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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
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1

MICROSTRUCTURE AND PROPERTIES OF DUAL PHASE STEELS CONTAINING FINE PRECIPITATES  

E-Print Network [OSTI]

and Properties of Dual-Phase Steels, R. A. Kot and J. W.of Niobium Microalloyed Dual- Phase Steel, MetallurgicalAND PROPERTIES OF DUAL PHASE STEELS CONTAINING FINE

Gau, J.S.

2014-01-01T23:59:59.000Z

2

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

E-Print Network [OSTI]

AND MICROSTRUCTURES OF DUAL PHASE STEELS CONTAINING SILICON,and Microstructures of Dual Phase Steels Containing Silicon,microstructures of selected dual-phase steels in which the

Neill, Thomas John O'

2011-01-01T23:59:59.000Z

3

EFFECTS OF MORPHOLOGY ON THE MECHANICAL BEHAVIOR OF DUAL PHASE Fe/Si/C STEELS  

E-Print Network [OSTI]

and ductility in dual phase steels. However, it seems thatmechanical behavior of dual phase steels. ACKNOWLEDGEMENTSL INTRODUCTION Dual phase steels whose structures consist of

Kim, N.J.

2012-01-01T23:59:59.000Z

4

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...

5

DESIGN OF DUAL PHASE Fe/Mn/C STEEL FOR LOW TEMPERATURE APPLICATION  

E-Print Network [OSTI]

and Properties of Dual- Phase Steels, R. A. Kot and J. \\4.and Properties of Dual Phase Steels, R. A. Kot and J. W. ~Formable HSLA and Dual- Phase Steels, A. T. Davenport, ed. ,

Kim, Nack-Joon

2013-01-01T23:59:59.000Z

6

CARBON ATOM DISTRIBUTION IN A DUAL PHASE STEEL: AN ATOM PROBE STUDY  

E-Print Network [OSTI]

ATOM DISTRIBUTION IN A DUAL PHASE STEEL: AN ATOM PROBE STUDY~4720 1 U.S.A. IntroductioE. Dual Phase steels are currentlymartensite-austenite dual phase steel, although the results

Barnard, S.J.

2014-01-01T23:59:59.000Z

7

Dual-Phase Hot-Press Forming Alloy  

E-Print Network [OSTI]

of the fully martensitic alloys; In terms of uniform elongation, the dualツュphase steel significantly outperformsDual-Phase Hot-Press Forming Alloy Hongliang Yi and H. K. D. H. Bhadeshia 23 April, 2010Non-propagating cracks in ferrite 840 oC 880 oC #12;Conclusion 6 ツキ Conventional HPF steels: fully martensitic ツキ Novel

Cambridge, University of

8

DESIGN OF DUAL PHASE Fe/Mn/C STEEL FOR LOW TEMPERATURE APPLICATION  

E-Print Network [OSTI]

and Properties of Dual- Phase Steels, R. A. Kot and J. \\4.Properties of Dual Phase Steels, R. A. Kot and J. W. ~lorrisand Hardenability in Steels, Symp. ASt~. ~. Garvey, Trans.

Kim, Nack-Joon

2013-01-01T23:59:59.000Z

9

EFFECT OF VANADIUM ON STRUCTURE-PROPERTY RELATIONS OF DUAL PHASE Fe/Mn/Si/0.lC STEELS  

E-Print Network [OSTI]

Formable HSLA and Dual Phase Steels, Proceedings of AIME,and Properties of Dual Phase Steels, Proceedings of Aifv1E,in intercritically annealed dual phase steels. Many of the

Nakagawa, Alvin

2014-01-01T23:59:59.000Z

10

DUAL PHASE MEMBRANE FOR HIGH TEMPERATURE CO2 SEPARATION  

SciTech Connect (OSTI)

This project is intended to expand upon the previous year's research en route to the development of a sustainable dual phase membrane for CO{sub 2} separation. It was found that the pores within the supports had to be less than 9 {micro}m in order to maintain the stability of the dual phase membrane. Pores larger than 9 {micro}m would be unable to hold the molten carbonate phase in place, rendering the membrane ineffective. Calculations show that 80% of the pore volume of the 0.5 media grade metal support was filled with the molten carbonate. Information obtained from EDS and SEM confirmed that the molten carbonate completely infiltrated the pores on both the contact and non-contact size of the metal support. Permeation tests for CO{sub 2} and N{sub 2} at 450-750 C show very low permeance of those two gases through the dual phase membrane, which was expected due to the lack of ionization of those two 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 quite rapidly, while predictions showed that permeance should have continued to increase. XRD data obtained form the surface of the membrane indicated the formation of lithium iron oxides on the support. This layer has a very low conductivity, which drastically reduces the flow of electrons to the CO{sub 2}/O{sub 2} gas mixture, limiting the formation of the ionic species. These results indicate that the use of stainless steel supports in a high temperature oxidative environment can lead to decreased performance of the membranes. This revelation has created the need for an oxidation resistant support, which can be gained by the use of a ceramic-type membrane. Future research efforts will be directed towards preparation of a new ceramic-carbonate dual phase membrane. The membrane will based on an oxide ceramic support that has an oxidation resistance better than the metal support and high electronic conductivity (1200-1500 S/cm) in the interested temperature range (400-600 C).

Jerry Y.S. Lin; Seungjoon Chung; Matthew Anderson

2005-12-01T23:59:59.000Z

11

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

12

Dual Phase Membrane for High temperature CO2 Separation  

SciTech Connect (OSTI)

Research in the previous years in this project found that stainless steel supports are oxidized during high temperature, dual phase membrane separation of carbon dioxide (with oxygen). Consequently, a new material has been sought to alleviate the problems with oxidation. Lanthanum cobaltite oxide is a suitable candidate for the support material in the dual phase membrane due to its oxidation resistance and electronic conductivity. Porous lanthanum cobaltite membranes were prepared via the citrate method, using nitrate metal precursors as the source of La, Sr, Co and Fe. The material was prepared and ground into a powder, which was subsequently pressed into disks for sintering at 900 C. Conductivity measurements were evaluated using the four-probe DC method. Support pore size was determined by helium permeation. Conductivity of the lanthanum cobaltite material was found to be at a maximum of 0.1856 S/cm at 550 C. The helium permeance of the lanthanum cobaltite membranes for this research was on the order of 10{sup -6} moles/m{sup 2} {center_dot} Pa {center_dot} s, proving that the membranes are porous after sintering at 900 C. The average pore size based on steady state helium permeance measurements was found to be between 0.37 and 0.57 {micro}m. The lanthanum cobaltite membranes have shown to have desired porosity, pore size and electric conductivity as the support for the dual-phase membranes. Molten carbonate was infiltrated to the pores of lanthanum cobaltite membranes support. After infiltration with molten carbonate, the helium permeance of the membranes decreased by three orders of magnitude to 10{sup -9} moles/m{sup 2} {center_dot} Pa {center_dot} s. This number, however, is one order of magnitude larger than the room temperate permeance of the stainless steel supports after infiltration with molten carbonate. Optimization of the dip coating process with molten carbonate will be evaluated to determine if lower permeance values can be obtained with the lanthanum cobaltite membrane supports.

Jerry Y.S. Lin; Matthew Anderson

2005-12-01T23:59:59.000Z

13

Dual Phase Membrane for High Temperature CO2 Separation  

SciTech Connect (OSTI)

Dual-phase membranes consisting of stainless steel supports infiltrated with molten carbonate have been shown to be selective to CO{sub 2} at high temperatures (400-650 C). However, over time at high temperatures, the formation of iron oxides on the surface of the stainless steel supports render the membranes ineffective. This report details synthesis and characteristics of dual-phase carbonate membrane with an oxidation resistant perovskite type ceramic (lanthanum-strontium-cobaltite-iron; LSCF) support. Porous LSCF supports were prepared from its powder synthesized by the citrate method. Both steady state permeation and mercury porosimetry confirmed that the LSCF membrane sintered at 900 C has pores large enough to absorb molten carbonate, yet small enough to retain the molten carbonate under high pressure conditions. Results of XRD analysis have shown that LSCF and the molten carbonate mixture do not react with each other at temperatures below 700 C. Four-point method conductivity tests indicate that the support material has sufficiently high electronic conductivity for this application. Li-Na-K carbonate was coated to the porous LSCF support by a liquid infiltration method. 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. Preliminary high temperature permeation experiments indicate that the membrane does separate CO{sub 2} in the presence of O{sub 2}, with a maximum flux of 0.623 ml/cm{sup 2} {center_dot} min obtained at 850 C.

Jerry Y.S. Lin; Matthew Anderson

2006-09-29T23:59:59.000Z

14

Effects of quenching and tempering on the microstructure and bake hardening behavior of ferrite and dual phase steels  

E-Print Network [OSTI]

and dual phase steels C.F. Kuang a,n , J. Li b , S.G. Zhang a , J. Wang b , H.F. Liu b , A.A. Volinsky c online 3 July 2014 Keywords: Bake hardening Quenching Tempering Dual phase steel a b s t r a c of both ferrite and dual phase steels were investigated. The CツュMn steels were heated to the soaking

Volinsky, Alex A.

15

Pre-Combustion Carbon Dioxide Capture by a New Dual Phase Ceramic-Carbonate Membrane Reactor  

SciTech Connect (OSTI)

This report documents synthesis, characterization and carbon dioxide permeation and separation properties of a new group of ceramic-carbonate dual-phase membranes and results of a laboratory study on their application for water gas shift reaction with carbon dioxide separation. A series of ceramic-carbonate dual phase membranes with various oxygen ionic or mixed ionic and electronic conducting metal oxide materials in disk, tube, symmetric, and asymmetric geometric configurations was developed. These membranes, with the thickness of 10 ?m to 1.5 mm, show CO2 permeance in the range of 0.5-5ラ10-7 molキm-2キs-1キPa-1 in 500-900oC and measured CO2/N2 selectivity of up to 3000. CO2 permeation mechanism and factors that affect CO2 permeation through the dual-phase membranes have been identified. A reliable CO2 permeation model was developed. A robust method was established for the optimization of the microstructures of ceramic-carbonate membranes. The ceramic-carbonate membranes exhibit high stability for high temperature CO2 separations and water gas shift reaction. Water gas shift reaction in the dual-phase membrane reactors was studied by both modeling and experiments. It is found that high temperature syngas water gas shift reaction in tubular ceramic-carbonate dual phase membrane reactor is feasible even without catalyst. The membrane reactor exhibits good CO2 permeation flux, high thermal and chemical stability and high thermal shock resistance. Reaction and separation conditions in the membrane reactor to produce hydrogen of 93% purity and CO2 stream of >95% purity, with 90% CO2 capture have been identified. Integration of the ceramic-carbonate dual-phase membrane reactor with IGCC process for carbon dioxide capture was analyzed. A methodology was developed to identify optimum operation conditions for a membrane tube of given dimensions that would treat coal syngas with targeted performance. The calculation results show that the dual-phase membrane reactor could improve IGCC process efficiency but the cost of the membrane reactor with membranes having current CO2 permeance is high. Further research should be directed towards improving the performance of the membranes and developing cost-effective, scalable methods for fabrication of dual-phase membranes and membrane reactors.

Lin, Jerry

2014-09-30T23:59:59.000Z

16

Mod\\'elisation multidomaine du comportement magn\\'eto-m\\'ecanique des aciers dual-phases  

E-Print Network [OSTI]

The microstructure and mechanical behavior of dual-phase steels are highly sensitive to the variation of the process (heat treatments). Online control by magnetic method is relevant. A measurement under applied stress must be considered. The dual-phase is a two-phase medium (ferrite / martensite). Each phase can be considered as a sphere embedded in a homogeneous equivalent medium. The model used for each phase is based on a magneto-mechanical coupled model. This is an explicit single crystalline model representative of the behavior of the corresponding phase. Localization rules allow the simulation of the two-phases medium. Experiments and modeling are compared.

Mballa, Frederick Mballa; Lazreg, Said; Meilland, Philip

2011-01-01T23:59:59.000Z

17

Microstructural Origins of Variability in the Tensile Ductility of Dual Phase Steels Claire Teresi, Clemson University, SURF Fellow  

E-Print Network [OSTI]

Microstructural Origins of Variability in the Tensile Ductility of Dual Phase Steels Claire Teresi Introduction: Dual phase (DP) steels are a class of advanced high strength structural steels that also have automotive applications. Generally composed of two primary phases- martensite and ferrite- these steels have

Li, Mo

18

Dual Phase Li4 Ti5O12傍iO2 Nanowire Arrays As Integrated...  

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

Phase Li4 Ti5O12傍iO2 Nanowire Arrays As Integrated Anodes For High-rate Lithium-ion Batteries. Dual Phase Li4 Ti5O12傍iO2 Nanowire Arrays As Integrated Anodes For...

19

DualPhase HotPress Forming Alloy H. K. D. H. Bhadeshia a,b  

E-Print Network [OSTI]

steels, before transfer into the forming press. Key words: Hot pressツュforming, dual phase steel. There are many varieties of such steels, for example those which are TRIPツュassisted [1ツュ6] or the dualツュphase steels that subsequent quenching leads to a dualツュphase steel. A potential advantage of this mixture of allotriomorphic

Cambridge, University of

20

A study of localisation in dual phase high-strength steels under dynamic loading using digital image correlation and FE analysis  

E-Print Network [OSTI]

1 A study of localisation in dual phase high-strength steels under dynamic loading using digital conducted on dual-phase high-strength steel in a split-Hopkinson tension bar at a strain-rate in the range-speed photography, localisation, dual-phase high strength-steel, split- Hopkinson bar, photomechanics, elasto

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

A study of localisation in dual phase high-strength steels under dynamic loading using digital image correlation and FE analysis  

E-Print Network [OSTI]

1 A study of localisation in dual phase high-strength steels under dynamic loading using digital of an elasto-viscoplastic constitutive model for the dual-phase steel is provided in terms of its ability for the shell element analysis. Keywords: high-speed photography, localisation, dual-phase high strength-steel

Paris-Sud XI, Universitテゥ de

22

Nitrogen-sensitized dual phase titanate/titania for visible-light driven phenol degradation  

SciTech Connect (OSTI)

A dual-phase material (DP-160) comprising hydrated titanate (H{sub 2}Ti{sub 3}O{sub 7}{center_dot}xH{sub 2}O) and anatase (TiO{sub 2}) was synthesized in a low-temperature one-pot process in the presence of triethylamine (TEA) as the N-source. The unique structure exhibits strong visible light absorption. The chromophore is linked to Ti-N bonds derived from both surface sensitization and sub-surface (bulk) doping. From transmission electron microscope (TEM) and textural studies by N{sub 2} physisorption, the composite exists as mesoporous particles with a grain size of {approx}20 nm and mean pore diameter of 3.5 nm, responsible for the high surface area ({approx}180 m{sup 2}/g). DP-160 demonstrated photocatalytic activity in the degradation of phenol under visible light ({lambda}>420 nm). The activity of the composite was further enhanced by a small addition (0.001 M) of H{sub 2}O{sub 2}, which also gave rise to some visible light activity in the control samples. This effect is believed to be associated with the surface peroxo-titanate complex. GC-MS analyses showed that the intermediate products of phenol degradation induced by visible light irradiation of DP-160 did not differ from those obtained by UV (band-gap) irradiation of TiO{sub 2}. The overall performance of the composite is attributed to efficient excitation via inter-band states (due to N-doping), surface sensitization, improved adsorptive properties of aromatic compounds due to the N-carbonaceous overlayer, and the presence of heterojunctions that are known to promote directional charge transfer in other mixed-phase titanias like Degussa P25. - graphical abstract: Nitrogen-sensitized dual phase titanate/titania photocatalyst showing extended visible light absorption and efficient photocatalytic degradation of phenol. Highlights: Black-Right-Pointing-Pointer Low temperature one-pot synthesis of visible light active dual phase photocatalyst. Black-Right-Pointing-Pointer The dual phase consists of nanoscale titanate and anatase titania phases. Black-Right-Pointing-Pointer The photocatalyst displays high activity in degrading phenol under visible light. Black-Right-Pointing-Pointer Mechanisms for the sensitization to visible light are considered.

Cheng, Yu Hua; Subramaniam, Vishnu P.; Gong, Dangguo; Tang, Yuxin [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)] [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore); Highfield, James, E-mail: James_Highfield@ices.a-star.edu.sg [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore)] [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore); Pehkonen, Simo O. [Chemical Engineering Program, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi (United Arab Emirates)] [Chemical Engineering Program, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi (United Arab Emirates); Pichat, Pierre [Photocatalyse et Environnement, CNRS/Ecole Centrale de Lyon (STMS), 69134 Ecully Cedex (France)] [Photocatalyse et Environnement, CNRS/Ecole Centrale de Lyon (STMS), 69134 Ecully Cedex (France); Schreyer, Martin K. [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore)] [Institute of Chemical and Engineering Sciences 1 Pesek Road, Jurong Island, Singapore 627833 (Singapore); Chen, Zhong, E-mail: aszchen@ntu.edu.sg [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)] [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore)

2012-12-15T23:59:59.000Z

23

High strength, low carbon, dual phase steel rods and wires and process for making same  

DOE Patents [OSTI]

A high strength, high ductility, low carbon, dual phase steel wire, bar or rod and process for making the same is provided. The steel wire, bar or rod is produced by cold drawing to the desired diameter in a single multipass operation a low carbon steel composition characterized by a duplex microstructure consisting essentially of a strong second phase dispersed in a soft ferrite matrix with a microstructure and morphology having sufficient cold formability to allow reductions in cross-sectional area of up to about 99.9%. Tensile strengths of at least 120 ksi to over 400 ksi may be obtained.

Thomas, Gareth (Berkeley, CA); Nakagawa, Alvin H. (Campbell, CA)

1986-01-01T23:59:59.000Z

24

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.

Thomas, Gareth (Berkeley, CA); Ahn, Jae-Hwan (Albany, CA); Kim, Nack-Joon (Laramie, WY)

1986-01-01T23:59:59.000Z

25

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

26

Microstructure and properties of pipeline steel with a ferrite/martensite dual-phase microstructure  

SciTech Connect (OSTI)

In order to satisfy the transportation of the crude oil and gas in severe environmental conditions, a ferrite/martensite dual-phase pipeline steel has been developed. After a forming process and double submerged arc welding, the microstructure of the base metal, heat affected zone and weld metal was characterized using scanning electron microscopy and transmission electron microscopy. The pipe showed good deformability and an excellent combination of high strength and toughness, which is suitable for a pipeline subjected to the progressive and abrupt ground movement. The base metal having a ferrite/martensite dual-phase microstructure exhibited excellent mechanical properties in terms of uniform elongation of 7.5%, yield ratio of 0.78, strain hardening exponent of 0.145, an impact energy of 286 J at - 10 deg. C and a shear area of 98% at 0 deg. C in the drop weight tear test. The tensile strength and impact energy of the weld metal didn't significantly reduce, because of the intragranularly nucleated acicular ferrites microstructure, leading to high strength and toughness in weld metal. The heat affected zone contained complete quenching zone and incomplete quenching zone, which exhibited excellent low temperature toughness of 239 J at - 10 deg. C. - Research Highlights: {yields}The pipe with ferrite/martensite microstructure shows high deformability. {yields}The base metal of the pipe consists of ferrite and martensite. {yields}Heat affected zone shows excellent low temperature toughness. {yields}Weld metal mainly consists of intragranularly nucleated acicular ferrites. {yields}Weld metal shows excellent low temperature toughness and high strength.

Li Rutao, E-mail: lrt851@126.com; Zuo Xiurong, E-mail: zuoxiurong@126.com; Hu Yueyue, E-mail: hucheng85@126.com; Wang Zhenwei, E-mail: wzw0530@126.com; Hu, Dingxu, E-mail: xiaohu369@163.com

2011-08-15T23:59:59.000Z

27

A study of large plastic deformations in dual phase steel using digital image correlation and FE analysis  

E-Print Network [OSTI]

1 A study of large plastic deformations in dual phase steel using digital image correlation and FE phase steel DP800 is studied experimentally and numerically. Shear testing is applied to obtain large Materials and Chemistry, NO-7465 Trondheim, Norway Abstract Large plastic deformation in sheets made of dual

Paris-Sud XI, Universitテゥ de

28

Reductive Dehalogenation of Trichloroethene Vapors in an  

E-Print Network [OSTI]

to treat trichloroethene (TCE) from waste gases generated by soil vapor extraction or dual-phase extraction through the recirculating liquid as a source of hydrogen, the electron donor for Dehalococcoides strains (DPE) (4). However, these techniques result in a waste gas stream that needs further treatment. Several

29

Dual Phase Li4 Ti5O12傍iO2 Nanowire Arrays As Integrated Anodes For High-rate Lithium-ion Batteries  

SciTech Connect (OSTI)

Lithium titanate (Li4Ti5O12) is well known as a zero strain material inherently, which provides excellent long cycle stability as a negative electrode for lithium ion batteries. However, the low specific capacity (175 mA h g?1) limits it to power batteries although the low electrical conductivity is another intrinsic issue need to be solved. In this work, we developed a facile hydrothermal and ion-exchange route to synthesize the self-supported dual-phase Li4Ti5O12傍iO2 nanowire arrays to further improve its capacity as well as rate capability. The ratio of Li4Ti5O12 to TiO2 in the dual phase Li4Ti5O12傍iO2 nanowire is around 2:1. The introduction of TiO2 into Li4Ti5O12 increases the specific capacity. More importantly, by interface design, it creates a dual-phase nanostructure with high grain boundary density that facilitates both electron and Li ion transport. Compared with phase-pure nanowire Li4Ti5O12 and TiO2 nanaowire arrays, the dual-phase nanowire electrode yielded superior rate capability (135.5 at 5 C, 129.4 at 10 C, 120.2 at 20 C and 115.5 mA h g?1 at 30 C). In-situ transmission electron microscope clearly shows the near zero deformation of the dual phase structure, which explains its excellent cycle stability.

Liao, Jin; Chabot, Victor; Gu, Meng; Wang, Chong M.; Xiao, Xingcheng; Chen, Zhongwei

2014-08-19T23:59:59.000Z

30

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

31

Fluid extraction  

DOE Patents [OSTI]

A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a supercritical fluid solvent containing a chelating agent is described. The chelating agent forms chelates that are soluble in the supercritical fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is a fluorinated .beta.-diketone. In especially preferred embodiments the extraction solvent is supercritical carbon dioxide, and the chelating agent comprises a fluorinated .beta.-diketone and a trialkyl phosphate, or a fluorinated .beta.-diketone and a trialkylphosphine oxide. Although a trialkyl phosphate can extract lanthanides and actinides from acidic solutions, a binary mixture comprising a fluorinated .beta.-diketone and a trialkyl phosphate or a trialkylphosphine oxide tends to enhance the extraction efficiencies for actinides and lanthanides. The method provides an environmentally benign process for removing contaminants from industrial waste without using acids or biologically harmful solvents. The method is particularly useful for extracting actinides and lanthanides from acidic solutions. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Laintz, Kenneth E. (Los Alamos, NM)

1999-01-01T23:59:59.000Z

32

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

33

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

34

Apparatus for hydrocarbon extraction  

DOE Patents [OSTI]

Systems and methods for hydrocarbon extraction from hydrocarbon-containing material. Such systems and methods relate to extracting hydrocarbon from hydrocarbon-containing material employing a non-aqueous extractant. Additionally, such systems and methods relate to recovering and reusing non-aqueous extractant employed for extracting hydrocarbon from hydrocarbon-containing material.

Bohnert, George W.; Verhulst, Galen G.

2013-03-19T23:59:59.000Z

35

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...

36

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

37

Protection of Li Anodes Using Dual Phase Electrolytes | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L dDepartment of Energy 0 DOE VehicleProposedofEnergy 1 DOE

38

Protection of Li Anodes Using Dual Phase Electrolytes | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L dDepartment of Energy 0 DOE VehicleProposedofEnergy 1

39

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

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched5 Industrial Carbon Capture and Storageconvert 2 3 DEPARTMENT OFDryNovel

40

Information extraction system  

DOE Patents [OSTI]

An information extraction system and methods of operating the system are provided. In particular, an information extraction system for performing meta-extraction of named entities of people, organizations, and locations as well as relationships and events from text documents are described herein.

Lemmond, Tracy D; Hanley, William G; Guensche, Joseph Wendell; Perry, Nathan C; Nitao, John J; Kidwell, Paul Brandon; Boakye, Kofi Agyeman; Glaser, Ron E; Prenger, Ryan James

2014-05-13T23:59:59.000Z

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

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

42

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

43

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

44

Extraction Utility Design Specification  

Energy Savers [EERE]

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...

45

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

46

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

47

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

48

Supercritical fluid extraction  

DOE Patents [OSTI]

A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a supercritical fluid solvent containing a chelating agent. The chelating agent forms chelates that are soluble in the supercritical fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is a fluorinated or lipophilic crown ether or fluorinated dithiocarbamate. The method provides an environmentally benign process for removing contaminants from industrial waste without using acids or biologically harmful solvents. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Laintz, Kenneth (Pullman, WA)

1994-01-01T23:59:59.000Z

49

Fission product solvent extraction  

SciTech Connect (OSTI)

Two main objectives concerning removal of fission products from high-level tank wastes will be accomplished in this project. The first objective entails the development of an acid-side Cs solvent-extraction (SX) process applicable to remediation of the sodium-bearing waste (SBW) and dissolved calcine waste (DCW) at INEEL. The second objective is to develop alkaline-side SX processes for the combined removal of Tc, Cs, and possibly Sr and for individual separation of Tc (alone or together with Sr) and Cs. These alkaline-side processes apply to tank wastes stored at Hanford, Savannah River, and Oak Ridge. This work exploits the useful properties of crown ethers and calixarenes and has shown that such compounds may be economically adapted to practical processing conditions. Potential benefits for both acid- and alkaline-side processing include order-of-magnitude concentration factors, high rejection of bulk sodium and potassium salts, and stripping with dilute (typically 10 mM) nitric acid. These benefits minimize the subsequent burden on the very expensive vitrification and storage of the high-activity waste. In the case of the SRTALK process for Tc extraction as pertechnetate anion from alkaline waste, such benefits have now been proven at the scale of a 12-stage flowsheet tested in 2-cm centrifugal contactors with a Hanford supernatant waste simulant. SRTALK employs a crown ether in a TBP-modified aliphatic kerosene diluent, is economically competitive with other applicable separation processes being considered, and has been successfully tested in batch extraction of actual Hanford double-shell slurry feed (DSSF).

Moyer, B.A.; Bonnesen, P.V.; Sachleben, R.A. [and others

1998-02-01T23:59:59.000Z

50

Extracting the Eliashberg Function  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhanced Oil RecoveryExtracellularExtracting the

51

Extracting the Eliashberg Function  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhanced Oil RecoveryExtracellularExtracting

52

Extracting the Eliashberg Function  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhanced OilExtracting the Eliashberg Function

53

Extracting the Eliashberg Function  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing ZirconiaPolicy andExsolution Enhanced OilExtracting the Eliashberg

54

Extraction Utility Design Specification  

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector General Office of Audit|Department of Energy56Executive212-2012 June 2012Extraction Utility

55

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

56

Actinide extraction methods  

DOE Patents [OSTI]

Methods of separating actinides from lanthanides are disclosed. A regio-specific/stereo-specific dithiophosphinic acid having organic moieties is provided in an organic solvent that is then contacted with an acidic medium containing an actinide and a lanthanide. The method can extend to separating actinides from one another. Actinides are extracted as a complex with the dithiophosphinic acid. Separation compositions include an aqueous phase, an organic phase, dithiophosphinic acid, and at least one actinide. The compositions may include additional actinides and/or lanthanides. A method of producing a dithiophosphinic acid comprising at least two organic moieties selected from aromatics and alkyls, each moiety having at least one functional group is also disclosed. A source of sulfur is reacted with a halophosphine. An ammonium salt of the dithiophosphinic acid product is precipitated out of the reaction mixture. The precipitated salt is dissolved in ether. The ether is removed to yield the dithiophosphinic acid.

Peterman, Dean R. (Idaho Falls, ID) [Idaho Falls, ID; Klaehn, John R. (Idaho Falls, ID) [Idaho Falls, ID; Harrup, Mason K. (Idaho Falls, ID) [Idaho Falls, ID; Tillotson, Richard D. (Moore, ID) [Moore, ID; Law, Jack D. (Pocatello, ID) [Pocatello, ID

2010-09-21T23:59:59.000Z

57

Extraction chromatography: Progress and opportunities  

SciTech Connect (OSTI)

Extraction chromatography provides a simple and effective method for the analytical and preparative-scale separation of a variety of metal ions. Recent advances in extractant design, particularly the development of extractants capable of metal ion recognition or of strong complex formation in highly acidic media, have significantly improved the utility of the technique. Advances in support design, most notably the introduction of functionalized supports to enhance metal ion retention, promise to yield further improvements. Column instability remains a significant obstacle, however, to the process-scale application of extraction chromatography. 79 refs.

Dietz, M.L.; Horwitz, E.P.; Bond, A.H. [Argonne National Lab., IL (United States). Chemistry Div.

1997-10-01T23:59:59.000Z

58

Passive vapor extraction feasibility study  

SciTech Connect (OSTI)

Demonstration of a passive vapor extraction remediation system is planned for sites in the 200 West Area used in the past for the disposal of waste liquids containing carbon tetrachloride. The passive vapor extraction units will consist of a 4-in.-diameter pipe, a check valve, a canister filled with granular activated carbon, and a wind turbine. The check valve will prevent inflow of air that otherwise would dilute the soil gas and make its subsequent extraction less efficient. The granular activated carbon is used to adsorb the carbon tetrachloride from the air. The wind turbine enhances extraction rates on windy days. Passive vapor extraction units will be designed and operated to meet all applicable or relevant and appropriate requirements. Based on a cost analysis, passive vapor extraction was found to be a cost-effective method for remediation of soils containing lower concentrations of volatile contaminants. Passive vapor extraction used on wells that average 10-stdft{sup 3}/min air flow rates was found to be more cost effective than active vapor extraction for concentrations below 500 parts per million by volume (ppm) of carbon tetrachloride. For wells that average 5-stdft{sup 3}/min air flow rates, passive vapor extraction is more cost effective below 100 ppm.

Rohay, V.J.

1994-06-30T23:59:59.000Z

59

Liquid-Liquid Extraction Processes  

E-Print Network [OSTI]

Liquid-liquid extraction is the separation of one or more components of a liquid solution by contact with a second immiscible liquid called the solvent. If the components in the original liquid solution distribute themselves differently between...

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

1983-01-01T23:59:59.000Z

60

Hot water bitumen extraction process  

SciTech Connect (OSTI)

This patent describes a method of extracting bitumen oils from tar-sands ore. It includes an initial conditioning step comprising crushing tar-sands ore to yield solid particles of a maximum size required by a log washer conditioner in a second conditioning step; a bitumen extraction step; a bitumen separation step; a solvent recovery step; a sand washing and water clarification step; and a sand solvent recovery step.

Rendall, J.S.

1989-10-24T23:59:59.000Z

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.


61

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...

62

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

63

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

64

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

65

Uranium Ore Uranium is extracted  

E-Print Network [OSTI]

Milling of Uranium Ore Uranium is extracted from ore with strong acids or bases. The uranium is concentrated in a solid substance called"yellowcake." Chemical Conversion Plants convert the uranium in yellowcake to uranium hexafluoride (UF6 ), a compound that can be made into nuclear fuel. Enrichment

66

Parallel algorithms for inductance extraction  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . . . . . . . . . 30 3. Pin Connect . . . . . . . . . . . . . . . . . . . . . . . . . 31 C. The Inductance Extraction Algorithm . . . . . . . . . . . . . . 33 ix CHAPTER Page V COMPARISON WITH EXISTING WORK . . . . . . . . . . . . . 35 A. Ground Plane... . . . . . . . . . . . . . . . . . . . . . . . 52 1. Shared Memory Parallelization . . . . . . . . . . . . . . . 53 2. Mixed Mode Parallelization . . . . . . . . . . . . . . . . . 55 3. Distributed Memory Parallelization . . . . . . . . . . . . . 56 VII CONCLUSIONS...

Mahawar, Hemant

2007-09-17T23:59:59.000Z

67

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

68

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

69

Dual Phase, Co-Continuous Morphology from Mixtures of Recycled Polystyrene/Curbside Tailings Materials  

E-Print Network [OSTI]

electron microscopy is interlocked and co-continuous, forming a three dimensional interpenetrating network L.W. Suttner Rheometrics, Inc. Paper No.292 Introduction Virtually all studies of polymer mixtures polymers are processed under the proper conditions of composition and viscosity, it may be possible

70

A framework to measure myocardial extracellular volume fraction using dual-phase low dose CT images  

SciTech Connect (OSTI)

Purpose: Myocardial extracellular volume fraction (ECVF) is a surrogate imaging biomarker of diffuse myocardial fibrosis, a hallmark of pathologic ventricular remodeling. Low dose cardiac CT is emerging as a promising modality to detect diffuse interstitial myocardial fibrosis due to its fast acquisition and low radiation; however, the insufficient contrast in the low dose CT images poses great challenge to measure ECVF from the image. Methods: To deal with this difficulty, the authors present a complete ECVF measurement framework including a point-guided myocardial modeling, a deformable model-based myocardium segmentation, nonrigid registration of pre- and post-CT, and ECVF calculation. Results: The proposed method was evaluated on 20 patients by two observers. Compared to the manually delineated reference segmentations, the accuracy of our segmentation in terms of true positive volume fraction (TPVF), false positive volume fraction (FPVF), and average surface distance (ASD), were 92.18% ア 3.52%,?0.31% ア 0.10%,?0.69 ア 0.14?mm, respectively. The interobserver variability measured by concordance correlation coefficient regarding TPVF, FPVF, and ASD were 0.95,?0.90,?0.94, respectively, demonstrating excellent agreement. Bland-Altman method showed 95% limits of agreement between ECVF at CT and ECVF at MR. Conclusions: The proposed framework demonstrates its efficiency, accuracy, and noninvasiveness in ECVF measurement and dramatically advances the ECVF at cardiac CT toward its clinical use.

Liu, Yixun; Summers, Ronald M.; Yao, Jianhua, E-mail: JYao@cc.nih.gov [Clinical Image Processing Service, Radiology and Imaging Sciences, NIH Clinical Center, Bethesda, Maryland 20892 (United States)] [Clinical Image Processing Service, Radiology and Imaging Sciences, NIH Clinical Center, Bethesda, Maryland 20892 (United States); Liu, Songtao; Sibley, Christopher T.; Bluemke, David A. [Radiology and Imaging Sciences, NIH Clinical Center, Bethesda, Maryland 20892-1182 and Molecular Biomedical Imaging Laboratory, National Institute of Biomedical Imaging and Bioengineering, NIH Clinical Center, Bethesda, Maryland 20892 (United States)] [Radiology and Imaging Sciences, NIH Clinical Center, Bethesda, Maryland 20892-1182 and Molecular Biomedical Imaging Laboratory, National Institute of Biomedical Imaging and Bioengineering, NIH Clinical Center, Bethesda, Maryland 20892 (United States); Nacif, Marcelo S. [Radiology and Imaging Sciences, NIH Clinical Center, Bethesda, Maryland 20892-1182 (United States)] [Radiology and Imaging Sciences, NIH Clinical Center, Bethesda, Maryland 20892-1182 (United States)

2013-10-15T23:59:59.000Z

71

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

72

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

73

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

74

Gauge Invariant Spectral Cauchy Characteristic Extraction  

E-Print Network [OSTI]

We present gauge invariant spectral Cauchy characteristic extraction. We compare gravitational waveforms extracted from a head-on black hole merger simulated in two different gauges by two different codes. We show rapid convergence, demonstrating both gauge invariance of the extraction algorithm and consistency between the legacy Pitt null code and the much faster Spectral Einstein Code (SpEC).

Casey J. Handmer; B駘a Szil疊yi; Jeffrey Winicour

2015-02-24T23:59:59.000Z

75

Solvent extraction of inorganic acids  

E-Print Network [OSTI]

the solution by a sim?. le process that is economically =ttrsctlve is of con- sider. ble interest~ Dilute "olution; of hydrochloric, nitric and sul- furic acid d; occur in many processes either alone or toga- th: r . 'he use of li. , uid-li~uid extraction...~~ram for hexyl c~rbitol- water-nitric acid 17 ~ Distribution die, r m for hoxl'' ca:-bitol- watcr-sulfur'c acid Table 1. . 'xperimental d ta of amyl alcohol-water-!!Cl Pa, e 33 2. Experimental data of isoamyl alcohol-water- HC1 34 3 ~ Cxperimental data...

Ysrael, Miguel Curie

1965-01-01T23:59:59.000Z

76

Extracting inorganics from scrap tires  

SciTech Connect (OSTI)

Scrap tires contain several inorganic moieties in abundances >0.5% which are impregnated into their carbonaceous matrix. These inorganic species are known to produce acid rain, toxic aerosols, and boiler scale and could produce unwanted catalytic effects as well. It is our position that the potential of recycling scrap tires would be considerably enhanced if the inorganics in question - S, Ca, and Zn - were removed prior to attempts to upgrade the carbonaceous matrix. Using non-mechanical methods, we are attempting to cleave the adherence between the co-polymer matrix and to extract the inorganics. The efficiency of our methods is being measured by wavelength dispersive x-ray spectrometry and by other methods.

Cummings, R.; Wertz, D.L. [Univ. of Southern Mississippi, Hattiesburg, MS (United States)

1995-12-31T23:59:59.000Z

77

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

78

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. 3 figs.

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

1992-12-08T23:59:59.000Z

79

Combined transuranic-strontium extraction process  

SciTech Connect (OSTI)

The transuranic (TRU) elements neptunium, plutonium and amercium 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 to gather with strontium, uranium and technetium. The TRU`s and the strontium can then be selectively stripped from the extractant for disposal.

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

1991-12-31T23:59:59.000Z

80

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...

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

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

82

Geothermal: Sponsored by OSTI -- Technologies for Extracting...  

Office of Scientific and Technical Information (OSTI)

Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us HomeBasic Search About...

83

Accelerated solvent extraction of petroleum contaminated sediments.  

E-Print Network [OSTI]

??Attempts have been made in recent years to find acceptable alternatives to classical soxhlet extraction of petroleum contaminated sediments. One such method that is very (more)

Bauguss, Jeffery Lynn

2012-01-01T23:59:59.000Z

84

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

85

Summary of Topic1 Fusion Power Extraction  

E-Print Network [OSTI]

Extraction and Tritium Fuel Cycle キ What choices are available for material, coolant, breeder, configuration availability of external tritium supply? #12;FW/Blanket concepts for fusion power extraction and tritium&D and facilities strongly overlap RAFM Steel PbLi Breeder Helium Cooled Ceramic Breeder Beryllium Helium Cooled Pb

Abdou, Mohamed

86

Cheaper oil extraction Taking a closer look  

E-Print Network [OSTI]

solvent for commercial-scale enhanced oil recovery to increase the amount of crude oil that canCONTENTS Cheaper oil extraction Taking a closer look at the eye Computational Science takes inside for more details #12;Greener, cheaper oil extraction Geographical and geological concerns

87

Modified Extraction Scheme for the CERN PS Multi-Turn Extraction  

E-Print Network [OSTI]

High-activation of the extraction magnetic septum of the CERN PS machine was observed due to the losses of the continuous beam extracted via the Multi-Turn Extraction (MTE) method. A possible mitigation measure consists of using an existing electrostatic septum, located upstream of the extraction magnetic septum, to deflect the beam. This would highly decrease the beam losses, and hence the induced activation, during the rise time of the MTE kickers due to the reduced thickness of the electrostatic septum with respect to the magnetic one. The layout of this new extraction will be described in detail and the results of beam measurements presented.

Gilardoni, S; Hernalsteens, C; Lachaize, A; M騁ral, G

2012-01-01T23:59:59.000Z

88

Remediating pesticide contaminated soils using solvent extraction  

SciTech Connect (OSTI)

Bench-scale solvent extraction studies were performed on soil samples obtained from a Superfund site contaminated with high levels of p,p{prime}-DDT, p,p{prime}-DDE and toxaphene. The effectiveness of the solvent extraction process was assessed using methanol and 2-propanol as solvents over a wide range of operating conditions. It was demonstrated that a six-stage methanol extraction using a solvent-to-soil ratio of 1.6 can decrease pesticide levels in the soil by more than 99% and reduce the volume of material requiring further treatment by 25 times or more. The high solubility of the pesticides in methanol resulted in rapid extraction rates, with the system reaching quasi-equilibrium state in 30 minutes. The extraction efficiency was influenced by the number of extraction stages, the solvent-to-soil ratio, and the soil moisture content. Various methods were investigated to regenerate and recycle the solvent. Evaporation and solvent stripping are low cost and reliable methods for removing high pesticide concentrations from the solvent. For low concentrations, GAC adsorption may be used. Precipitating and filtering pesticides by adding water to the methanol/pesticide solution was not successful when tested with soil extracts. 26 refs., 10 figs., 6 tabs.

Sahle-Demessie, E.; Meckes, M.C.; Richardson, T.L. [National Management Research Lab., Cincinnati, OH (United States)

1996-12-31T23:59:59.000Z

89

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

90

Fluidized bed gasification of extracted coal  

DOE Patents [OSTI]

Coal or similar carbonaceous solids are extracted by contacting the solids in an extraction zone with an aqueous solution having a pH above 12.0 at a temperature between 65/sup 0/C and 110/sup 0/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. 2 figs., 1 tab.

Aquino, D.C.; DaPrato, P.L.; Gouker, T.R.; Knoer, P.

1984-07-06T23:59:59.000Z

91

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

92

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

93

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 ツュ Research 180 Park

Abney, Steven P.

94

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

95

Aromatics Extraction Plant Design Using Synthesis Techniques  

E-Print Network [OSTI]

to extract an aromatics stream from a C 6 -C o heart cut of hydrogenated pyrolysis gasoline, leaving a raffinate containing paraffins and naphthenes. The Distillation Section distills the aromatics stream into high purity benzene, toluene, and Co... aromatics and a stream of C g and heavier Rromatics. Figure 1 shows the major flows and equipment relevant to this study. A lean solvent extracts the aromatics from the feed in the Extractor and the nonaromatic raffinate is sent to battery limits...

Wilcox, R. J.; Nedwick, R.

96

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

97

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...

98

Extracting and Using Data From Tracking Systems | Department...  

Energy Savers [EERE]

Extracting and Using Data From Tracking Systems Extracting and Using Data From Tracking Systems Better Buildings Neighborhood Program Data and Evaluation Peer Exchange Call:...

99

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...

100

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

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

PAPER 2004-028 The Effect of Bitumen Extraction  

E-Print Network [OSTI]

1 PAPER 2004-028 The Effect of Bitumen Extraction Shear Conditions on Froth Treatment Performance U processing: extraction and froth treatment. The most common extraction process is hot water bitumen extraction where bitumen is produced in a froth consisting of bitumen, water, and inorganic solids. The froth

Schramm, Laurier L.

102

Hierarchical Iso-Surface Extraction Computer Graphics Group  

E-Print Network [OSTI]

Hierarchical Iso-Surface Extraction Ulf Labsik Computer Graphics Group University of Erlangen Kai of our hierarchical iso-surface extraction algorithm. Abstract The extraction and display of iso construct a hierarchy of volumes and extract an iso-surface from the coarsest resolution with a standard

Desbrun, Mathieu

103

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

104

Membrane contactor assisted extraction/reaction process employing ionic liquids  

DOE Patents [OSTI]

The present invention relates to a functionalized membrane contactor extraction/reaction system and method for extracting target species from multi-phase solutions utilizing ionic liquids. One preferred embodiment of the invented method and system relates to an extraction/reaction system wherein the ionic liquid extraction solutions act as both extraction solutions and reaction mediums, and allow simultaneous separation/reactions not possible with prior art technology.

Lin, Yupo J. (Naperville, IL); Snyder, Seth W. (Lincolnwood, IL)

2012-02-07T23:59:59.000Z

105

Vapor Extraction Well Performance and Recommendations for Transitioning to Passive Extraction at the Former DUS-II Site  

SciTech Connect (OSTI)

This investigation evaluated mass extraction rate from individual wells associated with the Western Sector Treatment System (formerly known as the DUS-II project). This was critical since each individual well can have a radius of influence in excess of 100-ft when operating using an active extraction system. Future soil vapor extraction should use the existing active extraction system, supplemented with deployment of passive extraction where appropriate.

Jackson, Dennis G.; Noonkester, Jay V.; Looney, Brian B.

2013-04-03T23:59:59.000Z

106

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

107

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

108

Logical Structure Extraction from Software Requirements Documents  

E-Print Network [OSTI]

Documents I. INTRODUCTION Requirements management (RM) tools store and manipu- late software requirementsLogical Structure Extraction from Software Requirements Documents Rehan Rauf, Michal Antkiewicz,mantkiew,kczarnec}@gsd.uwaterloo.ca Abstract--Software requirements documents (SRDs) are often authored in general-purpose rich-text editors

Czarnecki, Krzysztof

109

Extracting gluon condensate from the average plaquette  

E-Print Network [OSTI]

The perturbative contribution in the average plaquette is subtracted using Borel summation and the remnant of the plaquette is shown to scale as a dim-4 condensate. A critical review is presented of the renormalon subtraction scheme that claimed a dim-2 condensate. The extracted gluon condensate is compared with the latest result employing high order (35-loop) calculation in the stochastic perturbation theory.

Lee, Taekoon

2015-01-01T23:59:59.000Z

110

Extracting Artifact Lifecycle Models from Metadata History  

E-Print Network [OSTI]

Extracting Artifact Lifecycle Models from Metadata History Olga Baysal, Oleksii Kononenko, Reid, Canada {obaysal, okononen, rtholmes, migod}@cs.uwaterloo.ca Abstract--Software developers and managers make decisions based on the understanding they have of their software systems. This understanding

Godfrey, Michael W.

111

Vapour extraction of heavy oil and bitumen  

SciTech Connect (OSTI)

This paper describes the process of vapor extraction for the recovery of petroleum and bitumen. The selection of solvent is critical, and it is shown that butane may be a good solvent for shallow reservoirs. Experiments are described in a Hele-Shaw cell and Packed Visual Model.

Das, K.A.; Butler, R.M. [Univ. of Calgary (Canada)

1994-12-31T23:59:59.000Z

112

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

113

Extraction and Analysis of Facebook Friendship Relations  

E-Print Network [OSTI]

Chapter 12 Extraction and Analysis of Facebook Friendship Relations Salvatore Catanese, Pasquale De and Social scientists. We present our long-term research effort in analyzing Facebook, the largest and arguably most successful OSN today: it gathers more than 500 million users. Access to data about Facebook

Ferrara, Emilio

114

Selective solvent extraction of cellulosic material  

DOE Patents [OSTI]

Cellulosic products having a high hemicellulose to lignin weight ratio are obtained by extracting a cellulosic composition with basic ethanol-water solution having a pH between about 12 and about 14 at a temperature between about 15 and about 70 C and for a time period between about 2 and about 80 hours. 6 figs.

Wang, D.I.C.; Avgerinos, G.C.

1983-07-26T23:59:59.000Z

115

Selective solvent extraction of cellulosic material  

DOE Patents [OSTI]

Cellulosic products having a high hemicellulose to lignin weight ratio are obtained by extracting a cellulosic composition with basic ethanol-water solution having a pH between about 12 and about 14 at a temperature between about 15.degree. and about 70.degree. C. and for a time period between about 2 and about 80 hours.

Wang, Daniel I. C. (Belmont, MA); Avgerinos, George C. (Newton Center, MA)

1983-01-01T23:59:59.000Z

116

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.

117

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

118

Dual Phase Li4 Ti5O12–TiO2 Nanowire Arrays As Integrated Anodes For  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phasesDataTranslocationDiurnalCommittee Draftfor $1.14Energy

119

Numerical failure analysis of a stretch-bending test on dual-phase steel sheets using a phenomenological fracture model  

E-Print Network [OSTI]

Advanced High Strength Steels (AHSS) are increasingly used in automotive industry due to their superior strength and substantial weight advantage. However, their compromised ductility gives rise to numerous manufacturing ...

Luo, Meng

120

Extracting metals directly from metal oxides  

DOE Patents [OSTI]

A method of extracting metals directly from metal oxides by exposing the oxide to a supercritical fluid solvent containing a chelating agent is described. Preferably, the metal is an actinide or a lanthanide. More preferably, the metal is uranium, thorium or plutonium. The chelating agent forms chelates that are soluble in the supercritical fluid, thereby allowing direct removal of the metal from the metal oxide. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is selected from the group consisting of {beta}-diketones, halogenated {beta}-diketones, phosphinic acids, halogenated phosphinic acids, carboxylic acids, halogenated carboxylic acids, and mixtures thereof. In especially preferred embodiments, at least one of the chelating agents is fluorinated. The method provides an environmentally benign process for removing metals from metal oxides without using acids or biologically harmful solvents. The chelate and supercritical fluid can be regenerated, and the metal recovered, to provide an economic, efficient process. 4 figs.

Wai, C.M.; Smart, N.G.; Phelps, C.

1997-02-25T23:59:59.000Z

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

Extracting metals directly from metal oxides  

DOE Patents [OSTI]

A method of extracting metals directly from metal oxides by exposing the oxide to a supercritical fluid solvent containing a chelating agent is described. Preferably, the metal is an actinide or a lanthanide. More preferably, the metal is uranium, thorium or plutonium. The chelating agent forms chelates that are soluble in the supercritical fluid, thereby allowing direct removal of the metal from the metal oxide. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is selected from the group consisting of .beta.-diketones, halogenated .beta.-diketones, phosphinic acids, halogenated phosphinic acids, carboxylic acids, halogenated carboxylic acids, and mixtures thereof. In especially preferred embodiments, at least one of the chelating agents is fluorinated. The method provides an environmentally benign process for removing metals from metal oxides without using acids or biologically harmful solvents. The chelate and supercritical fluid can be regenerated, and the metal recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Smart, Neil G. (Moscow, ID); Phelps, Cindy (Moscow, ID)

1997-01-01T23:59:59.000Z

122

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ー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ー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ー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ー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ー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

123

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

124

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

125

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

126

Optimization of a Solvent Extraction Desalination Plant  

E-Print Network [OSTI]

is usually determined by economical considerations with other factors sometimes exert. ing strong influ- ences Processes currently showing good potentials are various forms of distillation, freezing, electrodialysis, reverse osmosis, and solvent..., electrodialysis, reverse osmosis, and others. This thesis concerns the optimization of a Solvent Extraction Desalination Plant with respect to the "Standardized Procedure for Estimating Costs of Saline Water Conversions" (16). The two most im- portant...

Beighle, Phillip Lew

1969-01-01T23:59:59.000Z

127

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

128

Catalytic extraction processing of contaminated scrap metal  

SciTech Connect (OSTI)

Molten Metal Technology was awarded a contract to demonstrate the applicability of the Catalytic Extraction Process, a proprietary process that could be applied to US DOE`s inventory of low level mixed waste. This paper is a description of that technology, and included within this document are discussions of: (1) Program objectives, (2) Overall technology review, (3) Organic feed conversion to synthetic gas, (4) Metal, halogen, and transuranic recovery, (5) Demonstrations, (6) Design of the prototype facility, and (7) Results.

Griffin, T.P.; Johnston, J.E.; Payea, B.M.; Zeitoon, B.M.

1995-12-01T23:59:59.000Z

129

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,.Universitテ、t

130

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.

131

COLLOQUIUM: "The Environmental Footprint of Shale Gas Extraction...  

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

MBG Auditorium COLLOQUIUM: "The Environmental Footprint of Shale Gas Extraction and Hydraulic Fracturing" Professor Robert Jackson Duke University Presentation:...

132

A Tool for Personal Data Extraction Daniela Vianna  

E-Print Network [OSTI]

A Tool for Personal Data Extraction Daniela Vianna DCS, Rutgers University dvianna, we have developed a personal data extraction tool as a first step toward this vision. In this paper, we present this extraction tool, along with some preliminary statistics about personal data gath

Marian, Amテゥlie

133

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

1994-01-01T23:59:59.000Z

134

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ツュ supported summarization system. We to be reported in the summary. RIPTIDES next applies its Information Extraction subsystem to generate a database

Cardie, Claire

135

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

136

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

137

Rank Extraction in Tin-Oxide Sensor Arrays Page 1 of 23 Rank Extraction in Tin-Oxide Sensor Arrays  

E-Print Network [OSTI]

Rank Extraction in Tin-Oxide Sensor Arrays Page 1 of 23 Rank Extraction in Tin-Oxide Sensor Arrays the amount of data to be processed. This work is a first example in feature extraction from tin-oxide sensors element array of tin-oxide sensors is presented. Results are extrapolated to other arrays of chemical

Roppel, Thaddeus A.

138

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, Universitテゥ de

139

Apparatus for extracting and sequestering carbon dioxide  

DOE Patents [OSTI]

An apparatus and method associated therewith to extract and sequester carbon dioxide (CO.sub.2) from a stream or volume of gas wherein said 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)

2010-02-02T23:59:59.000Z

140

Enhanced Attenuation Technologies: Passive Soil Vapor Extraction  

SciTech Connect (OSTI)

Passive soil vapor extraction (PSVE) is an enhanced attenuation (EA) approach that removes volatile contaminants from soil. The extraction is driven by natural pressure gradients between the subsurface and atmosphere (Barometric Pumping), or by renewable sources of energy such as wind or solar power (Assisted PSVE). The technology is applicable for remediating sites with low levels of contamination and for transitioning sites from active source technologies such as active soil vapor extraction (ASVE) to natural attenuation. PSVE systems are simple to design and operate and are more cost effective than active systems in many scenarios. Thus, PSVE is often appropriate as an interim-remedial or polishing strategy. Over the past decade, PSVE has been demonstrated in the U.S. and in Europe. These demonstrations provide practical information to assist in selecting, designing and implementing the technology. These demonstrations indicate that the technology can be effective in achieving remedial objectives in a timely fashion. The keys to success include: (1) Application at sites where the residual source quantities, and associated fluxes to groundwater, are relatively low; (2) Selection of the appropriate passive energy source - barometric pumping in cases with a deep vadose zone and barrier (e.g., clay) layers that separate the subsurface from the atmosphere and renewable energy assisted PSVE in other settings and where higher flow rates are required. (3) Provision of sufficient access to the contaminated vadose zones through the spacing and number of extraction wells. This PSVE technology report provides a summary of the relevant technical background, real-world case study performance, key design and cost considerations, and a scenario-based cost evaluation. The key design and cost considerations are organized into a flowchart that dovetails with the Enhanced Attenuation: Chlorinated Organics Guidance of the Interstate Technology and Regulatory Council (ITRC). The PSVE flowchart provides a structured process to determine if the technology is, or is not, reasonable and defensible for a particular site. The central basis for that decision is the expected performance of PSVE under the site specific conditions. Will PSVE have sufficient mass removal rates to reduce the release, or flux, of contamination into the underlying groundwater so that the site can meet it overall remedial objectives? The summary technical information, case study experiences, and structured decision process provided in this 'user guide' should assist environmental decision-makers, regulators, and engineers in selecting and successfully implementing PSVE at appropriate sites.

Vangelas, K.; Looney, B.; Kamath, R.; Adamson, D.; Newell, C.

2010-03-15T23:59:59.000Z

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

Hot cell shield plug extraction apparatus  

DOE Patents [OSTI]

An apparatus is provided for moving shielding plugs into and out of holes in concrete shielding walls in hot cells for handling radioactive materials without the use of external moving equipment. The apparatus provides a means whereby a shield plug is extracted from its hole and then swung approximately 90 degrees out of the way so that the hole may be accessed. The apparatus uses hinges to slide the plug in and out and to rotate it out of the way, the hinge apparatus also supporting the weight of the plug in all positions, with the load of the plug being transferred to a vertical wall by means of a bolting arrangement.

Knapp, Philip A. (Moore, ID); Manhart, Larry K. (Pingree, ID)

1995-01-01T23:59:59.000Z

142

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

143

Accelerated solvent extraction of petroleum contaminated sediments  

E-Print Network [OSTI]

were repeated on these extracts and results were virtually the same (within 500mg/kg). It is unknown why these samples have such a discrepancy from the rest of the data. The ASE data was compared to soxhlet oil and grease values and it was found... recoveries were compared individually at each sampling event and as total target analytes. These comparisons are shown in Table 8. Target compounds below the MDL and within analytical instrument background levels were discarded. This was done as a result...

Bauguss, Jeffery Lynn

1997-01-01T23:59:59.000Z

144

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

145

Feature extraction for structural dynamics model validation  

SciTech Connect (OSTI)

This study focuses on defining and comparing response features that can be used for structural dynamics model validation studies. Features extracted from dynamic responses obtained analytically or experimentally, such as basic signal statistics, frequency spectra, and estimated time-series models, can be used to compare characteristics of structural system dynamics. By comparing those response features extracted from experimental data and numerical outputs, validation and uncertainty quantification of numerical model containing uncertain parameters can be realized. In this study, the applicability of some response features to model validation is first discussed using measured data from a simple test-bed structure and the associated numerical simulations of these experiments. issues that must be considered were sensitivity, dimensionality, type of response, and presence or absence of measurement noise in the response. Furthermore, we illustrate a comparison method of multivariate feature vectors for statistical model validation. Results show that the outlier detection technique using the Mahalanobis distance metric can be used as an effective and quantifiable technique for selecting appropriate model parameters. However, in this process, one must not only consider the sensitivity of the features being used, but also correlation of the parameters being compared.

Hemez, Francois [Los Alamos National Laboratory; Farrar, Charles [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory; Nishio, Mayuko [UNIV OF TOKYO; Worden, Keith [UNIV OF SHEFFIELD; Takeda, Nobuo [UNIV OF TOKYO

2010-11-08T23:59:59.000Z

146

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

147

White LED with High Package Extraction Efficiency  

SciTech Connect (OSTI)

The goal of this project is to develop a high efficiency phosphor converting (white) Light Emitting Diode (pcLED) 1-Watt package through an increase in package extraction efficiency. A transparent/translucent monolithic phosphor is proposed to replace the powdered phosphor to reduce the scattering caused by phosphor particles. Additionally, a multi-layer thin film selectively reflecting filter is proposed between blue LED die and phosphor layer to recover inward yellow emission. At the end of the project we expect to recycle approximately 50% of the unrecovered backward light in current package construction, and develop a pcLED device with 80 lm/W{sub e} using our technology improvements and commercially available chip/package source. The success of the project will benefit luminous efficacy of white LEDs by increasing package extraction efficiency. In most phosphor-converting white LEDs, the white color is obtained by combining a blue LED die (or chip) with a powdered phosphor layer. The phosphor partially absorbs the blue light from the LED die and converts it into a broad green-yellow emission. The mixture of the transmitted blue light and green-yellow light emerging gives white light. There are two major drawbacks for current pcLEDs in terms of package extraction efficiency. The first is light scattering caused by phosphor particles. When the blue photons from the chip strike the phosphor particles, some blue light will be scattered by phosphor particles. Converted yellow emission photons are also scattered. A portion of scattered light is in the backward direction toward the die. The amount of this backward light varies and depends in part on the particle size of phosphors. The other drawback is that yellow emission from phosphor powders is isotropic. Although some backward light can be recovered by the reflector in current LED packages, there is still a portion of backward light that will be absorbed inside the package and further converted to heat. Heat generated in the package may cause a deterioration of encapsulant materials, affecting the performance of both the LED die and phosphor, leading to a decrease in the luminous efficacy over lifetime. Recent studies from research groups at Rensselaer Polytechnic Institute found that, under the condition to obtain a white light, about 40% of the light is transmitted outward of the phosphor layer and 60% of the light is reflected inward.1,2 It is claimed that using scattered photon extraction (SPE) technique, luminous efficacy is increased by 60%. In this project, a transparent/translucent monolithic phosphor was used to replace the powdered phosphor layer. In the normal pcLED package, the powdered phosphor is mixed with silicone either to be deposited on the top of LED die forming a chip level conversion (CLC) white LED or to be casted in the package forming a volume conversion white LED. In the monolithic phosphors there are no phosphor powder/silicone interfaces so it can reduce the light scattering caused by phosphor particles. Additionally, a multi-layer thin film selectively reflecting filter is inserted in the white LED package between the blue LED die and phosphor layer. It will selectively transmit the blue light from the LED die and reflect the phosphor's yellow inward emission outward. The two technologies try to recover backward light to the outward direction in the pcLED package thereby improving the package extraction efficiency.

Yi Zheng; Matthew Stough

2008-09-30T23:59:59.000Z

148

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

149

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ー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% ア 6.0 extraction of americium and 69% ア 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% ア 3.0 extraction of americium and 83% ア 5.0 extraction of plutonium in a single 45 minute SFE at 3,750 psi and 95ー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

150

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

151

Extracting Geospatial Preferences Using Relational Neighbors  

E-Print Network [OSTI]

With the increasing popularity of location-based social media applications and devices that automatically tag generated content with locations, large repositories of collaborative geo-referenced data are appearing on-line. Efficiently extracting user preferences from these data to determine what information to recommend is challenging because of the sheer volume of data as well as the frequency of updates. Traditional recommender systems focus on the interplay between users and items, but ignore contextual parameters such as location. In this paper we take a geospatial approach to determine locational preferences and similarities between users. We propose to capture the geographic context of user preferences for items using a relational graph, through which we are able to derive many new and state-of-the-art recommendation algorithms, including combinations of them, requiring changes only in the definition of the edge weights. Furthermore, we discuss several solutions for cold-start scenarios. Finally, we con...

Marinho, Leandro Balby; Sandholm, Thomas; Nunes, Iury; Nbrega, Caio; Arajo, Jord縊

2012-01-01T23:59:59.000Z

152

Soft Multiple Winners for Sparse Feature Extraction  

E-Print Network [OSTI]

A simple and computationally inexpensive neural network method for generating sparse representations is presented. The network has a single layer of linear neurons and, on top of it, a mechanism, which assigns a winning strength for each neuron. Both input and output are real valued in contrast to many earlier methods, where either input or output must have been binary valued. Also, the sum of winning strengths does not have to be normalized as in some other approaches. The ability of the algorithm to find meaningful features is demonstrated in a simulation with images of handwritten numerals. 1. Introduction The objective of a feature extraction system is to refine data in such a way that further processing becomes easier. In classification, such a system has two basic goals. One is to remove redundancies from the data. This helps cutting down computational costs later on. Another, contradictory goal is to discriminate data, which helps in distinguishing between similar inputs. A fe...

153

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... for extracting organic mutagens from the waste or soil/waste mixture. The use of combined biological and chemical testing protocol provided the most practical means of determining extraction efficiency. The bioassay detected additive, synergistic...

Maggard, Lea Ann

1986-01-01T23:59:59.000Z

154

Extracting Operating Modes from Building Electrical Load Data: Preprint  

SciTech Connect (OSTI)

Empirical techniques for characterizing electrical energy use now play a key role in reducing electricity consumption, particularly miscellaneous electrical loads, in buildings. Identifying device operating modes (mode extraction) creates a better understanding of both device and system behaviors. Using clustering to extract operating modes from electrical load data can provide valuable insights into device behavior and identify opportunities for energy savings. We present a fast and effective heuristic clustering method to identify and extract operating modes in electrical load data.

Frank, S.; Polese, L. G.; Rader, E.; Sheppy, M.; Smith, J.

2012-01-01T23:59:59.000Z

155

automated concise extraction: Topics by E-print Network  

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

of Computer Science, Bar-Ilan University, Ramat-Gan 52900, Israel 4 Center for Automation Research, University of Maryland Plaza, Antonio J. 5 Automated Pointcut Extraction...

156

automated rna extraction: Topics by E-print Network  

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

of Computer Science, Bar-Ilan University, Ramat-Gan 52900, Israel 4 Center for Automation Research, University of Maryland Plaza, Antonio J. 5 Automated Pointcut Extraction...

157

Penguin pollution estimates relevant for phi_2/alpha extraction  

E-Print Network [OSTI]

A review of methods to extract the standard CKM unitarity triangle angle alpha is provided. The sizes of related theoretical errors are reviewed.

Jure Zupan

2007-08-16T23:59:59.000Z

158

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...

159

automatically extracting molecular: Topics by E-print Network  

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

University of Malta 2 Department of Computer Science, University of Malta claudia.borg|mike.rosner|gordon.pace@um.edu.mt Abstract. Definition extraction can be useful Pace,...

160

automatic contour extraction: Topics by E-print Network  

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

University of Malta 2 Department of Computer Science, University of Malta claudia.borg|mike.rosner|gordon.pace@um.edu.mt Abstract. Definition extraction can be useful Pace,...

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

automatically extracting ts: Topics by E-print Network  

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

University of Malta 2 Department of Computer Science, University of Malta claudia.borg|mike.rosner|gordon.pace@um.edu.mt Abstract. Definition extraction can be useful Pace,...

162

Extraction of Additives from Polystyrene and Subsequent Analysis  

E-Print Network [OSTI]

The extraction of fifteen (15) polymer additives with supercritical carbon dioxide which are used as antioxidants, uv stabilizers, process lubes, flame retardants and antistats from eight formulations of polystyrene is demonstrated and compared to traditional dissolution/precipitation extractions. The purpose of the study was twofold: 1) the development of a high performance liquid chromatography (HPLC) method(s) for the additives and 2) the determination of the viability of supercritical fluid extraction (SFE) for the additives from polystyrene. Separation of some of the additives was achieved using reversed phase liquid chromatography. Nine of the additives were assayed in this manner while, the remaining six additives could not be assayed using reversed phase liquid chromatography. In order to develop an extraction method for the additives, the effects of static extraction time, CO2 density, and temperature were first investigated. These preliminary extractions revealed that a static extraction period which afforded an opportunity for the polymer to swell combined with a high CO2 density and extraction temperature above the glass transition (Tg) yielded quantitative recoveries of the additives. Triplicate extractions of the

Susan H. Smith; Larry T. Taylor; Gary L. Long; James F. Wolfe; Susan H. Smith

163

andongensis extract aloe: Topics by E-print Network  

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

Documents Articles, Books DocbookIndexer PDFBox PDF Metadata from content & context Fill in generated... Droogmans, Lieven; Bosman, Ben 2005-07-07 70 Point Source Extraction...

164

aloe andongensis extract: Topics by E-print Network  

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

Documents Articles, Books DocbookIndexer PDFBox PDF Metadata from content & context Fill in generated... Droogmans, Lieven; Bosman, Ben 2005-07-07 70 Point Source Extraction...

165

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology...  

Energy Savers [EERE]

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...

166

Application of ultrasound in solvent extraction of nickel and gallium  

SciTech Connect (OSTI)

The effects of ultrasound on the rate of solvent extraction of nickel with Lix 65N and Lix 70, and gallium with Kelex 100 were investigated. These solvent extraction systems are noted by their sluggish nature. Low frequency (20 kHz) ultrasound increased the rates of extraction of nickel by factors of four to seven. The ultrasound had no effect on the final chemical equilibrium. Gallium extraction rates were enhanced with the use of ultrasound by as much as a factor of 15. Again, the ultrasound had no effect on extraction equilibrium. For both nickel and gallium, the enhanced rates were attributed to increased interfacial surface area associated with ultrasonically induced cavitation and microdroplet formation. The stability of the microdroplets permitted intermittent application of ultrasound with corresponding decreases in ultrasonic energy requirements. The lowest energy consumption was observed with short (0.25 to 5 s) bursts of high power (41 to 61 W) ultrasonic inputs. The study also provided insight into the factors that affect the complex extraction of gallium from sodium aluminate solutions. The rate controlling step was found to be the dehydration of the gallate ion, Ga(OH)4, and the first complex formation between gallium and Kelex 100. Sodium was found to enhance the extraction rate up to a point, beyond which increased concentration was detrimental. Increasing aluminum concentration was found to slow extraction rates. Modifiers and diluents were shown to markedly affect extraction rates even without ultrasound. Ketone modifiers, particularly 2-undecanone, when used with Kermac 470B or Escaid 200 diluents enhanced extraction rates of gallium to the point that the use of ultrasound provided no additional benefits. The positive effects of ketone modifiers for the solvent extraction of gallium had not been previously reported.

Pesic, B.

1996-07-01T23:59:59.000Z

167

On automating the extraction of programs from termination proofs  

E-Print Network [OSTI]

On automating the extraction of programs from termination proofs Fairouz Kamareddine , Fran to use termination techniques such as those in rewriting theory. We overcome this difficulty the incorporation of termination techniques used in other areas while still extracting programs. Keywords: Program

Ayala-Rincn, Mauricio

168

Heng Ji & Ralph Grishman Collaborative Entity Extraction and Translation 1  

E-Print Network [OSTI]

CONTENTS Heng Ji & Ralph Grishman Collaborative Entity Extraction and Translation 1 Index of Subjects and Terms 13 #12;vi CONTENTS #12;Collaborative Entity Extraction and Translation Heng Ji & Ralph s in language S from the #12;2 HENG JI & RALPH GRISHMAN properties of the sequence of tokens t with which

169

Information Extraction in the KELP Framework Robert Dale, Marc Tilbrook  

E-Print Network [OSTI]

Information Extraction in the KELP Framework Robert Dale, Marc Tilbrook Centre for Language In this paper, we describe some early steps in a new approach to information extraction. The aim of the kelp, to reconcile and combine the informational elements found in a text. 2 Background The goal of the kelp1 project

Dale, Robert

170

Heuristically Driven Front Propagation for Fast Geodesic Extraction  

E-Print Network [OSTI]

Heuristically Driven Front Propagation for Fast Geodesic Extraction Gabriel Peyrツエ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, Universitテゥ de

171

Extracting Business Rules from COBOL: A Model-Based Tool  

E-Print Network [OSTI]

Extracting Business Rules from COBOL: A Model-Based Tool Valerio Cosentino AtlanMod, INRIA, EMN and we provide a set of model transformations to identify and visualize the embedded business rules at this point. This model will be then manipulated in the next steps to extract the business rules

Paris-Sud XI, Universitテゥ de

172

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, Cambridge CB3 0EL, United Kingdom ivasconc@gmail.com Abstract: Existing methods for Green's function extraction give the Green's function from the correlation of field fluctuations recorded at those points

Snieder, Roel

173

BEaST: Brain extraction using multiresolution nonlocal segmentation  

E-Print Network [OSTI]

BEaST: Brain extraction using multiresolution nonlocal segmentation Simon F. Eskildsen1 テ?stergaard2 , D. Louis Collins1 , and the Alzheimer's Disease Neuroimaging Initiative 1 McConnell Brain. Brain extraction is an important step in the analysis of brain images. Variability in brain morphology

Paris-Sud XI, Universitテゥ de

174

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

175

Extraction of Neutrino Flux from the Inclusive Muon Cross Section  

E-Print Network [OSTI]

We have studied a method to extract neutrino flux from the data of neutrino-nucleus reaction by using maximum entropy method. We demonstrate a promising example to extract neutrino flux from the inclusive cross section of muon production without selecting a particular reaction process such as quasi-elastic nucleon knockout.

Murata, Tomoya

2015-01-01T23:59:59.000Z

176

Extraction of Neutrino Flux from the Inclusive Muon Cross Section  

E-Print Network [OSTI]

We have studied a method to extract neutrino flux from the data of neutrino-nucleus reaction by using maximum entropy method. We demonstrate a promising example to extract neutrino flux from the inclusive cross section of muon production without selecting a particular reaction process such as quasi-elastic nucleon knockout.

Tomoya Murata; Toru Sato

2015-01-23T23:59:59.000Z

177

Method of underground mining by pillar extraction  

DOE Patents [OSTI]

A method of sublevel caving and pillar and top coal extraction for mining thick coal seams includes the advance mining of rooms and crosscuts along the bottom of a seam to a height of about eight feet, and the retreat mining of the top coal from the rooms, crosscuts and portions of the pillars remaining from formation of the rooms and cross-cuts. In the retreat mining, a pocket is formed in a pillar, the top coal above the pocket is drilled, charged and shot, and then the fallen coal is loaded by a continuous miner so that the operator remains under a roof which has not been shot. The top coal from that portion of the room adjacent the pocket is then mined, and another pocket is formed in the pillar. The top coal above the second pocket is mined followed by the mining of the top coal of that portion of the room adjacent the second pocket, all by use of a continuous miner which allows the operator to remain under a roof portion which has not been shot.

Bowen, Ray J. (1879 Delann, Salt Lake City, UT 84121); Bowen, William R. (1636 Sunnydale La., Salt Lake City, UT 84108)

1980-08-12T23:59:59.000Z

178

Solvent extraction of bitumen from tar sands  

SciTech Connect (OSTI)

This paper reports on the measurement of mass transfer rates for the extraction of bitumen from tar sands using organic solvents. The experiment was carried out in an agitated vessel using a six-blade turbine mixer on a laboratory scale. To facilitate the determination of absolute mass transfer coefficients, tar sands were specially prepared in the form of spherical particles so that mass transfer area can be computed. The variables investigated in the study included: (1) solvent type (kerosene, toluene, benzene), (2) stirrer speed, 25 rpm to 1000 rpm, and (3) particle diameter, 0.4 cm to 1.2 cm. The results indicated that solvency power varied markedly with the various solvents used and that high aromatic content promoted rapid dissolution when compared with paraffinic solvents. The mass transfer rates increased with increasing stirrer speed in accordance with the relationship: k {alpha} N{sup 0.56} where k is the mass transfer coefficient and N the stirrer speed. Increasing particle diameter also resulted in decreased mass transfer rates. The results were satisfactorily correlated in terms of a Frossling type equation, Sh {alpha} Re{sub p}{sup a}Sc{sup b}.

Hoon, A.Y.; Thomas, S. [Univ. of West Indies, St. Augustine (Trinidad and Tobago)

1995-12-31T23:59:59.000Z

179

DNAPL Extraction/Oleofilter Test Report  

SciTech Connect (OSTI)

A short term, low flow DNAPL extraction test was performed from May 29 - 30, 1997, to gather additional information about the possibility of using monitoring well MSB-3D to recover source contamination from the M-Area Aquifer. Although no visible, free phase material was recovered, the groundwater did contain perchloroethylene (PCE) at and above aqueous solubility. Improvements in the pumping configuration were identified for future trials. Prior to final treatment in the M1 air stripper, the groundwater was passed through an Oleofiltration system to evaluate its capability as a treatment technology. The Oleofilter uses a combination of conventional gravity assisted separation with coalescing plates and a final polishing filter using proprietary coated granules to remove hydrocarbons. Although free phase DNAPL was not processed through the Oleofilter, the groundwater containing high levels of dissolved PCE was treated efficiently. Initially the Oleofilter removed 99 percent of the PCE. As the test progressed, this removal rate decreased to 83 percent as the granules became loaded with PCE. Longer term testing, perhaps with periodic backflushing, is required to determine the effective granule capacity.

White, R.M. [Westinghouse Savannah River Company, AIKEN, SC (United States); Hazel, C.

1997-11-03T23:59:59.000Z

180

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 鉄hockley-Queisser limit, in conventional solar cells. In these cells, absorption of photons with energies above the semiconductor bandgap generates 塗ot charge carriers that quickly 田ool 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 菟honon 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.


181

Optimal information extractable in a measurement  

E-Print Network [OSTI]

In any measurement of a parameter, effect of finite resource is manifested in a finite number ($M$) of probable values for the estimate. Here it is shown that this count of the discrete number of measurement outcomes leads to a pair of equivalent bounds:$\\delta \\geq 1/M$ on precision($\\delta$) and $I \\leq \\log(M)$ on \\textit{mutual information} ($I$) between the parameter and its estimate. Furthermore, the probe particle symmetry is found to play a significant role in limiting $M$ and thereby, in limiting extractable information in a measurement. In particular, for $N$ indistinguishable spin-half probe particles, it is shown that $M$ is tightly bounded to $O(N^2)$. The corresponding operator that saturates this bound represents a non interferometric measurement. While inherently Heisenberg limited, this measurement is precise up to $\\delta \\sim 1/N^2$. These results can be used to benchmark any precision measurement thereby establishing a particular link between information theory and metrology.

H. M. Bharath; Saikat Ghosh

2014-11-27T23:59:59.000Z

182

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

183

Solvent extraction of Southern US tar sands  

SciTech Connect (OSTI)

The Department of Chemical Engineering at the University of Arkansas, in association with Diversified Petroleum Recovery, Inc. (DPR) of Little Rock, Arkansas, has been developing a solvent extraction process for the recovery of bitumen from tar sands for the past five years. The unique feature of the process is that the bitumen is recovered from the solvent by contacting with a co-solvent, which causes the bitumen to precipitate. The overall purpose of this project is to study both the technical and economic feasibility of applying this technology for recovery of bitumen from tar sands by (1) investigating the socioeconmic factors which affect (a) plant siting and (b) the market value of recovered bitumen; (2) operating a process demonstration unit at the rate of 1 lb/hr recovered bitumen while producing clean sand and recyclable solvents; and (3) determine the economic conditions which will make a bitumen recovery project economical. DPR has analyzed the historical trends of domestic production, consumption, discoveries and reserves of crude oil. They have started an investigation of the volatility in the price of crude oil and of gasoline prices and of the differential between gasoline and crude oil. DPR continues to analyze the geographical movement and demand for asphalt products. Utah does not appear economically attractive as a site for a bitumen from tar sands asphalt plant. Oklahoma sites are now being studied. This report also contains the quarterly progress report from a University of Nevada study to determine bitumen composition, oxygen uptake rates, and viscosities of Alabama and Utah bitumens. Both reports have been indexed separately for inclusion on the data base.

Penney, W.R.

1990-01-01T23:59:59.000Z

184

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

185

Approaches for regeneration of amine-carboxylic acid extracts  

SciTech Connect (OSTI)

Extraction processes based on reversible chemical complexation can be useful for separation of polar organics from dilute solution. Tertiary amines are effective extractants for the recovery of carboxylic acids from aqueous solution. The regeneration of aminecarboxylic acid extracts is an important step which strongly influences the economic viability of the separation process. Several regeneration methods are critically reviewed, and the factors that affect swing regeneration processes, including temperature-swing, diluent composition-swing and pH-swing with a volatile base are discussed. Interest in this area comes from interest in treatment of waste streams, particularly in petrochemical and fermentation manufacture.

Dai, Y.; King, C.J.

1995-07-01T23:59:59.000Z

186

Selective Extraction of Uranium from Liquid or Supercritical Carbon Dioxide  

SciTech Connect (OSTI)

Current liquid-liquid extraction processes used in recycling irradiated nuclear fuel rely on (1) strong nitric acid to dissolve uranium oxide fuel, and (2) the use of aliphatic hydrocarbons as a diluent in formulating the solvent used to extract uranium. The nitric acid dissolution process is not selective. It dissolves virtually the entire fuel meat which complicates the uranium extraction process. In addition, a solvent washing process is used to remove TBP degradation products, which adds complexity to the recycling plant and increases the overall plant footprint and cost. A liquid or supercritical carbon dioxide (l/sc -CO2) system was designed to mitigate these problems. Indeed, TBP nitric acid complexes are highly soluble in l/sc -CO2 and are capable of extracting uranium directly from UO2, UO3 and U3O8 powders. This eliminates the need for total acid dissolution of the irradiated fuel. Furthermore, since CO2 is easily recycled by evaporation at room temperature and pressure, it eliminates the complex solvent washing process. In this report, we demonstrate: (1) A reprocessing scheme starting with the selective extraction of uranium from solid uranium oxides into a TBP-HNO3 loaded Sc-CO2 phase, (2) Back extraction of uranium into an aqueous phase, and (3) Conversion of recovered purified uranium into uranium oxide. The purified uranium product from step 3 can be disposed of as low level waste, or mixed with enriched uranium for use in a reactor for another fuel cycle. After an introduction on the concept and properties of supercritical fluids, we first report the characterization of the different oxides used for this project. Our extraction system and our online monitoring capability using UV-Vis absorbance spectroscopy directly in sc-CO2 is then presented. Next, the uranium extraction efficiencies and kinetics is demonstrated for different oxides and under different physical and chemical conditions: l/sc -CO2 pressure and temperature, TBP/HNO3 complex used, reductant or complexant used for selectivity, and ionic liquids used as supportive media. To complete the extraction and recovery cycle, we then demonstrate uranium back extraction from the TBP loaded sc-CO2 phase into an aqueous phase and the characterization of the uranium complex formed at the end of this process. Another aspect of this project was to limit proliferation risks by either co-extracting uranium and plutonium, or by leaving plutonium behind by selectively extracting uranium. We report that the former is easily achieved, since plutonium is in the tetravalent or hexavalent oxidation state in the oxidizing environment created by the TBP-nitric acid complex, and is therefore co-extracted. The latter is more challenging, as a reductant or complexant to plutonium has to be used to selectively extract uranium. After undertaking experiments on different reducing or complexing systems (e.g., AcetoHydroxamic Acid (AHA), Fe(II), ascorbic acid), oxalic acid was chosen as it can complex tetravalent actinides (Pu, Np, Th) in the aqueous phase while allowing the extraction of hexavalent uranium in the sc-CO2 phase. Finally, we show results using an alternative media to commonly used aqueous phases: ionic liquids. We show the dissolution of uranium in ionic liquids and its extraction using sc-CO2 with and without the presence of AHA. The possible separation of trivalent actinides from uranium is also demonstrated in ionic liquids using neodymium as a surrogate and diglycolamides as the extractant.

Farawila, Anne F.; O'Hara, Matthew J.; Wai, Chien M.; Taylor, Harry Z.; Liao, Yu-Jung

2012-07-31T23:59:59.000Z

187

MATERIALS AND MOLECULAR RESEARCH DIVISION. ANNUAL REPORT 1980  

E-Print Network [OSTI]

Compositional Analysis of Dual Phase Steels by TransmissionMechanical Behavior of Dual Phase Steels Conュ taining Strongand Properties of Dual Phase Steels, The Metallurgical

Searcy, Alan W.

2010-01-01T23:59:59.000Z

188

Mercury extraction by the TRUEX process solvent: I. Kinetics, extractable species, dependence on nitric acid concentration and stoichiometry  

SciTech Connect (OSTI)

Mercury extraction from acidic aqueous solutions by the TRUEX process solvent (0.2 M CMPO, 1.4 M TBP in n-dodecane) has not extensively been examined. Research at the Idaho Chemical Processing Plant is currently in progress to evaluate the TRUEX process for actinide removal from several acidic waste streams, including liquid sodium-bearing waste (SBW), which contains significant quantities of mercury. Preliminary experiments were performed involving the extraction of Hg{sup 203}, added as HgCl{sub 2}, from 0.01 to 10 M HNO{sub 3} solutions. Mercury distribution coefficients (D{sub Hg}) range between 3 and 60 from 0.01 M to 2 M HNO{sub 3}. At higher nitric acid concentrations, i.e. 5 M HNO{sub 3} or greater, D{sub Hg} significantly decreases to values less than 1. These results indicate mercury is extracted from acidic solutions {<=}{approximately}2 M HNO{sub 3} and stripped with nitric acid solutions {>=}{approximately}5 M HNO{sub 3}. Experimental results indicate the extractable species is HgCl{sub 2} from nitrate media, i.e., chloride must be present in the nitrate feed to extract mercury. Extractions from Hg(NO{sub 3}){sub 2} solutions indicated substantially reduced distribution ratios, typically D{sub Hg}< 1, for the range of nitric acid concentrations examined (0.01 to 8 M HNO{sub 3}). Extraction of mercury, as HgCl{sub 2}, by the individual components of the TRUEX solvent was also examined from 2 M HNO{sub 3}. The diluent, n-dodecane, does not measurably extract mercury. With a 1.4 M TBP/n-dodecane solvent, D{sub Hg} {approximately}3.4 compared with D{sub Hg} {approximately}7 for the TRUEX solvent. Classical slope analysis techniques were utilized to evaluate the stoichiometric coefficients of Hg extraction independently for both CMPO and TBP.

Herbst, R.S.; Brewer, K.N.; Tranter, T.J.; Todd, T.A.

1995-12-01T23:59:59.000Z

189

E-Print Network 3.0 - amine-carboxylic acid extracts Sample Search...  

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

- YPD (yeast extract peptone dextrose): 1% yeast extract 10 g 2% peptone 20... g 2% agar 20 g 2% dextrose (glucose) 20 g H2O to 1 l - YPG (yeast extract peptone glycerol): 1......

190

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

191

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

192

Using Clustering to extract Personality Information from socio economic data.  

E-Print Network [OSTI]

Using Clustering to extract Personality Information from socio economic data. Alexandros Ladas, Uwe. Keywords-component; Data Mining; Clustering; Behavior Mining; Personality Psychology; I. INTRODUCTION psychological information regarding the Personalities of the individuals in order to enhance Data Mining methods

Aickelin, Uwe

193

Development of novel contactor for nuclear solvent extraction  

SciTech Connect (OSTI)

For current designs of radiochemical plants, solvent-extraction contactors with no periodic maintenance like pulse column are the first choice. In addition, as costs of specialty solvents for nuclear extraction are quite high, there is a demand for operation at extreme phase ratios. Recently a novel mixer-settler was visualized and developed for this kind of service. The mixer of the novel contactor is based on rotated helical tubes and does not involve any mechanical moving part. Mass-transfer runs were carried out with aqueous nitric acid and 30% TBP solvent at A/O of 0.25-200 (in extraction) and A/O of 0.25-10 (in back-extraction mode). The developed contactor exhibited nearly 100% efficiency for all the cases. (authors)

Kumar, Shekhar; Kumar, Rajnish; Sivakumar, D.; Balamurugan, M.; Koganti, S.B. [Reprocessing R and D Division, Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102 (India)

2008-07-01T23:59:59.000Z

194

Extractive Industries and Sustainable Development EXECUTIVE TRAINING PROGRAM  

E-Print Network [OSTI]

Industries and Sustainable Development EXECUTIVE TRAINING PROGRAM Vale Columbia Center UNIVERSITY Center on Globalization and Sustainable Development EARTH INSTITUTE | COLUMBIA UNIVERSITY #12; Extractive Industries and Sustainable Development Executive Training

195

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

196

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

197

Extracting clinically-actionable information from wearable physiological monitors  

E-Print Network [OSTI]

In this thesis I examine several ways of extracting information from wearable monitors so as to help make clinical decisions. Wearable physiological sensors are developing rapidly, and pose a possible part of the solution ...

Haslam, Bryan (Bryan Todd)

2011-01-01T23:59:59.000Z

198

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

199

Electromagnetic Extraction and Annihilation of Antiprotons for Spacecraft Propulsion  

E-Print Network [OSTI]

. Zayas, Raymond J. Sedwick May, 2008 SSL # 3-08 #12;#12;Electromagnetic Extraction and Annihilation of Antiprotons for Spacecraft Propulsion Daniel A. Zayas, Raymond J. Sedwick May, 2008 SSL # 3-08 This work

200

Determination of uncertainty in parameters extracted from single spectroscopic measurements  

E-Print Network [OSTI]

The ability to quantify uncertainty in information extracted from spectroscopic measurements is important in numerous fields. The traditional approach of repetitive measurements may be impractical or impossible in some ...

Bechtel, Kate L.

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

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

202

Improved mass transport efficiency in copper solvent extraction  

E-Print Network [OSTI]

This thesis considers methods which can be employed to increase the mass of copper transferred into and out of the organic phase during the load and strip stages of commercial solvent extraction processes. Conventional ...

Gordon, Ross John

2009-06-29T23:59:59.000Z

203

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

204

Far field RF power extraction circuits and systems  

E-Print Network [OSTI]

In this thesis, I describe efficient methods for extracting DC power from electromagnetic radiation. This will become an important necessity for a number of applications involving remotely powered devices, such as Radio ...

Mandal, Soumyajit, 1979-

2004-01-01T23:59:59.000Z

205

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

206

Evaluation and prevention of explosions in soil vapor extraction systems  

SciTech Connect (OSTI)

Due to the widespread and long term use of petroleum derived fuels and solvents, many areas have subsurface soils contaminated with petroleum derivatives. This contamination can migrate to groundwater, which is frequently used to supply drinking water needs. A common method of cleaning up that contamination is soil vapor extraction (SVE). SVE is a technique where several extraction wells are installed in the contaminated area, with screens in the appropriate vertical locations. The soil vapors re extracted form the wells using a positive displacement blower. To prevent this subsurface contamination from becoming air pollution, the extracted vapors are then sent to some hydrocarbon removal device, such as a carbon adsorption system or a thermal oxidizer. The data used in this investigation were collected as part of a Radian Corporation project for a client. The site is a former petroleum refinery, and the hydrocarbons are primarily gasoline and diesel.

Hower, J.W. [Radian Corp., El Segundo, CA (United States)

1995-12-31T23:59:59.000Z

207

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

208

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.

209

A unified theory on electro-kinetic extraction of contaminants  

E-Print Network [OSTI]

of contaminants from fine-grained soils. Here, the experimental and the theoretical studies conducted to date are reviewed briefly 2. 3. 1. Experimental Studies The technique of electro-kinetic extraction of salts from alkaline soils was investigated by Puri...A VNIFIED THEORY ON ELECTRO-KINETIC EXTRACTION OF CONTAMINANTS A Thesis by SUBBARAJU DATLA 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...

Datla, Subbaraju

1994-01-01T23:59:59.000Z

210

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[prime](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[prime](5[prime]) [1-hydroxyheptyl]cyclohexo 18-crown-6 compound, and a cation exchanger in a matrix solution. 3 figs.

Davis, M.W. Jr.; Bowers, C.B. Jr.

1988-06-07T23:59:59.000Z

211

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

212

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

213

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

214

A study of a solvent extraction desalination process  

E-Print Network [OSTI]

, low extraction column efficiencies were obtained with the amine phase dispersed and much higher effi. cienci. es were obtained with the water phase dispersed in the Scheibel Column. In an attempt to partially explain the result. s, an effort... Flow Diagram of Hydrocyclone System. Effect of Amine Solubility in Water on Ratio of Na 53 and Cl Selectivities. 54 Selectivity of NaC1 in Amines. Selectivity of. NaC1 in Diisopropylamine. Selectivity of KCI in Diisopropylamine Extraction...

McFerrin, Arthur Ransom

1969-01-01T23:59:59.000Z

215

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

216

A novel method of bitumen extraction from asphalt pavement  

SciTech Connect (OSTI)

A new method of extracting bitumen from asphalt pavement mixtures has been developed which does not require chlorinated or aromatic compounds for solvents. The preferred solvent is cyclohexane (although cyclopentane may be used) at high temperatures and pressures. The new method requires equipment that is less costly than the centrifuge method currently used and takes less time than extractions with Bioact but more time than when chlorocompounds are used.

Houser, T.J. (Western Michigan Univ., Kalamazoo (United States))

1990-07-01T23:59:59.000Z

217

Extraction of metals using supercritical fluid and chelate forming legand  

DOE Patents [OSTI]

A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a supercritical fluid solvent containing a chelating agent is described. The chelating agent forms chelates that are soluble in the supercritical fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is a fluorinated .beta.-diketone. In especially preferred embodiments the extraction solvent is supercritical carbon dioxide, and the chelating agent comprises a fluorinated .beta.-diketone and a trialkyl phosphate, or a fluorinated .beta.-diketone and a trialkylphosphine oxide. Although a trialkyl phosphate can extract lanthanides and actinides from acidic solutions, a binary mixture comprising a fluorinated .beta.-diketone and a trialkyl phosphate or a trialkylphosphine oxide tends to enhance the extraction efficiencies for actinides and lanthanides. The method provides an environmentally benign process for removing contaminants from industrial waste without using acids or biologically harmful solvents. The method is particularly useful for extracting actinides and lanthanides from acidic solutions. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process.

Wai, Chien M. (Moscow, ID); Laintz, Kenneth E. (Los Alamos, NM)

1998-01-01T23:59:59.000Z

218

Extraction of metals using supercritical fluid and chelate forming ligand  

DOE Patents [OSTI]

A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a supercritical fluid solvent containing a chelating agent is described. The chelating agent forms chelates that are soluble in the supercritical fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent is a fluorinated {beta}-diketone. In especially preferred embodiments the extraction solvent is supercritical carbon dioxide, and the chelating agent comprises a fluorinated {beta}-diketone and a trialkyl phosphate, or a fluorinated {beta}-diketone and a trialkylphosphine oxide. Although a trialkyl phosphate can extract lanthanides and actinides from acidic solutions, a binary mixture comprising a fluorinated {beta}-diketone and a trialkyl phosphate or a trialkylphosphine oxide tends to enhance the extraction efficiencies for actinides and lanthanides. The method provides an environmentally benign process for removing contaminants from industrial waste without using acids or biologically harmful solvents. The method is particularly useful for extracting actinides and lanthanides from acidic solutions. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process. 7 figs.

Wai, C.M.; Laintz, K.E.

1998-03-24T23:59:59.000Z

219

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,...

220

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...

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

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

222

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

223

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

224

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

225

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

226

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

227

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

228

Management of water extracted from carbon sequestration projects  

SciTech Connect (OSTI)

Throughout the past decade, frequent discussions and debates have centered on the geological sequestration of carbon dioxide (CO{sub 2}). For sequestration to have a reasonably positive impact on atmospheric carbon levels, the anticipated volume of CO{sub 2} that would need to be injected is very large (many millions of tons per year). Many stakeholders have expressed concern about elevated formation pressure following the extended injection of CO{sub 2}. The injected CO{sub 2} plume could potentially extend for many kilometers from the injection well. If not properly managed and monitored, the increased formation pressure could stimulate new fractures or enlarge existing natural cracks or faults, so the CO{sub 2} or the brine pushed ahead of the plume could migrate vertically. One possible tool for management of formation pressure would be to extract water already residing in the formation where CO{sub 2} is being stored. The concept is that by removing water from the receiving formations (referred to as 'extracted water' to distinguish it from 'oil and gas produced water'), the pressure gradients caused by injection could be reduced, and additional pore space could be freed up to sequester CO{sub 2}. Such water extraction would occur away from the CO{sub 2} plume to avoid extracting a portion of the sequestered CO{sub 2} along with the formation water. While water extraction would not be a mandatory component of large-scale carbon storage programs, it could provide many benefits, such as reduction of pressure, increased space for CO{sub 2} storage, and potentially, 'plume steering.' Argonne National Laboratory is developing information for the U.S. Department of Energy's (DOE's) National Energy Technology Laboratory (NETL) to evaluate management of extracted water. If water is extracted from geological formations designated to receive injected CO{sub 2} for sequestration, the project operator will need to identify methods for managing very large volumes of water most of which will contain large quantities of salt and other dissolved minerals. Produced water from oil and gas production also typically contains large quantities of dissolved solids. Therefore, many of the same practices that are established and used for managing produced water also may be applicable for extracted water. This report describes the probable composition of the extracted water that is removed from the formations, options for managing the extracted water, the pros and cons of those options, and some opportunities for beneficial use of the water. Following the introductory material in Chapter 1, the report is divided into chapters covering the following topics: (Chapter 2) examines the formations that are likely candidates for CO{sub 2} sequestration and provides a general evaluation of the geochemical characteristics of the formations; (Chapter 3) makes some preliminary estimates of the volume of water that could be extracted; (Chapter 4) provides a qualitative review of many potential technologies and practices for managing extracted water and for each technology or management practice, pros and cons are provided; (Chapter 5) explores the potential costs of water management; and (Chapter 6) presents the conclusions.

Harto, C. B.; Veil, J. A. (Environmental Science Division)

2011-03-11T23:59:59.000Z

229

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

230

Fluctuations in Single-Shot $?$-Deterministic Work Extraction  

E-Print Network [OSTI]

In the single-shot regime it is argued that the criterion for allowed state transitions ought to be more restricted than the second law of thermodynamics, and is given by a condition called thermo-majorisation. Hence to arrive at a fluctuation theorem for the single-shot scenario, such a restriction has to be taken into account. Here we formulate and prove a tighter fluctuation relation for the single-shot $\\epsilon$-deterministic work extraction. The result links two areas of thermodynamics which have been of great interest recently, fluctuation relations for non-equilibrium processes and the $\\epsilon$-deterministic work extractable from single microscopic non-equilibrium systems. Furthermore, in doing so, we unify the notions of fluctuation in $\\epsilon$-deterministic work extraction and in fluctuation theorems.

Sina Salek; Karoline Wiesner

2015-04-20T23:59:59.000Z

231

AQUEOUS BIPHASE EXTRACTION FOR PROCESSING OF FINE COAL  

SciTech Connect (OSTI)

The objective of this research project is to develop an aqueous biphase extraction process for the treatment of fine coals. Aqueous biphase extraction is an advanced separation technology that relies on the ability of an aqueous system consisting of a water-soluble polymer and another component, e.g., another polymer, an inorganic salt, or a nonionic surfactant, to separate into two immiscible aqueous phases. The principle behind the partition of solid particles in aqueous biphase systems is the physicochemical interaction between the solid surface and the surrounding liquid solution. In order to remove sulfur and mineral matter from fine coal with aqueous biphasic extraction, it is necessary to know the partitioning behavior of coal, as well as the inorganic mineral components. Therefore, in this research emphasis was placed on the partitioning behavior of fine coal particles as well as model fine inorganic particles in aqueous biphase systems.

K. Osseo-Asare; X. Zeng

2002-01-01T23:59:59.000Z

232

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

233

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

234

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

235

Review Article: The Effects of Radiation Chemistry on Solvent Extraction 3: A Review of Actinide and Lanthanide Extraction  

SciTech Connect (OSTI)

The partitioning of the long-lived ?-emitters and the high-yield fission products from dissolved nuclear fuel is a key component of processes envisioned for the safe recycling of nuclear fuel and the disposition of high-level waste. These future processes will likely be based on aqueous solvent extraction technologies for light water reactor fuel and consist of four main components for the sequential separation of uranium, fission products, group trivalent actinides and lanthanides, and then trivalent actinides from lanthanides. Since the solvent systems will be in contact with highly radioactive solutions, they must be robust toward radiolytic degradation in an irradiated mixed organic, aqueous acidic environment. Therefore, an understanding of their radiation chemistry is important to the design of a practical system. In the first paper in this series we reviewed the radiation chemistry of irradiated aqueous nitric acid and the tributyl phosphate ligand for uranium extraction in the first step of these extractions. In the second, we reviewed the radiation chemistry of the ligands proposed for use in the extraction of cesium and strontium fission products. Here, we review the radiation chemistry of the ligands that might be used in the third step in the series of separations, for the group extraction of the lanthanides and actinides. This includes traditional organophosphorous reagents such as CMPO and HDEHP, as well as novel reagents such as the amides and diamides currently being investigated.

Bruce J. Mincher; Giuseppe Modolo; Stephen P. Mezyk

2009-12-01T23:59:59.000Z

236

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

1950-01-01T23:59:59.000Z

237

Malonamides as new extractants for nuclear waste solutions  

SciTech Connect (OSTI)

A new class of extractants has been investigated: pentaalkylpropane diamides. Due to their chelating effect on metallic cations, they extract trivalent actinides such as Am{sup 3+} and Cm{sup 3+} from acidic nitrate nuclear waste solutions. These solvents are completely incinerable and do not generate large amounts of waste. A review is provided of their chemical properties, leading to the choice of the proper molecule. The results of a bench-scale experiment performed in a mixer-settler battery are presented.

Cuillerdier, C.; Musikas, C.; Hoel, P.; Nigond, L.; Vitart, X. (Commissariat a L'Energie Atomique, Fontenay-aux-Roses (France))

1991-09-01T23:59:59.000Z

238

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

239

Preparation of DNA-containing extract for PCR amplification  

DOE Patents [OSTI]

Environmental samples typically include impurities that interfere with PCR amplification and DNA quantitation. Samples of soil, river water, and aerosol were taken from the environment and added to an aqueous buffer (with or without detergent). Cells from the sample are lysed, releasing their DNA into the buffer. After removing insoluble cell components, the remaining soluble DNA-containing extract is treated with N-phenacylthiazolium bromide, which causes rapid precipitation of impurities. Centrifugation provides a supernatant that can be used or diluted for PCR amplification of DNA, or further purified. The method may provide a DNA-containing extract sufficiently pure for PCR amplification within 510 minutes.

Dunbar, John M.; Kuske, Cheryl R.

2006-07-11T23:59:59.000Z

240

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

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

Angular momentum extraction by gravity waves in the Sun  

E-Print Network [OSTI]

We review the behavior of the oscillating shear layer produced by gravity waves below the surface convection zone of the Sun. We show that, under asymmetric filtering produced by this layer, gravity waves of low spherical order, which are stochastically excited at the base of the convection zone of late type stars, can extract angular momentum from their radiative interior. The time-scale for this momentum extraction in a Sun-like star is of the order of 10^7 years. The process is particularly efficient in the central region, and it could produce there a slowly rotating core.

Suzanne Talon; Pawan Kumar; Jean-Paul Zahn

2002-06-27T23:59:59.000Z

242

Quantum key distribution with key extracted from basis information  

E-Print Network [OSTI]

In conventional quantum key distribution protocols, the secure key is normally extracted from the measurement outcomes of the system. Here, a different approach is proposed, where the secure key is extracted from the measurement bases, rather than outcomes. Compared to the original Bennett-Brassard-1984 protocol, the proposed protocol involves no hardware change but modifications in data postprocessing. We show that this protocol is more robust against detector efficiency attacks and photon-number-splitting attacks when practical detectors and photon sources are used.

Xiongfeng Ma

2014-10-20T23:59:59.000Z

243

Magma energy: engineering feasibility of energy extraction from magma bodies  

SciTech Connect (OSTI)

A research program was carried out from 1975 to 1982 to evaluate the scientific feasibility of extracting energy from magma, i.e., to determine if there were any fundamental scientific roadblocks to tapping molten magma bodies at depth. The next stage of the program is to evaluate the engineering feasibility of extracting energy from magma bodies and to provide insight into system economics. This report summarizes the plans, schedules and estimated costs for the engineering feasibility study. Tentative tasks and schedules are presented for discussion and critique. A bibliography of past publications on magma energy is appended for further reference. 69 references.

Traeger, R.K.

1983-12-01T23:59:59.000Z

244

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, Lamar T. (Knoxville, TN)

1988-01-01T23:59:59.000Z

245

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

246

Extracting alcohols from aqueous solutions. [USDOE patent application  

DOE Patents [OSTI]

The objective is to provide an efficient process for extracting alcohols in aqueous solutions into hydrocarbon fuel mixtures, such as gasoline, diesel fuel and fuel oil. This is done by contacting an aqueous fermentation liquor with a hydrocarbon or hydrocarbon mixture containing carbon compounds having 5-18 carbon atoms, which may include gasoline, diesel fuel or fuel oil. The hydrocarbon-aqueous alcohol solution is then mixed with one or more of a group of polyoxyalkylene polymers to extract the alcohol into the hydrocarbon fuel-polyoxyalkylene polymer mixture.

Compere, A.L.; Googin, J.M.; Griffith, W.L.

1981-12-02T23:59:59.000Z

247

Extraction of pores from microtomographic reconstructions of intact soil aggregates  

SciTech Connect (OSTI)

Segmentation of features is often a necessary step in the analysis of volumetric data. The authors have developed a simple technique for extracting voids from irregular volumetric data sets. In this work they look at extracting pores from soil aggregates. First, they identify a threshold that gives good separability of the object from the background. They then segment the object, and perform connected components analysis on the pores within the object. Using their technique pores that break the surface can be segmented along with pores completely contained in the initially segmented object.

Albee, P. B.; Stockman, G. C.; Smucker, A. J. M.

2000-02-29T23:59:59.000Z

248

Sludge Treatment and Extraction Technology Development: Results of FY 1993 studies  

SciTech Connect (OSTI)

This report describes experimental results from work conducted in FY 1993 under the Sludge Treatment and Extraction Technology Development Task of the Tank Waste Remediation System (TWRS) Pretreatment Technology Development Project at Pacific Northwest Laboratory (PNL). Experiments were conducted in the following six general areas: (1) sludge washing, (2) sludge leaching, (3) sludge dissolution, (4) actinide separation by solvent extraction and extraction chromatography, (5) Sr separation by solvent extraction, and (6) extraction of Cs from acidic solution.

Lumetta, G.J.; Wagner, M.J.; Barrington, R.J.; Rapko, B.M.; Carlson, C.D.

1994-03-01T23:59:59.000Z

249

Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids  

SciTech Connect (OSTI)

Executive Summary Simbol Materials studied various methods of extracting valuable minerals from geothermal brines in the Imperial Valley of California, focusing on the extraction of lithium, manganese, zinc and potassium. New methods were explored for managing the potential impact of silica fouling on mineral extraction equipment, and for converting silica management by-products into commercial products.` Studies at the laboratory and bench scale focused on manganese, zinc and potassium extraction and the conversion of silica management by-products into valuable commercial products. The processes for extracting lithium and producing lithium carbonate and lithium hydroxide products were developed at the laboratory scale and scaled up to pilot-scale. Several sorbents designed to extract lithium as lithium chloride from geothermal brine were developed at the laboratory scale and subsequently scaled-up for testing in the lithium extraction pilot plant. Lithium The results of the lithium studies generated the confidence for Simbol to scale its process to commercial operation. The key steps of the process were demonstrated during its development at pilot scale: 1. Silica management. 2. Lithium extraction. 3. Purification. 4. Concentration. 5. Conversion into lithium hydroxide and lithium carbonate products. Results show that greater than 95% of the lithium can be extracted from geothermal brine as lithium chloride, and that the chemical yield in converting lithium chloride to lithium hydroxide and lithium carbonate products is greater than 90%. The product purity produced from the process is consistent with battery grade lithium carbonate and lithium hydroxide. Manganese and zinc Processes for the extraction of zinc and manganese from geothermal brine were developed. It was shown that they could be converted into zinc metal and electrolytic manganese dioxide after purification. These processes were evaluated for their economic potential, and at the present time Simbol Materials is evaluating other products with greater commercial value. Potassium Silicotitanates, zeolites and other sorbents were evaluated as potential reagents for the extraction of potassium from geothermal brines and production of potassium chloride (potash). It was found that zeolites were effective at removing potassium but the capacity of the zeolites and the form that the potassium is in does not have economic potential. Iron-silica by-product The conversion of iron-silica by-product produced during silica management operations into more valuable materials was studied at the laboratory scale. Results indicate that it is technically feasible to convert the iron-silica by-product into ferric chloride and ferric sulfate solutions which are precursors to a ferric phosphate product. However, additional work to purify the solutions is required to determine the commercial viability of this process. Conclusion Simbol Materials is in the process of designing its first commercial plant based on the technology developed to the pilot scale during this project. The investment in the commercial plant is hundreds of millions of dollars, and construction of the commercial plant will generate hundreds of jobs. Plant construction will be completed in 2016 and the first lithium products will be shipped in 2017. The plant will have a lithium carbonate equivalent production capacity of 15,000 tonnes per year. The gross revenues from the project are expected to be approximately $ 80 to 100 million annually. During this development program Simbol grew from a company of about 10 people to over 60 people today. Simbol is expected to employ more than 100 people once the plant is constructed. Simbol Materials business is scalable in the Imperial Valley region because there are eleven geothermal power plants already in operation, which allows Simbol to expand its business from one plant to multiple plants. Additionally, the scope of the resource is vast in terms of potential products such as lithium, manganese and zinc and potentially potassium.

Harrison, Stephen [SIMBOL Materials

2014-04-30T23:59:59.000Z

250

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

251

Review of technical literature and trends related to automobile mass-reduction technology  

E-Print Network [OSTI]

the vehicle Heavy use of dual-phase steel structures, bakematerials include dual phase, martinsitic, and boron steels.

Lutsey, Nicholas P.

2010-01-01T23:59:59.000Z

252

Evaluation of the Estrogenic Effects of Legume Extracts Containing Phytoestrogens  

E-Print Network [OSTI]

(Phaseolus vulgaris L.), alfalfa sprout (Medicago sativa L.), mung bean sprout (Vigna radiata L.), kudzu root of kudzu root and red clover blossom showed significant competitive binding to estrogen receptor (ER. Kudzu root, red clover blossom and sprout, mung bean sprout, and alfalfa sprout extracts displayed

McLachlan, John

253

CONSIDERING SHALE GAS EXTRACTION IN NORTH CAROLINA: LESSONS FROM OTHER  

E-Print Network [OSTI]

hearings on the issues of horizontal drilling and hydraulic fracturing for shale gas extraction. 3 Unlike viable in recent years due to advances in horizontal drilling and hydraulic fracturing techniques, which prohibits both horizontal drilling and the injection of waste (including hydraulic fracturing fluids

Jackson, Robert B.

254

A Laser-Wire System at the ATF Extraction Line  

SciTech Connect (OSTI)

A new laser-wire (LW) system has been installed at the ATF extraction line at KEK, Tsukuba. The system aims at a micron-scale laser spot size and employs a mode-locked laser system. The purpose-built interaction chamber, light delivery optics, and lens systems are described, and the first results are presented.

Boogert, S.T.; Blair, G.; Boorman, G.; Bosco, A.; Deacon, L.; Driouichi, C.; Karataev, P.; /Royal Holloway, U. of London; Kamps, T.; /BESSY, Berlin; Delerue, N.; Dixit, S.; Foster, B.; Gannaway, F.; Howell, D.F.; Qureshi, M.; Reichold, A.; Senanayake, R.; /Oxford U.; Aryshev, A.; Hayano, H.; Kubo, K.; Terunuma, N.; Urakawa, J.; /KEK, Tsukuba /Liverpool

2007-02-12T23:59:59.000Z

255

Kernel Machine Based Feature Extraction Algorithms for Regression Problems  

E-Print Network [OSTI]

Kernel Machine Based Feature Extraction Algorithms for Regression Problems Csaba Szepesvツエari 1 and Andrツエas Kocsor and Kornツエel Kovツエ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

256

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

257

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

258

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

259

Process for the extraction of technetium from uranium  

DOE Patents [OSTI]

A spent fuel reprocessing method contacts an aqueous solution containing Technetium(V) and uranyl with an acidic solution comprising hydroxylamine hydrochloride or acetohydroxamic acid to reduce Tc(V) to Tc(II, and then extracts the uranyl with an organic phase, leaving technetium(II) in aqueous solution.

Gong, Cynthia-May S. (San Mateo, CA); Poineau, Frederic (Las Vegas, NV); Czerwinski, Kenneth R. (Las Vegas, NV)

2010-12-21T23:59:59.000Z

260

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, Universitテゥ de

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

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

262

Bi-directionally draining pore fluid extraction vessel  

DOE Patents [OSTI]

The invention is used to extract pore fluid from porous solids through a combination of mechanical compression and inert-gas injection and comprises a piston for axially compressing samples to force water out, and top and bottom drainage plates for capturing the exuded water and using inert gas to force water to exit when the limits of mechanical compression have been reached.

Prizio, Joseph (Boulder, CO); Ritt, Alexander (Lakewood, CO); Mower, Timothy E. (Wheat Ridge, CO); Rodine, Lonn (Arvada, CO)

1991-01-01T23:59:59.000Z

263

Identifying Decomposition Products in Extracts of Cellular Metabolites  

E-Print Network [OSTI]

with methanol:water, cold temperature and a high methanol fraction minimizes artifacts due to metabolite the efficiency of extracting E. coli with boiling ethanol:water, cold versus hot methanol:water, and perchloric Escherichia coli with different methanol:water mixtures, we observed that 50% water gave increased yield

Rabinowitz, Joshua D.

264

INTRODUCTION Extraction of granite from lower crust, and its  

E-Print Network [OSTI]

INTRODUCTION Extraction of granite from lower crust, and its emplacement at shallower levels, is the principal mechanism by which the continents have be- come differentiated. Thus, understanding how granite orogenic belts spatial and tem- poral relationships between granite and regional tectonic structures

Solar, Gary S.

265

Extracting Business Rules from COBOL: A Model-Based Framework  

E-Print Network [OSTI]

Extracting Business Rules from COBOL: A Model-Based Framework Valerio Cosentino AtlanMod, INRIA in their Information Systems for their daily operations. This logic im- plements the business rules in place clear which business rules are enforced nor whether rules are still consistent with the current

Paris-Sud XI, Universitテゥ de

266

Real-Time Event Extraction Infectious Disease Outbreaks  

E-Print Network [OSTI]

; potentially relevant stories are fed to an information extraction engine, whose output is used to update Yangarber roman@cs.nyu.edu ABSTRACT We describe a system for creating and automatically updating a data base of information on infectious disease outbreaks. A web crawler is used to retrieve current news stories

267

Seismic Volume Visualization for Horizon Extraction Daniel Patel  

E-Print Network [OSTI]

Seismic Volume Visualization for Horizon Extraction Daniel Patel Christian Michelsen Researchツィoller ツァ Institute of Computer Graphics and Algorithms, Vienna University of Technology, Austria ABSTRACT Seismic present a novel system for rapidly interpret- ing and visualizing seismic volumetric data. First we

268

Blind channel identification and extraction of more sources than sensors  

E-Print Network [OSTI]

Blind channel identification and extraction of more sources than sensors P. Comonba a I3S that a static system with more inputs (sources) than outputs (sensors, or channels) cannot be blindly identified blind identification problem. Here, in order to demonstrate its feasibility, the procedure is detailed

Paris-Sud XI, Universit de

269

Heat extraction for the CSPonD thermal storage unit  

E-Print Network [OSTI]

Three coiled tube heat exchanger prototypes were designed to extract heat from containers holding 0.5 kg, 2.3 kg, and 10.5 kg of Sodium Nitrate-Potassium Nitrate salt. All of the prototypes were left with an open surface ...

Rojas, Folkers Eduardo

2011-01-01T23:59:59.000Z

270

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.

271

Electrode Selection for Noninvasive Fetal Electrocardiogram Extraction using Mutual  

E-Print Network [OSTI]

, Sharif University of Technology, Tehran, Iran Machine Learning Group (MLG), Microelectronics Laboratory to be promising approaches for the noninvasive extraction of fetal cardiac signals from maternal abdominal recordings. From previous studies, it is now believed that a carefully selected array of electrodes well

Verleysen, Michel

272

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 Kavティ Salamatian

Paris-Sud XI, Universitテゥ de

273

Unsupervised extraction of coherent regions for image based rendering  

E-Print Network [OSTI]

Unsupervised extraction of coherent regions for image based rendering Jesse Berent and Pier Luigi, UK {jesse.berent, p.dragotti}@imperial.ac.uk Abstract Image based rendering using undersampled light information. In pop-up light field rendering [18], the scene is segmented into coherent layers, usually

Dragotti, Pier Luigi

274

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

275

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

276

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 ー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

277

Improved method for extracting lanthanides and actinides from acid solutions  

DOE Patents [OSTI]

A process for the recovery of actinide and lanthanide values from aqueous acidic solutions uses a new series of neutral bi-functional extractants, the alkyl(phenyl)-N,N-dialkylcarbamoylmethylphosphine oxides. The process is suitable for the separation of actinide and lanthanide values from fission product values found together in high-level nuclear reprocessing waste solutions.

Horwitz, E.P.; Kalina, D.G.; Kaplan, L.; Mason, G.W.

1983-07-26T23:59:59.000Z

278

Temporal-Harmonic Specific POD Mode Extraction Gilead Tadmor  

E-Print Network [OSTI]

Temporal-Harmonic Specific POD Mode Extraction Gilead Tadmor and Daniel Bissex Electrical changes the systems mean field changes significantly, as does the leading shedding harmonic4 , once mode pair will capture harmonically rich time dynamics, reflecting a spatial mix of multiple vortical

Dabiri, John O.

279

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

280

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

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

AUTOMATED EXTRACTION OF LECTURE OUTLINES FROM LECTURE VIDEOS  

E-Print Network [OSTI]

AUTOMATED EXTRACTION OF LECTURE OUTLINES FROM LECTURE VIDEOS A Hybrid Solution for Lecture Video}@hpi.uni-potsdam.de Keywords: Recorded Lecture Videos, Tele-teaching, Video Indexing, Multimedia Retrieval. Abstract: Multimedia-based tele-teaching and lecture video portals have become more and more popular in the last few

Weske, Mathias

282

Extraction costs in the theory of exhaustible resources  

E-Print Network [OSTI]

Extraction costs in the theory of exhaustible resources Robert M. Solow Professor of Economics. First, it reformulates the theory of optimal use of an exhaustible resource with more attention in the supply of exhausti- ble resources. Our most striking result is, in fact, the suggestion that relatively

Wan, Frederic Yui-Ming

283

Smart Grid Voltage Sag Detection using Instantaneous Features Extraction  

E-Print Network [OSTI]

Smart Grid Voltage Sag Detection using Instantaneous Features Extraction Yassine Amirat, Mohamed Benbouzid, Tianzhen Wang and Sylvie Turri Abstract--Smart grids have initiated a radical reappraisal, and effective use of the network are indexed as the most important keys for smart grid expansion and deployment

Boyer, Edmond

284

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

285

The extraction of bitumen from western tar sands  

SciTech Connect (OSTI)

Topics discussed include: characterization of bitumen impregnated sandstone, water based tar sand separation technology, electrophoretic characterization of bitumen and fine mineral particles, bitumen and tar sand slurry viscosity, the hot water digestion-flotation process, electric field use on breaking water-in-oil emulsions, upgrading of bitumens and bitumen-derived liquids, solvent extraction.

Oblad, A.G.; Bunger, J.W.; Deo, M.D.; Hanson, F.V.; Miller, J.D.; Seader, J.D.

1990-07-01T23:59:59.000Z

286

The extraction of bitumen from western tar sands. Annual report  

SciTech Connect (OSTI)

Topics discussed include: characterization of bitumen impregnated sandstone, water based tar sand separation technology, electrophoretic characterization of bitumen and fine mineral particles, bitumen and tar sand slurry viscosity, the hot water digestion-flotation process, electric field use on breaking water-in-oil emulsions, upgrading of bitumens and bitumen-derived liquids, solvent extraction.

Oblad, A.G.; Bunger, J.W.; Deo, M.D.; Hanson, F.V.; Miller, J.D.; Seader, J.D.

1990-07-01T23:59:59.000Z

287

Oxford University Press 2005 1 Text Mining and Information Extraction  

E-Print Network [OSTI]

ツゥ Oxford University Press 2005 1 Text Mining and Information Extraction Novel Unsupervised Feature Filtering of Biological Data Roy Varshavsky1,* , Assaf Gottlieb2 , Michal Linial3 and David Horn2 1 School developed for selecting small informative feature subsets in large noisy data. However, unsuper- vised

Horn, David

288

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, Universitテゥ de

289

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

290

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

291

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

292

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

293

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痴 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

294

Injection/Extraction Studies for the Muon FFAG  

SciTech Connect (OSTI)

The non-scaling fixed field alternating gradient (NS-FFAG) ring is a candidate muon accelerator in the Neutrino Factory complex according to the present baseline, which is currently being addressed by the International Design Study (IDS-NF). In order to achieve small orbit excursion, motivated by magnet cost reduction, and small time of flight variation, dictated by the need to use high RF frequency, lattices with a very compact cell structure and short straight sections are required. The resulting geometry dictates very difficult constraints on the injection/extraction systems. Beam dynamics in the non-scaling FFAG is studied using codes capable of correctly tracking with large transverse amplitude and momentum spread. The feasibility of injection/extraction is studied and various implementations focusing on minimization of kicker/septum strength are presented. Finally the parameters of the resulting kicker magnets are estimated.

Pasternak, J. [Imperial College London, Department of Physics, London (United Kingdom); STFC/RAL/ISIS, Chilton, Didcot, Oxon (United Kingdom); Aslaninejad, M. [Imperial College London, Department of Physics, London (United Kingdom); Berg, J. Scott [BNL, Upton, Long Island, New York (United States); Kelliher, D. J.; Machida, S. [STFC/ASTeC/RAL, Chilton, Didcot, Oxon (United Kingdom)

2010-03-30T23:59:59.000Z

295

Strategies for the characteristic extraction of gravitational waveforms  

SciTech Connect (OSTI)

We develop, test, and compare new numerical and geometrical methods for improving the accuracy of extracting waveforms using characteristic evolution. The new numerical method involves use of circular boundaries to the stereographic grid patches which cover the spherical cross sections of the outgoing null cones. We show how an angular version of numerical dissipation can be introduced into the characteristic code to damp the high frequency error arising form the irregular way the circular patch boundary cuts through the grid. The new geometric method involves use of the Weyl tensor component {psi}{sub 4} to extract the waveform as opposed to the original approach via the Bondi news function. We develop the necessary analytic and computational formula to compute the O(1/r) radiative part of {psi}{sub 4} in terms of a conformally compactified treatment of null infinity. These methods are compared and calibrated in test problems based upon linearized waves.

Babiuc, M. C. [Department of Physics, Marshall University, Huntington, West Virginia 25755 (United States); Bishop, N. T. [Department of Mathematical Sciences, University of South Africa, Unisa 0003 (South Africa); Szilagyi, B. [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, 14476 Golm (Germany); Theoretical Astrophysics, California Institute of Technology, Pasadena, California 91125 (United States); Winicour, J. [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, 14476 Golm (Germany); Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)

2009-04-15T23:59:59.000Z

296

Simulation of the thermodynamic properties of organic extraction solutions  

SciTech Connect (OSTI)

A method is proposed for the simulation of the activity coefficients of the components, the excess volume, the heat of mixing, and other excess thermodynamic functions of organic extraction solutions. The method is based on a search in an assigned region for parameters of the NRTL equations of local composition for which the state of the solution satisfies the requirements of chemical thermodynamics, as well as the assigned recovery criteria. The following binary systems of the solvent-extractant, and solvent-solvate types have been simulated according to the program developed on an ES-1033 computer: C6H/sub 14/-TBP, CHC1/sub 3/-TBP, CC1/sub 4/-TBP, UO/sub 2/(NO/sub 3/)/sub 2/ X 2TBP-TBP, and CC1/sub 4/-UO/sub 2/(NO/sub 3/)/sub 2/ X 2TBP.

Kolker, A.R.

1986-05-01T23:59:59.000Z

297

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

298

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway  

SciTech Connect (OSTI)

In support of the Bioenergy Technologies Office, the National Renewable Energy Laboratory (NREL) and the Pacific Northwest National Laboratory (PNNL) are undertaking studies of biomass conversion technologies to identify barriers and target research toward reducing conversion costs. Process designs and preliminary economic estimates for each of these pathway cases were developed using rigorous modeling tools (Aspen Plus and Chemcad). These analyses incorporated the best information available at the time of development, including data from recent pilot and bench-scale demonstrations, collaborative industrial and academic partners, and published literature and patents. 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.

Davis, Ryan; Biddy, Mary J.; Jones, Susanne B.

2013-03-31T23:59:59.000Z

299

Fluid extraction using carbon dioxide and organophosphorus chelating agents  

DOE Patents [OSTI]

Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO{sub 2}, and a chelating agent are described. The chelating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO{sub 2} and the chelating agent comprises an organophosphorous chelating agent, particularly sulfur-containing organophosphorous chelating agents, including mixtures of chelating agents. Examples of chelating agents include monothiophosphinic acid, di-thiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process. 1 fig.

Smart, N.G.; Wai, C.M.; Lin, Y.; Kwang, Y.H.

1998-11-24T23:59:59.000Z

300

Fluid extraction using carbon dioxide and organophosphorus chelating agents  

DOE Patents [OSTI]

Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO.sub.2, and a chelating agent are described. The chelating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO.sub.2 and the chelating agent comprises an organophosphorous chelating agent, particularly sulfur-containing organophosphorous chelating agents, including mixtures of chelating agents. Examples of chelating agents include monothiophosphinic acid, di-thiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process.

Smart, Neil G. (Moscow, ID); Wai, Chien M. (Moscow, ID); Lin, Yuehe (Moscow, ID); Kwang, Yak Hwa (Moscow, ID)

1998-01-01T23:59:59.000Z

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.


301

Automatic Labeling for Entity Extraction in Cyber Security  

SciTech Connect (OSTI)

Timely analysis of cyber-security information necessitates automated information extraction from unstructured text. While state-of-the-art extraction methods produce extremely accurate results, they require ample training data, which is generally unavailable for specialized applications, such as detecting security related entities; moreover, manual annotation of corpora is very costly and often not a viable solution. In response, we develop a very precise method to automatically label text from several data sources by leveraging related, domain-specific, structured data and provide public access to a corpus annotated with cyber-security entities. Next, we implement a Maximum Entropy Model trained with the average perceptron on a portion of our corpus (~750,000 words) and achieve near perfect precision, recall, and accuracy, with training times under 17 seconds.

Bridges, Robert A [ORNL] [ORNL; Jones, Corinne L [ORNL] [ORNL; Iannacone, Michael D [ORNL] [ORNL; Testa, Kelly M [ORNL] [ORNL; Goodall, John R [ORNL] [ORNL

2014-01-01T23:59:59.000Z

302

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

303

Extractions of polarized and unpolarized parton distribution functions  

SciTech Connect (OSTI)

An overview of our ongoing extractions of parton distribution functions of the nucleon is given. First JAM results on the determination of spin-dependent parton distribution functions from world data on polarized deep-inelastic scattering are presented first, and followed by a short report on the status of the JR unpolarized parton distributions. Different aspects of PDF analysis are briefly discussed, including effects of the nuclear structure of targets, target-mass corrections and higher twist contributions to the structure functions.

Jimenez-Delgado, Pedro [JLAB, Newport News, VA (United States)

2014-01-01T23:59:59.000Z

304

Antimicrobial activities of saponin-rich guar meal extract  

E-Print Network [OSTI]

A&M University in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY Approved by: Chair of Committee, Aubrey L. Cartwright Committee Members, Christopher A. Bailey... ANTIMICROBIAL ACTIVITIES OF SAPONIN-RICH GUAR MEAL EXTRACT A Dissertation by SHERIF MOHAMED HASSAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree...

Hassan, Sherif Mohamed

2009-05-15T23:59:59.000Z

305

Extracting Fish and Water Velocity from Doppler Profiler Data  

E-Print Network [OSTI]

Extracting Fish and Water Velocity from Doppler Profiler Data テ?ツコ テ 1 ツク テ? テ? テ?ツケ テ? テ敕?ツケテ? テ? 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

306

Extraction of the pretzelosity distribution from experimental data  

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

We attempt an extraction of the pretzelosity distribution ($h^{\\perp}_{1T}$) from preliminary COMPASS, HERMES, and JLAB experimental data on $\\sin(3\\phi_h - \\phi_S)$ asymmetry on proton and deuteron targets. The resulting distributions, albeit big errors, show tendency for up quark pretzelosity to be positive and down quark pretzelosity to be negative. A model relation of pretzelosity distribution and Orbital Angular Momentum of quarks is used to estimate contributions of up and down quarks.

Lefky, Christopher; Prokudin, Alexei

2015-02-01T23:59:59.000Z

307

Coupling Extraction From Off-Shell Cross-sections  

E-Print Network [OSTI]

In this note, we present a novel method of extracting the couplings of a new heavy particle to the Standard Model states. Contrary to the usual discovery process which involves studying the on-shell production, we look at regions away from resonance to take advantage of the simple scaling of the cross-section with the couplings. We apply the procedure to the case of a heavy quark as an illustration.

Baradhwaj Coleppa; Tanumoy Mandal; Subhadip Mitra

2014-10-09T23:59:59.000Z

308

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

309

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

310

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

311

Silica Extraction at the Mammoth Lakes Geothermal Site  

SciTech Connect (OSTI)

The purpose of this project is to develop a cost-effective method to extract marketable silica (SiO{sub 2}) from fluids at the Mammoth Lakes, California geothermal power plant. Marketable silica provides an additional revenue source for the geothermal power industry and therefore lowers the costs of geothermal power production. The use of this type of ''solution mining'' to extract resources from geothermal fluids eliminates the need for acquiring these resources through energy intensive and environmentally damaging mining technologies. We have demonstrated that both precipitated and colloidal silica can be produced from the geothermal fluids at Mammoth Lakes by first concentrating the silica to over 600 ppm using reverse osmosis (RO). The RO permeate can be used in evaporative cooling at the plant; the RO concentrate is used for silica and potentially other (Li, Cs, Rb) resource extraction. Preliminary results suggest that silica recovery at Mammoth Lakes could reduce the cost of geothermal electricity production by 1.0 cents/kWh.

Bourcier, W; Ralph, W; Johnson, M; Bruton, C; Gutierrez, P

2006-06-07T23:59:59.000Z

312

Atypical Balance between Occipital and Fronto-Parietal Activation for Visual Shape Extraction in Dyslexia  

E-Print Network [OSTI]

Reading requires the extraction of letter shapes from a complex background of text, and an impairment in visual shape extraction would cause difficulty in reading. To investigate the neural mechanisms of visual shape ...

Zhang, Ying

313

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

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

are being used to extract phenolic compounds from a variety of herbs, spices, condiments, tea... extract. Patent filed by the university, March 2006. HPLCAmino acid analyzer GC-MS...

314

Cytotoxic activity of Black Band Disease (BBD) extracts against the symbiotic dinoflagellate Symbiodinium sp.  

E-Print Network [OSTI]

dinoflagellate Symbiodinium sp. Nonetheless, neither the pellet recovered from the extraction nor extracts from that the production of a small toxic compound that has cytotoxic activity against Symbiodinium sp., the symbiotic

Fouke, Bruce W.

315

E-Print Network 3.0 - acids extraction protocols Sample Search...  

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

9604.00 0 Summary: by acidification with 5 ml of aqueous HCl (1 N). After extraction of the organic soluble dioic acid three times... extracted three times with ether...

316

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

2000-01-01T23:59:59.000Z

317

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

318

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

319

Evaluation of DNA extraction and handling procedures for PCR-based  

E-Print Network [OSTI]

for total genomic DNA extraction from free-living microalgae and microalgae within the gut of copepods. We efficient of the tested methods for genomic extraction from both free-living microalgae and microalgae

Frischer, Marc E.

320

Core-Shell Diamond as a Support for Solid-Phase Extraction and...  

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

a Support for Solid-Phase Extraction and High-Performance Liquid Chromatography. Core-Shell Diamond as a Support for Solid-Phase Extraction and High-Performance Liquid...

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

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

322

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.

323

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, Mテ。rcia M. C.

324

COMBINING BLIND SOURCE EXTRACTION WITH JOINT APPROXIMATE DIAGONALIZATION: THIN ALGORITHMS FOR ICA  

E-Print Network [OSTI]

COMBINING BLIND SOURCE EXTRACTION WITH JOINT APPROXIMATE DIAGONALIZATION: THIN ALGORITHMS FOR ICA contrast function is proposed for the blind signal extraction of a subset of the indepen- dent components- tion techniques with the flexibility of the methods for blind signal extraction. Its maximization leads

Cichocki, Andrzej

325

The extraction of bitumen from western oil sands. Final report, July 1989--September 1993  

SciTech Connect (OSTI)

Research and development of surface extraction and upgrading processes of western tar sands are described. Research areas included modified hot water, fluidized bed, and rotary kiln pyrolysis of tar sands for extraction of bitumen. Bitumen upgrading included solvent extraction of bitumen, and catalytic hydrotreating of bitumen. Characterization of Utah tar sand deposits is also included.

Oblad, A.G.; Bunger, J.W.; Dahlstrom, D.A.; Deo, M.D.; Fletcher, J.V.; Hanson, F.V.; Miller, J.D.; Seader, J.D.

1994-03-01T23:59:59.000Z

326

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, Universitテゥ de

327

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

328

Development of Extraction Techniques for the Detection of Signature Lipids from Oil  

SciTech Connect (OSTI)

Pure cultures, including Desulfovibrio vulgaris and Methanococcus maripaludus, were combined with model oil samples and oil/diesel mixtures to optimize extraction techniques of signature lipids from oil in support of investigation of microbial communities in oil deposit samples targets for microbial enhanced hydrocarbon recovery. Several techniques were evaluated, including standard phospholipid extraction, ether linked lipid for Archaeal bacterial detection, and high pressure extractiontechniques. Recovery of lipids ranged from 50-80percent as compared to extraction of the pure culture. Extraction efficiency was evaluated by the use of internal standards. Field samples will also be tested for recovery of signature lipids with optimized extraction techniques.

Borglin, Sharon; Geller, Jil; Chakraborty, Romy; Hazen, Terry; Mason, Olivia

2010-05-17T23:59:59.000Z

329

Two concurrent architectures for eigenvalue extraction utilizing the QR algorithm  

E-Print Network [OSTI]

Daniel, B. S . , Texas ARM University Chairman of Advisory Committee: Dr . Ralph K. Cavi n, I I I A highly concurrent planar processor array is studied and a corresponding linear processor array is devel oped wi th regar d to extracting... matrix is either the identity matrix I, or it is invertible so that a new A matrix can be found: = B-'A It is this less general class of problems that shall be dealt witn i n this thesi s . Hence, ( I) may be rewritten as: Ax = Ax or (AI - A)x = 0 (3...

McDaniel, Guy David

1983-01-01T23:59:59.000Z

330

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

331

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

332

In situ bioremediation enhanced with air sparging and vapor extraction  

SciTech Connect (OSTI)

Eaton Corporation operates a corporate airport hangar facility in central Michigan. Testing showed, and soil and groundwater investigation confirmed, that two underground storage tanks leaked. This release sent an undetermined amount of Jet A kerosene into the soil and groundwater. As a result, the Michigan Department of Natural Resources (MDNR) listed the facility on the Act 307 list of contaminated sites (Michigan equivalent of a Superfund listing). The objective of the remediation was to clean up an aquifer and soil system contaminated with Jet A kerosene. This cleanup used pump and treat, bioremediation, soil vapor extraction, and air sparging technologies.

Fesko, S. [Eaton Corp., Willoughby Hills, OH (United States)

1996-11-01T23:59:59.000Z

333

Ultrafiltration membrane performance when processing oilseed protein extracts  

E-Print Network [OSTI]

feed pressure and 654C feed temperature. The UCARSEP ABR membrane was manufactured by Union Carbide Inc. , Tarrytown, NY. The basic membrane consists of a 0. 24-inch ID tube, 48-inches long. The system, as tested consisted of two tubes connected... or peanut protein isolation by UF and RO membranes 2. Simplified flow diagram for cottonseed protein isolation by UF and RO membranes 10 3. Effect of temperature on flux of the UCARSEP membrane when processing SP extract at 1. 8% solids 19 4. Effect...

Hensley, Donald Wayne

1979-01-01T23:59:59.000Z

334

Reductive stripping process for uranium recovery from organic extracts  

DOE Patents [OSTI]

In the reductive stripping of uranium from an organic extractant in a uranium recovery process, the use of phosphoric acid having a molarity in the range of 8 to 10 increases the efficiency of the reductive stripping and allows the strip step to operate with lower aqueous to organic recycle ratios and shorter retention time in the mixer stages. Under these operating conditions, less solvent is required in the process, and smaller, less expensive process equipment can be utilized. The high strength H/sub 3/PO/sub 4/ is available from the evaporator stage of the process.

Hurst, F.J. Jr.

1983-06-16T23:59:59.000Z

335

How to Extract Energy from Dirty Interior Air  

E-Print Network [OSTI]

HOW TO EXTRACT ENERGY FROM DIRTY INTERIOR AIR William A. Cheney United Air Specialists, Inc. Cincinnati, Ohio ABSTRACT Industry is often faced with the problem of reducing the level of contaminated air in its plants. The common method... in residential and HVAC applications. With modi ~icatio~s, it .is used to control a wide range of mdustrIal partIculate contaminants. A simple diagram may help clear up any confusion that exists between the basic design of the Cottrell single stage ESP used...

Cheney, W. A.

1982-01-01T23:59:59.000Z

336

Buried telemetry system for in-situ energy extraction  

SciTech Connect (OSTI)

During an in-situ energy extraction process, a continuous knowledge of the temperature profile through the combustion area is desirable for analysis and control. To provide this data, a telemetry system has been developed that will monitor the thermocouples from beneath the process bed, digitize the data into 12 bit words and store them into memory. Every six hours, the stored data is transmitted laterally through the earth to a receiver outside of the high temperature zone and then sent to the surface by wire where it is stored on magnetic tape and processed and displayed on a Texas Instruments Silent 700 terminal.

Barnes, D. E.; Caffey, T. W.H.

1980-01-01T23:59:59.000Z

337

Less common applications of monoliths: Preconcentration andsolid-phase extraction  

SciTech Connect (OSTI)

Monolithic materials are finding their place in a variety of fields. While liquid chromatography is the most emphasized use of this new category of porous media, some other just as important applications are eclipsed by the success of monolithic columns. This review article describes all current facets of use of monoliths in preconcentration and solid-phase extraction. In addition to the typical off line use that does not seem to be the main stream application for the monolithic materials, in-line connection of the preconcentration with HPLC, electrochromatography, electrophoresis, enzymatic digestion, as well as its applications in microfluidics are presented.

Svec, Frantisek

2006-03-27T23:59:59.000Z

338

Ethanol Extraction Technologies Inc EETI | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump37. It isInformationexplains a4 Climate Zone SubtypeEtasolar LtdExtraction

339

Modeling of distribution and speciation of plutonium in the Urex extraction system  

SciTech Connect (OSTI)

The PUREX extraction process is used worldwide to recover uranium and plutonium from dissolved spent nuclear fuel using the tributylphosphate-nitric acid extraction system. In the recent decade, significant research progress was achieved with the aim to modify this system by addition of a salt-free agent to optimize stripping of plutonium from the tributylphosphate (TBP) extraction product (UREX). Experimental results on the extraction of Pu(IV) with and without acetohydroxamic acid in the HNO{sub 3}/TBP (30 vol %) were used for the development of a thermodynamic model of distribution and speciation of Pu(IV) in this separation process. Extraction constants for several sets of nitric acid, nitrate, and acetohydroxamic acid concentrations were used to model the obtained data. The extraction model AMUSE (Argonne Model for Universal Solvent Extraction) was employed in our calculations. (authors)

Paulenova, A.; Tkac, P. [Radiation Center, Oregon State University, Corvallis, OR 97331-5903 (United States); Vandegrift, G.F.; Krebs, J.F. [Argonne National Laboratory, Chemical Sciences and Engineering Division, Argonne, IL 60439-4837 (United States)

2008-07-01T23:59:59.000Z

340

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

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

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

342

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

343

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

344

Reversible work extraction in a hybrid opto-mechanical system  

E-Print Network [OSTI]

With the progress of nano-technology, thermodynamics also has to be scaled down, calling for specific protocols to extract and measure work. Usually, such protocols involve the action of an external, classical field (the battery) of infinite energy, that controls the energy levels of a small quantum system (the calorific fluid). Here we suggest a realistic device to reversibly extract work in a battery of finite energy : a hybrid optomechanical system. Such devices consist in an optically active two-level quantum system interacting strongly with a nano-mechanical oscillator that provides and stores mechanical work, playing the role of the battery. We identify protocols where the battery exchanges large, measurable amounts of work with the quantum emitter without getting entangled with it. When the quantum emitter is coupled to a thermal bath, we show that thermodynamic reversibility is attainable with state-of-the-art devices, paving the road towards the realization of a full cycle of information-to-energy conversion at the single bit level.

Cyril Elouard; Maxime Richard; Alexia Auff钁es

2015-02-16T23:59:59.000Z

345

The extraction of bitumen from western tar sands  

SciTech Connect (OSTI)

This report represents the work done during the year of May 8, 1987 to June 9, 1988. This year was the first year of a five-year program. The overall objective of the latter is to advance the technologies for recovering bitumen from the tar sands by thermal and water assisted extraction means and upgrading of bitumen to synthetic crude, and conversion of bitumens to specialty products such as asphalt and resins to levels where realistic evaluations of technical and commercial potential can be made. Additionally, it is desired to have the data at a level which is adequate for design of pilot plants of appropriate size deemed necessary for commercial scale-up of the various processes being studied. The main areas for studies covered in this report are modelling and optimization of the hydropyrolysis process for upgrading bitumens, bitumen recovery by pyrolysis of the circle Cliffs tar sands in a fluid bed, pyrolysis of Whiterocks tar sand in a rotary kiln, modelling of the combustor in the coupled fluidized bed with interbed heat transfer using heat pipes, development of superior diluents for use in the water extraction of Utah's tar sands, and fractionation and characterization of the bitumens from Asphalt Ridge and Sunnyside tar sands. 169 refs., 60 figs., 31 tars.

Oblad, A.G.; Bunger, J.W.; Hanson, F.V.; Miller, J.D.; Seader, J.D.

1989-05-01T23:59:59.000Z

346

Upgrading of solvent extracted athabasca bitumen by membrane ultrafiltration  

SciTech Connect (OSTI)

This paper reports on solvent extraction processes that have been tested extensively for the separation of bitumen from surface-mineable, oil-bearing deposits. The end result of these processes is a solution of bitumen in a hydrocarbon solvent, usually a light naphtha. The bitumen solution contains only minimal amounts of solids and water; but, because of the constraints of the solid- liquid separation and washing steps, the bitumen concentration in the produced solutions can be quite low. Solvent must be separated from these solutions for recycle back to the extraction step of the process. This is usually accomplished by conventional techniques such as distillation, multiple-effect evaporation, or steam stripping. Sometimes a combination of these techniques is required. As a result of the low bitumen content of the solutions, the energy and capital costs associated with solvent recycle can be substantial. The use of membranes for nonaqueous liquid separations is a recent application of this developing technology. Several patents can be found describing processes for the recovery of solvent used in lube oil dewaxing or the regeneration of used automotive oils. A Japanese company has reported the development of several solvent-stable ultrafiltration membranes for the removal of solids from a number of solvents. The use of spiral-wound polysulfone membranes for the recovery of pentane solvent used in heavy oil deasphalting has been described by an American firm.

Sparks, B.D.; Hazlett, J.D.; Kutowy, O.; Tweddle, T.A. (National Research Council of Canada, Montreal Road Campus, Ottawa, Ontario K1A 0R9 (CA))

1990-08-01T23:59:59.000Z

347

Preliminary studies on the recovery of bitumen from Nigerian tar sands: I. Beneficiation and solvent extraction  

SciTech Connect (OSTI)

Solvent extraction of bitumen from Nigerian tar sands using toluene has been investigated. Pulverization of the tar sands followed by agglomeration in a mechanical shaker resulted in spherical agglomerates having higher bitumen contents than the mined tar sand. The extent of beneficiation was 4% and 19% for the high grade and low grade sands, respectively. Temperature, agitation, and tar sand/solvent (S/L) ratios were found to be significant variables affecting the dissolution of bitumen from the sand. S/L ratio has the greatest effect on extraction efficiency. The rate of bitumen extraction, expressed as extractability eta* showed great dependence on agitation. About 16- and 15-fold increases in extractability were obtained for S/L ratios of 1/20 and 1/5 respectively for a 2.8 fold increase in agitation. At the initial stages of extraction, asphaltene content of the bitumen extracted at 50/sup 0/C was less than that in the bitumen extracted at 25/sup 0/C. This finding could have significant implications for the overall economics of upgrading processes. A high extraction efficiency of about 99% was obtained with stagewise extraction at high tar sand/solvent ratios.

Ademodi, B.; Oshinowo, T.; Sanni, S.A.; Dawodu, O.F.

1987-01-01T23:59:59.000Z

348

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

349

COMBINING NEUTRAL AND ACIDIC EXTRACTANTS FOR RECOVERING TRANSURANIC ELEMENTS FROM NUCLEAR FUEL  

SciTech Connect (OSTI)

We have been investigating a solvent extraction system that combines a neutral extractant--octyl(phenyl)-N,N-diisobutyl-carbamoylmethylphosphine oxide (CMPO)--with an acidic extractant--bis(2-ethylhexyl)phosphoric acid (HDEHP)--to form a single process solvent for separating Am and Cm from the other components of irradiated nuclear fuel. It was originally hypothesized that the extraction chemistry of CMPO would dominate under conditions of high acidity (> 1 M HNO3), resulting in co-extraction of the transuranic and lanthanide elements into the organic phase. Contacting the loaded solvent with a solution of diethylenetriaminepentaacetate (DTPA) buffered with lactic or citric acid at pH {approx}3 to 4 would result in a condition in which the HDEHP chemistry dominates. Although the data somewhat support this hypothesis, it is clear that there are interactions between the two extractants such that they do not act independently in the extraction and stripping regimes. We report here studies directed at determining the nature and extent of interaction between CMPO and HDEHP, the synergistic behavior of CMPO and HDEHP in the extraction of americium and neodymium, and progress towards determining the thermodynamics of this extraction system. Neodymium and americium behave similarly in the combined solvent system, with a significant synergy between CMPO and HDEHP in the extraction of both of these trivalent elements from lactate-buffered DTPA solutions. In contrast, a much weaker synergistic behaviour is observed for europium. Thus, investigations into the fundamental chemistry involved in this system have focused on the neodymium extraction. The extraction of neodymium has been systematically investigated, individually varying the HDEHP concentration, the CMPO concentration, or the aqueous phase composition. Thermodynamic modeling of the neodymium extraction system has been initiated. Interactions between CMPO and HDEHP in the organic phase must be taken into account in the thermodynamic modeling; such interactions have been quantified by nuclear magnetic resonance measurements.

Lumetta, Gregg J.; Neiner, Doinita; Sinkov, Sergey I.; Carter, Jennifer C.; Braley, Jenifer C.; Latesky, Stanley; Gelis, Artem V.; Tkac, Peter; Vandegrift, George F.

2011-10-03T23:59:59.000Z

350

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

351

Super critical fluid extraction of a crude oil bitumen-derived liquid and bitumen by carbon dioxide and propane  

SciTech Connect (OSTI)

Supercritical fluid extraction of complex hydrocarbon mixtures is important in separation processes, petroleum upgrading and enhanced oil recovery. In this study, a paraffinic crude oil, a bitumen- derived liquid and bitumen were extracted at several temperatures and pressures with carbon dioxide and propane to assess the effect of the size and type of compounds that makeup the feedstock on the extraction process. It was observed that the pure solvent density at the extraction conditions was not the sole variable governing extraction, and that the proximity of the extraction conditions to the pure solvent critical point affected the extraction yields and the compositions of the extracts. Heavier compounds reported to the extract phase as the extraction time increased at constant temperature and pressure and as the extraction pressure increased at constant temperature and extraction time for both the paraffin crude-propane and the bitumen-propane systems. This preferential extraction was not observed for the bitumen-derived liquid. The non-discriminatory extraction behavior of the bitumen-derived liquid was attributed to its thermal history and to the presence of the olefins and aromatics in the liquid. Phase behavior calculations using the Peng-Robinson equation of state and component lumping procedures provided reasonable agreement between calculated and experimental results for the crude oil and bitumen extractions, but failed in the prediction of the phase compositions for the bitumen-derived liquid extractions.

Deo, M.D.; Hwang, J.; Hanson, F.V.

1991-01-01T23:59:59.000Z

352

Super critical fluid extraction of a crude oil bitumen-derived liquid and bitumen by carbon dioxide and propane  

SciTech Connect (OSTI)

Supercritical fluid extraction of complex hydrocarbon mixtures is important in separation processes, petroleum upgrading and enhanced oil recovery. In this study, a paraffinic crude oil, a bitumen- derived liquid and bitumen were extracted at several temperatures and pressures with carbon dioxide and propane to assess the effect of the size and type of compounds that makeup the feedstock on the extraction process. It was observed that the pure solvent density at the extraction conditions was not the sole variable governing extraction, and that the proximity of the extraction conditions to the pure solvent critical point affected the extraction yields and the compositions of the extracts. Heavier compounds reported to the extract phase as the extraction time increased at constant temperature and pressure and as the extraction pressure increased at constant temperature and extraction time for both the paraffin crude-propane and the bitumen-propane systems. This preferential extraction was not observed for the bitumen-derived liquid. The non-discriminatory extraction behavior of the bitumen-derived liquid was attributed to its thermal history and to the presence of the olefins and aromatics in the liquid. Phase behavior calculations using the Peng-Robinson equation of state and component lumping procedures provided reasonable agreement between calculated and experimental results for the crude oil and bitumen extractions, but failed in the prediction of the phase compositions for the bitumen-derived liquid extractions.

Deo, M.D.; Hwang, J.; Hanson, F.V.

1991-12-31T23:59:59.000Z

353

Commercial Light Water Reactor Tritium Extraction Facility Geotechnical Summary Report  

SciTech Connect (OSTI)

A geotechnical investigation program has been completed for the Circulating Light Water Reactor - Tritium Extraction Facility (CLWR-TEF) at the Savannah River Site (SRS). The program consisted of reviewing previous geotechnical and geologic data and reports, performing subsurface field exploration, field and laboratory testing and geologic and engineering analyses. The purpose of this investigation was to characterize the subsurface conditions for the CLWR-TEF in terms of subsurface stratigraphy and engineering properties for design and to perform selected engineering analyses. The objectives of the evaluation were to establish site-specific geologic conditions, obtain representative engineering properties of the subsurface and potential fill materials, evaluate the lateral and vertical extent of any soft zones encountered, and perform engineering analyses for slope stability, bearing capacity and settlement, and liquefaction potential. In addition, provide general recommendations for construction and earthwork.

Lewis, M.R.

2000-01-11T23:59:59.000Z

354

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

355

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

356

Extracting cosmic microwave background polarisation from satellite astrophysical maps  

E-Print Network [OSTI]

We present the application of the Fast Independent Component Analysis technique for blind component separation to polarised astrophysical emission. We study how the Cosmic Microwave Background (CMB) polarised signal, consisting of $E$ and $B$ modes, can be extracted from maps affected by substantial contamination from diffuse Galactic foregrounds and instrumental noise. We perform the analysis of all sky maps simulated accordingly to the nominal performances of the Low Frequency Instrument (LFI) aboard the Planck satellite; the sky signal is modeled as a superposition of CMB, generated by a Gaussian, nearly scale invariant cosmological perturbation spectrum, and the existing simulated polarisation templates of Galactic synchrotron. Our results indicate that the angular power spectrum of CMB $E$ modes can be recovered on all scales up to $\\ell\\simeq 1000$, corresponding to the fourth acoustic oscillation, while $B$ modes can be detected, up to their turnover at $\\ell\\simeq 100$ if cosmological tensor amplitude...

Baccigalupi, C; De Zotti, G; Smoot, G F; Burigana, C; Maino, D; Bedini, L; Salerno, E

2002-01-01T23:59:59.000Z

357

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

358

Pulsed extraction of ionization from helium buffer gas  

E-Print Network [OSTI]

The migration of intense ionization created in helium buffer gas under the influence of applied electric fields is considered. First the chemical evolution of the ionization created by fast heavy-ion beams is described. Straight forward estimates of the lifetimes for charge exchange indicate a clear suppression of charge exchange during ion migration in low pressure helium. Then self-consistent calculations of the migration of the ions in the electric field of a gas-filled cell at the National Superconducting Cyclotron Laboratory (NSCL) using a Particle-In-Cell computer code are presented. The results of the calculations are compared to measurements of the extracted ion current caused by beam pulses injected into the NSCL gas cell.

D. J. Morrissey; G. Bollen; M. Facina; S. Schwarz

2008-08-13T23:59:59.000Z

359

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

360

Active Thermal Extraction of Near-field Thermal Radiation  

E-Print Network [OSTI]

Radiative heat transport between materials supporting surface-phonon polaritons is greatly enhanced when the materials are placed at sub-wavelength separation as a result of the contribution of near-field surface modes. However, the enhancement is limited to small separations due to the evanescent decay of the surface waves. In this work, we propose and numerically demonstrate an active scheme to extract these modes to the far-field. Our approach exploits the monochromatic nature of near-field thermal radiation to drive a transition in a laser gain medium, which, when coupled with external optical pumping, allows the resonant surface mode to be emitted into the far-field. Our study demonstrates a new approach to manipulate thermal radiation that could find applications in thermal management.

Ding, Ding

2015-01-01T23:59:59.000Z

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.


361

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

362

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

363

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

364

Use of Separator with Regular Granular Filling in Extraction Processes - 12209  

SciTech Connect (OSTI)

The separator with a regular granular filling has been developed to be used for the operations of the removal of carbon-black impurities from the aqueous flow; the intra-cycle regeneration of back-extractants; and the concentrating back-extraction of plutonium in the extraction SNF reprocessing technology. The process conditions for those operations have been experimentally tested using this separator. Thus, the separator for operations of concentrating reextraction of plutonium and regeneration recycling extractant allows to: - derive plutonium from the organic stream into an extremely concentrated form, reducing the amount of liquid radioactive waste (raffinate, decantate) plutonium branches to a minimum; - controlling the processes of concentration of uranium and plutonium, get uranium-plutonium product with required concentration and the amount of metal with required ratio; - eliminate contamination of the emulsion flows; - simplify the purification of uranium from the extract plutonium; - test results showed that when working on a solution 'hydrazine-DTPA' in the separator it is achieved the extraction of plutonium re-extract - 82% TC - at 56-65%. With the transition to the reextraction by solution 'U (IV)-hydrazine', of plutonium into re-extract increases to 95%, technetium - up to 83%; - regenerate the extractant recycling minimizing the amount of liquid radioactive waste generated as a technology used as well as alternative 'salt-free' systems; - it is found that the regeneration of the extractant solution of soda and EDA in the separator at a load of 3.2 m{sup 3} / (m{sup 2}.h) it can be achieved almost complete phase separation. Residual carryover of 0,005-0,006% emulsion is on the verge of analytical detection. - It is shown that in the depth of separation phase a separation of the extractant regeneration of quality superior is more than 5-7 times to the extraction. (authors)

Volk, Vladimir; Veselov, Sergey; Zherebtsov, Alexander [Joint Stock Company 'A.A. Bochvar High-Technology Scientific Research Institute of Inorganic Materials' (VNIINM), Rogova st., 5A (Russian Federation)

2012-07-01T23:59:59.000Z

365

Solvent extraction in the treatment of acidic high-level liquid waste : where do we stand?  

SciTech Connect (OSTI)

During the last 15 years, a number of solvent extraction/recovery processes have been developed for the removal of the transuranic elements, {sup 90}Sr and {sup 137}Cs from acidic high-level liquid waste. These processes are based on the use of a variety of both acidic and neutral extractants. This chapter will present an overview and analysis of the various extractants and flowsheets developed to treat acidic high-level liquid waste streams. The advantages and disadvantages of each extractant along with comparisons of the individual systems are discussed.

Horwitz, E. P.; Schulz, W. W.

1998-06-18T23:59:59.000Z

366

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

367

E-Print Network 3.0 - aerosol-to-liquid particle extraction Sample...  

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

XXXI Houston, March 2000 SIMS ISOTOPIC ANALYSIS OF INTERPLANETARY DUST FROM SPACE-EXPOSED AEROGEL. Summary: the captured residues. Extraction of particles. In the first step of the...

368

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

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

of chloroform... a method that it efficiently extracts RNA from tissues ... Source: Green, Pamela - Delaware Biotechnology Institute & Department of Plant and Soil Sciences,...

369

OLED lighting devices having multi element light extraction and luminescence conversion layer  

DOE Patents [OSTI]

An apparatus such as a light source has a multi element light extraction and luminescence conversion layer disposed over a transparent layer of the light source and on the exterior of said light source. The multi-element light extraction and luminescence conversion layer includes a plurality of light extraction elements and a plurality of luminescence conversion elements. The light extraction elements diffuses the light from the light source while luminescence conversion elements absorbs a first spectrum of light from said light source and emits a second spectrum of light.

Krummacher, Benjamin Claus (Regensburg, DE); Antoniadis, Homer (Mountain View, CA)

2010-11-16T23:59:59.000Z

370

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

371

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

372

The Effect of Nondialyzable Material (NDM) Cranberry Extract on Formation of Contact Lens Biofilm by  

E-Print Network [OSTI]

The Effect of Nondialyzable Material (NDM) Cranberry Extract on Formation of Contact Lens Biofilm PURPOSE. To assess the effects of NDM from cranberries on Staphylococcus epidermidis biofilm formed

Jacob, Eshel Ben

373

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

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

Sample search results for: automatic feature extraction Page: << < 1 2 3 4 5 > >> 1 Computer Science & Engineering Summary: throwing away crucial information. Good Features are...

374

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...

375

automatic solid-phase extraction: Topics by E-print Network  

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

University of Malta 2 Department of Computer Science, University of Malta claudia.borg|mike.rosner|gordon.pace@um.edu.mt Abstract. Definition extraction can be useful Pace,...

376

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

377

E-Print Network 3.0 - ags resonant extraction Sample Search Results  

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

VHF and UHF Capacitive Silicon Summary: of the network analyzer, the value of the equivalent motional resistance of the resonators can be extracted from... Capacitive...

378

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

379

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....

380

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:...

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

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....

382

E-Print Network 3.0 - assisted solvent extraction Sample Search...  

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

Aromatic Hydrocarbons in kerosene and bio-kerosene soot Summary: and discussion 3.1. Ultrasonic-assisted extraction Currently,there are twobasic typesofultrasonicinstrumentation......

383

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...

384

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

385

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

386

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

387

Hydrothermal energy extraction, Auburn, New York: Final report: Volume 2, Chapters 6-10  

SciTech Connect (OSTI)

This paper discusses a hydrothermal energy extraction system in detail. General topics covered are: Reservoir circulation loop; HVAC buffer loop; and automatic temperature control system. (LSP)

Castor, T.P.

1988-03-01T23:59:59.000Z

388

E-Print Network 3.0 - acanthopanax senticosus extract Sample...  

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

Collection: Biology and Medicine 7 Regulation of sterol and glycoalkaloid biosynthesis in potato (Solanum Summary: -phase extraction SQE Squalene epoxidase SQS Squalene synthase...

389

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]

characteristics of this alternative energy source are its CO2 neutrality, high biomass growth, high lipid yield, and noncompetitive stance toward food supply. To date, development of economically feasible lipid solvent extraction processes of industrial scale face...

Antezana Zbinden, Mauricio Daniel R.

2011-02-16T23:59:59.000Z

390

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

391

Extraction of Hydrological Proximity Measures from DEMs using Parallel Processing  

SciTech Connect (OSTI)

Land surface topography is one of the most important terrain properties which impact hydrological, geomorphological, and ecological processes active on a landscape. In our previous efforts to develop a soil depth model based upon topographic and land cover variables, we extracted a set of hydrological proximity measures (HPMs) from a Digital Elevation Model (DEM) as potential explanatory variables for soil depth. These HPMs may also have other, more general modeling applicability in hydrology, geomorphology and ecology, and so are described here from a general perspective. The HPMs we derived are variations of the distance up to ridge points (cells with no incoming flow) and variations of the distance down to stream points (cells with a contributing area greater than a threshold), following the flow path. These HPMs were computed using the D-infinity flow model that apportions flow between adjacent neighbors based on the direction of steepest downward slope on the eight triangular facets constructed in a 3 x 3 grid cell window using the center cell and each pair of adjacent neighboring grid cells in turn. The D-infinity model typically results in multiple flow paths between 2 points on the topography, with the result that distances may be computed as the minimum, maximum or average of the individual flow paths. In addition, each of the HPMs, are calculated vertically, horizontally, and along the land surface. Previously, these HPMs were calculated using recursive serial algorithms which suffered from stack overflow problems when used to process large datasets, limiting the size of DEMs that could be analyzed using that method to approximately 7000 x 7000 cells. To overcome this limitation, we developed a message passing interface (MPI) parallel approach for calculating these HPMs. The parallel algorithms of the HPMs spatially partition the input grid into stripes which are each assigned to separate processes for computation. Each of those processes then uses a queue data structure to order the processing of cells so that each cell is visited only once and the cross-process communications that are a standard part of MPI are handled in an efficient manner. This parallel approach allows analysis of much larger DEMs as compared to the serial recursive algorithms. In this paper, we present the definitions of the HPMs, the serial and parallel algorithms used in their extraction and their potential applications in hydrology, geomorphology and ecology.

Tesfa, Teklu K.; Tarboton, David G.; Watson, Daniel W.; Schreuders, Kimberly A.; Baker, Matthew M.; Wallace, Robert M.

2011-12-01T23:59:59.000Z

392

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

393

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

394

Kidney International, Vol. 63 (2003), pp. 17851790 Effect of green tea extract on cardiac hypertrophy following  

E-Print Network [OSTI]

Kidney International, Vol. 63 (2003), pp. 1785ツュ1790 Effect of green tea extract on cardiac tea extract on cardiac hypertrophy following and growth was also identified. Clinical studies of green species (ROS). Green tea is a sub- Patients with renal failure develop cardiac hypertrophystance

Brand, Paul H.

395

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

E-Print Network [OSTI]

1 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 and extensive margins. Our results show that energy prices have an effect on both the intensive and extensive

Lin, C.-Y. Cynthia

396

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

397

Light extraction from organic light-emitting diodes for lighting applications by sand-blasting  

E-Print Network [OSTI]

Light extraction from organic light-emitting diodes for lighting applications by sand@ust.hk Abstract: Light extraction from organic light-emitting diodes (OLEDs) by scattering the light is one of the effective methods for large-area lighting applications. In this paper, we present a very simple and cost

398

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

399

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

400

ISAP 2012 Audo et al: Relationship between microalgae lipid extracts composition and rheological properties  

E-Print Network [OSTI]

, and on lignocellulosic biomass for the second one) might be challenged by third generation biofuels based on microalgaeISAP 2012 Audo et al: Relationship between microalgae lipid extracts composition and rheological properties 1/8 Relationship between microalgae lipid extracts composition and rheological properties Audo M

Paris-Sud XI, Universit de

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

Radiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction of their Absolute Temperature  

E-Print Network [OSTI]

of Mechanical Draft Cooling Towers to Assist in the Extraction of their Absolute Temperature from Remote Thermal Abstract Determination of the internal temperature of a mechanical draft cooling tower (MDCT) from remotelyRadiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction

Salvaggio, Carl

402

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.

403

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.

404

Direct conversion of carboxylate salts to carboxylic acids via reactive extraction  

E-Print Network [OSTI]

the fermentation conversion. In this case, fermentation broth contains ammonium salts (e.g., ammonium acetate, propionate, butyrate, pentanoate). Therefore, the downstream processing steps (including extraction, purification, esterification, and product... separation) must be compatible with the ammonium carboxylate salts formed in the fermentation. This research focuses on converting fermentation broth carboxylate salts into their corresponding acids via 殿cid springing. Reactive extraction and thermal...

Xu, Xin

2008-10-10T23:59:59.000Z

405

POSTER PRESENTATION Open Access Extracts from medicinal plants inhibit cancer cell  

E-Print Network [OSTI]

the antioxidant activity, pro- tective properties and anti-proliferative capacity of Lycium europeaum and Jatropha of caspases 3/7 following cell exposure to the extracts. Lycium, as well as Jatropha extracts, seemed The present data demonstrate that Lycium europaeum and Jatropha podagrica may inhibit the proliferation

Paris-Sud XI, Universitテゥ de

406

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

407

Extracting knowledge from data originated in web sites Juan D. Velsquez 2005  

E-Print Network [OSTI]

Extracting knowledge from data originated in web sites Juan D. Velテ。squez ツゥ 2005 1 Web mining Extracting knowledge from data originated in web sites Juan D. VelJuan D. Velテ。テ。squez Silvasquez Silva knowledge from data originated in web sites Juan D. Velテ。squez ツゥ 2005 2 Outline 1. Motivation. 2. Web

Baeza-Yates, Ricardo

408

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

409

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

410

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

411

A Model Driven Reverse Engineering Framework for Extracting Business Rules out of  

E-Print Network [OSTI]

A Model Driven Reverse Engineering Framework for Extracting Business Rules out of a Java business rules out of Java source code. The use of modeling techniques facilitate the representation and justify the origin of the extracted business rules. In this sense, this paper describes a model

Paris-Sud XI, Universitテゥ de

412

New data on the characterization of humic substances extracted from phosphatised faecal "pellets" (Tunisia)  

E-Print Network [OSTI]

New data on the characterization of humic substances extracted from phosphatised faecal "pellets, Universitテゥ Tunis El Manar, 1060, Tunis, Tunisie Humic substances (HS) were extracted from faecal "pellets of the organic matter within the pellets, both from a qualitative and quantitative point of view. The elemental

Paris-Sud XI, Universitテゥ de

413

Extracting Attack Knowledge Using Principal-subordinate Consequence Tagging Case Grammar and Alerts Semantic Networks  

E-Print Network [OSTI]

Extracting Attack Knowledge Using Principal-subordinate Consequence Tagging Case Grammar and Alerts networks from Distributed Denial of Service (DDoS) attacks has become a critical issue that must be tackled, the overwhelming volume of alerts makes it difficult for security administrators to analyze and extract the attack

Ansari, Nirwan

414

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

415

Extracting CO2 from seawater: Climate change mitigation and renewable liquid fuel  

E-Print Network [OSTI]

Extracting CO2 from seawater: Climate change mitigation and renewable liquid fuel Matthew Eisaman and their impact キ Technology: Extracting CO2 from seawater キ Application: Renewable liquid fuel #12;Outline: Renewable liquid fuel #12;The data on atmospheric CO2 2000 years ago http://cdiac.ornl.gov/trends/co2

Homes, Christopher C.

416

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

417

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, Dツュ89069 Ulm, Germany. Abstract A novel method for finding extraction procedures need to achieve a strong variation of power dissipation during the extraction

418

Variation-Aware Stochastic Extraction with Large Parameter Dimensionality: Review and Comparison of  

E-Print Network [OSTI]

Variation-Aware Stochastic Extraction with Large Parameter Dimensionality: Review and Comparison summarize some of the most recent development in both sam- pling based (non-intrusive) and expansion based the stochastic model reduction algorithm for general impedance extraction un- der uncertainty and the path

Daniel, Luca

419

Topological Reconstruction of Complex 3D Buildings and Automatic Extraction of Levels of Detail  

E-Print Network [OSTI]

and outdoor topology of a detailed 3D building model from its geometry and to extract different levelsTopological Reconstruction of Complex 3D Buildings and Automatic Extraction of Levels of Detail A is needed for most of the applications using 3D building models after the architects design it. While

Boyer, Edmond

420

Sweeping Simplices: A fast iso-surface extraction algorithm for unstructured grids  

E-Print Network [OSTI]

Sweeping Simplices: A fast iso-surface extraction algorithm for unstructured grids Han-Wei Shen of iso-surfaces from unstructured grids by avoid- ing the traversal of the entire set of cells in the vol algorithm can reduce the cell traversal time more than 90% over the naive iso- surface extraction algorithm

Frey, 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.


421

Hierarchical Extraction of Iso-Surfaces with Semi-Regular Meshes Kai Hormann  

E-Print Network [OSTI]

Hierarchical Extraction of Iso-Surfaces with Semi-Regular Meshes Kai Hormann Ulf Labsik Martin and final result of our hierarchical iso-surface extraction algorithm. Abstract In this paper we present a novel approach to iso-surface extrac- tion which is based on a multiresolution volume data

Hormann, Kai

422

A Modeling Study of the Potential Water Quality Impacts from In-Stream Tidal Energy Extraction  

SciTech Connect (OSTI)

To assess the effects of tidal energy extraction on water quality in a simplified estuarine system, which consists of a tidal bay connected to the coastal ocean through a narrow channel where energy is extracted using in-stream tidal turbines, a three-dimensional coastal ocean model with built-in tidal turbine and water quality modules was applied. The effects of tidal energy extraction on water quality were examined for two energy extraction scenarios as compared with the baseline condition. It was found, in general, that the environmental impacts associated with energy extraction depend highly on the amount of power extracted from the system. Model results indicate that, as a result of energy extraction from the channel, the competition between decreased flushing rates in the bay and increased vertical mixing in the channel directly affects water quality responses in the bay. The decreased flushing rates tend to cause a stronger but negative impact on water quality. On the other hand, the increase of vertical mixing could lead to higher bottom dissolved oxygen at times. As the first modeling effort directly aimed at examining the impacts of tidal energy extraction on estuarine water quality, this study demonstrates that numerical models can serve as a very useful tool for this purpose. However, more careful efforts are warranted to address system-specific environmental issues in real-world, complex estuarine systems.

Wang, Taiping; Yang, Zhaoqing; Copping, Andrea E.

2013-11-09T23:59:59.000Z

423

Integrated Design, Operation and Control of Batch Extractive Distillation with a Middle Vessel  

E-Print Network [OSTI]

into a number of product fractions in a single batch column whereas, in continuous distillation several columnsIntegrated Design, Operation and Control of Batch Extractive Distillation with a Middle Vessel E. K distillation for separating homogeneous minimum-boiling azeotropic mixtures, where the extractive agent

Skogestad, Sigurd

424

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

425

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

426

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

427

Optimisation of steam extraction of oil from maritime pine needles S.A. REZZOUG  

E-Print Network [OSTI]

1 Optimisation of steam extraction of oil from maritime pine needles S.A. REZZOUG University of La needles is generally extracted by steam distillation process at atmospheric pressure for more than one subjecting the substrate for a short time to steam varying from 1.5 to 5.5 bar (113 to 155 ツーC) for 4 to 20

Boyer, Edmond

428

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

429

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

430

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

431

Extracting cosmic microwave background polarisation from satellite astrophysical maps  

E-Print Network [OSTI]

We present the application of the Fast Independent Component Analysis ({\\ica}) technique for blind component separation to polarized astrophysical emission. We study how the Cosmic Microwave Background (CMB) polarized signal, consisting of $E$ and $B$ modes, can be extracted from maps affected by substantial contamination from diffuse Galactic foreground emission and instrumental noise. {We implement Monte Carlo chains varying the CMB and noise realizations in order to asses the average capabilities of the algorithm and their variance.} We perform the analysis of all sky maps simulated according to the {\\sc Planck} satellite capabilities, modelling the sky signal as a superposition of the CMB and of the existing simulated polarization templates of Galactic synchrotron. Our results indicate that the angular power spectrum of CMB $E$-mode can be recovered on all scales up to $\\ell\\simeq 1000$, corresponding to the fourth acoustic oscillation, while the $B$-mode power spectrum can be detected, up to its turnover at $\\ell\\simeq 100$, if the ratio of tensor to scalar contributions to the temperature quadrupole exceeds 30%. The power spectrum of the cross correlation between total intensity and polarization, $TE$, can be recovered up to $\\ell\\simeq 1200$, corresponding to the seventh $TE$ acoustic oscillation.

C. Baccigalupi; F. Perrotta; G. De Zotti; G. F. Smoot; C. Burigana; D. Maino; L. Bedini; E. Salerno

2004-07-12T23:59:59.000Z

432

Extracting cosmic microwave background polarization from satelliteastrophysical maps  

SciTech Connect (OSTI)

We present the application of the fast independent component analysis (FASTICA) technique for blind component separation to polarized astrophysical emission. We study how the cosmic microwave background (CMB) polarized signal, consisting of E and B modes, can be extracted from maps affected by substantial contamination from diffuse Galactic foreground emission and instrumental noise. We implement Monte Carlo chains varying the CMB and noise realizations in order to assess the average capabilities of the algorithm and their variance. We perform the analysis of all-sky maps simulated according to the Planck satellite capabilities, modeling the sky signal as a superposition of the CMB and of the existing simulated polarization templates of Galactic synchrotron. Our results indicate that the angular power spectrum of CMB E mode can be recovered on all scales up to lsimilar or equal to 1000, corresponding to the fourth acoustic oscillation, while the B-mode power spectrum can be detected, up to its turnover at lsimilar or equal to 100, if the ratio of tensor to scalar contributions to the temperature quadrupole exceeds 30 per cent. The power spectrum of the cross-correlation between total intensity and polarization, TE, can be recovered up to lsimilar or equal to 1200, corresponding to the seventh TE acoustic oscillation.

Baccigalpi, C.; Perrotta, F.; Zotti, G.D.; Smoot, G.F.; Burigana,C.; Maino, D.; Bedini, L.; Salerno, E.

2004-05-02T23:59:59.000Z

433

Energetics of Marine Turbine Arrays - Extraction, Dissipation and Diminution  

E-Print Network [OSTI]

A two-scale modelling approach is discussed to predict the performance and energetics of a large number (more than a few hundred) of marine turbines installed as a power farm in a general coastal environment. The kernel of this approach is that the outer (coastal-scale) model/simulation is to assess the reduction of flow passing through a given farm area as a function of the increase of head loss across the farm, whereas the inner (device-scale) model/simulation uses this function to account for the (otherwise unknown) effect of coastal dynamics for that farm site. Large-eddy simulations (LES) of periodic open channel flow (with a porous plate model representing turbines) are then presented as the device-scale part of such a two-scale model of large marine turbine arrays. Results demonstrate how the energetics of turbine arrays (i.e. extraction, dissipation and diminution of energy in the entire farm area) may change depending on the characteristics of the farm site, array configuration and operating conditio...

Nishino, Takafumi

2013-01-01T23:59:59.000Z

434

Generating Unstable Resonances for Extraction Schemes Based on Transverse Splitting  

E-Print Network [OSTI]

A few years ago, a novel multi-turn extraction scheme was proposed, based on particle trapping inside stable resonances. Numerical simulations and experimental tests have confirmed the feasibility of such a scheme for low order resonances. While the third-order resonance is generically unstable and those higher than fourth-order are generically stable, the fourth-order resonance can be either stable or unstable depending on the specifics of the system under consideration. By means of the Normal Form a general approach to control the stability of the fourth-order resonance has been derived. This approach is based on the control of the amplitude detuning and the general form for a lattice with an arbitrary number of sextupole and octupole families is derived in this paper. Numerical simulations have confirmed the analytical results and have shown that, when crossing the unstable fourth-order resonance, the region around the centre of the phase space is depleted and particles are trapped in only the four stable ...

Giovannozzi, M; Turchetti, G

2009-01-01T23:59:59.000Z

435

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

436

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

437

Preparation of bitumen and kerogen through microwave assisted extraction and digestion  

SciTech Connect (OSTI)

Microwave procedures are replacing Soxhlet and ultrasonic extractions in many applications and are also finding widespread use in acid digestion procedures. In microwave extractions solvent choice is not dictated by boiling point considerations, so the choice of solvent(s) can be made based on polarity. It is possible to operate at temperatures above the solvent boiling point and at increased pressures. As a result these extractions are characterized by high solvent efficiency, small sample size, low solvent volumes, and short extraction times. These characteristics are ideal for bitumen extractions. Similarly, in digestion procedures, a high recovery yield is obtained in a minimum time using smaller volumes of acids. We report a convenient procedure for preparation of both bitumen and kerogen from shale samples based on a study of the efficiency of a series of solvents of varying polarity for bitumen recovery and testing of acid composition and volumes at different microwave powers and digestion times.

Dickneider, T.A.; Martin, S. [Univ. of Scranton, PA (United States)

1996-12-31T23:59:59.000Z

438

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

439

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

440

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

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

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

442

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

443

Understanding extraction and beam transport in the ISIS H{sup -} Penning surface plasma ion source  

SciTech Connect (OSTI)

The ISIS H{sup -} Penning surface plasma source has been developed to produce beam currents up to 70 mA and pulse lengths up to 1.5 ms at 50 Hz. This paper details the investigation into beam extraction and beam transport in an attempt to understand the beam emittance and to try to improve the emittance. A scintillator profile measurement technique has been developed to assess the performance of different plasma electrode apertures, extraction electrode geometries, and postextraction acceleration configurations. This work shows that the present extraction, beam transport, and postacceleration system are suboptimal and further work is required to improve it.

Faircloth, D. C.; Letchford, A. P.; Gabor, C.; Whitehead, M. O.; Wood, T.; Jolly, S.; Pozimski, J.; Savage, P.; Woods, M. [STFC/RAL, Chilton, Didcot, Oxon OX11 0QX (United Kingdom); Imperial College, London SW7 2AZ (United Kingdom)

2008-02-15T23:59:59.000Z

444

Plasma meniscus and extraction electrode studies of the ISIS H{sup -} ion source  

SciTech Connect (OSTI)

In order to reduce the emittance and increase the transported beam current from the ISIS Penning-type H{sup -} ion source, improvements to the extraction system are required. This ion source is currently being commissioned on the front end test stand at the Rutherford Appleton Laboratory, which demands higher extraction energies, higher beam currents, and smaller emittances. To facilitate this, the present geometry requires optimization. This paper details the experimental and simulation studies performed of the plasma meniscus and the possible electrode geometry modifications needed to extract the highest quality beam.

Lawrie, S. R.; Faircloth, D. C.; Letchford, A. P.; Gabor, C. [ISIS Pulsed Spallation Neutron Source, Rutherford Appleton Laboratory, Oxfordshire OX11 0QX (United Kingdom); Pozimski, J. K. [ISIS Pulsed Spallation Neutron Source, Rutherford Appleton Laboratory, Oxfordshire OX11 0QX (United Kingdom); Department of Physics, Imperial College of Science and Technology, London SW7 2AZ (United Kingdom)

2010-02-15T23:59:59.000Z

445

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

446

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

447

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

448

Extraction of the Compton Form Factor H from DVCS Measurements in the Quark Sector  

SciTech Connect (OSTI)

Working at twist 2 accuracy and assuming the dominance of the Generalized Parton Distribution H we study the helicity-dependent and independent cross sections measured in Hall A, the beam spin asymmetries measured in Hall B at Jefferson Laboratory and beam charge, beam spin and target spin asymmetries measured by Hermes. We extract the real and imaginary parts of the Compton Form Factor H, the latter being obtained with a 20-50% uncertainty. We pay extra attention to the estimation of systematic errors on the extraction of H. We discuss our results and compare to other extractions as well as to the popular VGG model.

H. Moutarde

2011-10-01T23:59:59.000Z

449

Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation  

DOE Patents [OSTI]

Alcohol substantially free of water is prepared by continuously fermenting a fermentable biomass feedstock in a fermentation unit, thereby forming an aqueous fermentation liquor containing alcohol and microorganisms. Continuously extracting a portion of alcohol from said fermentation liquor with an organic solvent system containing an extractant for said alcohol, thereby forming an alcohol-organic solvent extract phase and an aqueous raffinate. Said alcohol is separated from said alcohol-organic solvent phase. A raffinate comprising microorganisms and unextracted alcohol is returned to the fermentation unit.

Tedder, Daniel W. (Marietta, GA)

1985-05-14T23:59:59.000Z

450

Apparatus and method for extraction of chemicals from aquifer remediation effluent water  

DOE Patents [OSTI]

An apparatus and method for extraction of chemicals from an aquifer remediation aqueous effluent are provided. The extraction method utilizes a critical fluid for separation and recovery of chemicals employed in remediating aquifers contaminated with hazardous organic substances, and is particularly suited for separation and recovery of organic contaminants and process chemicals used in surfactant-based remediation technologies. The extraction method separates and recovers high-value chemicals from the remediation effluent and minimizes the volume of generated hazardous waste. The recovered chemicals can be recycled to the remediation process or stored for later use.

McMurtrey, Ryan D. (Idaho Falls, ID); Ginosar, Daniel M. (Idaho Falls, ID); Moor, Kenneth S. (Idaho Falls, ID); Shook, G. Michael (Idaho Falls, ID); Moses, John M. (Dedham, MA); Barker, Donna L. (Idaho Falls, ID)

2002-01-01T23:59:59.000Z

451

Method and system for extraction of chemicals from aquifer remediation effluent water  

DOE Patents [OSTI]

A method and system for extraction of chemicals from an groundwater remediation aqueous effluent are provided. The extraction method utilizes a critical fluid for separation and recovery of chemicals employed in remediating groundwater contaminated with hazardous organic substances, and is particularly suited for separation and recovery of organic contaminants and process chemicals used in surfactant-based remediation technologies. The extraction method separates and recovers high-value chemicals from the remediation effluent and minimizes the volume of generated hazardous waste. The recovered chemicals can be recycled to the remediation process or stored for later use.

McMurtrey, Ryan D. (Idaho Falls, ID); Ginosar, Daniel M. (Idaho Falls, ID); Moor, Kenneth S. (Idaho Falls, ID); Shook, G. Michael (Idaho Falls, ID); Barker, Donna L. (Idaho Falls, ID)

2003-01-01T23:59:59.000Z

452

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

453

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

454

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. 2 figs.

Chaiko, D.J.

1995-03-07T23:59:59.000Z

455

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

456
457

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.

458

Travel-time distribution from a finite line contamination source to an extraction well with regional flow  

E-Print Network [OSTI]

to an extraction well with regional flow Hongbin Zhan a,*, Dongmin Sun b a Department of Geology and Geophyscis

Zhan, Hongbin

459

PLUTONIUM-238 RECOVERY FROM IRRADIATED NEPTUNIUM TARGETS USING SOLVENT EXTRACTION  

SciTech Connect (OSTI)

The United States Department of Energy proposes to re-establish a domestic capability for producing plutonium-238 (238Pu) to fuel radioisotope power systems primarily in support of future space missions. A conceptual design report is currently being prepared for a new 238Pu, and neptunium-237 (237Np) target fabrication and processing facility tentatively to be built at the Idaho National Laboratory (INL) in the USA. The facility would be capable of producing at least 5 kg of 238Pu-oxide powder per year. Production of 238Pu requires fabrication of 237Np targets with subsequent irradiation in the existing Advanced Test Reactor (ATR) located at the INL. The targets are 237Np oxide dispersed in a compact of powdered aluminum and clad with aluminum metal. The 238Pu product is separated and purified from the residual 237Np, aluminum matrix, and fission products. The unconverted 237Np is also a valuable starting material and is separated, purified and recycled to the target fabrication process. The proposed baseline method for separating and purifying 238Pu and unconverted 237Np post irradiation is by anion exchange (IX). Separation of Pu from Np by IX was chosen as the baseline method because of the method痴 proven ability to produce a quality Pu product and because it is amenable to the relatively small scale, batch type production methods used (small batches of ~200g 238Pu are processed at a time). Multiple IX cycles are required involving substantial volumes of nitric acid and other process solutions which must be cleaned and recycled or disposed of as waste. Acid recycle requires rather large evaporator systems, including one contained in a hot cell for remote operation. Finally, the organic based anion exchange resins are rapidly degraded due to the high a-dose and associated heat production from 238Pu decay, and must be regularly replaced (and disposed of as waste). In summary, IX is time consuming, cumbersome, and requires substantial tankage to accommodate the process. The primary purpose of the preliminary study discussed here is to develop an alternative process flowsheet using well-known solvent extraction (SX) techniques based on decades of experience with PUREX processing of nuclear materials. Ultimately, this initial study will be used to determine if an SX approach would offer any significant processing advantages relative to the currently proposed anion exchange process.

Scott Herbst; Terry Todd; Jack Law; Bruce Mincher; Steve Frank; John Swanson

2006-10-01T23:59:59.000Z

460

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

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

Novel Regenerated Solvent Extraction Processes for the Recovery of Carboxylic Acids or Ammonia from Aqueous Solutions Part I. Regeneration of Amine-Carboxylic Acid Extracts  

SciTech Connect (OSTI)

Two novel regenerated solvent extraction processes are examined. The first process has the potential to reduce the energy costs inherent in the recovery of low-volatility carboxylic acids from dilute aqueous solutions. The second process has the potential for reducing the energy costs required for separate recovery of ammonia and acid gases (e.g. CO{sub 2} and H{sub 2}S) from industrial sour waters. The recovery of carboxylic acids from dilute aqueous solution can be achieved by extraction with tertiary amines. An approach for regeneration and product recovery from such extracts is to back-extract the carboxylic acid with a water-soluble, volatile tertiary amine, such as trimethylamine. The resulting trimethylammonium carboxylate solution can be concentrated and thermally decomposed, yielding the product acid and the volatile amine for recycle. Experimental work was performed with lactic acid, succinic acid, and fumaric acid. Equilibrium data show near-stoichiometric recovery of the carboxylic acids from an organic solution of Alamine 336 into aqueous solutions of trimethylamine. For fumaric and succinic acids, partial evaporation of the aqueous back extract decomposes the carboxylate and yields the acid product in crystalline form. The decomposition of aqueous solutions of trimethylammonium lactates was not carried out to completion, due to the high water solubility of lactic acid and the tendency of the acid to self-associate. The separate recovery of ammonia and acid gases from sour waters can be achieved by combining steam-stripping of the acid gases with simultaneous removal of ammonia by extraction with a liquid cation exchanger. The use of di-2,4,4-trimethylpentyl phosphinic acid as the liquid cation exchanger is explored in this work. Batch extraction experiments were carried out to measure the equilibrium distribution ratio of ammonia between an aqueous buffer solution and an organic solution of the phosphinic acid (0.2N) in Norpar 12. The concentration-based distribution ratios increase from 0.11 to 0.46 as the aqueous phase pH increases from 7.18 to 8.15. Regeneration of the organic extractant solution was carried out by stripping at elevated temperatures to remove the ammonia, with 99% recovery of the ammonia being obtained at 125 C.

Poole, L.J.; King, C.J.

1990-03-01T23:59:59.000Z

462

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

463

Proc. ICASSP2003, Volume II, pages 205-208 205 CO-CHANNEL SPEAKER IDENTIFICATION USING USABLE SPEECH EXTRACTION  

E-Print Network [OSTI]

aiming to extract one of the speakers from co-channel speech by enhancing target speech or suppressing and quality of extracted speech are not as important as in traditional co-channel speech enhancement systems SPEECH EXTRACTION BASED ON MULTI-PITCH TRACKING Yang Shao and DeLiang Wang Department of Computer

Wang, DeLiang "Leon"

464

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

465

Distribution of water extractable heavy metals (Cd, Co, Mn and Mo) in the topsoil of Osijek-Baranja County (Eastern Croatia)  

E-Print Network [OSTI]

of soil pH, DOC and water extractable heavy metals, for soilthe area regarding the water extractable heavy metals and toand discussion Water extraction of four heavy metals (Cd,

Ivezic, Vladimir; Alm蚶, ナsgeir R.; Loncaric, Zdenko; Singh, Bal Ram

2009-01-01T23:59:59.000Z

466

New Opportunities for Metals Extraction and Waste Treatment by Electrochemical Processing in Molten Salts  

E-Print Network [OSTI]

Molten salt electrolysis is a proven technology for the extraction of metals -- all the world's primary aluminum is produced in this manner. The unique properties of molten salts also make them

Sadoway, Donald R.

2001-01-01T23:59:59.000Z

467

Use of solvent extraction technique in Brazilian uranium mills - an overview  

SciTech Connect (OSTI)

Solvent extraction has been applied to uranium-concentrate production in Brazil. At the first plant, uranium minerals associated with Zr and Mo were acid leached. Extraction was carried out by a mixture of Alamine 336 and Alamine 304, followed by selective Zr, U, and Mo stripping. At the currently operating facilities, a single U mineral is processed by acid heap leaching. Uranium is extracted with Alamine 336 and stripped with NaCl solution. As all water is recycled, chloride contents in the liquor have increased, causing detrimental effects to the extraction process. The current plant operating conditions and the improvements arisen from the research developed to solve these problems are presented. (authors)

Gomiero, Luiz A. [Industrias Nucleares do Brasil S/A-INB, Unidade de Caetite, P.0. Box 7, 46400-000, Caetite, BA (Brazil); Morais, Carlos A. [Centro de Desenvolvimento da Tecnologia Nuclear CDTN/CNEN, Rua Mario Werneck, s/n, Campus da UFMG, Pampulha, 30123-970, Belo Horizonte, MG (Brazil)

2008-07-01T23:59:59.000Z

468

E-Print Network 3.0 - automated solid-phase extraction Sample...  

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

2 3 4 5 > >> Page: << < 1 2 3 4 5 > >> 21 J Forensic Sci, May 2005, Vol. 50, No. 3 Paper ID JFS2004181 Summary: involved. Current methods of robotic DNA extractions utilize...

469

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

470

E-Print Network 3.0 - apple extract attenuates Sample Search...  

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

Search Sample search results for: apple extract attenuates Page: << < 1 2 3 4 5 > >> 1 Q. J. R. Meteoml. SOC.(1998), 124, pp. 2393-2415 Correction for attenuation of radar...

471

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

472

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

473

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

474

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

475

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

476

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

477

E-Print Network 3.0 - aqueous two-phase extraction Sample Search...  

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

. Furfural is extracted into the organic phase from the aqueous xylose phase as it is produced by acid... only be used with the addition of salt to form a two phase system. We...

478

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

479

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

E-Print Network [OSTI]

"Black Splendor" (BS) on tumor breast cells in vitro and in vivo, to elucidate the molecular mechanisms behind the cancer growth-suppression of the phenolics identified in peach and plum extracts for their chemopreventive potential and to evaluate...

Noratto Dongo, Giuliana Doris

2009-05-15T23:59:59.000Z

480

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

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

Fixing and pelleting chromatin/nuclei from extracts onto coverslips for immunofluorescence  

E-Print Network [OSTI]

Fixing and pelleting chromatin/nuclei from extracts onto coverslips for immunofluorescence Arshad. poly-lysine coated coverslips. 4. spin down tubes (or equivalent method to pellet onto coverslips; our

Mitchison, Tim

482

Environmental and Economical Evaluation of Integrating NGL Extraction and LNG Liquefaction Technology in Iran LNG Project  

E-Print Network [OSTI]

Environmental and Economical Evaluation of Integrating NGL Extraction and LNG Liquefaction Technology in Iran LNG Project Mohammad Hasan Khoshgoftar Manesh, Vahid Mazhari Iran Power Projects Management Company The combination of changing...

Manesh, M. H. K.; Mazhari, V.

483

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...

484

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...

485

Strength, transport efficiency and selectivity of novel extractants for the recovery of base metals  

E-Print Network [OSTI]

This thesis concerns the development of new types of solvent extractants for use in the hydrometallurgical recovery of base metals, and addresses the ligand design features which are needed to control the strength, ...

Lin, Tai

2009-01-01T23:59:59.000Z

486

Transport of metal salts by zwitterionic ligands; simple but highly efficient salicylaldoxime extractants  

E-Print Network [OSTI]

Attaching dialkylaminomethyl arms to commercial phenolic oxime copper extractants yields reagents which transport base metal salts very efficiently by forming neutral 1 : 1 or 1 : 2 complexes with zwitterionic forms of the ligands....

Parsons, S.; Tasker, Peter; White, Fraser J; Henderson, D.K.; Galbraith, S.G.; Davidson, J.E.; Forgan, Ross Stewart

2008-09-01T23:59:59.000Z

487

alkaline-side solvent extraction: Topics by E-print Network  

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

than the actual one. Yoram Burak; David Andelman 2000-04-06 210 A study of solvent refining of cottonseed oil by use of a rotating core countercurrent extraction column Texas...

488

E-Print Network 3.0 - all-optical clock extraction Sample Search...  

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

Search Powered by Explorit Topic List Advanced Search Sample search results for: all-optical clock extraction Page: << < 1 2 3 4 5 > >> 1 40 GHz all-optical clock recovery using...

489

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...

490

Detergent selection for enhanced extraction of membrane proteins Buenafe T. Arachea 1  

E-Print Network [OSTI]

: Membrane proteins Extraction efficiency Detergents Surfactants Mass spectrometry a b s t r a c t Generating. Introduction Membrane proteins are the last major frontier for protein struc- tural investigation

Viola, Ronald

491

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

492

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

493

Source fabrication and lifetime for Li+ ion beams extracted from alumino-silicate sources  

E-Print Network [OSTI]

of amount of lithium alumino-silicate mass deposition on Themg, and 2.8 mg of alumino- silicate material deposited. [19]extracted from alumino-silicate sources Prabir K. Roy, ?

Roy, Prabir

2013-01-01T23:59:59.000Z

494

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

495

Reducing the Environmental Impact of Bitumen Extraction with ES-SAGD Process  

E-Print Network [OSTI]

Steam Assisted Gravity Drainage (SAGD) is a proven enhanced oil recovery technique for oil sand extraction. However, the environmental and economic challenges associated with excessive greenhouse gas emissions due to the combustion of significant...

Mukhametshina, Albina

2013-11-08T23:59:59.000Z

496

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

497

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

498

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

499

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

500

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