in time, are required. Hence VCSSF predicts non-vanishing probabilities for both negative energy particles in the forward-through-time direction and positive energy antiparticles in the backwards-through-time direction. Therefore, since VCSSF is unrealizable in a stable universe, tachyonic propagation must occur in denial of causality.

Wolf, Fred Alan [Global Quantum Physics Educational Company, San Francisco CA (United States)

2011-11-29T23:59:59.000Z

486

Solar magnetic fields and terrestrial climate  

E-Print Network (OSTI)

Solar irradiance is considered one of the main natural factors affecting terrestrial climate, and its variations are included in most numerical models estimating the effects of natural versus anthropogenic factors for climate change. Solar wind causing geomagnetic disturbances is another solar activity agent whose role in climate change is not yet fully estimated but is a subject of intense research. For the purposes of climate modeling, it is essential to evaluate both the past and the future variations of solar irradiance and geomagnetic activity which are ultimately due to the variations of solar magnetic fields. Direct measurements of solar magnetic fields are available for a limited period, but can be reconstructed from geomagnetic activity records. Here we present a reconstruction of total solar irradiance based on geomagnetic data, and a forecast of the future irradiance and geomagnetic activity relevant for the expected climate change.

Georgieva, Katya; Kirov, Boian

2014-01-01T23:59:59.000Z

487

Graphene as a Lattice Field Theory  

E-Print Network (OSTI)

We introduce effective field theories for the electronic properties of graphene in terms of relativistic fermions propagating in 2+1 dimensions, and outline how strong inter-electron interactions may be modelled by numerical simulation of a lattice field theory. For strong enough coupling an insulating state can form via condensation of particle-hole pairs, and it is demonstrated that this is a theoretical possibility for monolayer graphene. For bilayer graphene the effect of an interlayer bias voltage can be modelled by the introduction of a chemical potential (akin to isopsin chemical potential in QCD) with no accompanying sign problem; simulations reveal the presence of strong interactions among the residual degrees of freedom at the resulting Fermi surface, which is disrupted by an excitonic condensate. We also present preliminary results for the quasiparticle dispersion, which permit direct estimates of both the Fermi momentum and the induced gap.

Simon Hands; Wes Armour; Costas Strouthos

2015-01-08T23:59:59.000Z

488

Graphene as a Lattice Field Theory  

E-Print Network (OSTI)

We introduce effective field theories for the electronic properties of graphene in terms of relativistic fermions propagating in 2+1 dimensions, and outline how strong inter-electron interactions may be modelled by numerical simulation of a lattice field theory. For strong enough coupling an insulating state can form via condensation of particle-hole pairs, and it is demonstrated that this is a theoretical possibility for monolayer graphene. For bilayer graphene the effect of an interlayer bias voltage can be modelled by the introduction of a chemical potential (akin to isopsin chemical potential in QCD) with no accompanying sign problem; simulations reveal the presence of strong interactions among the residual degrees of freedom at the resulting Fermi surface, which is disrupted by an excitonic condensate. We also present preliminary results for the quasiparticle dispersion, which permit direct estimates of both the Fermi momentum and the induced gap.

Hands, Simon; Strouthos, Costas

2015-01-01T23:59:59.000Z

489

Graphene transparency in weak magnetic fields  

E-Print Network (OSTI)

We carry out an explicit calculation of the vacuum polarization tensor for an effective low-energy model of monolayer graphene in the presence of a weak magnetic field of intensity $B$ perpendicularly aligned to the membrane. By expanding the quasiparticle propagator in the Schwinger proper time representation up to order $(eB)^2$, where $e$ is the unit charge, we find an explicitly transverse tensor, consistent with gauge invariance. Furthermore, assuming that graphene is radiated with monochromatic light of frequency $\\omega$ along the external field direction, from the modified Maxwell's equations we derive the intensity of transmitted light and the angle of polarization rotation in terms of the longitudinal ($\\sigma_{xx}$) and transverse ($\\sigma_{xy}$) conductivities. Corrections to these quantities, both calculated and measured, are of order $(eB)^2/\\omega^4$. Our findings generalize and complement previously known results reported in literature regarding the light absorption problem in graphene from th...

Valenzuela, David; Loewe, Marcelo; Raya, Alfredo

2014-01-01T23:59:59.000Z

490

PROBABILISTIC CATALOGS FOR CROWDED STELLAR FIELDS  

SciTech Connect

We present and implement a probabilistic (Bayesian) method for producing catalogs from images of stellar fields. The method is capable of inferring the number of sources N in the image and can also handle the challenges introduced by noise, overlapping sources, and an unknown point-spread function. The luminosity function of the stars can also be inferred, even when the precise luminosity of each star is uncertain, via the use of a hierarchical Bayesian model. The computational feasibility of the method is demonstrated on two simulated images with different numbers of stars. We find that our method successfully recovers the input parameter values along with principled uncertainties even when the field is crowded. We also compare our results with those obtained from the SExtractor software. While the two approaches largely agree about the fluxes of the bright stars, the Bayesian approach provides more accurate inferences about the faint stars and the number of stars, particularly in the crowded case.

Brewer, Brendon J. [Department of Statistics, University of Auckland, Private Bag 92019, Auckland 1142 (New Zealand); Foreman-Mackey, Daniel; Hogg, David W., E-mail: bj.brewer@auckland.ac.nz [Center for Cosmology and Particle Physics, Department of Physics, New York University, Washington Place, New York, NY 10003 (United States)

2013-07-01T23:59:59.000Z

491

Electric Field and Humidity Trigger Contact Electrification  

E-Print Network (OSTI)

Here, we study the old problem of why identical insulators can charge one another on contact. We perform several experiments showing that, if driven by a preexisting electric field, charge is transferred between contacting insulators. This happens because the insulator surfaces adsorb small amounts of water from a humid atmosphere. We believe the electric field then separates positively from negatively charged ions prevailing within the water, which we believe to be hydronium and hydroxide ions, such that at the point of contact, positive ions of one insulator neutralize negative ions of the other one, charging both of them. This mechanism can explain for the first time the observation made four decades ago that wind-blown sand discharges in sparks if and only if a thunderstorm is nearby.

Zhang, Yanzhen; Liu, Yonghong; Wang, Xiaolong; Zhang, Rui; Shen, Yang; Ji, Renjie; Cai, Baoping

2015-01-01T23:59:59.000Z

492

Electric Field and Humidity Trigger Contact Electrification  

E-Print Network (OSTI)

Here, we study the old problem of why identical insulators can charge one another on contact. We perform several experiments showing that, if driven by a preexisting electric field, charge is transferred between contacting insulators. This happens because the insulator surfaces adsorb small amounts of water from a humid atmosphere. We believe the electric field then separates positively from negatively charged ions prevailing within the water, which we believe to be hydronium and hydroxide ions, such that at the point of contact, positive ions of one insulator neutralize negative ions of the other one, charging both of them. This mechanism can explain for the first time the observation made four decades ago that wind-blown sand discharges in sparks if and only if a thunderstorm is nearby.

Yanzhen Zhang; Thomas Phtz; Yonghong Liu; Xiaolong Wang; Rui Zhang; Yang Shen; Renjie Ji; Baoping Cai

2015-01-14T23:59:59.000Z

493

Mean field and collisions in hot nuclei  

SciTech Connect

Collisions between heavy nuclei produce nuclear matter of high density and excitation. Brueckner methods are used to calculate the momentum and temperature dependent mean field for nucleons propagating through nuclear matter during these collisions. The mean field is complex and the imaginary part is related to the ''two-body'' collision, while the real part relates to ''one-body'' collisions. A potential model for the N-N interactions is avoided by calculating the Reaction matrix directly from the T-matrix (i.e., N-N phase shifts) using a version of Brueckner theory previously published by the author. Results are presented for nuclear matter at normal and twice normal density and for temperatures up to 50 MeV. 23 refs., 7 figs.

K /umlt o/hler, H.S.

1989-06-01T23:59:59.000Z

494

Wireless Roadside Inspection Field Operations.pub  

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

Field Operational Test (FOT) Field Operational Test (FOT) Oak Ridge National Laboratory managed by UT-Battelle, LLC for the U.S. Department of Energy under Contract number DE-AC05-00OR22725 Research Areas Freight Flows Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies Research Brief T he U.S. Department of Transportation (DOT) Federal Motor Carrier Safety Administration (FMCSA) has commissioned the Wireless Roadside Inspection (WRI) Program to validate technologies and methodologies that can improve safety through inspections using wireless technologies that convey real-time identification of commercial vehicles, drivers, and carriers, as well as information about the status of the vehicles and their drivers. It is hypothesized that

495

Imaging spectrometer wide field catadioptric design  

DOE Patents (OSTI)

A wide field catadioptric imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The catadioptric design has zero Petzval field curvature. The imaging spectrometer comprises an entrance slit for transmitting light, a system with a catadioptric lens and a dioptric lens for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the system for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the system for receiving the light and the system for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light through the system for receiving the light to the detector array.

Chrisp; Michael P. (Danville, CA)

2008-08-19T23:59:59.000Z

496

Bekenstein bound in asymptotically free field theory  

SciTech Connect

For spatially bounded free fields, the Bekenstein bound states that the specific entropy satisfies the inequality (S/E){<=}2{pi}R, where R stands for the radius of the smallest sphere that circumscribes the system. The validity of the Bekenstein bound in the asymptotically free side of the Euclidean ({lambda}{phi}{sup 4}){sub d} scalar field theory is investigated. We consider the system in thermal equilibrium with a reservoir at temperature {beta}{sup -1} and defined in a compact spatial region without boundaries. Using the effective potential, we discuss the thermodynamic of the model. For low and high temperatures the system presents a condensate. We present the renormalized mean energy E and entropy S for the system and show in which situations the specific entropy satisfies the quantum bound.

Arias, E.; Svaiter, N. F.; Menezes, G. [Centro Brasileiro de Pesquisas Fisicas-CBPF, Rua Dr. Xavier Sigaud 150, Rio de Janeiro, RJ, 22290-180 (Brazil); Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz 271, Bloco II, Barra Funda, Sao Paulo, SP, 01140-070 (Brazil)

2010-08-15T23:59:59.000Z

497

Gauge Fields, Sources, and Electromagnetic Masses  

Science Journals Connector (OSTI)

The hypothesis of strong-interaction gauge fields, with non-Abelian gauge invariance broken only by the 1- particle mass terms, gives a natural source theory setting for the introduction of electromagnetic effects. The electromagnetic potential vector appears as a compensating field in the mass terms of the neutral 1- particles. The resulting electromagnetic self-action is used to discuss mass displacements. The pion electro-magnetic mass is computed in a number of waysby direct calculation of various processes and by chiral methods, in two variants. The relationship of these approaches is established. A phenomenological modification of the chiral evaluation gives perfect agreement with the observed value. It is found, however, that the (m?m?)2 terms, which are neglected in this method, are not very small. Baryon electromagnetic mass splittings are described by a simple adaptation of gross mass-spectrum empirics. Agreement with the data is excellent.

Julian Schwinger

1968-01-25T23:59:59.000Z

498

The Theory of Quantized Fields. VI  

Science Journals Connector (OSTI)

This paper treats the effect of a time-independent external electromagnetic field upon a Dirac field by constructing the transformation function in a representation adapted to the external field. In addition to the alteration of the Green's function, the structure of the transformation function differs from that of the zero field situation by a factor which describes the energy of the modified vacuum state. A formula for the vacuum energy is obtained and expressed in a form appropriate to a localized field, in terms of the energy eigenvalues of discrete modes, and of the phase shifts associated with continuum modes. Determinantal methods are then introduced, and the class of fields is established for which a certain frequency-dependent modified determinant is an integral function of the parameter measuring the strength of the field. The properties of the determinant are investigated in the two frequency regions |p0|m, with regard to the zeros of the real determinant in the former region, which are the frequencies of the discrete modes, and to the phase of the complex determinant in the latter region. In the second situation, a connection is established with a unitary matrix defined for modes of a given frequency, and the phase of the determinant is expressed in terms of the eigenphases of this matrix. Following a discussion of the asymptotic behavior of the determinant as a function of p0, the modified determinant is constructed in terms of the discrete mode energies and of the eigenphases. This yields a more precise version of the vacuum energy formula, in which a single divergent parameter is exhibited, for a suitable class of fields.The scattering description is introduced by an evaluation of the Green's function, for a sufficiently large time interval, in terms of the discrete modes, and of linear combinations of free particle modes expressed by a unitary matrix which is an extension of that referring to modes of a single frequency. Transition probabilities are derived and summarized in a generating function that serves to evaluate occupation number expectation values for the final state, upon which is based the definition of differential and total scattering cross sections. A discussion is presented of various symmetry operations and the resulting properties of cross sections. Then, a determinantal formula for the individual transition probabilities is used to examine the probability for the persistence of a state, in its dependence upon occupation numbers. An incidental result of this analysis is a qualitative upper limit to total cross sections in relation to the character of the angular distribution. A section is devoted to the properties of eigenphases, including the demonstration of equivalence between phase shifts and eigenphases, and the discussion of alternative procedures for their evaluation in terms of quantities exhibited as convergent power series in the potential. Finally, the determinantal asymptotic behavior is used to obtain a high-energy approximation to the eigenphases for an isotropic scalar potential. The resulting high energy, small angle, form of the scattering cross section is discussed in the extreme quantum and classical limits. An alternative derivation of the high-energy scattering formula is provided in terms of an approximate construction of the Green's function.

Julian Schwinger

1954-06-01T23:59:59.000Z

499

Squid detected NMR and MRI at ultralow fields  

DOE Patents (OSTI)

Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

Clarke, John (Berkeley, CA); Pines, Alexander (Berkeley, CA); McDermott, Robert F. (Monona, WI); Trabesinger, Andreas H. (London, GB)

2008-12-16T23:59:59.000Z

500

Squid detected NMR and MRI at ultralow fields  

DOE Patents (OSTI)

Nuclear magnetic resonance (NMR) signals are detected in microtesla fields. Prepolarization in millitesla fields is followed by detection with an untuned dc superconducting quantum interference device (SQUID) magnetometer. Because the sensitivity of the SQUID is frequency independent, both signal-to-noise ratio (SNR) and spectral resolution are enhanced by detecting the NMR signal in extremely low magnetic fields, where the NMR lines become very narrow even for grossly inhomogeneous measurement fields. MRI in ultralow magnetic field is based on the NMR at ultralow fields. Gradient magnetic fields are applied, and images are constructed from the detected NMR signals.

Clarke, John (Berkeley, CA); McDermott, Robert (Louisville, CO); Pines, Alexander (Berkeley, CA); Trabesinger, Andreas Heinz (CH-8006 Zurich, CH)

2007-05-15T23:59:59.000Z