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Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

dual-phase-ceramic-asu | netl.doe.gov  

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

Targets Systems Analysis Regulatory Drivers Program Plan Capture Handbook Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic Carbonate Membrane Reactor Project No.:...

2

Protection of Li Anodes Using Dual Phase Electrolytes  

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

cells with high energy anode and dual-phase electrolyte systems Partners BASF SE, Germany * Development of Li-S battery materials 3 Relevance. Project Objectives. * Develop a...

3

Analysis of Hexanitrostilbene (HNS) and Dipicryethane (DPE) for Mutagenicity by the Ames/Salmonella Assay  

SciTech Connect (OSTI)

The Ames/Salmonella assay, developed by Professor Bruce Ames at the University of California, Berkeley, is a rapid and sensitive assay for detecting mutagenicity of various chemical compounds (Maron and Ames, 1983). It is a widely accepted short-term assay for detecting chemicals that induce mutations in the histidine (his) gene of Salmonella typhimurium. This is a reverse mutation assay that detects the mutational reversion of his-dependent Salmonella to the his-independent counterpart. Thereby, mutagenic compounds will increase the frequency of occurrence of his-independent bacterial colonies. The assay utilizes the specific genetically constructed strains of bacteria either with or without mammalian metabolic activation enzymes (S9), Aroclor induced rat liver homogenate to assess the mutagenicity of different compounds. In this study, we will use the Ames/Salmonella assay to investigate the mutagenicity of Hexanitrostilbene (HNS) from both Bofors and Pantex, and Dipicryethane (DPE).

Wu, R; Felton, J

2007-10-12T23:59:59.000Z

4

Dual-phase ferritic martensitic steel for concrete reinforcement  

SciTech Connect (OSTI)

This paper will discuss the microstructural characteristics and the mechanical and corrosion properties of dual-phase ferritic martensitic (DFM) steel embedded in concrete. Previous research on DFM steel has shown that these steels can attain higher tensile strengths, higher energy absorption, more fatigue resistance, higher ductility, and superior corrosion resistance than conventional reinforcement. Currently, a research project investigating the mechanical and durability aspects of DFM bars embedded in small concrete samples is underway. The objective of this research is to determine mechanical characteristics and present preliminary findings on possible corrosion mechanisms of a 0.1C/2Si DFM steel embedded in concrete.

Trejo, D.; Monteiro, P.; Thomas, G. [Univ. of California, Berkeley, CA (United States)

1995-12-31T23:59:59.000Z

5

NETL: Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic  

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

Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic Carbonate Membrane Reactor Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic Carbonate Membrane Reactor Project No.: DE-FE0000470 Arizona State University is developing a dual-phase, membrane-based separation device which will separate carbon dioxide (CO2) from typical water gas shift (WGS) mixture feeds and produce hydrogen, which can be introduced into the combustion turbines of integrated gasification combined cycle (IGCC) plants. The objectives of the project are experimental studies of the synthesis of a high-temperature, chemically and thermally stable and CO2 perm-selective dual-phase membrane and its use as a membrane reactor for WGS reaction to produce H2 and CO2 rich streams. Concept of ceramic-carbonate dual phase membranes for CO2 separation. Concept of ceramic-carbonate dual phase membranes for CO2 separation.

6

Dual Phase Membrane for High Temperature CO2 Separation  

SciTech Connect (OSTI)

This project aimed at synthesis of a new inorganic dual-phase carbonate membrane for high temperature CO{sub 2} separation. Metal-carbonate dual-phase membranes were prepared by the direct infiltration method and the synthesis conditions were optimized. Permeation tests for CO{sub 2} and N{sub 2} from 450-750 C showed very low permeances of those two gases through the dual-phase membrane, which was expected due to the lack of ionization of those two particular gases. Permeance of the CO{sub 2} and O{sub 2} mixture was much higher, indicating that the gases do form an ionic species, CO{sub 3}{sup 2-}, enhancing transport through the membrane. However, at temperatures in excess of 650 C, the permeance of CO{sub 3}{sup 2-} decreased rapidly, while predictions showed that permeance should have continued to increase with temperature. XRD data obtained from used membrane indicated that lithium iron oxides formed on the support surface. This lithium iron oxide layer has a very low conductivity, which drastically reduces the flow of electrons to the CO{sub 2}/O{sub 2} gas mixture; thus limiting the formation of the ionic species required for transport through the membrane. These results indicated that the use of stainless steel supports in a high temperature oxidative environment can lead to decreased performance of the membranes. This revelation created the need for an oxidation resistant support, which could be gained by the use of a ceramic-type membrane. Work was extended to synthesize a new inorganic dual-phase carbonate membrane for high temperature CO{sub 2} separation. Helium permeance of the support before and after infiltration of molten carbonate are on the order of 10{sup -6} and 10{sup -10} moles/m{sup 2} {center_dot} Pa {center_dot} s respectively, indicating that the molten carbonate is able to sufficiently infiltrate the membrane. It was found that La{sub 0.6}Sr{sub 0.4}Co{sub 0.8}Fe{sub 0.2}O{sub 3-{delta}} (LSCF) was a suitable candidate for the support material. This support material proved to separate CO{sub 2} when combined with O{sub 2} at a flux of 0.194 ml/min {center_dot} cm{sup 2} at 850 C. It was also observed that, because LSCF is a mixed conductor (conductor of both electrons and oxygen ions), the support was able to provide its own oxygen to facilitate separation of CO{sub 2}. Without feeding O{sub 2}, the LSCF dual phase membrane produced a maximum CO{sub 2} flux of 0.246 ml/min {center_dot} cm{sup 2} at 900 C.

Jerry Lin

2007-06-30T23:59:59.000Z

7

Dual-phase membrane for High temperature CO2 separation  

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

Jerry Y.S. Lin Jerry Y.S. Lin Chemical Engineering Arizona State University Tempe, AZ 85287 Jerry.lin@asu.edu Pre-Combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic-Carbonate Membrane Reactor 2 Background 3 CO 2 Capture Methods and Efficiency Improvement Coal, Natural gas, Biomass CO 2 separation Power plant CO 2 compression, conditioning for sequestration Gasification Reforming Shift CO 2 Separation Power plant Power plant Air separation N 2 /O 2 CO 2 Post- combustion H 2 /CO H 2 /CO H 2 CO 2 H 2 O/N 2 /O 2 CO 2 H 2 Pre- combustion Air N 2 O 2 or O 2 /CO 2 CO 2 Oxyfuel Combustion Air separation Air Air separation Air Air separation Air Air Air Air Air separation Air Air separation Air N 2 Air separation Air O 2 or O 2 /CO 2 N 2 Air separation Air N 2 Air O 2 or O 2 /CO 2 N 2 Air Air separation N 2 Air 4 Water-Gas-Shift Reaction and Membrane Reactor Reforming

8

A study on the dual-phase treatment of weathering steel 09CuPCrNi  

Science Journals Connector (OSTI)

Dual-phase treatment processes, the resultant microstructures and the corresponding mechanical behavior and properties of weathering steel 09CuPCrNi have been studied. The results show that the microstructures of weathering steel 09CuPCrNi after intercritical quenching are characterized by an irregular distribution of island-shaped martensite in the matrix of equi-axed ferrite grains. Favorable mechanical properties and cold formability can be obtained through the intercritical quenching at 780 °C. The dual-phase-treated steel is superior in weldability to the as-received hot-rolled steel and its atmospheric corrosion resistance is better than that of the original.

Chunling Zhang; Dayong Cai; Bo Liao; Tianchen Zhao; Yunchang Fan

2004-01-01T23:59:59.000Z

9

Controlled rolling process for dual phase steels and application to rod, wire, sheet and other shapes  

DOE Patents [OSTI]

An improved, energy efficient, hot rolling method for direct production of cold formable dual-phase steel is provided. The steel is heated to completely austenitize it and then continuously hot rolled and cooled down into the ferrite-austenite two phase region to a temperature which is just below the effective Ar[sub 3] temperature. The hot rolled steel is then rapidly quenched to provide an alloy containing strong, tough lath martensite (fibers) in a ductile soft ferrite matrix. The method is particularly useful for providing rods in which form the alloy is capable of being drawn into high strength wire or the like in a cold drawing operation without any intermediate annealing or patenting, and has excellent strength, ductility and fatigue characteristics. 3 figs.

Thomas, G.; Ahn, J.H.; Kim, N.J.

1986-10-28T23:59:59.000Z

10

Dual phase multiplex polymerase chain reaction  

DOE Patents [OSTI]

Highly specific and sensitive methods were developed for multiplex amplification of nucleic acids on supports such as microarrays. Based on a specific primer design, methods include five types of amplification that proceed in a reaction chamber simultaneously. These relate to four types of multiplex amplification of a target DNA on a solid support, directed by forward and reverse complex primers immobilized to the support and a fifth type--pseudo-monoplex polymerase chain reaction (PCR) of multiple targets in solution, directed by a single pair of unbound universal primers. The addition of the universal primers in the reaction mixture increases the yield over the traditional "bridge" amplification on a solid support by approximately ten times. Methods that provide multitarget amplification and detection of as little as 0.45-4.5.times.10.sup.-12 g (equivalent to 10.sup.2-10.sup.3 genomes) of a bacterial genomic DNA are disclosed.

Pemov, Alexander (Charlottesville, VA); Bavykin, Sergei (Darien, IL)

2008-10-07T23:59:59.000Z

11

DNA Extraction  

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

DNA Extraction DNA Extraction Being able to extract deoxyribonucleic acid (DNA) is important for a number of reasons. By studying DNA, scientists can identify genetic disorders or diseases, and they can also possibly find cures for them by manipulating or experimenting with this DNA. At the Laboratory, researchers have studied DNA to detect biothreat agents in environmental and forensic samples. Scientists also are studying how human DNA may be destroyed by certain types of electromagnetic waves at certain frequencies. Classroom Activity: This activity is about the extraction of DNA from strawberries. Strawberries are a great fruit to use for this lesson because each student can work on his or her own. Strawberries are recommended because they yield more DNA than any other fruit. Strawberries are octoploid, which means that they have eight copies of each

12

Coal extraction  

SciTech Connect (OSTI)

Coal is extracted using a mixed solvent which includes a substantially aromatic component and a substantially naphthenic component, at a temperature of 400/sup 0/ to 500/sup 0/C. Although neither component is an especially good solvent for coal by itself, the use of mixed solvent gives greater flexibility to the process and offers efficiency gains.

Clarke, J.W.; Kimber, G.M.; Rantell, T.D.; Snape, C.E.

1985-06-04T23:59:59.000Z

13

Developing Next-generation Distributed Applications with QoS-enabled DPE Middleware  

E-Print Network [OSTI]

the underlying network and endsystem QoS architectures more effectively. This paper also describes a Qo operating system (OS) architectures that enforce QoS specifications pro- vided by applications. 3 include Java vir- tual machines (JVMs) and the ADAPTIVE Communication Envir

14

Dual-phase reactor plant with partitioned isolation condenser  

DOE Patents [OSTI]

A nuclear energy plant housing a boiling-water reactor utilizes an isolation condenser in which a single chamber is partitioned into a distributor plenum and a collector plenum. Steam accumulates in the distributor plenum and is conveyed to the collector plenum through an annular manifold that includes tubes extending through a condenser pool. The tubes provide for a transfer of heat from the steam, forming a condensate. The chamber has a disk-shaped base, a cylindrical sidewall, and a semispherical top. This geometry results in a compact design that exhibits significant performance and cost advantages over prior designs.

Hui, Marvin M. (Cupertino, CA)

1992-01-01T23:59:59.000Z

15

Protection of Li Anodes Using Dual Phase Electrolytes  

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

50 full charge-discharge cycles in the laboratory scale Li-S cells. Partners BASF SE, Germany * Development of Li-S battery materials 3 Project Objectives * Develop a unique...

16

Dual-phase evolution in complex adaptive systems  

Science Journals Connector (OSTI)

...to social networks to body plans and ecosystems, exhibit modular...in this way outperforms the standard algorithm on a number of hard...algorithms; a comprehensive review is provided by Cantu-Paz...research. Here we briefly review two widely used concepts-SOC...

2011-01-01T23:59:59.000Z

17

Protection of Li Anodes Using Dual Phase Electrolytes  

Broader source: Energy.gov [DOE]

2010 DOE Vehicle Technologies and Hydrogen Programs Annual Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C.

18

Protection of Li Anodes Using Dual Phase Electrolytes  

Broader source: Energy.gov [DOE]

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

19

Coal extraction process  

SciTech Connect (OSTI)

Sub-divided coal is extracted under non-thermally destructive conditions with a solvent liquid containing a compound having the general formula:

Hammack, R. W.; Sears, J. T.; Stiller, A. H.

1981-06-09T23:59:59.000Z

20

Fission Product Extraction Process  

ScienceCinema (OSTI)

A new INL technology can simultaneously extract cesium and strontium for reuse. For more information about INL research, visit http://www.facebook.com/idahonationallaboratory.

None

2013-05-28T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Fission Product Extraction Process  

SciTech Connect (OSTI)

A new INL technology can simultaneously extract cesium and strontium for reuse. For more information about INL research, visit http://www.facebook.com/idahonationallaboratory.

None

2011-01-01T23:59:59.000Z

22

Dekker PMIS Extraction Utility  

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

0907. The Extraction Utility is used for retrieving project 0907. The Extraction Utility is used for retrieving project management data from a variety of source systems for upload into Dekker PMIS(tm) (Dekker iPursuit®, Dekker iProgram(tm), or DOE PARSII). This release incorporates a number of new features and updates focused to improve existing functionality. The quality of each Dekker PMIS(tm) Extraction Utility release is a primary consideration at Dekker, Ltd. Since every customer environment is unique, Dekker strongly recommends that each implementation validate any software update prior to its release into the production environment. Dekker continually strives to enhance the features and capabilities of the Dekker PMIS(tm) Extraction Utility. We are very excited about this update and look forward to its implementation in your

23

Dekker PMIS Extraction Utility  

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

1217. The Extraction Utility is used for retrieving project 1217. The Extraction Utility is used for retrieving project management data from a variety of source systems for upload into the Dekker PMIS(tm) (Dekker iPursuit®, Dekker iProgram(tm), or DOE PARSII). This release incorporates a number of new features and updates primarily focused to improve the existing functionality. The quality of each Dekker PMIS(tm) Extraction Utility release is a primary consideration at Dekker, Ltd. Since every customer environment is unique, Dekker strongly recommends that each implementation site validate all software updates prior to release into the production environment. Dekker continually strives to enhance the features and capabilities of the Dekker PMIS(tm) Extraction Utility. We are very excited about this update and look forward to its implementation in your

24

Liquid chromatographic extraction medium  

DOE Patents [OSTI]

A method and apparatus are disclosed for extracting strontium and technetium values from biological, industrial and environmental sample solutions using a chromatographic column. An extractant medium for the column is prepared by generating a solution of a diluent containing a Crown ether and dispersing the solution on a resin substrate material. The sample solution is highly acidic and is introduced directed to the chromatographic column and strontium or technetium is eluted using deionized water. 1 fig.

Horwitz, E.P.; Dietz, M.L.

1994-09-13T23:59:59.000Z

25

Liquid chromatographic extraction medium  

DOE Patents [OSTI]

A method and apparatus for extracting strontium and technetium values from biological, industrial and environmental sample solutions using a chromatographic column is described. An extractant medium for the column is prepared by generating a solution of a diluent containing a Crown ether and dispersing the solution on a resin substrate material. The sample solution is highly acidic and is introduced directed to the chromatographic column and strontium or technetium is eluted using deionized water.

Horwitz, E. Philip (Naperville, IL); Dietz, Mark L. (Evanston, IL)

1994-01-01T23:59:59.000Z

26

Solvent extraction studies of holmium with acidic extractants  

SciTech Connect (OSTI)

Liquid-liquid extraction studies of holmium with 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester, naphthenic, and Versatic 10 acids have been carried out. The nature of the extracted species and the extraction equilibrium constants of these systems have been determined from aqueous nitrate solution. The extraction mechanism and complexation models have been proposed. 11 refs., 8 figs.

Gaikwad, A.G.; Damodaran, A.D. (CSIR, Trivandrum (India))

1993-03-01T23:59:59.000Z

27

Le Bail Intensity Extraction  

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

Le Bail Intensity Extraction Le Bail Intensity Extraction Presentation Goal Introduce the concepts behind LeBail fitting; why it is useful and how to perform a Le Bail fit with GSAS. Format: PDF slides or a RealPlayer video of the slides with accompanying audio and a demo video that shows how a Le Bail fit is performed. Presentation Outline What is the Le Bail method? Other approaches Why use the Le Bail method? Parameter fitting with Le Bail intensity extraction Le Bail refinement strategies Avoiding problems with background fitting: BKGEDIT Demo: an example Le Bail fit Links Le Bail lecture Slides (as PDF file) FlashMovie presentation with index (best viewed with 1024x768 or better screen resolution) FlashMovie file (800x600 pixels) Le Bail demo FlashMovie presentation with index (best viewed with 1024x768 or

28

Extracting the Eliashberg Function  

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

Extracting the Eliashberg Extracting the Eliashberg Function Extracting the Eliashberg Function Print Wednesday, 23 February 2005 00:00 A multitude of important chemical, physical, and biological phenomena are driven by violations of the Born-Oppenheimer approximation (BOA), which decouples electronic from nuclear motion in quantum calculations of solids. Recent advances in experimental techniques combined with ever-growing theoretical capabilities now hold the promise of presenting an unprecedented picture of these violations. By means of high-resolution angle-resolved photoemission at the ALS and theoretical calculations, a multi-institutional collaboration that includes researchers from Oak Ridge National Laboratory, the University of Tennessee, Stanford University, and the ALS has obtained the first high-resolution spectroscopic images of the specific vibrational modes that couple to a given electronic state.

29

Extracting Correlations Yuval Ishai #  

E-Print Network [OSTI]

, an equipment grant from Intel, and an Okawa Research award. Keywords­randomness extractors secure computationExtracting Correlations Yuval Ishai # Computer Science Dept. Technion and UCLA yuvali@cs.technion.ac.il Eyal Kushilevitz + Computer Science Dept. Technion and UCLA eyalk@cs.technion.ac.il Rafail Ostrovsky

Ostrovsky, Rafail

30

Extracting Correlations Yuval Ishai  

E-Print Network [OSTI]

, an equipment grant from Intel, and an Okawa Research award. Keywords-randomness extractors; secure computationExtracting Correlations Yuval Ishai Computer Science Dept. Technion and UCLA yuvali@cs.technion.ac.il Eyal Kushilevitz Computer Science Dept. Technion and UCLA eyalk@cs.technion.ac.il Rafail Ostrovsky CS

Sahai, Amit

31

Extraction Utility Design Specification  

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

Extraction Extraction Utility Design Specification May 13, 2013 Document Version 1.10 1 Revision History Date Version Section and Titles Author Summary of Change January 15, 2010 1.0 All Eric Morgan, Dekker, Ltd. Initial Draft Document January 19, 2010 1.1 All Igor Pedan, Dekker, Ltd. Document update with EM team review notes January 20, 2010 1.2 2.1.1 EM Project Team Document Review January 27, 2010 1.3 All Bruce Bartells Final Draft Review May 10, 2010 1.4.1 2.8 Igor Pedan, Dekker, Ltd. Section Update May 14, 2010 1.4.2 2.3.1 Igor Pedan, Dekker, Ltd. System Tables Added May 17, 2010 1.4.3 2.3 Igor Pedan, Dekker, Ltd. Enhancements Update June 29, 2010 1.5 All Igor Pedan, Dekker, Ltd. Revised for Version

32

Extracting the Eliashberg Function  

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

Extracting the Eliashberg Function Print Extracting the Eliashberg Function Print A multitude of important chemical, physical, and biological phenomena are driven by violations of the Born-Oppenheimer approximation (BOA), which decouples electronic from nuclear motion in quantum calculations of solids. Recent advances in experimental techniques combined with ever-growing theoretical capabilities now hold the promise of presenting an unprecedented picture of these violations. By means of high-resolution angle-resolved photoemission at the ALS and theoretical calculations, a multi-institutional collaboration that includes researchers from Oak Ridge National Laboratory, the University of Tennessee, Stanford University, and the ALS has obtained the first high-resolution spectroscopic images of the specific vibrational modes that couple to a given electronic state.

33

Information extraction from broadcast news  

Science Journals Connector (OSTI)

...Royal Society and the British Academy Information extraction from broadcast news Yoshihiko...presented: the first represents name class information as a word attribute; the second represents...American broadcast news. Named entity|Information extraction|Language modelling| Information...

2000-01-01T23:59:59.000Z

34

Extraction Utility Design Specification  

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

Extraction Utility Extraction Utility Design Specification January 11, 2011 Document Version 1.9 1 Revision History Date Version Section and Titles Author Summary of Change January 15, 2010 1.0 All Eric Morgan, Dekker, Ltd. Initial Draft Document January 19, 2010 1.1 All Igor Pedan, Dekker, Ltd. Document update with EM team review notes January 20, 2010 1.2 2.1.1 EM Project Team Document Review January 27, 2010 1.3 All Bruce Bartells Final Draft Review May 10, 2010 1.4.1 2.8 Igor Pedan, Dekker, Ltd. Section Update May 14, 2010 1.4.2 2.3.1 Igor Pedan, Dekker, Ltd. System Tables Added May 17, 2010 1.4.3 2.3 Igor Pedan, Dekker, Ltd. Enhancements Update June 29, 2010 1.5 All Igor Pedan, Dekker, Ltd. Revised for Version 8.0.20100628 July 14, 2010 1.5.1 2.8 Igor Pedan,

35

Extraction of fossil fuel with guanadine extracting agent  

SciTech Connect (OSTI)

Subdivided coal, oil shale or tar sands is extracted under non-thermally destructive conditions with a solvent liquid containing a compound having the general formula: (R1-)2 N-C(=N-R)-N(-R2)2 Where R, R/sub 1/, and R/sub 2/ are each hydrogen atoms, lower alkyl (C/sub 1/-C/sub 4/) groups, or phenyl groups; provided that the compound has a decomposition temperature higher than the temperature of the extraction, and the extraction temperature is below the softening or decomposition temperature of the material being extracted.

Case, G.D.; Bekowies, P.J.; Panson, A.G.; Stiller, A.H.

1984-09-04T23:59:59.000Z

36

Ocean Thermal Extractable Energy Visualization: Final Technical...  

Office of Environmental Management (EM)

Ocean Thermal Extractable Energy Visualization: Final Technical Report Ocean Thermal Extractable Energy Visualization: Final Technical Report Report about the Ocean Thermal...

37

Extractant composition including crown ether and calixarene extractants  

DOE Patents [OSTI]

An extractant composition comprising a mixed extractant solvent consisting of calix[4] arene-bis-(tert-octylbenzo)-crown-6 ("BOBCalixC6"), 4',4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 ("DtBu18C6"), and at least one modifier dissolved in a diluent. The DtBu18C6 may be present at from approximately 0.01M to approximately 0.4M, such as at from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol ("Cs-7SB") and may be present at from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The extractant composition further comprises an aqueous phase. The mixed extractant solvent may be used to remove cesium and strontium from the aqueous phase.

Meikrantz, David H. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Riddle, Catherine L. (Idaho Falls, ID); Law, Jack D. (Pocalello, ID); Peterman, Dean R. (Idaho Falls, ID); Mincher, Bruce J. (Idaho Falls, ID); McGrath, Christopher A. (Blackfoot, ID); Baker, John D. (Blackfoot, ID)

2009-04-28T23:59:59.000Z

38

Cesium and strontium extraction using a mixed extractant solvent including crown ether and calixarene extractants  

DOE Patents [OSTI]

A mixed extractant solvent including calix[4]arene-bis-(tert-octylbenzo)-crown-6 ("BOBCalixC6"), 4',4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 ("DtBu18C6"), and at least one modifier dissolved in a diluent. The mixed extractant solvent may be used to remove cesium and strontium from an acidic solution. The DtBu18C6 may be present from approximately 0.01 M to approximately 0.4M, such as from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol ("Cs-7SB") and may be present from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The mixed extractant solvent may form an organic phase in an extraction system that also includes an aqueous phase. Methods of extracting cesium and strontium as well as strontium alone are also disclosed.

Meikrantz, David H. (Idaho Falls, ID); Todd, Terry A. (Aberdeen, ID); Riddle, Catherine L. (Idaho Falls, ID); Law, Jack D. (Pocatello, ID); Peterman, Dean R. (Idaho Falls, ID); Mincher, Bruce J. (Idaho Falls, ID); McGrath, Christopher A. (Blackfoot, ID); Baker, John D. (Blackfoot, ID)

2007-11-06T23:59:59.000Z

39

Progress in the dual simplex method for large scale LP problems: practical dual phase 1 algorithms  

Science Journals Connector (OSTI)

The dual simplex algorithm has become a strong contender in solving large scale LP problems. One key problem of any dual simplex algorithm is to obtain a dual feasible basis as a starting point. We give an overview of methods which have been proposed ... Keywords: Dual simplex algorithm, Linear programming, Mathematical optimization system (MOPS)

Achim Koberstein; Uwe H. Suhl

2007-05-01T23:59:59.000Z

40

Development of dual phase magnesia-zirconia ceramics for light water reactor inert matrix fuel  

E-Print Network [OSTI]

fabricated from the oxide mixture using conventional pressing and sintering techniques. Characterization of the final product was performed using optical microscopy, scanning electron microscopy, x-ray diffraction analysis, and energy-dispersive x-ray...

Medvedev, Pavel

2005-02-17T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Physical Characteristics of the Dual Phase Region in Mixtures of Recycled Polystyrene/Curbside Tailings Materials  

E-Print Network [OSTI]

a counter rotating, non- intermeshing twin screw extruder. The result of this process is a clean, mainly profiles approximately eight feet long were extruded from the NJCT utilizing an ET/1 extrusion

42

Mechanical properties and microstructures of dual phase steels containing silicon, aluminum and molybdenum  

E-Print Network [OSTI]

STEELS CONTAINING SILICON, ALUMINUM AND MOLYBDENUM Thomasdeoxidizing action of aluminum results in grain refinementquench martensite, Both (a) and Aluminum particle within the

Neill, Thomas John O'

2011-01-01T23:59:59.000Z

43

Mechanical properties and microstructures of dual phase steels containing silicon, aluminum and molybdenum  

E-Print Network [OSTI]

K. (1977). G. E. Dieter, Mechanical Metallurgy, McGraw-Hill,LBL-9047 MECHANICAL PROPERTIES AND MICROSTRUCTURES OF DUALB. Heat Treatment C. Mechanical Testing D. Microscopy

Neill, Thomas John O'

2011-01-01T23:59:59.000Z

44

Extraction Route Trials on Sensitive Sites  

E-Print Network [OSTI]

on extraction routes. These routes must therefore be carefully constructed and maintained in order to safeguard

45

Accurate extraction of the News  

E-Print Network [OSTI]

We propose a new scheme for extracting gravitational radiation from a characteristic numerical simulation of a spacetime. This method is similar in conception to our earlier work but analytical and numerical implementation is different. The scheme is based on direct transformation to the Bondi coordinates and the gravitational waves are extracted by calculating the Bondi news function in Bondi coordinates. The entire calculation is done in a way which will make the implementation easy when we use uniform Bondi angular grid at $\\mathcal I^+$. Using uniform Bondi grid for news calculation has added advantage that we have to solve only ordinary differential equations instead of partial differential equation. For the test problems this new scheme allows us to extract gravitational radiation much more accurately than the previous schemes.

Shrirang S. Deshingkar

2006-09-14T23:59:59.000Z

46

2 Extracting and trapping biogenic 3 volatile organic compounds stored  

E-Print Network [OSTI]

, Subcritical water extraction; UAE, Ultrasound-assisted extraction 36 1. Introduction Plants release

Goldstein, Allen

47

Black Hole Energy Extraction Problems  

Science Journals Connector (OSTI)

... non-rotating black hole the particle can be lowered to no closer than 1.14 Schwarzschild radii, and the energy extracted can be no more than 63.2 per cent ... gram of matter-and the rope could be lowered no closer than 5 x 1011 Schwarzschild radii. This seems to rule out black holes as practical sources of energy. ...

1972-11-24T23:59:59.000Z

48

Titanium metal: extraction to application  

SciTech Connect (OSTI)

In 1998, approximately 57,000 tons of titanium metal was consumed in the form of mill products (1). Only about 5% of the 4 million tons of titanium minerals consumed each year is used to produce titanium metal, with the remainder primarily used to produce titanium dioxide pigment. Titanium metal production is primarily based on the direct chlorination of rutile to produce titanium tetrachloride, which is then reduced to metal using the Kroll magnesium reduction process. The use of titanium is tied to its high strength-to-weight ratio and corrosion resistance. Aerospace is the largest application for titanium. In this paper, we discuss all aspects of the titanium industry from ore deposits through extraction to present and future applications. The methods of both primary (mining of ore, extraction, and purification) and secondary (forming and machining) operations will be analyzed. The chemical and physical properties of titanium metal will be briefly examined. Present and future applications for titanium will be discussed. Finally, the economics of titanium metal production also are analyzed as well as the advantages and disadvantages of various alternative extraction methods.

Gambogi, Joseph (USGS, Reston, VA); Gerdemann, Stephen J.

2002-09-01T23:59:59.000Z

49

Extraction of hemicelluloses from fiberized spruce wood  

Science Journals Connector (OSTI)

Abstract A novel mechanical pre-treatment method was used to separate the wood chips into fiber bundles in order to extract high molecular weight wood polymers. The mechanical pre-treatment involved chip compression in a conical plug-screw followed by defibration in a fiberizer. The fiberized wood was treated with hot water at various combinations of time and temperature in order to analyze the extraction yield of hemicelluloses at different conditions. Nearly 6 mg/g wood of galactoglucomannan was obtained at 90 °C/120 min which was about three times more than what could be extracted from wood chips. The extracted carbohydrates had molecular weight ranging up to 60 kDa. About 10% of each of the extracted material had a molecular weight above 30 kDa. The extraction liquor could also be reused for consecutive extractions with successive increase in the extraction yield of hemicelluloses.

Shoaib Azhar; Gunnar Henriksson; Hans Theliander; Mikael E. Lindström

2015-01-01T23:59:59.000Z

50

Nuclear reprogramming in cell–free extracts  

Science Journals Connector (OSTI)

...Gardner, M. A. Surani and D. Solter Nuclear reprogramming in cell-free extracts...reprogramming of a somatic cell using a nuclear and cytoplasmic extract derived from another...an extract from T cells is evidenced by nuclear uptake and the assembly of transcription...

2003-01-01T23:59:59.000Z

51

Combined transuranic-strontium extraction process  

DOE Patents [OSTI]

The transuranic (TRU) elements neptunium, plutonium and americium can be separated together with strontium from nitric acid waste solutions in a single process. An extractant solution of a crown ether and an alkyl(phenyl)-N,N-dialkylcarbanylmethylphosphine oxide in an appropriate diluent will extract the TRU's together with strontium, uranium and technetium. The TRU's and the strontium can then be selectively stripped from the extractant for disposal.

Horwitz, E. Philip (Naperville, IL); Dietz, Mark L. (Evanston, IL)

1992-01-01T23:59:59.000Z

52

Determination of Extractives in Biomass: Laboratory Analytical...  

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

Extractives in Biomass Laboratory Analytical Procedure (LAP) Issue Date: 7172005 A. Sluiter, R. Ruiz, C. Scarlata, J. Sluiter, and D. Templeton Technical Report NRELTP-510-42619...

53

Ocean Thermal Extractable Energy Visualization: Final Technical...  

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

Approved for public release; distribution is unlimited OCEAN THERMAL EXTRACTABLE ENERGY VISUALIZATION Award DE-EE0002664 October 28, 2012 Final Technical Report Prepared by...

54

Aqueous Enzymatic Extraction Of Wheat Germ Oil.  

E-Print Network [OSTI]

??The objective of this study is to investigate the aqueous enzymatic extraction of wheat germ oil. Four enzymes (Viscozyme L, Multifect CX 13l, Multifect CX… (more)

Xie, Meizhen

2009-01-01T23:59:59.000Z

55

Multisolvent successive extractive refining of coal  

SciTech Connect (OSTI)

A selected group of commercial solvents, namely, anthracene oil (AO), ethylenediamine (EDA), and liquid paraffin (LP), were used for successive extraction of Assam coal. Hot AO provided a wide range of mixed solvents that dissociate chemically and interact favorably with dissociated and undissociated coal macromolecules (like dissolves like). This resulted in the enhancement of the EDA extractability of the AO-pretreated residual coal. EDA is a good swelling solvent and results in physical dissociation of coal molecules. The residual coal obtained after EDA extraction was subjected to extraction with LP, an H-donor, high-boiling (330--360 C) solvent. LP thermally dissociates coal macromolecules and interacts with the coal at its plastic stage at the free radical pockets. The mechanism and molecular dynamics of the multisolvent successive extraction of Assam coal using AO-EDA-LP solvents are discussed. In early attempts, successive extractions did not modify the extraction yield in the single solvent showing the maximum extraction. However, the AO-EDA-LP extraction resulted in the extraction of 70% coal, more than for any of the individual solvents used. Therefore, AO-EDA-LP extraction of coal affords a process yielding a superclean, high-heating value fuel from coal under milder conditions. Several uses of superclean coal have been recommended. Present studies have revealed a new concept concerning the structure of coal having 30% polyaromatic condensed entangled rings and 70% triaromatic-heterocyclic-naphthenic-aliphatic structure. The insolubility of coal is due to the polyfunctional-heterocyclic-condensed structure having a polyaromatic core with intermacromolecular entanglements.

Sharma, D.K.; Singh, S.K. [Indian Inst. of Tech., New Delhi (India)

1996-01-01T23:59:59.000Z

56

Review of information extraction technologies and applications  

Science Journals Connector (OSTI)

Information extraction (IE) is an important and growing field, in part because of the development of ubiquitous social media networking millions of people and producing huge collections of textual information. Mined information is being used in a wide ... Keywords: Adaptive computing, Big Data, Computational linguistics, Information extraction, Information retrieval, Machine learning, Neural computing, Web IE, Web information analysis

Sharon Gower Small, Larry Medsker

2014-09-01T23:59:59.000Z

57

Natural Gas Total Liquids Extracted  

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

Thousand Barrels) Thousand Barrels) Data Series: Natural Gas Processed Total Liquids Extracted NGPL Production, Gaseous Equivalent Period: Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Data Series Area 2007 2008 2009 2010 2011 2012 View History U.S. 658,291 673,677 720,612 749,095 792,481 873,563 1983-2012 Alabama 13,381 11,753 11,667 13,065 1983-2010 Alaska 22,419 20,779 19,542 17,798 18,314 18,339 1983-2012 Arkansas 126 103 125 160 212 336 1983-2012 California 11,388 11,179 11,042 10,400 9,831 9,923 1983-2012 Colorado 27,447 37,804 47,705 57,924 1983-2010 Florida 103 16 1983-2008 Illinois 38 33 24 231 705 0 1983-2012

58

Design of the ILC RTML Extraction Lines  

SciTech Connect (OSTI)

The ILC [1] Damping Ring to the Main Linac beamline (RTML) contains three extraction lines (EL). Each EL can be used both for an emergency abort dumping of the beam and tune-up continual train-by-train extraction. Two of the extraction lines are located downstream of the first and second stages of the RTML bunch compressor, and must accept both compressed and uncompressed beam with energy spreads of 2.5% and 0.15%, respectively. In this paper we report on an optics design that allowed minimizing the length of the extraction lines while offsetting the beam dumps from the main line by the distance required for acceptable radiation levels in the service tunnel. The proposed extraction lines can accommodate beams with different energy spreads while at the same time providing the beam size acceptable for the aluminum dump window. The RTML incorporates three extraction lines, which can be used for either an emergency beam abort or for a train-by-train extraction. The first EL is located downstream of the Damping Ring extraction arc. The other two extraction lines are located downstream of each stage of the two-stage bunch compressor. The first extraction line (EL1) receives 5GeV beam with an 0.15% energy spread. The extraction line located downstream of the first stage of bunch compressor (ELBC1) receives both compressed and uncompressed beam, and therefore must accept beam with both 5 and 4.88GeV energy, and 0.15% and 2.5% energy spread, respectively. The extraction line located after the second stage of the bunch compressor (ELBC2) receives 15GeV beam with either 0.15 or 1.8% energy spread. Each of the three extraction lines is equipped with the 220kW aluminum ball dump, which corresponds to the power of the continuously dumped beam with 5GeV energy, i.e., the beam trains must be delivered to the ELBC2 dump at reduced repetition rate.

Seletskiy, S.; Tenenbaum, P.; Walz, D.; /SLAC; Solyak, N.; /Fermilab

2011-10-17T23:59:59.000Z

59

Fluidized bed gasification of extracted coal  

DOE Patents [OSTI]

Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction zone (12) with an aqueous solution having a pH above 12.0 at a temperature between 65.degree. C. and 110.degree. C. for a period of time sufficient to remove bitumens from the coal into said aqueous solution and the extracted solids are then gasified at an elevated pressure and temperature in a fluidized bed gasification zone (60) wherein the density of the fluidized bed is maintained at a value above 160 kg/m.sup.3. In a preferred embodiment of the invention, water is removed from the aqueous solution in order to redeposit the extracted bitumens onto the solids prior to the gasification step.

Aquino, Dolores C. (Houston, TX); DaPrato, Philip L. (Westfield, NJ); Gouker, Toby R. (Baton Rouge, LA); Knoer, Peter (Houston, TX)

1986-01-01T23:59:59.000Z

60

Information Extraction from Voicemail Transcripts Martin Jansche  

E-Print Network [OSTI]

Information Extraction from Voicemail Transcripts Martin Jansche Department of Linguistics The Ohio State University Columbus, OH 43210, USA jansche.1@osu.edu Steven P. Abney AT&T Labs ­ Research 180 Park

Abney, Steven P.

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Extraction Steam Controls at EPLA-W  

E-Print Network [OSTI]

ExxonMobil's Baton Rouge site encompasses a world-scale refinery, chemical plant and third party power station. Historically, inflexible and unreliable control systems on two high-pressure, extracting/condensing steam turbines prevented the site...

Brinker, J. L.

2004-01-01T23:59:59.000Z

62

Mechanisms of Aqueous Extraction of Soybean Oil  

Science Journals Connector (OSTI)

Mechanisms of Aqueous Extraction of Soybean Oil ... showed also that the inertial turbulent regime is inappropriate for emulsification of oils with viscosity ?500 mPa s, if drops of micrometer size are to be obtained. ...

K. A. Campbell; C. E. Glatz

2009-10-29T23:59:59.000Z

63

Extracting buried twists with polarized neutron reflectometry  

Science Journals Connector (OSTI)

Polarized neutron reflectometry can extract the depth-dependent magnetization of ... the surface. Measuring the reflectivity first with neutrons glancing off the front surface and again with neutrons glancing off...

K.V. O’Donovan; J.A. Borchers; C.F. Majkrzak; O. Hellwig…

2002-12-01T23:59:59.000Z

64

Extracting secret keys from integrated circuits  

E-Print Network [OSTI]

Modern cryptographic protocols are based on the premise that only authorized participants can obtain secret keys and access to information systems. However, various kinds of tampering methods have been devised to extract ...

Lim, Daihyun, 1976-

2004-01-01T23:59:59.000Z

65

ECG Feature Extraction Techniques - A Survey Approach  

E-Print Network [OSTI]

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

Karpagachelvi, S; Sivakumar, M

2010-01-01T23:59:59.000Z

66

Optimization of a Solvent Extraction Desalination Plant  

E-Print Network [OSTI]

OPTIHIZATION OF A SOLEENT EXTRACTION DESALINATION PLANT A Thesis by PHILLIP LEN BEIGHLE Submitted to the Graduate College of Texas ABEAM University in partial fulfillment of the requirements for the degree of NASTER OF SCIENCE May lg6...$ Najor Subject: Chemical Erugincering OPTIMI7&TION OF A SOLVENT EXTRACTION DESALINATION PLANT A Thesis By PHILLIP LEN BEIGHLE Approved as to style and content by: (Chairman of Committee) (Head of Department) (Member) (Member) (Member) (Member...

Beighle, Phillip Lew

2012-06-07T23:59:59.000Z

67

Alkaline earth cation extraction from acid solution  

DOE Patents [OSTI]

An extractant medium for extracting alkaline earth cations from an aqueous acidic sample solution is described as are a method and apparatus for using the same. The separation medium is free of diluent, free-flowing and particulate, and comprises a Crown ether that is a 4,4'(5')[C.sub.4 -C.sub.8 -alkylcyclohexano]18-Crown-6 dispersed on an inert substrate material.

Dietz, Mark (Elmhurst, IL); Horwitz, E. Philip (Naperville, IL)

2003-01-01T23:59:59.000Z

68

Ocean Thermal Extractable Energy Visualization: Final Technical Report  

Broader source: Energy.gov [DOE]

Report about the Ocean Thermal Extractable Energy Visualization project, which focuses on assessing the Maximum Practicably Extractable Energy from the world’s ocean thermal resources.

69

Automated data extraction from in situ protein stable isotope...  

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

data extraction from in situ protein stable isotope probing studies. Automated data extraction from in situ protein stable isotope probing studies. Abstract: Protein stable isotope...

70

Louisiana Offshore Natural Gas Plant Liquids Production Extracted...  

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

Offshore Natural Gas Plant Liquids Production Extracted in Louisiana (Million Cubic Feet) Louisiana Offshore Natural Gas Plant Liquids Production Extracted in Louisiana (Million...

71

Alabama Offshore Natural Gas Plant Liquids Production Extracted...  

Gasoline and Diesel Fuel Update (EIA)

Plant Liquids Production Extracted in Alabama (Million Cubic Feet) Alabama Offshore Natural Gas Plant Liquids Production Extracted in Alabama (Million Cubic Feet) Decade Year-0...

72

California Onshore Natural Gas Plant Liquids Production Extracted...  

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

Plant Liquids Production Extracted in California (Million Cubic Feet) California Onshore Natural Gas Plant Liquids Production Extracted in California (Million Cubic Feet) Decade...

73

California Onshore Natural Gas Total Liquids Extracted in California...  

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

Total Liquids Extracted in California (Thousand Barrels) California Onshore Natural Gas Total Liquids Extracted in California (Thousand Barrels) Decade Year-0 Year-1 Year-2 Year-3...

74

Enhanced Geothermal in Nevada: Extracting Heat From the Earth...  

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

Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable Power Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable...

75

Investigation of magnetic nanoparticles for the rapid extraction...  

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

nanoparticles for the rapid extraction and assay of alpha-emitting radionuclides from urine: Investigation of magnetic nanoparticles for the rapid extraction and assay of...

76

Advanced Water Removal via Membrane Solvent Extraction | Department...  

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

Water Removal via Membrane Solvent Extraction Advanced Water Removal via Membrane Solvent Extraction advwaterremovalmse.pdf More Documents & Publications Advance Patent Waiver...

77

Extraction of Equilibrium Energy and Kinetic Parameters from...  

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

Investigator for the Extraction of Equilibrium Energy and Kinetic Parameters from Single Molecule Force Spectroscopy Data. LLNL BES Programs Highlight Extraction of...

78

Reexamination of Pure Qubit Work Extraction  

E-Print Network [OSTI]

Many work extraction or information erasure processes in the literature involve the raising and lowering of energy levels via external fields. But even if the actual system is treated quantum mechanically, the field is assumed to be classical and of infinite strength, hence not developing any correlations with the system or experiencing back-actions. We extend these considerations to a fully quantum mechanical treatment, by studying a spin-1/2 particle coupled to a finite-sized directional quantum reference frame, a spin-l system, which models an external field. With this concrete model together with a bosonic thermal bath, we analyse the back-action a finite-size field suffers during a quantum-mechanical work extraction process, the effect this has on the extractable work, and highlight a range of assumptions commonly made when considering such processes. The well-known semi-classical treatment of work extraction from a pure qubit predicts a maximum extractable work W = kT log 2 for a quasi-static process, which holds as a strict upper bound in the fully quantum mechanical case, and is only attained in the classical limit. We also address the problem of emergent local time-dependence in a joint system with globally fixed Hamiltonian.

Max F. Frenzel; David Jennings; Terry Rudolph

2014-11-19T23:59:59.000Z

79

Mineral and Fuel Extraction: Health Consequences  

Science Journals Connector (OSTI)

Activities associated with mining and fuel extraction may present a range of potential health risks for nearby communities. The environmental legacy of mining and fuel extraction is extensive, with millions of active and abandoned mines globally. Evaluation of community risks from mineral and fuel extraction is often a complex task, given the variety of products produced, multiple potential exposure contexts, routes of contact, and health impacts. Adverse health outcomes that may arise from mineral-related processes include release of toxicants such as metals, metalloids, and mineral dusts, and indirect effects such as the increased potential of vectorborne disease. The ongoing processing and end-use of minerals also produce gas emissions (such as carbon dioxide and sulfur dioxide), often on a large scale. Polycyclic aromatic hydrocarbons (PAHs) are substances of particular concern arising from conventional crude oil and coal extraction, oil sands/shales wastes, and tailings water, and are classified as either proven or suspected carcinogens. The geotechnical and structural aspects of mine sites must also be considered, including the risk of major hazardous events such as release of tailings dam contents. Indirect or delayed effects of mineral and fuel extraction include those that act to affect community health through contamination or disruption of water supplies and food sources (e.g., crops). As with many industries, the balance between risks and benefits of mining must be carefully calibrated.

A. Cook; R.B. Finkelman; A. Fourie

2011-01-01T23:59:59.000Z

80

Using direct hot-rolling approach to obtain dual-phase weathering steel Cu–P–Cr–Ni–Mo  

Science Journals Connector (OSTI)

A weathering steel Cu–P–Cr–Ni–Mo has been ... based on the continuous cooling transformation diagram of weathering steel Cu–P–Cr–Ni–Mo. The results show that the microstructures of DP weathering steels Cu–P–Cr–Ni...

Chunling Zhang; Dayong Cai; Bo Liao; Yunchang Fan

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Ethanol extraction of phytosterols from corn fiber  

DOE Patents [OSTI]

The present invention provides a process for extracting sterols from a high solids, thermochemically hydrolyzed corn fiber using ethanol as the extractant. The process includes obtaining a corn fiber slurry having a moisture content from about 20 weight percent to about 50 weight percent solids (high solids content), thermochemically processing the corn fiber slurry having high solids content of 20 to 50% to produce a hydrolyzed corn fiber slurry, dewatering the hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, washing the residual corn fiber, dewatering the washed, hydrolyzed corn fiber slurry to achieve a residual corn fiber having a moisture content from about 30 to 80 weight percent solids, and extracting the residual corn fiber with ethanol and separating at least one sterol.

Abbas, Charles (Champaign, IL); Beery, Kyle E. (Decatur, IL); Binder, Thomas P. (Decatur, IL); Rammelsberg, Anne M. (Decatur, IL)

2010-11-16T23:59:59.000Z

82

Hydrodynamic principles of wave power extraction  

Science Journals Connector (OSTI)

...Despite the abundance of wave power in the sea, technologies...extraction share with offshore wind power at least two similar challenges...present, the estimated power-generating capacity of...20-40 buoys to match a wind turbine of 2MW capacity...

2012-01-01T23:59:59.000Z

83

Inverse hydrochemical models of aqueous extracts tests  

SciTech Connect (OSTI)

Aqueous extract test is a laboratory technique commonly used to measure the amount of soluble salts of a soil sample after adding a known mass of distilled water. Measured aqueous extract data have to be re-interpreted in order to infer porewater chemical composition of the sample because porewater chemistry changes significantly due to dilution and chemical reactions which take place during extraction. Here we present an inverse hydrochemical model to estimate porewater chemical composition from measured water content, aqueous extract, and mineralogical data. The model accounts for acid-base, redox, aqueous complexation, mineral dissolution/precipitation, gas dissolution/ex-solution, cation exchange and surface complexation reactions, of which are assumed to take place at local equilibrium. It has been solved with INVERSE-CORE{sup 2D} and been tested with bentonite samples taken from FEBEX (Full-scale Engineered Barrier EXperiment) in situ test. The inverse model reproduces most of the measured aqueous data except bicarbonate and provides an effective, flexible and comprehensive method to estimate porewater chemical composition of clays. Main uncertainties are related to kinetic calcite dissolution and variations in CO2(g) pressure.

Zheng, L.; Samper, J.; Montenegro, L.

2008-10-10T23:59:59.000Z

84

Extracting scenic routes from VGI data sources  

Science Journals Connector (OSTI)

This paper presents a method to extract traversed scenic routes from Volunteered Geographic Information (VGI) data sources. We used the footprints of images posted on Panoramio and Flickr, as well as websites where users uploaded tracks of traversed ... Keywords: Flickr, VGI, panoramio, scenic routes, trip planning

Majid Alivand; Hartwig Hochmair

2013-11-01T23:59:59.000Z

85

Extractable soil phosphorus in Blackland Prairie soils  

E-Print Network [OSTI]

The Texas Agricultural Extension Service (TAEX) Soil Testing Laboratory currently utilizes a single phosphorus (P) extractant consisting of 1.43 M NH4OAc, 1. 0 M HCl, and 0.025 M EDTA-PH 4.2 to estimate plant available P for all soils in Texas...

Byrd, Robert Claude

2012-06-07T23:59:59.000Z

86

Hydrodynamic principles of wave power extraction  

Science Journals Connector (OSTI)

...Based on statistical data, Thorpe [12] has estimated the wave power potential along various...and K. Budal1982Wave-power absorption by parallel...de2008Phase control through load control of oscillating-body...and C. C. Mei2009Wave power extraction by a compact...

2012-01-01T23:59:59.000Z

87

Organic electroluminescent devices having improved light extraction  

DOE Patents [OSTI]

Organic electroluminescent devices having improved light extraction include a light-scattering medium disposed adjacent thereto. The light-scattering medium has a light scattering anisotropy parameter g in the range from greater than zero to about 0.99, and a scatterance parameter S less than about 0.22 or greater than about 3.

Shiang, Joseph John (Niskayuna, NY)

2007-07-17T23:59:59.000Z

88

Supercritical Fluid Extraction- Process Simulation and Design  

E-Print Network [OSTI]

SIMULATION P-1 SFE FEED PUMP SUPERCRITICAL FLUID EXTRACTOR (SFE) 2 T-1 10 7 .r D-2 SFE BOnoMS FLASH 9 222 The extract is decanted and fed to the fractionator to recover solvent carbon dioxide overhead and waterlIPA/carbon dioxide out...

Martin, C. L.; Seibert, A. F.

89

Extractive Institutions in Colonial Africa Federico Tadei  

E-Print Network [OSTI]

of colonies, such indigenous population density and ease of settlement for the coloniz- ers. Finally, I studyExtractive Institutions in Colonial Africa Thesis by Federico Tadei In Partial Fulfillment on prices to agricultural producers and labor institutions in French Africa, I show that (1

Winfree, Erik

90

20 - Extraction technologies and wine quality  

Science Journals Connector (OSTI)

Abstract: During the transformation of grapes into wine, the extraction of must from the grapes and the expression of the quality of the grapes in the wine have always been of great interest to winemakers. The quality and identity of wine are directly linked to fixed and volatile constituents contained particularly in the solid parts of the berries: skin, pulp and pips. This chapter aims to describe the processes used today to optimize extraction during vinification of white, rosé and red wines. The extraction techniques depend on chemical, biological and physical parameters, amongst which heat and matter transfers during maceration are the most important. However, higher or lower temperatures are used, not only to increase dissolution and diffusion of the compounds of interest, but also in order to break down the cell walls of the grape berries. Processes such as carbonic maceration or techniques based on the use of vats or specific materials are also described. Finally, different techniques for pressing, the last step in the extraction process, are presented.

A. Razungles

2010-01-01T23:59:59.000Z

91

Extraction and direct detection of metals in contaminated soils using supercritical fluid extraction - atomic emission spectrometry  

SciTech Connect (OSTI)

This presentation describes the determination of metal complexes that are directly extracted from sedimentary material using Supercritical Fluid Extraction (SFE) coupled with a microwave induced plasma (MIP) for direct elemental determination. The metal complexes studied are: tris (1,1,1 triofluoro 2,4-pentanediono) Iron (III), Cobalt (II) Acetylacetonate, Copper (II) Acetylacetonate, Zinc (II) Acetylacetonate, and Ni (II) Acetylacetonate. These complexes were spiked directly onto cleaned sea sand. Static extractions were performed using SO-CO{sub 2} modified with 5% methanol. The SFE was interfaced to the MIP by integrating the restrictor into the plasma torch assembly. A 100 W Ar plasma was sustained in a highly efficient TM{sub 010} cavity with the atomic emission signal being viewed in an axial manner. Results of these direct determinations herald the possibility of the extraction and determination of surface bound contaminants in one unified procedure, thereby reducing the risk of sample loss, sample contamination, and sample analysis time.

Lancaster, E.D.; Long, G.L.; Ducatte, G.R. [Virginia Tech, Blacksburg, VA (United States)

1995-12-31T23:59:59.000Z

92

Kinetic modeling of pressure-assisted solvent extraction of polyphenols from green tea in comparison with the conventional extraction  

Science Journals Connector (OSTI)

Abstract In the study, the kinetics of pressure-assisted solvent extraction (PSE) of polyphenols from green tea at different pressures (300, 400, 500 MPa) was studied. The model derived from Patricelli, which describes the two step extraction consisting of rapid washing followed by slow diffusion, had been applied to estimate the extraction kinetics. The model parameters were calculated using the experimental results obtained from PSE and conventional solvent extraction (CSE). The results showed a good prediction of Patricelli’s model for extraction kinetics in all experiments (R2 ? 0.996), which gave the possibility for estimation of the extraction rate and extent of PSE. The results also showed that the extraction by washing was more efficient with PSE than CSE. In addition, the initial extraction rate of the PSE was always much larger than that of the CSE. Therefore, PSE was more effective for extracting the green tea polyphenols than the CSE.

Jun Xi; Lang He; Lianggong Yan

2015-01-01T23:59:59.000Z

93

Geochemical Modeling of ILAW Lysimeter Water Extracts  

SciTech Connect (OSTI)

Geochemical modeling results of water extracts from simulated immobilized low-activity waste (ILAW) glasses, placed in lysimeters for eight years suggest that the secondary phase reaction network developed using product consistency test (PCT) results at 90°C may need to be modified for field conditions. For sediment samples that had been collected from near the glass samples, the impact of glass corrosion could be readily observed based upon the pH of their water extracts. For unimpacted sediments the pH ranged from 7.88 to 8.11 with an average of 8.04. Sediments that had observable impacts from glass corrosion exhibited elevated pH values (as high as 9.97). For lysimeter sediment samples that appear to have been impacted by glass corrosion to the greatest extent, saturation indices determined for analcime, calcite, and chalcedony in the 1:1 water extracts were near equilibrium and were consistent with the secondary phase reaction network developed using PCT results at 90°C. Fe(OH)3(s) also appears to be essentially at equilibrium in extracts impacted by glass corrosion, but with a solubility product (log Ksp) that is approximately 2.13 units lower than that used in the secondary phase reaction network developed using PCT results at 90°C. The solubilities of TiO2(am) and ZrO2(am) also appear to be much lower than that assumed in the secondary phase reaction network developed using PCT results at 90°C. The extent that the solubility of TiO2(am) and ZrO2(am) were reduced relative to that assumed in the secondary phase reaction network developed using PCT results at 90°C could not be quantified because the concentrations of Ti and Zr in the extracts were below the estimated quantification limit. Gibbsite was consistently highly oversaturated in the extract while dawsonite was at or near equilibrium. This suggests that dawsonite might be a more suitable phase for the secondary phase reaction network than gibbsite under field conditions. This may be due to the availability of carbonate that exists in the Hanford sediments as calcite. A significant source of carbonate was not available in the PCTs and this may account for why this phase did not appear in the PCTs. Sepiolite was consistently highly undersaturated, suggesting that another phase controls the solubility of magnesium. For samples that were most impacted by the effects of glass corrosion, magnesite appears to control glass corrosion. For samples that show less impacts from glass corrosion, clinochlore-7A or saponite-Mg appears to control the magnesium concentrations. For zinc, it appears that zincite is a better candidate than Zn(OH)2-? for controlling zinc concentrations in the extracts; however, in some samples all zinc phases considered were highly oversaturated. As a result the phase that controls zinc concentrations in the lysimeter extracts remains uncertain.

Cantrell, Kirk J.

2014-12-22T23:59:59.000Z

94

Extraction of Transversity and Collins Functions  

SciTech Connect (OSTI)

We present a global re-analysis of recent experimental data on azimuthal asymmetries in semi-inclusive deep inelastic scattering, from the HERMES and COMPASS Collaborations, and in e{sup +}e{sup -} --> h_1h_2X processes, from the Belle Collaboration. The transversity distribution and the Collins functions are extracted simultaneously, in a revised analysis which also takes into account a new parameterization of the unknown functions.

Anselmino, Mauro [INFN-Torino (Italy); Boglione, Mariaelena [INFN-Torino (Italy); D'Alesio, Umberto [INFN Cagliari (Italy); Melis, Stefano [INFN-Torino (Italy); Murgia, Francesco [INFN Cagliari (Italy); Prokudin, Alexei [JLAB, Newport News, VA (United States)

2014-01-01T23:59:59.000Z

95

Extracting TMDs from CLAS12 data  

SciTech Connect (OSTI)

We present studies of double longitudinal spin asymmetries in semi-inclusive deep inelastic scattering using a new dedicated Monte Carlo generator, which includes quark intrinsic transverse momentum within the generalized parton model based on the fully differential cross section for the process. Additionally we employ Bessel-weighting to the MC events to extract transverse momentum dependent parton distribution functions and also discuss possible uncertainties due to kinematic correlation effects.

Aghasyan, Mher M. [INFN-Frascati (Italy); Avakian, Harut A. [JLAB, Newport News, VA (United States)

2014-01-01T23:59:59.000Z

96

Extraction of nitrosoruthenium by tributyl phosphate  

SciTech Connect (OSTI)

Ruthenium is one of the elements that complicate regeneration of the spent nuclear fuel. A study has been made of distribution of highly extractable nitrosoruthenium complex RuNO(NO{sub 3}){sub 3} (RuT) between aqueous solutions and tributyl phosphate (TBP) in n-dodecane. Short phase contact ({approximately}30 s) was employed to minimize possible mutual conversion of nitrosoruthenium species, which takes place in the case of prolonged phase contact. The distribution coefficient {alpha}{sub RuT} is independent of hydrogen ion concentration and the presence of various salts in aqueous phase, i.e., RuT is extracted as nonelectrolyte. Experiments in which the TBP concentration was varied by dilution or binding TBP with nitric acid and uranyl nitrate indicates formation of trisolvate (as main complex characterized by extraction constant K{sub 3}=72) and disolvate (K{sub 2} = 5). At high nitric acid and/or uranyl nitrate concentration, {alpha}{sub RuT} is insignificantly reduced, while solvate number decrease substantially, Probably, nitrosoruthenium tetranitrate, e.g., RuNO(NO{sub 3}){sub 3}{center_dot}HNO{sub 3}{center_dot}TBP, and/or complex of RuT with uranyl nitrate is formed. The decontamination of valuable fuel components from ruthenium may be improved by a factor 10{sup 3} by binding TBP with nitric acid and uranyl nitrate. Another way to reduce {alpha}{sub RuT} is to convert RuT into poorly extractable RuD form. The time of RuT half-conversion into RuD was found to be 15 min in the presence of HNO{sub 3}, 9 min in the presence of uranyl nitrate, and 5 min at 50-60{degrees}C (simultaneously {alpha}{sub RuT} decreases by an order of magnitude).

Rozen, A.M.; Kartasheva, N.A.; Nikolotova, Z.N. [Bochvar Russian Inst. of Inorganic Materials, Moscow (Russian Federation)

1995-07-01T23:59:59.000Z

97

Nanomaterials for Extracting Hydrogen from Water  

E-Print Network [OSTI]

to catalyze water oxidation. K E Y A C C O M P L I S H M E N T S Produced highly active iron oxide (hematiteNanomaterials for Extracting Hydrogen from Water P R O J E C T L E A D E R : Veronika Szalai (NIST water. R E F E R E N C E Effect of tin doping on -Fe2 O3 photoanodes for water splitting, C. D. Bohn, A

98

Extracting Cultural Information from Ship Timber  

E-Print Network [OSTI]

Committee Members, Diana Burton Deborah Carlson Suzanne Eckert Samuel Mark Head of Department, Donny L. Hamilton December 2010 Major Subject: Anthropology iii ABSTRACT Extracting Cultural Information from Ship Timber. (December 2010... shipbuilding tool kit effectively reconstructed.11 Similarly, the management of ship timber stands can be reconstructed by looking at the arcs of futtocks, relative age of common timber pieces, percentage of wood wasted, and the identification of ?waney...

Creasman, Pearce

2012-02-14T23:59:59.000Z

99

Extraction of Freshwater and Energy from Atmosphere  

E-Print Network [OSTI]

Author offers and researches a new, cheap method for the extraction of freshwater from the Earth atmosphere. The suggected method is fundamentally dictinct from all existing methods that extract freshwater from air. All other industrial methods extract water from a saline water source (in most cases from seawater). This new method may be used at any point in the Earth except Polar Zones. It does not require long-distance freshwater transportation. If seawater is not utilized for increasing its productivity, this inexpensive new method is very environment-friendly. The author method has two working versions: (1) the first variant the warm (hot) atmospheric air is lifted by the inflatable tube in a high altitude and atmospheric steam is condenced into freswater: (2) in the second version, the warm air is pumped 20-30 meters under the sea-surface. In the first version, wind and solar heating of air are used for causing air flow. In version (2) wind and propeller are used for causing air movment. The first method...

Bolonkin, Alexander

2007-01-01T23:59:59.000Z

100

Sodium Hydroxide Extraction From Caustic Leaching Solutions  

SciTech Connect (OSTI)

This report describes experiments conducted to demonstrate the proof-of-principle of a method to recover NaOH from Hanford tank sludge leaching solutions. Aqueous solutions generated from leaching actual Hanford tank waste solids were used. The process involves neutralization of a lipophilic weak acid (t-octylphenol was used in these experiments) by reaction with NaOH in the aqueous phase. This results in the transfer of Na into the organic phase. Contacting with water reverses this process, reprotonating the lipophilic weak acid and transferring Na back into the aqueous phase as NaOH. The work described here confirms the potential application of solvent extraction to recover and recycle NaOH from solutions generated by leaching Hanford tank sludges. Solutions obtained by leaching sludges from tanks S-110 and T-110 were used in this work. It was demonstrated that Na+ is transferred from caustic leaching solution to the organic phase when contacted with t-octylphenol solutions. This was accompanied by a concomitant decrease in the aqueous-phase hydroxide ion concentration. Seventy to 80 % of the extracted Na was recovered by 3 to 4 sequential contacts of the organic phase with water. Cesium was co-extracted by the procedure, but Al and Cr remained in the feed stream.

Lumetta, Gregg J.; Garza, Priscilla A.; Levitskaia, Tatiana G.; Brown, Gilbert M.

2002-09-18T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Analysis of Contaminant Rebound in Ground Water in Extraction...  

Office of Environmental Management (EM)

Analysis of Contaminant Rebound in Ground Water in Extraction Wells at the Tuba City, Arizona, Site Analysis of Contaminant Rebound in Ground Water in Extraction Wells at the Tuba...

102

Computer-based Stroke Extraction in Historical Manuscripts  

E-Print Network [OSTI]

Computer-based Stroke Extraction in Historical Manuscripts Rainer; 1 Computer-based Stroke Extraction in Historical Manuscripts Rainer Herzog Recovering individual strokes in historical manuscripts can provide a valuable basis

Hamburg,.Universität

103

Tracking Terrorism News Threads by Extracting Event Signatures  

E-Print Network [OSTI]

Tracking Terrorism News Threads by Extracting Event Signatures Syed Toufeeq Ahmed, Ruchi Bhindwale and terrorism in news streams through their life over a time line. We do this by first extracting signature

Davulcu, Hasan

104

California Natural Gas Total Liquids Extracted (Thousand Barrels...  

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

Liquids Extracted (Thousand Barrels) California Natural Gas Total Liquids Extracted (Thousand Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9...

105

Web-Scale Extraction of Structured Data Michael J. Cafarella  

E-Print Network [OSTI]

Web-Scale Extraction of Structured Data Michael J. Cafarella University of Washington mjc the inception of the Web, the holy grail of web information extraction has been to create a knowledge base

Cafarella, Michael J.

106

Supercritical Fluid Extraction Applications in the Process Industries  

E-Print Network [OSTI]

solutions. Other examples of potential applications for SFE technology are the extraction of tar sands and oil shale [17J; separations of biomolecules such as triglycerides, alkaloids, and olefins [18J; extraction of coal liquids [19J; and the isolation...

Lahiere, R. J.; Fair, J. R.; Humphrey, J. L.

107

Extraction of tocopherols from deodorizer distillates: laboratory-scale evaluations  

E-Print Network [OSTI]

The tocopherols are valuable components of deodorizer distillate. Due to the limitations in the existing extraction methods, it is imperative that new processing parameters for extraction and concentration of tocopherols from deodorizer distillate...

Zhang, Xiaoyan

2012-06-07T23:59:59.000Z

108

Injection and Extraction Lines for the ILC Damping Rings  

E-Print Network [OSTI]

INJECTION AND EXTRACTION LINES FOR THE ILC DAMPING RINGS ?the injection and extraction lines into and out of the ILCas the design for the abort line. Due to changes of the geo-

Reichel, Ina

2008-01-01T23:59:59.000Z

109

New Extraction Technologies for Management of Radioactive Wastes  

Science Journals Connector (OSTI)

Different variants reprocessing of high-level radioactive wastes are considered. The extraction of cesium, strontium, rare earth elements and actinides by various extractants is analyzed. Advantages and disadv...

V. V. Babain; A. Yu. Shadrin

1999-01-01T23:59:59.000Z

110

Automation of Fluorous Solid-Phase Extraction for Parallel Synthesis  

Science Journals Connector (OSTI)

Automation of Fluorous Solid-Phase Extraction for Parallel Synthesis ... • Cartridge conditioning, sample loading, elution, and rinsing are automated. ...

Wei Zhang; Yimin Lu

2006-10-17T23:59:59.000Z

111

Process for the extraction of strontium from acidic solutions  

DOE Patents [OSTI]

The invention is a process for selectively extracting strontium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant solution is a macrocyclic polyether in an aliphatic hydrocarbon diluent containing a phase modifier. The process will selectively extract strontium values from nitric acid solutions which are up to 6 molar in nitric acid. 4 figs.

Horwitz, E.P.; Dietz, M.L.

1994-09-06T23:59:59.000Z

112

Multidocument Summarization via Information Extraction Michael White and Tanya Korelsky  

E-Print Network [OSTI]

the initial version of RIPTIDES, a system that combines information extraction (IE), extraction describe the initial implementation and evaluation of the RIPTIDES IE­ supported summarization system. We to be reported in the summary. RIPTIDES next applies its Information Extraction subsystem to generate a database

Cardie, Claire

113

Integrating rough set and genetic algorithm for negative rule extraction  

Science Journals Connector (OSTI)

Rule extraction is an important issue in data mining field. In this paper, we study the extraction problem for the complete negative rules of the form ¬R ? ¬D. By integrating rough set theory and genetic algorithm, we propose ... Keywords: genetic algorithm, negative rule, rough sets, rule extraction

Junyu Liu; Yubao Liu; Yan Long

2009-09-01T23:59:59.000Z

114

Process for the extraction of strontium from acidic solutions  

DOE Patents [OSTI]

The invention is a process for selectively extracting strontium values from aqueous nitric acid waste solutions containing these and other fission product values. The extractant solution is a macrocyclic polyether in an aliphatic hydrocarbon diluent containing a phase modifier. The process will selectively extract strontium values from nitric acid solutions which are up to 6 molar in nitric acid.

Horwitz, E.P.; Dietz, M.L.

1993-01-01T23:59:59.000Z

115

E-Print Network 3.0 - automated feature extraction Sample Search...  

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

vector can be extracted for shape recognition. The relationship between a sweet potato and its... shape feature vectors was explored for shape extraction. The extracted...

116

Direct extraction of oil from sunflower seeds by twin-screw extruder according to an aqueous extraction process: Feasibility  

E-Print Network [OSTI]

Direct extraction of oil from sunflower seeds by twin-screw extruder according to an aqueous the feasibility of an aqueous process to extract sunflower seed oil using a co-rotating twin-screw extruder. Aqueous extraction was carried out using whole seeds and the influence of the operating conditions on oil

Paris-Sud XI, Université de

117

Ethanol Extraction Technologies Inc EETI | Open Energy Information  

Open Energy Info (EERE)

Extraction Technologies Inc EETI Extraction Technologies Inc EETI Jump to: navigation, search Name Ethanol Extraction Technologies Inc (EETI) Place New York, New York Zip 10036-2601 Product New York-based bio-technology and ethanol production company with a patent for the exclusive use of the proprietary process of continuously removing and isolating ethanol during its fermentation process. References Ethanol Extraction Technologies Inc (EETI)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Ethanol Extraction Technologies Inc (EETI) is a company located in New York, New York . References ↑ "Ethanol Extraction Technologies Inc (EETI)" Retrieved from "http://en.openei.org/w/index.php?title=Ethanol_Extraction_Technologies_Inc_EETI&oldid=345167

118

Kerogen extraction from subterranean oil shale resources  

DOE Patents [OSTI]

The present invention is directed to methods for extracting a kerogen-based product from subsurface (oil) shale formations, wherein such methods rely on fracturing and/or rubblizing portions of said formations so as to enhance their fluid permeability, and wherein such methods further rely on chemically modifying the shale-bound kerogen so as to render it mobile. The present invention is also directed at systems for implementing at least some of the foregoing methods. Additionally, the present invention is also directed to methods of fracturing and/or rubblizing subsurface shale formations and to methods of chemically modifying kerogen in situ so as to render it mobile.

Looney, Mark Dean (Houston, TX); Lestz, Robert Steven (Missouri City, TX); Hollis, Kirk (Los Alamos, NM); Taylor, Craig (Los Alamos, NM); Kinkead, Scott (Los Alamos, NM); Wigand, Marcus (Los Alamos, NM)

2010-09-07T23:59:59.000Z

119

Quantum Phase Extraction in Isospectral Electronic Nanostructures  

SciTech Connect (OSTI)

Quantum phase is not a direct observable and is usually determined by interferometric methods. We present a method to map complete electron wave functions, including internal quantum phase information, from measured single-state probability densities. We harness the mathematical discovery of drum-like manifolds bearing different shapes but identical resonances, and construct quantum isospectral nanostructures possessing matching electronic structure but divergent physical structure. Quantum measurement (scanning tunneling microscopy) of these 'quantum drums' [degenerate two-dimensional electron states on the Cu(111) surface confined by individually positioned CO molecules] reveals that isospectrality provides an extra topological degree of freedom enabling robust quantum state transplantation and phase extraction.

Moon, Christopher

2010-04-28T23:59:59.000Z

120

GPC behavior of metalloporphyrins from rock extract  

SciTech Connect (OSTI)

Nickel and vanadyl porphyrins present in rock extract from the vicinity of petroleum deposit in the Persian Gulf area were isolated by the combination of adsurption chromatography on silica gel and GPC on styrene-divinylbenzene copolymer. In order to study the GPC behavior of these metalloporphyrins, chromatographic fractions were collected and analyzed by UV/VIS absorption spectroscopy and mass spectrometry. The number of carbon atoms present in the porphine substituents and the different geometry of nickel and vanadyl ions in the molecule of metalloporphyrins were found to be the main factors influencing the GPC separation of these complexes. This chromatographic technique provided an effective separation of nickel from vanadylporphyrins.

Sebor, G.

1986-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Method for extracting and sequestering carbon dioxide  

DOE Patents [OSTI]

A method and apparatus to extract and sequester carbon dioxide (CO.sub.2) from a stream or volume of gas wherein said method and apparatus hydrates CO.sub.2, and reacts the resulting carbonic acid with carbonate. Suitable carbonates include, but are not limited to, carbonates of alkali metals and alkaline earth metals, preferably carbonates of calcium and magnesium. Waste products are metal cations and bicarbonate in solution or dehydrated metal salts, which when disposed of in a large body of water provide an effective way of sequestering CO.sub.2 from a gaseous environment.

Rau, Gregory H. (Castro Valley, CA); Caldeira, Kenneth G. (Livermore, CA)

2005-05-10T23:59:59.000Z

122

Quantum computer architecture for fast entropy extraction  

E-Print Network [OSTI]

If a quantum computer is stabilized by fault-tolerant quantum error correction (QEC), then most of its resources (qubits and operations) are dedicated to the extraction of error information. Analysis of this process leads to a set of central requirements for candidate computing devices, in addition to the basic ones of stable qubits and controllable gates and measurements. The logical structure of the extraction process has a natural geometry and hierarchy of communication needs; a computer whose physical architecture is designed to reflect this will be able to tolerate the most noise. The relevant networks are dominated by quantum information transport, therefore to assess a computing device it is necessary to characterize its ability to transport quantum information, in addition to assessing the performance of conditional logic on nearest neighbours and the passive stability of the memory. The transport distances involved in QEC networks are estimated, and it is found that a device relying on swap operations for information transport must have those operations an order of magnitude more precise than the controlled gates of a device which can transport information at low cost.

Andrew M. Steane

2002-03-11T23:59:59.000Z

123

Quantitative Supercritical Fluid Extraction of Sulfonyl Urea Herbicides from Aqueous Matrices via Solid Phase Extraction Disks  

Science Journals Connector (OSTI)

......Figure 4). The SFE extracts were diluted to mobile phase composition with water, if necessary, and filtered through 0.45-m...carbon dioxide. Anal. Chem. In press. 18. D. Johnson, Agrochemicals division, E.I. Dupont d e Nemours, Wilmington, D E......

Angela L. Howard; Larry T. Taylor

1992-09-01T23:59:59.000Z

124

Supercritical Fluid Extraction of Plutonium and Americium from Soil  

SciTech Connect (OSTI)

Supercritical fluid extraction (SFE) of plutonium and americium from soil was successfully demonstrated using supercritical fluid carbon dioxide solvent augmented with organophosphorus and beta-diketone complexants. Spiked Idaho soils were chemically and radiologically characterized, then extracted with supercritical fluid carbon dioxide at 2,900 psi and 65 C containing varying concentrations of tributyl phosphate (TBP) and thenoyltrifluoroacetone (TTA). A single 45 minute SFE with 2.7 mol% TBP and 3.2 mol% TTA provided as much as 88% {+-} 6.0 extraction of americium and 69% {+-} 5.0 extraction of plutonium. Use of 5.3 mol% TBP with 6.8 mol% of the more acidic beta-diketone hexafluoroacetylacetone (HFA) provided 95% {+-} 3.0 extraction of americium and 83% {+-} 5.0 extraction of plutonium in a single 45 minute SFE at 3,750 psi and 95 C. Sequential chemical extraction techniques were used to chemically characterize soil partitioning of plutonium and americium in pre-SFE soil samples. Sequential chemical extraction techniques demonstrated that spiked plutonium resides primarily (76.6%) in the sesquioxide fraction with minor amounts being absorbed by the oxidizable fraction (10.6%) and residual fractions (12.8%). Post-SFE soils subjected to sequential chemical extraction characterization demonstrated that 97% of the oxidizable, 78% of the sesquioxide and 80% of the residual plutonium could be removed using SFE. These preliminary results show that SFE may be an effective solvent extraction technique for removal of actinide contaminants from soil.

Fox, R.V.; Mincher, B.J.

2002-05-23T23:59:59.000Z

125

Supercritical Fluid Extraction of Plutonium and Americium from Soil  

SciTech Connect (OSTI)

Supercritical fluid extraction (SFE) of plutonium and americium from soil was successfully demonstrated using supercritical fluid carbon dioxide solvent augmented with organophosphorus and beta-diketone complexants. Spiked Idaho soils were chemically and radiologically characterized, then extracted with supercritical fluid carbon dioxide at 2,900 psi and 65°C containing varying concentrations of tributyl phosphate (TBP) and thenoyltrifluoroacetone (TTA). A single 45 minute SFE with 2.7 mol% TBP and 3.2 mol% TTA provided as much as 88% ± 6.0 extraction of americium and 69% ± 5.0 extraction of plutonium. Use of 5.3 mol% TBP with 6.8 mol% of the more acidic beta-diketone hexafluoroacetylacetone (HFA) provided 95% ± 3.0 extraction of americium and 83% ± 5.0 extraction of plutonium in a single 45 minute SFE at 3,750 psi and 95°C. Sequential chemical extraction techniques were used to chemically characterize soil partitioning of plutonium and americium in pre-SFE soil samples. Sequential chemical extraction techniques demonstrated that spiked plutonium resides primarily (76.6%) in the sesquioxide fraction with minor amounts being absorbed by the oxidizable fraction (10.6%) and residual fractions (12.8%). Post-SFE soils subjected to sequential chemical extraction characterization demonstrated that 97% of the oxidizable, 78% of the sesquioxide and 80% of the residual plutonium could be removed using SFE. These preliminary results show that SFE may be an effective solvent extraction technique for removal of actinide contaminants from soil.

Fox, Robert Vincent; Mincher, Bruce Jay

2002-08-01T23:59:59.000Z

126

White LED with High Package Extraction Efficiency  

Office of Scientific and Technical Information (OSTI)

WHITE LED WITH HIGH PACKAGE WHITE LED WITH HIGH PACKAGE EXTRACTION EFFICIENCY Final Report Report Period Start Date: 10/01/2006 Report Period End Date: 09/30/2008 Authors: Yi Zheng and Matthew Stough Report Submission Date: November 2008 DOE Award Number: DE-FC26-06NT42935 Project Manager: Ryan Egidi OSRAM SYLVANIA Product Inc Central Research and Service Laboratory 71 Cherry Hill Dr., Beverly, MA 01915 2 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor an agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus,

127

Lactic acid fermentation of crude sorghum extract  

SciTech Connect (OSTI)

Crude extract from sweet sorghum supplemented with vetch juice was utilized as the carbohydrate source for fermentative production of lactic acid. Fermentation of media containing 7% (w/v) total sugar was completed in 60-80 hours by Lactobacillus plantarum, product yield averaging 85%. Maximum acid production rates were dependent on pH, initial substrate distribution, and concentration, the rates varying from 2 to 5 g/liter per hour. Under limited medium supplementation the lactic acid yield was lowered to 67%. The fermented ammoniated product contained over eight times as much equivalent crude protein (N x 6.25) as the original medium. Unstructured kinetic models were developed for cell growth, lactic acid formation, and substrate consumption in batch fermentation. With the provision of experimentally determined kinetic parameters, the proposed models accurately described the fermentation process. 15 references.

Samuel, W.A.; Lee, Y.Y.; Anthony, W.B.

1980-04-01T23:59:59.000Z

128

Optimized remedial groundwater extraction using linear programming  

SciTech Connect (OSTI)

Groundwater extraction systems are typically installed to remediate contaminant plumes or prevent further spread of contamination. These systems are expensive to install and maintain. A traditional approach to designing such a wellfield uses a series of trial-and-error simulations to test the effects of various well locations and pump rates. However, the optimal locations and pump rates of extraction wells are difficult to determine when objectives related to the site hydrogeology and potential pumping scheme are considered. This paper describes a case study of an application of linear programming theory to determine optimal well placement and pump rates. The objectives of the pumping scheme were to contain contaminant migration and reduce contaminant concentrations while minimizing the total amount of water pumped and treated. Past site activities at the area under study included disposal of contaminants in pits. Several groundwater plumes have been identified, and others may be present. The area of concern is bordered on three sides by a wetland, which receives a portion of its input budget as groundwater discharge from the pits. Optimization of the containment pumping scheme was intended to meet three goals: (1) prevent discharge of contaminated groundwater to the wetland, (2) minimize the total water pumped and treated (cost benefit), and (3) avoid dewatering of the wetland (cost and ecological benefits). Possible well locations were placed at known source areas. To constrain the problem, the optimization program was instructed to prevent any flow toward the wetland along a user-specified border. In this manner, the optimization routine selects well locations and pump rates so that a groundwater divide is produced along this boundary.

Quinn, J.J.

1995-12-31T23:59:59.000Z

129

Optimal Control of Vapor Extraction of Heavy Oil.  

E-Print Network [OSTI]

??Vapor extraction (Vapex) process is an emerging technology for viscous oil recovery that has gained much attention in the oil industry. However, the oil production… (more)

Muhamad, Hameed (Author)

2012-01-01T23:59:59.000Z

130

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology...  

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

and upgrading pathway to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks. Algal Lipid Extraction and Upgrading to Hydrocarbons...

131

Fluid Circulation and Heat Extraction from Engineered Geothermal...  

Open Energy Info (EERE)

from Engineered Geothermal Reservoirs Abstract A large amount of fluid circulation and heat extraction (i.e., thermal power production) research and testing has been conducted...

132

Dynamic View Dependent Isosurface Extraction Yarden Livnat, Charles Hansen  

E-Print Network [OSTI]

-004 Scientific Computing and Imaging Institute University of Utah Salt Lake City, UT 84112 USA Enter date here1 Dynamic View Dependent Isosurface Extraction Yarden Livnat, Charles Hansen UUSCI-2003 Extraction Yarden Livnat Charles Hansen Scientific Computing and Imaging Institute School of Computing

Livnat, Yarden

133

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway  

Broader source: Energy.gov [DOE]

This technology pathway case investigates the cultivation of algal biomass followed by further lipid extraction and upgrading to hydrocarbon biofuels. Technical barriers and key research needs have been assessed in order for the algal lipid extraction and upgrading pathway to be competitive with petroleum-derived gasoline-, diesel-, and jet-range hydrocarbon blendstocks.

134

Extracting Provably Correct Rules from Artificial Neural Networks  

E-Print Network [OSTI]

Extracting Provably Correct Rules from Artificial Neural Networks Sebastian B. Thrun University procedures have been applied successfully to a variety of real­world scenarios, artificial neural networks for extracting symbolic knowledge from Backpropagation­style artificial neural networks. It does

Clausen, Michael

135

Heuristically Driven Front Propagation for Fast Geodesic Extraction  

E-Print Network [OSTI]

Heuristically Driven Front Propagation for Fast Geodesic Extraction Gabriel Peyr´e Laurent D. Cohen to quickly extract geodesic paths on images and 3D meshes. We use a heuristic to drive the front propagation that is similar to the A algorithm used in artificial intelli- gence. In order to find very quickly geodesic paths

Paris-Sud XI, Université de

136

Web data extraction, applications and techniques: A survey  

Science Journals Connector (OSTI)

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

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

2014-01-01T23:59:59.000Z

137

FLUX-CIM: flexible unsupervised extraction of citation metadata  

Science Journals Connector (OSTI)

In this paper we propose a knowledge-base approach to help extracting the correct components of citations in any given format. Differently from related approaches that rely on manually built knowledge-bases (KBs) for recognizing the components of a citation, ... Keywords: citation management, metadata extraction

Eli Cortez; Altigran S. da Silva; Marcos André Gonçalves; Filipe Mesquita; Edleno S. de Moura

2007-06-01T23:59:59.000Z

138

Method for extracting copper, silver and related metals  

DOE Patents [OSTI]

A process for selectively extracting precious metals such as silver and gold concurrent with copper extraction from aqueous solutions containing the same. The process utilizes tetrathiamacrocycles and high molecular weight organic acids that exhibit a synergistic relationship when complexing with certain metal ions thereby removing them from ore leach solutions.

Moyer, B.A.; McDowell, W.J.

1987-10-23T23:59:59.000Z

139

Optimization Extraction Process of Aroma Components in Tobacco  

Science Journals Connector (OSTI)

......increased with an was increase in distillation time...the extraction yield increases with an increase in NaCl dosage and volume...components with a very low quality level were detected...Rapid extraction of wine aroma compounds using......

Huayuan Luo; Heng Cheng; WenJie Du; ShaoKun Wang; Chao Wang; Shourong Chang; Shifei Dong; Chunping Xu; Junsong Zhang

2013-03-01T23:59:59.000Z

140

Extracting hot carriers from photoexcited semiconductor nanocrystals  

SciTech Connect (OSTI)

This research program addresses a fundamental question related to the use of nanomaterials in solar energy -- namely, whether semiconductor nanocrystals (NCs) can help surpass the efficiency limits, the so-called “Shockley-Queisser” limit, in conventional solar cells. In these cells, absorption of photons with energies above the semiconductor bandgap generates “hot” charge carriers that quickly “cool” to the band edges before they can be utilized to do work; this sets the solar cell efficiency at a limit of ~31%. If instead, all of the energy of the hot carriers could be captured, solar-to-electric power conversion efficiencies could be increased, theoretically, to as high as 66%. A potential route to capture this energy is to utilize semiconductor nanocrystals. In these materials, the quasi-continuous conduction and valence bands of the bulk semiconductor become discretized due to confinement of the charge carriers. Consequently, the energy spacing between the electronic levels can be much larger than the highest phonon frequency of the lattice, creating a “phonon bottleneck” wherein hot-carrier relaxation is possible via slower multiphonon emission. For example, hot-electron lifetimes as long as ~1 ns have been observed in NCs grown by molecular beam epitaxy. In colloidal NCs, long lifetimes have been demonstrated through careful design of the nanocrystal interfaces. Due to their ability to slow electronic relaxation, semiconductor NCs can in principle enable extraction of hot carriers before they cool to the band edges, leading to more efficient solar cells.

Zhu, Xiaoyang

2014-12-10T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Concentration of marc extracts by membrane techniques  

Science Journals Connector (OSTI)

By-products obtained from red currant processing still contain large amounts of useful components, e.g. pectin. Pectin was extracted from red currant marc with water at a solid/liquid ratio of 1:10. To reduce the operating costs of further possessing, we concentrated the pectin solution by membrane separation, i.e. nanofiltration (NF) and reverse osmosis (RO). The objectives of our work were to study the effects of the operating pressure and cross-volume flow rate on the flux and on the membrane separation concentration ratio in order to establish the optimum operating conditions and to evaluate the contributions of the fouling, cake and membrane resistances to the overall resistance. Flat-sheet RO and a spiral-wound NF membrane were applied in the work. The conductivity, the color, the viscosity and the TSS of the permeate and the concentrate were followed during the measurements. Concentration by RO resulted in an increase of the TSS content to 4.28°Brix; for NF the corresponding level was 8.88°Brix. The membrane resistance and the fouling resistance were the determinant relative to the gel resistance.

C. Hodúr; Sz. Kertész; S. Beszédes; Zs. László; G. Szabó

2009-01-01T23:59:59.000Z

142

Unstructured data extraction of Chinese expert web page  

Science Journals Connector (OSTI)

Aiming at the problem of requiring a lot of human intervention in the process of unstructured data extraction from expert page based on traditional extraction methods, this paper proposes a method which detects data template automatically based on similarities and differences between HTML tags and strings, uses the lattice theory to find the location of the data grid region storing unstructured expert data, thus accesses to unstructured expert data. Firstly, with the help of the classifier on Chinese Expert Entity Homepages, a lot of expert pages are acquired by expert web crawler. Secondly, divide the expert pages into two types, list type and document type, then extract respectively the unstructured data from the two different types. Lastly, the extraction experiments are conducted on different types of web pages by improving open source code of Roadrunner. Experimental results show that, in the case of unsupervised, this method performs effectively on extraction of unstructured web data from Chinese expert pages.

Xudong Hong; Tao Shen; Longhua Shen; Zhengtao Yu; Jianyi Guo

2014-01-01T23:59:59.000Z

143

Geothermal-Heat Extraction As a source of renewable energy, geothermal-heat extraction has become increasingly  

E-Print Network [OSTI]

Geothermal-Heat Extraction As a source of renewable energy, geothermal-heat extraction has become increasingly important in recent years. Proper design of a geothermal system, be it for deep or for shallow well? 40 MWh/a are required for heating the building. Assume an energy efficiency of 70%. Create a 2D

Kornhuber, Ralf

144

Extraction of Proteins Glass Bead Method For preparation of protein extracts, the glass bead method is preferred. Some researchers  

E-Print Network [OSTI]

Extraction of Proteins ­ Glass Bead Method For preparation of protein extracts, the glass bead. glass beads (106 micron glass bead, Sigma cat. No. G4649) 7. Tabletop centrifuge 8. Vortex 9 µl glass beads (106 micron glass beads, Sigma, cat. G4649). 8. Vortex at top speed for 5 minutes. 9

145

Extraction behavior of trivalent lanthanides from nitric acid medium by selected structurally related diglycolamides as novel extractants  

Science Journals Connector (OSTI)

Abstract The extraction affinity of trivalent lanthanides, Ln(III), from nitric acid medium has been explored using a series of ten structurally related synthesized diglycolamides (DGA) diluted with toluene. The structure-reactivity relationship with extraction of trivalent lanthanides as well as their atomic number was investigated. The extraction of nitric acid and selected lanthanide ions by N,N,N?,N?-tetradodeceyldiglycolamide (TDDGA), from nitric acid medium was studied in details. Distribution ratio of the trivalent lanthanide ions has been studied as a function of aqueous HNO3 concentrations, DGA concentration, and temperature. The stoichiometry of La(III), Nd(III), and Eu(III) was determined at different nitric acid concentrations by slope analysis of extraction data, and enthalpy change accompanied by extraction was also determined and reported in this work.

E.A. Mowafy; D. Mohamed

2014-01-01T23:59:59.000Z

146

A new model for solvent extraction in columns  

SciTech Connect (OSTI)

A new model was developed for analyzing solvent extraction processes carried out in columns. Each column is treated as a series of well-defined equilibrium stages where the backmixing (other-phase carryover) between stages can be large. By including all mass transfer effects in the backmixing value, the same number of stages can be used for all extracted components no matter what their distribution coefficients. This greatly simplifies the calculations required when modeling multicomponent solvent extraction processes. Initial testing shows the new model to be better than either the Height of an Equivalent Theoretical Plate (HETP) or the Height of a Transfer Unit (HTU) method.

Leonard, R.A.; Regalbuto, M.C.; Chamberlain, D.B.; Vandegrift, G.F.

1989-12-08T23:59:59.000Z

147

Photocurrent extraction efficiency in colloidal quantum dot photovoltaics  

SciTech Connect (OSTI)

The efficiency of photocurrent extraction was studied directly inside operating Colloidal Quantum Dot (CQD) photovoltaic devices. A model was derived from first principles for a thin film p-n junction with a linearly spatially dependent electric field. Using this model, we were able to clarify the origins of recent improvement in CQD solar cell performance. From current-voltage diode characteristics under 1 sun conditions, we extracted transport lengths ranging from 39 nm to 86 nm for these materials. Characterization of the intensity dependence of photocurrent extraction revealed that the dominant loss mechanism limiting the transport length is trap-mediated recombination.

Kemp, K. W.; Wong, C. T. O.; Hoogland, S. H.; Sargent, E. H. [Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4 (Canada)] [Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4 (Canada)

2013-11-18T23:59:59.000Z

148

Extraction of U(VI) with N,N?-dimethyl-N,N?-dioctylmalonamide from nitrate media  

Science Journals Connector (OSTI)

The extraction of uranyl nitrate with the novel extractant N,N?-dimethyl-N,N?-dioctylmalonamide (DMDOMA) from aqueous sodium nitrate (and nitric acid) was investigated. The extraction mechanism was established an...

Yu Cui; Yufen Hu; Yanju Zhang; Shaohong Yin…

2010-03-01T23:59:59.000Z

149

Innovative Drying Technology Extracts More Energy from High Moisture Coal |  

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

Innovative Drying Technology Extracts More Energy from High Innovative Drying Technology Extracts More Energy from High Moisture Coal Innovative Drying Technology Extracts More Energy from High Moisture Coal March 11, 2010 - 12:00pm Addthis Washington, DC - An innovative coal-drying technology that will extract more energy from high moisture coal at less cost and simultaneously reduce potentially harmful emissions is ready for commercial use after successful testing at a Minnesota electric utility. The DryFining(TM) technology was developed with funding from the first round of the U.S. Department of Energy's Clean Coal Power Initiative (CCPI). Great River Energy of Maple Grove, Minn., has selected the WorleyParsons Group to exclusively distribute licenses for the technology, which essentially uses waste heat from a power plant to reduce moisture content

150

PHASE: Progressive Hardware Assisted IsoSurface Extraction Framework  

E-Print Network [OSTI]

, Charles Hansen UUSCI-2002-001 Scientific Computing and Imaging Institute University of Utah Salt Lake City, Charles Hansen Abstract-- Isosurface extraction is an important tech- nique for visualizing three

Livnat, Yarden

151

Automatic record extraction for the World Wide Web  

E-Print Network [OSTI]

As the amount of information on the World Wide Web grows, there is an increasing demand for software that can automatically process and extract information from web pages. Despite the fact that the underlying data on most ...

Shen, Yuan Kui

2006-01-01T23:59:59.000Z

152

Subcritical Water as a Green Solvent for Plant Extraction  

Science Journals Connector (OSTI)

Subcritical water extraction (SWE), as a method, is non-toxic, non-flammable, cheap, readily available, safe, environmental friendly and uses a green solvent. Chemicals with different functional groups such as .....

Mustafa Zafer Özel; Fahrettin Gö?ü?

2014-01-01T23:59:59.000Z

153

Liquefied Dimethyl Ether: An Energy-Saving, Green Extraction Solvent  

Science Journals Connector (OSTI)

Extraction is an essential procedure in the fields of food, pharmacy, and renewable bio-fuels, and it affords the recovery of desired components and the removal of undesired components from the natural feedstock....

Peng Li; Hisao Makino

2014-01-01T23:59:59.000Z

154

Process to upgrade coal liquids by extraction prior to hydrodenitrogenation  

DOE Patents [OSTI]

Oxygen compounds are removed, e.g., by extraction, from a coal liquid prior to its hydrogenation. As a result, compared to hydrogenation of such a non-treated coal liquid, the rate of nitrogen removal is increased.

Schneider, Abraham (Overbrook Hills, PA); Hollstein, Elmer J. (Wilmington, DE); Janoski, Edward J. (Havertown, PA); Scheibel, Edward G. (Media, PA)

1982-01-01T23:59:59.000Z

155

Detoxification of hydrolysate by reactive-extraction for generating biofuels  

Science Journals Connector (OSTI)

We introduce a reactive extraction to detoxify hydrolysate before fermentation to biofuels. In the selection of diluents, n-octanol showed the highest removal yield of 5-hydroxymethylfurfural (5-HMF) and levulini...

Gwi-Taek Jeong; Sung-Koo Kim; Don-Hee Park

2013-02-01T23:59:59.000Z

156

Contour extraction by mixture density description obtained from region clustering  

Science Journals Connector (OSTI)

This paper describes a contour extraction scheme which refines a roughly estimated initial contour to outline a precise object boundary. In our approach, mixture density descriptions, which are parametric desc...

Minoru Etoh; Yoshiaki Shirai; Minoru Asada

1992-01-01T23:59:59.000Z

157

Structural analysis of extracts from spent hydroprocessing catalysts  

SciTech Connect (OSTI)

Solvent extracts from spent commercial naphtha and gas oil hydrotreating catalysts were examined in order to elucidate the structure of adsorbed poisons. Amides were identified in the extracts and made up 20-30% of the basic compounds. The oxygen content of the extracts was as high as 28% by weight. Some of this oxygen may be associated with metal complexes or present as inorganic material. Infrared spectroscopic analysis revealed very strong absorptions due to carbonyls, suggesting that compounds such as ketones and carboxylic acids were present. The extracted compounds consisted of saturated (paraffinic and naphthenic) structures and aromatic groups, with >50% boiling at +343/sup 0/c. These results suggest polymerization of species on the surface of the catalyst, rather than condensation of aromatic structures to form coke.

Choi, J.H.K.; Gray, M.R.

1988-09-01T23:59:59.000Z

158

Simplified building models extraction from Ultra-light UAV Imagery  

E-Print Network [OSTI]

facades and the cameras' position in an editing software such as Pointools3 or Google Sketchup: Colorized dense cloud of points Figure 4: Refined extracted building models in Sketchup #12;

Fua, Pascal

159

Supercritical Fluid Extraction of Environmental Analytes Using Trifluoromethane  

Science Journals Connector (OSTI)

......addressed. Department of Chemistry, Virginia Polytechnic...Taylor Department of Chemistry, Virginia Polytechnic...0 supports vigorous combustion of flammable liquids...montan wax from a toluene coal tar extract (16...I. Barshad. In: Chemistry of the Soil, F.E......

A.L. Howard; W.J. Yoo; L.T. Taylor; F.K. Schweighardt; A.P. Emery; S.N. Chesler; W.A. MacCrehan

1993-10-01T23:59:59.000Z

160

Experimental studies of flapping foils for energy extraction  

E-Print Network [OSTI]

For centuries scientists have looked to nature for inspiration for novel and efficient solutions to engineering problems. Recently, research on fish and other marine mammals has shown their ability to efficiently extract ...

Simpson, Bradley James

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Classification and Feature Extraction in Man and Machine  

E-Print Network [OSTI]

Classification and Feature Extraction in Man and Machine Dissertation zur Erlangung des Grades stimuli and for their subsequent classification. A methodology combining human psychophysics and machine learning is introduced, where feature extractors are modeled using methods from unsupervised machine

162

Side extraction duoPIGatron-type ion source.  

SciTech Connect (OSTI)

We have designed and constructed a compact duoPIGatron-type ion source, for possible use in ion implanters, in such the ion can be extracted from side aperture in contrast to conventional duoPIGatron sources with axial ion extraction. The size of the side extraction aperture is 1x40 mm. The ion source was developed to study physical and technological aspects relevant to an industrial ion source. The side extraction duoPIGatron has stable arc, uniformly bright illumination, and dense plasma. The present work describes some of preliminary operating parameters of the ion source using Argon, BF3. The total unanalyzed beam currents are 23 mA using Ar at an arc current 5 A and 13 mA using BF3 gas at an arc current 6 A.

GUSHENETS,V.I.; OKS, E.M.; HERSCHOVITCH, A.; JOHNSON, B.M.

2007-08-26T23:59:59.000Z

163

California Offshore Natural Gas Plant Liquids Production Extracted...  

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

Offshore Natural Gas Plant Liquids Production Extracted in California (Million Cubic Feet) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6 Year-7 Year-8 Year-9 2010's NA -...

164

Repair of Damaged DNA by Arabidopsis Cell Extract  

Science Journals Connector (OSTI)

...and irradiated at the doses indicated in figure legends...the repair of a model ionizing radiation-induced DNA strand...their genomes from a wide range of genotoxic stresses...Arabidopsis cytology genetics radiation effects Cell Extracts...

Anatoliy Li; David Schuermann; Francesca Gallego; Igor Kovalchuk; Bruno Tinland

165

Optimizing synonym extraction using monolingual and bilingual resources  

Science Journals Connector (OSTI)

Automatically acquiring synonymous words (synonyms) from corpora is a challenging task. For this task, methods that use only one kind of resources are inadequate because of low precision or low recall. To improve the performance of synonym extraction, ...

Hua Wu; Ming Zhou

2003-07-01T23:59:59.000Z

166

Factors influencing the efficiency of arsenic extraction by phosphate  

E-Print Network [OSTI]

, phosphate concentration, principal counterion, reaction pH, and reaction time. The extraction efficiency was impacted by the influence of these individual factors on reaction kinetics and accessibility of arsenic adsorption sites for ligand exchange...

Yean, Su Jin

2005-11-01T23:59:59.000Z

167

Neutron sources for investigations on extracted beams in Russia  

SciTech Connect (OSTI)

An overview is presented of the current status and prospects for the development of neutron sources intended for investigations on extracted beams in Russia. The participation of Russia in international scientific organizations is demonstrated.

Aksenov, V. L. [Russian Research Centre 'Kurchatov Institute' (Russian Federation)], E-mail: Aksenov@kiae.ru

2007-05-15T23:59:59.000Z

168

Improve SMT quality with automatically extracted paraphrase rules  

Science Journals Connector (OSTI)

We propose a novel approach to improve SMT via paraphrase rules which are automatically extracted from the bilingual training data. Without using extra paraphrase resources, we acquire the rules by comparing the source side of the parallel corpus with ...

Wei He; Hua Wu; Haifeng Wang; Ting Liu

2012-07-01T23:59:59.000Z

169

Construction of prototype system for directional solvent extraction desalination  

E-Print Network [OSTI]

Directional solvent extraction has been demonstrated as a low temperature, membrane free desalination process. This method dissolves the water into an inexpensive, benign directional solvent, rejects the contaminants, then ...

Fowler, Michael James

2012-01-01T23:59:59.000Z

170

Electromagnetic extraction and annihilation of antiprotons for spacecraft propulsion  

E-Print Network [OSTI]

A novel concept for the extraction and long-term trapping of antiprotons from planetary magnetospheres is developed. The excitation via rotating magnetic field of an electron population within a distributed neutral plasma ...

Zayas, Daniel Antonio

2008-01-01T23:59:59.000Z

171

Equilibrium and hydrodynamic studies of water extraction from fermentation broth  

E-Print Network [OSTI]

Previous studies using tertiary amines to extract water from reagent-grade carboxylate salts (calcium acetate, propionate, and butyrate) have shown selectivity for water and not for the carboxylate salts. These results allow the design...

Adorno-Gomez, Wilberto

2012-06-07T23:59:59.000Z

172

Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids  

Broader source: Energy.gov [DOE]

DOE Geothermal Peer Review 2010 - Presentation. Project objectives: Demonstrate geothermal mineral extraction; Demonstrate technical and economic feasibility; Produce products for market development; Generate operational data and scale up data so a commercial scale plant can be designed and built.

173

Extractable work from ensembles of quantum batteries. Entanglement helps  

E-Print Network [OSTI]

Motivated by the recent interest in thermodynamics of micro- and mesoscopic quantum systems we study the maximal amount of work that can be reversibly extracted from a quantum system used to store temporarily energy. Guided by the notion of passivity of a quantum state we show that entangling unitary controls extract in general more work than independent ones. In the limit of large number of copies one can reach the thermodynamical bound given by the variational principle for free energy.

Robert Alicki; Mark Fannes

2012-11-19T23:59:59.000Z

174

Simulation of slow extraction in the Main Injector  

SciTech Connect (OSTI)

Recent modifications to the tracking code TEAPOT have allowed us to simulate both ramp and slow extraction in the Fermilab Main Injector at 120 GeV/c. This calculation includes all the magnetic field and alignment errors. Preliminary results from this calculation are presented here and compared with other calculations. Further studies to optimize the strength and ramp of the extraction elements are in progress.

Mishra, C.S.; Harfoush, F.A.; Johnstone, J.

1993-08-01T23:59:59.000Z

175

Extraction of cesium and strontium from nuclear waste  

DOE Patents [OSTI]

Cesium is extracted from acidified nuclear waste by contacting the waste with a bis 4,4'(5) [1-hydroxy-2-ethylhexyl]benzo 18-crown-6 compound and a cation exchanger in a matrix solution. Strontium is extracted from acidified nuclear waste by contacting the waste with a bis 4,4'(5') [1-hydroxyheptyl]cyclohexo 18-crown-6 compound, and a cation exchanger in a matrix solution.

Davis, Jr., Milton W. (Lexington, SC); Bowers, Jr., Charles B. (Columbia, SC)

1988-01-01T23:59:59.000Z

176

Method for liquid chromatographic extraction of strontium from acid solutions  

DOE Patents [OSTI]

A method and apparatus for extracting strontium and technetium values from biological, industrial and environmental sample solutions using a chromatographic column is described. An extractant medium for the column is prepared by generating a solution of a diluent containing a Crown ether and dispersing the solution on a resin substrate material. The sample solution is highly acidic and is introduced directed to the chromatographic column and strontium or technetium is eluted using deionized water.

Horwitz, E. Philip (Naperville, IL); Dietz, Mark L. (Evanston, IL)

1992-01-01T23:59:59.000Z

177

Extraction of uranium from spent fuels using liquefied gases  

SciTech Connect (OSTI)

For reprocessing of spent nuclear fuels, a novel method to extract actinides from spent fuel using highly compressed gases, nitrogen dioxide and carbon dioxide was proposed. As a fundamental study, the nitrate conversion with liquefied nitrogen dioxide and the nitrate extraction with supercritical carbon dioxide were demonstrated by using uranium dioxide powder, uranyl nitrate and tri-n-butylphosphate complex in the present study. (authors)

Sawada, Kayo; Hirabayashi, Daisuke; Enokida, Youichi [EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan)

2007-07-01T23:59:59.000Z

178

Supercritical extraction of organic mixtures from soil-water slurries  

E-Print Network [OSTI]

for hazardous waste remediation. One such innovative technology that has been shown to be an efflcient means by which to remove high molecular weight organics &om soil is supercritical fluid extraction (SCFE). A supercritical fluid (SCF) exists in the region... for hazardous waste remediation. One such innovative technology that has been shown to be an efflcient means by which to remove high molecular weight organics &om soil is supercritical fluid extraction (SCFE). A supercritical fluid (SCF) exists in the region...

Green, Lynda Ann

2012-06-07T23:59:59.000Z

179

E-Print Network 3.0 - automatic road extraction Sample Search...  

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

with no tuning, as well as extracting the road midline using residual... and watershed image processing techniques to extract a road network in the vicinity of the vehicle,...

180

Pitch Production Using Solvent Extraction of Coal: Suitability as Carbon Anode Precursor.  

E-Print Network [OSTI]

??Albertan coal has been used to produce extracts as precursor for production of anode coke. Coal extractability was studied using digestion with Tetralin in a… (more)

Mohammad Ali Pour, Mehdi

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

E-Print Network 3.0 - automatable method extract Sample Search...  

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

on Candidate Data for Collocation Extraction Stefan Evert and Hannah Kermes Summary: .de Abstract The paper describes ongoing work on the evaluation of methods for extract- ing...

182

Advanced Extraction Methods for Actinide/Lanthanide Separations  

SciTech Connect (OSTI)

The separation of An(III) ions from chemically similar Ln(III) ions is perhaps one of the most difficult problems encountered during the processing of nuclear waste. In the 3+ oxidation states, the metal ions have an identical charge and roughly the same ionic radius. They differ strictly in the relative energies of their f- and d-orbitals, and to separate these metal ions, ligands will need to be developed that take advantage of this small but important distinction. The extraction of uranium and plutonium from nitric acid solution can be performed quantitatively by the extraction with the TBP (tributyl phosphate). Commercially, this process has found wide use in the PUREX (plutonium uranium extraction) reprocessing method. The TRUEX (transuranium extraction) process is further used to coextract the trivalent lanthanides and actinides ions from HLLW generated during PUREX extraction. This method uses CMPO [(N, N-diisobutylcarbamoylmethyl) octylphenylphosphineoxide] intermixed with TBP as a synergistic agent. However, the final separation of trivalent actinides from trivalent lanthanides still remains a challenging task. In TRUEX nitric acid solution, the Am(III) ion is coordinated by three CMPO molecules and three nitrate anions. Taking inspiration from this data and previous work with calix[4]arene systems, researchers on this project have developed a C3-symmetric tris-CMPO ligand system using a triphenoxymethane platform as a base. The triphenoxymethane ligand systems have many advantages for the preparation of complex ligand systems. The compounds are very easy to prepare. The steric and solubility properties can be tuned through an extreme range by the inclusion of different alkoxy and alkyl groups such as methyoxy, ethoxy, t-butoxy, methyl, octyl, t-pentyl, or even t-pentyl at the ortho- and para-positions of the aryl rings. The triphenoxymethane ligand system shows promise as an improved extractant for both tetravalent and trivalent actinide recoveries form high level liquid wastes and a general actinide clean-up procedure. The selectivity of the standard extractant for tetravalent actinides, (N,N-diisobutylcarbamoylmethyl) octylphenylphosphineoxide (CMPO), was markedly improved by the attachment of three CMPO-like functions onto a triphenoxymethane platform, and a ligand that is both highly selective and effective for An(IV) ions was isolated. A 10 fold excess of ligand will remove virtually all of the 4+ actinides from the acidic layer without extracting appreciable quantities of An(III) and Ln(III) unlike simple CMPO ligands. Inspired by the success of the DIAMEX industrial process for extractions, three new tripodal chelates bearing three diglycolamide and thiodiglycolamide units precisely arranged on a triphenoxymethane platform have been synthesized for an highly efficient extraction of trivalent f-element cations from nitric acid media. A single equivalent of ligand will remove 80% of the Ln(III) ion from the acidic layer since the ligand is perfectly suited to accommodate the tricapped trigonal prismatic geometry preferred by the metal center. The ligand is perhaps the most efficient binder available for the heavier lanthanides and due to this unique attribute, the extraction event can be easily followed by 1H NMR spectroscopy confirming the formation of a TPP complex. The most lipophilic di-n-butyl tris-diglycolamide was found to be a significantly weaker extractant in comparison to the di-isopropyl analogs. The tris-thiodiglycolamide derivative proved to be an ineffective chelate for f-elements and demonstrated the importance of the etheric oxygens in the metal binding. The results presented herein clearly demonstrate a cooperative action of these three ligating groups within a single molecule, confirmed by composition and structure of the extracted complexes, and since actinides prefer to have high coordination numbers, the ligands should be particularly adept at binding with three arms. The use of such an extractant permits the extraction of metal ions form highly acidic environment through the ability

Scott, M.J.

2005-12-01T23:59:59.000Z

183

Methodology for extracting local constants from petroleum cracking flows  

DOE Patents [OSTI]

A methodology provides for the extraction of local chemical kinetic model constants for use in a reacting flow computational fluid dynamics (CFD) computer code with chemical kinetic computations to optimize the operating conditions or design of the system, including retrofit design improvements to existing systems. The coupled CFD and kinetic computer code are used in combination with data obtained from a matrix of experimental tests to extract the kinetic constants. Local fluid dynamic effects are implicitly included in the extracted local kinetic constants for each particular application system to which the methodology is applied. The extracted local kinetic model constants work well over a fairly broad range of operating conditions for specific and complex reaction sets in specific and complex reactor systems. While disclosed in terms of use in a Fluid Catalytic Cracking (FCC) riser, the inventive methodology has application in virtually any reaction set to extract constants for any particular application and reaction set formulation. The methodology includes the step of: (1) selecting the test data sets for various conditions; (2) establishing the general trend of the parametric effect on the measured product yields; (3) calculating product yields for the selected test conditions using coupled computational fluid dynamics and chemical kinetics; (4) adjusting the local kinetic constants to match calculated product yields with experimental data; and (5) validating the determined set of local kinetic constants by comparing the calculated results with experimental data from additional test runs at different operating conditions.

Chang, Shen-Lin (Woodridge, IL); Lottes, Steven A. (Naperville, IL); Zhou, Chenn Q. (Munster, IN)

2000-01-01T23:59:59.000Z

184

Semi-automated Extraction of Digital Objective Prism Spectra  

E-Print Network [OSTI]

We describe a method for the extraction of spectra from high dispersion objective prism plates. Our method is a catalogue driven plate solution approach, making use of the Right Ascension and Declination coordinates for the target objects. In contrast to existing methods of photographic plate reduction, we digitize the entire plate and extract spectra off-line. This approach has the advantages that it can be applied to CCD objective prism images, and spectra can be re-extracted (or additional spectra extracted) without having to re-scan the plate. After a brief initial interactive period, the subsequent reduction procedure is completely automatic, resulting in fully-reduced, wavelength justified spectra. We also discuss a method of removing stellar continua using a combination of non-linear filtering algorithms. The method described is used to extract over 12,000 spectra from a set of 92 objective prism plates. These spectra are used in an associated project to develop automated spectral classifiers based on neural networks.

Coryn A. L. Bailer-Jones; Mike Irwin; Ted von Hippel

1998-04-23T23:59:59.000Z

185

Deep liquid-chromatographic purification of uranium extract from technetium  

SciTech Connect (OSTI)

The recycling of uranium in the nuclear fuel cycle requires the removal of a number of radioactive and stable impurities like {sup 99}Tc from spent fuels. In order to improve the grade of uranium extract purification from technetium the method of liquid chromatography and the apparatus for its performance have been developed. Process of technetium extraction and concentrating in aqueous solution containing reducing agent has been studied on simulated solutions (U-Tc-HNO{sub 3}-30% TBP-isoparM). The dynamic tests of the method have been carried out on the laboratory unit. Solution of diformyl-hydrazine in nitric acid was used as a stationary phase. Silica gel with specific surface of 186 m{sup 2}/g was used as a carrier of the stationary phase. It is shown that the volume of purified extract increases as the solution temperature increases, concentration of reducing agent increases and extract flow rate decreases. It is established that the technetium content in uranium by this method could achieve a value below 0.3 ppm. Some variants of overload and composition of the stationary phase containing the extracted technetium have been offered and tested. It is defined that the method provides reduction of processing medium-active wastes by more than 10 times during finish refining process. (authors)

Volk, V.; Dvoeglazov, K; Podrezova, L.; Vidanov, V.; Pavlyukevich, E. [OAO State Research Center - VNIINM, Rogov str., bld. 5, Moscow (Russian Federation)

2013-07-01T23:59:59.000Z

186

Parameter extraction from I-V characteristics of PV devices  

SciTech Connect (OSTI)

Device parameters such as series and shunt resistances, saturation current and diode ideality factor influence the behaviour of the current-voltage (I-V) characteristics of solar cells and photovoltaic modules. It is necessary to determine these parameters since performance parameters are derived from the I-V curve and information provided by the device parameters are useful in analyzing performance losses. This contribution presents device parameters of CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells, as well as, CuInSe{sub 2}, mono- and multicrystalline silicon modules determined using a parameter extraction routine that employs Particle Swarm Optimization. The device parameters of the CuIn(Se,S){sub 2}- and Cu(In,Ga)(Se,S){sub 2}-based solar cells show that the contribution of recombination mechanisms exhibited by high saturation current when coupled with the effects of parasitic resistances result in lower maximum power and conversion efficiency. Device parameters of photovoltaic modules extracted from I-V characteristics obtained at higher temperature show increased saturation current. The extracted values also reflect the adverse effect of temperature on parasitic resistances. The parameters extracted from I-V curves offer an understanding of the different mechanisms involved in the operation of the devices. The parameter extraction routine utilized in this study is a useful tool in determining the device parameters which reveal the mechanisms affecting device performance. (author)

Macabebe, Erees Queen B. [Department of Electronics, Computer and Communications Engineering, Ateneo de Manila University, Loyola Heights, Quezon City 1108 (Philippines); Department of Physics and Centre for Energy Research, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031 (South Africa); Sheppard, Charles J. [Department of Physics, University of Johannesburg, PO Box 524, Auckland Park 2006 (South Africa); Dyk, E. Ernest van [Department of Physics and Centre for Energy Research, Nelson Mandela Metropolitan University, PO Box 77000, Port Elizabeth 6031 (South Africa)

2011-01-15T23:59:59.000Z

187

The Kicker Systems for the PS Multi-turn Extraction  

E-Print Network [OSTI]

A five-turn continuous extraction has up to now been used to transfer the proton beam from the CERN PS to the SPS. This extraction uses an electrostatic septum to cut the filament beam into five slices, causing losses of about 15 %. These losses would be an even greater drawback when the beam intensity is increased for the CERN Neutrinos to Gran Sasso (CNGS) facility. To overcome this Multi-Turn Extraction (MTE) has been implemented, in which the beam is separated, prior to extraction, into a central beam core and four islands. Each beamlet is extracted using a set of kickers and a magnetic septum. For the kickers two new pulse generators have been built, each containing a lumped element Pulse Forming Network (PFN) of 12.5 W, 80 kV and 10.5 ms. For cost reasons existing 15 W transmission line kicker magnets are reused. The PFN characteristic impedance deliberately mismatches that of the magnets to allow a higher maximum kick. The PFN design has been optimised such that undesirable side-effects of the impedanc...

Sermeus, L; Fowler, T

2010-01-01T23:59:59.000Z

188

A Model of Stroke Extraction from Chinese Character Images Ruini Cao, Chew Lim Tan  

E-Print Network [OSTI]

A Model of Stroke Extraction from Chinese Character Images Ruini Cao, Chew Lim Tan School a new model of stroke extraction for Chinese characters. One problem for stroke extraction is how to extract primary strokes. Another major problem is to solve the segmentation ambiguities at intersection

Tan, Chew Lim

189

Rules and Regulations Governing Leasing for Production or Extraction of  

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

Leasing for Production or Leasing for Production or Extraction of Oil, Gas and Other Minerals From Onshore State-Owned Lands (Mississippi) Rules and Regulations Governing Leasing for Production or Extraction of Oil, Gas and Other Minerals From Onshore State-Owned Lands (Mississippi) < Back Eligibility Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Retail Supplier Utility Program Info State Mississippi Program Type Environmental Regulations Siting and Permitting Provider Mississippi Development Authority The Rules and Regulations Governing Leasing for Production or Extraction of Oil, Gas and Other Minerals From Onshore State-Owned Lands is applicable to the natural gas sector. This law delegates the power to lease, for mineral

190

Thermal extraction analysis of five Los Azufres production wells  

SciTech Connect (OSTI)

Thermal energy extraction from five wells supplying 5-MWe wellhead generators in three zones of the Los Azufres geothermal field has been examined from production and chemical data compiled over 14-years of operation. The data, as annual means, are useful in observing small-scale changes in reservoir performance with continuous production. The chemical components are chloride for quality control and the geothermometer elements for reservoir temperatures. The flowrate and fluid enthalpy data are used to calculate the thermal extraction rates. Integration of these data provides an estimate of the total energy extracted from the zone surrounding the well. The combined production and chemical geothermometer data are used to model the produced fluid as coming from just-penetrating wells for which the annual produced mass originates from a series of concentric hemispheric shells moving out into the reservoir. Estimates are made of the drawdown distance into the reservoir and the far-field conditions.

Kruger, Paul; Quijano, Luis

1995-01-26T23:59:59.000Z

191

Development of carbon-carbon composites from solvent extracted pitch  

SciTech Connect (OSTI)

There are several methods used to fabricate carbon-carbon composites. One used extensively in the fabrication of aerospace components such as rocket nozzles and reentry vehicle nosetips, as well as commercial components for furnace fixturing and glass manufacturing, is the densification of a woven preform with molten pitch, and the subsequent conversion of the pitch to graphite through heat treatment. Two types of pitch are used in this process; coal tar pitch and petroleum pitch. The objective of this program was to determine if a pitch produced by the direct extraction of coal could be used as a substitute for these pitches in the fabrication of carbon-carbon composites. The program involved comparing solvent extracted pitch with currently accepted pitches and rigidizing a carbon-carbon preform with solvent extracted pitch for comparison with carbon-carbon fabricated with currently available pitch.

NONE

1996-06-24T23:59:59.000Z

192

Solvent extraction of heptavalent technetium by tributyl phosphate  

SciTech Connect (OSTI)

The solvent extraction of heptavalent technetium from aqueous nitric or hydrochloric acid by tributyl phosphate in n-dodecane (TBP-NDD) has been studied over a wide range of TBP and acid concentrations at 25, 50, and 60/sup 0/C. The extraction was found to proceed according to the reaction 3TBP + H/sup +/ + TcO/sub 4//sup -/ ..-->.. (HTcO/sub 4/ 3TBP). A discussion of possible reaction mechanisms is presented, along with values for ..delta..G, ..delta..H, ..delta..S, and the equilibrium constant for the extraction reaction. Finally, evidence for the coextraction of technetium by uranyl ions is discussed. 10 figures, 5 tables.

Pruett, D.J.

1981-01-01T23:59:59.000Z

193

Event extraction from corefering mentions to enrich semantic web metadata  

Science Journals Connector (OSTI)

Since an enormous amount of information is available on the web and much time is needed to find and read the desired information, users require precise information from the documents. More specifically, most users are interested in precise information about events occurring in different parts of the world, such as when and where the event has occurred and who was involved in the event. The task of finding such information is called event extraction. Event extraction from text documents is an important task in the field of natural language processing, as it helps improve information retrieval and summarisation, as well as enriching the semantic web with event-based metadata. This paper provides a method to extract event arguments from corefering sentences of a particular event instance using rule learning based on rough sets. It also provides a metadata adoption strategy to exploit the results in the semantic web environment as metadata.

S. Sangeetha; Michael Arock

2014-01-01T23:59:59.000Z

194

Characterization of polar extracts from two petroleum-derived fuels  

SciTech Connect (OSTI)

Petroleum fuels of marginal stability have been used as a source of nitrogen-rich polar extracts. Polar compounds were isolated by mild acid extraction followed by silica gel adsorption. The extracts were characterized and identified by combined capillary column GC/MS. Both fuels were studied by two methods under accelerated storage conditions, bottle tests and oxygen overpressure. Bottle tests were conducted at 80/sup 0/C for 14 days and the oxygen overpressure at both 65 and 43/sup 0/C for 6 days and 4 weeks respectively. Filterable insolubles and adherent gum were measured for both methods. Peroxide numbers were determined by ASTM D3703-85 for both stressed and original fuel samples.

Mushrush, G.W.; Beal, E.J.; Morris, R.E.; Cooney, J.V.; Hazlett, R.N.; Watkins, J.M.

1989-01-01T23:59:59.000Z

195

System and method for preparing near-surface heavy oil for extraction using microbial degradation  

DOE Patents [OSTI]

A system and method for enhancing the recovery of heavy oil in an oil extraction environment by feeding nutrients to a preferred microbial species (bacteria and/or fungi). A method is described that includes the steps of: sampling and identifying microbial species that reside in the oil extraction environment; collecting fluid property data from the oil extraction environment; collecting nutrient data from the oil extraction environment; identifying a preferred microbial species from the oil extraction environment that can transform the heavy oil into a lighter oil; identifying a nutrient from the oil extraction environment that promotes a proliferation of the preferred microbial species; and introducing the nutrient into the oil extraction environment.

Busche, Frederick D. (Highland Village, TX); Rollins, John B. (Southlake, TX); Noyes, Harold J. (Golden, CO); Bush, James G. (West Richland, WA)

2011-04-12T23:59:59.000Z

196

Dual phase polymer gel electrolyte based on non-woven poly(vinylidenefluoride-co-hexafluoropropylene)–layered clay nanocomposite fibrous membranes for lithium ion batteries  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? P(VdF-co-HFP)–clay nanocomposite based electrospun membranes are prepared. ? The membranes are used as polymer gel electrolyte (PGE) in lithium ion batteries. ? The composite PGE shows ionic conductivity of 5.5 mS cm{sup ?1} at room temperature. ? Li/PGE/LiFePO{sub 4} cell delivers initial discharge capacity of 160 mAh g{sup ?1}. ? The use of prepared electrolyte significantly improved the cell performance. -- Abstract: A new approach for fabricating polymer gel electrolytes (PGEs) based on electrospun poly(vinylidenefluoride-co-hexafluoropropylene) (P(VdF-co-HFP)) incorporated with layered nanoclay has been employed to enhance the ionic conductivity and electrochemical properties of P(VdF-co-HFP) without compromising its mechanical strength. The effect of layered nanoclay on properties of membranes has been evaluated by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). Surface morphology of the membranes has been studied using field-emission scanning electron microscopy (FE-SEM). Polymer gel electrolytes are prepared by soaking the fibrous membrane into 1 M LiPF{sub 6} in EC/DEC. The electrochemical studies show that incorporation of layered nanoclay into the polymer matrix greatly enhanced the ionic conductivity and compatibility with lithium electrodes. The charge–discharge properties and cycling performance of Li/LiFePO{sub 4} cells comprising nanocomposite polymer gel electrolytes have been evaluated at room temperature.

Shubha, Nageswaran [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore)] [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore); Prasanth, Raghavan [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore) [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore); Energy Research Institute - NTU (ERI-N) Research Techno Plaza, 50 Nanyang Drive, Singapore 637553 (Singapore); TUM-CREATE Center for Electromobility, Nanyang Technological University, Singapore 637553 (Singapore); Hoon, Hng Huey [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore)] [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore); Srinivasan, Madhavi, E-mail: madhavi@ntu.edu.sg [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore) [School of Materials Science and Engineering, Nanyang Technological University, Block N4.1, 50 Nanyang Avenue, Singapore 639798 (Singapore); Energy Research Institute - NTU (ERI-N) Research Techno Plaza, 50 Nanyang Drive, Singapore 637553 (Singapore); TUM-CREATE Center for Electromobility, Nanyang Technological University, Singapore 637553 (Singapore)

2013-02-15T23:59:59.000Z

197

A study of a solvent extraction desalination process  

E-Print Network [OSTI]

Major Subject: Chemical Engineering A STDDY OF A SOLVENT EXTRACTION DESALINATION PROCESS A Thesis By ARTHUR RANSOM MCFERRIN, JR, Approved as to style and content by: (Chairman of Committee) (Head of De artment) (Member) (M ' er) (Member) (Member...) (Member) August 1969 111 ABSTRACT A Study of a Solve. it Extr~c' ion Desalination Process (August 1969) Arthur Ransom McFerrin, Jr. , B. S. , Texas A&M University Directed by: Dr. R. R. Davison A study of a desalination by solvent extraction...

McFerrin, Arthur Ransom

2012-06-07T23:59:59.000Z

198

Magma energy extraction - Annual Report for FY88  

SciTech Connect (OSTI)

Thermal energy contained in magmatic systems represents a huge potential resource. In the US, useful energy contained in molten and partially-molten magma within the upper 10 km of the crust has been estimated at 50,000 to 500,000 Quads. The objective of the Magma Energy Extraction Program is to determine engineering feasibility of locating, accessing and utilizing magma as a viable energy resource. Engineering feasibility will depend on size and depth of the resource; extraction rates; and material life times. 11 refs., 29 figs., 1 tab.

Dunn, J.C. (ed.)

1989-08-01T23:59:59.000Z

199

Rapid automatic keyword extraction for information retrieval and analysis  

DOE Patents [OSTI]

Methods and systems for rapid automatic keyword extraction for information retrieval and analysis. Embodiments can include parsing words in an individual document by delimiters, stop words, or both in order to identify candidate keywords. Word scores for each word within the candidate keywords are then calculated based on a function of co-occurrence degree, co-occurrence frequency, or both. Based on a function of the word scores for words within the candidate keyword, a keyword score is calculated for each of the candidate keywords. A portion of the candidate keywords are then extracted as keywords based, at least in part, on the candidate keywords having the highest keyword scores.

Rose, Stuart J (Richland, WA); Cowley,; Wendy E (Richland, WA); Crow, Vernon L (Richland, WA); Cramer, Nicholas O (Richland, WA)

2012-03-06T23:59:59.000Z

200

Work extraction from heat-powered quantized optomechanical setups  

E-Print Network [OSTI]

We analyze work extraction from an autonomous (self-contained) heat-powered optomechanical setup. The initial state of the quantized mechanical oscillator plays a key role. As the initial mean amplitude of the oscillator decreases, the resulting efficiency increases. In contrast to laser-powered self-induced oscillations, work extraction from a broadband heat bath does not require coherence or phase-locking: an initial phase-averaged coherent state of the oscillator still yields work, as opposed to an initial Fock-state.

David Gelbwaser-Klimovsky; Gershon Kurizki

2015-01-31T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Extraction process for removing metallic impurities from alkalide metals  

DOE Patents [OSTI]

A development is described for removing metallic impurities from alkali metals by employing an extraction process wherein the metallic impurities are extracted from a molten alkali metal into molten lithium metal due to the immiscibility of the alkali metals in lithium and the miscibility of the metallic contaminants or impurities in the lithium. The purified alkali metal may be readily separated from the contaminant-containing lithium metal by simple decanting due to the differences in densities and melting temperatures of the alkali metals as compared to lithium.

Royer, L.T.

1987-03-20T23:59:59.000Z

202

Study of freezing-point depression of selected food extracts  

SciTech Connect (OSTI)

The phenomenon of freezing-point depression that accompanies the solute concentration of selected food extracts was investigated to reveal the characteristics of solid-liquid phase equilibrium. The freezing curves of various food extracts did not exhibit ideal solution behavior in the higher concentration range. The experimental data were fitted to new freezing-point depression equations by the method of nonlinear least squares, and the results clearly indicated that the calculated freezing points at various concentrations were in good agreement with the experimental data. Furthermore, by using the determined parameters, the freezing ratio and the activation coefficient were derived.

Tanaka, Fumihiko [Kagoshima Univ. (Japan). Dept. of Agricultural Systems Engineering; Murata, Satoshi; Habara, Kazuhiro; Amaratunga, K.S.P. [Kyushu Univ., Fukuoka (Japan). Dept. of Agricultural Engineering

1996-12-31T23:59:59.000Z

203

Extracting the Odderon from $pp$ and $\\bar pp$ scattering data  

E-Print Network [OSTI]

Starting from a simple empirical parametrization of the scattering amplitude, successfully describing the dip-bump structure of elastic $pp$ scattering in $t$ at fixed values of $s$, we construct a toy model interpolating between missing energy gaps to extract the Odderon contribution from the difference between $\\bar pp$ and $pp$ elastic and total cross sections. The model is fitted to data from $\\sqrt s=23.5$ GeV to 7 TeV and used to extract the Odderon and its ratio to the Pomeron.

Ster, Andras; Csorgo, Tamas

2015-01-01T23:59:59.000Z

204

Work extraction from heat-powered quantized optomechanical setups  

E-Print Network [OSTI]

We analyze work extraction from an autonomous (self-contained) heat-powered optomechanical setup. The initial state of the quantized mechanical oscillator plays a key role. As the initial mean amplitude of the oscillator decreases, the resulting efficiency increases. In contrast to laser-powered self-induced oscillations, work extraction from a broadband heat bath does not require coherence or phase-locking: an initial phase-averaged coherent state of the oscillator still yields work, as opposed to an initial Fock-state.

David Gelbwaser-Klimovsky; Gershon Kurizki

2014-10-30T23:59:59.000Z

205

Separation of Fischer-Tropsch from Catalyst by Supercritical Extraction.  

SciTech Connect (OSTI)

The objective of this research project is to evaluate the potential of supercritical fluid (SCF) extraction for the recovery and fractionation of the wax product from the slurry bubble column (SBC) reactor of the Fischer-Tropsch (F-T) process. The wax, comprised mostly of branched and linear alkanes with a broad molecular weight distribution up to C{sub 100}, will be extracted with a hydrocarbon solvent that has a critical temperature near the operating temperature of the SBC reactor, i.e., 200-300{degrees}C. Initial work is being performed using n-hexane as the solvent.

Joyce, P.C.; Thies, M.C.

1997-10-31T23:59:59.000Z

206

Acetone as a solvent for extraction of cottonseed oil  

E-Print Network [OSTI]

ACETONE AS A SOLVENT FOR EXTRACTION GP COTTONSEED OIL A Thesis In-Wai Hui June 1950 Approval as to style and content recommended c t Head oi' the Department of Chemical Engineering ACETONE AS A SOLVENT FOR EXT "ACTION OF COTTONSEED OIL A... Thesis In-Nai Hui June 1950 ACETONE AS A SOLVENT FOR EXTRACTION QF COTTONSEED OIL A Thesis Submitted to the Faculty of the Agricultural and Mechanical College of Texas Partis1 Fulfillment of the Recuirements for the Degree of Master of Science...

Hui, In-Wai

2012-06-07T23:59:59.000Z

207

Features of gadolinium and ytterbium extraction by tributyl phosphate from concentrated nitric acid solutions. II. IR spectra of lanthanide extracts  

SciTech Connect (OSTI)

Equilibrium organic phases in extraction systems consisting of tributyl phosphate (TBP) (neat or 1.8 M in CCl{sub 4}) and 8-12 M nitric acid containing Gd or Yb or lanthanide-free have been studied by IR spectroscopy. It was shown that under these conditions lanthanides are extracted as complex trisolvates Ln(NO{sub 3})9{sub 3}{center_dot}mHNO{sub 3}{center_dot}3TBP with m = 3-6. Nitric acid molecules are H-bonded to oxygen atoms of coordinated nitrate ions and do not substitute TBP molecules in coordination sphere of the metal ion.

Nikitina, G.P.; Seredkina, N.V.; Kistopadov, A.A. [Khlopin Radium Institute, St. Petersburg (Russian Federation)

1995-03-01T23:59:59.000Z

208

Organic sponges for cost-effective CVOC abatement. Final report, September 1992--April 1994  

SciTech Connect (OSTI)

Air contaminated with CVOCs (chlorinated volatile organic compounds) arise from air stripping of ground water or from soil and dual phase vapor extraction. A research program was undertaken to develop sorbents better than activated carbon for remediation. Two such sorbents were found: Dow`s XUS polymer and Rohm and Haas` Ambersorb 563 (carbonaceous). Opportunities exist to further develop sorption and biodegradation technologies.

Flanagan, W.P.; Grade, M.M.; Horney, D.P.; Mackenzie, P.D.; Salvo, J.J.; Sivavec, T.M.; Stephens, M.L.

1994-07-01T23:59:59.000Z

209

Wind parameters extraction from aircraft trajectories C. Hurtera,  

E-Print Network [OSTI]

Wind parameters extraction from aircraft trajectories C. Hurtera, , R. Alligiera,b , D. Gianazzaa traffic controllers need to know the current wind magnitude and direction since they impact every flying vessel. The wind may accel- erate or slow down an aircraft, depending on its relative direction

Paris-Sud XI, Université de

210

Solvent extraction of rare-earth metals by carboxylic acids  

SciTech Connect (OSTI)

The solvent extraction of the trivalent lanthanides and yttrium from nitrate media by solutions of carboxylic acids in xylene has been studied. Commercially available carboxylic acids such as Versatic 10 and naphthenic acids were used, as well as model compounds of known structure, such as 2-ethylhexanoic and 3-cyclohexylpropanoic acids. In a few cases, extraction of the metals from sulphate and chloride solutions was also investigated. The dependence of the extraction properties of the carboxylic acids on the atomic number of the lanthanide shows a definite relationship to the steric bulk of the carboxylic acid molecule quantified by means of the steric parameter, E{sub s}{prime} of the substituent alkyl group. The stoichiometries of the extracted complexes for representative light (La), middle (Gd) and heavy (Lu) rare-earth metals were investigated by the slope-analysis technique for a sterically hindered acid (Versatic 10 acid; -E{prime}{sub s} = 3.83) and an acid with low steric hindrance (3-cyclohexylpropanoic acid; -E{prime}{sub s} = 0.28). 14 refs., 13 figs., 3 tabs.

Preez, A.C. du; Preston, J.S. [Mintek, Randburg (South Africa)

1992-04-01T23:59:59.000Z

211

Rule extraction from support vector machines: A review  

Science Journals Connector (OSTI)

Over the last decade, support vector machine classifiers (SVMs) have demonstrated superior generalization performance to many other classification techniques in a variety of application areas. However, SVMs have an inability to provide an explanation, ... Keywords: Data mining, Information extraction, Knowledge discovery, Machine learning, Pattern recognition applications, SVMs

Nahla Barakat; Andrew P. Bradley

2010-12-01T23:59:59.000Z

212

Surface Properties of Basic Components Extracted from Petroleum Crude Oil  

Science Journals Connector (OSTI)

Surface Properties of Basic Components Extracted from Petroleum Crude Oil ... Ratios in oils are inherited from source rock kerogens with minor change, are conserved during catagenesis and biodegrdn., are robust correlation parameters, and facilitate the classification of petroleums in terms of the depositional facies and lithol. of the source rock. ...

Andreas L. Nenningsland; Se?bastien Simon; Johan Sjo?blom

2010-11-10T23:59:59.000Z

213

Extraction of Basic Components from Petroleum Crude Oil  

Science Journals Connector (OSTI)

Extraction of Basic Components from Petroleum Crude Oil ... Ratios in oils are inherited from source rock kerogens with minor change, are conserved during catagenesis and biodegrdn., are robust correlation parameters, and facilitate the classification of petroleums in terms of the depositional facies and lithol. of the source rock. ...

Se?bastien Simon; Andreas L. Nenningsland; Emily Herschbach; Johan Sjo?blom

2009-12-01T23:59:59.000Z

214

PRODUCTION OF CARBON PRODUCTS USING A COAL EXTRACTION PROCESS  

SciTech Connect (OSTI)

The purpose of this DOE-funded effort is to develop technologies for carbon products from coal-derived feed-stocks. Carbon products can include precursor materials such as solvent extracted carbon ore (SECO) and synthetic pitch (Synpitch). In addition, derived products include carbon composites, fibers, foams and others.

Dady Dadyburjor; Chong Chen; Elliot B. Kennel; Liviu Magean; Peter G. Stansberry; Alfred H. Stiller; John W. Zondlo

2005-12-12T23:59:59.000Z

215

TTI model: model extracting individual's curiosity level in urban spaces  

Science Journals Connector (OSTI)

Recommendation systems have become widespread, however these systems only determine information inputted from the customers through a browser, and cannot be used when actually moving around outside. This paper presents TTI Model, a model extracting individual's ... Keywords: Bayesian Networks, curiosity, urban experience, user analysis

Chihiro Sato; Shigeyuki Takeuchi; Takuo Imbe; Shuichi Ishibashi; Masahiko ?nami; Masa Inakage; Naohito Okude

2010-08-01T23:59:59.000Z

216

Kernel Machine Based Feature Extraction Algorithms for Regression Problems  

E-Print Network [OSTI]

Kernel Machine Based Feature Extraction Algorithms for Regression Problems Csaba Szepesv´ari 1 and Andr´as Kocsor and Korn´el Kov´acs 2 Abstract. In this paper we consider two novel kernel machine based performance of the algorithm. The second algo- rithm combines kernel machines with average derivative

Szepesvari, Csaba

217

Psycho-acoustically motivated formant feature extraction Bea Valkenier  

E-Print Network [OSTI]

Psycho-acoustically motivated formant feature extraction Bea Valkenier University of Groningen Groningen, the Netherlands b.valkenier@ai.rug.nl Dirkjan Krijnders University of Groningen Groningen, the Netherlands j.d.krijnders@ai.rug.nl Ronald A.J. van Elburg1 University of Groningen Groningen, the Netherlands

van Elburg, Ronald A.J.

218

Multidocument Summarization via Information Extraction Michael White and Tanya Korelsky  

E-Print Network [OSTI]

,yung,pierce,wkiri@cs.cornell.edu ABSTRACT We present and evaluate the initial version of RIPTIDES, a system that combines information extraction techniques. This paper presents and evaluates the initial version of RIPTIDES, a system to support user- directed multidocument summarization. (RIPTIDES stands for RapIdly Portable Translingual

Ng, Vincent

219

Extraction of ethanol from water with liquid propylene  

SciTech Connect (OSTI)

To separate EtOH from water by distillation requires 40 to 50 times the minimum Gibbs free energy of mixing. Also, EtOH forms an azeotrope with water, limiting the EtOH purity to 92%. These considerations have prompted investigations of solvent extraction. This paper describes the use of liquid propylene as solvent. The process application is also described. (DLC)

Victor, J.G.

1983-01-01T23:59:59.000Z

220

Development of alternate extractant systems for fast reactor fuel cycle  

SciTech Connect (OSTI)

Due to the limitations of TBP in processing of high burn-up, Pu-rich fast reactor fuels, there is a need to develop alternate extractants for fast reactor fuel processing. In this context, our Centre has been examining the suitability of alternate tri-alkyl phosphates. Third phase formation in the extraction of Th(IV) by TBP, tri-n-amyl phosphate (TAP) and tri-2-methyl-butyl phosphate (T2MBP) from nitric acid media has been investigated under various conditions to derive conclusions on their application for extraction of Pu at macro levels. The chemical and radiolytic degradation of tri-n-amyl-phosphate (TAP) diluted in normal paraffin hydrocarbon (NPH) in the presence of nitric acid has been investigated by the measurement of plutonium retention in organic phase. The potential application of room temperature ionic liquids (RTILs) for reprocessing of spent nuclear fuel has been explored. Extraction of uranium (VI) and palladium (II) from nitric acid medium by commercially available RTIL and tri-n-butyl phosphate solution in RTIL have been studied and the feasibility of electrodeposition of uranium as uranium oxide (UO{sub 2}) and palladium (II) as metallic palladium from the loaded organic phase have been demonstrated. This paper describes results of the above studies and discusses the suitability of the systems for fast reactor fuel reprocessing. (authors)

Vasudeva Rao, P.R.; Suresh, A.; Venkatesan, K.A.; Srinivasan, T.G.; Raj, Baldev [Indira Gandhi Centre for Atomic Research, Kalpakkam - 603 102 (India)

2007-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Supercritical Fluid Extraction and Separation of Uranium from Other Actinides  

SciTech Connect (OSTI)

This paper investigates the feasibility of separating uranium from other actinides by using supercritical fluid carbon dioxide (sc-CO2) as a solvent modified with tri-n-butylphosphate (TBP) for the development of an extraction and counter current stripping technique, which would be a more efficient and environmentally benign technology for used nuclear fuel reprocessing compared to traditional solvent extraction. Several actinides (U(VI), Np(VI), Pu(IV), and Am(III)) were extracted in sc-CO2 modified with TBP over a range of nitric acid concentrations and then the actinides were exposed to reducing and complexing agents to suppress their extractability. According to this study, the separation of uranium from plutonium in sc-CO2 modified with TBP was successful at nitric acid concentrations of less than 3 M in the presence of acetohydroxamic acid or oxalic acid, and the separation of uranium from neptunium was successful at nitric acid concentrations of less than 1 M in the presence of acetohydroxamic acid, oxalic acid, or sodium nitrite.

Donna L. Quach; Bruce J. Mincher; Chien M. Wai

2014-06-01T23:59:59.000Z

222

Service extraction from operator procedures in process industries  

Science Journals Connector (OSTI)

Procedures are a common knowledge form in process industries such as refineries. A typical refinery captures hundreds of procedures documenting actions that operators must follow. Maintaining the action-knowledge contained in these procedures is important ... Keywords: heuristics, knowledge modules, knowledge representation, service extraction

Jingwen He; Sandeep Purao; Jon Becker; David Strobhar

2011-05-01T23:59:59.000Z

223

Logistic curves, extraction costs and effective peak oil  

Science Journals Connector (OSTI)

Debates about the possibility of a near-term maximum in world oil production have become increasingly prominent over the past decade, with the focus often being on the quantification of geologically available and technologically recoverable amounts of oil in the ground. Economically, the important parameter is not a physical limit to resources in the ground, but whether market price signals and costs of extraction will indicate the efficiency of extracting conventional or nonconventional resources as opposed to making substitutions over time for other fuels and technologies. We present a hybrid approach to the peak-oil question with two models in which the use of logistic curves for cumulative production are supplemented with data on projected extraction costs and historical rates of capacity increase. While not denying the presence of large quantities of oil in the ground, even with foresight, rates of production of new nonconventional resources are unlikely to be sufficient to make up for declines in availability of conventional oil. Furthermore we show how the logistic-curve approach helps to naturally explain high oil prices even when there are significant quantities of low-cost oil yet to be extracted.

Robert J. Brecha

2012-01-01T23:59:59.000Z

224

Waste Biomass-Extracted Surfactants for Heavy Oil Removal  

Science Journals Connector (OSTI)

The potential synergism between biobased surfactants, produced from the alkaline extraction of waste biomass, and a synthetic surfactant was assessed. ... Since the principles of soil washing (critical Ca) were first developed for reservoir engineering, one expects that the ultralow (surfactant-enhanced oil recovery operations. ...

Matthew D. Baxter; Edgar Acosta; Enzo Montoneri; Silvia Tabasso

2014-02-03T23:59:59.000Z

225

Extracting the Green's function from measurements of the energy flux  

E-Print Network [OSTI]

Extracting the Green's function from measurements of the energy flux Roel Sniedera) Center for Wave in acoustics from measurements of the energy flux through an arbitrary closed surface surrounding both sources locations, rA and rB. In these experiments one first measures the total energy flux through a closed surface

Snieder, Roel

226

Publish by Abstract RNA Extraction From Different Apple Tissues  

E-Print Network [OSTI]

Publish by Abstract RNA Extraction From Different Apple Tissues Rich in Polyphenols. An efficient procedure for isolating RNA from bud, internodal shoot, flower, and fruit tissues of apple has in apple fruit and flower tissues. Isolated RNA is of high qual- ity and is undegraded as assessed

Korban, Schuyler S.

227

An integrated discriminative probabilistic approach to information extraction  

Science Journals Connector (OSTI)

Probabilistic graphical models for sequence data enable us to effectively deal with inherent uncertainty in many real-world domains. However, they operate on a mostly propositional level. Logic approaches, on the other hand, can compactly represent a ... Keywords: first-order logic, information extraction, probabilistic graphical models, text mining

Xiaofeng Yu; Wai Lam; Bo Chen

2009-11-01T23:59:59.000Z

228

Anomaly Extraction in Backbone Networks using Association Rules  

E-Print Network [OSTI]

Anomaly Extraction in Backbone Networks using Association Rules Daniela Brauckhoff ETH Zurich Zurich, Switzerland brauckhoff@tik.ee.ethz.ch Xenofontas Dimitropoulos ETH Zurich Zurich, Switzerland fontas@tik.ee.ethz.ch Arno Wagner ETH Zurich Zurich, Switzerland wagner@tik.ee.ethz.ch Kavè Salamatian

Paris-Sud XI, Université de

229

Using Gazetteers in Discriminative Information Extraction Andrew Smith  

E-Print Network [OSTI]

Using Gazetteers in Discriminative Information Extraction Andrew Smith Division of Informatics University of Edinburgh United Kingdom a.p.smith-2@sms.ed.ac.uk Miles Osborne Division of Informatics model, then decoding using a logarithmic opinion pool (Smith et al., 2005), we may achieve much higher

Osborne, Miles

230

Electromagnetic extraction of energy from Kerr black holes  

E-Print Network [OSTI]

We elucidate the `right' process for energy extraction from Kerr black holes through `FFDE' magnetospheres, free from causality violation. It is shown that the magnetosphere of a Kerr black hole possesses the double-structure, consisting of the inner and outer magnetospheres with the pair-creation gap between them and with respective unipolar batteries at the inner and outer surfaces of the gap.

Isao Okamoto

2005-06-14T23:59:59.000Z

231

Tributylphosphate Extraction Behavior of Bismuthate-Oxidized Americium  

SciTech Connect (OSTI)

Higher oxidation states of americium have long been known; however, options for their preparation in acidic solution are limited. The conventional choice, silver-catalyzed peroxydisulfate, is not useful at nitric acid concentrations above about 0.3 M. We investigated the use of sodium bismuthate as an oxidant for Am3+ in acidic solution. Room-temperature oxidation produced AmO2 2+ quantitatively, whereas oxidation at 80 °C produced AmO2+ quantitatively. The efficacy of the method for the production of oxidized americium was verified by fluoride precipitation and by spectroscopic absorbance measurements. We performed absorbance measurements using a conventional 1 cm cell for high americium concentrations and a 100 cm liquid waveguide capillary cell for low americium concentrations. Extinction coefficients for the absorbance of Am3+ at 503 nm, AmO2+ at 514 nm, and AmO2 2+ at 666 nm in 0.1 M nitric acid are reported. We also performed solvent extraction experiments with the hexavalent americium using the common actinide extraction ligand tributyl phosphate (TBP) for comparison to the other hexavalent actinides. Contact with 30% tributyl phosphate in dodecane reduced americium; it was nevertheless extracted using short contact times. The TBP extraction of AmO2 2+ over a range of nitric acid concentrations is shown for the first time and was found to be analogous to that of uranyl, neptunyl, and plutonyl ions.

Mincher; Leigh R. Martin; Nicholas C. Schmitt

2008-08-01T23:59:59.000Z

232

Extractive Institutions and Gains From Trade: Evidence from Colonial Africa  

E-Print Network [OSTI]

. First, because of the low population densities of French Africa and the high cost of labor rela- tive (2013) tests this hypothesis in the African context showing that lower population density is correlatedExtractive Institutions and Gains From Trade: Evidence from Colonial Africa Federico Tadei A common

Faraon, Andrei

233

Feature Extraction from Multiple Data Sources Using Genetic Programming  

E-Print Network [OSTI]

from the US Department of Energy/National Nuclear Security Administration's Multispectral Thermal National Laboratory Mail Stop D436, Los Alamos, NM 87545 ABSTRACT Feature extraction from imagery Imager (MTI) satellite1,2,3 combined with USGS 1:24k digital elevation model (DEM) data.4 The Los Alamos

Theiler, James

234

Distributed audio feature extraction for music Stuart Bray  

E-Print Network [OSTI]

Distributed audio feature extraction for music Stuart Bray Computer Science Department University@cs.uvic.ca ABSTRACT One of the important challenges facing music information retrieval (MIR) of audio signals is scaling analysis algo- rithms to large collections. Typically, analysis of audio signals utilizes

Tzanetakis, George

235

ECG Fiducial Points Extraction by Extended Kalman Filtering  

E-Print Network [OSTI]

ECG Fiducial Points Extraction by Extended Kalman Filtering Mahsa Akhbari, Mohammad B. Shamsollahi and Christian Jutten Abstract--Most of the clinically useful information in Electro- cardiogram (ECG) signal can be obtained from the intervals, amplitudes and wave shapes (morphologies). The automatic detection of ECG

Paris-Sud XI, Université de

236

RESEARCH ON CARBON PRODUCTS FROM COAL USING AN EXTRACTIVE PROCESS  

SciTech Connect (OSTI)

This report presents the results of a one-year effort directed at the exploration of the use of coal as a feedstock for a variety of industrially-relevant carbon products. The work was basically divided into three focus areas. The first area dealt with the acquisition of laboratory equipment to aid in the analysis and characterization of both the raw coal and the coal-derived feedstocks. Improvements were also made on the coal-extraction pilot plant which will now allow larger quantities of feedstock to be produced. Mass and energy balances were also performed on the pilot plant in an attempt to evaluate the scale-up potential of the process. The second focus area dealt with exploring hydrogenation conditions specifically aimed at testing several less-expensive candidate hydrogen-donor solvents. Through a process of filtration and vacuum distillation, viable pitch products were produced and evaluated. Moreover, a recycle solvent was also isolated so that the overall solvent balance in the system could be maintained. The effect of variables such as gas pressure and gas atmosphere were evaluated. The pitch product was analyzed and showed low ash content, reasonable yield, good coking value and a coke with anisotropic optical texture. A unique plot of coke yield vs. pitch softening point was discovered to be independent of reaction conditions or hydrogen-donor solvent. The third area of research centered on the investigation of alternate extraction solvents and processing conditions for the solvent extraction step. A wide variety of solvents, co-solvents and enhancement additives were tested with varying degrees of success. For the extraction of raw coal, the efficacy of the alternate solvents when compared to the benchmark solvent, N-methyl pyrrolidone, was not good. However when the same coal was partially hydrogenated prior to solvent extraction, all solvents showed excellent results even for extractions performed at room temperature. Standard analyses of the extraction products indicated that they had the requisite properties of viable carbon-product precursors.

Peter G. Stansberry; Alfred H. Stiller; John W. Zondlo; Chong Chen; Brian Bland; David Fenton

2002-03-31T23:59:59.000Z

237

SOLVENT EXTRACTION FOR URANIUM MOLYBDENUM ALLOY DISSOLUTION FLOWSHEET  

SciTech Connect (OSTI)

H-Canyon Engineering requested the Savannah River National Laboratory (SRNL) to perform two solvent extraction experiments using dissolved Super Kukla (SK) material. The SK material is an uranium (U)-molybdenum (Mo) alloy material of 90% U/10% Mo by weight with 20% 235U enrichment. The first series of solvent extraction tests involved a series of batch distribution coefficient measurements with 7.5 vol % tributylphosphate (TBP)/n-paraffin for extraction from 4-5 M nitric acid (HNO{sub 3}), using 4 M HNO{sub 3}-0.02 M ferrous sulfamate (Fe(SO3NH2)2) scrub, 0.01 M HNO3 strip steps with particular emphasis on the distribution of U and Mo in each step. The second set of solvent extraction tests determined whether the 2.5 wt % sodium carbonate (Na2CO3) solvent wash change frequency would need to be modified for the processing of the SK material. The batch distribution coefficient measurements were performed using dissolved SK material diluted to 20 g/L (U + Mo) in 4 M HNO{sub 3} and 5 M HNO{sub 3}. In these experiments, U had a distribution coefficient greater than 2.5 while at least 99% of the nickel (Ni) and greater than 99.9% of the Mo remained in the aqueous phase. After extraction, scrub, and strip steps, the aqueous U product from the strip contains nominally 7.48 {micro}g Mo/g U, significantly less than the maximum allowable limit of 800 {micro}g Mo/g U. Solvent washing experiments were performed to expose a 2.5 wt % Na2CO3 solvent wash solution to the equivalent of 37 solvent wash cycles. The low Mo batch distribution coefficient in this solvent extraction system yields only 0.001-0.005 g/L Mo extracted to the organic. During the solvent washing experiments, the Mo appears to wash from the organic.

Visser, A; Robert Pierce, R

2007-06-07T23:59:59.000Z

238

Features of gadolinium and ytterbium extraction by tributyl phosphate from concentrated nitric acid solutions. I. Compositions of extracted complexes  

SciTech Connect (OSTI)

Distribution of macroquantity (0.3-1.3 M) of Gd and Yb between neat tri-n-butyl phosphate (TBP) and 5-12 M nitric acid solutions has been studied. The species extracted by TBP from 7-12 M nitric acid solutions are rare-earth metal (REM) nitrate trisolvates containing one or several nitric molecules.

Nikitna, G.P.; Seredkina, N.V.; Listopadov, A.A. [Khlopin Radium Institute, St. Petersburg (Russian Federation)

1995-01-01T23:59:59.000Z

239

Simultaneous Extraction of Flavonoids from Chamaecyparis obtusa Using Deep Eutectic Solvents as Additives of Conventional Extractions Solvents  

Science Journals Connector (OSTI)

......complicated synthetic processes (10). Therefore...solvent in the heating process (60C) for 120 min...Extraction of glycerol from biodiesel into a eutectic based...from palm oil-based biodiesel using ionic liquids...Tian M., Row K.H. Evaluation of alcohol-based deep......

Baokun Tang; Ha Eun Park; Kyung Ho Row

2014-09-01T23:59:59.000Z

240

Development of Novel Sorbents for Uranium Extraction from Seawater  

SciTech Connect (OSTI)

As the uranium resource in terrestrial ores is limited, it is difficult to ensure a long-term sustainable nuclear energy technology. The oceans contain approximately 4.5 billion tons of uranium, which is one thousand times the amount of uranium in terrestrial ores. Development of technologies to recover the uranium from seawater would greatly improve the uranium resource availability, sustaining the fuel supply for nuclear energy. Several methods have been previously evaluated including solvent extraction, ion exchange, flotation, biomass collection, and adsorption; however, none have been found to be suitable for reasons such as cost effectiveness, long term stability, and selectivity. Recent research has focused on the amidoxime functional group as a promising candidate for uranium sorption. Polymer beads and fibers have been functionalized with amidoxime functional groups, and uranium adsorption capacities as high as 1.5 g U/kg adsorbent have recently been reported with these types of materials. As uranium concentration in seawater is only ~3 ppb, great improvements to uranium collection systems must be made in order to make uranium extraction from seawater economically feasible. This proposed research intends to develop transformative technologies for economic uranium extraction from seawater. The Lin group will design advanced porous supports by taking advantage of recent breakthroughs in nanoscience and nanotechnology and incorporate high densities of well-designed chelators into such nanoporous supports to allow selective and efficient binding of uranyl ions from seawater. Several classes of nanoporous materials, including mesoporous silica nanoparticles (MSNs), mesoporous carbon nanoparticles (MCNs), meta-organic frameworks (MOFs), and covalent-organic frameworks (COFs), will be synthesized. Selective uranium-binding liagnds such as amidoxime will be incorporated into the nanoporous materials to afford a new generation of sorbent materials that will be evaluated for their uranium extraction efficiency. The initial testing of these materials for uranium binding will be carried out in the Lin group, but more detailed sorption studies will be carried out by Dr. Taylor-Pashow of Savannah River National Laboratory in order to obtain quantitative uranyl sorption selectivity and kinetics data for the proposed materials. The proposed nanostructured sorbent materials are expected to have higher binding capacities, enhanced extraction kinetics, optimal stripping efficiency for uranyl ions, and enhanced mechanical and chemical stabilities. This transformative research will significantly impact uranium extraction from seawater as well as benefit DOE’s efforts on environmental remediation by developing new materials and providing knowledge for enriching and sequestering ultralow concentrations of other metals.

Lin, Wenbin; Taylor-Pashow, Kathryn

2014-01-08T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

NETL: News Release - DOE Selects Extraction Process Developed by West  

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

September 14, 2000 September 14, 2000 DOE Selects Extraction Process Developed by West Virginia University in New Project to Generate Carbon Products from Coal A lot more can be done with coal than just burning it to generate electricity and steam. Its carbon makeup can be chemically transformed into a variety of value-added solid products - for example, the electrodes used in the electrolytic process that produces aluminum. Now, in an program to expand the uses of coal, the Department of Energy will provide federal funding to advance a process developed at West Virginia University (WVU) that extracts the carbon from coal by using a powerful organic solvent. The product is an ash-free, high-quality carbon material. DOE will provide $289,000 for the one-year project, with WVU contributing $120,610.

242

Method of extracting coal from a coal refuse pile  

DOE Patents [OSTI]

A method of extracting coal from a coal refuse pile comprises soaking the coal refuse pile with an aqueous alkali solution and distributing an oxygen-containing gas throughout the coal refuse pile for a time period sufficient to effect oxidation of coal contained in the coal refuse pile. The method further comprises leaching the coal refuse pile with an aqueous alkali solution to solubilize and extract the oxidized coal as alkali salts of humic acids and collecting the resulting solution containing the alkali salts of humic acids. Calcium hydroxide may be added to the solution of alkali salts of humic acid to form precipitated humates useable as a low-ash, low-sulfur solid fuel.

Yavorsky, Paul M. (Monongahela, PA)

1991-01-01T23:59:59.000Z

243

Extraction of |Vub| with Reduced Dependence on Shape Functions  

SciTech Connect (OSTI)

Using BABAR measurements of the inclusive electron spectrum in B {yields} X{sub u}e{nu} decays and the inclusive photon spectrum in B {yields} X{sub s}{gamma} decays, we extract the magnitude of the CKM matrix element V{sub ub}. The extraction is based on theoretical calculations designed to reduce the theoretical uncertainties by exploiting the assumption that the leading shape functions are the same for all b {yields} q transitions (q is a light quark). The results agree well with the previous analysis, have indeed smaller theoretical errors, but are presently limited by the knowledge of the photon spectrum and the experimental errors on the lepton spectrum.

Golubev, V

2007-09-28T23:59:59.000Z

244

Characterization of the crude oil polar compound extract  

SciTech Connect (OSTI)

This research is designed to determine if there are any naturally occurring constituents in crude oils that can be chemically altered to bring about increased oil production. An extract containing only the polar organic compounds of the crude oil was obtained by using a modification of the ASTM-2007 procedure. Chemical characterization of the polar compounds were carried out using high pressure liquid chromatography (HPLC) and gas chromatography. The HPLC analyses indicated a range of polar organic compound content of 10 crude oils from 1.6% to 12.7%. Wettability determinations show that by adding a small amount of the polar fraction from a crude oil, to a mineral oil, a 40 to 111% change of wettability toward a more oil-wet system will occur, depending on the specific extract used.

Donaldson, E.C.; Crocker, M.E.

1980-10-01T23:59:59.000Z

245

Genetic programming approach to extracting features from remotely sensed imagery  

SciTech Connect (OSTI)

Multi-instrument data sets present an interesting challenge to feature extraction algorithm developers. Beyond the immediate problems of spatial co-registration, the remote sensing scientist must explore a complex algorithm space in which both spatial and spectral signatures may be required to identify a feature of interest. We describe a genetic programming/supervised classifier software system, called Genie, which evolves and combines spatio-spectral image processing tools for remotely sensed imagery. We describe our representation of candidate image processing pipelines, and discuss our set of primitive image operators. Our primary application has been in the field of geospatial feature extraction, including wildfire scars and general land-cover classes, using publicly available multi-spectral imagery (MSI) and hyper-spectral imagery (HSI). Here, we demonstrate our system on Landsat 7 Enhanced Thematic Mapper (ETM+) MSI. We exhibit an evolved pipeline, and discuss its operation and performance.

Theiler, J. P. (James P.); Perkins, S. J. (Simon J.); Harvey, N. R. (Neal R.); Szymanski, J. J. (John J.); Brumby, Steven P.

2001-01-01T23:59:59.000Z

246

Extracting Fish and Water Velocity from Doppler Profiler Data  

E-Print Network [OSTI]

Extracting Fish and Water Velocity from Doppler Profiler Data �º Ð 1 ¸ � � �¹ � Ý�¹� � 2 1 to measure fish swimming speeds. This is possible when fish form schools that are large enough so that the multiple Doppler sonar beams are sampling the fish speeds at the same time. In situations where fish

deYoung, Brad

247

Evidence for Complex Molecular Architectures for Solvent-Extracted Lignins  

SciTech Connect (OSTI)

Lignin, an abundant, naturally occurring biopolymer, is often considered 'waste' and used as a simple fuel source in the paper-making process. However, lignin has emerged as a promising renewable resource for engineering materials, such as carbon fibers. Unfortunately, the molecular architecture of lignin (in vivo and extracted) is still elusive, with numerous conflicting reports in the literature, and knowledge of this structure is extremely important, not only for materials technologies, but also for production of biofuels such as cellulosic ethanol due to biomass recalcitrance. As such, the molecular structures of solvent-extracted (sulfur-free) lignins, which have been modified using various acyl chlorides, have been probed using small-angle X-ray (SAXS) and neutron (SANS) scattering in tetrahydrofuran (THF) solution along with hydrodynamic characterization using dilute solution viscometry and gel permeation chromatography (GPC) in THF. Mass spectrometry shows an absolute molecular weight {approx}18-30 kDa ({approx}80-140 monomers), while GPC shows a relative molecular weight {approx}3 kDa. A linear styrene oligomer (2.5 kDa) was also analyzed in THF using SANS. Results clearly show that lignin molecular architectures are somewhat rigid and complex, ranging from nanogels to hyperbranched macromolecules, not linear oligomers or physical assemblies of oligomers, which is consistent with previously proposed delignification (extraction) mechanisms. Future characterization using the methods discussed here can be used to guide extraction processes as well as genetic engineering technologies to convert lignin into value added materials with the potential for high positive impact on global sustainability.

Rials, Timothy G [ORNL; Urban, Volker S [ORNL; Langan, Paul [Los Alamos National Laboratory (LANL)

2012-01-01T23:59:59.000Z

248

Extraction efficiency and quantification of mutagenic chemicals in soils  

E-Print Network [OSTI]

: Dr. K. W. Brown Lack of established extraction procedures for quantification of mutagenic compounds in soil is a major technical limitation to monitoring and assessing the performance of a hazardous waste land treatment facility. In this study... of the disposal site. However, land treatment, an alternative disposal method for the management of hazardous waste, may provide for the destruction of the genotoxic organic waste constituents (Donnelly and Brown, 1981), thereby allowing the land...

Maggard, Lea Ann

2012-06-07T23:59:59.000Z

249

Sustainable heat extraction from abandoned mine tunnels: A numerical model  

Science Journals Connector (OSTI)

Abandoned mines are often associated with enduring liabilities which involve significant costs for decades after the decommissioning of the mine. Using a decommissioned mine as a geothermal resource can offset the environmental costs by supplying green heat to the communities living in and around the mine area. In this paper a numerical assessment of geothermal heat extraction from underground mine workings using an open loop geothermal system is carried out. In this study our focus is on fully flooded mines where the heat flow from the rock mass to the mine cavities is dominantly controlled by conduction in the rock mass. The sustainable heat flux into the mine workings is assessed using a transient two-dimensional axisymmetric heat transfer model. Finite volume method is applied to solve the model and simulate the transient temperature fields in the rock mass and within the water (flowing through cavities). The model is capable of controlling the rate of heat extraction through continuous adjustment of the rate of water flow through the mine. Sustainable rate of heat extraction is calculated for seasonally varied heat loads and for different project life cycles. It is shown that with proper resource management each kilometre of a typical deep underground mine tunnel can produce about 150?kW of usable heat in a sustainable manner. The model is validated by comparing its results with other published models and realistic data available from Springhill mine Nova Scotia Canada. It is found that the sustainable heat extraction is controlled dominantly by virgin rock temperature thermal conductivity of the rock mass and seasonal heat load variations.

S. A. Ghoreishi Madiseh; Mory M. Ghomshei; F. P. Hassani; F. Abbasy

2012-01-01T23:59:59.000Z

250

PMBP extraction and TPE separation in alkaline pyrophosphate solutions  

SciTech Connect (OSTI)

Measurements have been made on the solvent extraction of Am(III), Am(V), Cm(III), and Eu(III) in trace and macroscopic amounts from (NH/sub 4/)/sub 4/P/sub 2/O/sub 7/ (pH = 7.6) and Na/sub 4/P/sub 2/O/sub 7/ (pH = 10) solutions as coordination compounds with 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP). A method has been devised for separating weighable amounts of americium and curium, which is based in trivalent curium being extracted quantitatively from 0.1 M sodium pyrophosphate (pH 10) by 0.1 M PMBP solution in chloroform, where high distribution coefficients apply, while americium is electrochemically oxidized in that medium to Am(VI) and on contact with the extraction agent is reduced to Am(V) and remains in the aqueous phase. The separation factor for the Cm(III)-Am(V) pair is about 10/sup 3/.

Karalova, Z.K.; Bukina, T.I.; Lavrinovich, E.A.; Trofimov, T.I.; Kulyako, Yu.M.; Myasoedov, B.F.

1988-11-01T23:59:59.000Z

251

Sample extraction and injection with a microscale preconcentrator.  

SciTech Connect (OSTI)

This report details the development of a microfabricated preconcentrator that functions as a fully integrated chemical extractor-injector for a microscale gas chromatograph (GC). The device enables parts-per-billion detection and quantitative analysis of volatile organic compounds (VOCs) in indoor air with size and power advantages over macro-scale systems. The 44 mm{sup 3} preconcentrator extracts VOCs using highly adsorptive, granular forms of graphitized carbon black and carbon molecular sieves. The micron-sized silicon cavities have integrated heating and temperature sensing allowing low power, yet rapid heating to thermally desorb the collected VOCs (GC injection). The keys to device construction are a new adsorbent-solvent filling technique and solvent-tolerant wafer-level silicon-gold eutectic bonding technology. The product is the first granular adsorbent preconcentrator integrated at the wafer level. Other advantages include exhaustive VOC extraction and injection peak widths an order of magnitude narrower than predecessor prototypes. A mass transfer model, the first for any microscale preconcentrator, is developed to describe both adsorption and desorption behaviors. The physically intuitive model uses implicit and explicit finite differences to numerically solve the required partial differential equations. The model is applied to the adsorption and desorption of decane at various concentrations to extract Langmuir adsorption isotherm parameters from effluent curve measurements where properties are unknown a priori.

Robinson, Alex Lockwood (Advanced Sensor Technologies, Albuquerque, NM); Chan, Helena Kai Lun

2007-09-01T23:59:59.000Z

252

The effects of diesel oil-based drilling mud extracts on immune responses of rainbow trout  

Science Journals Connector (OSTI)

The potential suppressive effect of oil-pollution in the aquatic environment on fish...Oncorhynchus mykiss) with an extract obtained from diesel oil-based drilling mud. To investigate the effect of extract ... 4 ...

A. Tahir; C. J. Secombes

1995-07-01T23:59:59.000Z

253

Comparative Analysis of Extractive Methods of Porphyrin Separation from Heavy Oil Asphatenes  

Science Journals Connector (OSTI)

A comparative analysis has been made of the methods of porphyrin extraction from high-vanadium heavy oil asphaltenes using polar solvents and sulfuric acid. Chromatographic separation of the extracts, followed...

D. V. Milordov; G. Sh. Usmanova…

2013-07-01T23:59:59.000Z

254

Finite-State Transducer Cascade to Extract Proper Names in Texts  

Science Journals Connector (OSTI)

This article describes a finite-state cascade for the extraction of person names in texts in French. We extract these proper names in order to categorize and to cluster texts with them. After a finite-state pr...

Nathalie Friburger; 1]Denis Maurel

2002-01-01T23:59:59.000Z

255

The determination of glucose in sonophoretically extracted interstitial fluid and the characterization of ultrasound parameters  

E-Print Network [OSTI]

chamber and used to correlate ultrasound spectral properties to the amount of fluid extracted. Results indicate that the highest amount of water extracted occurs when the acoustic coupling media on the surface of the skin is cavitating, resulting in mild...

Cantrell, Jeffrey Travis

2012-06-07T23:59:59.000Z

256

Rapid extraction of dissolved inorganic carbon from seawater and groundwater samples for radiocarbon dating  

E-Print Network [OSTI]

The focus of this thesis is the design and development of a system for rapid extraction of dissolved inorganic carbon from seawater and groundwater samples for radiocarbon dating. The Rapid Extraction of Dissolved Inorganic ...

Gospodinova, Kalina Doneva

2012-01-01T23:59:59.000Z

257

Extraction and Functional Properties of Non-Zein Proteins in Corn Germ from Wet-Milling  

Science Journals Connector (OSTI)

This study was conducted to evaluate the extractability of wet-milled corn germ protein, characterize the recovered protein and ... potential applications. Protein was extracted from both wet germ and finished (d...

Mila P. Hojilla-Evangelista

2012-01-01T23:59:59.000Z

258

Production of low ash coal by thermal extraction with N-methyl-2-pyrrolidinone  

Science Journals Connector (OSTI)

Present study was conducted for the purpose of producing low ash coal from LRC (low rank coals) such as lignite and sub-bituminous coal through thermal extraction using polar solvent. Extraction from bituminous coal

Sang Do Kim; Kwang Jae Woo; Soon Kwan Jeong…

2008-07-01T23:59:59.000Z

259

Extraction of Contextual Knowledge and Ambiguity Handling for Ontology in Virtual Environment  

E-Print Network [OSTI]

This dissertation investigates the extraction of knowledge from a known environment. Virtual ontology – the extracted knowledge – is defined as a structure of a virtual environment with semantics. While many existing 3D reconstruction approaches can...

Lee, Hyun Soo

2011-10-21T23:59:59.000Z

260

High-Speed Extraction Model of Interest Region in the Parcel Image of Large Size  

Science Journals Connector (OSTI)

This paper deals with a model for the high-speed extraction of ROI (Region Of Interest) during the process of logistics transported on conveyor belt. The objective of this paper is to extract various ROIs from...

Moon-sung Park; Il-sook Kim; Eun-kyung Cho…

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

UTILITY OF EXTRACTING CY PARTICLE ENERGY BY WAVES N.J. FISCH, M.C. HERRMANN  

E-Print Network [OSTI]

UTILITY OF EXTRACTING CY PARTICLE ENERGY BY WAVES N.J. FISCH, M.C. HERRMANN Princeton Plasma. The utility of extracting CY particle power, and then diverting this power to fast fuel ions, is investigated

262

Treatment of Nuclear Waste Solutions Using a New Class of Extractants: Pentaalkyl Propane Diamides  

Science Journals Connector (OSTI)

A new class of bifunctional extractants pentaalkyl propane diamides is studied in order to extract trivalent cations (Am3+, Cm3+…) and other actinides contained in waste solutions of nuclear industry. These solve...

C. Cuillerdier; C. Musikas; P. Hoel

1991-01-01T23:59:59.000Z

263

Time-Dependent Implementation of Argonne’s Model for Universal Solvent Extraction  

Science Journals Connector (OSTI)

Time-Dependent Implementation of Argonne’s Model for Universal Solvent Extraction ... Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States ... Argonne’s Model for Universal Solvent Extraction (AMUSE) simulates multistage counter-current solvent extraction processes for species of interest to spent nuclear fuel reprocessing; it is a model of a liquid–liquid extraction unit operation. ...

Kurt Frey; John F. Krebs; Candido Pereira

2012-09-04T23:59:59.000Z

264

Preliminaries toward studying resonant extraction from the Debuncher  

SciTech Connect (OSTI)

A recent proposal to detect {mu} {yields} e direct conversion at Fermilab asks for slow extraction of protons from the antiproton source, specifically from the Debuncher. [1] A third-integer resonance originally was considered for this, partly because of the Debuncher's three-fold symmetry and partly because its operational horizontal tune, {nu}{sub x} {approx} 9.765, is already within 0.1 of {nu}{sub x} = 29/3. Using a half integer resonance, {nu}{sub x} = 19/2, though not part of the original proposal, has been suggested more recently because (a) Fermilab has had a good deal of experience with half-integer extraction from the Tevatron, the Main Injector and the erstwhile Main Ring, and (b) for reasons we shall examine later, it depopulates the entire bunch without an abort at the end. This memo presents considerations preliminary to studying both possibilities. It is meant only as a starting point for investigations to be carried out in the future. The working constraints and assumptions have oscillated between two extremes: (1) making minimal changes in the antiproton source to minimize cost and (2) building another machine in the same tunnel. In this memo we adopt an attitude aligned more toward the first. The assumed parameters are listed in Table 1. A few are not (easily) subject to change, such as those related to the beam's momentum and revolution frequency and the acceptance of the debuncher. Two resonance exemplars are presented in the next section, with an explanation of the analytic and semi-analytic calculations that can be done for each. Section 3 contains preliminary numerical work that was done to validate the exemplars within the context of extraction from the Debuncher. A final section contains a summary. Following the bibliography, appendices contain (a) a qualitative, conceptual discussion of extraction for the novice, (b) a telegraphic review of the perturbative incantations used to filter the exemplars as principal resonances of quadrupole, sextupole and octupole distributions, (c) a brief discussion of linearly independent control circuits, and (d) two files describing the antiproton source's rings in MAD v.8 format, not readily available elsewhere. All figures are located at the end. We emphasize again, the work reported here barely begins the effort that will be required to design, validate and perform resonant extraction from the Debuncher. Our goal was to compile these preliminary notes in one place for easy future reference, preferably by a young, intelligent, motivated and energetic graduate student.

Michelotti, Leo; Johnstone, John; /Fermilab

2009-06-01T23:59:59.000Z

265

Subcritical water extraction of lipids from wet algae for biodiesel production  

Science Journals Connector (OSTI)

Abstract An energy efficient extraction of algal lipids from wet algal biomass was performed at subcritical conditions of water. This was achieved using microwave assisted heating as well as conventional heating. The conventional heating subcritical water (C-SCW) extraction and microwave assisted subcritical water (MW-SCW) experiments were designed and conducted to study the effects of extraction temperature, time, and biomass loading on lipid extraction. The Response surface methodology was used to optimize the parameters for maximum extraction of lipids. The influence of extraction temperature is more when compared to other experimental parameters in both processes. The maximum extraction efficiencies were achieved at 220 °C using conventional heating and 205 °C using microwave heating. Complete extraction of lipids was observed with microwave assisted heating and 70% extraction efficiency was achieved using conventional heating. The energy required for extraction is greatly reduced (2–8 folds) when compared to the conventional solvent extraction. The potential by-products like protein rich residual algae, omega-3 fatty acids, and sugars in residual water phase were identified. The biomass and the crude extracts were characterized using GC–MS, Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), and thermogravimetric analysis (TGA).

Harvind K. Reddy; Tapaswy Muppaneni; Yingqiang Sun; Yin Li; Sundaravadivelnathan Ponnusamy; Prafulla D. Patil; Peter Dailey; Tanner Schaub; F. Omar Holguin; Barry Dungan; Peter Cooke; Peter Lammers; Wayne Voorhies; Xiuyang Lu; Shuguang Deng

2014-01-01T23:59:59.000Z

266

Original article Optimisation of pectin acid extraction from passion fruit peel  

E-Print Network [OSTI]

Original article Optimisation of pectin acid extraction from passion fruit peel (Passiflora edulis; Accepted in revised form 1 April 2008) Summary Pectin was extracted from passion fruit peel using three Central composite design, extraction yield, passion fruit, pectin, response surface methodology

Ferreira, Márcia M. C.

267

Sample-based collection and adjustment algorithm for metadata extraction parameter of flexible format document  

Science Journals Connector (OSTI)

We propose an algorithm for automatically generating metadata extraction parameters. It first enumerates candidates on the basis of metadata occurrence in training documents, and then examines these candidates to avoid side effects and to maximize effectiveness. ... Keywords: keyword extraction, layout characteristics, logical structure analysis, metadata extraction

Toshiko Matsumoto; Mitsuharu Oba; Takashi Onoyama

2010-06-01T23:59:59.000Z

268

Multi-document Summarization via Information Extraction Michael White and Tanya Korelsky  

E-Print Network [OSTI]

the initial version of RIPTIDES, a system that combines information extraction (IE), extraction describe the initial implementation and evaluation of the RIPTIDES IE- supported summarization system. We to be reported in the summary. RIPTIDES next applies its Information Extraction subsystem to generate a database

Pierce, David R.

269

The Effects of Energy Prices on Groundwater Extraction in Agriculture in the High Plains Aquifer*  

E-Print Network [OSTI]

in the High Plains Aquifer. Dumler et al. (2009) estimate that the energy cost of extracting irrigation water1 The Effects of Energy Prices on Groundwater Extraction in Agriculture in the High Plains-752-0824 Abstract In this article we examine the effects of energy prices on groundwater extraction using

Lin, C.-Y. Cynthia

270

Extraction of Vibration Components from a Rotating Propeller Model Based on Complex Empirical Mode Decomposition  

E-Print Network [OSTI]

Extraction of Vibration Components from a Rotating Propeller Model Based on Complex Empirical Mode dydynoel@kaist.ac.kr Abstract -- In this paper, we present extraction of vibration components embedded decomposition (CEMD), an extended version of EMD, is employed to extract the vibration components. With FEKO

Myung, Noh-Hoon

271

Fetal ECG Extraction by Extended State Kalman Filtering Based on Single-Channel Recordings  

E-Print Network [OSTI]

1 Fetal ECG Extraction by Extended State Kalman Filtering Based on Single-Channel Recordings M Bayesian filtering framework for extracting ECGs from a single- channel as encountered in the fetal ECG extraction from abdom- inal sensor. The recorded signals are modeled as the summation of several ECGs. Each

Paris-Sud XI, Université de

272

Probe, Cluster, and Discover: Focused Extraction of QA-Pagelets from the Deep Web  

E-Print Network [OSTI]

Probe, Cluster, and Discover: Focused Extraction of QA-Pagelets from the Deep Web James Caverlee mining system for discovering and extracting QA- Pagelets from the Deep Web. A unique feature of THOR is its two-phase extraction framework. In the first phase, pages from a deep web site are grouped

Liu, Ling

273

Comparison of Extraction Methods for Marker Compounds in the Essential Oil of Lemon Grass by GC  

Science Journals Connector (OSTI)

Four procedures for the extraction of essential oils from C. citratus were compared including solvent extraction, steam distillation extraction, accelerated solvent extraction, and supercritical fluid extraction. ... The essential oil of lemon grass has also been used to treat a wide variety of health conditions such as acne, athlete's foot, excessive perspiration, flatulence, muscle aches, oily skin, and scabies (2). ... Upon completion of the sonication, the emulsion was centrifuged for 8 min at 3000 rpm in a Marathon 21K/Br centrifuge (Fisher Scientific, Fair Lawn, NJ) and the supernatant was then decanted into a flask. ...

Brian T. Schaneberg; Ikhlas A. Khan

2002-02-02T23:59:59.000Z

274

Modal parameter extraction from large operating structures using ambient excitation  

SciTech Connect (OSTI)

A technique called the Natural Excitation Technique or has been developed to response extract response parameters from large operational structure when subjected to random and unmeasured forces such as wind, road noise, aerodynamics, or waves. Six applications of NExT to ambient excitation testing and NExT analysis are surveyed in this paper with a minimum of technical detail. In the first application, NExT was applied to a controlled-yaw Horizontal-Axis Wind Turbine (HAWT). By controlling the yaw degree of freedom an important class of rotating coordinate system effects are reduced. A new shape extraction procedure was applied to this data set with good results. The second application was to a free-yaw HAWT. The complexity of the response has prompted further analytical studies and the development of a specialized visualization package. The third application of NExT was to a parked three-bladed Vertical-Axis Wind Turbine (VAWT) in which traditional modal testing could not excite all modes of interest. The shape extraction process used cross-correlation functions directly in a time-domain shape-fitting routine. The fourth application was to ground transportation systems. Ongoing work to improve driver and passenger comfort in tractor-trailer vehicles and to refine automobile body and tire models will use NExT. NExT has been used to process ambient vibration data for Finite Element Model correlation and is being used to study Structural Health Monitoring with ambient excitation. Shape fitting was performed using amplitude and phase information taken directly from the cross-spectra. The final application is to an offshore structure. This work is on-going, however initial studies have found a high-modal density, high noise content, and sparse data set.

James, G.H. III; Carne, T.G.; Mayes, R.L.

1995-12-31T23:59:59.000Z

275

Biodiesel from mixed culture algae via a wet lipid extraction procedure  

Science Journals Connector (OSTI)

Microalgae are a source of renewable oil for liquid fuels. However, costs for dewatering/drying, extraction, and processing have limited commercial scale production of biodiesel from algal biomass. A wet lipid extraction procedure was developed that was capable of extracting 79% of transesterifiable lipids from wet algal biomass (84% moisture) via acid and base hydrolysis (90 °C and ambient pressures), and 76% of those extracted lipids were isolated, by further processing, and converted to FAMEs. Furthermore, the procedure was capable of removing chlorophyll contamination of the algal lipid extract through precipitation. In addition, the procedure generated side streams that serve as feedstocks for microbial conversion to additional bioproducts. The capability of the procedure to extract lipids from wet algal biomass, to reduce/remove chlorophyll contamination, to potentially reduce organic solvent demand, and to generate feedstocks for high-value bioproducts presents opportunities to reduce costs of scaling up algal lipid extraction for biodiesel production.

Ashik Sathish; Ronald C. Sims

2012-01-01T23:59:59.000Z

276

Organic Light Emitting Diodes: materials, device structures and light extraction  

Science Journals Connector (OSTI)

Organic Light Emitting Devices (OLEDs) are presented with particular emphasis on materials, device structures and strategies to improve light extraction. For the fabrication of efficient OLEDs, two types of electroluminescent materials are used (small molecules and polymers) with efficiencies and lifetimes which are now acceptable for small size or low content information displays. Two main approaches are described to enhance external efficiency, one is based on direct modification of the species emission and the other on modification of emitted guided modes propagation within the device. The features of the different approaches are evidenced through examples of devices reported in the literature.

B. Geffroy; L. Rocha

2009-01-01T23:59:59.000Z

277

Two concurrent architectures for eigenvalue extraction utilizing the QR algorithm  

E-Print Network [OSTI]

. Upper Hessenberg Transformer B. Double Shift QR Architecture C. Expansion to Larger Order Systems Page v11 ix 2I 21 3A 37 A7 55 55 59 67 vn D . Ei genvector Extraction CHAPTER V. SIMULATION RESULTS A. Simulation Description B. Results... Figure 4. Wi1kinson's method for choosing the shift of origin, k. I Figure 5. Consecutive row based planar rotation Figure 6. Diagonal based planar rotation 23 23 Fi gure 7. Exampl e of a 6 x 6 case of the tr I angul ar processing array utilizing...

McDaniel, Guy David

2012-06-07T23:59:59.000Z

278

PRODUCTION OF CARBON PRODUCTS USING A COAL EXTRACTION PROCESS  

SciTech Connect (OSTI)

The purpose of this DOE-funded effort is to develop technologies for carbon products from coal-derived feedstocks. Carbon products can include precursor materials such as solvent extracted carbon ore (SECO) and synthetic pitch (Synpitch). In addition, derived products include carbon composites, fibers, foams and others. Key milestones included producing hydrogenated coal in the Hydrotreating Facility for the first time. The facility is now operational, although digital controls have not yet been completely wired. In addition, ultrasound is being used to investigate enhanced dissolution of coal. Experiments have been carried out.

Dady Dadyburjor; Chong Chen; Elliot B. Kennel; Liviu Magean; Peter G. Stansberry; Alfred H. Stiller; John W. Zondlo

2006-02-23T23:59:59.000Z

279

New geothermal heat extraction process to deliver clean power generation  

ScienceCinema (OSTI)

A new method for capturing significantly more heat from low-temperature geothermal resources holds promise for generating virtually pollution-free electrical energy. Scientists at the Department of Energys Pacific Northwest National Laboratory will determine if their innovative approach can safely and economically extract and convert heat from vast untapped geothermal resources. The goal is to enable power generation from low-temperature geothermal resources at an economical cost. In addition to being a clean energy source without any greenhouse gas emissions, geothermal is also a steady and dependable source of power.

Pete McGrail

2012-12-31T23:59:59.000Z

280

Solvent–Coal–Mineral Interaction during Solvent Extraction of Coal  

Science Journals Connector (OSTI)

The solvent extraction of Poplar lignite coal was studied with three model solvents (tetralin, quinoline, and 1-naphtol) and one industrial coal liquid derived solvent. ... Thanks to its wide distribution and large reserves, coal is a feasible local substitute feed material for conventional crude oil in many countries. ... Physical dissolution dominates at lower temperature, around 200 °C and lower temperatures for lignites; the role of the solvent is to relax the coal matrix and drag soluble molecules from the coal into the bulk solvent phase. ...

Mariangel Rivolta Hernández; Carolina Figueroa Murcia; Rajender Gupta; Arno de Klerk

2012-10-26T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Alkaline-Side Extraction of Cesium from Savannah River Tank Waste Using a Calixarene-Crown Ether Extractant  

SciTech Connect (OSTI)

Results are presented supporting the viability of the alkaline-side CSEX process as a potential replacement for the In-Tank Precipitation process for removal of cesium from aqueous high-level waste (HLW) at the Savannah River Site (SRS). Under funding from the USDOE Efficient Separations and Crosscutting program, a flowsheet was suggested in early June of 1998, and in the following four months, this flowsheet underwent extensive testing, both in batch tests at ORNL and ANL and in two centrifugal-contactor tests at ANL. To carry out these tests, the initial ESP funding was augmented by direct funds from Westinghouse Savannah River Corporation. The flowsheet employed a solvent containing a calixarene-crown hybrid compound called BoBCalixC6 that was invented at ORNL and can now be obtained commercially for government use from IBC Advanced Technologies. This special extractant is so powerful and selective that it can be used at only 0.01 M, compensating for its expense, but a modifier is required for use in an aliphatic diluent, primarily to increase the cesium distribution ratio D{sub Cs} in extraction. The modifier selected is a relatively economical fluorinated alcohol called Cs3, invented at ORNL and so far available. only from ORNL. For the flowsheet, the modifier is used at 0.2 M in the branched aliphatic kerosene Isopar{reg_sign} L. Testing at ORNL and ANL involved simulants of the SRS HLW. After extraction of the Cs from the waste simulant, the solvent is scrubbed with 0.05 M HNO{sub 3} and stripped with a solution comprised of 0.0005 M HNO{sub 3} and 0.0001 M CsNO{sub 3}. The selection of these conditions is justified in this report, both on the basis of experimental data and underlying theory.

Bonnesen, P.V.; Delmau, L.H.; Haverlock, T.J.; Moyer, B.A.

1998-12-01T23:59:59.000Z

282

Soil Vapor Extraction System Optimization, Transition, and Closure Guidance  

SciTech Connect (OSTI)

Soil vapor extraction (SVE) is a prevalent remediation approach for volatile contaminants in the vadose zone. A diminishing rate of contaminant extraction over time is typically observed due to 1) diminishing contaminant mass, and/or 2) slow rates of removal for contamination in low-permeability zones. After a SVE system begins to show indications of diminishing contaminant removal rate, SVE performance needs to be evaluated to determine whether the system should be optimized, terminated, or transitioned to another technology to replace or augment SVE. This guidance specifically addresses the elements of this type of performance assessment. While not specifically presented, the approach and analyses in this guidance could also be applied at the onset of remediation selection for a site as a way to evaluate current or future impacts to groundwater from vadose zone contamination. The guidance presented here builds from existing guidance for SVE design, operation, optimization, and closure from the U.S. Environmental Protection Agency, U.S. Army Corps of Engineers, and the Air Force Center for Engineering and the Environment. The purpose of the material herein is to clarify and focus on the specific actions and decisions related to SVE optimization, transition, and/or closure.

Truex, Michael J.; Becker, Dave; Simon, Michelle A.; Oostrom, Martinus; Rice, Amy K.; Johnson, Christian D.

2013-02-08T23:59:59.000Z

283

PRODUCTION OF CARBON PRODUCTS USING A COAL EXTRACTION PROCESS  

SciTech Connect (OSTI)

High melting temperature synthetic pitches (Synpitches) were created using coal derivatives produced from a solvent extraction technique. Solvent extraction is used to separate hydrocarbons from mineral matter as well as other insolubles. Mild hydrogenation can be used to chemically modify resultant material to produce a true pitch. There are three main techniques which can be used to tailor the softening point of the Synpitch. First, the softening point can be controlled by varying the conditions of hydrogenation, chiefly the temperature, pressure and residence time in a hydrogen overpressure. Second, by selectively distilling light hydrocarbons, the softening point of the remaining pitch can be raised. Third, the Synpitch can be blended with another mutually soluble pitch or hydrocarbon liquid. Through such techniques, spinnable isotropic Synpitches have been created from coal feedstocks. Characteristics of Synpitches include high cross-linking reactivity and high molecular weight, resulting in carbon fibers with excellent mechanical properties. To date, mechanical properties have been achieved which are comparable to the state of the art achievable with conventional coal tar pitch or petroleum pitch.

Dady Dadyburjor; Chong Chen; Elliot B. Kennel; Liviu Magean; Peter G. Stansberry; Alfred H. Stiller; John W. Zondlo

2005-12-12T23:59:59.000Z

284

Solvent extraction of oil shale or tar sands  

SciTech Connect (OSTI)

Oil shales or tar sands are extracted under non-thermally destructive conditions with a solvent liquid containing a compound having the general formula: R(N)-M(=O)(-R1)-N(-R2)-R3 where M is a carbon, sulfur or phosphorus atom, R/sup 2/ and R/sup 3/ are each a hydrogen atom or a lowe alkyl group, R and R/sup 1/ are each a lower alkyl group, another -N(-R2)-R3 group, a monocyclic arom group, or R/sup 1/ can be another -N(-R3)-M(=O)(-R1)-R(N) group or R/sup 1/ and R/sup 2/ together can represent the atoms necessary to close a heterocyclic ring, and n=1 where M=phosphorus and is otherwise 0, to substantially remove the non-fixed carbon content of the oil shale or tar sands, leaving a solid residue of fixed carbon, ash minerals, and non-extractable matter.

Stiller, A.H.; Hammack, R.W.; Sears, J.T.

1983-08-02T23:59:59.000Z

285

Evolution of 3D Boson Stars with Waveform Extraction  

E-Print Network [OSTI]

Numerical results from a study of boson stars under nonspherical perturbations using a fully general relativistic 3D code are presented together with the analysis of emitted gravitational radiation. We have constructed a simulation code suitable for the study of scalar fields in space-times of general symmetry by bringing together components for addressing the initial value problem, the full evolution system and the detection and analysis of gravitational waves. Within a series of numerical simulations, we explicitly extract the Zerilli and Newman-Penrose scalar $\\Psi_4$ gravitational waveforms when the stars are subjected to different types of perturbations. Boson star systems have rapidly decaying nonradial quasinormal modes and thus the complete gravitational waveform could be extracted for all configurations studied. The gravitational waves emitted from stable, critical, and unstable boson star configurations are analyzed and the numerically observed quasinormal mode frequencies are compared with known linear perturbation results. The superposition of the high frequency nonspherical modes on the lower frequency spherical modes was observed in the metric oscillations when perturbations with radial and nonradial components were applied. The collapse of unstable boson stars to black holes was simulated. The apparent horizons were observed to be slightly nonspherical when initially detected and became spherical as the system evolved. The application of nonradial perturbations proportional to spherical harmonics is observed not to affect the collapse time. An unstable star subjected to a large perturbation was observed to migrate to a stable configuration.

Jayashree Balakrishna; Ruxandra Bondarescu; Gregory Daues; F. Siddhartha Guzman; Edward Seidel

2006-02-20T23:59:59.000Z

286

Heat extraction in fractured hydrothermal reservoirs: Final report  

SciTech Connect (OSTI)

The main objective of the Heat Extraction Project has been the development of means to estimate the thermal behavior of geothermal fluids from fractured hydrothermal resources based on production of mixed reservoir fluids from heat sweep by reinjected brine and resource fluid cooled by drawdown and infiltrating waters. Several reports and publications, listed in the concluding section of this report, resulted from the application of the SGP heat sweep model to achieve this objective. The Heat Extraction Project made major advances in the development of the 1-D Heat Sweep Model and its application in geothermal fields in several countries. Heat sweep joint studies are underway for reinjection evaluation at the Los Azufres, Los Humeros, and La Primavera fields in Mexico, for the 500 t/h reinjection test for the redevelopment program at Wairakei, New Zealand, for two hot water supply recirculation systems to be developed in the USSR, and for the phase 2 test at the Hot Dry Rock project at Fenton Hill, New Mexico. Advances were also made in the cooperative studies with CFE at Los Azufres on the evaluation of the effects of early operation of small wellhead generators on the reservoirs of potentially large geothermal fields. 9 refs., 5 figs.

Kruger, P.

1988-06-30T23:59:59.000Z

287

Solvent Extraction of Chemical Attribution Signature Compounds from Painted Wall Board: Final Report  

SciTech Connect (OSTI)

This report summarizes work that developed a robust solvent extraction procedure for recovery of chemical attribution signature (CAS) compound dimethyl methyl phosphonate (DMMP) (as well as diethyl methyl phosphonate (DEMP), diethyl methyl phosphonothioate (DEMPT), and diisopropyl methyl phosphonate (DIMP)) from painted wall board (PWB), which was selected previously as the exposed media by the chemical attribution scientific working group (CASWG). An accelerated solvent extraction approach was examined to determine the most effective method of extraction from PWB. Three different solvent systems were examined, which varied in solvent strength and polarity (i.e., 1:1 dichloromethane : acetone,100% methanol, and 1% isopropanol in pentane) with a 1:1 methylene chloride : acetone mixture having the most robust and consistent extraction for four original target organophosphorus compounds. The optimum extraction solvent was determined based on the extraction efficiency of the target analytes from spiked painted wallboard as determined by gas chromatography x gas chromatography mass spectrometry (GCxGC-MS) analysis of the extract. An average extraction efficiency of approximately 60% was obtained for these four compounds. The extraction approach was further demonstrated by extracting and detecting the chemical impurities present in neat DMMP that was vapor-deposited onto painted wallboard tickets.

Wahl, Jon H.; Colburn, Heather A.

2009-10-29T23:59:59.000Z

288

Extraction of lanthanides from acidic solution using tributyl phosphate modified supercritical carbon dioxide  

SciTech Connect (OSTI)

The feasibility of using supercritical carbon dioxide as a substitute extraction solvent in nuclear reprocessing was tested by the extraction of lanthanide ions from acidic solution. Lanthanides were extracted from 6 M HNO[sub 3]-3 M LiNO[sub 3] solutions using tributyl phosphate- (TBP-) modified CO[sub 2]. Synergistic effects were also investigated using a combination of thenoyltrifluoroacetone (TTA) and TBP-modified CO[sub 2] as the extractant. It was found that near-quantitative extraction of Sm[sup 3+], Eu[sup 3+], Gd[sup 3+], and Dy[sup 3+] was achieved while the extraction efficiencies for La[sup 3+], Ce[sup 3+], Yb[sup 3+], and Lu[sup 3+] were much lower. The light lanthanides extracted as Ln(NO[sub 3])[sub 3][center dot]3TBP and the heavy lanthanides extracted as Ln(NO[sub 3])[sub 3][center dot]2TBP when TBP-modified CO[sub 2] was used as the extractant, while Ln(TTA)[sub 3][center dot] 3TBP and Ln(TTA)[sub 3][center dot]2TBP adducts were extracted when TTA was added to TBP-modified CO[sub 2]. 17 refs., 1 fig., 3 tabs.

Laintz, K.E.; Tachikawa, E. (Japan Atomic Energy Research Inst., Ibaraki-Ken (Japan))

1994-07-01T23:59:59.000Z

289

Neptunium - Uranium - Plutonium Co-Extraction in TBP-based Solvent Extraction Processes for Spent Nuclear Fuel Recycling  

SciTech Connect (OSTI)

The US, through the Global Nuclear Energy Partnership, is currently engaged in efforts aimed at closing the nuclear fuel cycle. Neptunium behavior is important to understand for transuranic recycling because of its complex oxidation chemistry. The Pacific Northwest National Laboratory is investigating neptunium oxidation chemistry in the context of the PUREX process. Neptunium extraction in the PUREX process relies on maintaining either IV or V oxidation states. Qualitative conversion of neptunium(V) to neptunium(VI) was achieved within 5 hours in 6 M nitric acid at 95 deg. C. However, the VI state was not maintained during a batch contact test simulating the PUREX process and neptunium reduced to the V state, rendering it inextractable. Vanadium(V) was found to be effective in maintaining neptunium(VI) by adding it to a simulated irradiated nuclear fuel feed in 6 M nitric acid and to the scrub acid in the batch contact simulation of the PUREX process. Computer simulations of the PUREX process with a typical irradiated nuclear fuel in 6 M nitric acid as feed indicated little impact of the higher acid concentration on the behavior of fission products of moderate extractability. We plan to perform countercurrent tests of this modified PUREX process in the near future. (authors)

Arm, S.T.; Abrefah, J.; Lumetta, G.J.; Sinkov, S.I. [Battelle PNWD, Pacific Northwest National Laboratory, 902 Battelle Boulevard, PO Box 999, Richland, Washington, 99352 (United States)

2007-07-01T23:59:59.000Z

290

Some chemical and mutagenic properties of water-extractable N-nitroso compound precursors (NOCP) in snuff  

Science Journals Connector (OSTI)

...dichloromethane (DCM) extraction of a water extract of snuff at pH 11 (this...nornicotine in a trial test), final water and DCM solutions contained 51...original extract. In a preliminary purification, a water extract of45 g Timber Wolf snuff...

Lin Zhou and Sidney S. Mirvish

2004-04-01T23:59:59.000Z

291

Anion effects in the extraction of lanthanide 2-thenoyltrifluoroacetone complexes into an ionic liquid  

SciTech Connect (OSTI)

The extraction of trivalent lanthanides from an aqueous phase containing 1 M NaClO{sub 4} into the room temperature ionic liquid 1-butyl-3-methylimidazolium nonafluoro-1-butane sulfonate by the beta-diketone extractant 2-thenoyltrifluoroacetone (Htta) was studied. Radiotracer distribution, absorption spectroscopy, time-resolved laser-induced fluorescence spectroscopy, and X-ray absorption fine structure measurements point to the extraction of multiple lanthanide species. At low extractant concentrations, fully hydrated aqua cations of the lanthanides are present in the ionic liquid phase. As the extractant concentration is increased 1:2 and 1:3 lanthanide:tta species are observed. In contrast, 1:4 Ln:tta complexes were observed in the extraction of lanthanides by Htta into 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide. (authors)

Jensen, Mark P.; Beitz, James V.; Rickert, Paul G. [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Borkowski, Marian [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Los Alamos Natl Lab, Earth and Environm Sci Div, Carlsbad, NM, (United States); Laszak, Ivan [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Commisariat Energie Atom, DEN DPC SERC LANIE, Gif Sur Yvette, (France); Dietz, Mark L. [Argonne Natl Lab, Chem Sci and Engn Div, Argonne, IL 60439 (United States); Wisconsin-Milwaukee Univ, Department of Chemistry and Biochemistry, Milwaukee, WI, (United States)

2012-07-01T23:59:59.000Z

292

EIS-0271: Construction and Operation of a Tritium Extraction Facility at  

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

EIS-0271: Construction and Operation of a Tritium Extraction EIS-0271: Construction and Operation of a Tritium Extraction Facility at the Savannah Siver Site EIS-0271: Construction and Operation of a Tritium Extraction Facility at the Savannah Siver Site SUMMARY DOE proposes to construct and operate a Tritium Extraction Facility (TEF) at H Area on the Savannah River Site (SRS) to provide the capability to extract tritium from commercial light water reactor (CLWR) targets and from targets of similar design. The proposed action is also DOE's preferred alternative. An action alternative is to construct and operate TEF at the Allied General Nuclear Services facility, which is adjacent to the eastern side of the SRS. Under the no-action alternative DOE could incorporate tritium extraction capabilities in the accelerator for production of

293

Aggregation of dialkyl-substituted diphosphonic acids and its effect on metal ion extraction.  

SciTech Connect (OSTI)

Solvent extraction reagents containing the diphosphonic acid group exhibit an extraordinary affinity for tri-, tetra- and hexavalent actinides. Their use has been considered for actinide separation and pre-concentration procedures. Solvent extraction data obtained with P,P{prime}-di(2-ethylhexyl) methane-, ethane- and butanediphosphonic acids exhibit features that are difficult to explain without Knowledge of the aggregation state of the extractants. Information about the aggregation of the dialkyl-substituted diphosphonic acids in aromatic diluents has been obtained using the complementary techniques of vapor pressure osmometry (VPO), small angle neutron scattering (SANS), infrared spectroscopy and molecular mechanics. The results from these techniques provide an understanding of the aggregation behavior of these extractants that is fully compatible with the solvent extraction data. The most important results and their relevance to solvent extraction are reviewed in this paper.

Chiarizia, R.; Barrans, R. E., Jr.; Ferraro, J. R. Herlinger, A. W.; McAlister, D. R.

1999-10-22T23:59:59.000Z

294

Extraction, separation, and analysis of high sulfur coal  

SciTech Connect (OSTI)

The work completed this past quarter has centered around the further study and characterization of the selective desulfurization of coal through the oxidative interaction of aqueous copper chloride. The reaction of the CuCl{sub 2} with the particular model compounds is conducted at a series of reaction times and reaction temperatures. The reaction times studied were 1, 3, 6, 12, and 24 hours. The reaction temperatures studied were 50, 130, 210, and 295{degree}C. After the reaction, the organic compounds were extracted with methylene chloride. These products were then analyzed via GC/IRD/MS and SFC/SCD (sulfur chemiluminescence detector). Model Coal Compounds reacted include: tetrahydrothiophene, methyl p-tolyl sulfide, cyclohexyl mercaptan, and thiophenol. At 130{degree}C, in addition to these compounds reacting, reactions were also detected for phenyl sulfide and benzo(b)thiophene. 14 figs.

Olesik, S. (comp.)

1990-01-01T23:59:59.000Z

295

Work extraction and thermodynamics for individual quantum systems  

E-Print Network [OSTI]

Thermodynamics is traditionally concerned with systems comprised of a large number of particles. Here we present a framework for extending thermodynamics to individual quantum systems, including explicitly a thermal bath and work-storage device (essentially a `weight' that can be raised or lowered). We prove that the second law of thermodynamics holds in our framework, and give a simple protocol to extract the optimal amount of work from the system, equal to its change in free energy. Our results apply to any quantum system in an arbitrary initial state, in particular including non-equilibrium situations. The optimal protocol is essentially reversible, similar to classical Carnot cycles, and indeed, we show that it can be used it to construct a quantum Carnot engine.

Paul Skrzypczyk; Anthony J. Short; Sandu Popescu

2014-09-26T23:59:59.000Z

296

In-Situ Containment and Extraction of Volatile Soil Contaminants  

DOE Patents [OSTI]

The invention relates to a novel approach to containing and removing toxic waste from a subsurface environment. More specifically the present invention relates to a system for containing and removing volatile toxic chemicals from a subsurface environment using differences in surface and subsurface pressures. The present embodiment generally comprises a deep well, a horizontal tube, at least one injection well, at least one extraction well and a means for containing the waste within the waste zone (in-situ barrier). During operation the deep well air at the bottom of well (which is at a high pressure relative to the land surface as well as relative to the air in the contaminated soil) flows upward through the deep well (or deep well tube). This stream of deep well air is directed into the horizontal tube, down through the injection tube(s) (injection well(s)) and into the contaminate plume where it enhances volatization and/or removal of the contaminants.

Varvel, Mark Darrell

2005-12-27T23:59:59.000Z

297

Fluorescent Functionalized Mesoporous Silica for Radioactive Material Extraction  

SciTech Connect (OSTI)

Mesoporous silica with covalently bound salicylic acid molecules incorporated in the structure was synthesized with a one-pot, co-condensation reaction at room temperature. The as-synthesized material has a large surface area, uniform particle size, and an ordered pore structure as determined by characterization with transmission electron microscopy, thermal gravimetric analysis, and infrared spectra, etc. Using the strong fluorescence and metal coordination capability of salicylic acid, functionalized mesoporous silica (FMS) was developed to track and extract radionuclide contaminants, such as uranyl [U(VI)] ions encountered in subsurface environments. Adsorption measurements showed a strong affinity of the FMS toward U(VI) with a Kd value of 105 mL/g, which is four orders of magnitude higher than the adsorption of U(VI) onto most of the sediments in natural environments. The new materials have a potential for synergistic environmental monitoring and remediation of the radionuclide U(VI) from contaminated subsurface environments.

Li, Juan; Zhu, Kake; Shang, Jianying; Wang, Donghai; Nie, Zimin; Guo, Ruisong; Liu, Chongxuan; Wang, Zheming; Li, Xiaolin; Liu, Jun

2012-08-01T23:59:59.000Z

298

Haze Formation and Behavior in Liquid-Liquid Extraction Processes  

SciTech Connect (OSTI)

Aqueous haze formation and behavior was studied in the liquid-liquid system tri-n-butyl phosphate in odorless kerosene and 3M nitric acid with uranyl nitrate and cesium nitrate representing the major solute and an impurity, respectively. A pulsed column, mixer-settler and centrifugal contactor were chosen to investigate the effect of different turbulence characteristics on the manifestation of haze since these contactors exhibit distinct mixing phenomena. The dispersive processes of drop coalescence and breakage, and water precipitation in the organic phase were observed to lead to the formation of haze drops of {approx}1 um in diameter. The interaction between the haze and primary drops of the dispersion was critical to the separation efficiency of the liquid-liquid extraction equipment. Conditions of high power input and spatially homogeneous mixing enabled the haze drops to become rapidly assimilated within the dispersion to maximize the scrub performance and separation efficiency of the equipment.

Arm, Stuart T.; Jenkins, J. A.

2006-07-31T23:59:59.000Z

299

Chapter Two - Automated Extraction of GUI Models for Testing  

Science Journals Connector (OSTI)

Abstract A significant challenge in applying model-based testing on software systems is that manually designing the test models requires considerable amount of effort and deep expertise in formal modeling. When an existing system is being modeled and tested, there are various techniques to automate the process of producing the models based on the implementation. Some approaches aim to fully automated creation of the models, while others aim to automate the first steps to create an initial model to serve as a basis to start the manual modeling process. Especially graphical user interface (GUI) applications, including mobile and Web applications, have been a good domain for model extraction, reverse engineering, and specification mining approaches. In this chapter, we survey various automated modeling techniques, with a special focus on GUI models and their usefulness in analyzing and testing of the modeled GUI applications.

Pekka Aho; Teemu Kanstrén; Tomi Räty; Juha Röning

2014-01-01T23:59:59.000Z

300

New extraction-based re-refining process saves money  

SciTech Connect (OSTI)

A novel re-refining process uses solvent extraction and distillation to process used oil at lower cost and much smaller volumes than existing technology will allow. Current technology typically requires minimum processing volumes of 40,000 gpd for economically viable operation. The new process, developed by Interline Resources Corp., Alpine, Utah, can operate economically on volumes as small as 5,000 gpd. The new process has eliminated the need for thin-film evaporators, as well as the very expensive hydrofinishing step. The elimination of this capital-intensive equipment is made possible by the patented Mellon Process. In this process, the water, additives, and solids are removed at ambient conditions, thus allowing the resulting oil to be handled in traditional distillation equipment. The paper describes the process, yields, costs, and operating experience of the commercial-scale re-refinery at Draper, Utah.

Not Available

1994-05-30T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Phase behavior of CO{sub 2}/crude oil mixtures in supercritical fluid extraction system: Experimental data and modeling  

SciTech Connect (OSTI)

Continuous multiple-contact extractions of a crude oil were carried out with supercritical CO{sub 2} in order to assess the effect of the density and critical point of a solvent on the extraction performance as a function of process variables. Most of the extraction performance was solvent density dependent. In the vicinity of the critical point of CO{sub 2}, however, the solvent density was not the only parameter that governed extraction yields. The results of simulated distillation and gas chromatography-mass spectrometry analyses of extracts represented that the earlier extracts contained lighter compounds and the latter extracts contained progressively heavier compounds. As the extraction proceeded, relatively greater amounts of paraffinic compounds and lesser amounts of naphthenic and aromatic compounds were extracted. This compositional change occurring during a dynamic extraction was also ascertained by phase equilibrium calculations using the Soave-Redlich-Kwong equation of state and a component-lumping procedure.

Hwang, J. [Kyung In Energy Co., Inchon (Korea, Republic of). R and D Center; Park, S.J. [Dongguk Univ., Seoul (Korea, Republic of). Dept. of Chemical Engineering; Deo, M.D.; Hanson, F.V. [Univ. of Utah, Salt Lake City, UT (United States). Dept. of Chemical and Fuels Engineering

1995-04-01T23:59:59.000Z

302

Electronics for fast ion extraction from EBIS devices  

Science Journals Connector (OSTI)

Future synchrotrons for cancer therapy could profit from single turn injection in terms of size costs and ease of operation [O. Kester R. Becker and M. Kleinod Rev. Sci. Instrum. 67 (1996)]. Short (?1.5 ?s) and intense (?1.3 mA) pulses of highly charged light ions ( C 6+ ? N 7+ ? O 8+ ) are a requirement for these future therapy facilities which can be provided by an EBIS ion source. Such a medically dedicated EBIS has an electron beam of 400 mA at 5 keV and needs an electron current density of 100 A/cm 2 for a repetition rate of 10 Hz. To obtain a 1.5 ?s ion pulse it is necessary to switch the drift tube potentials up to 1.6 kV (for a ratio of beam to drift tube of 1/20) in some 100 ns. To avoid spreading out of the pulse due to the restoration of the full space charge depression at locations where ions have already been extracted the potentials applied to the drift tubes are changed with time. They will be adjusted for each drift tube according to the transit time of the ion pulse. Furthermore the drift tubes are fully interpenetrating each other with tapered fingers in order to locally distribute the action of the applied potentials. This provides a potential wall which is following the extracted ion pulse and results in a compressed short ion pulse for single turn injection into a synchrotron.

H. Höltermann; R. Becker; M. Kleinod; I. Müller

2004-01-01T23:59:59.000Z

303

Extraction of trivalent lanthanides and actinides by ``CMPO-like`` calixarenes  

SciTech Connect (OSTI)

Extractive properties of calix[4]arenes bearing carbamoylmethylphosphine oxide moieties on their upper rim toward trivalent lanthanide and actinide cations were investigated. The study revealed that these molecules selectively extract light lanthanides and actinides from heavy lanthanides. All parameters present in the extraction system were varied to determine the origin of the selectivity. It was found that this selectivity requires a calix[4]arene platform and acetamidophosphine oxide groups containing phenyl substituents on the four phosphorus atoms.

Delmau, L.H.; Simon, N. [CEA Cadarache, St. Paul lez Durance (France)] [CEA Cadarache, St. Paul lez Durance (France); Schwing-Weill, M.J. [ECPM, Strasbourg (France)] [and others] [ECPM, Strasbourg (France); and others

1999-04-01T23:59:59.000Z

304

E-Print Network 3.0 - atf2 extraction line Sample Search Results  

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

mismatch factors (Bmag X, Y) measured in the ATF2 extraction line in May 2009 during coupling... (Received 1 ... Source: Ecole Polytechnique, Centre de mathmatiques Collection:...

305

Applications of Extraction Chromatography in the Development of Radionuclide Generator Systems for Nuclear Medicine  

Science Journals Connector (OSTI)

Applications of Extraction Chromatography in the Development of Radionuclide Generator Systems for Nuclear Medicine ... Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 ...

Mark L. Dietz; E. Philip Horwitz

2000-08-12T23:59:59.000Z

306

E-Print Network 3.0 - automated fault extraction Sample Search...  

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

with extracted... automation, fault diagnosis, asset management, as well as power system modeling and simulation. 12;... 1 F Voltage Sag Data Utilization for Distribution Fault...

307

Operational Experience with a PLC Based Positioning System for a LHC Extraction Protection Element  

E-Print Network [OSTI]

The LHC Beam Dumping System (LBDS) nominally dumps the beam synchronously with the passage of the particle free beam abort gap at the beam dump extraction kickers.

Boucly, C; Bracco, C; Carlier, E; Magnin, N; Voumard, N

2014-01-01T23:59:59.000Z

308

E-Print Network 3.0 - ash solvent extraction Sample Search Results  

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

Energy 4 The chemistry of minerals obtained from the combustion of Jordanian oil shale Summary: by solvent extraction of spent shale: experiment and kinetic analysis....

309

E-Print Network 3.0 - alkaline-side solvent extraction Sample...  

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

extractability and solvent swelling.15 Nishioka and Larsen16 found that by heating coal... in a slightly polar solvent (chlorobenzene) to 115 ... Source: Thomas, Mark - School...

310

E-Print Network 3.0 - artificial ab-mountains extraction Sample...  

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

Sciences 34 Curriculum Vitae of Rudy Setiono Contact information Summary: , Chiang Mai, Thailand, November 2001. 11. Techniques for extracting rules from artificial neural...

311

Kinetics of extraction of alkylpyrocatecholates of europium and transplutonium elements from carbonate solutions  

SciTech Connect (OSTI)

The kinetics of extraction of alkylpyrocatecholates of europium, americium, curium, and californium from solutions containing 0.01-1.5 M potassium carbonate at pH = 10.5-13.2 has been studied. It has been shown that extraction slows down with increase of concentration of the complexing agent and accelerates with rise of pH. The chemical stage limiting the extraction rate seems to proceed on the aqueous phase slide. The conditions of americium(III) and curium(III) separation by extraction chromatography have been determined making use of the kinetic data.

Novikov, A.P.; Bukina, T.I.; Karalova, Z.K.; Myasoedov, B.F.

1987-11-01T23:59:59.000Z

312

Feature Extraction of Gesture Recognition Based on Image Analysis by Using Matlab.  

E-Print Network [OSTI]

?? This thesis mainly focuses on the research of gesture extraction and finger segmentation in the gesture recognition. In this paper, we used image analysis… (more)

Chaofan, Hao

2014-01-01T23:59:59.000Z

313

Effects of Magnet Errors in the ILC 14 mrad Extraction Line  

SciTech Connect (OSTI)

The ILC baseline extraction line is designed for 14 mrad horizontal crossing angle between e{sup +} and e{sup -} colliding beams at Interaction Point (IP). The extraction optics in the Interaction Region (IR) includes a detector integrated dipole field (anti-DID) to reduce orbit perturbation caused by the detector solenoid and minimize detector background. This paper presents a study of random field and alignment errors in the extraction magnets, compensation of the induced orbit perturbation, and effects of errors on extraction beam power loss. The results are obtained for the baseline ILC energy of 500 GeV center-of-mass and three options of beam parameters.

Toprek, Dragan; /VINCA Inst. Nucl. Sci., Belgrade; Nosochkov, Yuri; /SLAC

2009-05-08T23:59:59.000Z

314

Extraction of nitric acid, uranyl nitrate, and bismuth nitrate from aqueous nitric acid solutions with CMPO  

SciTech Connect (OSTI)

DOE sponsored development of the transuranium extraction (TRUEX) process for removing actinides from radioactive wastes. The solvent is a mixture of CMPO and TBP. Since the extraction characteristics of CMPO are not as well understood as those of TBP, the extraction of nitric acid, uranyl nitrate, and bismuth nitrate with CMPO (dissolved in n-dodecane) were studied. Results indicate that CMPO extracts nitric acid with a 1:1 stoichiometry; equilibrium constant is 2. 660{plus_minus}0.092 at 25 C, and extraction enthalpy is -5. 46{plus_minus}0.46 kcal/mol. Slope analysis indicates that uranyl nitrate extracts with a mixed equilibria of 1:1 and 2:1 stoichiometries in nearly equal proportion. Equil. constant of the 2: 1 extraction was 1.213 {times} 10{sup 6}{plus_minus}3.56 {times} 10{sup 4} at 25 C; reaction enthalpy was -9.610{plus_minus}0.594 kcal/mol. Nitration complexation constant is 8.412{plus_minus}0.579, with an enthalpy of -10.72{plus_minus}1.87 kcal/mol. Bismuth nitrate also extracts with a mixed equilibria of (perhaps) 1:1 and 2:1 stoichiometries. A 2:1 extraction equilibrium and a nitrate complexation adequately model the data. Kinetics and enthalpies were also measured.

Spencer, B.B.

1995-08-01T23:59:59.000Z

315

Wild Rubber Production As A Livelihood Strategy In A North-Amazonian Extractive Reserve.  

E-Print Network [OSTI]

??This study is based on and contributes to the multidisciplinary debate of the extractive reserves as a method of sustainable development of the Brazilian Amazonia.… (more)

Savolainen, Unna

2008-01-01T23:59:59.000Z

316

E-Print Network 3.0 - atmospheric methane extracted Sample Search...  

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

search results for: atmospheric methane extracted Page: << < 1 2 3 4 5 > >> 1 Oceanic sediment methane, including methane clathrate hydrates (hydrates), is the Earth's largest...

317

E-Print Network 3.0 - axon structure extraction Sample Search...  

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

mechanisms in vertebrates, Caenorhabditis elegans, and Drosophila melanogaster has led to Summary: be induced by exposure to extracts of embryonic spinal cord tissue (in...

318

Process Simulation, Modeling & Design for Soybean Oil Extraction Using Liquid Propane.  

E-Print Network [OSTI]

??This study investigates the use of liquid propane for soybean oil extraction and the use of commercial software for process modeling and simulation. Soybean oil… (more)

Patrachari, Anirudh Ramanujan

2008-01-01T23:59:59.000Z

319

Process Design and Simulation for Extraction of Milk Fat Using Liquid Propane.  

E-Print Network [OSTI]

??Numerous studies have been conducted to increase the utilization of milk by fractionating the fat. This work examines the use of liquid propane for extraction… (more)

Byluppala, Harita

2010-01-01T23:59:59.000Z

320

E-Print Network 3.0 - anthocyanins rich extract-induced Sample...  

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

and colorless... .; Noda, T.; Tanaka, H.; Fukushima, M. Anthocyanin-rich purple potato flake extract has antioxidant Source: Tang, Juming - Department of Biological Systems...

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Effects of hydrogen donor additives on the coking properties of high-temperature coal extracts.  

E-Print Network [OSTI]

?? Refcoal is a carbon precursor obtained by alkali-mediated extraction of coal with aprotic solvents such as DMF. Refcoal can be converted into a graphitic… (more)

Makgato, Matlou Hector

2009-01-01T23:59:59.000Z

322

The effect of diabietic acid on the coking of oxidised solvent-extracted coal.  

E-Print Network [OSTI]

??Refcoal is a refined carbon source obtained by extraction of coal with dimethylformamide (DMF). During the coking process, Refcoal goes through a mesophase (fluid) stage… (more)

Ludere, Margaret Tshimangadzo

2008-01-01T23:59:59.000Z

323

Multistage extraction separation of Am(III) and Cm(III) in planet centrifuges  

Science Journals Connector (OSTI)

Countercurrent chromatography (CCC), a support-free partition chromatography, allows realization of multistep extraction separations in specially designed planet centrifuges. Highly efficient Am(III)/Cm(III) s...

T. A. Maryutina; M. N. Litvina; D. A. Malikov; B. Ya. Spivakov…

2004-11-01T23:59:59.000Z

324

A micro hot test of the Chalmers-GANEX extraction system on used nuclear fuel  

SciTech Connect (OSTI)

In the present study, a 'micro hot test' has been performed using the Chalmers-GANEX (Group Actinide Extraction) system for partitioning of used nuclear fuel. The test included a pre-extraction step using N,N-di-2- ethylhexyl-butyramide (DEHBA) in n-octanol to remove the bulk part of the uranium. This pre-extraction was followed by a group extraction of actinides using the mixture of TBP and CyMe{sub 4}-BTBP in cyclohexanone as suggested in the Chalmers-GANEX process, and a three stage stripping of the extracted actinides. Distribution ratios for the extractions and stripping were determined based on a combination of ?- and ?-spectrometry, as well as ICP-MS measurements. Successful extraction of uranium, plutonium and the minor actinides neptunium, americium and curium was achieved. However, measurements also indicated that co-extraction of europium occurs to some extent during the separation. These results were expected based on previous experiments using trace concentrations of actinides and lanthanides. Since this test was only performed in one stage with respect to the group actinide extraction, it is expected that multi stage tests will give even better results. (authors)

Bauhn, L.; Hedberg, M.; Aneheim, E.; Ekberg, C.; Loefstroem-Engdahl, E.; Skarnemark, G. [Department of Chemical and Biological Engineering, Nuclear Chemistry, Chalmers University of Technology, Kemivaegen 4, SE-412 96 Goeteborg (Sweden)

2013-07-01T23:59:59.000Z

325

Economic and environmental conditions for extraction and recycling of ground power cables.  

E-Print Network [OSTI]

?? In the thesis the costs for extracting ground power cables from grass, asphalt or cobblestone using excavator or Kabel-X is examined. This is then… (more)

Larsson, Henric

2014-01-01T23:59:59.000Z

326

E-Print Network 3.0 - asiatica fruit extract Sample Search Results  

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

by Explorit Topic List Advanced Search Sample search results for: asiatica fruit extract Page: << < 1 2 3 4 5 > >> 1 Euphytica 128: 375388, 2002. 2002 Kluwer Academic Publishers....

327

Characterization and stability properties of polar extracts derived from a recent shale liquid  

SciTech Connect (OSTI)

A shale fuel of marginal stability has been used as a source of nitrogen-rich polar extracts. Polar compounds were isolated by mild acid extraction followed by silica gel adsorption and were identified by GC/MS. Alkyl substituted pyridines were the prevalent class of compounds present in most extracts. The effects of adding these shale derived fractions as dopants to a stable shale diesel fuel (D-11) were examined in terms of sediment formation and peroxide number under accelerated storage stability test conditions. The activities of the extracts in inducing fuel instability were correlated with their composition.

Mushrush, G.W.; Cooney, J.V.; Beal, E.J.; Hazlett, R.N.

1986-01-01T23:59:59.000Z

328

Design of ultrahigh energy laser amplifier system with high storage energy extraction  

Science Journals Connector (OSTI)

A design concept of realizing high storage energy extraction efficiency is presented for an ultrahigh energy laser system, stressing the advantage of variable-diameter aperture...

Gong, Mali; Sui, Zhan; Liu, Qiang; Fu, Xing

2013-01-01T23:59:59.000Z

329

Investigation of Pulsed Electric Field (PEF) as an Intensification Pretreatment for Solvent Lipid Extraction from Microalgae, utilizing Ethyl Acetate as a Greener Substitute to Chloroform-based Extraction  

E-Print Network [OSTI]

. Moreover, the novel utilization of Pulsed Electric Field (PEF) as a membrane permeating technique for intensification of the lipid extraction is analyzed. When compared to inherently toxic chloroform-based solvent (Bligh & Dyer method), this work...

Antezana Zbinden, Mauricio Daniel R.

2011-02-16T23:59:59.000Z

330

Recovery of uranium from phosphoric acid medium by polymeric composite beads encapsulating organophosphorus extractants  

SciTech Connect (OSTI)

The present study deals with the preparation and evaluation of the poly-ethersulfone (PES) based composite beads encapsulating synergistic mixture of D2EHPA and Cyanex 923 (at 4:1 mole ratio) for the separation of uranium from phosphoric acid medium. SEM was used for the characterization of the composite materials. Addition of 1% PVA (polyvinyl alcohol) improved the internal morphology and porosity of the beads. Additionally, microscopic examination of the composite bead confirmed central coconut type cavity surrounded by porous polymer layer of the beads through which exchange of metal ions take place. Effect of various experimental variables including aqueous acidity, metal ion concentration in aqueous feed, concentration of organic extractant inside the beads, extractant to polymer ratio, liquid to solid (L/S) ratio and temperature on the extraction of uranium was studied. Increase in acidity (1-6 M), L/S ratio (1- 10), metal ion concentration (0.2-3 g/L U{sub 3}O{sub 8}) and polymer to extractant ratio (1:4 -1:10) led to decrease in extraction of uranium. At 5.5 M (comparable to wet process phosphoric acid concentration) the extraction of uranium was about 85% at L/S ratio 5. Increase in extractant concentration inside the bead resulted in enhanced extraction of metal ion. Increase in temperature in the range of 30 to 50 Celsius degrees increased the extraction, whereas further increase to 70 C degrees led to the decrease in extraction of uranium. Amongst various reagents tested, stripping of uranium was quantitative by 12% Na{sub 2}CO{sub 3} solution. Polymeric beads were found to be stable and reusable up-to 10 cycles of extraction/stripping. (authors)

Singh, D.K.; Yadav, K.K.; Varshney, L.; Singh, H. [Bhabha Atomic Research Centre, Mumbai 400 085 (India)

2013-07-01T23:59:59.000Z

331

PRODUCTION OF CARBON PRODUCTS USING A COAL EXTRACTION PROCESS  

SciTech Connect (OSTI)

This Department of Energy National Energy Technology Laboratory sponsored project developed carbon products, using mildly hydrogenated solvents to extract the organic portion of coal to create synthetic pitches, cokes, carbon foam and carbon fibers. The focus of this effort was on development of lower cost solvents, milder hydrogenation conditions and improved yield in order to enable practical production of these products. This technology is needed because of the long-term decline in production of domestic feedstocks such as petroleum pitch and coal tar pitch. Currently, carbon products represents a market of roughly 5 million tons domestically, and 19 million tons worldwide. Carbon products are mainly derived from feedstocks such as petroleum pitch and coal tar pitch. The domestic supply of petroleum pitch is declining because of the rising price of liquid fuels, which has caused US refineries to maximize liquid fuel production. As a consequence, the long term trend has a decline in production of petroleum pitch over the past 20 years. The production of coal tar pitch, as in the case of petroleum pitch, has likewise declined significantly over the past two decades. Coal tar pitch is a byproduct of metallurgical grade coke (metcoke) production. In this industry, modern metcoke facilities are recycling coal tar as fuel in order to enhance energy efficiency and minimize environmental emissions. Metcoke production itself is dependent upon the production requirements for domestic steel. Hence, several metcoke ovens have been decommissioned over the past two decades and have not been replaced. As a consequence sources of coal tar are being taken off line and are not being replaced. The long-term trend is a reduction in coal tar pitch production. Thus import of feedstocks, mainly from Eastern Europe and China, is on the rise despite the relatively large transportation cost. To reverse this trend, a new process for producing carbon products is needed. The process must be economically competitive with current processes, and yet be environmentally friendly as well. The solvent extraction process developed uses mild hydrogenation of low cost oils to create powerful solvents that can dissolve the organic portion of coal. The insoluble portion, consisting mainly of mineral matter and fixed carbon, is removed via centrifugation or filtration, leaving a liquid solution of coal chemicals and solvent. This solution can be further refined via distillation to meet specifications for products such as synthetic pitches, cokes, carbon foam and fibers. The most economical process recycles 85% of the solvent, which itself is obtained as a low-cost byproduct from industrial processes such as coal tar or petroleum refining. Alternatively, processes have been developed that can recycle 100% of the solvent, avoiding any need for products derived from petroleum or coal tar.

Dady Dadyburjor; Philip R. Biedler; Chong Chen; L. Mitchell Clendenin; Manoj Katakdaunde; Elliot B. Kennel; Nathan D. King; Liviu Magean; Peter G. Stansberry; Alfred H. Stiller; John W. Zondlo

2004-08-31T23:59:59.000Z

332

AQUEOUS BIPHASE EXTRACTION FOR PROCESSING OF FINE COAL  

SciTech Connect (OSTI)

Ever-stringent environmental constraints dictate that future coal cleaning technologies be compatible with micron-size particles. This research program seeks to develop an advanced coal cleaning technology uniquely suited to micron-size particles, i.e., aqueous biphase extraction. The partitioning behavior of fly ash in the PEG-2000 Na{sub 2}SO{sub 4}/H{sub 2}O system was studied and the solid in each fraction was characterized by CHN analysis (carbon content), X-ray diffraction (XRD; crystal component), and inductively coupled plasma spectrophotometry (ICP; elemental composition in the ash). In the pH range from 2 to 5, the particles separated into two different layers, i.e., the polymer-rich (top) and salt-rich (bottom) layers. However, above pH 5, the particles in the polymer-rich phase split into two zones. The percent carbon content of the solids in the upper zone ({approximately}80 wt%) was higher than that in the parent sample (63.2 wt%), while the lower zone in the polymer-rich phase had the same percent ash content as the original sample. The particles in the salt-rich phase were mainly composed of ash (with < 4 wt% carbon content). However, when the solid concentration in the whole system increased from 1 wt% to 2 wt%, this 3-fraction phenomenon only occurred above pH 10. XRD results showed that the main crystal components in the ash included quartz, hematite, and mullite. The ICP results showed that Si, Al, and Fe were the major elements in the fly ash, with minor elements of Na, K, Ca, Mg, and Ba. The composition of the ash in the lower zone of the polymer-rich phase remained almost the same as that in the parent fly ash. The largest amount of product ({approximately}60% yield) with the highest carbon content ({approximately}80 wt% C) was obtained in the range pH 6-9. Based on the experimental results obtained, a flowsheet is proposed for the beneficiation of high-carbon fly ash with the aqueous biphase extraction process.

K. Osseo-Asare

2000-06-02T23:59:59.000Z

333

Dynamic Particle System for Mesh Extraction on the GPU University of Utah  

E-Print Network [OSTI]

@sci.utah.edu Charles Hansen University of Utah Salt Lake City, UT, USA hansen@cs.utah.edu ABSTRACT ExtractingDynamic Particle System for Mesh Extraction on the GPU Mark Kim University of Utah Salt Lake City, UT, USA mbk@cs.utah.edu Guoning Chen University of Utah Salt Lake City, UT, USA chengu

Utah, University of

334

DNA is a co-factor for its own replication in Xenopus egg extracts  

E-Print Network [OSTI]

to these extracts leads to the formation of synthetic nuclei, which undergo a single round of DNA replication (16 represent func- tional units of DNA replication in these synthetic nuclei. We previously developedDNA is a co-factor for its own replication in Xenopus egg extracts Ronald Lebofsky1 , Antoine M

335

Algorithm for Extracting Loosely Structured Data Records Through Digging Strict Patterns  

Science Journals Connector (OSTI)

Extracting loosely structured data records (LSDRs) has wide applications in many domains, such as forum pattern recognition, Weblogs data analysis, and books and news review analysis. Yet currently existing methods only work well for strongly structured ... Keywords: content feature, data extraction, loosely structured data record, semi-structured data, tree edit distance

Qing Li; Jing Chen; Yipu Wu

2009-09-01T23:59:59.000Z

336

New methods and materials for solid phase extraction and high performance liquid chromatography  

SciTech Connect (OSTI)

This paper describes methods for solid phase extraction and high performance liquid chromatography (HPLC). The following are described: Effects of Resin Sulfonation on the Retention of Polar Organic Compounds in Solid Phase Extraction; Ion-Chromatographic Separation of Alkali Metals In Non-Aqueous Solvents; Cation-Exchange Chromatography in Non-Aqueous Solvents; and Silicalite As a Stationary Phase For HPLC.

Dumont, P.J.

1996-04-23T23:59:59.000Z

337

Solvent-free microwave extraction of bioactive compounds provides a tool for green analytical chemistry  

Science Journals Connector (OSTI)

Abstract We present an overview on solvent-free microwave-extraction techniques of bioactive compounds from natural products. This new technique is based on the concept of green analytical chemistry. It has proved to be an alternative to other techniques with the advantages of reducing extraction times, energy consumption, solvent use and CO2 emissions.

Ying Li; Anne Sylvie Fabiano-Tixier; Maryline Abert Vian; Farid Chemat

2013-01-01T23:59:59.000Z

338

Theoretical and Experimental Studies of the Extracted MCI Beam from an ECR Ion Source  

SciTech Connect (OSTI)

With the development of Electron Cyclotron Resonance Ion Source (ECRIS), very high performance ECRIS nowadays have been set up one by one around the world, such as the GTS in Grenoble, SERSE in Catania, LECR3 in Lanzhou and etc, which can produce very intense Multiply Charged Ion (MCI) beam. But till now, the study of the extracted MCI beam from an ECRIS remains open. In this article, we present a theoretical and experimental study of the extracted MCI beam. In the theoretical part, the influences of the extraction system on the extracted ion beam quality are mainly analyzed. The aspects that have influences on the extracted ion beam quality have been analyzed. With the instruction of the analysis, the PBGUNS code is used to simulate the influences of some important aspects concerning the extraction system. The influences of the extraction system geometry design, magnetic field, and the space charge effect will be detailedly presented in this article. In the experimental part, with an Electric-Sweep Scanner (ESS) emittance detection system, the influences on the extracted ion beam emittance of some typical parameters of ECRIS have been researched, such as the injected RF power, the RF frequency, the magnetic field and etc. The obtained results and the corresponding explanations are presented. Some of the results are well in accord with some empirical laws, but some other results seem to be disputed.

Sun, L.T.; Cao, Y.; Zhao, H.W.; Guo, X.H.; Zhang, Z.M.; Feng, Y.C.; Li, J.Y.; Ma, L.; Li, J.; Zhao, H.Y.; He, W.; Li, X.X. [Institute of Modern Physics (IMP), Chinese Academy of Sciences, Lanzhou (China); Hitz, D.; Girard, A. [CEA-Grenoble, Departement de Recherche Fondamentale sur la Matiere Condensee, Service des Basses Temperatures, 17 Rue des Martyrs, 38054 Grenoble Cedex 9 (France)

2005-03-15T23:59:59.000Z

339

A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths  

E-Print Network [OSTI]

A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic extraction. Following this preprocessing, channels are defined as curves of minimal effort, or geodesics and geodesic paths, J. Geophys. Res., 115, F01002, doi:10.1029/2009JF001254. 1. Introduction [2] The detection

Foufoula-Georgiou, Efi

340

SIMPLIFIED BUILDING MODELS EXTRACTION FROM ULTRA-LIGHT UAV Olivier Kung1  

E-Print Network [OSTI]

SIMPLIFIED BUILDING MODELS EXTRACTION FROM ULTRA-LIGHT UAV IMAGERY Olivier K¨ung1 , Christoph, Simplified Building Models ABSTRACT: Generating detailed simplified building models such as the ones present element of simplified building models extraction is the seamless integration of the outputs

Fua, Pascal

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Anticancer activity of peach and plum extracts against human breast cancer in vitro and in vivo  

E-Print Network [OSTI]

less effective than RL extracts, showed greater effects on MDA-MB-435 cells compared to the other cell lines. Fractionation of RL extracts into different groups of phenolic compounds allowed the identification of a fraction of phenolic acids (F1...

Noratto Dongo, Giuliana Doris

2009-05-15T23:59:59.000Z

342

Progress In Electromagnetics Research, Vol. 117, 118, 2011 A LATE-TIME ANALYSIS PROCEDURE FOR EXTRACT-  

E-Print Network [OSTI]

FOR EXTRACT- ING WEAK RESONANCES. APPLICATION TO THE SCHUMANN RESONANCES OBTAINED WITH THE TLM METHOD J. A University of Granada, Granada E-18071, Spain Abstract--The sequence of Schumann resonances is unique to extract the weak Schumann resonances contained in this electric field component. 1. INTRODUCTION Solar

Granada, Universidad de

343

Nuclear Assembly with k DNA in Fractionated Xenopus Egg Extracts: An Unexpected Role for Glycogen in  

E-Print Network [OSTI]

Nuclear Assembly with k DNA in Fractionated Xenopus Egg Extracts: An Unexpected Role for Glycogen. Crude extracts of Xenopus eggs are capable of nuclear assembly around chromatin templates or even around protein-free, naked DNA templates. Here the requirements for nuclear assembly around a naked DNA template

Forbes, Douglass

344

ATP measurement in sheep rumen digesta using dimethyl sulfoxide as an extraction reagent  

E-Print Network [OSTI]

ATP measurement in sheep rumen digesta using dimethyl sulfoxide as an extraction reagent Sylvie-en-Josas France. Summary. Dimethyl sulfoxide (DMSO) has been used to extract adenosine 5' triphosphate (ATP) from-dietary variations. The new method developed can be applied to the study of ATP in in vitro systems. Introduction

Boyer, Edmond

345

Knowledge Extraction from Neural Networks using the All-Permutations Fuzzy Rule Base  

E-Print Network [OSTI]

Knowledge Extraction from Neural Networks using the All-Permutations Fuzzy Rule Base Eyal Kolman and a specific fuzzy rule base to extract the knowledge embedded in the network. We demonstrate this using and comprehensible description of the knowledge learned by the network during its training. Keywords: Feedforward

Margaliot, Michael

346

Separation of transplutonium elements by the method of emulsion membrane extraction  

SciTech Connect (OSTI)

A study is made of the kinetics of extraction of transplutonium elements by liquid emulsions of the type water and oil, containing di-2-ethylhexylphosphoric acid as the carrier and span-80 as the emulsifier. Conditions of efficient extraction and separation of three-valence americium, curium, and californium from solutions of diethylenetriaminepentaacetic acid are identified.

Novikov, A.P.; Myasoedov, B.F.

1988-05-01T23:59:59.000Z

347

Video Object Segmentation through Spatially Accurate and Temporally Dense Extraction of Primary Object Regions  

E-Print Network [OSTI]

Video Object Segmentation through Spatially Accurate and Temporally Dense Extraction of Primary primary object segments in videos in the `object proposal' domain. The extracted primary object regions are then used to build object models for optimized video segmentation. The proposed approach has several

Wu, Shin-Tson

348

Extraction of arsenate and arsenite species from soils and sediments Myron Georgiadis a  

E-Print Network [OSTI]

Extraction of arsenate and arsenite species from soils and sediments Myron Georgiadis a , Yong Cai 2005 NaDDC preserves arsenite during soil and sediment extraction. Abstract The primary objective and bioavailable arsenic species from soil and sediment while at the same time minimizing the transformation

Florida, University of

349

A Parametric Study of Electron Extraction from a Low Frequency Inductively Coupled RF-Plasma Source  

E-Print Network [OSTI]

: The electron extraction from a low-frequency (2 MHz) inductively-coupled rf-plasma cathode is characterizedA Parametric Study of Electron Extraction from a Low Frequency Inductively Coupled RF-Plasma Source and rf-plasma source, rf-power and xenon gas flow. The results demonstrate that the electron supply from

350

AUTOMATIC EXTRACTION OF THE OPTIC DISC BOUNDARY FOR DETECTING RETINAL DISEASES  

E-Print Network [OSTI]

AUTOMATIC EXTRACTION OF THE OPTIC DISC BOUNDARY FOR DETECTING RETINAL DISEASES Muhammad Salman shape model for the extraction of Optic Disc boundary. The determination of Optic Disc boundary used as a reference point to lo- cate other retinal structures, and any structural change in Optic Disc

Li, Baihua

351

Extraction of Biofuels and Biofeedstocks from Aqueous Solutions Using Ionic Liquids  

E-Print Network [OSTI]

Extraction of Biofuels and Biofeedstocks from Aqueous Solutions Using Ionic Liquids Luke D. Simoni-Butanol, Extraction, Liquid-Liquid Equilibrium, Excess Gibbs Energy Models, Biofuels #12;1 1. Introduction other organic compounds can be produced biologically, and thus can be considered as biofuel candidates

Stadtherr, Mark A.

352

Citrus limonoids and flavonoids: extraction, antioxidant activity and effects on hamster plasma cholesterol distribution  

E-Print Network [OSTI]

atherogenesis. Supercritical CO2 (SC-CO2) was attempted to extract limonoids from grapefruit seeds and molasses. Limonin aglycone was successfully extracted with SC-CO2 directly from grapefruit seeds with the yield of 6.3 mg/g seeds at 48.3 MPa, 50...

Yu, Jun

2005-11-01T23:59:59.000Z

353

The SX Solver: A Computer Program for Analyzing Solvent-Extraction Equilibria: Version 3.0  

SciTech Connect (OSTI)

A new computer program, the SX Solver, has been developed to analyze solvent-extraction equilibria. The program operates out of Microsoft Excel and uses the built-in Solver function to minimize the sum of the square of the residuals between measured and calculated distribution coefficients. The extraction of nitric acid by tributyl phosphate has been modeled to illustrate the programs use.

Lumetta, Gregg J.

2002-01-17T23:59:59.000Z

354

A green function-based parasitic extraction method for inhomogeneous substrate layers  

Science Journals Connector (OSTI)

This paper presents a new Green function-based approach for substrate parasitic extraction in substrates with inhomogeneous layers. This new formulation allows analysis of noise coupling with sinkers, trenches and wells, - a limitation in prior Green ... Keywords: green function, parasitic extraction, substrate noise

Chenggang Xu; Ranjit Gharpurey; Terri S. Fiez; Kartikeya Mayaram

2005-06-01T23:59:59.000Z

355

Extraction and Modeling of the Optoelectronic Characteristics of an Optical Interconnect Link  

E-Print Network [OSTI]

Extraction and Modeling of the Optoelectronic Characteristics of an Optical Interconnect Link a technique that enables the extraction and modeling of some of the channel's optoelectronic characteristics and optoelectronic com- ponents utilized in the link. 1. Introduction In the last decade optical interconnects have

Esener, Sadik C.

356

High-Speed extraction model of interest region in the parcel image of large size  

Science Journals Connector (OSTI)

This paper deals with a model for the high-speed extraction of ROI (Region Of Interest) during the process of logistics transported on conveyor belt. The objective of this paper is to extract various ROIs from large size image of logistics more than ...

Moon-sung Park; Il-sook Kim; Eun-kyung Cho; Young-hee Kwon; Jong-heung Park

2005-09-01T23:59:59.000Z

357

Cross-document Event Extraction and Tracking: Task, Evaluation, Techniques and Challenges  

E-Print Network [OSTI]

Cross-document Event Extraction and Tracking: Task, Evaluation, Techniques and Challenges Heng Ji This paper proposes a new task of cross-document event extraction and tracking and its evaluation metrics. We a richer set of views than is possible with document clustering for summarization or with topic tracking

358

Traveling waves in yeast extract and in cultures of Dictyostelium discoideum  

E-Print Network [OSTI]

Traveling waves in yeast extract and in cultures of Dictyostelium discoideum Stefan C. Mu traveling reaction-diffusion waves occur in response to oscillatory reactions. Glycolytic degradation of sugar in a yeast extract leads to the spontaneous formation of NADH and proton waves. Manipula- tion

Steinbock, Oliver

359

Investigation of metal ion extraction and aggregate formation combining acidic and neutral organophosphorous reagents  

SciTech Connect (OSTI)

In the present study, we investigate how varying mixtures of tri-n-butyl phosphate (TBP) and dibutyl phosphate (HDBP) results in enhanced extraction of lanthanum(III), La{sup 3+}, and dysprosium(III), Dy{sup 3+}. Water and metal ion extraction were carefully monitored as a function of TBP:HDBP mole ratio.In addition to these techniques, EXAFS was used to determine the coordination environment of the metal ion in this system. To produce the necessary signal, a concentration of 1.25*10{sup -3} M La{sup 3+} and Dy{sup 3+} was used. Although previous studies of synergistic extraction of metal cations using combinations of neutral and acidic reagents explain the enhanced extraction by increased dehydration of the metal ion and the formation of mixed extractant complexes, our evidence for the increased water extraction coupled with the aggregate formation suggests a reverse micellar aspect to synergism in the system containing TBP and HDBP. It is quite possible that both of these phenomena contribute to our system behavior. The EXAFS data shows that, based on coordination numbers alone, several possible structures may exist. From this study, we cannot provide a definitive answer as to the nature of extraction in this system or the exact complex formed during extraction.

Braatz, A.D.; Nilsson, M. [Department of Chemical Engineering and Materials Science, 916 Engineering Tower, University of California-Irvine, Irvine, CA 92697-2575 (United States); Ellis, R.; Antonio, M. [Chemical Science and Engineering Division, Argonne National Laboratory, Building 200 9700 South Cass Ave, Argonne, IL 60439-4831 (United States)

2013-07-01T23:59:59.000Z

360

Extraction of thermal time constant in HBTs using small signal measurements.  

E-Print Network [OSTI]

with a sine wave around a fixed power dissipation point (e.g. P 0 in Fig. 1), it is possible to find, Sweden. + University of Ulm, Abt. EBS, D­89069 Ulm, Germany. Abstract A novel method for finding extraction procedures need to achieve a strong variation of power dissipation during the extraction

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

WORKING PAPER N 2010 -11 Carbon price and optimal extraction of a polluting fossil  

E-Print Network [OSTI]

WORKING PAPER N° 2010 - 11 Carbon price and optimal extraction of a polluting fossil fuel atmospheric CO2. For instance, Chakravorty et al. (2006b) examine the optimal fossil fuel price path, when AGRONOMIQUE halshs-00564852,version1-10Feb2011 #12;Carbon Price and Optimal Extraction of a Polluting Fossil

Paris-Sud XI, Université de

362

Molecularly Imprinted Solid-Phase Extraction in the Analysis of Agrochemicals  

Science Journals Connector (OSTI)

......Solid-Phase Extraction in the Analysis of Agrochemicals Ling-Xiao Yi Rou Fang Guan-Hua...widely applied to the extraction of agrochemicals. In this review, the mechanism of...applications of MISPE in the analysis of agrochemicals such as herbicides, fungicides and......

Ling-Xiao Yi; Rou Fang; Guan-Hua Chen

2013-08-01T23:59:59.000Z

363

Ability of Daphnia Cell-Free Extract to Damage Escherichia coli Cells  

Science Journals Connector (OSTI)

...ability ofa D. magna cell-free extract (CFE) to lyse Escherichia coli cells. MATERIALS...lactose in the growth medi- um. Daphnia CFE preparation. About 100 daphnids were homogenized...and the supernatant was used as the CFE. The effect of this extract on E. coli...

Ora Hadas; Yehuda Kott; Uriel Bachrach; Benzion Cavari

1983-04-01T23:59:59.000Z

364

Extraction of Foetal Contribution to ECG Recordings Using Cyclostationarity-Based  

E-Print Network [OSTI]

Extraction of Foetal Contribution to ECG Recordings Using Cyclostationarity-Based Source Separation of interest is found to be free from any interferences with the mother's ECG (MECG) signal. Experimental-Blind Source Extraction, Foetal Electrocardiogram 1 Introduction Electrocardiograms (ECG) are very often used

Boyer, Edmond

365

ROBUST 3-WAY TENSOR DECOMPOSITION AND EXTENDED STATE KALMAN FILTERING TO EXTRACT FETAL ECG  

E-Print Network [OSTI]

ROBUST 3-WAY TENSOR DECOMPOSITION AND EXTENDED STATE KALMAN FILTERING TO EXTRACT FETAL ECG Mohammad ABSTRACT This paper addresses the problem of fetal electrocardiogram (ECG) extraction from multichannel that are robust to outliers are proposed and used to better track weak traces of the fetal ECG. Then, the state

Boyer, Edmond

366

EXTENSION OF AN AUTOMATIC BUILDING EXTRACTION TECHNIQUE TO AIRBORNE LASER SCANNER DATA CONTAINING DAMAGED BUILDINGS  

E-Print Network [OSTI]

EXTENSION OF AN AUTOMATIC BUILDING EXTRACTION TECHNIQUE TO AIRBORNE LASER SCANNER DATA CONTAINING DAMAGED BUILDINGS F. Tarsha-Kurdi a , M. Rehor b , T. Landes a , P. Grussenmeyer a , H.-P. Bähr b-peter.baehr)@ipf.uni-karlsruhe.de KEY WORDS: Laser scanning, LIDAR, Point Cloud, DSM, Segmentation, Extraction, Building, Disaster

Paris-Sud XI, Université de

367

Use of extractive distillation to produce concentrated nitric acid  

SciTech Connect (OSTI)

Concentrated nitric acid (> 95 wt %) is needed for the treatment of off-gases from a fuels-reprocessing plant. The production of concentrated nitric acid by means of extractive distillation in the two-pot apparatus was studied to determine the steady-state behavior of the system. Four parameters, EDP volume (V/sub EDP/) and temperature (T/sub EDP/), acid feed rate, and solvent recycle, were independently varied. The major response factors were percent recovery (CPRR) and product purity (CCP). Stage efficiencies also provided information about the system response. Correlations developed for the response parameters are: CPRR = 0.02(V/sub EDP/ - 800 cc) + 53.5; CCP = -0.87 (T/sub EDP/ - 140/sup 0/C) + 81; eta/sub V,EDP/ = 9.1(F/sub feed/ - 11.5 cc/min) - 0.047(V/sub EDP/ - 800 cc) - 2.8(F/sub Mg(NO/sub 3/)/sub 2// - 50 cc/min) + 390; and eta/sub L,EDP/ = 1.9(T/sub EDP/ - 140/sup 0/C) + 79. A computer simulation of the process capable of predicting steady-state conditions was developed, but it requires further work.

Campbell, P.C.; Griffin, T.P.; Irwin, C.F.

1981-04-01T23:59:59.000Z

368

DNA Extraction by Isotachophoresis in a Microfluidic Channel  

SciTech Connect (OSTI)

Biological assays have many applications. For example, forensics personnel and medical professionals use these tests to diagnose diseases and track their progression or identify pathogens and the host response to them. One limitation of these tests, however, is that most of them target only one piece of the sample - such as bacterial DNA - and other components (e.g. host genomic DNA) get in the way, even though they may be useful for different tests. To address this problem, it would be useful to extract several different substances from a complex biological sample - such as blood - in an inexpensive and efficient manner. This summer, I worked with Maxim Shusteff at Lawrence Livermore National Lab on the Rapid Automated Sample Prep project. The goal of the project is to solve the aforementioned problem by creating a system that uses a series of different extraction methods to extract cells, bacteria, and DNA from a complex biological sample. Biological assays can then be run on purified output samples. In this device, an operator could input a complex sample such as blood or saliva, and would receive separate outputs of cells, bacteria, viruses, and DNA. I had the opportunity to work this summer with isotachophoresis (ITP), a technique that can be used to extract nucleic acids from a sample. This technique is intended to be the last stage of the purification device. Isotachophoresis separates particles based on different electrophoretic mobilities. This technique is convenient for out application because free solution DNA mobility is approximately equal for DNA longer than 300 base pairs in length. The sample of interest - in our case DNA - is fed into the chip with streams of leading electrolyte (LE) and trailing electrolyte (TE). When an electric field is applied, the species migrate based on their electrophoretic mobilities. Because the ions in the leading electrolyte have a high electrophoretic mobility, they race ahead of the slower sample and trailing electrolyte ions. Conversely, the trailing electrolyte ions have a slow electrophoretic mobility, so they lag behind the sample, thus trapping the species of interest between the LE and TE streams. In a typical isotachophoresis configuration, the electric field is applied in a direction parallel to the direction of flow. The species then form bands that stretch across the width of the channel. A major limitation of that approach is that only a finite amount of sample can be processed at once, and the sample must be processed in batches. For our purposes, a form of free-flow isotachophoresis is more convenient, where the DNA forms a band parallel to the edges of the channel. To achieve this, in our chip, the electric field is applied transversely. This creates a force perpendicular to the direction of flow, which causes the different ions to migrate across the flow direction. Because the mobility of the DNA is between the mobility of the leading and the trailing electrolyte, the DNA is focused in a tight band near the center of the channel. The stream of DNA can then be directed to a different output to produce a highly concentrated outlet stream without batch processing. One hurdle that must be overcome for successful ITP is isolating the electrochemical reactions that result from the application of high voltage for the actual process of isotachophoresis. The electrochemical reactions that occur around metal electrodes produce bubbles and pH changes that are detrimental to successful ITP. The design of the chips we use incorporates polyacrylamide gels to serve as electrodes along the central channel. For our design, the metal electrodes are located away from the chip, and high conductivity buffer streams carry the potential to the chip, functioning as a 'liquid electrode.' The stream then runs alongside a gel barrier. The gel electrode permits ion transfer while simultaneously isolating the separation chamber from any contaminants in the outer, 'liquid electrode' streams. The difference in potential from one side of the chip to the other creates an electric field. Thi

Stephenson, S J

2011-08-10T23:59:59.000Z

369

Americium/curium extraction from a lanthanide borosilicate glass  

SciTech Connect (OSTI)

A solution containing kilogram quantities of highly radioactive isotopes of americium and curium (Am/Cm) and lanthanide fission products is currently stored in a process tank at the Department of Energy`s Savannah River Site (SRS). This tank and its vital support systems are old, subject to deterioration, and prone to possible leakage. For this reason, a program has been initiated to stabilize this material as a lanthanide borosilicate (LBS) glass. The Am/Cm has commercial value and is desired for use by the heavy isotope programs at the Oak Ridge National Laboratory (ORNL). A recovery flowsheet was demonstrated using a curium containing glass to extract the Am/Cm from the glass matrix. The procedure involved grinding the glass to less than 200 mesh and dissolving in concentrated nitric acid at 110 {degrees}C. Under these conditions, the dissolution was essentially 100% after 2 hours except for the insoluble silicon. Using a nonradioactive surrogate, the expected glass dissolution rate during Am/Cm recovery was bracketed by using both static and agitated conditions. The measured rates, 0.0082 and 0.040 g/hr.sq cm, were used to develop a predictive model for the time required to dissolve a spherical glass particle in terms of the glass density, particle size, and measured rate. The calculated dissolution time was in agreement with the experimental observation that the curium glass dissolution was complete in less than 2 hrs.

Rudisill, T.S.; Pareizs, J.M.; Ramsey, W.G.

1996-12-01T23:59:59.000Z

370

Amplifiers involving two-photon energy-extraction schemes  

Science Journals Connector (OSTI)

Amplifiers based on two-photon decay channels of inverted metastable species are examined from a rate-equation and practical-feasibility viewpoint. Approximate analytical solutions, within the rate-equation approximation, predict that resonant parametric generation coupled with anti-Stokes-stimulated Raman scattering (ASRS) is a strong competitor to straight two-photon emission. Expressions for initial growth rates indicate that large linear chromatic dispersion, proper linear absorptions, and resonant enhancements can initially favor two-photon emission, but that ASRS will ultimately dominate in most practical situations if inversion depletion does not occur early. For an amplifier based on degenerate two-photon processes, this situation has led to the proposal of running the system as an odd-harmonic generator, first extracting energy via two-photon emission followed by greater-than-100% conversion to the third, fifth, seventh, etc., harmonics. This type of amplifier response has important potential applications for laser-induced thermonuclear fusion as well as for the production of coherent vacuum-uv soft-x-ray systems. An examination of practical constraints provides further analytical relationships between various physical properties of prospective metastable species. Combining these results, several two-photon schemes are pointed out. Based on current technology, atomic iodine, which is inverted to the P122 state, appears to be the best medium for experiments, but other materials, such as atomic oxygen, show greater promise if absolute population inversions of high-density material are created at high efficiency.

R. L. Carman

1975-09-01T23:59:59.000Z

371

Automatic Pole and Q-Value Extraction for RF Structures  

SciTech Connect (OSTI)

The experimental characterization of RF structures like accelerating cavities often demands for measuring resonant frequencies of Eigenmodes and corresponding (loaded) Q-values over a wide spectral range. A common procedure to determine the Q-values is the -3dB method, which works well for isolated poles, but may not be applicable directly in case of multiple poles residing in close proximity (e.g. for adjacent transverse modes differing by polarization). Although alternative methods may be used in such cases, this often comes at the expense of inherent systematic errors. We have developed an automation algorithm, which not only speeds up the measurement time significantly, but is also able to extract Eigenfrequencies and Q-values both for well isolated and overlapping poles. At the same time the measurement accuracy may be improved as a major benefit. To utilize this procedure merely complex scattering parameters have to be recorded for the spectral range of interest. In this paper we present the proposed algorithm applied to experimental data recorded for superconducting higher-order-mode damped multi-cell cavities as an application of high importance.

C. Potratz, H.-W. Glock, U. van Rienen, F. Marhauser

2011-09-01T23:59:59.000Z

372

Design of method and mechanism for geothermal energy extraction  

Science Journals Connector (OSTI)

By drilling using a specially designed hydride carbide (melting point: 1,365°C) drill, we can drill the earth's crust to about 5 to 40 km to reach temperatures of 700 to 1,000°C, with minimum cost of the drill and drilling technology. Further, we can extract energy by pouring in water on an inserted carbide alloy vessel into the drilled well and bringing out as steam to drive the turbines. By this idea and drilling technology, we can meet out all the challenges faced by geothermal energy thereby providing most efficient renewable energy forever to all parts of the world especially to countries like India, etc., where there are no geothermal reservoirs at low cost. This drilling system produces both rotary and hammering action. This drilling system reduces the entire drill pipe weight. The drill pipe is supported by means of pneumatic cylinders for hammering action to the supports in the hole along the circumference. Thereby, the entire 17,000 T of the drill pipe weight for 15 kilometres is divided to the supports and each supports carry only approximately 2 T.

C. Balaji Krishna Kumar

2014-01-01T23:59:59.000Z

373

PARS II Data Extraction Utility Version 8.0.20130510 Release Notes  

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

PARS II Data Extraction Utility PARS II Data Extraction Utility Version 8.0.20130510 Release Notes The Department of Energy (DOE) is pleased to announce the newest version of the DOE PARS II Data Extraction Utility, version 8.0.20130510. The Extraction Utility is used for retrieving project management data from a variety of source systems for upload into the DOE Project Assessment and Reporting System (PARS II). This release is a minor update and incorporates a number of new features and updates primarily focused to improve the existing functionality. Specifically, this version includes enhancements for sites and contractors using Deltek COBRA 4X/5.0 for the Earned Value (EV) Management system to provide EV data to DOE via PARS II upload. The quality of each DOE PARS II Extraction Utility release is of primary consideration at the

374

Selective chelation and extraction of lanthanides and actinides with supercritical fluids  

SciTech Connect (OSTI)

This report is made up of three independent papers: (1) Supercritical Fluid Extraction of Thorium and Uranium with Fluorinated Beta-Diketones and Tributyl Phosphate, (2) Supercritical Fluid Extraction of Lanthanides with Beta-Diketones and Mixed Ligands, and (3) A Group Contribution Method for Predicting the Solubility of Solid Organic Compounds in Supercritical Carbon Dioxide. Experimental data are presented demonstrating the successful extraction of thorium and uranium using fluorinated beta-diketones to form stable complexes that are extracted with supercritical carbon dioxide. The conditions for extracting the lanthanide ions from liquid and solid materials using supercritical carbon dioxide are presented. In addition, the Peng-Robison equation of state and thermodynamic equilibrium are used to predict the solubilities of organic solids in supercritical carbon dioxide from the sublimation pressure, critical properties, and a centric factor of the solid of interest.

Brauer, R.D.; Carleson, T.E.; Harrington, J.D.; Jean, F.; Jiang, H.; Lin, Y.; Wai, C.M.

1994-01-01T23:59:59.000Z

375

Preparation and evaluation of coal extracts as precursors for carbon and graphite products  

SciTech Connect (OSTI)

A coal extraction process coupled with coal hydrotreatment has been shown capable of producing suitable precursors for a variety of commercially important carbon and graphite products. The N-methylpyrolidone (NMP) extracts of hydrotreated coals have been analytically and chemically characterized and shown to have properties acceptable for use as binder and impregnation pitch. Mesophase formation studies have demonstrated their capability for producing both needle and anode grade coke as well as precursors for mesophase pitch fibers. A graphite artifact has been produced using a coal extract as a binder and coke derived from the extract as a filler. Further evaluation of the extract materials is being carried out by industrial members of the Carbon Products Consortium.

Zondlo, J.W.; Stiller, A.W.; Stansberry, P.G. [West Virginia Univ., Morgantown, WV (United States)] [and others

1996-08-01T23:59:59.000Z

376

Evaluation of extractants and chelating resins in polishing actinide-contaminated waste streams  

SciTech Connect (OSTI)

At the Los Alamos National Laboratory Plutonium Facility, anion exchange is used for recovering plutonium from nitric acid solutions. Although this approach recovers >99%, the trace amounts of plutonium and other actinides remaining in the effluent require additional processing. We are doing research to develop a secondary unit operation that can directly polish the effluent so that actinide levels are reduced to below the maximum allowed for facility discharge. We selected solvent extraction, the only unit operation that can meet the stringent process requirements imposed; several carbonyl and phosphoryl extractants were evaluated and their performance characterized. We also investigated various engineering approaches for solvent extraction; the most promising was a chelating resin loaded with extractant. Our research now focuses on the synthesis of malonamides, and our goal is to bond these extractants to a resin matrix. 7 refs., 12 figs., 1 tab.

Schreiber, S.B.; Dunn, S.L.; Yarbro, S.L.

1991-06-01T23:59:59.000Z

377

Antihyperglycemic and antihyperlipidemic properties of aqueous root extract of Icacina senegalensis in alloxan induced diabetic rats  

Science Journals Connector (OSTI)

AbstractObjective To evaluate the antidiabetic and hypolipidemic activity of aqueous root extract of Icacina senegalensis (I. senegalensis) in alloxan-induced diabetic rats. Method Blood glucose levels of alloxan-induced diabetic rats were monitored after the administration of I. senegalensis extract (100, 200 and 400 mg/kg) to diabetic rats for 14 d. Different biochemical parameters, serum cholesterol, serum triglyceride, high density lipoprotein, low density lipoprotein and very low density lipoprotein were also examined. Results Treatment of alloxan diabetic rats with the extract showed significant (P<0.05) activity. The activity of the extract was comparable to that of the standard drug, glinbeclamide. Conclusions The results suggest that the root extract of I. senegalensis possesses antidiabetic and hypolipidemic properties, which might be a potential source for isolation of new orally active agent in the treatment of diabetes and its associated complications.

GC Akuodor; PM Udia; A Bassey; KC Chilaka; OA Okezie

2014-01-01T23:59:59.000Z

378

Extraction of actinides by multi-dentate diamides and their evaluation with computational molecular modeling  

SciTech Connect (OSTI)

Multi-dentate diamides have been synthesized and examined for actinide (An) extractions. Bi- and tridentate extractants are the focus in this work. The extraction of actinides was performed from 0.1-6 M HNO{sub 3} to organic solvents. It was obvious that N,N,N',N'-tetra-alkyl-diglycolamide (DGA) derivatives, 2,2'-(methylimino)bis(N,N-dioctyl-acetamide) (MIDOA), and N,N'-dimethyl-N,N'-dioctyl-2-(3-oxa-pentadecane)-malonamide (DMDOOPDMA) have relatively high D values (D(Pu) > 70). The following notable results using DGA extractants were obtained: (1) DGAs with short alkyl chains give higher D values than those with long alkyl chain, (2) DGAs with long alkyl chain have high solubility in n-dodecane. Computational molecular modeling was also used to elucidate the effects of structural and electronic properties of the reagents on their different extractabilities. (authors)

Sasaki, Y.; Kitatsuji, Y.; Hirata, M.; Kimura, T. [Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1195 (Japan); Yoshizuka, K. [The University of Kitakyushu, Wakamatsu, Kitakyushu, Fukuoka 808-0135 (Japan)

2008-07-01T23:59:59.000Z

379

Water-enhanced solubility of carboxylic acids in organic solvents and its applications to extraction processes  

SciTech Connect (OSTI)

The solubilities of carboxylic acids in certain organic solvents increase remarkably with an increasing amount of water in the organic phase. This phenomenon leads to a novel extract regeneration process in which the co-extracted water is selectively removed from an extract, and the carboxylic acid precipitates. This approach is potentially advantageous compared to other regeneration processes because it removes a minor component of the extract in order to achieve a large recovery of acid from the extract. Carboxylic acids of interest include adipic acid, fumaric acid, and succinic acid because of their low to moderate solubilities in organic solvents. Solvents were screened for an increase in acid solubility with increased water concentration in the organic phase. Most Lewis-base solvents were found to exhibit this increased solubility phenomena. Solvents that have a carbonyl functional group showed a very large increase in acid solubility. 71 refs., 52 figs., 38 tabs.

Starr, J.N.; King, C.J.

1991-11-01T23:59:59.000Z

380

Purification of a Water Extract of Chinese Sweet Tea Plant (Rubus suavissimus S. Lee) by Alcohol Precipitation  

Science Journals Connector (OSTI)

Purification of a Water Extract of Chinese Sweet Tea Plant (Rubus suavissimus S. Lee) by Alcohol Precipitation ... To purify this water extract for potential elevated bioactivity, an alcohol precipitation (AP) consisting of gradient regimens was applied, and its resultants were examined through colorimetric and HPLC analyses. ... Prior to performing alcohol precipitation of the aqueous extract samples, various extract-to-water ratios ranging from 1:4 w/v to 1:8 w/v were tested to determine the amount of precipitant (thus the reciprocal amount of the purified extract) caused by extract solubility itself. ...

Gar Yee Koh; Guixin Chou; Zhijun Liu

2009-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Extraction and Determination of Boron Isotopic Composition in Tourmalines  

Science Journals Connector (OSTI)

Tourmaline is an abundant boron-rich alumosilicate mineral with complex chemistry and rich in Fe, Mg, Al, Si elements. In this study, tourmaline samples were decomposed by alkali fusion method, and then the boron was separated and purified using three different procedures. It was found that both Fe3+ and Al3+ ions, rich in tourmaline samples seriously, which affected the accurate determination of boron concentration by Azomethine-H spectrophotometric method and also caused a loss of boron by specific adsorption when large amount of amorphous hydroxide precipitate formed in ion-exchange columns. The addition of small amount of EDTA can eliminate the influence, but brings serious isobaric interference on boron isotopic analysis by TIMS. Finally, a three-column ion-exchange procedure was established including the first mixed resin column, the peristaltic pump coupled boron specific resin column, and the second mixed resin column, which ensures the full recovery of boron (> 99%) from tourmaline samples with complex matrices. The PTIMS-Cs2BO2+-static double-collection method was established by selecting H3-H4 Faraday cups and optimizing parameters in Zoom Optics (Focus Quad: 15; Dispersion Quad: ?85) in a Triton TI mass spectrometer. The determined average 11B/10B value of NIST SRM 951 standard boron solution was 4.05044±0.00012 (2?, n = 8, 1 ?g B), which was superior to the dynamic collection method in internal/external precision. A ?11B value of ?0.3% for NIST SRM 951 through the same pretreatment procedure was obtained, indicating that there was no isotopic fractionation occurred during the extraction procedure. The comparison of boron isotopic compositions in natural samples by TIMS and MC-ICP-MS after the chemistry procedure indicated that ?11B values determined by the static PTIMS-Cs2BO2+ method were in good agreement with that by MC-ICP-MS.

Xiong YAN; Shao-Yong JIANG; Hai-Zhen WEI; Yan YAN; He-Pin WU; Wei PU

2012-01-01T23:59:59.000Z

382

Extracting Star Formation Histories from Medium-resolution Galaxy Spectra  

E-Print Network [OSTI]

We adapt an existing data compression algorithm, MOPED, to the extraction of median-likelihood star formation (SF) histories from medium-resolution galaxy spectra. By focusing on the high-pass components of galaxy spectra, we minimize potential uncertainties arising from the spectro-photometric calibration and intrinsic attenuation by dust. We validate our approach using model high-pass spectra of galaxies with different SF histories covering the wavelength range 3650-8500 A at a resolving power of about 2000. We show that the method can recover the full SF histories of these models, without prior knowledge of the metallicity, to within an accuracy that depends sensitively on signal-to-noise ratio. The investigation of the sensitivity of the flux at each wavelength to the mass fraction of stars of different ages allows us to identify new age-sensitive features in galaxy spectra. We also highlight a fundamental limitation in the recovery of the SF histories of galaxies for which the optical signatures of intermediate-age stars are masked by those of younger and older stars. We apply this method to derive average SF histories from the highest-quality spectra of morphologically identified early- and late-type galaxies in the SDSS EDR [...]. We also investigate the constraints set by the high-pass signal in the stacked spectra of a magnitude-limited sample of SDSS-EDR galaxies on the global SF history of the Universe. We confirm that the stellar populations in the most massive galaxies today appear to have formed on average earlier than those in the least massive ones. Our results do not support the recent suggestion of a statistically significant peak in the SF activity of the Universe at redshifts below unity, although such a peak is not ruled out [abridged].

Hugues Mathis; Stephane Charlot; Jarle Brinchmann

2005-11-08T23:59:59.000Z

383

Americium/curium extraction from a lanthanide borosilciate glass  

SciTech Connect (OSTI)

A solution containing kilogram quantities of highly radioactive isotopes of americium and curium (Am/Cm) and lanthanide fission products is currently stored in a process tank at the Department of Energy`s Savannah River Site (SRS). This tank and its vital support systems are old, subject to deterioration, and prone to possible leakage. For this reason, a program has been initiated to immobilize this material as a lanthanide borosilicate glass for safe long-term storage. The Am/Cm has commercial value and is desired for use by the heavy isotope programs at the Oak Ridge National Laboratory (ORNL). Therefore, a flowsheet was demonstrated using a curium-containing glass to extract these elements from the glass matrix. The method involved grinding the glass to less than 200 mesh and dissolving in concentrated nitric acid at 110{degrees}C. Under these conditions, the dissolution was essentially 100% after 2 hours except for silicon which remained mostly insoluble. Since the actual process conditions at ORNL could not be exactly simulated, the dissolution rate of a surrogate glass was measured using static and agitated conditions to bracket the expected rate. The measured rates, 0.040 to 0.0082 grams/hour-centimeter, were constant which allowed development of a predictive model for the time required to dissolve a glass particle of spherical geometry in terms of the glass density, particle size, and experimentally measured rate. The calculated time required to dissolve an idealized curium glass particle was in agreement with the experimental observation that dissolution was complete in less than 2 hours.

Rudisill, T.S.; Pareizs, J.M.; Ramsey, W.G.

1996-12-31T23:59:59.000Z

384

The setup of an extraction system coupled to a hydrogen isotopes distillation column  

SciTech Connect (OSTI)

Among the most difficult problems of cryogenic distillation one stands apart: the extraction of the heavy fraction. By an optimal design of the cycle scheme, this problem could be avoided. A 'worst case scenario' is usually occurring when the extracted fraction consists of one prevalent isotope such as hydrogen and small amounts of the other two hydrogen isotopes (deuterium and/or tritium). This situation is further complicated by two parameters of the distillation column: the extraction flow rate and the hold-up. The present work proposes the conceptual design of an extraction system associated to the cryogenic distillation column used in hydrogen separation processes. During this process, the heavy fraction (DT, T{sub 2}) is separated, its concentration being the highest at the bottom of the distillation column. From this place the extraction of the gaseous phase can now begin. Being filled with adsorbent, the extraction system is used to temporarily store the heavy fraction. Also the extraction system provides samples for the gas Chromatograph. The research work is focused on the existent pilot plant for tritium and deuterium separation from our institute to validate the experiments carried out until now. (authors)

Zamfirache, M.; Bornea, A.; Stefanescu, I.; Bidica, N.; Balteanu, O.; Bucur, C. [INC-DTCI, ICSIRm. Valcea, Uzinei Street 4, Rm. Valcea (Romania)

2008-07-15T23:59:59.000Z

385

Supercritical fluid extraction of lanthanides with fluorinated [beta]diketones and tributyl phosphate  

SciTech Connect (OSTI)

Trivalent lanthanide ions (La[sup 3+], Eu[sup 3+], and Lu[sup 3+]) in solid materials can be effectively extracted by methanol-modified carbon dioxide containing a suitable fluorinated [beta]-diketone (such as HFA, TTA, or FOD) at 60[degree]C and 150 atm. Addition of a small amount of water to the solid samples can significantly increase the extraction efficiency. Tributyl phosphate (TBP) shows a strong positive synergistic effect with the fluorinated [beta]-diketones for the extraction of the lanthanides in supercritical CO[sub 2] without methanol modifier. Quantitative extraction of the lanthanides (92-98%) from sand or a cellulose-based solid material can be achieved using a mixture of TBP and one of the fluorinated [beta]-diketones in neat CO[sub 2] at 60[degree]C and 150 atm. The synergistic effect depends on the structure and fluorine substitution in the [beta]-diketone. In soil matrix, TBP+HFA are more effective than TBP+TTA or TBP+FOD for lanthanide extraction in supercritical CO[sub 2]. Without fluorine substitution, as in the case of acetylacetone, the positive synergistic extraction of lanthanides with TBP is negligible. With the mixed-ligand approach, high efficiencies of lanthanide extraction from aqueous solutions by neat CO[sub 2] can also be accomplished. 14 refs., 4 tabs.

Lin, Y.; Wai, C.M. (Univ. of Idaho, Moscow, ID (United States))

1994-07-01T23:59:59.000Z

386

Influence of Contact Time on the Extraction of 233Uranyl Spike and Contaminant Uranium From Hanford Sediment  

SciTech Connect (OSTI)

In this study 233Uranyl nitrate was added to uranium (U) contaminated Hanford 300 Area sediment and incubated under moist conditions for 1 year. It hypothesized that geochemical transformations and/or physical processes will result in decreased extractability of 233U as the incubation period increases, and eventually the extraction behavior of the 233U spike will be congruent to contaminant U that has been associated with sediment for decades. Following 1 week, 1 month, and 1 year incubation periods, sediment extractions were performed using either batch or dynamic (sediment column flow) chemical extraction techniques. Overall, extraction of U from sediment using batch extraction was less complicated to conduct compared to dynamic extraction, but dynamic extraction could distinguish the range of U forms associated with sediment which are eluted at different times.

Smith, Steven C.; Szecsody, James E.

2011-11-01T23:59:59.000Z

387

Role of vanadium pentoxide hole-extracting nanolayer in rubrene/C70-based small molecule organic solar cells  

Science Journals Connector (OSTI)

Vanadium pentoxide (V2O5) was inserted between the donor layer and the anode as a hole-extracting nanolayer. Compared with devices without a hole-extracting layer, short-circuit current density (JSC), open-circuit ...

Zhen Zhan, Jing Cao, Weiguang Xie, Lintao Hou, Qin Ye, Pengyi Liu

2014-01-01T23:59:59.000Z

388

Solvent extraction of uranyl (II) ion with N,N,N,N-tetrabutylsucinylamide from nitric acid solution  

Science Journals Connector (OSTI)

N,N,N,N-tetrabutylsuccinylamide (TBSA) in a diluent composed of 50% trimethylbenzene (TMB) and 50% kerosene (OK) can extract uranyl (II) ion from nitric acid solution. The results of extraction study suggested...

You-Shao Wang; Chao-Hong Shen; Jian-Kang Zhu…

1996-01-20T23:59:59.000Z

389

Study of solid extractants based on malonamides, diglycolamides, and bipyridines for the partitioning of minor actinides from high active wastes  

Science Journals Connector (OSTI)

In this work, the performance of the solid extractants with polyacrylonitrile (PAN) binding matrix was studied for the separation of lanthanides and actinides from nitric acid solutions. As extractants, incorp...

J. Šul’aková; J. John; F. Šebesta

2006-01-01T23:59:59.000Z

390

Study of solid extractants based on malonamides, diglycolamides, and bipyridines for the partitioning of minor actinides from high active wastes  

Science Journals Connector (OSTI)

In this work, the performance of the solid extractants with polyacrylonitrile (PAN) binding matrix was studied for the separation of lanthanides and actinides from nitric acid solutions. As extractants, incorp...

J. Šul’aková; J. John; F. Šebesta

2006-12-01T23:59:59.000Z

391

Evaluation of air injection and extraction tests in a landfill site in Korea: implications for landfill management  

Science Journals Connector (OSTI)

Air extraction and injection were evaluated for extracting hazardous landfill gas and enhancing degradation of organic materials in a landfill in Korea. From the pilot and full ... pressure radius of influence wa...

J. Lee; C. Lee; K. Lee

2002-11-01T23:59:59.000Z

392

Antitumor Activity of Ethanol Extract from Hippophae Rhamnoides L. Leaves towards Human Acute Myeloid Leukemia Cells In Vitro  

Science Journals Connector (OSTI)

We studied the effects of ethanol extract from Hippophae rhamnoides L. leaves on the growth and differentiation of human acute myeloid leukemia cells (KG-1a, HL60, and U937). The extract of Hippophae rhamnoides L...

G. T. Zhamanbaeva; M. K. Murzakhmetova…

2014-11-01T23:59:59.000Z

393

Pseudophasic extraction method for the separation of ultra-fine minerals  

DOE Patents [OSTI]

An improved aqueous-based extraction method for the separation and recovery of ultra-fine mineral particles. The process operates within the pseudophase region of the conventional aqueous biphasic extraction system where a low-molecular-weight, water soluble polymer alone is used in combination with a salt and operates within the pseudo-biphase regime of the conventional aqueous biphasic extraction system. A combination of low molecular weight, mutually immiscible polymers are used with or without a salt. This method is especially suited for the purification of clays that are useful as rheological control agents and for the preparation of nanocomposites.

Chaiko, David J. (Naperville, IL)

2002-01-01T23:59:59.000Z

394

Disagreement between capture probabilities extracted from capture and quasi-elastic backscattering excitation functions  

E-Print Network [OSTI]

Experimental quasi-elastic backscattering and capture (fusion) excitation functions are usually used to extract the s-wave capture probabilities for the heavy-ion reactions. We investigated the $^{16}$O+$^{120}$Sn,$^{144}$Sm,$^{208}$Pb systems at energies near and below the corresponding Coulomb barriers and concluded that the probabilities extracted from quasi-elastic data are much larger than the ones extracted from fusion excitation functions at sub and deep-sub barrier energies. This seems to be a reasonable explanation for the known disagreement observed in literature for the nuclear potential diffuseness derived from both methods.

V. V. Sargsyan; G. G. Adamian; N. V. Antonenko; R. P. S. Gomes

2014-06-05T23:59:59.000Z

395

Extraction and analysis of neuron firing signals from deep cortical video microscopy  

SciTech Connect (OSTI)

We introduce a method for extracting and analyzing neuronal activity time signals from video of the cortex of a live animal. The signals correspond to the firing activity of individual cortical neurons. Activity signals are based on the changing fluorescence of calcium indicators in the cells over time. We propose a cell segmentation method that relies on a user-specified center point, from which the signal extraction method proceeds. A stabilization approach is used to reduce tissue motion in the video. The extracted signal is then processed to flatten the baseline and detect action potentials. We show results from applying the method to a cortical video of a live mouse.

Kerekes, Ryan A [ORNL; Blundon, Jay [St. Jude Children's Research Hospital

2014-01-01T23:59:59.000Z

396

Review and evaluation of extractants for strontium removal using magnetically assisted chemical separation  

SciTech Connect (OSTI)

A literature review on extractants for strontium removal was initially performed at Northern Illinois University to assess their potential in magnetically assisted chemical separation. A series of potential strontium extractants was systematically evaluated there using radioanalytical methods. Initial experiments were designed to test the uptake of strontium from nitric acid using several samples of magnetic extractant particles that were coated with various crown ether ligands. High partition coefficient (K{sub d}) values for stimulant tank waste were obtained. Further studies demonstrated that the large partitioning was due to uncoated particles.

Bauer, C.B.; Rogers, R.D. [Northern Illinois Univ., De Kalb, IL (United States). Dept. of Chemistry; Nunez, L.; Ziemer, M.D.; Pleune, T.T.; Vandegrift, G.F. [Argonne National Lab., IL (United States)

1995-11-01T23:59:59.000Z

397

Fast-extraction modulators for Los Alamos Scientific LaboratorY Proton Storage Ring  

SciTech Connect (OSTI)

The development of a short-bunch mode fast-extraction modulator for the LASL proton storage ring has made necessary the design and development of a resonant transformer charging circuit and the design of a new FIB line circuit to provide bipolar pulse outputs with low prepulse, postpulse, and an optimum high-voltage switch environments. The systems are now being developed to operate reliably at the high-average powers required. The short-bunch mode fast-extraction modulator prototype is presently operating. The initial construction of the long-bunch mode fast-extraction modulator prototype is under way, with results expected within the year.

Nunnally, W.C.; Hudgings, D.W.; Sarjeant, W.J.

1980-01-01T23:59:59.000Z

398

Method for extracting metals from aqueous waste streams for long term storage  

DOE Patents [OSTI]

A liquid--liquid extraction method for removing metals and hydrous metal colloids from waste streams is provided wherein said waste streams are contacted with a solvent system containing a water-in-oil microemulsion wherein the inverted micelles contain the extracted metal. A silicon alkoxide, either alone or in combination with other metal alkoxide compounds is added to the water-in-oil microemulsion, thereby allowing encapsulation of the extracted metal within a silicon oxide network. Lastly, the now-encapsulated metal is precipitated from the water-in-oil microemulsion phase to yield aggregates of metal-silicate particles having average individual particle sizes of approximately 40 nanometers.

Chaiko, David J. (Woodridge, IL)

1995-01-01T23:59:59.000Z

399

Extraction of design rules from multi-objective design exploration (MODE) using rough set theory  

Science Journals Connector (OSTI)

Multi-objective design exploration (MODE) and its application for design rule extraction are presented. MODE reveals the structure of design space from the trade-off information. The self-organizing map (SOM) is incorporated into MODE as a visual data-mining tool for design space. SOM divides the design space into clusters with specific design features. The sufficient conditions for belonging to a cluster of interest are extracted using rough set theory. The resulting MODE was applied to the multidisciplinary wing design problem, which revealed a cluster of good designs, and we extracted the design rules of such designs successfully.

Shigeru Obayashi

2011-01-01T23:59:59.000Z

400

Method for extracting metals from aqueous waste streams for long term storage  

DOE Patents [OSTI]

A liquid-liquid extraction method for removing metals and hydrous metal colloids from waste streams is provided wherein said waste streams are contacted with a solvent system containing a water-in-oil microemulsion wherein the inverted micelles contain the extracted metal. A silicon alkoxide, either alone or in combination with other metal alkoxide compounds is added to the water-in-oil microemulsion, thereby allowing encapsulation of the extracted metal within a silicon oxide network. Lastly, the now-encapsulated metal is precipitated from the water-in-oil microemulsion phase to yield aggregates of metal-silicate particles having average. individual particle sizes of approximately 40 manometers.

Chaiko, D.J.

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Selective enrichment of phenols from coal liquefaction oil by solid phase extraction method  

SciTech Connect (OSTI)

This study focuses on the solid phase extraction method for the enrichment and separation of phenol from coal liquefaction oil. The phenols' separation efficiency was compared on different solid phase extraction (SPE) cartridges, and the effect of solvents with different polarity and solubility parameter on amino-bonded silica was compared for selection of optimal elution solution. The result showed that amino-bonded silica has the highest selectivity and best extraction capability due to two factors, weak anion exchange adsorption and polar attraction adsorption.

Tian, M.; Feng, J. [Taiyuan University of Technoloy, Taiyuan (China)

2009-07-01T23:59:59.000Z

402

Chemical Composition of the Organic Matter of Oil Shale (Kerogen-70) from Leningrad Oblast (Benzene-Ethanol Extract)  

Science Journals Connector (OSTI)

Detailed data are reported on the chemical composition of the benzene-ethanol extract of oil shale (kerogen-70).

V. V. Platonov; V. A. Proskuryakov; A. V. Glybina

2002-03-01T23:59:59.000Z

403

Extracting particle freeze-out phase-space densities and entropies from sources imaged in heavy-ion reactions  

E-Print Network [OSTI]

introduced by Brown and Danielewicz 7,8 , allows one to extract the space-averaged phase-space density

Bertsch George F.

404

Membrane contactor assisted water extraction system for separating hydrogen peroxide from a working solution, and method thereof  

DOE Patents [OSTI]

The present invention relates to a membrane contactor assisted extraction system and method for extracting a single phase species from multi-phase working solutions. More specifically one preferred embodiment of the invention relates to a method and system for membrane contactor assisted water (MCAWE) extraction of hydrogen peroxide (H.sub.2O.sub.2) from a working solution.

Snyder, Seth W. (Lincolnwood, IL); Lin, Yupo J. (Naperville, IL); Hestekin' Jamie A. (Fayetteville, AR); Henry, Michael P. (Batavia, IL); Pujado, Peter (Kildeer, IL); Oroskar, Anil (Oak Brook, IL); Kulprathipanja, Santi (Inverness, IL); Randhava, Sarabjit (Evanston, IL)

2010-09-21T23:59:59.000Z

405

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis flavicarpa) with citric acid by using  

E-Print Network [OSTI]

Optimization of extraction of high-ester pectin from passion fruit peel (Passiflora edulis for extraction of high-ester yellow passion fruit pectin. Ã? 2007 Elsevier Ltd. All rights reserved. Keywords: Pectin extraction; Passion fruit peel; Degree of esterification; Response surface methodology; Central

Ferreira, Márcia M. C.

406

Development of a process for the extraction of {sup 137}Cs from acidic HLLW based on crown-calix extractant use of di-alkylamide modifier  

SciTech Connect (OSTI)

Within the framework of the ARTIST project of total fuel retreatment with ecological mixtures of solvents and extractants containing only C, H, O, and N atoms, a process segment of extraction of {sup 137}Cs from acidic stream was developed. The process with 25,27-Bis(1-octyloxy)calix[4]arene-crown- 6, DOC[4]C6, dissolved at its 0.01 M concentration in a mixture of 90 vol % 1-octanol and 10% dihexyl octanamide, DHOA was proposed as a viable variant due to its good multicycle performance, even with irradiated solvent, and due to the good chemical stability of the chosen combination of solvent mixture. (authors)

Alexova, J.; Sirova, M.; Rais, J. [Nuclear Research Institute Rez plc, 25068 Rez (Czech Republic); Suzuki, S.; Hirata, M.; Kimura, T. [Japan Atomic Energy Agency, Tokai-mura, Ibaraki (Japan); Tachimori, S. [Secretariat of the Nuclear Safety Commission of Japan, Tokyo (Japan)

2008-07-01T23:59:59.000Z

407

Identification of threats using linguistics-based knowledge extraction.  

SciTech Connect (OSTI)

One of the challenges increasingly facing intelligence analysts, along with professionals in many other fields, is the vast amount of data which needs to be reviewed and converted into meaningful information, and ultimately into rational, wise decisions by policy makers. The advent of the world wide web (WWW) has magnified this challenge. A key hypothesis which has guided us is that threats come from ideas (or ideology), and ideas are almost always put into writing before the threats materialize. While in the past the 'writing' might have taken the form of pamphlets or books, today's medium of choice is the WWW, precisely because it is a decentralized, flexible, and low-cost method of reaching a wide audience. However, a factor which complicates matters for the analyst is that material published on the WWW may be in any of a large number of languages. In 'Identification of Threats Using Linguistics-Based Knowledge Extraction', we have sought to use Latent Semantic Analysis (LSA) and other similar text analysis techniques to map documents from the WWW, in whatever language they were originally written, to a common language-independent vector-based representation. This then opens up a number of possibilities. First, similar documents can be found across language boundaries. Secondly, a set of documents in multiple languages can be visualized in a graphical representation. These alone offer potentially useful tools and capabilities to the intelligence analyst whose knowledge of foreign languages may be limited. Finally, we can test the over-arching hypothesis--that ideology, and more specifically ideology which represents a threat, can be detected solely from the words which express the ideology--by using the vector-based representation of documents to predict additional features (such as the ideology) within a framework based on supervised learning. In this report, we present the results of a three-year project of the same name. We believe these results clearly demonstrate the general feasibility of an approach such as that outlined above. Nevertheless, there are obstacles which must still be overcome, relating primarily to how 'ideology' should be defined. We discuss these and point to possible solutions.

Chew, Peter A.

2008-09-01T23:59:59.000Z

408

Algorithms and Software Tools for Extracting Coastal Morphological Information from Airborne LiDAR Data  

E-Print Network [OSTI]

coastal forms and processes. This research aims at developing algorithms for automatically extracting coastal morphological information from LiDAR data. The primary methods developed by this research include automated algorithms for beach profile feature...

Gao, Yige

2010-07-14T23:59:59.000Z

409

A divide-and-conquer method for 3D capacitance extraction  

E-Print Network [OSTI]

This thesis describes a divide-and-conquer algorithm to improve the 3D boundary element method (BEM) for capacitance extraction. We divide large interconnect structures into small sections, set new boundary conditions using the borderfor each...

Yu, Fangqing

2004-09-30T23:59:59.000Z

410

Extraction of catechin compounds from green tea with a new green solvent  

Science Journals Connector (OSTI)

An emerging green solvent called a deep eutectic solvent(DES) was applied to the extraction and ... and (?)epigallocatechin gallate(EGCG) from Chinese green tea. After evaluating different combinations of them .....

Heng Zhang; Baokun Tang; Kyungho Row

2014-02-01T23:59:59.000Z

411

Context Thesaurus for the Extraction of Metadata from Medical Research Papers  

E-Print Network [OSTI]

B3H 1W5 {shepherd | watters @cs.dal.ca} Abstract Much of the academic literature availableContext Thesaurus for the Extraction of Metadata from Medical Research Papers Michael Shepherd

Shepherd, Mike

412

Impact of Green Tea Extract and Fungal Alpha-Amylase on Dough Proofing and Steaming  

Science Journals Connector (OSTI)

Green tea extract (GTE) was fortified into steamed bread as a functional ingredient to enhance its nutritional values. However, GTE might inhibit ?-amylase activity and interact with gluten proteins, causing ... ...

Victoria K. Ananingsih; Jing Gao; Weibiao Zhou

2013-12-01T23:59:59.000Z

413

Supercritical Fluid Extraction as a Cleanup Technique for Gas Chromatographic Analysis of Pesticides in Wool Wax  

Science Journals Connector (OSTI)

Supercritical Fluid Extraction as a Cleanup Technique for Gas Chromatographic Analysis of Pesticides in Wool Wax ... Wool wax is the lipid secreted by the sebaceous glands of sheep and is recovered during the scouring of raw wool. ...

F. William Jones

1997-07-16T23:59:59.000Z

414

Mutagenicity of diesel exhaust particle extracts: Influence of non-petroleum fuel extenders  

Science Journals Connector (OSTI)

The mutagenicity of dichloromethane extracts of diesel participate exhaust, collected while the engine was running at steady state on diesel fuel alone was higher than when 10% ... in higher estimates of mutageni...

Charles R. Clark Ph.D.; Roger O. McClellan…

1982-11-01T23:59:59.000Z

415

Supercritical fluid extraction of Chinese Maoming oil shale with water and toluene  

Science Journals Connector (OSTI)

Chinese Maoming (Guangdong Province) oil shale was subjected to supercritical fluid extraction with ... water, although the weight losses of the oil shale with toluene and water were almost the...n-alkanes were a...

T Funazukuri; N Wakao

1987-04-01T23:59:59.000Z

416

E-Print Network 3.0 - aqueous fish extract Sample Search Results  

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

Powered by Explorit Topic List Advanced Search Sample search results for: aqueous fish extract Page: << < 1 2 3 4 5 > >> 1 A NOTE ON THE ESTIMATION OF TRIMETHYLAMINE IN FISH...

417

Named Entity Extraction with Conditional Markov Models and Classifiers Martin Jansche  

E-Print Network [OSTI]

Named Entity Extraction with Conditional Markov Models and Classifiers Martin Jansche Department of Linguistics The Ohio State University Columbus, OH 43210, USA jansche.1@osu.edu 1 Introduction Our approach

418

Automated Information Extraction to Support Biomedical Decision Model Construction: A Preliminary Design  

E-Print Network [OSTI]

We propose an information extraction framework to support automated construction of decision models in biomedicine. Our proposed technique classifies text-based documents from a large biomedical literature repository, e.g., ...

Li, Xiaoli

419

The evaluation of CO2-based vapour extraction (VAPEX) process for heavy-oil recovery  

Science Journals Connector (OSTI)

Vapor extraction (VAPEX) has been proposed as an alternative for heavy-oil recovery in reservoirs where thermal methods face technical and economic problems. In VAPEX, a pair of horizontal injector-producer we...

Farshid Torabi; Benyamin Yadali Jamaloei…

2012-07-01T23:59:59.000Z

420

Pseudophakic glaucoma and vision loss after clear lens extraction for high myopia  

Science Journals Connector (OSTI)

A myopic 44-year-old man was treated with bilateral clear lens extraction and posterior chamber intraocular lens implantation. A year later, the patient noted decreased vision in the right eye and was diagnose...

John S. King MD; W. Brad Priester MD; Peter A. Netland MD; PhD

2004-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

E-Print Network 3.0 - americana aqueous extracts Sample Search...  

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

Johnston Lab, November 2003 1 Extraction Obtain 30 healthy... and PrecipitationResuspension Wash with 150mL Phenol (tris-buffered) Transfer aqueous (top) layer to new...

422

Extraction of Uranium from Seawater: Design and Testing of a Symbiotic System  

E-Print Network [OSTI]

Uranium present in low concentration in ocean water has the potential to greatly augment the current fuel reserve for nuclear power generation, but the challenge of extracting it economically remains. Two new designs of ...

Wu, You

423

Extracting and Displaying Temporal and Geospatial Entities from Articles on Historical Events  

Science Journals Connector (OSTI)

......historical events, such as those describing wars, battles and invasions. We focus on extracting major events...problem is found primarily in articles about naval battles, like the Battle of Midway article. We also find that Google Geocoder has......

Rachel Chasin; Daryl Woodward; Jeremy Witmer; Jugal Kalita

2014-03-01T23:59:59.000Z

424

An RF-only ion-funnel for extraction from high-pressure gases  

E-Print Network [OSTI]

An RF ion-funnel technique has been developed to extract ions from a high-pressure (10 bar) noble-gas environment into vacuum ($10^{-6}$ mbar). Detailed simulations have been performed and a prototype has been developed for the purpose of extracting $^{136}$Ba ions from Xe gas with high efficiency. With this prototype, ions have been extracted for the first time from high-pressure xenon gas and argon gas. Systematic studies have been carried out and compared to the simulations. This demonstration of extraction of ions with mass comparable to that of the gas generating the high-pressure into vacuum has applications to Ba tagging from a Xe-gas time-projection chamber (TPC) for double beta decay as well as to the general problem of recovering trace amounts of an ionized element in a heavy (m$>40$ u) carrier gas.

Thomas Brunner; Daniel Fudenberg; Victor Varentsov; Amanda Sabourov; Giorgio Gratta; Jens Dilling; Ralph DeVoe; David Sinclair; William Fairbank Jr.; Joshua B Albert; David J Auty; Phil S Barbeau; Douglas Beck; Cesar Benitez-Medina; Martin Breidenbach; Guofu F Cao; Christopher Chambers; Bruce Cleveland; Matthew Coon; Adam Craycraft; Timothy Daniels; Sean J Daugherty; Tamar Didberidze; Michelle J Dolinski; Matthew Dunford; Lorenzo Fabris; Jacques Farine; Wolfhart Feldmeier; Peter Fierlinger; Razvan Gornea; Kevin Graham; Mike Heffner; Mitchell Hughes; Michael Jewell; Xiaoshan S Jiang; Tessa N Johnson; Sereres Johnston; Alexander Karelin; Lisa J Kaufman; Ryan Killick; Thomas Koffas; Scott Kravitz; Reiner Kruecken; Alexey Kuchenkov; Krishna S Kumar; Douglas S Leonard; Francois Leonard; Caio Licciardi; Yi-Hsuan H Lin; Jiajie Ling; Ryan MacLellan; Michael G Marino; Brian Mong; David Moore; Allen Odian; Igor Ostrovskiy; Christian Ouellet; Andreas Piepke; Andrea Pocar; Fabrice Retiere; Peter C Rowson; Maria P Rozo; Alexis Schubert; Erica Smith; Victor Stekhanov; Michal Tarka; Tamer Tolba; Delia Tosi; Karl Twelker; Jean-Luc L Vuilleumier; Josiah Walton; Timothy Walton; Manuel Weber; Liangjian J Wen; Ubi Wichoski; Liang Yang; Yung-Ruey Yen

2014-12-03T23:59:59.000Z

425

The developmental impact of China's investment in South America's extractive industries.  

E-Print Network [OSTI]

???This thesis examines the developmental impact of Chinese state-owned enterprises’ (SOEs) increasing engagement in the South American extractive sector since the 1990s. To do so,… (more)

Gonzalez Vicente, Ruben

2009-01-01T23:59:59.000Z

426

Southern Blot Analysis of DNA Extracted from Formalin-fixed Pathology Specimens  

Science Journals Connector (OSTI)

...vast archives of material available in pa thology...Southern blot analyses. MATERIALS AND METHODS Source and Handling of Tissue. Fresh...DIALYZE Fig. 1. Flow diagram for extraction of...This unspoolable material was not suitablefor...

Louis Dubeau; Lois A. Chandler; Julie R. Gralow; Peter W. Nichols; and Peter A. Jones

1986-06-01T23:59:59.000Z

427

Rotating disk sorptive extraction of triclosan and methyl-triclosan from water samples  

Science Journals Connector (OSTI)

A method of sample preparation based on use of rotating disk sorptive extraction (RDSE) has been developed for determination of triclosan (TCS) and methyl-triclosan (MTCS) in water samples. The sorptive...w/v), d...

Lourdes Jachero; Betsabet Sepúlveda; Inés Ahumada…

2013-09-01T23:59:59.000Z

428

Limitations of a laboratory robot for extracting available nutrients from soil  

Science Journals Connector (OSTI)

The use of a laboratory robot has been investigated for the extraction of soil samples prior to their analysis for available nutrients. Of critical importance is the effciency with which the soil is mixed wit...

N. Brenes; A.M. Bunnell; P.A. Langan…

1996-01-01T23:59:59.000Z

429

Effective Supervised Knowledge Extraction for an mHealth System for Fall Detection  

Science Journals Connector (OSTI)

Fall detection is an important task in telemedicine. In this paper an approach based on supervised knowledge extraction is presented. A fall recordings database is analyzed offline and a set of IF...THEN rules...

G. Sannino; I. De Falco; G. De Pietro

2014-01-01T23:59:59.000Z

430

Removal of residual uranium in simulated radwaste solution by TBP extraction  

SciTech Connect (OSTI)

The extraction behavior of uranium in a multicomponent system simulated on the basis of high-level liquid waste was examined in order to find effective conditions for the removal of residual uranium in a simulated radwaste solution by the TBP solvent extraction method. While the conventional semiempirical equation for the distribution coefficient of uranium could be used in a system composed of only uranium and nitric acid, it was found to be unsuitable for a multicomponent system where the concentration of uranium is not dominant. Uranium extractability by TBP was found to be limited in multicomponents systems regardless of high TBP concentration, phase ratio, and extraction times because of the presence of neodymium and iron together with uranium in the systems.

Kim, Kwang-Wook; Lee, Eil-Hee; Shin, Young-Joon [Korea Atomic Energy Research Institute, Taejon (Korea, Republic of)] [and others

1995-10-01T23:59:59.000Z

431

Extraction of Uranium from Aqueous Solutions Using Ionic Liquid and Supercritical Carbon Dioxide in Conjunction  

SciTech Connect (OSTI)

Uranyl ions (UO2)2+ in aqueous nitric acid solutions can be extracted into supercritical CO2 (sc-CO2) via an imidazolium-based ionic liquid using tri-n-butylphosphate (TBP) as a complexing agent. The transfer of uranium from the ionic liquid to the supercritical fluid phase was monitored by UV/Vis spectroscopy using a high-pressure fiberoptic cell. The form of the uranyl complex extracted into the supercritical CO2 phase was found to be UO2(NO3)2(TBP)2. The extraction results were confirmed by UV/Vis spectroscopy and by neutron activation analysis. This technique could potentially be used to extract other actinides for applications in the field of nuclear waste management.

Wang, Joanna S.; Sheaff, Chrystal N.; Yoon, Byunghoon; Addleman, Raymond S.; Wai, Chien M.

2009-01-01T23:59:59.000Z

432

A thermodynamic model of nitric acid extraction by tri-n-butyl phosphate  

SciTech Connect (OSTI)

A thermodynamic model is presented for nitric acid extraction by tri-n-butyl phosphate (TBP). This model is based on the formation of the organic phase species: TBP.HNO/sub 3/ and (TBP)/sub 2/.HNO/sub 3/. The model works successfully at TBP concentrations of 5 to 100 vol% and was found to be effective at predicting the extraction of HNO/sub 3/ from HNO/sub 3//NaNO/sub 3/ and HNO/sub 3//LiNO/sub 3/ solutions. Within the TBP concentration range of 5 to 30%, a single set of extraction constants was sufficient to fit extraction data. Stoichiometric activity coefficients of nitric acid in HNO/sub 3//NaNO/sub 3/ and HNO/sub 3//LiNO/sub 3/ mixtures were calculated using a model developed by Bromley.

Chaiko, D.J.; Vandegrift, G.F.

1988-07-01T23:59:59.000Z

433

Design of a press for oil extraction from moringa seeds for Haiti  

E-Print Network [OSTI]

The project here presented focuses on the development of a harvesting tool for Haiti, a developing country, for the extraction of oil from the seeds of the moringa trees. Moringas have an extraordinarily nutritional potential ...

Sabelli, Alessandra Maria, 1976-

2004-01-01T23:59:59.000Z

434

The Extraction?Flocculation Re-refining Lubricating Oil Process Using Ternary Organic Solvents  

Science Journals Connector (OSTI)

The Extraction?Flocculation Re-refining Lubricating Oil Process Using Ternary Organic Solvents ... Res., 1997, 36 (9), ... Waste lubricating oils may be re-refined with organic solvents that dissolve base oil and segregate the additives and solid particles. ...

J. P. Martins

1997-09-02T23:59:59.000Z

435

Management of NORM-containing processing residuals from hydrocarbons extraction and treatment plants  

Science Journals Connector (OSTI)

......quantity of waste produced...1995, integrated and corrected...model for treatment, storage...and Display System (READY...extraction and treatment plants. | Eni...Industrial Waste 0 Radioisotopes...prevention & control Industry......

F. Devecchi; G. Colombo; R. Fresca Fantoni; S. De Zolt; F. Trotti; C. Zampieri

2009-12-01T23:59:59.000Z

436

Efficient numerical methods for capacitance extraction based on boundary element method  

E-Print Network [OSTI]

algorithms based on boundary element methods (BEM) and to compute the capacitance extraction in the presence of floating dummy conductors. We propose the PHiCap algorithm, which is based on a hierarchical refinement algorithm and the wavelet transform. Unlike...

Yan, Shu

2006-04-12T23:59:59.000Z

437

Pore-Water Extraction Scale-Up Study for the SX Tank Farm  

SciTech Connect (OSTI)

The phenomena related to pore-water extraction from unsaturated sediments have been previously examined with limited laboratory experiments and numerical modeling. However, key scale-up issues have not yet been addressed. Laboratory experiments and numerical modeling were conducted to specifically examine pore-water extraction for sediment conditions relevant to the vadose zone beneath the SX Tank Farm at Hanford Site in southeastern Washington State. Available SX Tank Farm data were evaluated to generate a conceptual model of the subsurface for a targeted pore-water extraction application in areas with elevated moisture and Tc-99 concentration. The hydraulic properties of the types of porous media representative of the SX Tank Farm target application were determined using sediment mixtures prepared in the laboratory based on available borehole sediment particle size data. Numerical modeling was used as an evaluation tool for scale-up of pore-water extraction for targeted field applications.

Truex, Michael J.; Oostrom, Martinus; Wietsma, Thomas W.; Last, George V.; Lanigan, David C.

2013-01-15T23:59:59.000Z

438

Extraction agents for the removal of polycyclic aromatic hydrocarbons (PAHs) from soil in soil washing technologies  

Science Journals Connector (OSTI)

Abstract Polycyclic aromatic hydrocarbons (PAHs) in soil have been recognised as a serious health and environmental issue due to their carcinogenic, mutagenic and teratogenic properties. One of the commonly employed soil remediation techniques to clean up such contamination is soil washing or solvent extraction. The main factor which governs the efficiency of this process is the solubility of \\{PAHs\\} in the extraction agent. Past field-scale soil washing treatments for PAH-contaminated soil have mainly employed organic solvents or water which is either toxic and costly or inefficient in removing higher molecular weight PAHs. Thus, the present article aims to provide a review and discussion of the alternative extraction agents that have been studied, including surfactants, biosurfactants, microemulsions, natural surfactants, cyclodextrins, vegetable oil and solution with solid phase particles. These extraction agents have been found to remove \\{PAHs\\} from soil at percentages ranging from 47 to 100% for various PAHs.

Ee Von Lau; Suyin Gan; Hoon Kiat Ng; Phaik Eong Poh

2014-01-01T23:59:59.000Z

439

Complex tool sets for honey extraction among chimpanzees in Loango National Park, Gabon  

E-Print Network [OSTI]

Complex tool sets for honey extraction among chimpanzees in Loango National Park, Gabon Christophe. However, new observations on complex tool use by the chimpanzees of Loango National Park, Gabon, expand

440

Recent International R&D Activities in the Extraction of Uranium from Seawater  

E-Print Network [OSTI]

41. H. G. Bals, Uranium extraction from seawater. INIS.Report (1976), (INIS-mf-3844), 149 pp.From: INIS Atomindex 1977, 8(20), Abstr. No. 334731. 42. K.

Rao, Linfeng

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

E-Print Network 3.0 - accelerated solvent extraction Sample Search...  

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

17 ACADEMIE D'AIX-MARSEILLE UNIVERSITE D'AVIGNON ET DES PAYS DE VAUCLUSE Summary: : Optimising solvent free microwave extraction method Zill-e-HUMA, Maryline ABERT-VIAN, Jean...

442

Effect of Flaxseed Meals and Extracts on Lipid Stability in a Stored Meat Product  

Science Journals Connector (OSTI)

Cholesterol content was determined by AOCS Official Method Ch 6-91 [22]. Briefly, lipids (50 mg) were saponified with 1 M KOH in methanol for 18 h at room temperature, then unsaponifiables were extracted with hex...

Katarzyna Waszkowiak; Magdalena Rudzi?ska

2014-06-01T23:59:59.000Z

443

Computer Graphics International 2011 Interactive Extraction and Re-Design of Sweep Geometries  

E-Print Network [OSTI]

; B: user draws two strokes (yel- low) to extract the teapot body as a stationary, rotational sweep; C to the teapot body). Two different modified versions of the handle were added for variety. We choose to focus

O'Brien, James F.

444

Attractive Interactions between Reverse Aggregates and Phase Separation in Concentrated Malonamide Extractant Solutions  

Science Journals Connector (OSTI)

Using small angle X-ray scattering, conductivity, and phase behavior determination, we show that concentrated solutions of molanamide extractants, dimethyldibutyltetradecylmalonamide (DMDBTDMA), are organized in reverse oligomeric aggregates which have ...

C. Erlinger; L. Belloni; Th. Zemb; C. Madic

1999-03-09T23:59:59.000Z

445

N,N'-Dioctanoylpiperazine as a novel extractant for U(VI)  

Science Journals Connector (OSTI)

N,N'-Dioctanoylpiperazine (DOPEZ), a novel extractant for U(VI) in carbon tetrachloride has been studied. The principal factors affecting the U(VI) distribution ratio, i.e., the concentration of aqueous nitric ac...

Yang Xing-Cun; Bao Bo-Rong; Sun Guo-Xin…

2003-12-01T23:59:59.000Z

446

Synthesis of fluorinated malonamides and use in L/L extraction of f-elements  

Science Journals Connector (OSTI)

Abstract Synthesis of new fluorinated tertiary malonamides (F-malonamides) was accomplished, and their liquid/liquid (L/L) extraction properties with f-elements were investigated. These molecules are fluorinated analogues of well known extractants used in several processes designed towards the treatment of nuclear wastes, and the efficient separation of lanthanides from minor actinides; however, the synthesis of F-malonamides deserved a modification of the general synthetic route commonly employed to prepare H-malonamides. Extraction of neodymium from various aqueous media into both fluorous and classical solvents was studied, which revealed an opposite trend between F-malonamides and H-malonamides: L/L extraction ability is very sensitive to the nitrogen atoms substitution pattern, and the most efficient F-malonamide is compound 3 (R1 = Me), whereas the best H-malonamide is compound 5 (R1 = Bu, DMDBTDMA).

Marie-Claire Dul; Damien Bourgeois; Jérôme Maynadié; Daniel Meyer

2013-01-01T23:59:59.000Z

447

Review of Possible Technologies for Actinide Separations Using Other Extractants Than TBP  

Science Journals Connector (OSTI)

The properties of the extractants suitable for the new types of separations needed in the nuclear fuel cycle are reviewed. N,N-dialkylamides (RCO-NR’2), diamides ((RR’NCO)2CHR”), dialkylcarbamoylmethylenephosphon...

C. Musikas

1999-01-01T23:59:59.000Z

448

Methylbutylmalonamide as an extractant for U(VI), Pu(IV) and Am(III)  

Science Journals Connector (OSTI)

The unsymmetrical diamide methylbuthylmalonamide has been synthesized and used in the extraction of U(VI), Pu(IV) and Am(III) in benzene medium. The distribution ratio for the three cations was found to increa...

G. M. Nair; D. R. Prabhu; G. R. Mahajan

1994-01-03T23:59:59.000Z

449

Dioctyl butyramide and dioctyl isobutyramide as extractants for uranium(VI) and plutonium(IV)  

Science Journals Connector (OSTI)

Two isomeric monoamides, dioctyl butyramide (DOBA) and dioctyl isobutyramide (DOIBA) were synthesized for extracting uranium(VI) and plutonium(IV) from aqueous nitric acid medium into various diluents such asn-do...

G. M. Nair; G. R. Mahajan; D. R. Prabhu

1996-03-01T23:59:59.000Z

450

Extraction of high-quality DNA from ethanol-preserved tropical plant tissues  

Science Journals Connector (OSTI)

Proper conservation of plant samples, especially during remote field collection, is essential to assure quality of extracted DNA. Tropical plant species contain considerable amounts of secondary compounds, such a...

Eduardo A Bressan; Mônica L Rossi; Lee TS Gerald; Antonio Figueira

2014-04-01T23:59:59.000Z

451

Hexavalent Chromium Reduction by Free and Immobilized Cell-free Extract of Arthrobacter rhombi-RE  

Science Journals Connector (OSTI)

In the present study, hexavalent chromium (Cr(VI)) reduction potential of chromium reductase associated with the cell-free extracts (CFE) of Arthrobacter rhombi-RE species was evaluated. Arthrobacter rhombi-RE, a...

R. Elangovan; Ligy Philip; K. Chandraraj

2010-01-01T23:59:59.000Z

452

E-Print Network 3.0 - aqueous leaves extract Sample Search Results  

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

for at least 1 minute and spin as in step 4. 7. Remove the aqueous phase to a new tube. 8... Total RNA extraction from Arabidopsis and tobacco Allison C. Mallory, Bartel Lab...

453

Teaching Sustainable Development Concepts in the Laboratory: A Solid–Liquid Extraction Experiment  

Science Journals Connector (OSTI)

Teaching Sustainable Development Concepts in the Laboratory: A Solid–Liquid Extraction Experiment ... One of the principles of sustainable development is to replace chemicals traditionally derived from oil with alternative, renewable materials. ...

Juan Carlos Parajó; Herminia Domínguez; Valentín Santos; José Luis Alonso; Gil Garrote

2008-07-01T23:59:59.000Z

454

Separation of Fischer-Tropsch Wax from Catalyst by Supercritical Extraction  

SciTech Connect (OSTI)

The proposed process of using supercritical fluid extraction in conjunction with the Fischer-Tropsch slurry bubble column reactor has been examined using the ASPEN Plus simulator by the research group at North Carolina State University. Qualitative results have been obtained for varying the following process parameters: solvent-to-wax ratio, solvent type (pentane or hexane), extraction temperature and pressure, and recovery unit temperature and pressure. The region of retrograde behavior was determined for pentane and hexane. Initial results show hexane to be the superior solvent; compared to pentane, hexane requires lower quantities of solvent makeup (the amount of solvent which needs to be added to account for solvent that cannot be recycled), and also results in a lower average molecular weight of slurry in the reactor. Studies indicate that increasing the extraction temperature, extraction pressure, recovery temperature, or solvent to wax ratio decreases the amount solvent makeup required. Decreasing the recovery pressure was found to decrease the makeup flowrate.

Joyce, P.C.; Thies, M.C.

1997-01-31T23:59:59.000Z

455

Cross-domain co-extraction of sentiment and topic lexicons  

Science Journals Connector (OSTI)

Extracting sentiment and topic lexicons is important for opinion mining. Previous works have showed that supervised learning methods are superior for this task. However, the performance of supervised methods highly relies on manually labeled training ...

Fangtao Li; Sinno Jialin Pan; Ou Jin; Qiang Yang; Xiaoyan Zhu

2012-07-01T23:59:59.000Z

456

The evaluation of two extraction procedures for the recovery of organic chemicals from spiked soils  

E-Print Network [OSTI]

procedure to desorb and remove contaminants from a sample matrix prior to analysis. The recovery efficiency of an extraction procedure will indeed affect the quality of analytical data and may influence waste site assessments. The objective of this study...

Huebner, Henry Joseph

1993-01-01T23:59:59.000Z

457

Pore-Water Extraction from Unsaturated Porous Media: Intermediate-Scale Laboratory  

SciTech Connect (OSTI)

As a remedial approach, vacuum-induced pore-water extraction offers the possibility of contaminant and water removal from the vadose zone, which may be beneficial in reducing the flux of vadose zone contaminants to groundwater. Vadose zone water extraction is being considered at the Hanford Site in Washington State as a means to remove technetium-99 contamination from low permeability sediments with relatively high water contents. A series of intermediate-scale laboratory experiments have been conducted to improve the fundamental understanding and limitations of the technique. Column experiments were designed to investigate the relations between imposed suctions, water saturations, and water production. Flow cell experiments were conducted to investigate the effects of high-permeability layers and near-well compaction on pore-water extraction efficiency. Results show that water extraction from unsaturated systems can be achieved in low permeability sediments, provided that the initial water saturations are relatively high. The presence of a high-permeability layer decreased the yield, and compaction near the well screen had a limited effect on overall performance. In all experiments, large pressure gradients were observed near the extraction screen. Minimum requirements for water extraction include an imposed vacuum-induced suction larger than the initial sediment capillary pressure, in combination with a fully saturated seepage-face boundary. A numerical multiphase simulator with a coupled seepage-face boundary conditions was used to simulate the experiments. Reasonable matches were obtained between measured and simulated results for both water extraction and capillary pressures, suggesting that numerical simulations may be used as a design tool for field-scale applications of pore-water extraction.

Oostrom, Martinus; Truex, Michael J.; Wietsma, Thomas W.; Tartakovsky, Guzel D.

2014-08-15T23:59:59.000Z

458

Development of Continuous Solvent Extraction Processes for Coal Derived Carbon Products  

SciTech Connect (OSTI)

This DOE NETL-sponsored effort seeks to develop continuous processes for producing carbon products from solvent-extracted coal. A key process step is removal of solids from liquefied coal. Three different processes were compared: gravity separation, centrifugation using a decanter-type Sharples Pennwalt centrifuge, and a Spinner-II centrifuge. The data suggest that extracts can be cleaned to as low as 0.5% ash level and probably lower using a combination of these techniques.

Elliot B. Kennel

2006-12-31T23:59:59.000Z

459

The SX Solver: A New Computer Program for Analyzing Solvent-Extraction Equilibria  

SciTech Connect (OSTI)

A new computer program, the SX Solver, has been developed to analyze solvent-extraction equilibria. The program operates out of Microsoft Excel{reg_sign} and uses the built-in ''Solver'' function to minimize the sum of the square of the residuals between measured and calculated distribution coefficients. The extraction of nitric acid by tributylphosphate has been modeled to illustrate the program's use.

McNamara, B.K.; Rapko, B.M.; Lumetta, G.J.

1999-02-09T23:59:59.000Z

460

Scandium nitrate-nitric acid-water-tributyl phosphate system. I. Scandium extraction isotherms  

SciTech Connect (OSTI)

A study has been made of scandium distribution between neat tributyl phosphate (TBP) and 0.2-1.2 M scandium solutions in 2.7-12.3 M nitric acid. Scandium extracts in equilibrium with 0.2-1 M Sc in 6-12 M HNO{sub 3} contain from 2 to 5 HNO{sub 3} molecules per scandium atom in extracted Sc complex.

Listopadov, A.A.; Nikitina, G.P.; Egorova, V.P. [Khlopin Radium Institute, St. Petersburg (Russian Federation)] [and others

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

The SX Solver: A New Computer Program for Analyzing Solvent-Extraction Equilibria.  

SciTech Connect (OSTI)

A new computer program, the SX Solver, has been developed to analyze solvent-extraction equilibria. The program operates out of Microsoft Excel{reg_sign} and uses the built-in ''Solver'' function to minimize the sum of the square of the residuals between measured and calculated distribution coefficients. The extraction of nitric acid by tributyl phosphate has been modeled to illustrate the program's use.

Lumetta, Gregg J; McNamara, Bruce K; Rapko, Brian M

1999-01-08T23:59:59.000Z

462

SUPPORTING DOMAIN SPECIFIC WEB-BASED SEARCH USING HEURISTIC KNOWLEDGE EXTRACTION  

E-Print Network [OSTI]

A SUPPORTING DOMAIN SPECIFIC WEB-BASED SEARCH USING HEURISTIC KNOWLEDGE EXTRACTION A Thesis by SUDHARSAN GUNANATHAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 2008 Major Subject: Computer Science B SUPPORTING DOMAIN SPECIFIC WEB-BASED SEARCH USING HEURISTIC KNOWLEDGE EXTRACTION A Thesis by SUDHARSAN GUNANATHAN Submitted...

Gunanathan, Sudharsan

2010-01-16T23:59:59.000Z

463

Can one extract the pi-neutron scattering length from pi-deuteron scattering?  

E-Print Network [OSTI]

We give a prove of evidence that the original power counting by Weinberg can be applied to estimate the contributions of the operators contributing to the pi-deuteron scattering length. As a consequence, pi-deuteron observables can be used to extract neutron amplitudes--in case of pi-deuteron scattering this means that the pi-neutron scattering length can be extracted with high accuracy. This result is at variance with recent claims. We discuss the origin of this difference.

A. Nogga; C. Hanhart

2005-11-02T23:59:59.000Z

464

Optics of the ILC Extraction Line for 2mrad Crossing Angle  

SciTech Connect (OSTI)

The ILC extraction line for 2 mrad crossing angle is under development by the SLAC-BNL-UK-France task force collaboration. This report describes the progress in the 2 mrad optics design which includes the changes to the final focus doublet, the complete optics for the extraction diagnostics, and the changes to the sextupole and collimation systems. The results of disrupted beam tracking simulations are presented.

Nosochkov, Y.; Moffeit, K.; Seryi, A.; Spencer, C.; Woods, M.; /SLAC; Angal-Kalinin, D.; Appleby, R.; /Daresbury; Parker, B.; /Brookhaven

2006-01-05T23:59:59.000Z

465

Process for the solvent extraction for the radiolysis and dehalogenation of halogenated organic compounds in soils, sludges, sediments and slurries  

DOE Patents [OSTI]

A process of extracting halogenated organic compounds, and particularly PCBs, from soil, sediment, slurry, sludge and dehalogenating the compounds contacting a contaminated soil sample with an extraction medium of a mixture of an alkane and a water miscible alcohol. The organic compounds dissolve in the extraction medium which is separated from the soil by passing water upwardly through the soil. The extraction medium floats to the surface of the water and is separated. Thereafter, the extraction medium containing the halogenated organic contaminants is subjected to ionizing radiation to radiolytically dehalogenate the compounds.

Mincher, Bruce J. (3705 Creekside Dr., Idaho Falls, ID 83404); Curry, Randy Dale (1104 Merrill Ct., Columbia, MO 65203); Clevenger, Thomas E. (2512 Bluff Blvd., Columbia, MO 65201); Golden, Jeffry (12612 Cedarbrook La., Laurel, MD 20708)

2000-01-01T23:59:59.000Z

466

Modeling In-stream Tidal Energy Extraction and Its Potential Environmental Impacts  

SciTech Connect (OSTI)

In recent years, there has been growing interest in harnessing in-stream tidal energy in response to concerns of increasing energy demand and to mitigate climate change impacts. While many studies have been conducted to assess and map tidal energy resources, efforts for quantifying the associated potential environmental impacts have been limited. This paper presents the development of a tidal turbine module within a three-dimensional unstructured-grid coastal ocean model and its application for assessing the potential environmental impacts associated with tidal energy extraction. The model is used to investigate in-stream tidal energy extraction and associated impacts on estuarine hydrodynamic and biological processes in a tidally dominant estuary. A series of numerical experiments with varying numbers and configurations of turbines installed in an idealized estuary were carried out to assess the changes in the hydrodynamics and biological processes due to tidal energy extraction. Model results indicated that a large number of turbines are required to extract the maximum tidal energy and cause significant reduction of the volume flux. Preliminary model results also indicate that extraction of tidal energy increases vertical mixing and decreases flushing rate in a stratified estuary. The tidal turbine model was applied to simulate tidal energy extraction in Puget Sound, a large fjord-like estuary in the Pacific Northwest coast.

Yang, Zhaoqing; Wang, Taiping; Copping, Andrea; Geerlofs, Simon H.

2014-09-30T23:59:59.000Z

467

Polyethylene glycol as a green solvent for effective extractive desulfurization of liquid fuel at ambient conditions  

Science Journals Connector (OSTI)

Abstract Today there are serious regulations to reduce sulfur content of fuels because the \\{SOx\\} produced during the combustion of fuels containing sulfur compounds make the air polluted and have dangerous environmental impacts. With the aim of replacement of the present volatile, flammable and toxic organic solvents or inefficient, corrosive and expensive ionic liquids (ILs), the polyethylene glycol (PEG) was introduced as a green, effective, non-toxic, non-corrosive and also recyclable molecular solvent for extractive desulfurization (EDS) of benzothiophenic compounds from liquid fuel in this work for the first time. PEG shows excellent EDS and it has the higher extraction efficiency for dibenzothiophene (DBT) (76% within 90 s) than those of ILs. Using this extractant, the BDT content was reduced from 512 to 10 ppmw (98%) only within three extraction stages, the minimum number of cycles within shortest time reported up to now, and the deep desulfurization was achieved. Effect of some important parameters including initial concentration of sulfur compound, PEG dosage, time and temperature of extraction on the EDS process was investigated. It was fond that extraction performance of PEG is independent to temperature and initial sulfur content, which is an excellent finding for industrialization. The feasibility of PEG for extraction of different thiophenic compounds was observed in the order of dibenzothiophene > benzothiophene > 4,6-dimethyldibenzothiopene. Finally, the PEG was reused in several cycles and then it was regenerated by adsorption method. The results of the present work hopefully provide useful information for future industrial application of PEG as an efficient green solvent for the EDS of liquid fuels.

Effat Kianpour; Saeid Azizian

2014-01-01T23:59:59.000Z

468

Influence of solvent on the antioxidant and antimicrobial properties of walnut (Juglans regia L.) green husk extracts  

Science Journals Connector (OSTI)

Walnut green husk is an agro-forest waste generated in the walnut (Juglans regia L.) harvest that could be valued as a source of natural compounds with antioxidant and antimicrobial properties. At this respect, the effect of the solvent (water, methanol, ethanol and 50% aqueous solutions of methanol and ethanol) on the extraction yields and extracts bioactive properties was analysed. Total phenols content of the extracts was determined by the Folin–Ciocalteau method. Extract antioxidant activity was evaluated using the reducing power assay and by the ability of the extracts to scavenge the DPPH radical. The scavenging effect of the aqueous extracts on the nitric oxide radical was also evaluated. The highest extraction yield was achieved with water (44.11%) and high bioactive potential was shown by the samples extracted with water/ethanol (1:1) (84.46 mg GAE/g extract; EC50 = 0.95 mg/mL for reducing power and EC50 = 0.33 mg/mL for DPPH assay). All the antioxidant properties analysed showed a concentration-dependent activity. The antimicrobial activity of the aqueous extracts was assessed and showed ability to inhibit the growth of Gram positive bacteria. The results obtained demonstrated the potential of the walnut green husk as an economical source of antioxidant and antimicrobial agents.

A. Fernández-Agulló; E. Pereira; M.S. Freire; P. Valentão; P.B. Andrade; J. González-Álvarez; J.A. Pereira

2013-01-01T23:59:59.000Z

469

Effect of main process parameters on extraction of pine kernel lipid using supercritical green solvents: Solubility models and lipid profiles  

Science Journals Connector (OSTI)

Supercritical fluid extraction of pine kernel lipids from Pinus pinea L. using green solvents (only CO2 or mixed with ethanol) was performed in a laboratory scale extraction system. For the first time in this study the effect of main operating parameters [i.e. pressure (20–50 MPa), temperature (40–60 °C), CO2 flow rate (0.061–0.259 kg h?1), entrainer concentration (2.5 and 5 vol.%) and average particle size (362.5 and 725 ?m)] on extraction yield, initial extraction rate and the solved contents of pine kernel lipid in CO2 or its solubility was investigated systematically. Experimental results showed that extraction yields (from 0.477 to 0.488 g PKL g?1 dry PK) obtained from supercritical CO2 extraction over 30 MPa of operating pressure was better than extraction yield (0.472 g PKL g?1 dry PK) obtained from organic solvent extraction. It should be noted that the extraction yield obtained using 5 vol.% of ethanol reached to 0.487 g PKL g?1 dry PK in 90 min under a suitable operating condition such as 30 MPa, 40 °C and 0.194 kg h?1 of green solvent flow rate. The crossover effect of pine kernel lipid was determined approximately at 23 MPa of operating pressure. The experimental solubility data, determined by the dynamic method, of pine kernel oil in supercritical CO2 were correlated by some empirical models such as Chrastil, del Valle–Aguilera, Adachi–Lu, and Sparks models. Adachi–Lu and Sparks models made a lower error in the prediction of solubility. Lipids extracted by supercritical green solvents extraction contain more unsaturated fatty acids than those extracted by Soxhlet with in the n-hexane extracts.

U?ur Salg?n; Sema Salg?n

2013-01-01T23:59:59.000Z

470

Feasibility of Injection/Extraction Systems for Muon FFAG Rings in the Neutrino Factory  

SciTech Connect (OSTI)

Non-scaling FFAG rings have been proposed for muon acceleration in a neutrino factory. In order to achieve small orbit excursion and small time of flight variation, lattices with a very compact cell structure and short straight sections are required. The resulting geometry places very challenging constraints on the injection/extraction systems. The feasibility of injection/extraction is discussed and various implementations focusing on minimization of kicker/septum strength are presented. The injection and extraction systems in the nonscaling FFAG for muon acceleration in a neutrino factory were studied in the ring based on FODO lattice. The vertical direction was found to be preferential for both injection and extraction, which allows for lower kicker strengths and facilitates the distribution of kickers due to a lower phase advance per cell in comparison with the horizontal plane. It is possible to design mirror-symmetric schemes in which the kickers can be reused for both signs of muons. The disadvantage of these solutions is a need for special magnets with large aperture in the injection/extraction region due to the large kicked beam oscillations. The strengths of the required kickers are still very challenging and the fields in the septum magnets dictates the need for a superconducting design.

Pasternak, J.; Berg, J.; Aslaninejad, M.; Kelliher, D.; Machida, S.

2010-12-01T23:59:59.000Z

471

Heat extracted from the long term flow test in the Fenton Hill HDR reservoir  

SciTech Connect (OSTI)

A long-term flow test was carried out in the Fenton Hill HDR Phase-2 reservoir for 14 months during 1992-1993 to examine the potential for supplying thermal energy at a sustained rate as a commercial demonstration of HDR technology. The test was accomplished in several segments with changes in mean flowrate due to pumping conditions. Re-test estimates of the extractable heat content above a minimum useful temperature were based on physical evidence of the size of the Fenton Hill reservoir. A numerical model was used to estimate the extent of heat extracted during the individual flow segments from the database of measured production data during the test. For a reservoir volume of 6.5x10{sup 6}m{sup 3}, the total heat content above a minimum temperature of 150{degree} C was 1.5x10{sup 15}J. For the total test period at the three sustained mean flowrates, the integrated heat extracted was 0.088x10{sup 15}J, with no discernable temperature decline of the produced fluid. The fraction of energy extracted above the abandonment temperature was 5.9%. On the basis of a constant thermal energy extraction rate, the lifetime of the reservoir (without reservoir growth) to the abandonment temperature would be 13.3 years, in good agreement with the pre-test estimate of 15.0 years for the given reservoir volume.

Kruger, Paul; Robinson, Bruce

1994-01-20T23:59:59.000Z

472

Ion energy distribution near a plasma meniscus with beam extraction for multi element focused ion beams  

SciTech Connect (OSTI)

An earlier study of the axial ion energy distribution in the extraction region (plasma meniscus) of a compact microwave plasma ion source showed that the axial ion energy spread near the meniscus is small ({approx}5 eV) and comparable to that of a liquid metal ion source, making it a promising candidate for focused ion beam (FIB) applications [J. V. Mathew and S. Bhattacharjee, J. Appl. Phys. 105, 96101 (2009)]. In the present work we have investigated the radial ion energy distribution (IED) under the influence of beam extraction. Initially a single Einzel lens system has been used for beam extraction with potentials up to -6 kV for obtaining parallel beams. In situ measurements of IED with extraction voltages upto -5 kV indicates that beam extraction has a weak influence on the energy spread ({+-}0.5 eV) which is of significance from the point of view of FIB applications. It is found that by reducing the geometrical acceptance angle at the ion energy analyzer probe, close to unidirectional distribution can be obtained with a spread that is smaller by at least 1 eV.

Mathew, Jose V.; Paul, Samit; Bhattacharjee, Sudeep [Department of Physics, Indian Institute of Technology, Kanpur 208016, Uttar Pradesh (India)

2010-05-15T23:59:59.000Z

473

The Extraction of Heavy Metals by Means of a New Electrolytic Method  

SciTech Connect (OSTI)

The extraction of metals in known metallurgical methods is pursued on the basis of separating as much as possible the desired metal's content from the ore concentrate, in the most economical manner. When these principles are also applied to the extraction of heavy metals, the related environmental factors do not readily meet with requirements. Today, an acceptable extraction technology for metals must satisfy the need to produce the deep separation of metals from their source in both economical and environmentally safe manner. This pertains to the direction of our ongoing research and development, among others in the field of environmental remediation. Earlier, we successfully addressed in an environmentally safe manner the selective extraction of radioactive isotopes from liquid radioactive wastes, produced at Armenia's Metzamor Nuclear Power Plant and implemented a functioning LRW station at the NPP. Currently, we extended our new electrodialysis-based electrolytic method in a laboratory scale, for the extraction and deep separation of different metals, including the heavy metals. Our new method, its efficiency, economy and full compliance with environmental issues will be presented.

Guiragossian, Z. G.; Martoyan, G. A.; Injeyan, S. G.; Tonikyan, S. G.; Nalbandyan, G. G.

2003-02-25T23:59:59.000Z

474

Supercritical Fluid Extraction of Radionuclides - A Green Technology for Nuclear Waste Management  

SciTech Connect (OSTI)

Supercritical fluid carbon dioxide (SF-CO2) is capable of extracting radionuclides including cesium, strontium, uranium, plutonium and lanthanides directly from liquid and solid samples with proper complexing agents. Of particular interest is the ability of SF-CO2 to dissolve uranium dioxide directly using a CO2-soluble tri-nbutylphosphate- nitric acid (TBP-HNO3) extractant to form a highly soluble UO2(NO3)2(TBP)2 complex that can be transported and separated from Cs, Sr, and other transition metals. This method can also dissolve plutonium dioxide in SF-CO2. The SF-CO2 extraction technology offers several advantages over conventional solvent-based methods including ability to extract radionuclides directly from solids, easy separation of solutes from CO2, and minimization of liquid waste generation. Potential applications of the SF-CO2 extraction technology for nuclear waste treatment and for reprocessing of spent nuclear fuels will be discussed. Information on current demonstrations of the SF-CO2 technology by nuclear companies and research organizations in different countries will be reviewed.

Wai, Chien M.

2003-09-10T23:59:59.000Z

475

Uranium Extraction From Laboratory Synthesized, Uranium-Doped Hydrous Ferric Oxides  

SciTech Connect (OSTI)

The extractability of uranium (U) from synthetic hydrous ferric oxides has been shown to decrease as a function of mineral ripening, consistent with the hypothesis that the ripening process decrease contaminant lability. To evaluate this process, three hydrous ferric oxide (HFO) suspensions were co-precipitated with uranyl (UO22+) and maintained at pH 7.0 ± 0.1. Uranyl was added to the HFO post-precipitation in a fourth suspension. Two suspensions also contained either co-precipitated silicate (Si-U-HFO) or phosphate (P-U-HFO). After precipitation of the HFOs, at time intervals of one week, one month, six months, one year, and 2 years, aliquots of the suspensions were contacted with five solutions for a range of time. The extracts were analyzed for U and iron (Fe). The results are consistent with the hypothesis that U and Fe extractability will decrease as the mineral phase ripens. All extracting solutions exhibited some degree of selectivity for U, as the proportional extraction of U exceeded that for congruent dissolution. Micro X-ray diffraction analysis indicates the transformation from an amorphous phase to a material containing substantial proportions of crystalline goethite and hematite, except the P-U-HFO which remained primarily amorphous. Further analysis of the co-precipitates by the Mössbauer technique and scanning electron microscopy (SEM) provides further evidence of mineralogic ripening

Smith, Steven C.; Douglas, Matthew; Moore, Dean A.; Kukkadapu, Ravi K.; Arey, Bruce W.

2009-03-01T23:59:59.000Z

476

Re-refining of waste mineral insulating oil by extraction with N-methyl-2-pyrrolidone  

Science Journals Connector (OSTI)

Extraction with N-methyl-2-pyrrolidone (NMP) via the three-stage mixer–settler operation was studied as possible process for re-refining of waste mineral insulating oil. The following extraction process parameters were investigated systematically in order to determine their optimum values: amount of water as co-solvent in NMP, extraction temperature and solvent/oil ratio. The process parameters and resulting oil chemical compositions were found to influence the electrical properties and the oxidation stability of the re-refined oil. The levels of aromatic, paraffinic and polycyclic aromatic hydrocarbons were determined using IR spectroscopy and HPLC, while other relevant chemical and electrical properties of waste and re-refined oil were determined according to IEC, ISO and ASTM standards. Extraction using NMP was found to be an adequate method for waste mineral insulating oil re-refining, according to the application properties of the re-refined oil. Moderate extraction temperature, 1% water in NMP and a low solvent/oil ratio (0.5) were determined to be the optimum process parameters.

Jelena Luki?; Aleksandar Orlovi?; Michael Spiteller; Jovan Jovanovi?; Dejan Skala

2006-01-01T23:59:59.000Z

477

Long-term changes in the extractability and bioavailability of zinc and cadmium after sludge application  

SciTech Connect (OSTI)

Changes in the extractability and uptake by crops of sludge metals in a long-term field experiment, started in 1942, were measured to assess whether Zn and Cd are either fixed by the sludge/soil constituents or are released as the sludge organic matter (OM) decomposes. Total and 0.1 M CaCl{sub 2}-extractable concentrations of Zn and Cd in soil and total concentrations in crops were measured on archived crop and soil samples. Extractability of Zn as a proportion of the total ranged from 0.5 to 3% and that of Cd from 4 to 18%, and were higher in sludge-amended than farmyard manure or fertilizer-amended soils. Over a 23-yr period after 1961, when sludge was last applied, the extractability of both metals fluctuated, but neither decreased nor increased consistently. The relationships between total soil and crop metal concentrations were linear, with no evidence of a plateau across the range of soil metal concentrations achieved. The slopes of the soil-plant relationships depended on the type of crop or crop part examined, but were generally in the order red beet (Beta vulgaris L.) > sugar beet (Beta vulgaris L.) > carrot (Daucus carota L.) > barley (Hordeum vulgare L.). However, there also were large seasonal differences in metal concentrations in the crops. It is concluded from the available evidence that up to 23 yr after sludge applications cease, Zn and Cd extractability and bioavailability do not decrease.

McGrath, S.P.; Zhao, F.J.; Dunham, S.J.; Crosland, A.R.; Coleman, K.

2000-06-01T23:59:59.000Z

478

Modeling of the simultaneous extraction of nitric acid and uranyl nitrate with tri-n-butyl phosphate. Application to extraction operation  

SciTech Connect (OSTI)

A mathematical model developed for the equilibrium HNO{sub 3}-UO{sub 2}(NO{sub 3}){sub 2}-tri-n-butyl phosphate (TBP)-diluent is the basis of the computation of distribution isotherms. The isotherms are used to study the influence of TBP concentration on two chosen operation parameters, distribution coefficients and number of theoretical stages, for the selected flow sheets. It is established that an increase in TBP concentration leads to a decrease in the number of theoretical stages for the extraction flow sheets but to their increase for the striping flow sheets. Given diagrams can be used to determine the efficiency of extraction processes. Agreement with available literature calculations on the number of theoretical stages supports the use of the model in the computation of distribution isotherms, of the system quoted above, in a wide range of nitric acid, uranyl nitrate, and TBP concentrations.

Comor, J.J.; Tolic, A.S.; Kopecni, M.M.; Petkovic, D.M. [Vinca Inst. of Nuclear Sciences, Belgrade (Yugoslavia). Chemical Dynamics Lab.] [Vinca Inst. of Nuclear Sciences, Belgrade (Yugoslavia). Chemical Dynamics Lab.

1999-01-01T23:59:59.000Z

479

A Spin on Technology: Extracting Value from Wasted Heat | Department of  

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

A Spin on Technology: Extracting Value from Wasted Heat A Spin on Technology: Extracting Value from Wasted Heat A Spin on Technology: Extracting Value from Wasted Heat November 12, 2010 - 2:12pm Addthis Ener-G-Rotors has developed a system that converts hot water and steam into electricity. | File photo Ener-G-Rotors has developed a system that converts hot water and steam into electricity. | File photo Joshua DeLung What are the key facts? This new system allows manufacturers to convert heated wastewater and steam to energy. $834,000 Recovery Act tax credit is helping Ener-G-Rotors startup to commercialize their product. A three year return on investment equals $42,000 savings on average each year using the GEN4 System. Wastewater and steam can be a challenging resource for manufacturers to manage. The heated wastewater and steam are either lost or must be cooled

480

Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate  

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

Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable Power Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable Power April 12, 2013 - 11:17am Addthis Learn the basics of enhanced geothermal systems technology. I Infographic by Sarah Gerrity. Learn the basics of enhanced geothermal systems technology. I Infographic by Sarah Gerrity. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs What does this project do? Desert Peak 2 is the nation's first commercial enhanced geothermal system to supply electricity to the grid. Based in Churchill County, Nevada, the project has increased power

Note: This page contains sample records for the topic "dpe dual-phase extraction" 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

Separation of Lanthanoids by SiO{sub 2}-P Adsorbent Impregnated with Extractants - 13103  

SciTech Connect (OSTI)

The adsorption and separation properties of lanthanoids (Ln) were investigated for the mutual separation of trivalent minor actinoids (MA) by using different adsorbents of hydrophobic extractant/SiO{sub 2}-P in solutions of hydrophilic extractant/HNO{sub 3}. The synergistic effect by use of the hydrophobic and hydrophilic extractants was evaluated by batch and column experiments. The results of batch experiments showed the synergistic effect which lowered the K{sub d} values of Ln. In column experiments, effective mutual separation between Nd and Sm was demonstrated. These results suggest that the mutual separation between Am and Cm is possible because the K{sub d} values of Am and Cm are probably similar to those of Nd and Sm. (authors)

Yamanishi, Kei; Mimura, Hitoshi; Usuda, Shigekazu [Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aza-Aoba 6-6-01-2, Aoba-ku, Sendai-shi, Miyagi-ken, 980-8579 (Japan)] [Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aza-Aoba 6-6-01-2, Aoba-ku, Sendai-shi, Miyagi-ken, 980-8579 (Japan); Sasaki, Yuji; Morita, Yasuji [Research Group for Aqueous Separation Chemistry, Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195 (Japan)] [Research Group for Aqueous Separation Chemistry, Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, Tokai-mura, Naka-gun, Ibaraki-ken, 319-1195 (Japan)

2013-07-01T23:59:59.000Z

482

Improving transparency: extracting, visualising and analysing corporate relationships from SEC 10-K documents  

Science Journals Connector (OSTI)

We present a system to extract, visualise and analyse inter-corporation relationships disclosed by public companies in their annual reports to the US Securities and Exchange Commission (SEC). In improving the transparency of these disclosures, we allow policymakers, analysts, investors and the general public to analyse these relationships at both the firm level and the industry level. Using probabilistic information retrieval and extraction techniques, we automatically extract a dataset of 45,000 relationships between 26,000 companies from over 15 GB of SEC 10-K documents. These relationships range from ownerships, agreements and personal connections to competition and legal disagreements. Information visualisation and social network analytic techniques can then be applied to explore and analyse the dataset.

Michael Gebbie; Kim Norlen; Gabriel Lucas; John Chuang

2007-01-01T23:59:59.000Z

483

Evaluation of pitches and cokes from solvent-extracted coal materials  

SciTech Connect (OSTI)

Three initial coal-extracted (C-E) samples were received from the West Virginia University (WVU) Chemical Engineering Department. Two samples had been hydrogenated to obtain pitches that satisfy Theological requirements. One of the hydrogenated (HC-E) samples had been extracted by toluene to remove ash and higher molecular weight aromatic compounds. We were unable to measure the softening point and viscosity of the non-hydro treated solid extract sample, Positive characteristics in the HC-E materials were softening points of 113-119{degrees}C, low sulfur and ash. The oxygen and nitrogen content of the HC-E samples may limit future usage in premium carbon and graphite products. Coking values were similar to petroleum pitches. Laboratory anode testing indicates that in combination with standard coal-tar pitch, the HC-E material can be used as a binder pitch.

McHenry, E.R.

1996-12-01T23:59:59.000Z

484

Retorting of oil shale followed by solvent extraction of spent shale: Experiment and kinetic analysis  

SciTech Connect (OSTI)

Samples of El-Lajjun oil shale were thermally decomposed in a laboratory retort system under a slow heating rate (0.07 K/s) up to a maximum temperature of 698--773 K. After decomposition, 0.02 kg of spent shale was extracted by chloroform in a Soxhlet extraction unit for 2 h to investigate the ultimate amount of shale oil that could be produced. The retorting results indicate an increase in the oil yields from 3.24% to 9.77% of oil shale feed with retorting temperature, while the extraction results show a decrease in oil yields from 8.10% to 3.32% of spent shale. The analysis of the data according to the global first-order model for isothermal and nonisothermal conditions shows kinetic parameters close to those reported in literature.

Khraisha, Y.H.

2000-05-01T23:59:59.000Z

485

Third phase formation in nitric acid extraction by n-octyl(phenyl)-n,n-diisobutylcarbamoylmethylphosphine oxide  

SciTech Connect (OSTI)

The third phase formation was studied as a function of n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) and tri-n-butyl phosphate (TBP) concentrations and temperature in the extraction of nitric acid. The concentration fractions of CMPO and TBP in the second and the third phases were determined by gas chromatography. Both CMPO and TBP were found to be enriched in the third phase. The concentrations of nitric acid in the second and the third phases relatively agreed with the calculated concentrations based on the extraction equilibrium constants of nitric acid by CMPO and TBP. The extraction of Np with the third phase formation was also discussed. 21 refs., 4 figs., 3 tabs.

Nagasaki, S.; Wisnubroto, D.S.; Enokida, Y.; Suzuki, A. (Univ. of Tokyo (Japan))

1994-03-01T23:59:59.000Z

486

Improved procedure for extraction of aromatic bases from synfuel materials. [Aromatic amines; azaarenes  

SciTech Connect (OSTI)

The present study was undertaken to evaluate the conventional aqueous acidbase extraction procedures and to explore alternate conditions for optimizing recovery of aromatic bases. For four procedures the recoveries were measured for 13 components in a mixture containing phenols, polynuclear aromatic hydrocarbons(PAH), primary aromatic amines (PAA), and azaarenes (AA) representative of the types of compounds found in synfuel materials. The results demonstrated that recoveries of hydrophobic 3 to 5 ring PAA and AA can be dramatically increased by using methanol as a cosolvent. The modified procedure is highly efficient for extraction of larger PAA and AA, and does not lead to emulsions when extracting samples of coal-derived materials. 2 figures, 2 tables.

Boparai, A.S.; Haugen, D.A.; Schneider, J.F.

1981-01-01T23:59:59.000Z

487

Co-extraction of Am(VI) and the major actinides with tributyl phosphate  

SciTech Connect (OSTI)

Sodium bismuthate was found to be an effective oxidant for Am in nitric acid solutions up to 6 M in concentration. However, in the presence of tributyl phosphate, americium was quickly reduced to the trivalent state, resulting in low distribution ratios. Pre-equilibration of the organic phase with bismuthate at the appropriate acid concentration was not effective at preventing americium reduction by tributyl phosphate. However, when a small amount of perchloric acid was added to the acidic, bismuthate-containing aqueous phase, much higher distribution ratios for americium extraction were achieved. Data comparing the extraction of americium to hexavalent uranium, neptunium and plutonium are presented. Slope analysis was used to confirm the extraction of americium in the hexavalent state. (authors)

Mincher, Bruce J.; Martin, Leigh R.; Schmitt, Nicholas C. [Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID, 83413-7113 (United States)

2007-07-01T23:59:59.000Z

488

T-582: RSA systems has resulted in certain information being extracted from  

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

2: RSA systems has resulted in certain information being 2: RSA systems has resulted in certain information being extracted from RSA systems that relates to RSA SecurID T-582: RSA systems has resulted in certain information being extracted from RSA systems that relates to RSA SecurID March 17, 2011 - 11:45pm Addthis PROBLEM: Recently EMC's security systems identified an extremely sophisticated cyber attack in progress, targeting their RSA business unit. RSA took a variety of aggressive measures against the threat to protect their business and their customers, including further hardening of their IT infrastructure. PLATFORM: RSA SecurID implementations ABSTRACT: RSA investigation has revealed that the attack resulted in certain information being extracted from RSA's systems. Some of that information is related to RSA's SecurID two-factor authentication products.

489

Anti-biofilm activity of Marula – A study with the standardized bark extract  

Science Journals Connector (OSTI)

AbstractEthnopharmacological relevance Marula (Sclerocarya birrea; family – Anacardiaceae) is an African plant, which enjoys wide socio-economic importance particularly in southern part of Africa. The fruits are consumed as food and also as alcoholic beverage (cream liquor). In different parts of Africa, the decoction of the bark is traditionally used for the treatment of dysentery, diarrhoea, and various other infectious conditions. The aim of the study was to investigate the anti-biofilm properties of the methanol extract of Marula bark (stem bark of Sclerocarya birrea), with a view towards combating the emergence of antimicrobial resistance often associated with bacterial biofilms. Materials and methods The standardized methanol extract was initially tested for its antimicrobial property. The crystal violet assay was used for evaluating anti-biofilm (biofilm formation by Pseudomonas aeuginosa) activity. Further in order to study the mechanism of anti-biofilm activity, the same was evaluated for understanding its role on various quorums sensing mediated phenomenon (swarming motility assay, protease and pyoverdin assay) that are known to be associated with the formation of biofilms and pathogenicity. Results The methanol extract showed no inhibition of bacterial growth up to a concentration of 200 µg/ml. Interestingly, the sample produced anti-biofilm activity (around 75% decrease; 100 µg/ml) at sub-lethal concentration. Further it also significantly reduced the QS mediated swarming motility. The release of various virulent factors (protease and pyoverdin) was found to be lowered when pre-treated with the extract. Conclusion The present study illustrates the anti-biofilm property Sclerocarya birrea. The standardized extract significantly disrupted the quorum sensing mediated production of biofilm formation and also inhibited swarming ability of the cells. The extract displayed a regulatory role on the secretion of protease and pyoverdin, two QS dependent pathogenic factors found in Pseudomonas aeruginosa. This study also validates the ethnobotanical use of Marula.

Ratul Sarkar; Sushil K. Chaudhary; Amrita Sharma; Kirendra K. Yadav; Neelesh K. Nema; Mamello Sekhoacha; Sanmoy Karmakar; Fernão C. Braga; Motlalepula Gilbert Matsabisa; Pulok K. Mukherjee; Tuhinadri Sen

2014-01-01T23:59:59.000Z

490

Extraction and Quantitative Analysis of Iodine in Solid and Solution Matrixes  

SciTech Connect (OSTI)

129I is a contaminant of interest in the vadose zone and groundwater at numerous federal and privately-owned facilities. Several techniques have been utilized to extract iodine from solid matrices; however, all of them rely on two fundamental approaches: liquid extraction or chemical/heat facilitated volatilization. While these methods are typically chosen for their ease of implementation, they do not totally dissolve the solid. Because some of the iodine partitions onto the soil, extraction methods that do not result in total sample dissolution could underestimate the total iodine content of solid samples. We defined a method that produces complete solid dissolution and conducted laboratory tests to assess its efficacy to completely extract iodine from solid matrices. Testing consisted of potassium nitrate/potassium hydroxide fusion of the sample, followed by sample dissolution in a mixture of sulfuric acid and sodium bisulfite. Direct analysis of the dissolved sample was performed via inductively coupled plasma mass spectrometry (Perkin Elmer Elan DRC II) using a tertiary amine (Spectrasol CFA-C) carrier solution. The fusion extraction method resulted in complete sample dissolution of all solid matrices tested: sediment, glass samples containing low-levels of iodine, as well as tank waste material collected from the Hanford Site. Quantitative analysis of iodine (127I and 129I) showed better than ? 10% accuracy for certified reference standards, with the linear operating range extending more than three orders of magnitude (0.005 to 5 ug/L). Extraction and analysis of four replicates of standard reference material (San Joaquin Soil) from the National Institute of Standards and Technology, Gaithersburg, MD, resulted in an average recovery of 98% with a relative percent deviation of 6%. This simple and cost-effective technique can be applied to solid samples of varying matrices with little or no adaptation.

Brown, Christopher F.; Geiszler, Keith N.; Vickerman, Tanya S.

2005-11-01T23:59:59.000Z

491

Extraction of antimony from nitric acid solutions using tributyl phosphate. I. Tributyl phosphate-antimony(III)-nitric acid system  

SciTech Connect (OSTI)

Experimental data have been reported concerning the extraction of trivalent antimony from nitric acid solutions using tributyl phosphate (TBP). A possible mechanism for the extraction of antimony(III) has been determined and the (pre)concentration constant for the process has been calculated. The effect of temperature on trivalent antimony extraction has also been evaluated. The enthalpy value and standard isobar potential and entropy for this process have been determined.

Lakaev, V.S.; Smelov, V.S.

1989-01-01T23:59:59.000Z

492

Extraction of antimony from nitric acid solutions using tributyl phosphate. II. Tributyl phosphate-antimony(V)-nitric acid system  

SciTech Connect (OSTI)

The extraction of pentavalent antimony from nitric acid solutions using tributyl phosphate has been investigated. A possible mechanism for the extraction of antimony(V) has been determined and the (pre)concentration constant for the process has been calculated. The composition of the extracted antimony(V) complex has been deduced. A negative effect of temperature on the distribution coefficient for antimony(V) has also been demonstrated.

Lakaev, V.S.; Smelov, V.S.

1989-01-01T23:59:59.000Z

493

Three-dimensional two-pion emission source at SPS: Extraction of source breakup time and emission duration  

SciTech Connect (OSTI)

A model-independent, three-dimensional source function for pion pairs has been extracted from Pb + Pb collisions at {radical}s{sub NN} = 17.3 GeV. The extracted source exhibits long-range non-Gaussian tails in the directions of the pion-pair net transverse momentum and of the beam. Comparison with the Therminatormodel allows for an extraction of the pion source proper breakup time and of emission duration in the collisions.

Chung, P., E-mail: pchung@mail.chem.sunysb.ed [Stony Brook University (SUNYSB), Department of Chemistry (United States); Danielewicz, P., E-mail: danielewicz@nscl.msu.ed [Michigan State University, National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy (United States)

2008-09-15T23:59:59.000Z

494

Sample Results From The Next Generation Solvent Program Real Waste Extraction-Scrub-Strip Testing  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed multiple Extraction-Scrub-Strip (ESS) testing using real waste solutions, and three Next Generation Solvent (NGS) variations, which included radiologically clean pure NGS, a blend of radiologically clean NGS and radiologically clean BOBCalixC6 (NGS-MCU), and a blend of radiologically clean NGS and radiologically contaminated BOBCalixC6 from the MCU Solvent system. The results from the tests indicate that both the NGS and the NGS-MCU blend exhibit adequate extraction, scrub and strip behavior.

Peters, T. B.; Washington, A. L. II

2013-08-08T23:59:59.000Z

495

SAMPLE RESULTS FROM THE NEXT GENERATION SOLVENT PROGRAM REAL WASTE EXTRACTION-SCRUB-STRIP TESTING  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed multiple Extraction-Scrub-Strip (ESS) testing using real waste solutions, and three Next Generation Solvent (NGS) variations, which included radiologically clean pure NGS, a blend of radiologically clean NGS and radiologically clean BOBCalixC6 (NGS-MCU), and a blend of radiologically clean NGS and radiologically contaminated BOBCalixC6 from the MCU Solvent system. The results from the tests indicate that both the NGS and the NGS-MCU blend exhibit adequate extraction, scrub and strip behavior.

Peters, T.; Washington, A.

2013-06-03T23:59:59.000Z

496

The extraction of bitumen from western tar sands. Annual report, July 1990--July 1991  

SciTech Connect (OSTI)

Contents of this report include the following: executive summary; characterization of the native bitumen from the Whiterocks oil sand deposit; influence of carboxylic acid content on bitumen viscosity; water based oil sand separation technology; extraction of bitumen from western oil sands by an energy-efficient thermal method; large- diameter fluidized bed reactor studies; rotary kiln pyrolysis of oil sand; catalytic upgrading of bitumen and bitumen derived liquids; ebullieted bed hydrotreating and hydrocracking; super critical fluid extraction; bitumen upgrading; 232 references; Appendix A--Whiterocks tar sand deposit bibliography; Appendix B--Asphalt Ridge tar sand deposit bibliography; and Appendix C--University of Utah tar sands bibliography.

Oblad, A.G.; Bunger, J.W.; Deo, M.D.; Hanson, F.V.; Miller, J.D.; Seader, J.D.

1992-04-01T23:59:59.000Z

497

AKUFVE studies on extraction behavior of neptunium from simulated HLW solutions by 30% TBP  

SciTech Connect (OSTI)

The extraction behavior of neptunium from 3 M nitric acid as well as simulated pressurized heavy water reactor high level radioactive waste (PHWR-HLW) solution by 30% TBP/dodecane was studied using AKUFVE. Np(IV)/Np(V) was oxidized to Np(VI) using oxidizing agents, such as K{sub 2}Cr{sub 2}O{sub 7}, VO{sub 2}{sup +} and NaNO{sub 2}. Stripping of neptunium from the loaded TBP phase was studied using reducing agents like hydrogen peroxide, ascorbic acid, hydroxylamine hydrochloride and hydrazine sulfate. Results of these extraction and stripping studies have been discussed in this paper.

Chitnis, R.R.; Wattal, P.K.; Murali, M.S.; Nair, G.C.; Mathur, J.N. [Bhabha Atomic Research Centre, Bombay (India)

1998-07-01T23:59:59.000Z

498

Factors Controlling Redox Speciation of Plutonium and Neptunium in Extraction Separation Processes  

SciTech Connect (OSTI)

The objective of the project was to examine the factors controlling redox speciation of plutonium and neptunium in UREX+ extraction in terms of redox potentials, redox mechanism, kinetics and thermodynamics. Researchers employed redox-speciation extractions schemes in parallel to the spectroscopic experiments. The resulting distribution of redox species w studied uring spectroscopic, electrochemical, and spectro-electrochemical methods. This work reulted in collection of data on redox stability and distribution of redox couples in the nitric acid/nitrate electrolyte and the development of redox buffers to stabilize the desired oxidation state of separated radionuclides. The effects of temperature and concentrations on the redox behavior of neptunium were evaluated.

Paulenova, Alena [Principal Investigator; Vandegrift, III, George F. [Collaborator

2013-09-24T23:59:59.000Z

499

Liquid-liquid extraction as the means of refining cottonseed oil  

E-Print Network [OSTI]

LIBRARY A 4 AI CvLLEGE OF TEXAS LIOVID-LIQUID EXTRACTION AS THE MEANS OI REFINING CCTTONSEFZ OIL A Thesis By 1'RVUBHAI CHIINIBHAI PATEL a 0 U z A R 0 Submitted to the Graduate School of the Agricultural and Mechanical College of Texas... in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Auuust 1996 Major Subject Chemical ineeri LIQUID-LIQUID EXTRACTION AS THE MEANS OF REFINING COTTONSEED OIL A Thesis By MANUBHAI CHUNIBHAI PATEL Approved as to style...

Patel, Manubhai Chunibhai

2012-06-07T23:59:59.000Z

500

H{sup -} beam extraction from a cesium seeded field effect transistor based radio frequency negative hydrogen ion source  

SciTech Connect (OSTI)

H{sup -} beam was successfully extracted from a cesium seeded ion source operated using a field effect transistor inverter power supply as a radio frequency (RF) wave source. High density hydrogen plasma more than 10{sup 19} m{sup -3} was obtained using an external type antenna with RF frequency of lower than 0.5 MHz. The source was isolated by an isolation transformer and H{sup -} ion beam was extracted from a single aperture. Acceleration current and extraction current increased with the increase of extraction voltage. Addition of a small amount of cesium vapor into the source enhanced the currents.

Ando, A.; Matsuno, T.; Funaoi, T.; Tanaka, N. [School of Engineering, Tohoku University, Sendai 980-8579 (Japan); Tsumori, K.; Takeiri, Y. [National Institute for Fusion Science, Toki 509-5292 (Japan)

2012-02-15T23:59:59.000Z