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1

The synthesis of Nano-nano dual phase  

E-Print Network (OSTI)

The synthesis of Nano-nano dual phase ceramic composites Tomas Raming #12;Raming, Tomas Peter The synthesis of nano-nano dual phase ceramic composites Thesis University of Twente, Enschede-With ref of Scientific Research (NWO), group of Chemical Sciences (CW) #12;THE SYNTHESIS OF NANO-NANO DUAL PHASE CERAMIC

Verweij, Henk

2

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

Science Conference Proceedings (OSTI)

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

Wu, R; Felton, J

2007-10-12T23:59:59.000Z

3

DUAL PHASE MEMBRANE FOR HIGH TEMPERATURE CO2 SEPARATION  

SciTech Connect

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

4

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

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

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

5

Dual Phase Membrane for High Temperature CO2 Separation  

SciTech Connect

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

6

Dual Phase Membrane for High Temperature CO2 Separation  

SciTech Connect

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

7

Dual-phase membrane for High temperature CO2 separation  

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

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

8

A Phase Field Study on Static Strain Aging Kinetics of Dual Phase ...  

Science Conference Proceedings (OSTI)

In the current study, we found that the time scale for strain aging of a dual-phase linepipe steel is several orders of magnitude longer than that needed for...

9

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

10

Fatigue resistance and microstructure of experimental dual phase Fe/2Si/0. 1C steel  

Science Conference Proceedings (OSTI)

The fatigue behavior of an experimental dual phase Fe/2Si/0.1C steel has been examined as a function of constituent morphology with the objective of developing ferritic-martensitic microstructures with optimum strength and fatigue crack propagation resistance. Microstructure containing fine globular or coarse martensite within a coarse-grained ferritic matrix were found to show the highest fatigue threshold stress intensity range ..delta..K/sub o/ values reported to date (to our knowledge) and certainly the highest combination of strength and ..delta..K/sub o/ for steels (..delta..K/sub o/ values above 19 MPa..sqrt..m with yield strengths in excess of 600 MPa). Such unusually high crack growth resistance is attributed primarily to a meandering crack path morphology which promotes slower crack extension rates from crack deflection and roughness-induced crack closure mechanisms.

Dutta, V.B.; Suresh, S.; Thomas, G.; Ritchie, R.O.

1983-09-01T23:59:59.000Z

11

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

12

Fabrication and Characterization of Dual Phase Magnesia-Zirconia Ceramics Doped with Plutonia  

Science Conference Proceedings (OSTI)

Dual phase magnesia-zirconia ceramics doped with plutonia are being studied as an inert matrix fuel (IMF) for light water reactors. The motivation of this work is to develop an IMF with a thermal conductivity superior to that of the fuels based on yttria stabilized zirconia. The concept uses the MgO phase as an efficient heat conductor to increase thermal conductivity of the composite. In this paper ceramic fabrication and characterization by scanning electron microscopy, energy and wavelength dispersive xray spectroscopy is discussed. Characterization shows that the ceramics consist of the two-phase matrix and PuO2-rich inclusions. The matrix is comprised of pure MgO phase and MgO-ZrO2-PuO2 solid solution. The PuO2-rich inclusion contained dissolved MgO and ZrO2.

P. G. Medvedev; J. F. Jue; S. M. Frank; M.K. Meyer

2005-05-01T23:59:59.000Z

13

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

Science Conference Proceedings (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

14

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

E-Print Network (OSTI)

Dual phase magnesia-zirconia ceramics were developed, characterized, and evaluated as a potential matrix material for use in light water reactor inert matrix fuel intended for the disposition of plutonium and minor actinides. Ceramics were 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 analysis. The final product was found to consist of two phases: cubic zirconia-based solid solution and cubic magnesia. Evaluation of key feasibility issues was limited to investigation of long-term stability in hydrothermal conditions and assessment of the thermal conductivity. With respect to hydrothermal stability, it was determined that limited degradation of these ceramics at 300^oC occurred due to the hydration of the magnesia phase. Normalized mass loss rate, used as a quantitative indicator of degradation, was found to decrease exponentially with the zirconia content in the ceramics. The normalized mass loss rates measured in static 300^oC de-ionized water for the magnesia-zirconia ceramics containing 40, 50, 60, and 70 weight percent of zirconia are 0.00688, 0.00256, 0.000595, 0.000131 g/cm2/hr respectively. Presence of boron in the water had a dramatic positive effect on the hydration resistance. At 300^oC the normalized mass loss rates for the composition containing 50 weight percent of zirconia was 0.00005667 g/cm2/hr in the 13000 ppm aqueous solution of the boric acid. With respect to thermal conductivity, the final product exhibits values of 5.5-9.5 W/(m deg) at 500^oC, and 4-6 W/(m deg) at 1200^oC depending on the composition. This claim is based on the assessment of thermal conductivity derived from thermal diffusivity measured by laser flash method in the temperature range from 200 to 1200^oC, measured density, and heat capacity calculated using rule of mixtures. Analytical estimates of the anticipated maximum temperature during normal reactor operation in a hypothetical inert matrix fuel rod based on the magnesia-zirconia ceramics yielded the values well below the melting temperature and well below current maximum temperatures authorized in light water reactors.

Medvedev, Pavel

2004-12-01T23:59:59.000Z

15

Hamilton-Jacobi and quantum theory formulations of thermal-wave propagation under the dual-phase lagging model of heat conduction  

SciTech Connect

Dual-phase lagging model is one of the most promising approaches to generalize the Fourier heat conduction equation, and it can be reduced in the appropriate limits to the hyperbolic Cattaneo-Vernotte and to the parabolic equations. In this paper it is shown that the Hamilton-Jacobi and quantum theory formulations that have been developed to study the thermal-wave propagation in the Fourier framework can be extended to include the more general approach based on dual-phase lagging. It is shown that the problem of solving the heat conduction equation can be treated as a thermal harmonic oscillator. In the classical approach a formulation in canonical variables is presented. This formalism is used to introduce a quantum mechanical approach from which the expectation values of observables such as the temperature and heat flux are obtained. These formalisms permit to use a methodology that could provide a deeper insight into the phenomena of heat transport at different time scales in media with inhomogeneous thermophysical properties.

Ordonez-Miranda, J.; Alvarado-Gil, J. J. [Department of Applied Physics, Cinvestav-Unidad Merida, Carretera Antigua a Progreso km. 6, A.P. Postal 73 'Cordemex', Merida, Yucatan 97310 (Mexico); Zambrano-Arjona, Miguel A. [Facultad de Ingenieria, Universidad Autonoma de Yucatan, A.P. 150 Cordemex, Merida, Yucatan 97310 (Mexico)

2010-02-15T23:59:59.000Z

16

bearing Dual Phase High Strength Sheet  

Science Conference Proceedings (OSTI)

Abstract Scope, Micro-alloying elements such as Nb and Ti play critical roles in ... Forming Austenitic Stainless Steels for Structural Materials of Nuclear Power.

17

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

18

Extraction Report  

Science Conference Proceedings (OSTI)

Page 1. Extraction Report Apple iPhone (Physical) Summary Connection Type Cable No. 110 Extraction start date/time 10/23/2012 3:21:58 PM ...

2012-10-23T23:59:59.000Z

19

DNA Extraction  

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

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

20

Information Extraction  

Science Conference Proceedings (OSTI)

The automatic extraction of information from unstructured sources has opened up new avenues for querying, organizing, and analyzing data by drawing upon the clean semantics of structured databases and the abundance of unstructured data. The field of ...

Sunita Sarawagi

2008-03-01T23:59:59.000Z

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


21

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

22

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

23

Erosion in dual-phase microstructures: Final report  

SciTech Connect

This project was designed to provide a systematic investigation of the effects of microstructural variables on particle impact erosion of two-phase metallic alloys containing large second-phase particles (SPPs). Commercial alloys that contain large hard carbides, such as high Cr-Mo white cast irons and Stellite alloys are known to be highly abrasion resistant. Since there are many similaries between abrasion and erosion, it was felt that a systematic examination of the erosion behavior of such alloys would be useful, especially since existing literature on the subject seemed to indicate that they offered little advantage in erosion. Work was divided into two major sections, on erosion of commercial alloys and of model alloys having artificial SPPs like Al/sub 2/O/sub 3/ dispersed in a Cu matrix. The model alloys allowed control of SPP size and second-phase volume fraction (SPVF), and permitted experiments comparing the erosion rates of the dispersed alloys with those of the pure phases. Under the wide range of erosion conditions investigated, this type of alloy offered no significant improvement of erosion resistance over simple, inexpensive low-carbon steels. This was concluded to be the result of the phenomenon of edge spalling from the edges of the SPPs, which was investigated in some detail. 18 refs., 29 figs., 4 tabs.

Kosel, T.H.

1987-12-07T23:59:59.000Z

24

Dual-phase membrane for High temperature CO2 separation  

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

2 CO 2 High temp. membrane for CO 2 removal High Temperature CO 2 Selective Membranes Syngas gas CO 2 enriched gas CO 2 High pressure H 2 0 100 200 300 400 500 600 700 1 10 100...

25

Development of Microalloyed High Strength Dual Phase Steels  

Science Conference Proceedings (OSTI)

Analysis of Residence Time Distribution (RTD) of Fluid Flows in a Four Strand Delta-shaped Tundish Operating Under Isothermal and Non-isothermal...

26

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

27

METAL EXTRACTION PROCESS  

DOE Patents (OSTI)

An improved method for extracting uranium from aqueous solutions by solvent extraction is presented. A difficulty encountered in solvent extraction operations using an organic extractant (e.g., tributyl phosphate dissolved in kerosene or carbon tetrachloride) is that emulsions sometimes form, and phase separation is difficult or impossible. This difficulty is overcome by dissolving the organic extractant in a molten wax which is a solid at operating temperatures. After cooling, the wax which now contains the extractant, is broken into small particles (preferably flakes) and this wax complex'' is used to contact the uranium bearing solutions and extract the metal therefrom. Microcrystalline petroleum wax and certain ethylene polymers have been found suitable for this purpose.

Lewis, G.W. Jr.; Rhodes, D.E.

1957-11-01T23:59:59.000Z

28

TRITIUM EXTRACTION FACILITY ALARA  

SciTech Connect

The primary mission of the Tritium Extraction Facility (TEF) is to extract tritium from tritium producing burnable absorber rods (TPBARs) that have been irradiated in a commercial light water reactor and to deliver tritium-containing gas to the Savannah River Site Facility 233-H. The tritium extraction segment provides the capability to deliver three (3) kilograms per year to the nation's nuclear weapons stockpile. The TEF includes processes, equipment and facilities capable of production-scale extraction of tritium while minimizing personnel radiation exposure, environmental releases, and waste generation.

Joye, BROTHERTON

2005-04-19T23:59:59.000Z

29

Supercritical Fluid Extraction  

E-Print Network (OSTI)

In supercritical fluid extraction, many options are available for achieving and controlling the desired selectivity, which is extremely sensitive to variations in pressure, temperature, and choice of solvent. The ability of supercritical fluids to vaporize relatively nonvolatile compounds at moderate temperatures can reduce the energy requirements compared to distillation and liquid extraction.

Johnston, K. P.; Flarsheim, W. M.

1984-01-01T23:59:59.000Z

30

Extraction of nitrosoruthenium tributylphosphate  

SciTech Connect

Ruthenium is one of a number of elements that complicates the regeneration of processed nuclear fuel from atomic power stations. Because of its chemical properties, it often acompanies various elements in the extraction process and thus complicates the purification of uranium. In this paper, we decided to investigate the extraction chemistry of nitrosoruthenium trinitrate in order to establish the solvate number and the establish the conditions under which this compound transfers into weakly extracted forms. This is important in controlling and improving the process of purifying uranium from ruthenium.

Rozen, A.M.; Volk, V.I.; Zahkarkin, B.S. [and others

1995-11-01T23:59:59.000Z

31

Dekker PMIS Extraction Utility  

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

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

32

NLC Pulsed Extraction  

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

which transports 250 GeV beams from the main linac to the parallel bypass line. The design is, at least in principle, compatible with extraction of 60 bunch trains per second...

33

Dekker PMIS Extraction Utility  

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

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

34

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

35

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

36

Prebaked Anode from Coal Extract  

Science Conference Proceedings (OSTI)

We previously reported that the coal extract prepared from non-hydrogenative extraction of thermal coals using two-ring-aromatic solvent (Hyper-coal) is suitable...

37

PARS II Extraction Utility | Department of Energy  

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

Extraction Utility PARS II Extraction Utility PARS II Extraction Utility v8020130510.zip More Documents & Publications PARS II Extraction Utility Release Notes PARS II CPP...

38

Extracting the Eliashberg Function  

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

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

39

Le Bail Intensity Extraction  

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

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

40

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

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

Extracting the Eliashberg Function  

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

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

42

Extraction Utility Design Specification  

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

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

43

URANIUM EXTRACTION PROCESS  

DOE Patents (OSTI)

A process is described for recovering uranium values from acidic aqueous solutions containing hexavalent uranium by contacting the solution with an organic solution comprised of a substantially water-immiscible organlc diluent and an organic phosphate to extract the uranlum values into the organic phase. Carbon tetrachloride and a petroleum hydrocarbon fraction, such as kerosene, are sultable diluents to be used in combination with organlc phosphates such as dibutyl butylphosphonate, trlbutyl phosphine oxide, and tributyl phosphate.

Baldwin, W.H.; Higgins, C.E.

1958-12-16T23:59:59.000Z

44

Fission product solvent extraction  

SciTech Connect

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

45

Extracting the fundamental parameters  

E-Print Network (OSTI)

If supersymmetry is discovered at the LHC, the extraction of the fundamental parameters will be a formidable task. In such a system where measurements depend on different combinations of the parameters in a highly correlated system, the identification of the true parameter set in an efficient way necessitates the development and use of sophisticated methods. A rigorous treatment of experimental and theoretical errors is necessary to determine the precision of the measurement of the fundamental parameters. The techniques developed for this endeavor can also be applied to similar problems such as the determination of the Higgs boson couplings at the LHC.

Dirk Zerwas

2009-09-30T23:59:59.000Z

46

Extraction Utility Design Specification  

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

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

47

INFORMATION EXTRACTION AND SPEECH RECOGNITION  

Science Conference Proceedings (OSTI)

... Named Entity 1 In addition, the parallel MET evaluation is per- forming multilingual named entity extraction for Japanese, Chinese, and Thai. ...

2011-08-22T23:59:59.000Z

48

INFORMATION EXTRACTION AND SPEECH RECOGNITION  

Science Conference Proceedings (OSTI)

... Named Entity 1 In addition, the parallel MET evaluation is pe rforming multilingual named entity extraction -- forJapanese, Chinese, and Thai. ...

2011-08-22T23:59:59.000Z

49

Extraction chromatography: Progress and opportunities  

SciTech Connect

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

50

Extracting alcohols from aqueous solutions  

DOE Patents (OSTI)

Hydrocarbon and surfactants are contacted with a solution of alcohol and water to extract the alcohol into the hydrocarbon-surfactant mixture.

Compere, Alicia L. (Knoxville, TN); Googin, John M. (Oak Ridge, TN); Griffith, William L. (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

51

Pre-combustion Carbon Dioxide Capture by a New Dual-Phase Ceramic...  

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

15236-0940 412-386-4467 arun.bose@netl.doe.gov Jerry Y.S. Lin Principal Investigator Arizona State University Tempe, AZ 85287 480-965-7769 Jerry.Lin@asu.edu Period of PerformanCe...

52

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

E-Print Network (OSTI)

Dr. M. Raghavan of the Exxon Research Laboratories performedCourtesy, Dr. M. Raghavan, Exxon, N. J. appearance of new

Neill, Thomas John O'

2011-01-01T23:59:59.000Z

53

Polarity Induced Growth of Dual-Phase ZnS Tetrapod Heterostructures  

Science Conference Proceedings (OSTI)

Design of Pre-Weakening and Evaluation of Structural Safety for Explosive ... Crystallization Temperature of Pd-Cu-Si System Using Integrated Thin Film Samples ... Mechanical Properties of 5083 Aluminium Welds after Manual and Automatic...

54

E26: Quantitative Analysis of the Voids in Dual Phase Steel Sheets ...  

Science Conference Proceedings (OSTI)

D11: Binary and Ternary Phase Diagram Studies of Thermal Energy Storage Materials ... for Use in 3-state and Non-volatile Memory FETs on Si and InGaAs substrates ... E9: Low-temperature Spin Spray Deposited Ferrite/Piezoelectric Thin Film .... of Core-shell Structured Multiferroic Nanocomposites for Energy Harvesting.

55

SOLVENT EXTRACTION PROCESS FOR PLUTONIUM  

DOE Patents (OSTI)

The separation of plutonium from aqueous inorganic acid solutions by the use of a water immiscible organic extractant liquid is described. The plutonium must be in the oxidized state, and the solvents covered by the patent include nitromethane, nitroethane, nitropropane, and nitrobenzene. The use of a salting out agents such as ammonium nitrate in the case of an aqueous nitric acid solution is advantageous. After contacting the aqueous solution with the organic extractant, the resulting extract and raffinate phases are separated. The plutonium may be recovered by any suitable method.

Seaborg, G.T.

1959-04-14T23:59:59.000Z

56

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 the two liquid phases, separation will result. This is the principle upon which separation by liquid-liquid extraction is based, and there are a number of important applications of this concept in industrial processes. This paper will review the basic concepts and applications as well as present future directions for the liquid-liquid extraction process.

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

1983-01-01T23:59:59.000Z

57

Extractive Metallurgy of Rare Earths  

Science Conference Proceedings (OSTI)

Jan 24, 2006 ... The extractive metallurgy of the rare-earth elements has several features that make it uniquea variety of both input ores and final products,...

58

Production and Handling Slide 11: Solvent Extraction  

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

Extraction Skip Presentation Navigation First Slide Previous Slide Next Slide Last Presentation Table of Contents Solvent Extraction Refer to caption below for image description...

59

PARS II Extraction Utility | Department of Energy  

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

PARS II Extraction Utility DEC1387487110111DekkerPMISExtractionUtilityv8020101217.zip More Documents & Publications Dekker PMIS Extraction Utility Release Notes for the PARS...

60

Extractant composition including crown ether and calixarene extractants  

SciTech Connect

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

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

PREPARATION OF ALKYL PYROPHOSPHATE EXTRACTANTS  

DOE Patents (OSTI)

A process for providing superior solvent extractants for metal recovery processes is given wherein the extractant comprises an alkyl pyrophosphoric acid ester dissolved in an organic solvent diluent. Finely divided solid P/sub 2/O/ sub 5/ is slurried in an organic solvent-diluent selected from organic solvents such as kerosene, benzene, chlorobenzene, toluene, etc. An alcohol selected from the higher alcohols having 4 to 17 carbon atoms. e.g.. hexanol-1. heptanol-3, octanol-1. 2.6-dimethyl-heptanol-4, and decanol-1, is rapidly added to the P/sub 2/O/sub 5/ slurry in the amount of about 2 moles of alcohol to 1 mole of P/sub 2/ O/sub 5/. The temperature is maintained below about 110 deg C during the course of the P/sub 2/O/sub 5/-alcohol reaction. An alkyl pyrophosphate extractant compound is formed as a consequence of the reaction process. The alkyl pyrophosphate solvent-diluent extractant phase is useful in solvent extraction metal recovery processes.

Levine, C.A.; Skiens, W.E.; Moore, G.R.

1960-08-01T23:59:59.000Z

62

ChronoSeeker: Future Opinion Extraction  

Science Conference Proceedings (OSTI)

In this paper, we will propose a novel technique for Future Opinion Extraction, a new task of Information Extraction. The system we built can extract automatically future opinions, building automatic queries for the Search API. We obtained an F-Measure ... Keywords: Data Mining, Information Extraction, Machine Learning

Pierre Brun; Hideki Kawai; Kazuo Kunieda; Keiji Yamada

2009-09-01T23:59:59.000Z

63

Clustering techniques for open relation extraction  

Science Conference Proceedings (OSTI)

This work investigates clustering techniques for Relation Extraction (RE). Relation Extraction is the task of extracting relationships among named entities (e.g., people, organizations and geo-political entities) from natural language text. We are particularly ... Keywords: relation extraction, text clustering

Filipe Mesquita

2012-05-01T23:59:59.000Z

64

Interactive out-of-core isosurface extraction  

Science Conference Proceedings (OSTI)

Keywords: interval tree, isosurface extraction, marching cubes, out-of-core computation, scientific visualization

Yi-Jen Chiang; Cludio T. Silva; William J. Schroeder

1998-10-01T23:59:59.000Z

65

Extracting work from quantum systems  

E-Print Network (OSTI)

We consider the task of extracting work from quantum systems in the resource theory perspective of thermodynamics, where free states are arbitrary thermal states, and allowed operations are energy conserving unitary transformations. Taking as our work storage system a 'weight' we prove the second law and then present simple protocols which extract average work equal to the free energy change of the system - the same amount as in classical thermodynamics. Crucially, for systems in 'classical' states (mixtures of energy eigenstates) our protocol works on a single copy of the system. This is in sharp contrast to previous results, which showed that in case of almost-deterministic work extraction, collective actions on multiple copies are necessary to extract the free energy. This establishes the fact that free energy is a meaningful notion even for individual systems in classical states. However, for non-classical states, where coherences between energy levels exist, we prove that collective actions are necessary, so long as no external sources of coherence are used.

Paul Skrzypczyk; Anthony J. Short; Sandu Popescu

2013-02-12T23:59:59.000Z

66

Building Extraction Using Lidar Data  

E-Print Network (OSTI)

Accurate 3D surface models in urban areas are essential for a variety of applications, such as visualization, GIS, and mobile communications. Since manual surface reconstruction is very costly and time consuming, the development of automated algorithms is of great importance. On the other hand LIDAR data is a relatively new technology for obtaining Digital Surface Models (DSM) of the earths surface. It is a fast method for sampling the earths surface with a high density and high point accuracy. In this paper a new approach for building extraction from LIDAR data is presented. The approach utilizes the geometric properties of urban buildings for the reconstruction of the building wire-frames from the LIDAR data. We start by finding the candidate building points that are used to populate a plane parameter space. After filling the plane parameter space, we find the planes that can represent the building roof surfaces. Roof regions are then extracted and the plane parameters are refined using a robust estimation technique and the geometric constraint between adjacent roof facets. The region boundaries are extracted and used to form the building wire-frames. The algorithm is tested on two buildings from a locally acquired LIDAR data sets. The test results show some success in extracting urban area buildings. 1.

Ahmed F. Elaksher; James S. Bethel

2002-01-01T23:59:59.000Z

67

Robust adaptive subspace extraction for DOA tracking  

Science Conference Proceedings (OSTI)

This paper addresses the problem of extracting a time-varying signal subspace from noisy signal measurements for direction-of-arrival (DOA) estimation and tracking. A robust adaptive method for extracting the signal subspace is developed based on robust ...

Dekun Yang; S. J. Flockton

1996-05-01T23:59:59.000Z

68

Open language learning for information extraction  

Science Conference Proceedings (OSTI)

Open Information Extraction (IE) systems extract relational tuples from text, without requiring a pre-specified vocabulary, by identifying relation phrases and associated arguments in arbitrary sentences. However, state-of-the-art Open IE systems such ...

Mausam; Michael Schmitz; Robert Bart; Stephen Soderland; Oren Etzioni

2012-07-01T23:59:59.000Z

69

Ontology based information extraction from text  

Science Conference Proceedings (OSTI)

Information extraction systems employ ontologies as a means to describe formally the domain knowledge exploited by these systems for their operation. The aim of this survey is to study the contribution of ontologies to information extraction systems. ...

Vangelis Karkaletsis; Pavlina Fragkou; Georgios Petasis; Elias Iosif

2011-01-01T23:59:59.000Z

70

Production and extraction of sugars from switchgrass ...  

the water consumption requirements of more traditional IL pretreatment approaches. Results and discussion Alkali extraction using sugar standards

71

Available Technologies: Sugar Extraction and Ionic Liquid ...  

APPLICATIONS OF TECHNOLOGY: Biomass pretreatment for biofuel production; Recovery of products using biphasic liquid-liquid extraction; Recovery and ...

72

Rapid automatic keyword extraction for information retrieval ...  

Methods and systems for rapid automatic keyword extraction for information retrieval and analysis. Embodiments can include parsing words in an ...

73

Joint unsupervised structure discovery and information extraction  

Science Conference Proceedings (OSTI)

In this paper we present JUDIE (Joint Unsupervised Structure Discovery and Information Extraction), a new method for automatically extracting semi-structured data records in the form of continuous text (e.g., bibliographic citations, postal addresses, ... Keywords: data management, information extraction, text segmentation

Eli Cortez; Daniel Oliveira; Altigran S. da Silva; Edleno S. de Moura; Alberto H.F. Laender

2011-06-01T23:59:59.000Z

74

Extracting information networks from the blogosphere  

Science Conference Proceedings (OSTI)

We study the problem of automatically extracting information networks formed by recognizable entities as well as relations among them from social media sites. Our approach consists of using state-of-the-art natural language processing tools to identify ... Keywords: clustering, domain frequency, named entities, open information extraction, relation extraction

Yuval Merhav; Filipe Mesquita; Denilson Barbosa; Wai Gen Yee; Ophir Frieder

2012-09-01T23:59:59.000Z

75

Personalized Web Services for Web Information Extraction  

E-Print Network (OSTI)

The field of information extraction from the Web emerged with the growth of the Web and the multiplication of online data sources. This paper is an analysis of information extraction methods. It presents a service oriented approach for web information extraction considering both web data management and extraction services. Then we propose an SOA based architecture to enhance flexibility and on-the-fly modification of web extraction services. An implementation of the proposed architecture is proposed on the middleware level of Java Enterprise Edition (JEE) servers.

Jarir, Zahi; Erradi, Mahammed

2011-01-01T23:59:59.000Z

76

Optimization of oil extraction procedures from animal tissue.  

E-Print Network (OSTI)

??Oil was extracted from chicken and pork fat discards by microwave assisted extraction and soxhlet extraction for comparison. Protease enzyme and pulsed electric field were (more)

Amusan, Anuoluwapo

2009-01-01T23:59:59.000Z

77

The Effect of Ultrasonificated Extracts of Spirulina maxima on the ...  

Science Conference Proceedings (OSTI)

Apr 20, 2010 ... Yields from conventional water and ethanol extraction were 15.8% ... ods like hot water or ethanol extraction processes cannot maintain extract...

78

Preparation Of Dna-Containing Extract For Pcr Amplification  

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

Preparation Of Dna-Containing Extract For Pcr Amplification Preparation Of Dna-Containing Extract For Pcr Amplification The method may provide a DNA-containing extract sufficiently...

79

Liquid-Liquid Extraction Equipment  

Science Conference Proceedings (OSTI)

Solvent extraction processing has demonstrated the ability to achieve high decontamination factors for uranium and plutonium while operating at high throughputs. Historical application of solvent extraction contacting equipment implies that for the HA cycle (primary separation of uranium and plutonium from fission products) the equipment of choice is pulse columns. This is likely due to relatively short residence times (as compared to mixer-settlers) and the ability of the columns to tolerate solids in the feed. Savannah River successfully operated the F-Canyon with centrifugal contactors in the HA cycle (which have shorter residence times than columns). All three contactors have been successfully deployed in uranium and plutonium purification cycles. Over the past 20 years, there has been significant development of centrifugal contactor designs and they have become very common for research and development applications. New reprocessing plants are being planned in Russia and China and the United States has done preliminary design studies on future reprocessing plants. The choice of contactors for all of these facilities is yet to be determined.

Jack D. Law; Terry A. Todd

2008-12-01T23:59:59.000Z

80

2000 TMS Fall Extraction and Process Metallurgy Meeting ...  

Science Conference Proceedings (OSTI)

TMS Logo. 2000 TMS Fall Extraction and Process Metallurgy Meeting: Registration Information. 2000 TMS FALL EXTRACTION AND PROCESS METALLURGY...

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

Combined transuranic-strontium extraction process  

DOE Patents (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

82

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

83

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

84

Method of Lipid Extraction - Energy Innovation Portal  

A method of extracting lipids from wet algae, the method includes hydrolyzing a slurry comprising algae and water by adding an acidic hydrolyzing agent to yield an ...

85

SOLVENT EXTRACTION PROCESS FOR URANIUM RECOVERY  

DOE Patents (OSTI)

A process is described for extracting uranium from uranium ore, wherein the uranium is substantially free from molybdenum contamination. In a solvent extraction process for recovering uranium, uranium and molybdenum ions are extracted from the ore with ether under high acidity conditions. The ether phase is then stripped with water at a lower controiled acidity, resaturated with salting materials such as sodium nitrate, and reextracted with the separation of the molybdenum from the uranium without interference from other metals that have been previously extracted.

Clark, H.M.; Duffey, D.

1958-06-17T23:59:59.000Z

86

2006 TMS Fall Extraction and Processing Meeting  

Science Conference Proceedings (OSTI)

2006 TMS Fall Extraction & Processing Meeting: Sohn Int'l Symposium ... Sold out. Hyatt Regency Islandia Hotel In the heart of Mission Bay Park, the Hyatt has ...

87

Extraction of Aromatic Hydrocarbons with Triethylene Glycol ...  

Science Conference Proceedings (OSTI)

introduced in LG 35-8/300B benzene reforming unit. (Kirishinefteorgsintez Production Association). The sulfolane content in the extractant was gradually brought...

88

X-Man Data Extraction System  

Current Weather. Protocol Office. Where to stay. Tri-Valley Visitors Bureau. ... X-Man offers the following advantages over existing data extraction tools:

89

Natural Gas Total Liquids Extracted  

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

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

90

Enhancing clinical concept extraction with distributional semantics  

Science Conference Proceedings (OSTI)

Extracting concepts (such as drugs, symptoms, and diagnoses) from clinical narratives constitutes a basic enabling technology to unlock the knowledge within and support more advanced reasoning applications such as diagnosis explanation, disease progression ... Keywords: Clinical informatics, Distributional semantics, Information extraction, NER, NLP

Siddhartha Jonnalagadda; Trevor Cohen; Stephen Wu; Graciela Gonzalez

2012-02-01T23:59:59.000Z

91

A weighting scheme for open information extraction  

Science Conference Proceedings (OSTI)

We study the problem of extracting all possible relations among named entities from unstructured text, a task known as Open Information Extraction (Open IE). A state-of-the-art Open IE system consists of natural language processing tools to identify ...

Yuval Merhav

2012-06-01T23:59:59.000Z

92

Extracting and classifying Urdu multiword expressions  

Science Conference Proceedings (OSTI)

This paper describes a method for automatically extracting and classifying multiword expressions (mWEs) for Urdu on the basis of a relatively small unannotated corpus (around 8.12 million tokens). The mWEs are extracted by an unsupervised method and ...

Annette Hautli; Sebastian Sulger

2011-06-01T23:59:59.000Z

93

A spreadsheet algorithm for stagewise solvent extraction  

SciTech Connect

Part of the novelty is the way in which the problem is organized in the spreadsheet. In addition, to facilitate spreadsheet setup, a new calculational procedure has been developed. The resulting Spreadsheet Algorithm for Stagewise Solvent Extraction (SASSE) can be used with either IBM or Macintosh personal computers as a simple yet powerful tool for analyzing solvent extraction flowsheets.

Leonard, R.A.; Regalbuto, M.C.

1993-01-01T23:59:59.000Z

94

Accelerating line extraction based on GPU  

Science Conference Proceedings (OSTI)

A new line extraction accelerating algorithm based upon graphics processing units (GPUs) is presented. Several techniques are proposed to optimize the GPU computation. Among those improvements, the most important one is the use of "seed pixels", which ... Keywords: GPU, line extraction, parallel processing, phase-based grouping

Li Yu; Xiao'an Tang; Bo Tang

2011-12-01T23:59:59.000Z

95

Membrane Extraction for Detoxification of Biomass Hydrolysates  

Science Conference Proceedings (OSTI)

Membrane extraction was used for the removal of sulfuric acid, acetic acid, 5-hydroxymethyl furfural and furfural from corn stover hydrolyzed with dilute sulfuric acid. Microporous polypropylene hollow fiber membranes were used. The organic extractant consisted of 15% Alamine 336 in: octanol, a 50:50 mixture of oleyl alcohol:octanol or oleyl alcohol. Rapid removal of sulfuric acid, 5-hydroxymethyl and furfural was observed. The rate of acetic acid removal decreased as the pH of the hydrolysate increased. Regeneration of the organic extractant was achieved by back extraction into an aqueous phase containing NaOH and ethanol. A cleaning protocol consisting of flushing the hydrolysate compartment with NaOH and the organic phase compartment with pure organic phase enabled regeneration and reuse of the module. Ethanol yields from hydrolysates detoxified by membrane extraction using 15% Alamine 336 in oleyl alcohol were about 10% higher than those from hydrolysates detoxified using ammonium hydroxide treatment.

Grzenia, D. L.; Schell, D. J.; Wickramasinghe, S. R.

2012-05-01T23:59:59.000Z

96

Surface Microstructure Extraction from Multiple Aerial Images  

E-Print Network (OSTI)

In this paper we present a system that recovers building facet images from multiple source images and, as a first step towards detailed analysis of microstructures, extracts windows from walls. The system employs a sophisticated multi-image texture mapping technique to eliminate the corrupting effects of shadows and occlusions and to find a "best piece representation" of each facet. The system is model-driven, providing a context-based environment for microstructure analysis. The window extraction module focuses attention on wall facets, attempting to extract the 2-D window patterns attached to the walls using an oriented region growing technique. High-level knowledge is incorporated to simplify the computation of symbolic window extraction. The algorithms are typically useful in urban sites. Experiments show successful applications of this approach to site model refinement. Keywords: microstructure extraction, model refinement, texture mapping, aerial imagery, image understanding 1 I...

Xiaoguang Wang; Robert T. Collins; Jeff Dehart

1997-01-01T23:59:59.000Z

97

Design of the ILC RTML Extraction Lines  

SciTech Connect

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

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

2011-10-17T23:59:59.000Z

98

PAPER 2004-028 The Effect of Bitumen Extraction  

E-Print Network (OSTI)

processing: extraction and froth treatment. The most common extraction process is hot water bitumen performed using a Batch Extraction Unit (BEU) or a Denver Cell (DC) following the Syncrude standard extraction procedures(1) . The BEU is a low-shear laboratory approximation of the Clark hot water extraction

Schramm, Laurier L.

99

Prolonging a high rate of succinate production in dual-phase fermentation using Escherichia coli AFP111.  

E-Print Network (OSTI)

??The commodity chemical succinic acid (succinate) is currently produced frompetrochemicals. Succinate formed through microbial fermentation sequesters carbon dioxide andcould reduce dependence on fossil fuels. This (more)

Kizhsevur Vijayan, Prabu Diravidan

2008-01-01T23:59:59.000Z

100

Energy extraction operations: some preliminary results  

DOE Green Energy (OSTI)

An experimental project being conducted by the Los Alamos Scientific Laboratory (LASL) has extracted thermal energy from Precambrian granitic rock by injection and circulating water through fractured zones or reservoirs. Two boreholes were drilled to depths of about 3 km (10,000 ft) in a location selected for high heat flow and an apparent lack of faulting. Bottom-hole temperature was 205/sup 0/C (400/sup 0/F). The holes were connected at depth by hydraulic fracturing to form a flow path and heat extraction surface. Energy has been extracted at rates exceeding 5 MW(t) in three operations totaling 2847 h. These operations are summarized.

Hendron, R.H.

1979-01-01T23:59:59.000Z

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.


101

SEPARATION OF THORIUM FROM URANIUM BY EXTRACTION  

DOE Patents (OSTI)

A method is presented for the recovery and separation of uranium and thorium values contained in an aqueous nitric acid solution which is more than 3 M in nitric acid. The uranium and thorium containing solution preferable about 7 M in nitric acid is contacted with tributyl phosphatekerosene mixture. Both U and Th are extracted by the immiscible organic. After phase separation the Th is selectively back extracted by contacting with an aqueous nitric acid solution preferably between 0.1 to 1.5 M in nitric acid. The uranium which is still in the organic extractant phase may be recovered by contacting with water.

Bohlmann, E.G.

1959-07-28T23:59:59.000Z

102

A Spreadsheet Algorithm for Stagewise Solvent Extraction  

SciTech Connect

The material balance and equilibrium equations for solvent extraction processes have been combined with computer spreadsheets in a new way so that models for very complex multicomponent multistage operations can be setup and used easily. A part of the novelty is the way in which the problem is organized in the spreadsheet. In addition, to facilitate spreadsheet setup, a new calculational procedure has been developed. The resulting Spreadsheet Algorithm for Stagewise Solvent Extraction (SASSE) can be used with either IBM or Macintosh personal computers as a simple yet powerful tool for analyzing solvent extraction flowsheets.

Leonard, R.A.; Regalbuto, M.C.

1993-08-01T23:59:59.000Z

103

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 from ful

Brinker, J. L.

2004-01-01T23:59:59.000Z

104

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

105

Extractive summaries for educational science content  

Science Conference Proceedings (OSTI)

This paper describes an extractive summarizer for educational science content called COGENT. COGENT extends MEAD based on strategies elicited from an empirical study with domain and instructional experts. COGENT implements a hybrid approach integrating ...

Sebastian de la Chica; Faisal Ahmad; James H. Martin; Tamara Sumner

2008-06-01T23:59:59.000Z

106

Pedagogically useful extractive summaries for science education  

Science Conference Proceedings (OSTI)

This paper describes the design and evaluation of an extractive summarizer for educational science content called COGENT. COGENT extends MEAD based on strategies elicited from an empirical study with science domain and instructional design experts. COGENT ...

Sebastian de la Chica; Faisal Ahmad; James H. Martin; Tamara Sumner

2008-08-01T23:59:59.000Z

107

A Characteristic Extraction Tool for Gravitational Waveforms  

E-Print Network (OSTI)

We develop and calibrate a characteristic waveform extraction tool whose major improvements and corrections of prior versions allow satisfaction of the accuracy standards required for advanced LIGO data analysis. The extraction tool uses a characteristic evolution code to propagate numerical data on an inner worldtube supplied by a 3+1 Cauchy evolution to obtain the gravitational waveform at null infinity. With the new extraction tool, high accuracy and convergence of the numerical error can be demonstrated for an inspiral and merger of mass M binary black holes even for an extraction worldtube radius as small as R = 20M. The tool provides a means for unambiguous comparison between waveforms generated by evolution codes based upon different formulations of the Einstein equations and based upon different numerical approximations.

M. C. Babiuc; B. Szilagyi; J. Winicour; Y. Zlochower

2010-11-18T23:59:59.000Z

108

Polymers for metal extractions in carbon dioxide  

DOE Patents (OSTI)

A composition useful for the extraction of metals and metalloids comprises (a) carbon dioxide fluid (preferably liquid or supercritical carbon dioxide); and (b) a polymer in the carbon dioxide, the polymer having bound thereto a ligand that binds the metal or metalloid; with the ligand bound to the polymer at a plurality of locations along the chain length thereof (i.e., a plurality of ligands are bound at a plurality of locations along the chain length of the polymer). The polymer is preferably a copolymer, and the polymer is preferably a fluoropolymer such as a fluoroacrylate polymer. The extraction method comprises the steps of contacting a first composition containing a metal or metalloid to be extracted with a second composition, the second composition being as described above; and then extracting the metal or metalloid from the first composition into the second composition.

DeSimone, Joseph M. (7315 Crescent Ridge Dr., Chapel Hill, NC 27516); Tumas, William (1130 Big Rock Loop, Los Alamos, NM 87544); Powell, Kimberly R. (103 Timber Hollow Ct. Apartment 323, Chapel Hill, NC 27514); McCleskey, T. Mark (1930 Camino Mora, Los Alamos, NM 87544); Romack, Timothy J. (5810 Forest Ridge Dr., Durham, NC 27713); McClain, James B. (8530 Sommersweet La., Raleigh, NC 27612); Birnbaum, Eva R. (1930 Camino Mora, Los Alamos, NM 87544)

2001-01-01T23:59:59.000Z

109

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

110

Process for extracting technetium from alkaline solutions  

DOE Patents (OSTI)

This invention relates generally to a process for extracting technetium from nuclear wastes and more particularly to a process for extracting technetium from alkaline waste solutions containing technetium and high concentrations of alkali metal nitrates. A process for extracting technetium values from an aqueous alkaline solution containing at least one alkali metal hydroxide and at least one alkali metal nitrate comprises the steps of: contacting the aqueous alkaline solution with a solvent consisting of a crown ether in a diluent, the diluent being a water-immiscible organic liquid in which the crown ether is soluble, for a period of time sufficient to selectively extract the technetium values from the aqueous alkaline solution into the solvent; separating the solvent containing the technetium values from the aqueous alkaline solution; and stripping the technetium values from the solvent by contacting the solvent with water.

Moyer, B.A.; Sachleben, R.A.; Bonnesen, P.V.

1994-12-31T23:59:59.000Z

111

Recovery of Sugars by Solvent Extraction - Energy ...  

Researchers at the Joint BioEnergy Institute (JBEI) have developed a technology to extract 5C and 6C sugars directly at two points in an ionic liquid ...

112

PROCESS FOR PRODUCING ALKYL ORTHOPHOSPHORIC ACID EXTRACTANTS  

DOE Patents (OSTI)

A process is given for producing superior alkyl orthophosphoric acid extractants for use in solvent extraction methods to recover and purify various metals such as uranium and vanadium. The process comprises slurrying P/sub 2/O/ sub 5/ in a solvent diluent such as kerosene, benzene, isopropyl ether, and the like. An alipbatic alcohol having from nine to seventeen carbon atoms, and w- hcrein ihc OH group is situated inward of the terminal carbon atoms, is added to the slurry while the reaction temperature is mainiained below 60 deg C. The alcohol is added in the mole ratio of about 2 to l, alcohol to P/sub 2/O/sub 5/. A pyrophosphate reaotion product is formed in the slurry-alcohol mixture. Subsequently, the pyrophosphate reaction product is hydrolyzed with dilute mineral acid to produce the desired alkyl orthophosphoric aeid extractant. The extraetant may then be separated and utilized in metal-recovery, solvent- extraction processes. (AEC)

Grinstead, R.R.

1962-01-23T23:59:59.000Z

113

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

114

Federal Offshore--Gulf of Mexico Natural Gas Extraction Loss...  

Annual Energy Outlook 2012 (EIA)

Pages: Extraction Loss of Natural Gas at Processing Plants (Summary) Federal Offshore Gulf of Mexico Natural Gas Plant Processing Extraction Loss of Natural Gas at...

115

EIS-0271: Construction and Operation of a Tritium Extraction...  

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

EIS-0271: Construction and Operation of a Tritium Extraction Facility at the Savannah Siver Site EIS-0271: Construction and Operation of a Tritium Extraction Facility at the...

116

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

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

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...

117

2000 TMS Fall Extraction and Process Metallurgy Meeting  

Science Conference Proceedings (OSTI)

TMS Logo. 2000 TMS Fall Extraction and Process Metallurgy Meeting: New Technologies for the Next Millennium. 2000 TMS FALL EXTRACTION AND...

118

2000 TMS Fall Extraction and Process Metallurgy Meeting: US Air  

Science Conference Proceedings (OSTI)

TMS Logo. 2000 TMS Fall Extraction and Process Metallurgy Meeting: U.S. Airways. 2000 TMS FALL EXTRACTION AND PROCESS METALLURGY MEETING:...

119

South Dakota Natural Gas Extraction Loss (Million Cubic Feet...  

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

View History: Annual Download Data (XLS File) South Dakota Natural Gas Extraction Loss (Million Cubic Feet) South Dakota Natural Gas Extraction Loss (Million Cubic Feet) Decade...

120

Definition extraction for glossary creation : a study on extracting definitions for semi-automatic glossary creation in Dutch.  

E-Print Network (OSTI)

??The central topic of this thesis is the automatic extraction of definitions from text. Definition extraction can play a role in various applications including the (more)

Westerhout, E.N.

2010-01-01T23:59:59.000Z

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


121

AGS RESONANT EXTRACTION WITH HIGH INTENSITY BEAMS.  

SciTech Connect

The Brookhaven AGS third integer resonant extraction system allows the AGS to provide high quality, high intensity 25.5 GeV/c proton beams simultaneously to four target stations and as many as 8 experiments. With the increasing intensities (over 7 x 10{sup 13} protons/pulse) and associated longer spill periods (2.4 to 3 seconds long), we continue to run with low losses and high quality low modulation continuous current beams.[1] Learning to extract and transport these higher intensity beams has required a process of careful modeling and experimentation. We have had to learn how to correct for various instabilities and how to better match extraction and the transport lines to the higher emittance beams being accelerated in the AGS. Techniques employed include ''RF'' methods to smooth out momentum distributions and fine structure. We will present results of detailed multi-particle tracking modeling studies which enabled us to develop a clear understanding of beam loss mechanisms in the transport and extraction process. We will report on our status, experiences, and the present understanding of the intensity limitations imposed by resonant extraction and transport to fixed target stations.

AHRENS,L.; BROWN,K.; GLENN,J.W.; ROSER,T.; TSOUPAS,N.; VANASSELT,W.

1999-03-29T23:59:59.000Z

122

Energy Extraction for the LHC Superconducting Circuits  

E-Print Network (OSTI)

The superconducting magnets of the LHC will be powered in about 1700 electrical circuits. The energy stored in circuits, up to 1.3 GJ, can potentially cause severe damage of magnets, bus bars and current leads. In order to protect the superconducting elements after a resistive transition, the energy is dissipated into a dump resistor installed in series with the magnet chain that is switched into the circuit by opening current breakers. Experiments and simulation studies have been performed to identify the LHC circuits that need energy extraction. The required values of the extraction resistors have been computed. The outcome of the experimental results and the simulation studies are presented and the design of the different energy extraction systems that operate at 600 A and at 13 kA is described.

Dahlerup-Petersen, K; Schmidt, R; Sonnemann, F

2001-01-01T23:59:59.000Z

123

Ethanol extraction of phytosterols from corn fiber  

Science Conference Proceedings (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

124

review of extraction, processing, properties & applications of reactive ...  

Science Conference Proceedings (OSTI)

REVIEW OF EXTRACTION,. PROCESSING, PROPERTIES. & APPLICATIONS OF. REACTIVE METALS. Edited by. Brajendra Mishra...

125

Using structured text for large-scale attribute extraction  

Science Conference Proceedings (OSTI)

We propose a weakly-supervised approach for extracting class attributes from structured text available within Web documents. The overall precision of the extracted attributes is around 30% higher than with previous methods operating on Web documents. ... Keywords: class attribute extraction, knowledge acquisition, structured text collections, weakly-supervised information extraction

Sujith Ravi; Marius Pa?ca

2008-10-01T23:59:59.000Z

126

Fractured Geothermal Growth Induced by Heat Extraction  

SciTech Connect

Field testing of a hydraulically stimulated, hot dry rock (HDR) geothermal system at the Fenton Hill site in northern New Mexico indicated that significant reservoir growth occurred as energy was extracted. Tracer, microseismic, and geochemical measurements provided the primary quantitative evidence for the increases in accessible reservoir volume and fractured rock surface area that were observed during energy extraction operations that caused substantial thermal drawdown in portions of the reservoir. These temporal increases suggest that augmentation of reservoir hear-production capacity in an HDR system may be possible. [DJE 2005

Tester, J.W.; Murphy, H.D.; Grigsby, C.O.; Potter, R.M.; Robinson, B.A.

1989-02-01T23:59:59.000Z

127

Catalog solvent extraction: anticipate process adjustments  

SciTech Connect

The Modular Caustic-Side Solvent Extraction Unit (MCU) utilizes commercially available centrifugal contactors to facilitate removal of radioactive cesium from highly alkaline salt solutions. During the fabrication of the contactor assembly, demonstrations revealed a higher propensity for foaming than was initially expected. A task team performed a series of single-phase experiments that revealed that the shape of the bottom vanes and the outer diameter of those vanes are key to the successful deployment of commercial contactors in the Caustic-Side Solvent Extraction Process. (authors)

Campbell, S.G.; Brass, E.A.; Brown, S.J.; Geeting, M.W. [Washington Savannah River Company, Savannah River Site, Aiken, SC (United States)

2008-07-01T23:59:59.000Z

128

Process for extracting technetium from alkaline solutions  

DOE Patents (OSTI)

A process for extracting technetium values from an aqueous alkaline solution containing at least one alkali metal hydroxide and at least one alkali metal nitrate, the at least one alkali metal nitrate having a concentration of from about 0.1 to 6 molar. The solution is contacted with a solvent consisting of a crown ether in a diluent for a period of time sufficient to selectively extract the technetium values from the aqueous alkaline solution. The solvent containing the technetium values is separated from the aqueous alkaline solution and the technetium values are stripped from the solvent.

Moyer, Bruce A. (Oak Ridge, TN); Sachleben, Richard A. (Knoxville, TN); Bonnesen, Peter V. (Knoxville, TN)

1995-01-01T23:59:59.000Z

129

Topic relatedness in evaluative information extraction  

Science Conference Proceedings (OSTI)

The task of extracting opinions/evaluations related to a given topic from a large number of documents such as Web documents is crucial for developing an automatic evaluation finding system, which can handle a wide variety of topics as input. In this ...

Takuya Kawada; Tetsuji Nakagawa; Kentaro Inui; Sadao Kurohashi

2009-12-01T23:59:59.000Z

130

Extracting chatbot knowledge from online discussion forums  

Science Conference Proceedings (OSTI)

This paper presents a novel approach for extracting high-quality ?thread-title, reply? pairs as chat knowledge from online discussion forums so as to efficiently support the construction of a chatbot for a certain domain. Given a forum, the ...

Jizhou Huang; Ming Zhou; Dan Yang

2007-01-01T23:59:59.000Z

131

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

132

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

133

Slavonic information extraction and partial parsing  

Science Conference Proceedings (OSTI)

Information Extraction (IE) often involves some amount of partial syntactic processing. This is clear in cases of interesting high-level IE tasks, such as finding information about who did what to whom (when, where, how and why), but it is also true ...

Adam Przepirkowski

2007-06-01T23:59:59.000Z

134

Solvent Extraction, Electrowinning and Related Technologies  

Science Conference Proceedings (OSTI)

... Xstrata Process Support; Gordon Cooper, SNC Lavalin; Nosrat Behnood, PTMC Inc ... Crud and Organic Recovery Economics in Mineral Processing: Derek Ettie1; ... large aqueous-to-oil phase ratio extraction and enrichment of rare-earth ions ... which relates optimal operational condition to enhance anode lifecycles.

135

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

136

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

137

Energy extraction from crustal magma bodies  

DOE Green Energy (OSTI)

An open heat exchanger system for extracting thermal energy directly from shallow crustal magma bodies is described. The concept relies on natural properties of magma to create a permeable, solidified region surrounding a borehole drilled into the magma chamber. The region is fractured, possessing large surface area, and is sealed from the overburden. Energy is extracted by circulating a fluid through the system. Thermal stress analysis shows that such a fractured region can be developed at depths up to 10 km. An open heat exchanger experiment conducted in the partial melt zone of Kilauea Iki lava lake demonstrated the validity of this concept. Effective heat transfer surface area an order of magnitude greater than the borehole area was established during a two-day test period. The open heat exchanger concept greatly extends the number of magma systems that can be economically developed to produce energy.

Dunn, J.C.

1982-01-01T23:59:59.000Z

138

Extraction of Freshwater and Energy from Atmosphere  

E-Print Network (OSTI)

Author offers and researches a new, cheap method for the extraction of freshwater from the Earth atmosphere. The suggected method is fundamentally dictinct from all existing methods that extract freshwater from air. All other industrial methods extract water from a saline water source (in most cases from seawater). This new method may be used at any point in the Earth except Polar Zones. It does not require long-distance freshwater transportation. If seawater is not utilized for increasing its productivity, this inexpensive new method is very environment-friendly. The author method has two working versions: (1) the first variant the warm (hot) atmospheric air is lifted by the inflatable tube in a high altitude and atmospheric steam is condenced into freswater: (2) in the second version, the warm air is pumped 20-30 meters under the sea-surface. In the first version, wind and solar heating of air are used for causing air flow. In version (2) wind and propeller are used for causing air movment. The first method does not need energy, the second needs a small amount. Moreover, in variant (1) the freshwater has a high pressure (>30 or more atm.) and can be used for production of energy such as electricity and in that way the freshwater cost is lower. For increasing the productivity the seawater is injected into air and solar air heater may be used. The solar air heater produces a huge amount of electricity as a very powerful electricity generation plant. The offered electricity installation in 100 - 200 times cheaper than any common electric plant of equivalent output. Key words: Extraction freshwater, method of getting freshwater, receiving energy from atmosphere, powerful renewal electric plant.

Alexander Bolonkin

2007-04-19T23:59:59.000Z

139

STRIPPING OF URANIUM FROM ORGANIC EXTRACTANTS  

DOE Patents (OSTI)

A liquid-liquid extraction method is given for recovering uranium values from uranium-containing solutions. Uranium is removed from a uranium-containing organic solution by contacting said organic solution with an aqueous ammonium carbonate solution substantially saturated in uranium values. A uranium- containing precipitate is thereby formed which is separated from the organic and aqueous phases. Uranium values are recovered from this separated precipitate. (AE C)

Crouse, D.J. Jr.

1962-09-01T23:59:59.000Z

140

Extracting TMDs from CLAS12 data  

Science Conference Proceedings (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; Avakian, Harut A. [JLAB

2014-01-01T23:59:59.000Z

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.


141

Recent progress in magma energy extraction  

DOE Green Energy (OSTI)

Ongoing research in the area of Magma Energy Extraction is directed at developing a fundamental understanding of the establishment and long term operation of an open, direct-contact heat exchanger in a crustal magma body. The energy extraction rate has a direct influence on the economic viability of the concept. An open heat exchanger, in which fluid is circulated through the interconnecting fissures and fractures in the solidified region around drilling tubing, offers the promise of very high rates of heat transfer. This paper discusses recent research in five areas: (1) fundamental mechanisms of solidifying and thermally fracturing magma; (2) convective heat transfer in the internally fractured solidified magma; (3) convective flow in the molten magma and heat transfer from the magma to the cooled heat exchanger protruding into it; (4) numerical simulation of the overall energy extraction process; and (5) the thermodynamics of energy conversion in a magma power plant at the surface. The studies show that an open heat exchanger can be formed by solidifying magma around a cooled borehole and that the resulting mass will be extensively fractured by thermally-induced stresses. Numerical models indicate that high quality thermal energy can be delivered at the wellhead at nominal rates from 25 to 30 MW electric. It is shown that optimum well circulation rates can be found that depend on the heat transfer characteristics of the magma heat exchanger and the thermodynamic power conversion efficiencies of the surface plant.

Ortega, A.; Dunn, J.C.; Chu, T.Y.; Wemple, R.P.; Hickox, C.E.

1987-01-01T23:59:59.000Z

142

Extraction of Freshwater and Energy from Atmosphere  

E-Print Network (OSTI)

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

Bolonkin, Alexander

2007-01-01T23:59:59.000Z

143

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

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

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

144

Multi-document summarisation using generic relation extraction  

Science Conference Proceedings (OSTI)

Experiments are reported that investigate the effect of various source document representations on the accuracy of the sentence extraction phase of a multi-document summarisation task. A novel representation is introduced based on generic relation extraction ...

Ben Hachey

2009-08-01T23:59:59.000Z

145

Extraction of nanosized cobalt sulfide from spent hydrocracking catalyst  

Science Conference Proceedings (OSTI)

The processes used for the extraction of metals (Co, Mo, and Al) from spent hydrotreating catalysts were investigated in this study. A detailed mechanism of the metal extraction process is described. Additionally, a simulation study was performed to ...

Samia A. Kosa, Eman Z. Hegazy

2013-01-01T23:59:59.000Z

146

Relevant learning objects extraction based on semantic annotation  

Science Conference Proceedings (OSTI)

We propose, in this paper, a model that extracts automatically learning objects as response to a user request. To do this, we proceed by automatically annotating texts with semantic metadata. These metadata will allow us to index and extract learning ...

Boutheina Smine; Rim Faiz; Jean-Pierre Descls

2013-05-01T23:59:59.000Z

147

Minimally supervised domain-adaptive parse reranking for relation extraction  

Science Conference Proceedings (OSTI)

The paper demonstrates how the generic parser of a minimally supervised information extraction framework can be adapted to a given task and domain for relation extraction (RE). For the experiments a generic deep-linguistic parser was employed that works ...

Feiyu Xu; Hong Li; Yi Zhang; Hans Uszkoreit; Sebastian Krause

2011-10-01T23:59:59.000Z

148

Dynamic Hierarchical Markov Random Fields for Integrated Web Data Extraction  

Science Conference Proceedings (OSTI)

Existing template-independent web data extraction approaches adopt highly ineffective decoupled strategies---attempting to do data record detection and attribute labeling in two separate phases. In this paper, we propose an integrated web data extraction ...

Jun Zhu; Zaiqing Nie; Bo Zhang; Ji-Rong Wen

2008-06-01T23:59:59.000Z

149

California Natural Gas Total Liquids Extracted - State of Origin...  

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

Liquids Extracted - State of Origin (Thousand Barrels) California Natural Gas Total Liquids Extracted - State of Origin (Thousand Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

150

New Mexico Natural Gas Total Liquids Extracted - State of Origin...  

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

Liquids Extracted - State of Origin (Thousand Barrels) New Mexico Natural Gas Total Liquids Extracted - State of Origin (Thousand Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

151

Proceedings of ISEC 2008, International Solvent Extraction Conference - Solvent Extraction: Fundamentals to Industrial Applications  

Science Conference Proceedings (OSTI)

The North American industry has employed major solvent-extraction processes to support a wide range of separations including but not limited to chemical, metallurgical, nuclear, biochemical, pharmaceutical, and petroleum applications. The knowledge enabling these separations has been obtained through fundamental studies in academe, government and industry. The International Solvent Extraction Conferences have been and continue to be a major gathering of scientists, engineers, operators, and vendors from around the world, who present new findings since the last meeting, exchange ideas, make business contacts, and conduct collegial discussions. The ISEC 2008 program emphasizes fundamentals to industrial applications of solvent extraction, particularly how this broad spectrum of activities is interconnected and has led to the implementation of novel processes. The oral and poster sessions have been organized into seven topics: Fundamentals; Novel Reagents, Materials and Techniques; Nuclear Fuel Reprocessing; Hydrometallurgy and Metals Extraction; Analytical and Preparative Applications; Biotechnology, Pharmaceuticals, Life-Science Products, and Organic Products; and Process Chemistry and Engineering. Over 350 abstracts were received, resulting in more than 260 manuscripts published in these proceedings. Five outstanding plenary presentations have been identified, with five parallel sessions for oral presentations and posters. In recognition of the major role solvent extraction (SX) plays in the hydrometallurgical and nuclear industries, these proceedings begin with sections focusing on hydrometallurgy, process chemistry, and engineering. More fundamental topics follow, including sections on novel reagents, materials, and techniques, featuring novel applications in analytical and biotechnology areas. Despite the diversity of topics and ideas represented, however, the primary focus of the ISEC community continues to be metals extraction. Four papers from these proceedings have been entered already in INIS in the form of individual reports. Among the remaining papers, 60 have been selected from the following sessions: Plenary Lectures, Hydrometallurgy and Metals Extraction, Nuclear Fuel Reprocessing, Analytical and Preparative Applications, Fundamentals, and Novel Reagents, Materials, and Techniques.

Moyer, Bruce A. (ed.)

2008-07-01T23:59:59.000Z

152

CONVERSION EXTRACTION DESULFURIZATION (CED) PHASE III  

DOE Green Energy (OSTI)

This project was undertaken to refine the Conversion Extraction Desulfurization (CED) technology to efficiently and economically remove sulfur from diesel fuel to levels below 15-ppm. CED is considered a generic term covering all desulfurization processes that involve oxidation and extraction. The CED process first extracts a fraction of the sulfur from the diesel, then selectively oxidizes the remaining sulfur compounds, and finally extracts these oxidized materials. The Department of Energy (DOE) awarded Petro Star Inc. a contract to fund Phase III of the CED process development. Phase III consisted of testing a continuous-flow process, optimization of the process steps, design of a pilot plant, and completion of a market study for licensing the process. Petro Star and the Degussa Corporation in coordination with Koch Modular Process Systems (KMPS) tested six key process steps in a 7.6-centimeter (cm) (3.0-inch) inside diameter (ID) column at gas oil feed rates of 7.8 to 93.3 liters per hour (l/h) (2.1 to 24.6 gallons per hour). The team verified the technical feasibility with respect to hydraulics for each unit operation tested and successfully demonstrated pre-extraction and solvent recovery distillation. Test operations conducted at KMPS demonstrated that the oxidation reaction converted a maximum of 97% of the thiophenes. The CED Process Development Team demonstrated that CED technology is capable of reducing the sulfur content of light atmospheric gas oil from 5,000-ppm to less than 15-ppm within the laboratory scale. In continuous flow trials, the CED process consistently produced fuel with approximately 20-ppm of sulfur. The process economics study calculated an estimated process cost of $5.70 per product barrel. The Kline Company performed a marketing study to evaluate the possibility of licensing the CED technology. Kline concluded that only 13 refineries harbored opportunity for the CED process. The Kline study and the research team's discussions with prospective refineries led to the conclusion that there were not likely prospects for the licensing of the CED process.

James Boltz

2005-03-01T23:59:59.000Z

153

Extracting Alumina from Coal Flyash through Sodium Aluminate ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, 2010 TMS Annual Meeting & Exhibition. Symposium , Alumina and Bauxite. Presentation Title, Extracting Alumina from Coal Flyash...

154

Open-Domain, Customizable Information Extraction (or: How I ...  

Science Conference Proceedings (OSTI)

... 2. Polysemy Extract features and cluster similar entities NSC (Iran) ? NSC (Malaysia) ... (2) NIL (1) National Security Council (Malaysia) (1) ...

2012-02-27T23:59:59.000Z

155

WATER CONSUMPTION OF ENERGY RESOURCE EXTRACTION, PROCESSING, AND CONVERSION  

E-Print Network (OSTI)

A review of the literature for estimates of water intensity of energyresource extraction, processing to fuels, and conversion to electricity

Erik Mielke; Laura Diaz Anadon; Venkatesh Narayanamurti; Erik Mielke; Laura Diaz Anadon; Venkatesh Narayanamurti

2010-01-01T23:59:59.000Z

156

From Extractive Metallurgy to Materials Engineering: A Personal ...  

Science Conference Proceedings (OSTI)

About this Abstract. Meeting, Materials Science & Technology 2013. Symposium, Ralph Lloyd Harris Memorial Symposium. Presentation Title, From Extractive...

157

Available Technologies: Recovery of Sugars by Solvent Extraction  

The process minimizes toxic byproducts and facilitates ionic liquid reuse. The JBEI invention uses solvent extraction technology, ...

158

Cluster-Centric Approach to News Event Extraction  

Science Conference Proceedings (OSTI)

This paper presents a real-time and multilingual news event extraction system developed at the Joint Research Centre of the European Commission. It is capable of accurately and efficiently extracting violent and natural disaster events from online news. ... Keywords: Event Extraction, Information Aggregation, Shallow Text Processing

Jakub Piskorski; Hristo Tanev; Martin Atkinson; Erik Van Der Goot

2008-06-01T23:59:59.000Z

159

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

160

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

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

A review of vessel extraction techniques and algorithms  

Science Conference Proceedings (OSTI)

Vessel segmentation algorithms are the critical components of circulatory blood vessel analysis systems. We present a survey of vessel extraction techniques and algorithms. We put the various vessel extraction approaches and techniques in perspective ... Keywords: Magnetic resonance angiography, X-ray angiography, medical imaging, neurovascular, vessel extraction

Cemil Kirbas; Francis Quek

2004-06-01T23:59:59.000Z

162

Semantics-aware open information extraction in the biomedical domain  

Science Conference Proceedings (OSTI)

The increasing amount of biomedical scientific literature published on the Web is demanding new tools and methods to automatically process and extract relevant information. Traditional information extraction has focused on recognizing well-defined entities ... Keywords: biomedical domain, relation extraction, semantic annotation

Victoria Nebot; Rafael Berlanga

2011-12-01T23:59:59.000Z

163

Extracting Meronyms for a Biology Knowledge Base Using Distant Supervision  

E-Print Network (OSTI)

proven elusive. This paper reports on a thor- ough exploration of distant supervision to learn a meronymExtracting Meronyms for a Biology Knowledge Base Using Distant Supervision Xiao Ling, Daniel S Information Extraction; Relation Extraction; Distant Su- pervision; Automated Knowledge Base Construction 1

Anderson, Richard

164

Information extraction from concise passages of natural language sources  

Science Conference Proceedings (OSTI)

This paper will present a semi-automated approach for information extraction for ontology construction. The sources used are short news extracts syndicated online. These are used because they contain short passages which provide information in a concise ... Keywords: POS tagging, knowledge engineering, knowledge extraction, knowledge formalization, named entity recognition, natural language processing, ontology construction, ontology population

Sandi Pohorec; Mateja Verli?; Milan Zorman

2010-09-01T23:59:59.000Z

165

Method for Extracting and Sequestering Carbon Dioxide  

DOE Patents (OSTI)

A method and apparatus to extract and sequester carbon dioxide (CO2) from a stream or volume of gas wherein said method and apparatus hydrates CO2, 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 CO2 from a gaseous environment.

Rau, Gregory H.; Caldeira, Kenneth G.

2005-05-10T23:59:59.000Z

166

Confidentiality policies and their extraction from programs  

E-Print Network (OSTI)

We examine a well known confidentiality requirement called noninterference and argue that many systems do not meet this requirement despite maintaining the privacy of its users. We discuss a weaker requirement called incident-insensitive noninterference that captures why these systems maintain the privacy of its users while possibly not satisfying noninterference. We extend this requirement to depend on dynamic information in a novel way. Lastly, we present a method based on model checking to extract from program source code the dynamic incident-insensitive noninterference policy that the given program obeys.

Michael Carl Tschantz; Jeannette M. Wing

2007-01-01T23:59:59.000Z

167

Enhanced Attenuation Technologies: Passive Soil Vapor Extraction  

SciTech Connect

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

168

Kerogen extraction from subterranean oil shale resources  

Science Conference Proceedings (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

169

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)

2009-03-10T23:59:59.000Z

170

SEPARATION OF URANYL NITRATE BY EXTRACTION  

DOE Patents (OSTI)

A process is presented for obtaining U/sup 233/ from solutions containing Pa/sup 233/. A carrier precipitate, such as MnO/sub 2/, is formed in such solutions and carries with it the Pa/sup 233/ present. This precipitate is then dissolved in nitric acid and the solution is aged to allow decay of the Pa/ sup 233/ into U/sup 233/. After a sufficient length of time the U/sup 233/ bearing solution is made 2.5 to 4.5 Molar in manganese nitrate by addition thereof, and the solution is then treated with ether to obtain uranyl nitrate by solvent extraction techniques.

Stoughton, R.W.; Steahly, F.L.

1958-08-26T23:59:59.000Z

171

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

172

Hadron Mass Extraction from Lattice QCD  

E-Print Network (OSTI)

The extraction of quantities from lattice QCD calculations at realistic quark masses is of considerable importance. Whilst physical quark masses are some way off, the recent advances in the calculation of hadron masses within full QCD now invite improved extrapolation methods. We show that, provided the correct chiral behaviour of QCD is respected in the extrapolation to realistic quark masses, one can indeed obtain a fairly reliable determination of masses, the sigma commutator and the J parameter. We summarise these findings by presenting the nonanalytic behaviour of nucleon and rho masses in the standard Edinburgh plot.

S. V. Wright; D. B. Leinweber; A. W. Thomas; K. Tsushima

2001-11-27T23:59:59.000Z

173

Ethanol Extraction Technologies Inc EETI | Open Energy Information  

Open Energy Info (EERE)

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

174

Fuel grade ethanol by solvent extraction: Final subcontract report  

DOE Green Energy (OSTI)

This report summarizes final results for ethanol recovery by solvent extraction and extractive distillation. At conclusion this work can be summarized as ethanol dehydration and recovery dilute fermentates is feasible using liquid/liquid extraction and extractive distillation. Compared to distillation, the economics are more attractive for less than 5 wt % ethanol. However, an economic bias in favor of SEED appears to exist even for 10 wt % feeds. It is of particular interest to consider the group extraction of ethanol and acetic acid followed by conversion to a mixture of ethanol and ethyl acetate. The latter species is a more valuable commodity and group extraction of inhibitory species is one feature of liquid/liquid extraction that is not easily accomodated using distillation. Upflow immobilized reactors offer the possibility of achieving high substrate conversion while also maintaining low metabolite concentrations. However, many questions remain to be answered with such a concept. 135 refs., 42 figs., 61 tabs.

Tedder, D.W.

1987-04-01T23:59:59.000Z

175

Non-Ideal Behavior in Solvent Extraction  

SciTech Connect

This report presents a summary of the work performed to meet FCR&D level 3 milestone M31SW050801, 'Complete the year-end report summarizing FY11 experimental and modeling activities.' This work was carried out under the auspices of the Non-Ideality in Solvent Extraction Systems FCR&D work package. The report summarizes our initial considerations of potential influences that non-ideal chemistry may impose on computational prediction of outcomes in solvent extraction systems. The report is packaged into three separate test cases where a robustness of the prediction by SXFIT program is under scrutiny. The computational exercises presented here emphasize the importance of accurate representation of both an aqueous and organic mixtures when modeling liquid-liquid distribution systems. Case No.1 demonstrates that non-ideal behavior of HDEHP in aliphatic diluents, such as n-dodecane, interferes with the computation. Cases No.2 and No.3 focus on the chemical complexity of aqueous electrolyte mixtures. Both exercises stress the need for an improved thermodynamic model of an aqueous environment present in the europium distribution experiments. Our efforts for year 2 of this project will focus on the improvements of aqueous and non-aqueous solution models using fundamental physical properties of mixtures acquired experimentally in our laboratories.

Peter Zalupski

2011-09-01T23:59:59.000Z

176

Chaotic spectra: How to extract dynamic information  

DOE Green Energy (OSTI)

Nonlinear dynamics is applied to chaotic unassignable atomic and molecular spectra with the aim of extracting detailed information about regular dynamic motions that exist over short intervals of time. It is shown how this motion can be extracted from high resolution spectra by doing low resolution studies or by Fourier transforming limited regions of the spectrum. These motions mimic those of periodic orbits (PO) and are inserts into the dominant chaotic motion. Considering these inserts and the PO as a dynamically decoupled region of space, resonant scattering theory and stabilization methods enable us to compute ladders of resonant states which interact with the chaotic quasi-continuum computed in principle from basis sets placed off the PO. The interaction of the resonances with the quasicontinuum explains the low resolution spectra seen in such experiments. It also allows one to associate low resolution features with a particular PO. The motion on the PO thereby supplies the molecular movements whose quantization causes the low resolution spectra. Characteristic properties of the periodic orbit based resonances are discussed. The method is illustrated on the photoabsorption spectrum of the hydrogen atom in a strong magnetic field and on the photodissociation spectrum of H/sub 3//sup +/. Other molecular systems which are currently under investigation using this formalism are also mentioned. 53 refs., 10 figs., 2 tabs.

Taylor, H.S.; Gomez Llorente, J.M.; Zakrzewski, J.; Kulander, K.C.

1988-10-01T23:59:59.000Z

177

Feature extraction for structural dynamics model validation  

SciTech Connect

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

178

SANS Study of Cellulose Extracted from Switchgrass  

SciTech Connect

AbstractLignocellulosic biomass, an abundant renewable natural resource, has the potential to play a major role in generation of renewable biofuels through its conversion to bio-ethanol. Unfortunately, it is a complex biological composite material that shows significant recalcitrance making it a cost-ineffective feedstock for bioethanol production. Small-angle neutron scattering (SANS) was employed to probe the multi-scale structure of cellulosic materials. Cellulose was extracted from milled native switchgrass and switchgrass that had undergone the dilute acid pretreatment method to disrupt the lignocellulose structure. The high-Q structural feature (Q > 0.07 -1) can be assigned to cellulose fibrils based on comparison with the switchgrass purified by solvent extraction of native and dilute acid pretreated and a commercial preparation of microcrystalline cellulose. Dilute acid pretreatment results in an increase in the smallest structural size, a decrease in the interconnectivity of the fibrils; and no change in the smooth domain boundaries at length scales larger than 1000 .

Pingali, Sai Venkatesh [ORNL; Urban, Volker S [ORNL; Heller, William T [ORNL; McGaughey, Joseph [ORNL; O' Neill, Hugh Michael [ORNL; Foston, Marcus B [ORNL; Myles, Dean A A [ORNL; Ragauskas, Arthur J [ORNL; Evans, Barbara R [ORNL

2010-01-01T23:59:59.000Z

179

Reducing Energy Usage in Extractive Distillation  

E-Print Network (OSTI)

Butadiene 1:3 is separated from other C4-hydrocarbons by extractive distillation in a sieve plate tower. Prior to the development work to be described, the pressure in the extraction tower was controlled at a fixed value. The tower pressure-boilup control loop did not behave satisfactorily in the presence of non-condensables which entered with the feed. The capacity of the flooded reflux drum condenser for the tower was limiting production during summer months. The tower pressure control loop was put on manual. The pressure was allowed to drop to its lowest attainable value for the existing conditions of boilup and condenser cooling capability. This manner of operation is known as floating pressure control. By taking advantage of the higher relative volatility at the lower tower pressure, energy usage was reduced and there was an increase in production capacity. The tower operation at a lower temperature reduced tower and reboiler fouling. Substantial savings have resulted from these improvements. The annual energy consumption has been reduced by 25% and maximum productive capacity is higher by 15%. The rate of tower and reboiler fouling has not been fully quantified but is greatly reduced. A more stable tower operation has also contributed to higher productivity and reduced energy usage. Venting of non-condensables does not affect tower stability and the operators have adapted well to the new control strategy.

Saxena, A. C.; Bhandari, V. A.

1985-05-01T23:59:59.000Z

180

White LED with High Package Extraction Efficiency  

Science Conference Proceedings (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

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

Study of the Optimum Extraction of Coal Resources Based on the Rate of Comprehensive Extraction  

Science Conference Proceedings (OSTI)

Low efficiency and waste are the main problems in the process of coal resources extraction in China. Taking the utilization and recovery rate into account, the article has analyzed the factors influencing the utilization and recovery rate and given some ... Keywords: Coal Resources, Utilization Rate, Recovery Rate, Resource Taxes, Dynamic Optimization

Sun Dachao; Wei Xiaoping; Lu Nan

2010-05-01T23:59:59.000Z

182

Supercritical Fluid Extraction of Plutonium and Americium from Soil  

Science Conference Proceedings (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 65C 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 95C. 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

183

Supercritical Fluid Extraction of Plutonium and Americium from Soil  

Science Conference Proceedings (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

184

White LED with High Package Extraction Efficiency  

Office of Scientific and Technical Information (OSTI)

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

185

Numerical simulation of magma energy extraction  

DOE Green Energy (OSTI)

The Magma Energy Program is a speculative endeavor regarding practical utility of electrical power production from the thermal energy which reside in magma. The systematic investigation has identified an number of research areas which have application to the utilization of magma energy and to the field of geothermal energy. Eight topics were identified which involve thermal processes and which are areas for the application of the techniques of numerical simulation. These areas are: (1) two-phase flow of the working fluid in the wellbore, (2) thermodynamic cycles for the production of electrical power, (3) optimization of the entire system, (4) solidification and fracturing of the magma caused by the energy extraction process, (5) heat transfer and fluid flow within an open, direct-contact, heat-exchanger, (6) thermal convection in the overlying geothermal region, (7) thermal convection within the magma body, and (8) induced natural convection near the thermal energy extraction device. Modeling issues have been identified which will require systematic investigation in order to develop the most appropriate strategies for numerical simulation. It appears that numerical simulations will be of ever increasing importance to the study of geothermal processes as the size and complexity of the systems of interest increase. It is anticipated that, in the future, greater emphasis will be placed on the numerical simulation of large-scale, three-dimensional, transient, mixed convection in viscous flows and porous media. Increased computational capabilities, e.g.; massively parallel computers, will allow for the detailed study of specific processes in fractured media, non-Darcy effects in porous media, and non-Newtonian effects. 23 refs., 13 figs., 1 tab.

Hickox, C.E.

1991-01-01T23:59:59.000Z

186

Extracting value from coal mine methane  

Science Conference Proceedings (OSTI)

Emerging US policy to regulate greenhouse gas (GHG) emissions through a cap-and-trade program presents mine managers with a new opportunity to explore and develop methane utilization or abatement projects that generate value from the anodization of carbon offset credits. In addition, the rising focus on US energy security and domestic energy supply is promoting mine managers and engineers to give further consideration to the importance of their methane gas by-products. The market through which coal mine methane offset projects can be developed and carbon offset credits monetized is quickly maturing. While many methane utilization projects have previously been uneconomical, the carbon offset credit market provides a new set of financing tools for mine engineers to capitalize these projects today. Currently , there are two certification programs that have approved project protocols for CMM projects. The Voluntary Carbon Standard (VCS) offers a methodology approved under the Clean Development Mechanism, the international compliance based offset market under the Kyoto Protocol. The VCS protocol is applicable to projects that combust ventilation air methane (VAM) and methane extracted from pre-and post-mine drainage systems. The Chicago Climate Exchange (CCX), which operates a voluntary yet binding cap-and-trade market, also has an approved protocol for CMM projects. CCX's protocol can be applied to projects combusting VAM, and methane extracted from pre-and-post-mine drainage systems, as well as abandoned mines. The article describes two case studies - Developing a gob gas utilization project financed by carbon offset credits and First VAM oxidation system to be commissioned at an operating mine in the US. 1 tab., 4 photos.

Liebert, B. [Verdao Group (United States)

2009-06-15T23:59:59.000Z

187

A combined cesium-strontium extraction/recovery process  

SciTech Connect

A new solvent extraction process for the simultaneous extraction of cesium and strontium from acidic nitrate media is described. This process uses a solvent formulation comprised of 0.05 M di-t-butylcyclohexano-18-crown-6 (DtBuCH18C6), 0.1 M Crown 100{prime} (a proprietary, cesium-selective derivative of dibenzo-18-crown-6), 1.2 M tributyl phosphate (TBP), and 5% (v/v) lauryl nitrile in an isoparaffinic hydrocarbon diluent. Distribution ratios for cesium and strontium from 4 M nitric acid are 4.13 and 3.46, respectively. A benchtop batch countercurrent extraction experiment indicates that >98% of the cesium and strontium initially present in the feed solution can be removed in only four extraction stages. Through proper choice of extraction and strip conditions, extracted cesium and strontium can be recovered either together or individually.

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

1996-03-01T23:59:59.000Z

188

Extracting Operating Modes from Building Electrical Load Data: Preprint  

Science Conference Proceedings (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

189

Solvent Extraction for the Separation into Nickel and Cobalt with ...  

Science Conference Proceedings (OSTI)

Recovery of Precious Metals from Chloride Media Using Microalgae Waste from Biofuel Extraction Segregation Roasting of a Saprolitic Laterite Ore: An...

190

Extraction of Titanium and Vanadium by Chloride Leach Processes  

Science Conference Proceedings (OSTI)

... extraction of vanadium from different sources such as ilmenite and oil shales. ... of Ammonium Heptamolybdate Tetrahydrate in Air and Inert Gas Atmospheres.

191

Lipid Extraction From Microalgae Using A Single Ionic Liquid ...  

... to a top phase where it is ... Wind Energy; Partners (27) Visual Patent Search; Success Stories; News; Events; Lipid Extraction From Microalgae Using A Single ...

192

Energy Crops Engineered for Increased Sugar Extraction through ...  

Energy Crops Engineered for Increased Sugar Extraction through Inhibition of snl6 Expression Lawrence Berkeley National Laboratory. Contact LBL About This ...

193

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

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

Sites Power Marketing Administration Other Agencies You are here Home Enhanced Geothermal in Nevada: Extracting Heat From the Earth to Generate Sustainable Power Enhanced...

194

Rules and Regulations Governing Leasing for Production or Extraction...  

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

Leasing for Production or Extraction of Oil, Gas and Other Minerals From Onshore State-Owned Lands (Mississippi) Rules and Regulations Governing Leasing for Production or...

195

Changes in Cell Wall Carbohydrate Extractability Are Correlated...  

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

Short Communication Changes in Cell Wall Carbohydrate Extractability Are Correlated with Reduced Recalcitrance of HCT Downregulated Alfalfa Biomass Sivakumar Pattathil, 1 Trina...

196

Extraction Loss of Natural Gas at Processing Plants (Summary...  

Annual Energy Outlook 2012 (EIA)

Extraction Loss Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Data Series Area...

197

Optimal Control of Vapor Extraction of Heavy Oil.  

E-Print Network (OSTI)

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

Muhamad, Hameed

2012-01-01T23:59:59.000Z

198

Extracting Alumina from Low Grade Bauxite with Ammonium ...  

Science Conference Proceedings (OSTI)

The alumina extracted rate can be about 82% to process low grade gibbsite from Indonesia. Proceedings Inclusion? Planned: Light Metals Volume...

199

Technologies for Extracting Valuable Metals and Compounds from...  

Open Energy Info (EERE)

Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Technologies for Extracting Valuable Metals and Compounds from Geothermal Fluids Project...

200

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

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

4:15pm to 5:30pm Colloquia MBG Auditorium COLLOQUIUM: "The Environmental Footprint of Shale Gas Extraction and Hydraulic Fracturing" Professor Robert Jackson Duke University...

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

Green Vehicle Guide Data Extraction Tool | Data.gov  

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

Energy Ethics Health Law Manufacturing Ocean Research Safety States Supply Chain Green Vehicle Guide Data Extraction Tool Consumer Data Apps Challenges Resources About Blogs...

202

T.: Numerical sequence extraction in handwritten incoming mail documents  

E-Print Network (OSTI)

In this communication, we propose a method for the automatic extraction of numerical fields in handwritten documents. The approach exploits the known syntactic structure of the numerical field to extract, combined with a set of contextual morphological features to find the best label to each connected component. Applying an HMM based syntactic analyzer on the overall document allows to localize/extract fields of interest. Reported results on the extraction of zip codes, phone numbers and customer codes from handwritten incoming mail documents demonstrate the interest of the proposed approach. 1.

G. Koch; L. Heutte; T. Paquet

2003-01-01T23:59:59.000Z

203

Geothermal: Sponsored by OSTI -- Extracting and Applying SV-SV...  

Office of Scientific and Technical Information (OSTI)

Extracting and Applying SV-SV Shear Modes from Vertical Vibrator Data Across Geothermal Prospects Final Report Geothermal Technologies Legacy Collection HelpFAQ | Site Map |...

204

Use of Query Concepts and Information Extraction to Improve ...  

Science Conference Proceedings (OSTI)

Page 1. Use of Query Concepts and Information Extraction to Improve Information Retrieval Effectiveness David O. Holmes M. Catherine McCabe ...

205

Microwave-assisted solvent extraction and gas chromatography ion ...  

Science Conference Proceedings (OSTI)

May 17, 2006 ... sistent organochlorine pesticides (POPs) in marine sedi- ment was ... variables microwave power, extraction time and tempera- ture, amount of...

206

Rare Metal Extraction & Processing Symposium - Programmaster.org  

Science Conference Proceedings (OSTI)

Comparison among different extractants, as (2-ethylhexyl)-mono (2-ethylhexyl) ester Phosphonic acid (P507), Secondary-octyl phenoxy acetic acid (CA-12) and ...

207

(ITO) Nanoparticles for Improvement of Light Extraction Efficiency  

Science Conference Proceedings (OSTI)

For making the most enhancement of light extraction efficiency and applying into ... of Powder-based Metals via Current Activated Tip-Based Sintering (CATS).

208

Matrix Studies on Solvent Extraction of Zirconium and Hafnium from ...  

Science Conference Proceedings (OSTI)

Sorption of Se(IV) and Se(VI) Ions onto Biomass Ash ... Tellurium Supply Sensitivity to Growth of Non-Traditional Copper Extraction Techniques - Implications for...

209

Alkaline-side extraction of technetium from tank waste using crown ethers and other extractants  

SciTech Connect

The chemical development of a new crown-ether-based solvent-extraction process for the separation of (Tc) from alkaline tank-waste supernate is ready for counter-current testing. The process addresses a priority need in the proposed cleanup of Hanford and other tank wastes. This need has arisen from concerns due to the volatility of Tc during vitrification, as well as {sup 99}Tc`s long half-life and environmental mobility. The new process offers several key advantages that direct treatability--no adjustment of the waste composition is needed; economical stripping with water; high efficiency--few stages needed; non-RCRA chemicals--no generation of hazardous or mixed wastes; co-extraction of {sup 90}Sr; and optional concentration on a resin. A key concept advanced in this work entails the use of tandem techniques: solvent extraction offers high selectivity, while a subsequent column sorption process on the aqueous stripping solution serves to greatly concentrate the Tc. Optionally, the stripping solution can be evaporated to a small volume. Batch tests of the solvent-extraction and stripping components of the process have been conducted on actual melton Valley Storage Tank (MVST) waste as well as simulants of MVST and Hanford waste. The tandem process was demonstrated on MVST waste simulants using the three solvents that were selected the final candidates for the process. The solvents are 0.04 M bis-4,4{prime}(5{prime})[(tert-butyl)cyclohexano]-18-crown-6 (abbreviated di-t-BuCH18C6) in a 1:1 vol/vol blend of tributyl phosphate and Isopar{reg_sign} M (an isoparaffinic kerosene); 0.02 M di-t-BuCH18C6 in 2:1 vol/vol TBP/Isopar M and pure TBP. The process is now ready for counter-current testing on actual Hanford tank supernates.

Bonnesen, P.V.; Moyer, B.A.; Presley, D.J.; Armstrong, V.S.; Haverlock, T.J.; Counce, R.M.; Sachleben, R.A.

1996-06-01T23:59:59.000Z

210

Toxicity characteristic leaching procedure fails to extract oxoanion-forming elements that are extracted by municipal solid waste leachates  

Science Conference Proceedings (OSTI)

US EPA and state regulatory agencies rely on standard extraction tests to identify wastes that have the potential to contaminate surface water or groundwater. To evaluate the predictive abilities of these extraction tests, the Toxicity Characteristic Leaching Procedure (TCLP), the Waste Extraction Test (WET), and the Synthetic Precipitation Leaching Procedure (SPLP) were compared with actual municipal solid waste leachates (MSWLs) for their ability to extract regulated elements from a variety of industrial solid wastes in short- and long-term extractions. Short-term extractions used MSWLs from a variety of California landfills. Long-term sequential extractions simulated longer term leaching, as might occur in MSW landfills. For most regulated elements, the TCLP roughly predicted the maximum concentrations extracted by the MSWLs. For regulated elements that form oxoanions (e.g., Sb, As, Mo, Se, V), however the TCLP underpredicted the levels extracted by the MSWL. None of the standard tests adequately predicted these levels. The results emphasize the need for better standardized techniques to identify wastes that have the potential to contaminate groundwater with oxoanion-forming elements, particularly arsenic.

Hooper, K.; Iskander, M.; Sivia, G. [California Dept. of Toxic Substances Control, Berkeley, CA (United States). Hazardous Materials Lab.] [and others

1998-12-01T23:59:59.000Z

211

Hot dry rock geothermal heat extraction  

DOE Green Energy (OSTI)

A man-made geothermal reservoir has been created at a depth of 2.7 km in hot, dry granite by hydraulic fracturing. The system was completed by directionally drilling a second well in close proximity with the top of the vertical fracture. In early 1978 heat was extracted from this reservoir for a period of 75 days. During this period thermal power was produced at an average rate of 4 MW(t). Theoretical analysis of th measured drawdown suggests a total fracture heat transfer area of 16,000 m/sup 2/. Viscous impedance to through-flow declined continuously so that at the end of the experiment this impedance was only one-fifth its initial value. Water losses to the surrounding rock formation also decreased continuously, and eventually this loss rate was less than 1% of the circulated flow rate. Geochemical analyses suggest that, with scale up of the heat transfer area and deeper, hotter reservoirs, hot dry rock reservoirs can ultimately produce levels of power on a commercial scale.

Murphy, H.D.

1979-01-01T23:59:59.000Z

212

Method of underground mining by pillar extraction  

SciTech Connect

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

213

Coupling Measurements in ATF2 Extraction Line  

SciTech Connect

The purpose of ATF2 is to deliver a beam with stable very small spotsizes as required for future linear colliders such as ILC or CLIC. To achieve that, precise controls of aberrations such as dispersion and coupling are necessary. Theoretically, the complete reconstruction of the beam matrix is possible from the measurements of horizontal, vertical and tilted beam sizes, combining skew quadrupole scans at several wire-scanner positions. Such measurements were performed in the extraction line (EXT) of ATF2 in May 2009. We present analysis results attempting to resolve the 4 x 4 beam matrix. We aimed to reconstruct the full beam matrix using only skew quadrupole scans at different EXT wire-scanner locations, with measurements of horizontal, vertical and two tilted beam size projections. Checking the coherence of the {sigma}{sub 13} reconstruction from the {sigma}{sub 80{sup o}} and the {sigma}{sub 100{sup o}} measurements was essential to perform this analysis. We have shown that reconstruction of the coupling element can not be performed independantly of the 4 x 4 diagonal ones since it leads to unphysical results. A more accurate and automatisable method was find, leading to physical beam matrix reconstruction, compatible with the measurements. Another analysis should be performed based on a larger number of data sets to minimise statistical errors.

Rimbault, Cecile; /Orsay, LAL; Kuroda, Shigeru; /KEK, Tsukuba; Tauchi, Toshiaki; /KEK, Tsukuba; Terunuma, Nobuhiro; /KEK, Tsukuba; White, Glen; /SLAC; Woodley, Mark; /SLAC

2012-06-29T23:59:59.000Z

214

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway  

DOE Green Energy (OSTI)

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, R.; Biddy, M.; Jones, S.

2013-03-01T23:59:59.000Z

215

Computer Hard Drive Geolocation by HTTP Feature Extraction  

E-Print Network (OSTI)

files of a set of computers acquired in China, part of a larger research data set of real user data [10Computer Hard Drive Geolocation by HTTP Feature Extraction Technical Report UCSC-SSRC-12-04 May://www.ssrc.ucsc.edu/ #12;Computer Hard Drive Geolocation by HTTP Feature Extraction Ziqian Wan Sichuan University Alex J

Miller, Ethan L.

216

Feature Extraction Based on Maximum Nearest Subspace Margin Criterion  

Science Conference Proceedings (OSTI)

Based on the classification rule of sparse representation-based classification (SRC) and linear regression classification (LRC), we propose the maximum nearest subspace margin criterion for feature extraction. The proposed method can be seen as a preprocessing ... Keywords: Dimensionality reduction, Face recognition, Feature extraction, Finger knuckle print recognition, Linear regression classification

Yi Chen; Zhenzhen Li; Zhong Jin

2013-06-01T23:59:59.000Z

217

Learning to extract coherent keyphrases from online news  

Science Conference Proceedings (OSTI)

Keyphrases extracted from news articles can be used to concisely represent the main content of news events. In this paper, we first present several criteria of high-quality news keyphrases. After that, in order to integrate those criteria into the keyphrase ... Keywords: keyphrase extraction, learning to rank, support vector machine

Zhuoye Ding; Qi Zhang; Xuanjing Huang

2011-12-01T23:59:59.000Z

218

Classification of raster maps for automatic feature extraction  

Science Conference Proceedings (OSTI)

Raster maps are widely available and contain useful geographic features such as labels and road lines. To extract the geographic features, most research work relies on a manual step to first extract the foreground pixels from the maps using the distinctive ... Keywords: color histogram, color moments, color-coherence vectors, content-based image retrieval, image similarity, luminance-boundary histogram, raster map classification

Yao-Yi Chiang; Craig A. Knoblock

2009-11-01T23:59:59.000Z

219

Extraction of signals with higher order temporal structure using Correntropy  

Science Conference Proceedings (OSTI)

This paper addresses the problem of semi-blindly extracting one single desired signal using a priori information about its higher order temporal structure. Our approach is based on the maximization of the autocorrentropy function for a given time delay. ... Keywords: Blind source extraction, Correntropy, Information Theoretic Learning (ITL)

Eder Santana; Jose C. Principe; Ewaldo Santana; Allan Kardec Barros

2012-08-01T23:59:59.000Z

220

Method for extracting copper, silver and related metals  

DOE Patents (OSTI)

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

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

1987-10-23T23:59:59.000Z

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

Extracting redundancy-aware top-k patterns  

Science Conference Proceedings (OSTI)

Observed in many applications, there is a potential need of extracting a small set of frequent patterns having not only high significance but also low redundancy. The significance is usually defined by the context of applications. Previous studies have ... Keywords: pattern extraction, redundancy, significance

Dong Xin; Hong Cheng; Xifeng Yan; Jiawei Han

2006-08-01T23:59:59.000Z

222

Using solvent extraction to process nitrate anion exchange column effluents  

SciTech Connect

Octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO), a new organophosphorous extractant, and a new centrifugal mixer-settler both recently developed at Argonne were evaluated for their potential use in the recovery of actinides from nitrate anion exchange column effluents. The performance of the extractant was evaluated by measuring the extraction coefficient values as a function of acid and salt concentration. Additional performance parameters include extraction coefficient behavior as a function of the total metal concentration in the organic phase, and comparison of different stripping and organic scrubbing techniques. A simulated effluent stream was used to evaluate the performance of the centrifugal mixer-settlers by comparing experimental and calculated interstage concentration profiles. Both the CMPO extractant and the centrifugal mixer-settlers have potential for processing nitrate column effluents, particularly if the stripping behavior can be improved. Details of the proposed process are presented in the flowsheet and contactor design analyses.

Yarbro, S.L.

1987-10-01T23:59:59.000Z

223

Studies of the thermodynamics of extraction f-elements.  

SciTech Connect

Though they were discovered in the 18th century, practical applications of individual lanthanides were not possible until the development of first ion exchange and later solvent extraction techniques. Today, solvent extraction using lipophilic organophosphorus complexants is the principal separation technique applied for lanthanide production by hydrometallurgy. Separations chemistry (coprecipitation, ion exchange, and solvent extraction) also was central to both the discovery of the individual actinides and to the preparation of samples of sufficient purity to allow elucidation of their chemical/physical properties. Solvent extraction, in the form of the PUREX process, has become the single most important separations process in actinide technology. In this report, the basic thermodynamics of extraction of actinide and lanthanide metal ions is discussed.

Nash, K. L.

1998-12-07T23:59:59.000Z

224

Solvent extraction of Southern US tar sands  

SciTech Connect

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

225

Direct Biohydrometallurgical Extraction of Iron from Ore  

Science Conference Proceedings (OSTI)

A completely novel approach to iron extraction was investigated, based on reductive leaching of iron by anaerobic bacteria. Microorganisms were collected from an anaerobic bog where natural seepage of dissolved iron was observed. This mixed culture was used to reduce insoluble iron in a magnetite ore to the soluble ferrous (Fe{sup +2}) state. While dissolution rates were slow, concentrations of dissolved iron as high as 3487 mg/l could be reached if sufficient time was allowed. A factorial study of the effects of trace nutrients and different forms of organic matter indicated that the best dissolution rates and highest dissolved iron concentrations were achieved using soluble carbohydrate (sucrose) as the bacterial food source, and that nutrients other than nitrogen, phosphorus, potassium, sodium, and acetate were not necessary. A key factor in reaching high levels of dissolved iron was maintaining a high level of carbon dioxide in solution, since the solubility of iron carbonates increases markedly as the quantity of dissolved carbon dioxide increases. Once the iron is dissolved, it has been demonstrated that the ferrous iron can then be electroplated from solution, provided that the concentration of iron is sufficiently high and the hydrogen ion concentration is sufficiently low. However, if the leaching solution is electrolyzed directly, organic matter precipitates at the cathode along with the metallic iron. To prevent this problem, the ferrous iron should be separated from the bulk solution in a more concentrated, purified form. One route to accomplishing this is to take advantage of the change in solubility of ferrous iron as a function of carbon dioxide concentration. By cycling the concentration of carbon dioxide in solution, it is possible to produce an iron-rich concentrate that should be suitable for electrolysis. This represents the first viable hydrometallurgical method for leaching iron directly from ore and producing metallic iron.

T.C. Eisele

2005-10-01T23:59:59.000Z

226

Step-wise supercritical extraction of carbonaceous residua  

DOE Patents (OSTI)

A method of fractionating a mixture containing high boiling carbonaceous material and normally solid mineral matter includes processing with a plurality of different supercritical solvents. The mixture is treated with a first solvent of high critical temperature and solvent capacity to extract a large fraction as solute. The solute is released as liquid from solvent and successively treated with other supercritical solvents of different critical values to extract fractions of differing properties. Fractionation can be supplemented by solute reflux over a temperature gradient, pressure let down in steps and extractions at varying temperature and pressure values.

Warzinski, Robert P. (Venetia, PA)

1987-01-01T23:59:59.000Z

227

Method and apparatus for back-extracting metal chelates  

DOE Patents (OSTI)

A method is described for extracting metal and metalloid species from a solid or liquid substrate using a supercritical fluid solvent containing one or more chelating agents followed by back-extracting the metal and metalloid species from the metal and metalloid chelates formed thereby. The back-extraction acidic solution is performed utilizing an acidic solution. Upon sufficient exposure of the metal and metalloid chelates to the acidic solution, the metal and metalloid species are released from the chelates into the acid solution, while the chelating agent remains in the supercritical fluid solvent. The chelating agent is thereby regenerated and the metal and metalloid species recovered. 3 figs.

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

1998-08-11T23:59:59.000Z

228

Method and apparatus for back-extracting metal chelates  

DOE Patents (OSTI)

A method of extracting metal and metalloid species from a solid or liquid substrate using a supercritical fluid solvent containing one or more chelating agents followed by back-extracting the metal and metalloid species from the metal and metalloid chelates formed thereby. The back-extraction acidic solution is performed utilizing an acidic solution. Upon sufficient exposure of the metal and metalloid chelates to the acidic solution, the metal and metalloid species are released from the chelates into the acid solution, while the chelating agent remains in the supercritical fluid solvent. The chelating agent is thereby regenerated and the metal and metalloid species recovered.

Wai, Chien M. (Moscow, IA); Smart, Neil G. (Moscow, IA); Lin, Yuehe (Moscow, IA)

1998-01-01T23:59:59.000Z

229

Degradation problems with the solvent extraction organic at Roessing uranium  

Science Conference Proceedings (OSTI)

Roessing Uranium Ltd recovers uranium from a low-grade ore in Namibia. Uranium is recovered and purified from an ion-exchange eluate in a solvent-extraction plant. The solvent-extraction plant uses Alamine 336 as the extractant for uranium, with isodecanol used as a phase modifier in Sasol SSX 210, an aliphatic hydrocarbon diluent. Since the plant started in the mid 1970's, there have been a few episodes where the tertiary amine has been quickly and severely degraded when the plant was operated outside certain operating parameters. The Rossing experience is discussed in more detail in this paper. (authors)

Munyungano, Brodrick [Roessing Uranium Ltd, Private Bag 5005, Swakopmund (Namibia); Feather, Angus [Cognis, P. O. Box 361, Honeydew, 2040 (South Africa); Virnig, Michael [Cognis Corporation, 2430 N. Huachuca Dr, Tucson, Az (United States)

2008-07-01T23:59:59.000Z

230

Centrifugal contractors for laboratory-scale solvent extraction tests  

SciTech Connect

A 2-cm contactor (minicontactor) was developed and used at Argonne National Laboratory for laboratory-scale testing of solvent extraction flowsheets. This new contactor requires only 1 L of simulated waste feed, which is significantly less than the 10 L required for the 4-cm unit that had previously been used. In addition, the volume requirements for the other aqueous and organic feeds are reduced correspondingly. This paper (1) discusses the design of the minicontactor, (2) describes results from having applied the minicontactor to testing various solvent extraction flowsheets, and (3) compares the minicontactor with the 4-cm contactor as a device for testing solvent extraction flowsheets on a laboratory scale.

Leonard, R.A.; Chamberlain, D.B.; Conner, C.

1995-12-31T23:59:59.000Z

231

Step-wise supercritical extraction of carbonaceous residua  

DOE Patents (OSTI)

A method of fractionating a mixture containing high boiling carbonaceous material and normally solid mineral matter which includes processing with a plurality of different supercritical solvents is described. The mixture is treated with a first solvent of high critical temperature and solvent capacity to extract a large fraction as solute. The solute is released as liquid from solvent and successively treated with other supercritical solvents of different critical values to extract fractions of differing properties. Fractionation can be supplemented by solute reflux over a temperature gradient, pressure let down in steps and extractions at varying temperature and pressure values.

Warzinski, R.P.

1986-05-15T23:59:59.000Z

232

Approaches for regeneration of amine-carboxylic acid extracts  

Science Conference Proceedings (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

233

Bidentate organophosphorus solvent extraction process for actinide recovery and partition  

DOE Patents (OSTI)

A liquid-liquid extraction process for the recovery and partitioning of actinide values from acidic nuclear waste aqueous solutions, the actinide values including trivalent, tetravalent and hexavalent oxidation states is provided and includes the steps of contacting the aqueous solution with a bidentate organophosphorous extractant to extract essentially all of the actinide values into the organic phase. Thereafter the respective actinide fractions are selectively partitioned into separate aqueous solutions by contact with dilute nitric or nitric-hydrofluoric acid solutions. The hexavalent uranium is finally removed from the organic phase by contact with a dilute sodium carbonate solution.

Schulz, Wallace W. (Richland, WA)

1976-01-01T23:59:59.000Z

234

Selective Extraction of Uranium from Liquid or Supercritical Carbon Dioxide  

SciTech Connect

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

235

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

SciTech Connect

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

236

Parallel algorithms for inductance extraction of VLSI circuits  

Science Conference Proceedings (OSTI)

Inductance extraction involves estimating the mutual inductance in a VLSI circuit. Due to increasing clock speed and diminishing feature sizes of modern VLSI circuits, the effects of inductance are increasingly felt during the testing and verification ...

Hemant Mahawar; Vivek Sarin

2006-04-01T23:59:59.000Z

237

Innovative Drying Technology Extracts More Energy from High Moisture Coal |  

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

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

238

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

239

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

240

High-pressure solvent extraction of methane from geopressured fluids  

DOE Green Energy (OSTI)

Solvent extraction is propsed as a means of recovering dissolved methane from geopressured-geothermal brines at high pressures. Our assessment shows that additional investment in a high pressure solvent extraction plant preceding direct injection disposal of brines into isolated aquifers can be profitable. The technical and economic issues are discussed and compared with other injection methods such as complete depressurization for methane recovery followed by conventional mechanical pumping. The contributions of hydraulic (pressure) energy recovery and geothermal power production are also assessed. As a first step in the evaluation of solvent extraction, the solubilities of a promising solvent candidate, n-hexadecane, and a potential low cost solvent, No. 2 Diesel fuel, were measured in 15 wt % NaCl solutions at temperatures up to 150/sup 0/C. Preliminary results of initial extraction tests at 150/sup 0/C and 1000 psi in sub-pilot scale equipment are also presented.

Quong, R.; Otsuki, H.H.; Locke, F.E.; Netherton, R.

1981-08-01T23:59:59.000Z

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.


241

Chiral Separation by Enantioselective Liquid-Liquid Extraction  

E-Print Network (OSTI)

systems for TFSS is the molten salt extraction system. The component units are centrifugal contactors needed to achieve 1 wppm, at a distribution coefficient of 1, consists of sixteen contactor units

Groningen, Rijksuniversiteit

242

Joint extraction of entities and relations for opinion recognition  

Science Conference Proceedings (OSTI)

We present an approach for the joint extraction of entities and relations in the context of opinion recognition and analysis. We identify two types of opinion-related entities --- expressions of opinions and sources of opinions --- along with the linking ...

Yejin Choi; Eric Breck; Claire Cardie

2006-07-01T23:59:59.000Z

243

2000 TMS Fall Extraction and Process Metallurgy Meeting: Hertz ...  

Science Conference Proceedings (OSTI)

2000 TMS Fall Extraction and Process Metallurgy Meeting: Hertz Rent-a-Car ... Hertz has been selected as the official car rental company for the Lead-Zinc 2000 ...

244

Resource Extraction, Backstop Technologies, and Growth ? Preliminary Version  

E-Print Network (OSTI)

We incorporate a non-renewable resource in a standard framework of endogenous growth through expanding varieties. Moreover, we allow for a backstop technology that is able to produce a perfect substitute for the resource. Our model is used to analyze resource extraction and technological progress over time. Three consecutive regimes of energy use can emerge in the economy: only resource extraction, simultaneous use, and complete reliance on the backstop technology. The introduction of the backstop technology crucially affects the time paths of fossil fuel extraction and technological progress. We provide conditions under which either peak-oil emerges, or the extraction path is monotonically increasing or decreasing until exhaustion of the resource stock. The rate of technological progress is non-monotonic over time: it declines initially, starts increasing when the economy approaches the regime change and jumps down once the resource stock is exhausted.

Gerard Van Der Meijden; Sjak Smulders

2013-01-01T23:59:59.000Z

245

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

246

Place in perspective: extracting online information about points of interest  

Science Conference Proceedings (OSTI)

During the last few years, the amount of online descriptive information about places has reached reasonable dimensions for many cities in the world. Being such information mostly in Natural Language text, Information Extraction techniques are needed ...

Ana O. Alves; Francisco C. Pereira; Filipe Rodrigues; Joo Oliveirinha

2010-11-01T23:59:59.000Z

247

Oil Extraction and Analysis: Critical Issues and Comparative Studies  

Science Conference Proceedings (OSTI)

This book contains papers from the symposium Critical Issues, Current and Emerging Technologies for Determination of Crude Fat Content in Food, Feed, and Seeds. Oil Extraction and Analysis: Critical Issues and Comparative Studies Processing agricultura

248

Re-examining automatic keyphrase extraction approaches in scientific articles  

Science Conference Proceedings (OSTI)

We tackle two major issues in automatic keyphrase extraction using scientific articles: candidate selection and feature engineering. To develop an efficient candidate selection method, we analyze the nature and variation of keyphrases and ...

Su Nam Kim; Min-Yen Kan

2009-08-01T23:59:59.000Z

249

Supercritical fluid-based extraction/processing: then and now  

Science Conference Proceedings (OSTI)

An expert in supercritical fluid technologies reviews past, present, and future developments in this field as they relate to lipids. Supercritical fluid-based extraction/processing: then and now Inform Magazine Inform Archives Processing Jerry W. King

250

Business Specific Online Information Extraction from German Websites  

Science Conference Proceedings (OSTI)

This paper presents a system that uses the domain name of a German business website to locate its information pages (e.g. company profile, contact page, imprint) and then identifies business specific information. We therefore concentrate on the extraction ...

Yeong Su Lee; Michaela Geierhos

2009-02-01T23:59:59.000Z

251

Topic Extraction from Text Documents Using Multiple-Cause Networks  

Science Conference Proceedings (OSTI)

This paper presents an approach to the topic extraction from text documents using probabilistic graphical models. Multiple-cause networks with latent variables are used and the Helmholtz machines are utilized to ease the learning and inference. The learning ...

Jeong-Ho Chang; Jae Won Lee; Yuseop Kim; Byoung-Tak Zhang

2002-08-01T23:59:59.000Z

252

Extracting Envelopes of Nonzonally Propagating Rossby Wave Packets  

Science Conference Proceedings (OSTI)

Previously developed techniques that have been used to extract envelopes of Rossby wave packets are based on the assumption of zonally propagating waves. In this note a method that does not require such an assumption is proposed. The advantages ...

Aleksey V. Zimin; Istvan Szunyogh; Brian R. Hunt; Edward Ott

2006-04-01T23:59:59.000Z

253

2011 Short CourseNew Technologies in Oilseed Extraction and Edible Oil Refining  

Science Conference Proceedings (OSTI)

New Technologies in Oilseed Extraction and Edible Oil Refining ShortCourse held at the 102nd AOCS Annual Meeting and Expo. 2011 Short CourseNew Technologies in Oilseed Extraction and Edible Oil Refining New Technologies in Oilseed Extraction

254

2010 Short Course New Technologies in Oilseed Extraction and Edible Oil Refining  

Science Conference Proceedings (OSTI)

New Technologies in Oilseed Extraction and Edible Oil Refining Short Course held at the 101st AOCS Annual Meeting and Expo. 2010 Short Course New Technologies in Oilseed Extraction and Edible Oil Refining New Technologies in Oilseed Extraction and

255

EXTRACTION SYSTEMS OF A HIGH-FREQUENCY PROTON SOURCE  

SciTech Connect

Experiments were carried out to determine the most convenient shape of the extraction system for a highfrequency ion source. An aluminum probe surrounded by a quartz tube was chosen as the extraction system. The effects of height, cross section, and shape were studied. Channels with the shape of the beam spreading under the influence of the space charge and with a combination of this shape and a cup shape were found to be most suitable. (M.C.G.)

Prelec, K.

1963-01-01T23:59:59.000Z

256

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

257

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

258

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

259

Process for separation of the rare earths by solvent extraction  

DOE Patents (OSTI)

Production rates for solvent extraction separation of the rare earths and yttrium from each other can be improved by the substitution of di(2-ethylhexyl) mono-thiophosphoric acid for di(2-ethylhexyl) phosphoric acid. The di(2-ethylhexyl) mono-thiophosphoric acid does not form an insoluble polymer at approximately 50% saturation as does the former extractant, permitting higher feed solution concentration and thus greater throughput.

Mason, George W. (Clarendon Hills, IL); Lewey, Sonia (Joliet, IL)

1977-04-05T23:59:59.000Z

260

Solvent Extraction for Remediation of Manufactured Gas Plant Sites  

Science Conference Proceedings (OSTI)

EPRI has assessed the feasibility of using a solvent extraction process to remove coal tar from the subsurface or to treat contaminated soil excavated from manufactured gas plant (MGP) sites. The assessment indicates that in situ solvent extraction may recover a significant amount of tar from the subsurface within a reasonable timeframe, provided subsurface conditions are conducive to process implementation. This work will help utilities searching for cost-effective technologies to remediate MGP sites.

1993-02-18T23:59:59.000Z

Note: This page contains sample records for the topic "dpe dual-phase extraction" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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261

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

262

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

263

Advanced Extraction Methods for Actinide/Lanthanide Separations  

SciTech Connect

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

264

Practical Handbook of Soybean Processing and UtilizationChapter 6 Extraction  

Science Conference Proceedings (OSTI)

Practical Handbook of Soybean Processing and Utilization Chapter 6 Extraction Processing eChapters Processing AOCS Press Downloadable pdf of Chapter 6 Extraction from ...

265

Steady-state growth in a Hotelling model of resource extraction  

E-Print Network (OSTI)

depths. For oil, greater extraction cost goes hand-in-handin the marginal cost of oil extraction. The correspondingprice, and cost data for 14 subsoil assets: oil, natural

Lin, C.-Y. Cynthia; Wagner, Gernot

2007-01-01T23:59:59.000Z

266

Expropriation Risk and Natural Resource Extraction: A Matter of Capital Intensity.  

E-Print Network (OSTI)

??This thesis investigates how the extraction of natural resources is affected by expropriation risk. Conventional Hotelling-type theory suggests that extraction rates will increase when companies (more)

Olsen, Eivind Hammersmark

2013-01-01T23:59:59.000Z

267

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

268

Air extraction in gas turbines burning coal-derived gas  

SciTech Connect

In the first phase of this contracted research, a comprehensive investigation was performed. Principally, the effort was directed to identify the technical barriers which might exist in integrating the air-blown coal gasification process with a hot gas cleanup scheme and the state-of-the-art, US made, heavy-frame gas turbine. The guiding rule of the integration is to keep the compressor and the expander unchanged if possible. Because of the low-heat content of coal gas and of the need to accommodate air extraction, the combustor and perhaps, the flow region between the compressor exit and the expander inlet might need to be modified. In selecting a compressed air extraction scheme, one must consider how the scheme affects the air supply to the hot section of the turbine and the total pressure loss in the flow region. Air extraction must preserve effective cooling of the hot components, such as the transition pieces. It must also ensure proper air/fuel mixing in the combustor, hence the combustor exit pattern factor. The overall thermal efficiency of the power plant can be increased by minimizing the total pressure loss in the diffusers associated with the air extraction. Therefore, a study of airflow in the pre- and dump-diffusers with and without air extraction would provide information crucial to attaining high-thermal efficiency and to preventing hot spots. The research group at Clemson University suggested using a Griffith diffuser for the prediffuser and extracting air from the diffuser inlet. The present research establishes that the analytically identified problems in the impingement cooling flow are factual. This phase of the contracted research substantiates experimentally the advantage of using the Griffith diffuser with air extraction at the diffuser inlet.

Yang, Tah-teh; Agrawal, A.K.; Kapat, J.S.

1993-11-01T23:59:59.000Z

269

Extraction of erythropoietin from normal kidneys. [Rats, dogs  

SciTech Connect

Significant amounts of active erythropoietin were extracted from the kidneys of normal rats, cattle, dogs, and rabbits by homogenization of the organs in 0.1 M phosphate buffer. The mean erythropoietin activities of the extracts, as determined by the starved-rat assay, were 0.26 U/g beef kidney, 0.41 U/g dog kidney, and 0.11 U/g rat kidney. The dog kidney extracts had a mean activity of 0.35 U/g, as measured by stimulation of hemoglobin synthesis in cultured bone marrow cells (in vitro assay) and produced a dose-dependent stimulation of /sup 59/Fe incorporation into circulating red cells when assayed in polycythemic mice. Extracts of rabbit kidney cortices had a mean activity of 2.12 U/g, as measured by stimulation of hemoglobin synthesis in cultured bone marrow cells. When the dog kidney homogenate was fractionated on DEAE-cellulose, all of the erythropoietin activity was adsorbed to the exchanger in the presence of 0.01 M acetate buffer, pH 4.5, and was completely eluted by 0.1 M Na/sub 2/HPO/sub 4/-0.5 M NaCl, pH 8. An antibody made aganist human urinary erythropoietin completely inactivated the erythropoietic factor in the dog kidney extract. Serum from a donor dog had no erythropoietin activity when assayed in the starved rat, suggesting that the factor in the extracts is intracellular erythropoietin rather than that contained in plasma trapped in the renal vasculature. The complete inactivation of the erythropoietic factor in these kidney homogenates by antierythropoietin and its behavior on DEAE-cellulose indicate that this factor is structurally similar to native plasma erythropoietin. The extracts are completely active without being incubated in the presence of serum.

Sherwood, J.B.; Goldwasser, E.

1978-09-01T23:59:59.000Z

270

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

271

Parameter extraction from I-V characteristics of PV devices  

Science Conference Proceedings (OSTI)

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

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

2011-01-15T23:59:59.000Z

272

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

SciTech Connect

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

273

Technology and Innovation, Vol. 13, pp. 175199, 2011 1949-8241/11 $90.00 + .00 Printed in the USA. All rights reserved. DOI: 10.3727/194982411X13085939956625  

E-Print Network (OSTI)

environmental assessment EBR Environmental Baseline Report EIS environmental impact statement EM environmental IDPE interim dual-phase extraction IR interaction region INL Idaho National Laboratory ISEMS integrated by rule PBVs parameter benchmark values PCB polychlorinated biphenyl PCGs Preliminary Cleanup Goals p

Hubbard, Susan

274

Rules and Regulations Governing Leasing for Production or Extraction of  

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

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

275

Continuous extraction of molten chloride salts with liquid cadmium alloys  

Science Conference Proceedings (OSTI)

A pyrochemical method is being developed at Argonne National Laboratory (ANL) to provide contnuous multistage extractions between molten chloride salts and liquid cadmium alloys at 500{degrees}C. The extraction method will be used to recover transuranic (TRU) elements from the process salt in the electroretiner used in the pyrochemical reprocessing of spent fuel from the Integral Fast Reactor (IFR). The IFR is one of the Department of Energy`s advanced power reactor concepts. The recovered TRU elements are returned to the electrorefiner. The extracted salt undergoes further processing to remove rare earths and other fission products so that most of the purified salt can also be returned to the electrorefiner, thereby extending the useful life of the process salt many times.

Chow, L.S.; Basco, J.K.; Ackerman, J.P.; Johnson, T.R.

1993-09-01T23:59:59.000Z

276

Management of water extracted from carbon sequestration projects  

SciTech Connect

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

277

Refining Event Extraction Through Cross-document Inference  

E-Print Network (OSTI)

We apply the hypothesis of One Sense Per Discourse (Yarowsky, 1995) to information extraction (IE), and extend the scope of discourse from one single document to a cluster of topically-related documents. We employ a similar approach to propagate consistent event arguments across sentences and documents. Combining global evidence from related documents with local decisions, we design a simple scheme to conduct cross-document inference for improving the ACE event extraction task 1. Without using any additional labeled data this new approach obtained 7.6% higher F-Measure in trigger labeling and 6% higher F-Measure in argument labeling over a state-of-the-art IE system which extracts events independently for each sentence. 1

Heng Ji; Ralph Grishman

2008-01-01T23:59:59.000Z

278

Characterization of carbonaceous materials using extraction with supercritical pentane  

Science Conference Proceedings (OSTI)

The use of carbonaceous adsorbents is limited by irreversible adsorption of some compounds so the use of supercritical pentane as an extracting solvent was examined. Carbon black appeared to be broken down slowly, but continuously, by the penane. To see if other types of carbon behaved similarly, high purity graphite, technical grade graphites, active carbons, and charcoals were examined. The extracts were characterized by uv spectroscopy, packed column chromatography using flame ionization and flame photometric detectors, and capillary GC/MS. The extracts were characteristic for each class of carbonaceous material. The high purity graphite yielded large, polycyclic aromatic compounds; the technical grade graphites yielded alkanes and alkyl-substituted benzenes and naphthalenes; the active carbons yielded alkanes, dienes, and small amounts of alkyl-substituted benzenes; and the charcoals yielded almost entirely alkanes in small amounts.

Fetzer, J.C.; Graham, J.A.; Arrendale, R.R.; Klee, M.S.; Rogers, L.B.

1980-05-30T23:59:59.000Z

279

Method for improving the extraction properties of a tributyl phosphate solution  

DOE Patents (OSTI)

A method for improving the extraction properties of a tributyl phosphate extractant used for reprocessing irradiated nuclear reactor fuel (Purex Process) containing degradation products of tributyl phosphate by contacting the extractant with diazomethane in a suitable solvent whereby the degradation products are esterified to triester phosphates which have extraction properties similar to those of tributyl phosphate.

Martin, Earl C. (Richland, WA); Bruns, Lester E. (Kennewick, WA)

1976-01-01T23:59:59.000Z

280

a review of 2 Shale gas extraction in the UK: a review of hydraulic fracturing  

E-Print Network (OSTI)

Shale gas extraction in the UK: a review of hydraulic fracturing June 2012 #12;2 Shale gas extraction in the UK: a review of hydraulic fracturing This document can be viewed online at: royalsociety.org/policy/projects/shale-gas-extraction and raeng.org.uk/shale Shale gas extraction in the UK: a review of hydraulic fracturing Issued: June 2012

Rambaut, Andrew

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

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

282

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

283

Fractured geothermal reservoir growth induced by heat extraction  

DOE Green Energy (OSTI)

Field testing of a hydraulically-stimulated, hot dry rock geothermal system at the Fenton Hill site in northern New Mexico has indicated that significant reservoir growth occurred as energy was extracted. Tracer, microseismic, and geochemical measurements provided the primary quantitative evidence for documenting the increases in accessible reservoir volume and fractured rock surface area that were observed during energy extraction operations which caused substantial thermal drawdown in portions of the reservoir. These temporal increases suggest that augmentation of reservoir heat production capacity in hot dry rock systems may be possible.

Tester, J.W.; Murphy, H.D.; Grigsby, C.O.; Robinson, B.A.; Potter, R.M.

1986-01-01T23:59:59.000Z

284

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

285

Extraction process for removing metallic impurities from alkalide metals  

DOE Patents (OSTI)

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

Royer, L.T.

1987-03-20T23:59:59.000Z

286

Web data extraction for business intelligence: the lixto approach  

E-Print Network (OSTI)

Abstract: Knowledge about market developments and competitor activities on the market becomes more and more a critical success factor for enterprises. The World Wide Web provides public domain information which can be retrieved for example from Web sites or online shops. The extraction from semi-structured information sources is mostly done manually and is therefore very time consuming. This paper describes how public information can be extracted automatically from Web sites, transformed into structured data formats, and used for data analysis in Business Intelligence systems.

Robert Baumgartner; Oliver Frlich; Georg Gottlob; Patrick Harz; Marcus Herzog; Peter Lehmann; Tu Wien

2005-01-01T23:59:59.000Z

287

Supercritical Fluid Extraction Applications in the Process Industries  

E-Print Network (OSTI)

Supercritical fluid extraction (SFE), a separations technique, has recently attracted the attention of the process industries. SFE is based on the observation that a fluid exhibits enhanced solvating ability when compressed at temperatures near its critical temperature to pressures greater than its critical pressure. This extraction process can, under certain circumstances, offer economic advantages comparable to those of conventional separation techniques. Several commercial supercritical processes are currently in operation in the United States and Europe, and new industrial applications are emerging. In this paper, the current and future applications of supercritical fluid technology and the prospects for implementing an SFE operation on an industrial scale are reviewed.

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

1985-05-01T23:59:59.000Z

288

Molten salt/metal extractions for recovery of transuranic elements  

SciTech Connect

The integral fast reactor (EFR) is an advanced reactor concept that incorporates metallic driver and blanket fuels, an inherently safe, liquid-sodium-cooled, pool-type, reactor design, and on-site pyrochemical reprocessing (including electrorefining) of spent fuels and wastes. This paper describes a pyrochemical method that is being developed at Argonne National Laboratory to recover transuranic elements from the EFR electrorefiner process salt. The method uses multistage extractions between molten chloride salts and cadmium metal at high temperatures. The chemical basis of the salt extraction method, the test equipment, and a test plan are discussed.

Chow, L.S.; Basco, J.K.; Ackerman, J.P.; Johnson, T.R.

1992-01-01T23:59:59.000Z

289

Molten salt/metal extractions for recovery of transuranic elements  

SciTech Connect

The integral fast reactor (EFR) is an advanced reactor concept that incorporates metallic driver and blanket fuels, an inherently safe, liquid-sodium-cooled, pool-type, reactor design, and on-site pyrochemical reprocessing (including electrorefining) of spent fuels and wastes. This paper describes a pyrochemical method that is being developed at Argonne National Laboratory to recover transuranic elements from the EFR electrorefiner process salt. The method uses multistage extractions between molten chloride salts and cadmium metal at high temperatures. The chemical basis of the salt extraction method, the test equipment, and a test plan are discussed.

Chow, L.S.; Basco, J.K.; Ackerman, J.P.; Johnson, T.R.

1992-09-01T23:59:59.000Z

290

Antimicrobial activities of saponin-rich guar meal extract  

E-Print Network (OSTI)

Three saponin-rich extracts (20, 60, 100% methanol), four 100% methanol subfractions and seven independently acquired fractions (A-G) from guar meal, Cyamopsis tetragonoloba L. (syn. C. psoraloides), were evaluated for antimicrobial and hemolytic activities. These activities were compared against quillaja bark (Quillaja saponaria), yucca (Yucca schidigera), and soybean (Glycine max) saponins in 96-well plates using eight concentrations (0.01 to 1.0 and 0.1 to 12.5 mg extract/mL). Initial guar meal butanol extract was 4.8 0.6% of the weight of original material dry matter (DM). Butanol extract was purified by preparative reverse-phase C-18 chromatography. Two fractions eluted with 20, and one each with 60, and 100% methanol with average yields of 1.72 0.47, 0.88 0.16, 0.91 0.16 and 1.55 0.15% of DM, respectively. Further purification of the 100% methanol fraction using normal-phase silica gel preparatory high pressure liquid chromatography eluted 4 peaks at 16, 39, 44 and 46 min. Only the 100% methanol fraction, its 16 min peak, F and G fractions, and quillaja saponin, exhibited both hemolytic and antibacterial activities against Staphylococcus aureus, Salmonella Typhimurium and E. coli, but 20 and 60% methanol fractions stimulated Lactobacillus spp. growth. Guar meal (0 or 5%) was added to diets fed to chicks from 1 to 21 days of age. Chicks fed both diets were unchallenged or challenged with 5 x 103 Eimeria tenella sporulated oocysts at 10 days. Guar meal diets reduced oocysts shed per gram of feces, body weight, and feed efficiency. Adding 2.5% guar meal, 1% guar gum, or 0.125% saponin-rich guar meal extract to diets fed to chicks to 21 days of age showed that guar meal increased the cfu concentrations of digesta more than controls following a challenge with 107 cfu of Clostridium perfringens at 14 days. Body weights of chicks fed guar meal and saponin-rich extract were significantly lower than control body weights at 21 days of age, whereas the weekly feed to gain ratio of chicks fed saponin-rich extract was higher than controls. Guar meal reduced severity of Eimeria tenella infection and guar saponin-rich extract exhibited antimicrobial activity against several common poultry pathogens.

Hassan, Sherif Mohamed

2008-05-01T23:59:59.000Z

291

Rapid automatic keyword extraction for information retrieval and analysis  

SciTech Connect

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

292

Querying for Feature Extraction and Visualization in Climate Modeling  

SciTech Connect

The ultimate goal of data visualization is to clearly portray features relevant to the problem being studied. This goal can be realized only if users can effectively communicate to the visualization software what features are of interest. To this end, we describe in this paper two query languages used by scientists to locate and visually emphasize relevant data in both space and time. These languages offer descriptive feedback and interactive refinement of query parameters, which are essential in any framework supporting queries of arbitrary complexity. We apply these languages to extract features of interest from climate model results and describe how they support rapid feature extraction from large datasets.

Johnson, C. Ryan [University of Tennessee, Knoxville (UTK); Glatter, Markus [University of Tennessee, Knoxville (UTK); Kendall, Wesley [University of Tennessee, Knoxville (UTK); Huang, Jian [University of Tennessee, Knoxville (UTK); Hoffman, Forrest M [ORNL

2009-01-01T23:59:59.000Z

293

Magma energy extraction - Annual Report for FY88  

SciTech Connect

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

Dunn, J.C. (ed.)

1989-08-01T23:59:59.000Z

294

Variations in the solvent extraction behavior of bifunctional phosphorus-based compounds modified with TBP  

SciTech Connect

The solvent extraction of americium from nitric acid by several modified bifunctional extractants in CCl/sub 4/ has been investigated. For all the compounds examined, addition of a modifier such as tributylphosphate (TBP) enhances distribution ratios at high aqueous acidities. The effect of the modifier at lower acidities varies depending on the basicity of the bifunctional extractant. While the most basic extractants show significantly reduced distribution ratios from lower acid solutions upon TBP addition, for the less basic compounds only slight reductions or, in some cases, even moderate increases in extraction are observed. Studies of the effect of modifier basicity on extraction behavior with modifiers fall within the range of variations observed for diluent effects with extractants of this type. Increases in high acid distribution ratios upon TBP addition to an extractant as simple as trioctylphophine oxide indicate that this modification of extraction behavior may be of general use for a wide range of neutral extractants. 21 references, 3 figures, 1 table.

Kalina, D.G.; Horwitz, E.P.

1985-01-01T23:59:59.000Z

295

Caustic-Side Solvent Extraction Full-Scale Test  

Science Conference Proceedings (OSTI)

A Full-Scale Test (FST) program was performed by Parsons and its team members General Atomics and Energy Solutions to assess the performance of full-scale centrifugal contactors specified for the Department of Energy Salt Waste Processing Facility (SWPF). The SWPF, to be located at the Savannah River Site (SRS) in Aiken, South Carolina, will remove highly radioactive waste constituents, principally actinides, strontium (Sr), and cesium (Cs) radionuclides, from salt waste solutions currently stored in SRS high-level waste tanks. Caustic-side Solvent Extraction (CSSX) removes Cs from waste feed that has been treated upstream to remove actinides and Sr. CSSX uses a custom solvent to extract Cs from the salt solution in a series of single stage centrifugal contactors. The test system comprised (a) eleven 25.4 cm (10'') full-scale contactors (versus 36 in SWPF) for the extraction, scrub, strip, and wash stages; (b) two solvent recovery coalescers; and (c) the associated hardware and control system, packaged in four skid mounted modules. This paper describes the results of tests performed to define both hydraulic performance parameters (maximum hydraulic capacity and phase carryover) and solvent extraction performance parameters (Cs mass transfer efficiencies) using simulated SWPF waste and actual CSSX solvent. The test results confirmed key design features of the CSSX process and, as a consequence, the use of CSSX in the SWPF. In conclusion: Total throughput was initially limited to 85% of maximum flow during FST. Minor system modifications performed prior to mass transfer testing series resulted in the realization of 100% throughput. The 100% flow equates to slightly more than 35.6 x 10{sup 6} L/yr (9.4 Mgal/yr) of waste processed in SWPF which is anticipated to be the peak plant throughput. To achieve the best hydraulic performance in extraction, it is recommended that the extraction contactors be operated at the highest reasonable speed possible (>2100 rpm). Vibration, hardware limitations, bearing life, and other factors should be considered prior to final selection of extraction contactor speeds in SWPF. In strip (also scrub and wash) aqueous carryover decreased and organic carryover increased as the rotor speeds increased. It is recommended that the strip, scrub, and wash contactors be operated at intermediate speeds (between 1500 and 2100 rpm) to achieve a performance compromise between aqueous and organic carryover. Curved-vane bottom plates showed a significant hydraulic performance (aqueous and organic carryover) advantage over straight-vane bottom plates in extraction. There was no significant mass transfer performance advantage for either plate type in extraction. Thus, curved-vane bottom plates in extraction may be the better option for use in SWPF. There was no significant hydraulic performance difference between the plate types in strip. Straight-vanes provided significantly better mass transfer performance in strip compared to curved-vanes. Based solely on mass transfer performance, straight-vane bottom plates in the strip, scrub, and wash contactors are recommended for use in SWPF. Utilizing straight-vanes in the stripping section, the overall SWPF CSSX performance is expected to meet or exceed the target DF of 40,000 with minimum extraction D{sub Cs} of 10. (authors)

Lentsch, R.D.; Stephens, A.B. [General Atomics, San Diego, CA (United States); Bartling, K.E. [Parsons, Aiken, SC (United States); Singer, S.A. [Energy Solutions, Aiken, SC (United States)

2008-07-01T23:59:59.000Z

296

U-EXTRACTION--IMPROVEMENTS IN ELIMINATION OF Mo BY USE OF FERRIC ION  

DOE Patents (OSTI)

An improved solvent extraction process is described whereby U may be extracted by a water immiscible organic solvent from an aqueous solution of uranyl nitrate. It has been found that Mo in the presence of phosphate ions appears to form a complex with the phosphate which extracts along with the U. This extraction of Mo may be suppressed by providing ferric ion in the solution prior to the extraction step. The ferric ion is preferably provided in the form of ferric nitrate.

Clark, H.M.; Duffey, D.

1958-06-10T23:59:59.000Z

297

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

SciTech Connect

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

298

Reference metadata extraction using a hierarchical knowledge representation framework  

E-Print Network (OSTI)

Available online 28 September 2006 Abstract The integration of bibliographical information on scholarly The integration of bibliographical information on scholarly publications available on the Internet is an important framework that extracts important concepts from natural language texts [23,24]. As a general representation

Chu, Hao-hua

299

Extraction of cloud statistics from whole sky imaging cameras  

SciTech Connect

Computer codes have been developed to extract basic cloud statistics from whole sky imaging (WSI) cameras. This report documents, on an algorithmic level, the steps and processes underlying these codes. Appendices comment on code details and on how to adapt to future changes in either the source camera or the host computer.

Kegelmeyer, W.P. Jr.

1994-03-01T23:59:59.000Z

300

Synergetic extraction in systems with dicarbollide and bidentate phosphonate  

SciTech Connect

A process for the extraction of tervalent metal cations from 3 M HNO[sub 3] highly radioactive waste based on synergetic mixtures of dicarbollide with neutral organophosphonate (dibutyl diethylcarbamoylmethylene phosphonate) is proposed. Due to the great hydrophobicity of dicarbollide anion, the species ML[sub n[sup 3+

Rais, J.; Tachimori, S.; Selucky, P.; Kadlecova, L. (Nuclear Research Inst., Rez (Czechoslovakia))

1994-01-01T23:59:59.000Z

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

Discrimination of personal web pages by extracting subjective expressions  

Science Conference Proceedings (OSTI)

This paper presents a method for discriminating between personal and non-personal web pages. The method can support surveys of personal opinions about products and services. In the proposed method, subjective expressions are extracted from pages ... Keywords: document classification, films, movies, personal opinions, personal preferences, personal web pages, products, restaurants, subjective expressions, tourist destinations

Takahiro Hayashi; Koji Abe; Debabrata Roy; Rikio Onai

2009-05-01T23:59:59.000Z

302

RECOVERY OF METAL VALUES FROM AQUEOUS SOLUTIONS BY SOLVENT EXTRACTION  

DOE Patents (OSTI)

An organic solvent mixure is described for extracting actinides from aqueous solutions; the solvent mixture consists of from 10 to 25% by volume of tributyl phosphate and the remainder a chlorine-fluorine-substituted saturated hydrocarbon having two carbon atoms in the molecule.

Moore, R.L.

1959-09-01T23:59:59.000Z

303

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

304

SystemT: an algebraic approach to declarative information extraction  

Science Conference Proceedings (OSTI)

As information extraction (IE) becomes more central to enterprise applications, rule-based IE engines have become increasingly important. In this paper, we describe SystemT, a rule-based IE system whose basic design removes the expressivity and performance ...

Laura Chiticariu; Rajasekar Krishnamurthy; Yunyao Li; Sriram Raghavan; Frederick R. Reiss; Shivakumar Vaithyanathan

2010-07-01T23:59:59.000Z

305

Recovery of plutonium from molten salt extraction residues  

Science Conference Proceedings (OSTI)

Savannah River Laboratory (SRL), Savannah River Plant (SRP), and Rocky Flats Plant (RFP) are jointly developing a process to recover plutonium from molten salt extraction residues. These NaCl, KCl, MgCl/sub 2/ residues, which are generated in the pyrochemical extraction of /sup 241/Am from aged plutonium metal, contain up to 25 wt % dissolved PUCl/sub 3/ and up to 2 wt % AmCl/sub 3/. The objective is to develop a process to convert these residues to plutonium metal product and discardable waste. The first step of the conceptual process is to convert the actinides to a heterogenous scrub alloy with aluminum and magnesium. This step, performed at RFP, effectively separates the actinides from the bulk of the chloride. This scrub alloy will then be dissolved in a HNO/sub 3/-HF solution at SRP. Residual chloride will be removed by precipitation with Hg/sub 2/(NO/sub 3/)/sub 2/ followed by centrifugation. Plutonium and americium will be separated using the Purex solvent extraction process. The /sup 241/Am will be diverted to the solvent extraction waste stream where it can either be discarded to the waste farm or recovered. The plutonium will be finished via PuF/sub 3/ precipitation, oxidation to a mixture of PUF/sub 4/ and PuO/sub 2/, followed by reduction to plutonium metal with calcium.

Gray, L.W.; Holcomb, H.P.

1983-01-01T23:59:59.000Z

306

Treatment of biomass gasification wastewaters using liquid-liquid extraction  

DOE Green Energy (OSTI)

Pacific Northwest Laboratory (PNL) investigated liquid-liquid extraction as a treatment method for biomass gasification wastewaters (BGW). Distribution coefficients for chemical oxygen demand (COD) removal were determined for the following solvents: methylisobutyl ketone (MIBK), n-butyl acetate, n-butanol, MIBK/n-butyl acetate (50:50 vol), MIBK/n-butanol (50:50 vol), tri-butyl phosphate, tri-n-octyl phosphine oxide (TOPO)/MIBK (10:90 wt), TOPO/kerosene (10:90 wt), kerosene, and toluene. The best distribution coefficient of 1.3 was given by n-butanol. Chemical analysis of the wastewater by gas chromatography (GC) showed acetic acid and propionic acid concentrations of about 4000 mg/1. Methanol, ethanol, and acetone were identified in trace amounts. These five compounds accounted for 45% of the measured COD of 29,000 mg/1. Because of the presence of carboxylic acids, pH was expected to affect extraction of the wastewater. At low pH the acids should be in the acidic form, which increased extraction by MIBK. Extraction by n-butanol was increased at high pH, where the acids should be in the ionic form.

Bell, N.E.

1981-09-01T23:59:59.000Z

307

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

308

Automatic extraction of acronym definitions from the Web  

Science Conference Proceedings (OSTI)

Acronyms are widely used to abbreviate and stress important concepts. The discovery of the definitions associated to an acronym is an important matter in order to support language processing and knowledge-related tasks as information retrieval, ... Keywords: Acronyms, Information extraction, Web mining

David Snchez; David Isern

2011-04-01T23:59:59.000Z

309

Automatic Curve Extraction for Digitizing Rainfall Strip Charts  

Science Conference Proceedings (OSTI)

A method has been developed that largely automates the labor-intensive extraction work for large amounts of rainfall strip charts and paper rolls. The method consists of the following five basic steps: 1) scanning the charts and rolls to high-...

H. E. van Piggelen; T. Brandsma; H. Manders; J. F. Lichtenauer

2011-07-01T23:59:59.000Z

310

Management and analysis of Chinese database extracted knowledge  

Science Conference Proceedings (OSTI)

China is an arising country, not only economicaly, but also scientifically. Being aware of the day to day evolution of this emerging country implicates to be able to read the local news, in Chinese langage. In this article we propose to use classical ... Keywords: China, business intelligence, data mining, data warehouse, evolution, knowledge extraction, relational analysis

Nadge Gunec; Eloise Loubier; Ilhme Ghalamallah; Bernard Dousset

2008-09-01T23:59:59.000Z

311

Enantioselective Liquid-Liquid Extraction Centrifugal Contactor Separators  

E-Print Network (OSTI)

the use of centrifugal contactor separators (CCS) as a highly efficient method for continuous extraction.1 for the mixing and separation of the two phases in each stage in the cascade is the Annular Centrifugal Contactor,17 also known as the Centrifugal Contactor Separator (CCS) or CINC.18 The schematic representation

Groningen, Rijksuniversiteit

312

Face images feature extraction analysis for recognition in frequency domain  

Science Conference Proceedings (OSTI)

In this paper a novel technique to extract facial features for recognition in frequency domain using Discrete Fourier Transform (DFT) is presented. In pre processing phase facial tilt and varying image background challenges have been addressed to improve ... Keywords: DFT, dimension reduction, face recognition, facial tilt, image background, image decimation

M. Almas Anjum; M. Younus Javed

2006-08-01T23:59:59.000Z

313

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

314

Automatic extraction of function-behaviour-state information from patents  

Science Conference Proceedings (OSTI)

Patents contain a large quantity of technical information not available elsewhere and therefore very interesting for both academia and industry. The purpose of the research is to try to detect and extract information about the functions, the physical ... Keywords: Function-Behaviour-Structure, Patent informatics, Product development, Semantic elaboration

G. Fantoni, R. Apreda, F. Dell'Orletta, M. Monge

2013-08-01T23:59:59.000Z

315

Method for extracting lanthanides and actinides from acid solutions  

SciTech Connect

A process for the recovery of actinide and lanthanide values from aqueous acidic solutions with an organic extractant is patented. 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.

1985-10-22T23:59:59.000Z

316

Ontology-based information extraction for business intelligence  

Science Conference Proceedings (OSTI)

Business Intelligence (BI) requires the acquisition and aggregation of key pieces of knowledge from multiple sources in order to provide valuable information to customers or feed statistical BI models and tools. The massive amount of information available ... Keywords: business intelligence, cross-source entity coreference, ontology-based information extraction

Horacio Saggion; Adam Funk; Diana Maynard; Kalina Bontcheva

2007-11-01T23:59:59.000Z

317

A Laser-Wire System at the ATF Extraction Line  

Science Conference Proceedings (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 U. /Cockcroft Inst. Accel. Sci. Tech. /SLAC

2007-02-12T23:59:59.000Z

318

An integrated discriminative probabilistic approach to information extraction  

Science Conference Proceedings (OSTI)

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

Xiaofeng Yu; Wai Lam; Bo Chen

2009-11-01T23:59:59.000Z

319

CONSIDERING SHALE GAS EXTRACTION IN NORTH CAROLINA: LESSONS FROM OTHER  

E-Print Network (OSTI)

257 CONSIDERING SHALE GAS EXTRACTION IN NORTH CAROLINA: LESSONS FROM OTHER STATES SARAH K. ADAIR Carolina Geological Survey (NCGS) announced the existence of shale gas underlying the Deep and Dan River and the state legislature began to consider policy changes that would be necessary to develop the shale gas

Jackson, Robert B.

320

RESEARCH ON CARBON PRODUCTS FROM COAL USING AN EXTRACTIVE PROCESS  

SciTech Connect

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

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

Method for extracting lanthanides and actinides from acid solutions by modification of Purex solvent  

DOE Patents (OSTI)

A process has been developed for the extraction of multivalent lanthanide and actinide values from acidic waste solutions, and for the separation of these values from fission product and other values, which utilizes a new series of neutral bi-functional extractants, the alkyl(phenyl)-N, N-dialkylcarbamoylmethylphosphine oxides, in combination with a phase modifier to form an extraction solution. The addition of the extractant to the Purex process extractant, tri-n-butylphosphate in normal paraffin hydrocarbon diluent, will permit the extraction of multivalent lanthanide and actinide values from 0.1 to 12.0 molar acid solutions.

Horwitz, E.P.; Kalina, D.G.

1984-05-21T23:59:59.000Z

322

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

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

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

323

PROBER: Ad-Hoc Debugging of Extraction and Integration Pipelines  

E-Print Network (OSTI)

Complex information extraction (IE) pipelines assembled by plumbing together off-the-shelf operators, specially customized operators, and operators re-used from other text processing pipelines are becoming an integral component of most text processing frameworks. A critical task faced by the IE pipeline user is to run a post-mortem analysis on the output. Due to the diverse nature of extraction operators (often implemented by independent groups), it is time consuming and error-prone to describe operator semantics formally or operationally to a provenance system. We introduce the first system that helps IE users analyze pipeline semantics and infer provenance interactively while debugging. This allows the effort to be proportional to the need, and to focus on the portions of the pipeline under the greatest suspicion. We present a generic debugger for running post-execution analysis of any IE pipeline consisting of arbitrary types of operators. We propose an effective provenance model for IE pipelines which cap...

Sarma, Anish Das; Bohannon, Philip

2010-01-01T23:59:59.000Z

324

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

325

Preliminary considerations for extraction of thermal energy from magma  

DOE Green Energy (OSTI)

Simplified mathematical models are developed to describe the extraction of thermal energy from magma based on the concept of a counterflow heat exchanger inserted into the magma body. Analytical solutions are used to investigate influence of the basic variables on electric power production. Calculations confirm that the proper heat exchanger flow path is down the annulus with hot fluid returning to the surface through the central core. The core must be insulated from the annulus to achieve acceptable wellhead temperatures, but this insulation thickness can be quite small. The insulation is effective in maintaining the colder annular flow below expected formation temperatures so that a net heat gain from the formation above a magma body is predicted. The analyses show that optimum flow rates exist that maximize electric power production. These optimum flow rates are functions of the heat transfer coefficients that describe magma energy extraction. 15 refs., 3 figs.

Hickox, C.E.; Dunn, J.C.

1985-01-01T23:59:59.000Z

326

Strategies for the Characteristic Extraction of Gravitational Waveforms  

E-Print Network (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 $\\Psi_4$ 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 $\\Psi_4$ in terms of a conformally compactified treatment of null infinity. These methods are compared and calibrated in test problems based upon linearized waves.

M. C. Babiuc; N. T. Bishop; B. Szilagyi; J. Winicour

2008-08-06T23:59:59.000Z

327

Algal Lipid Extraction and Upgrading to Hydrocarbons Technology Pathway  

Science Conference Proceedings (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

328

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

329

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

330

Electron current extraction from a permanent magnet waveguide plasma cathode  

SciTech Connect

An electron cyclotron resonance plasma produced in a cylindrical waveguide with external permanent magnets was investigated as a possible plasma cathode electron source. The configuration is desirable in that it eliminates the need for a physical antenna inserted into the plasma, the erosion of which limits operating lifetime. Plasma bulk density was found to be overdense in the source. Extraction currents over 4 A were achieved with the device. Measurements of extracted electron currents were similar to calculated currents, which were estimated using Langmuir probe measurements at the plasma cathode orifice and along the length of the external plume. The influence of facility effects and trace ionization in the anode-cathode gap are also discussed.

Weatherford, B. R.; Foster, J. E. [University of Michigan, Ann Arbor, Michigan 48109 (United States); Kamhawi, H. [NASA Glenn Research Center, Cleveland, Ohio 44135 (United States)

2011-09-15T23:59:59.000Z

331

Extraction of tocopherols from deodorizer distillates: laboratory-scale evaluations  

E-Print Network (OSTI)

The tocopherols are valuable components of deodorizer distillate. Due to the limitations in the existing extraction methods, it is imperative that new processing parameters for extraction and concentration of tocopherols from deodorizer distillate be developed. For this purpose, an analytical method for the determination of both tocopherols and tocopherol succinates simultaneously was developed. Crystallization, flat-sheet membrane separation, and a combined process were evaluated. Individual steps of the combined process were defined. They were: 1). Crystallization of deodorizer distillate; 2). Succination; 3). Membrane separation; and 4). Second stage membrane separation. The succination process converted over 90% of the tocopherols to tocopherol succinates. Crystallization and flat-sheet membrane separations increased tocopherols concentration about 2% and 6%, respectively. The final tocopherols concentration in the combined process was twice that of the original tocopherol sample.

Zhang, Xiaoyan

1997-01-01T23:59:59.000Z

332

Heat Extraction Project, geothermal reservoir engineering research at Stanford  

DOE Green Energy (OSTI)

The main objective of the SGP Heat Extraction Project is to provide a means for estimating the thermal behavior of geothermal fluids produced from fractured hydrothermal resources. The methods are based on estimated thermal properties of the reservoir components, reservoir management planning of production and reinjection, and the mixing of reservoir fluids: geothermal, resource fluid cooled by drawdown and infiltrating groundwater, and reinjected recharge heated by sweep flow through the reservoir formation. Several reports and publications, listed in Appendix A, describe the development of the analytical methods which were part of five Engineer and PhD dissertations, and the results from many applications of the methods to achieve the project objectives. The Heat Extraction Project is to evaluate the thermal properties of fractured geothermal resource and forecasted effects of reinjection recharge into operating reservoirs.

Kruger, P.

1989-01-01T23:59:59.000Z

333

Methane extraction from geopressured-geothermal brine at wellhead conditions  

DOE Green Energy (OSTI)

Disposal of geopressured-geothermal brine effluents by injection is expected to be costly, even into shallow aquifers. If injection into the production reservoir becomes necessary to maintain productivity and to minimize subsidence, the injection pumping costs can become overwhelming. An option aimed at reducing injection pump operating costs is to maintain a higher than normal pressure at the production wellhead to reduce the injection pumping load. The crucial element, however, is that a significant portion of CH/sub 4/ remains in solution and must be recovered in order for the pressure maintenance option to be cost effective. A laboratory and field test capability has been established, and several methods for extracting dissolved CH/sub 4/ at high temperature and pressure are being evaluated. Solvent extraction and use of hydraulic motors or turbines coupled to CH/sub 4/ recovery systems are the leading candidate methods.

Quong, R.; Owen, L.B.; Locke, F.E.; Otto, C.H.; Netherton, R.; Lorensen, L.E.

1980-05-29T23:59:59.000Z

334

Extraction of Typographic Elements from Outline Representations of Fonts  

E-Print Network (OSTI)

Digital typefaces for computer graphics and multimedia applications must be capable of supporting operations such as font variations, transformations, deformations and blending. A powerful implementation of such operations must rely on the inherent typographic attributes of the typeface. However, even today's most advanced typeface representations support only geometric outline representations and basic font variations. In this paper we discuss high-level typeface representations which we term Parametric Typographic Representations (PTRs). We present an algorithm for automatically extracting typographic elements of typefaces from their outline representation, which is an essential initial step in converting typefaces from outline representations to PTRs. The extracted typographic elements include serifs, bars, stems, slants, bows, arcs, curve stems and curve bars. Most notable is the treatment of serifs, which are represented by finite-automata. The algorithm only needs to learn a ser...

Ariel Shamir; Ari Rappoport

1996-01-01T23:59:59.000Z

335

Answer extraction as sequence tagging with tree edit distance  

E-Print Network (OSTI)

Our goal is to extract answers from preretrieved sentences for Question Answering (QA). We construct a linear-chain Conditional Random Field based on pairs of questions and their possible answer sentences, learning the association between questions and answer types. This casts answer extraction as an answer sequence tagging problem for the first time, where knowledge of shared structure between question and source sentence is incorporated through features based on Tree Edit Distance (TED). Our model is free of manually created question and answer templates, fast to run (processing 200 QA pairs per second excluding parsing time), and yields an F1 of 63.3 % on a new public dataset based on prior TREC QA evaluations. The developed system is open-source, and includes an implementation of the TED model that is state of the art in the task of ranking QA pairs. 1

Xuchen Yao; Benjamin Van Durme; Chris Callison-burch; Peter Clark

2013-01-01T23:59:59.000Z

336

MEASUREMENTS OF THE COUPLING IMPEDANCE OF THE SNS EXTRACTION KICKERS.  

SciTech Connect

The Spallation Neutron Source (SNS) Accumulator ring extraction system includes 14 modules of ferrite kicker magnets with window-frame geometry. Among all ring components, the extraction kickers make the single largest contribution to the coupling impedance budget. A prototype was constructed and various design options impacting the transverse coupling impedance have been thoroughly studied. Bench as well as system measurements were performed to determine the benefits from an external circuit resistance, from using different ferrites material, and from adding a novel ferrite winding. The results presented in this paper confirm that a resistive termination in the external circuit yields a solution with sufficiently reduced transverse coupling impedance. In order to determine the total contribution of all modules, an equivalent circuit and a simple scaling law was derived from measurements of full and half size magnets.

DAVINO,D.; HAHN,H.; LEE,Y.Y.

2002-06-03T23:59:59.000Z

337

EPRI Coal Flow Loop: Evaluation of Extractive Methods  

Science Conference Proceedings (OSTI)

Extractive coal sampling methodologies are currently the principal method to estimate the flow of pulverized coal on the individual conveying lines of power boilers. The measurement uncertainty associated with the common methodologies is not well known. Parameters suspected to influence these types of measurement such as distance from flow disturbances, flow regime, and air-to-coal ratio, among others are difficult to control at a power plant. The Coal Flow Control and Measurement Laborat...

2005-03-24T23:59:59.000Z

338

EPRI Coal-Flow Loop: Evaluation of Extractive Methods - Addendum  

Science Conference Proceedings (OSTI)

Boiler performance and emissions are highly dependent on burner-to-burner fuel balancing. However, in full-scale boilers, most investigations in coal flow measurement and control work to date have been performed in relatively uncontrolled environments with largely inconsistent results. In addition, the uncertainty of extractive field measurements has not been well characterized from this field experience. Sampling errors resulting from either the nature of the flow or human error have not been quantified...

2006-10-30T23:59:59.000Z

339

Evidence for Complex Molecular Architectures for Solvent-Extracted Lignins  

DOE Green Energy (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

340

Evidence for Complex Molecular Architectures for Solvent-Extracted Lignins  

SciTech Connect

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

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

Language Specific Issue and Feature Exploration in Chinese Event Extraction  

E-Print Network (OSTI)

In this paper, we present a Chinese event extraction system. We point out a language specific issue in Chinese trigger labeling, and then commit to discussing the contributions of lexical, syntactic and semantic features applied in trigger labeling and argument labeling. As a result, we achieved competitive performance, specifically, F-measure of 59.9 in trigger labeling and F-measure of 43.8 in argument labeling. 1

Zheng Chen; Heng Ji

2009-01-01T23:59:59.000Z

342

Energy extraction characteristics of hot dry rock geothermal systems  

DOE Green Energy (OSTI)

The LASL Hot Dry Rock Geothermal Energy Project is investigating methods to extract energy at useful temperatures and rates from naturally heated crustal rock in locations where the rock does not spontaneously yield natural steam or hot water at a rate sufficient to support commercial utilization. Several concepts are discussed for application to low and high permeability formations. The method being investigated first is intended for use in formations of low initial permeability. It involves producing a circulation system within the hot rock by hydraulic fracturing to create a large crack connecting two drilled holes, then operating the system as a closed pressurized-water heat-extration loop. With the best input assumptions that present knowledge provides, the fluid-flow and heat-exchange calculations indicate that unpumped (buoyant) circulation through a large hydraulic fracture can maintain a commercially useful rate of heat extraction throughout a usefully long system life. With a power cycle designed for the temperature of the fluid produced, total capital investment and generating costs are estimated to be at least competitive with those of fossil-fuel-fired and nuclear electric plants. This paper discusses the potential of the hot dry rock resource, various heat extraction concepts, prediction of reservoir performance, and economic factors, and summarizes recent progress in the LASL field program.

Tester, J.W.; Smith, M.C.

1977-01-01T23:59:59.000Z

343

ROSE Process Offers Energy Savings for Solvent Extraction  

E-Print Network (OSTI)

Kerr-McGee has developed and commercialized an energy-efficient solvent extraction process known as ROSE (Residuum Oil Supercritical Extraction) in which the extraction solvent is recovered as a supercritical fluid. The energy requirement for supercritical solvent recovery is substantially lower than for conventional solvent processes using evaporation, compression and condensation. The ROSE technology is applicable to a wide variety of both organic and inorganic solvents. Energy savings of forty to fifty percent have been demonstrated commercially with ROSE compared to traditional solvent recovery. The dollar value of the savings is related to the solvent-to-feed ratio employed in the process and the cost of steam, fuel and electricity. Kerr-McGee has a bench scale pilot plant available for feedstock evaluation. Four commercial ROSE units and a large pilot plant have been placed into operation during the past five years. Two additional units are under construction and others are in various stages of design. This paper describes the ROSE process and illustrates its flexibility with respect to the types of feedstocks and variety of solvents which are utilized.

Gearheart, J. A.; Nelson, S. R.

1983-01-01T23:59:59.000Z

344

Sample extraction and injection with a microscale preconcentrator.  

SciTech Connect

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

345

Silica Extraction at the Mammoth Lakes Geothermal Site  

DOE Green Energy (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

346

Building Extraction using LiDAR DEMs and IKONOS Images  

E-Print Network (OSTI)

An automated method for boundary representation of building objects has been considered as a core processor for 3D city modelling. Since the reconstruction of generic building shape fundamentally depends on geometric features extracted from data sources, it suffers difficulties especially when a monocular imagery with high scene complexity is solely used. The research described in this paper aims to develop an automated method for building extraction, in which individual building object is localized and boundaries of polyhedral building shape are delineated with a less specific building model. The developed technique focuses on an exploitation of synergy of Ikonos imagery combined with a LIDAR DEM. Individual buildings are localized with rectangle polygon by a hierarchical segmentation of LIDAR DEM and Ikonos multi-spectral information. This polygon is recursively partitioned by linear features extracted from Ikonos image and LIDAR space, which results in a set of convex polygons. Only polygons comprising significant parts of building shape are verified and aggregated. Finally, polyhedral building shapes are reconstructed. Several results are presented with a discussion of evaluation and limitations of our method. 1.

G. Sohn; I. Dowman

2003-01-01T23:59:59.000Z

347

Nutritionally Enhanced Edible Oil and Oilseed ProcessingChapter 5 Enzyme-Aided Aqueous Extraction  

Science Conference Proceedings (OSTI)

Nutritionally Enhanced Edible Oil and Oilseed Processing Chapter 5 Enzyme-Aided Aqueous Extraction Processing eChapters Processing Press Downloadable pdf of Chapter 5 Enzyme-Aided Aqueous Extraction from the book

348

U.S. Natural Gas Total Liquids Extracted - State of Origin (Thousand...  

Gasoline and Diesel Fuel Update (EIA)

Total Liquids Extracted - State of Origin (Thousand Barrels) U.S. Natural Gas Total Liquids Extracted - State of Origin (Thousand Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

349

Computational Design Studies for an Ion Extraction System for a ''volume-type'' ECR Ion Source  

DOE Green Energy (OSTI)

Numerical studies have been performed for optimally extracting high-intensity, space-charged-limited multi-charged ion beams from an all-permanent-magnet, ''volume-type'' ECR ion source, equipped with a three-electrode extraction system. These studies clearly demonstrate the importance of being able to adjust the extraction gap in order to ensure high quality, minimum divergence (highly transportable) ion beams. Optimum extraction conditions are reached whenever the plasma meniscus has an optimum curvature for a given current density. Optimum perveance (optimum current) values are found to closely agree with those derived from elementary analytical theory for extraction of space-charge-dominated beams. Details of the electrode system design as well as angular divergence and RMS emittance versus extraction parameter data (e.g., perveance and extraction gap) are provided for ion beams of varying charge-state and mass, extracted under the influence of a mirror-geometry plasma confinement magnetic field.

Zaim, H.

2001-11-05T23:59:59.000Z

350

EXTRACTION OF TETRAVALENT PLUTONIUM VALUES WITH METHYL ETHYL KETONE, METHYL ISOBUTYL KETONE ACETOPHENONE OR MENTHONE  

DOE Patents (OSTI)

A process is described for extracting tetravalent plutonium from an aqueous acid solution with methyl ethyl ketone, methyl isobutyl ketone, or acetophenone and with the extraction of either tetravalent or hexavalent plutonium into menthone. (AEC)

Seaborg, G.T.

1961-08-01T23:59:59.000Z

351

Application of lanthanide-induced shifts in solution NMR studies of coordinated extractants. [Dibutylbutylphosphonate; butyldibutylphosphinate  

SciTech Connect

A NMR study was conducted to study the coordination of monofunctional extractants (TBP, dibutylbutylphosphonate, and butyldibutylphosphinate) and bifunctional extractants (DHDECMP). Pr, Eu, and Yb ions were used as solution structural probes. (DLC)

Kalina, D.G.; Horwitz, E.P.

1983-01-01T23:59:59.000Z

352

Proceedings of the Workshop on Multi-source Multilingual Information Extraction and Summarization  

Science Conference Proceedings (OSTI)

Information extraction (IE) and text summarization (TS) are key technologies aiming at extracting relevant information from texts and presenting the information to the user in a condensed form. The ongoing information explosion makes IE and TS particularly ...

Sivaji Bandyopadhyay; Thierry Poibeau; Horacio Saggion; Roman Yangarber

2008-08-01T23:59:59.000Z

353

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

354

Dependencies in formal mathematics: applications and extraction for coq and mizar  

Science Conference Proceedings (OSTI)

Two methods for extracting detailed formal dependencies from the Coq and Mizar system are presented and compared. The methods are used for dependency extraction from two large mathematical repositories: the Coq Repository at Nijmegen and the Mizar Mathematical ...

Jesse Alama; Lionel Mamane; Josef Urban

2012-07-01T23:59:59.000Z

355

Equilibrium and hydrodynamic studies of water extraction from fermentation broth  

E-Print Network (OSTI)

Previous studies using tertiary amines to extract water from reagent-grade carboxylate salts (calcium acetate, propionate, and butyrate) have shown selectivity for water and not for the carboxylate salts. These results allow the design of an extraction system to concentrate fermentation broth from a mixed culture of acid-forming microorganisms. To design the extraction system, equilibrium data from amine and actual fermentation broth systems were obtained. These data are similar to the data found previously for reagent-grade pure components. The data were manipulated to obtain graphs for the Ponchon-Savarit procedure used to design multi-stage extractors. Different cases were studied in which the feed was varied. A 3.8 wt% solution could be concentrated to 17.5 wt% using five countercurrent stripping stages; however, the recovery of carboxylate salts was poor (68 wt%) with this design. To overcome this, a reflux stream and an enriching section were employed. The Janecke procedure was followed to determine the member of equilibrium stages for the skipping and the enriching sections and their operating conditions. For this case, eight stages (two enriching and six stripping) were required to concentrate the carboxylate salts from an initial concentration of 3.8 up to 20 wt%. The salt recovery was 91%, the amine:water ratio was 2.5:1 and the reflux:feed ratio was 2.4:1. This design gives good results and will be implemented in a pilot plant. To study the separation of the organic and aqueous phases, a bench-scale mixer/settler extraction tank was designed and constructed. This apparatus had three sections: a mixing section to blend the two phases, a coalescence section in which the amine and water phases coalesce, and a decanting section in which the liquids completely separate. Several experiments were made to determine the hydrodynamic properties of the mixer/settler. The experiments showed that the apparatus is suitable to perform liquid-liquid extraction. Independent experiments were made using a coalesced apparatus to better analyze what occurs in the coalescing section. A model to describe the hydrodynamic of the liquid mixture in the coalesced apparatus was applied to the system giving good agreement with the experimental data.

Adorno-Gomez, Wilberto

1999-01-01T23:59:59.000Z

356

Extraction of niobium and tantalum isotopes using organophosphorus compounds -- Part II -- Extraction of 'carrier-free' concentrations from HCl/LiCl solutions  

DOE Green Energy (OSTI)

We have studied the extraction of niobium and tantalum from mixed hydrochloric acid/lithium chloride media by bis(2-ethylhexyl) hydrogen phosphate (HDEHP) and bis(2-ethylhexyl) hydrogen phosphite (BEHP) as a function of hydrogen ion (H+) concentration. The amount of niobium extracted by both HDEHP and BEHP decreased with increasing hydrogen ion concentration. Equilibrium with niobium occurred within 10 s at all hydrogen ion concentrations for both systems. For tantalum, the amount extracted increased until 6 - 9 M H+, before decreasing at higher H+ concentrations when extracted by both HDEHP and BEHP. Equilibrium occurred within 10 s at two H+ concentrations when extracted by HDEHP. The data obtained are used as the basis to discuss the speciation of Nb and Ta under the conditions studied and to evaluate possible extraction mechanisms.

Gates, J. M.; Stavsetra, L.; Sudowe, R.; Ali, M. N.; Calvert, M. G.; Dragojevic, I.; Dvorak, J.; Dvorakova, Z.; Ellison, P. A.; Garcia, M. A.; Gregorich, K. E.; Nelson, S. L.; Parsons-Moss, T.; Nitsche, H.

2008-12-01T23:59:59.000Z

357

Text Line Extraction Using Adaptive Partial Projection for Palm Leaf Manuscripts from Thailand  

Science Conference Proceedings (OSTI)

Text line extraction is one of the critical steps in document analysis and optical character recognition (OCR) systems. The purpose of this study is to address the problem of text line extraction of ancient Thai manuscripts written on palm leaves, using ... Keywords: line extraction, line segmentation, historical document, document analysis system

Rapeeporn Chamchong, Chun Che Fung

2012-09-01T23:59:59.000Z

358

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

Science Conference Proceedings (OSTI)

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

Toshiko Matsumoto; Mitsuharu Oba; Takashi Onoyama

2010-06-01T23:59:59.000Z

359

Building Outline Extraction from Digital Elevation Models Using Marked Point Processes  

Science Conference Proceedings (OSTI)

This work presents an automatic algorithm for extracting vectorial land registers from altimetric data in dense urban areas. We focus on elementary shape extraction and propose a method that extracts rectangular buildings. The result is a vectorial land ... Keywords: MCMC, RJMCMC, building detection, dense urban area, digital elevation models, image processing, inhomogeneous Poisson point process, land register, laser data, simulated annealing, stochastic geometry

Mathias Ortner; Xavier Descombes; Josiane Zerubia

2007-04-01T23:59:59.000Z

360

User-driven relational models for entity-relation search and extraction  

Science Conference Proceedings (OSTI)

The ability to extract new knowledge from large datasets is one of the most significant challenges facing society. The problem spans across domains from intelligence analysis and scientific research to basic web search. Current information extraction ... Keywords: information extraction, information retrieval, knowledge discovery, relational models

Jay Urbain

2012-08-01T23:59:59.000Z

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

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

Science Conference Proceedings (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

362

Modal parameter extraction from large operating structures using ambient excitation  

DOE Green Energy (OSTI)

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

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

1995-12-31T23:59:59.000Z

363

Unsupervised information extraction from unstructured, ungrammatical data sources on the world wide web  

E-Print Network (OSTI)

Abstract Information extraction from unstructured, ungrammatical data such as classified listings is difficult because traditional structural and grammatical extraction methods do not apply. Previous work has exploited reference sets to aid such extraction, but it did so using supervised machine learning. In this paper, we present an unsupervised approach that both selects the relevant reference set(s) automatically and then uses it for unsupervised extraction. We validate our approach with experimental results that show our unsupervised extraction is competitive with supervised machine learning approaches, including the previous supervised approach that exploits reference sets.

Craig A. Knoblock

2007-01-01T23:59:59.000Z

364

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

Science Conference Proceedings (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

365

Method of extracting heat from dry geothermal reservoirs  

DOE Patents (OSTI)

Hydraulic fracturing is used to interconnect two or more holes that penetrate a previously dry geothermal reservoir, and to produce within the reservoir a sufficiently large heat-transfer surface so that heat can be extracted from the reservoir at a usefully high rate by a fluid entering it through one hole and leaving it through another. Introduction of a fluid into the reservoir to remove heat from it and establishment of natural (unpumped) convective circulation through the reservoir to accomplish continuous heat removal are important and novel features of the method. (auth)

Potter, R.M.; Robinson, E.S.; Smith, M.C.

1974-01-22T23:59:59.000Z

366

Extraction and purification of fullerenes: A comprehensive review  

SciTech Connect

This review summarizes the advances of the last four years in the field of fullerenes purification. Purification involves extraction from soots, which may be considered as a prepurification step, and separation by liquid chromatography, where the different stationary phases tested are listed. The authors also describe other purification techniques, like elution on molecular sieves or activated charcoal, gel permeation, and supercritical fluids purification. The authors purpose is to show the reader the general trends for obtaining pure C{sub 60} and C{sub 70}.

Theobald, J.; Perrut, M. [Separex Chimie Fine, Champigneulles (France); Weber, J.V. [Universite De Metz (France)] [and others

1995-08-01T23:59:59.000Z

367

Ice slurry cooling research: Storage tank ice agglomeration and extraction  

DOE Green Energy (OSTI)

A new facility has been built to conduct research and development on important issues related to implementing ice slurry cooling technology. Ongoing studies are generating important information on the factors that influence ice particle agglomeration in ice slurry storage tanks. The studies are also addressing the development of methods to minimize and monitor agglomeration and improve the efficiency and controllability of tank extraction of slurry for distribution to cooling loads. These engineering issues impede the utilization of the ice slurry cooling concept that has been under development by various groups.

Kasza, K. [Argonne National Lab., IL (United States); Hayashi, Kanetoshi [NKK Corp., Kawasaki (Japan)

1999-08-01T23:59:59.000Z

368

SEPARATION OF PLUTONIUM FROM LANTHANUM BY CHELATION-EXTRACTION  

DOE Patents (OSTI)

Plutonium can be separated from a mixture of plutonlum and lanthanum in which the lanthanum to plutonium molal ratio ls at least five by adding the ammonium salt of N-nitrosoarylhydroxylamine to an aqueous solution having a pH between about 3 and 0.2 and containing the plutonium in a valence state of at least +3, to form a plutonium chelate compound of N-nitrosoarylhydroxylamine. The plutonium chelate compound may be recovered from the solution by extracting with an immiscible organic solvent such as chloroform.

James, R.A.; Thompson, S.G.

1958-12-01T23:59:59.000Z

369

Method for extracting lanthanides and actinides from acid solutions  

SciTech Connect

A process for the recovery of actinide and lanthanide values from aqueous acidic solutions with an organic extractant having the formula: ##STR1## where .phi. is phenyl, R.sup.1 is a straight or branched alkyl or alkoxyalkyl containing from 6 to 12 carbon atoms and R.sup.2 is an alkyl containing from 3 to 6 carbon atoms. 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. Philip (Naperville, IL); Kalina, Dale G. (Naperville, IL); Kaplan, Louis (Lombard, IL); Mason, George W. (Clarendon Hills, IL)

1985-01-01T23:59:59.000Z

370

SOLVENT EXTRACTION PROCESS FOR THE SEPARATION OF URANIUM AND THORIUM FROM PROTACTINIUM AND FISSION PRODUCTS  

DOE Patents (OSTI)

A liquid-liquid extraction process was developed for recovering thorium and uranium values from a neutron irradiated thorium composition. They are separated from a solvent extraction system comprising a first end extraction stage for introducing an aqueous feed containing thorium and uranium into the system consisting of a plurality of intermediate extractiorr stages and a second end extractron stage for introducing an aqueous immiscible selective organic solvent for thorium and uranium in countercurrent contact therein with the aqueous feed. A nitrate iondeficient aqueous feed solution containing thorium and uranium was introduced into the first end extraction stage in countercurrent contact with the organic solvent entering the system from the second end extraction stage while intro ducing an aqueous solution of salting nitric acid into any one of the intermediate extraction stages of the system. The resultant thorium and uranium-laden organic solvent was removed at a point preceding the first end extraction stage of the system. (AEC)

Rainey, R.H.; Moore, J.G.

1962-08-14T23:59:59.000Z

371

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

SciTech Connect

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

372

Moving baseline for evaluation of advanced coal-extraction systems  

SciTech Connect

This document reports results from the initial effort to establish baseline economic performance comparators for a program whose intent is to define, develop, and demonstrate advanced systems suitable for coal resource extraction beyond the year 2000. Systems used in this study were selected from contemporary coal mining technology and from conservative conjectures of year 2000 technology. The analysis was also based on a seam thickness of 6 ft. Therefore, the results are specific to the study systems and the selected seam thickness. To be more beneficial to the program, the effort should be extended to other seam thicknesses. This document is one of a series which describe systems level requirements for advanced underground coal mining equipment. Five areas of performance are discussed: production cost, miner safety, miner health, environmental impact, and recovery efficiency. The projections for cost and production capability comprise a so-called moving baseline which will be used to assess compliance with the systems requirement for production cost. Separate projections were prepared for room and pillar, longwall, and shortwall technology all operating under comparable sets of mining conditions. This work is part of an effort to define and develop innovative coal extraction systems suitable for the significant resources remaining in the year 2000.

Bickerton, C.R.; Westerfield, M.D.

1981-04-15T23:59:59.000Z

373

Audio enabled information extraction system for cricket and hockey domains  

E-Print Network (OSTI)

The proposed system aims at the retrieval of the summarized information from the documents collected from web based search engine as per the user query related to cricket and hockey domain. The system is designed in a manner that it takes the voice commands as keywords for search. The parts of speech in the query are extracted using the natural language extractor for English. Based on the keywords the search is categorized into 2 types: - 1.Concept wise - information retrieved to the query is retrieved based on the keywords and the concept words related to it. The retrieved information is summarized using the probabilistic approach and weighted means algorithm.2.Keyword search - extracts the result relevant to the query from the highly ranked document retrieved from the search by the search engine. The relevant search results are retrieved and then keywords are used for summarizing part. During summarization it follows the weighted and probabilistic approaches in order to identify the data comparable to the k...

Saraswathi, S; B., Sai Vamsi Krishna; S, Suresh Reddy

2010-01-01T23:59:59.000Z

374

A Novel Feature Extraction for Robust EMG Pattern Recognition  

E-Print Network (OSTI)

Varieties of noises are major problem in recognition of Electromyography (EMG) signal. Hence, methods to remove noise become most significant in EMG signal analysis. White Gaussian noise (WGN) is used to represent interference in this paper. Generally, WGN is difficult to be removed using typical filtering and solutions to remove WGN are limited. In addition, noise removal is an important step before performing feature extraction, which is used in EMG-based recognition. This research is aimed to present a novel feature that tolerate with WGN. As a result, noise removal algorithm is not needed. Two novel mean and median frequencies (MMNF and MMDF) are presented for robust feature extraction. Sixteen existing features and two novelties are evaluated in a noisy environment. WGN with various signal-to-noise ratios (SNRs), i.e. 20-0 dB, was added to the original EMG signal. The results showed that MMNF performed very well especially in weak EMG signal compared with others. The error of MMNF in weak EMG signal with...

Phinyomark, Angkoon; Phukpattaranont, Pornchai

2009-01-01T23:59:59.000Z

375

PRODUCTION OF CARBON PRODUCTS USING A COAL EXTRACTION PROCESS  

DOE Green Energy (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

376

Extraction of Mangrove Biophysical Parameters Using Airborne LiDAR  

E-Print Network (OSTI)

Abstract: Tree parameter determinations using airborne Light Detection and Ranging (LiDAR) have been conducted in many forest types, including coniferous, boreal, and deciduous. However, there are only a few scientific articles discussing the application of LiDAR to mangrove biophysical parameter extraction at an individual tree level. The main objective of this study was to investigate the potential of using LiDAR data to estimate the biophysical parameters of mangrove trees at an individual tree scale. The Variable Window Filtering (VWF) and Inverse Watershed Segmentation (IWS) methods were investigated by comparing their performance in individual tree detection and in deriving tree position, crown diameter, and tree height using the LiDAR-derived Canopy Height Model (CHM). The results demonstrated that each method performed well in mangrove forests with a low percentage of crown overlap conditions. The VWF method yielded a slightly higher accuracy for mangrove parameter extractions from LiDAR data compared with the IWS method. This is because the VWF method uses an adaptive circular filtering window size based on an allometric relationship. As a result of the VWF method, the position

Wasinee Wannasiri; Masahiko Nagai; Kiyoshi Honda; Phisan Santitamnont; Poonsak Miphokasap

2013-01-01T23:59:59.000Z

377

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

DOE Green Energy (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

378

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

379

Pyrochemical process for extracting plutonium from an electrolyte salt  

DOE Patents (OSTI)

A pyrochemical process for extracting plutonium from a plutonium-bearing salt is disclosed. The process is particularly useful in the recovery of plutonium from electrolyte salts which are left over from the electrorefining of plutonium. In accordance with the process, the plutonium-bearing salt is melted and mixed with metallic calcium. The calcium reduces ionized plutonium in the salt to plutonium metal, and also causes metallic plutonium in the salt, which is typically present as finely dispersed metallic shot, to coalesce. The reduced and coalesced plutonium separates out on the bottom of the reaction vessel as a separate metallic phase which is readily separable from the overlying salt upon cooling of the mixture. Yields of plutonium are typically on the order of 95%. The stripped salt is virtually free of plutonium and may be discarded to low-level waste storage.

Mullins, Lawrence J. (Los Alamos, NM); Christensen, Dana C. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

380

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

Note: This page contains sample records for the topic "dpe dual-phase extraction" from the National Library of EnergyBeta (NLEBeta).
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381

Market enhancement of shale oil: The native products extraction technology  

SciTech Connect

The overall objective of this work was to assess the feasibility of enhancing shale oil commercialization through SO/NPX technology. Specific objectives were: (1) To determine the properties and characteristics of fractions isolable from shale oil utilizing separation sequences which are based on thermodynamic considerations; (2) To identify product streams of market value for promising technology development; (3)To conduct technology development studies leading to a shale oil extraction and processing sequence which promises economic enhancement of shale oil commercialization; (4) To develop an analytical methodology and model for obtaining engineering design data required for process development; (5) To estimate the economics of SO/NPX including the potential for enhancing the profitability of a commercial-scale shale oil MIS retort.

Bunger, J.W. (Bunger (James W.) and Associates, Inc., Salt Lake City, UT (United States)); DuBow, J.B. (Utah Univ., Salt Lake City, UT (United States))

1991-10-01T23:59:59.000Z

382

Domain-independent information extraction in unstructured text  

SciTech Connect

Extracting information from unstructured text has become an important research area in recent years due to the large amount of text now electronically available. This status report describes the findings and work done during the second year of a two-year Laboratory Directed Research and Development Project. Building on the first-year`s work of identifying important entities, this report details techniques used to group words into semantic categories and to output templates containing selective document content. Using word profiles and category clustering derived during a training run, the time-consuming knowledge-building task can be avoided. Though the output still lacks in completeness when compared to systems with domain-specific knowledge bases, the results do look promising. The two approaches are compatible and could complement each other within the same system. Domain-independent approaches retain appeal as a system that adapts and learns will soon outpace a system with any amount of a priori knowledge.

Irwin, N.H. [Sandia National Labs., Albuquerque, NM (United States). Software Surety Dept.

1996-09-01T23:59:59.000Z

383

Scaling of Superconducting Switches for Extraction of Magnetic Energy  

E-Print Network (OSTI)

In certain cases it is necessary to extract the energy from a superconducting magnet when it quenches, in order to limit the heat generated by the event and thus prevent irreversible damage. This is usually achieved by opening a contact breaker across a resistor in the circuit feeding the magnet. For the heavy currents used to excite large magnets such switches incorporate sophisticated devices to limit arcing during the operation; besides being quite large and expensive, such switches have a limited lifetime. It is therefore interesting to consider the use of superconducting switches to perform this function, the advantage being that such switches would (i) not require maintenance and (ii) would be housed within the cryogenic environment of the magnet, and thus avoid permanent diversion of the current in and out of that environment to the mechanical switch (which operates at room temperature). However, practical switches for such an application are made up of superconductor in a metal matrix, and it is conve...

Ballarino, A

2010-01-01T23:59:59.000Z

384

Method and apparatus for extracting water from air  

DOE Patents (OSTI)

The present invention provides a method and apparatus for extracting liquid water from moist air using minimal energy input. The method comprises compressing moist air under conditions that foster the condensation of liquid water (ideally isothermal to a humidity of 1.0, then adiabatic thereafter). The air can be decompressed under conditions that do not foster the vaporization of the condensate. The decompressed, dried air can be exchanged for a fresh charge of moist air and the process repeated. The liquid condensate can be removed for use. The apparatus can comprise a compression chamber having a variable internal volume. An intake port allows moist air into the compression chamber. An exhaust port allows dried air out of the compression chamber. A condensation device fosters condensation at the desired conditions. A condensate removal port allows liquid water to be removed.

Spletzer, Barry L. (Albuquerque, NM)

2001-01-01T23:59:59.000Z

385

Extending Metadata Definitions by Automatically Extracting and Organizing Glossary Definitions  

E-Print Network (OSTI)

Metadata descriptions of database contents are required to build and use systems that access and deliver data in response to user requests. When numerous heterogeneous databases are brought together in a single system, their various metadata formalizations must be homogenized and integrated in order to support the access planning and delivery system. This integration is a tedious process that requires human expertise and attention. In this paper we describe a method of speeding up the formalization and integration of new metadata. The method takes advantage of the fact that databases are often described in web pages containing natural language glossaries that define pertinent aspects of the data. Given a root URL, our method identifies likely glossaries, extracts and formalizes aspects of relevant concepts defined in them, and automatically integrates the new formalized metadata concepts into a large model of the domain and associated conceptualizations.

Eduard Hovy; Andrew Philpot; Judith Klavans; Ulrich Germann; Peter Davis; Samuel Popper

2003-01-01T23:59:59.000Z

386

Haze Formation and Behavior in Liquid-Liquid Extraction Processes  

Science Conference Proceedings (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

387

SOLVEX: a computer program for simulation of solvent extraction processes  

SciTech Connect

SOLVEX is a FORTRAN IV computer program that simulates the dynamic behavior of solvent extraction processes conducted in mixer-settlers and centrifugal contactors. Two options permit terminating dynamic phases by time or by achieving steady state, and a third option permits artificial rapid close to steady state. Thus the program is well suited to multiple phases of dynamic problems and multiple input of steady state problems. Changes from the previous problem are the only inputs required for each succeeding problem. Distribution data can be supplied by two-variable third-power polynomial equations or by three- variable tables in any one of 16 different combinations involving phase concentrations or distribution coefficients (ratio of phase concentrations) or their logarithms. (auth)

Scotten, W.C.

1975-09-01T23:59:59.000Z

388

Method and apparatus for extracting water from air  

DOE Patents (OSTI)

The present invention provides a method and apparatus for extracting liquid water from moist air using minimal energy input. The method comprises compressing moist air under conditions that foster the condensation of liquid water. The air can be decompressed under conditions that do not foster the vaporization of the condensate. The decompressed, dried air can be exchanged for a fresh charge of moist air and the process repeated. The liquid condensate can be removed for use. The apparatus can comprise a compression chamber having a variable internal volume. An intake port allows moist air into the compression chamber. An exhaust port allows dried air out of the compression chamber. A condensation device fosters condensation at the desired conditions. A condensate removal port allows liquid water to be removed.

Spletzer, Barry L. (Albuquerque, NM); Callow, Diane Schafer (Albuquerque, NM); Marron, Lisa C. (Albuquerque, NM); Salton, Jonathan R. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

389

Pyrochemical process for extracting plutonium from an electrolyte salt  

DOE Patents (OSTI)

A pyrochemical process for extracting plutonium from a plutonium-bearing salt is disclosed. The process is particularly useful in the recovery of plutonium for electrolyte salts which are left over from the electrorefining of plutonium. In accordance with the process, the plutonium-bearing salt is melted and mixed with metallic calcium. The calcium reduces ionized plutonium in the salt to plutonium metal, and also causes metallic plutonium in the salt, which is typically present as finely dispersed metallic shot, to coalesce. The reduced and coalesced plutonium separates out on the bottom of the reaction vessel as a separate metallic phase which is readily separable from the overlying salt upon cooling of the mixture. Yields of plutonium are typically on the order of 95%. The stripped salt is virtually free of plutonium and may be discarded to low-level waste storage.

Mullins, L.J.; Christensen, D.C.

1982-09-20T23:59:59.000Z

390

Fluorescent Functionalized Mesoporous Silica for Radioactive Material Extraction  

Science Conference Proceedings (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

391

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

392

Using curvature invariants for wave extraction in numerical relativity  

E-Print Network (OSTI)

We present a new expression for the Weyl scalar Psi_4 that can be used in numerical relativity to extract the gravitational wave content of a spacetime. The formula relies upon the identification of transverse tetrads, namely the ones in which Psi_1=Psi_3=0. It is well known that tetrads with this property always exist in a general Petrov type I spacetime. A sub-class of these tetrads naturally converges to the Kinnersley tetrad in the limit of Petrov type D spacetime. However, the transverse condition fixes only four of the six parameters coming from the Lorentz group of transformations applied to tetrads. Here we fix the tetrad completely, in particular by giving the expression for the spin-boost transformation that was still unclear. The value of Psi_4 in this optimal tetrad is given as a function of the two curvature invariants I and J.

Andrea Nerozzi; Oliver Elbracht

2008-11-10T23:59:59.000Z

393

Safeguards for Uranium Extraction (UREX) +1a Process  

E-Print Network (OSTI)

As nuclear energy grows in the United States and around the world, the expansion of the nuclear fuel cycle is inevitable. All currently deployed commercial reprocessing plants are based on the Plutonium - Uranium Extraction (PUREX) process. However, this process is not implemented in the U.S. for a variety of reasons, one being that it is considered by some as a proliferation risk. The 2001 Nuclear Energy Policy report recommended that the U.S. "develop reprocessing and treatment technologies that are cleaner, more efficient, less waste-intensive, and more proliferation-resistant." The Uranium Extraction (UREX+) reprocessing technique has been developed to reach these goals. However, in order for UREX+ to be considered for commercial implementation, a safeguards approach is needed to show that a commercially sized UREX+ facility can be safeguarded to current international standards. A detailed safeguards approach for a UREX+1a reprocessing facility has been developed. The approach includes the use of nuclear material accountancy (MA), containment and surveillance (C/S) and solution monitoring (SM). Facility information was developed for a hypothesized UREX+1a plant with a throughput of 1000 Metric Tons Heavy Metal (MTHM) per year. Safeguard goals and safeguard measures to be implemented were established. Diversion and acquisition pathways were considered; however, the analysis focuses mainly on diversion paths. The detection systems used in the design have the ability to provide near real-time measurement of special fissionable material in feed, process and product streams. Advanced front-end techniques for the quantification of fissile material in spent nuclear fuel were also considered. The economic and operator costs of these systems were not considered. The analysis shows that the implementation of these techniques result in significant improvements in the ability of the safeguards system to achieve the objective of timely detection of the diversion of a significant quantity of nuclear material from the UREX+1a reprocessing facility and to provide deterrence against such diversion by early detection.

Feener, Jessica S.

2010-05-01T23:59:59.000Z

394

Impact-driven pressure management via targeted brine extraction Conceptual studies of CO2 storage in saline formations  

E-Print Network (OSTI)

Combining Brine Extraction, desalination, and Residual-Brinebeneficial use such as desalination for drinking water

Birkholzer, J.T.

2013-01-01T23:59:59.000Z

395

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

SciTech Connect

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

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

1999-10-22T23:59:59.000Z

396

Energy Extraction in the CERN Large Hadron Collider a Project Overview  

E-Print Network (OSTI)

In case of a resistive transition (quench), fast and reliable extraction of the magnetic energy, stored in the superconducting coils of the electromagnets of a particle collider, represents an important part of its magnet protection system. In general, the quench detectors, the quench heaters and the cold by-pass diodes across each magnet, together with the energy extraction facilities provide the required protection of the quenching superconductors against damage due to local energy dissipation. In CERN's LHC machine the energy stored in each of its eight superconducting dipole chains exceeds 1300 MJ. Following an opening of the extraction switches this energy will be absorbed in large extraction resistors located in the underground collider tunnel or adjacent galleries, during the exponential current decay. Also the sixteen, 13 kA quadrupole chains (QF, QD) and more than one hundred and fifty, 600 A circuits of the corrector magnets will be equipped with extraction systems. The extraction switch-gear is bas...

Dahlerup-Petersen, K; Kazmine, B; Medvedko, A S; Sytchev, V V; Vasilev, L B

2001-01-01T23:59:59.000Z

397

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

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

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

398

Hierarchical extraction of critical area for shorts in very large ICs  

Science Conference Proceedings (OSTI)

This paper describes an algorithm for efficiently extracting critical area in large VLSI circuits. The algorithm, implemented to handle shorts between electrical nets, takes advantage of the available hierarchy in the layout description in order to speed-up ... Keywords: CREST software, IC design, VLSI, circuit layout CAD, critical area extraction, hierarchical extraction, integrated circuit layout, large VLSI circuits, layout description, shorts, very large ICs

P. K. Nag; W. Maly

1995-11-01T23:59:59.000Z

399

Precautionary note on the use of dibutyl-N,N-diethylcarbamoylphosphonate in solvent extraction  

SciTech Connect

Investigation of dibutyl-N,N-diethylcarbamoylphosphonate (DBDECP) as a solvent extraction reagent has revealed that the commercially available compound apparently contains low concentrations of aqueous soluble impurities which drastically effect the distribution ratios obtained using tracer scale radiochemical techniques. Analysis of previously published data regarding this extractant indicates that wide variations exist in some of the reported distribution ratios obtained for this compound under quite similar conditions. Caution must be exercised, therefore, in interpreting solvent extraction data obtained with DBDECP.

Kalina, D.G.; Tansey, B.

1985-01-01T23:59:59.000Z

400

Selective extraction of copper, mercury, silver and palladium ions from water using hydrophobic ionic liquids.  

E-Print Network (OSTI)

K. ; Khan, R. H. Low dose mercury toxicity and human health.Gochfeld, M. Cases of mercury exposure, bioavailability, andto enhanced extraction for mercury. Acknowledgements For

Papaiconomou, Nicolas; Lee, Jong-Min; Salminen, Justin; Von Stosch, Moritz; Prausnitz, John M.

2008-01-01T23:59:59.000Z

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


401

Device structure for OLED light device 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.

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

2008-01-22T23:59:59.000Z

402

Utilization of Coal Extract as a Coke Feedstock - Programmaster.org  

Science Conference Proceedings (OSTI)

Abstract Scope, Preparation of prebaked anode utilizing coal solvent extraction technology will be reported. In the prebaked anode industry, it is recognized that

403

Efficacy of compost amendments and extracts in the control of foliar disease in organic tomato production.  

E-Print Network (OSTI)

??Effects of compost amendments and extracts on tomato foliar disease severity and yield were assessed in greenhouse and field experiments. Aerated and nonaerated compost tea (more)

Murray, William Kraft.

2005-01-01T23:59:59.000Z

404

Extraction of oil from algae for biofuel production by thermochemical liquefaction / Anro Barnard.  

E-Print Network (OSTI)

??The extraction of oil from microalgae was investigated. The study focused on the hydrothermal liquefaction of the microalgae Microcystis aeruginosa, Cyclotella meneghinia and Nitzschia pusilla. (more)

Barnard, Anro

2009-01-01T23:59:59.000Z

405

EXTRACTION OF HEXAVALENT PLUTONIUM FROM AQUEOUS ACIDIC SOLUTIONS WITH ETHYL SULFIDE  

DOE Patents (OSTI)

A process is described for extracting Pu>s6/sup > /om an aqueous ammonium nitrate-containing nitric acid solution with ethyl sulfide.

Seaborg, G.T.

1961-06-27T23:59:59.000Z

406

Studies on extraction and control of plant-parasitic nematodes on corn.  

E-Print Network (OSTI)

??Some plant-parasitic nematodes exist within root tissue and must be extracted from the roots to identify and count them. However, efficiency comparisons of methods and (more)

Batista da Silva, Mychele

2013-01-01T23:59:59.000Z

407

Recovery of Sugars from Ionic Liquid Biomass Liquor by Solvent Extraction  

E-Print Network (OSTI)

from Ionic Liquid Biomass Liquor by Solvent ExtractionAbstract The dissolution of biomass into ionic liquids (ILs)be a promising alternative biomass pretreatment technology,

Brennan, Timothy C.; Datta, Supratim; Blanch, Harvey W.; Simmons, Blake A.; Holmes, Bradley M.

2010-01-01T23:59:59.000Z

408

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

409

Recent International R&D Activities in the Extraction of Uranium from Seawater  

E-Print Network (OSTI)

Lemaire, Selective concentration of uranium from seawater byfor exploration of uranium. Reaktortagung, 7th (1975), 307-Germany. 41. H. G. Bals, Uranium extraction from seawater.

Rao, Linfeng

2011-01-01T23:59:59.000Z

410

Evaluation of Thermal Efficiency and Energy Conservation of an Extraction / Condensing Cogeneration System.  

E-Print Network (OSTI)

??The extraction-condensing cogeneration system is a popular technology for heat and power integration which can be used by petrochemical process. To compare with back pressure (more)

Ko, Yi-tsung

2004-01-01T23:59:59.000Z

411

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

SciTech Connect

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

412

Modeling the Limits and Effects of Energy?Extraction from Tidal...  

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

agree well with analytical solution by Garrett & Cummins (2004, 2005) Extractable Max Power Function of (tidal amplitude, volume flux) P model 2,154 MW; P analytical ...

413

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

414

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

DOE Green Energy (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

415

Extraction of Hydrological Proximity Measures from DEMs using Parallel Processing  

Science Conference Proceedings (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

416

PRODUCTION OF CARBON PRODUCTS USING A COAL EXTRACTION PROCESS  

Science Conference Proceedings (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

417

Deep PDF parsing to extract features for detecting embedded malware.  

Science Conference Proceedings (OSTI)

The number of PDF files with embedded malicious code has risen significantly in the past few years. This is due to the portability of the file format, the ways Adobe Reader recovers from corrupt PDF files, the addition of many multimedia and scripting extensions to the file format, and many format properties the malware author may use to disguise the presence of malware. Current research focuses on executable, MS Office, and HTML formats. In this paper, several features and properties of PDF Files are identified. Features are extracted using an instrumented open source PDF viewer. The feature descriptions of benign and malicious PDFs can be used to construct a machine learning model for detecting possible malware in future PDF files. The detection rate of PDF malware by current antivirus software is very low. A PDF file is easy to edit and manipulate because it is a text format, providing a low barrier to malware authors. Analyzing PDF files for malware is nonetheless difficult because of (a) the complexity of the formatting language, (b) the parsing idiosyncrasies in Adobe Reader, and (c) undocumented correction techniques employed in Adobe Reader. In May 2011, Esparza demonstrated that PDF malware could be hidden from 42 of 43 antivirus packages by combining multiple obfuscation techniques [4]. One reason current antivirus software fails is the ease of varying byte sequences in PDF malware, thereby rendering conventional signature-based virus detection useless. The compression and encryption functions produce sequences of bytes that are each functions of multiple input bytes. As a result, padding the malware payload with some whitespace before compression/encryption can change many of the bytes in the final payload. In this study we analyzed a corpus of 2591 benign and 87 malicious PDF files. While this corpus is admittedly small, it allowed us to test a system for collecting indicators of embedded PDF malware. We will call these indicators features throughout the rest of this report. The features are extracted using an instrumented PDF viewer, and are the inputs to a prediction model that scores the likelihood of a PDF file containing malware. The prediction model is constructed from a sample of labeled data by a machine learning algorithm (specifically, decision tree ensemble learning). Preliminary experiments show that the model is able to detect half of the PDF malware in the corpus with zero false alarms. We conclude the report with suggestions for extending this work to detect a greater variety of PDF malware.

Munson, Miles Arthur; Cross, Jesse S. (Missouri University of Science and Technology, Rolla, MO)

2011-09-01T23:59:59.000Z

418

A Bayesian approach to extracting meaning from system behavior  

SciTech Connect

The modeling relation and its reformulation to include the semiotic hierarchy is essential for the understanding, control, and successful re-creation of natural systems. This presentation will argue for a careful application of Rosen`s modeling relationship to the problems of intelligence and autonomy in natural and artificial systems. To this end, the authors discuss the essential need for a correct theory of induction, learning, and probability; and suggest that modern Bayesian probability theory, developed by Cox, Jaynes, and others, can adequately meet such demands, especially on the operational level of extracting meaning from observations. The methods of Bayesian and maximum Entropy parameter estimation have been applied to measurements of system observables to directly infer the underlying differential equations generating system behavior. This approach by-passes the usual method of parameter estimation based on assuming a functional form for the observable and then estimating the parameters that would lead to the particular observed behavior. The computational savings is great since only location parameters enter into the maximum-entropy calculations; this innovation finesses the need for nonlinear parameters altogether. Such an approach more directly extracts the semantics inherent in a given system by going to the root of system meaning as expressed by abstract form or shape, rather than in syntactic particulars, such as signal amplitude and phase. Examples will be shown how the form of a system can be followed while ignoring unnecessary details. In this sense, the authors are observing the meaning of the words rather than being concerned with their particular expression or language. For the present discussion, empirical models are embodied by the differential equations underlying, producing, or describing the behavior of a process as measured or tracked by a particular variable set--the observables. The a priori models are probability structures that capture syntactical relationships within the formal system that mirrors the natural system under observation. Inductive learning is then a prescription for incorporating the current, and possibly changing, empirical model into an iterative syntactical relationship in the form of a statement about parameters, producing an updated a priori model subject to future modification in the light of changing parameter sets.

Dress, W.B.

1998-08-01T23:59:59.000Z

419

Extracting cosmic microwave background polarization from satelliteastrophysical maps  

Science Conference Proceedings (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

420

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

2002-09-27T23:59:59.000Z

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


421

Catalog Extraction in SZ Cluster Surveys: a matched filter approach  

E-Print Network (OSTI)

We present a method based on matched multifrequency filters for extracting cluster catalogs from Sunyaev-Zel'dovich (SZ) surveys. We evaluate its performance in terms of completeness, contamination rate and photometric recovery for three representative types of SZ survey: a high resolution single frequency radio survey (AMI), a high resolution ground-based multiband survey (SPT), and the Planck all-sky survey. These surveys are not purely flux limited, and they loose completeness significantly before their point-source detection thresholds. Contamination remains relatively low at <5% (less than 30%) for a detection threshold set at S/N=5 (S/N=3). We identify photometric recovery as an important source of catalog uncertainty: dispersion in recovered flux from multiband surveys is larger than the intrinsic scatter in the Y-M relation predicted from hydrodynamical simulations, while photometry in the single frequency survey is seriously compromised by confusion with primary cosmic microwave background anisotropy. The latter effect implies that follow-up observations in other wavebands (e.g., 90 GHz, X-ray) of single frequency surveys will be required. Cluster morphology can cause a bias in the recovered Y-M relation, but has little effect on the scatter; the bias would be removed during calibration of the relation. Point source confusion only slightly decreases multiband survey completeness; single frequency survey completeness could be significantly reduced by radio point source confusion, but this remains highly uncertain because we do not know the radio counts at the relevant flux levels.

J. -B. Melin; J. G. Bartlett; J. Delabrouille

2006-02-20T23:59:59.000Z

422

Reservoir and injection technology and Heat Extraction Project  

DOE Green Energy (OSTI)

For the Stanford Geothermal Program in the fiscal year 1989, the task areas include predictive modeling of reservoir behavior and tracer test interpretation and testing. Major emphasis is in reservoir technology, reinjection technology, and heat extraction. Predictive modeling of reservoir behavior consists of a multi-pronged approach to well test analysis under a variety of conditions. The efforts have been directed to designing and analyzing well tests in (1) naturally fractured reservoirs; (2) fractured wells; (3) complex reservoir geometries; and, (4) gas reservoirs including inertial and other effects. The analytical solutions for naturally fractured reservoirs are determined using fracture size distribution. In the study of fractured wells, an elliptical coordinate system is used to obtain semi-analytical solutions to finite conductivity fractures. Effort has also been directed to the modeling and creation of a user friendly computer program for steam/gas reservoirs including wellbore storage, skin and non-Darcy flow effects. This work has a complementary effort on modeling high flow rate wells including inertial effects in the wellbore and fractures. In addition, work on gravity drainage systems is being continued.

Horne, R.N.; Ramey, H.H. Jr.; Miller, F.G.; Brigham, W.E.; Kruger, P.

1989-12-31T23:59:59.000Z

423

PyGFit: A Tool for Extracting PSF Matched Photometry  

E-Print Network (OSTI)

We present PyGFit, a program designed to measure PSF-matched photometry from images with disparate pixel scales and PSF sizes. While PyGFit has a number of uses, its primary purpose is to extract robust spectral energy distributions (SEDs) from crowded images. It does this by fitting blended sources in crowded, low resolution images with models generated from a higher resolution image. This approach minimizes the impact of crowding and also yields consistently measured fluxes in different filters, minimizing systematic uncertainty in the final SEDs. We present an example of applying PyGFit to real data and perform simulations to test its fidelity. The uncertainty in the best-fit flux rises sharply as a function of nearest-neighbor distance for objects with a neighbor within 60% of the PSF size. Similarly, the uncertainty increases quickly for objects blended with a neighbor more than four times brighter. For all other objects the fidelity of PyGFit's results depends only on flux, and the uncertainty is primar...

Mancone, Conor L; Moustakas, Leonidas A; Price, Andrew

2013-01-01T23:59:59.000Z

424

Presidential Rapid Commercialization Initiative for mixed waste solvent extraction  

SciTech Connect

Recently, the Fernald Environmental Management Project (FEMP) has made some major steps in mixed waste treatment which have taken it closer to meeting final remediation goals. However, one major hurdle remains for the FEMP mixed waste treatment program, and that hurdle is tri-mixed waste. Tri-mixed is a term coined to describe low-level waste containing RCRA hazardous constituents along with polychlorinated biphenyls (PCB). The prescribed method for disposal of PCBs is incineration. In mixed waste treatment plans developed by the FEMP with public input, the FEMP committed to pursue non-thermal treatment methods and avoid the use of incineration. Through the SITE Program, the FEMP identified a non-thermal treatment technology which uses solvents to extract PCBs. The technology belongs to a small company called Terra-Kleen Response Group, Inc. A question arose as to how can this new and innovative technology be implemented by a small company at a Department of Energy (DOE) facility. The answer came in the form of the Rapid Commercialization Initiative (RCI) and the Mixed Waste Focus Area (MWFA). RCI is a program sponsored by the Department of commerce (DOC), DOE, Department of Defense (DOD), US EPA and various state agencies to aid companies to market new and innovative technologies.

Honigford, L.; Dilday, D.; Cook, D. [Fluor Daniel Fernald, Inc., Cincinnati, OH (United States). Fernald Environmental Management Project; Sattler, J. [USDOE Fernald Area Office, OH (United States)

1997-03-01T23:59:59.000Z

425

Characterization of hot dry rock geothermal energy extraction systems  

DOE Green Energy (OSTI)

The engineering of heat exchange systems by which geothermal heat can be efficiently extracted from hot impermeable rocks is studied. The system currently under investigation at Fenton Hill, New Mexico consists of a network of large fractures created through the hydraulic pressurization of a well penetrating hot basement rocks and subsequently intersected by a second well drilled to form a flow-thru system. Cool water pumped into the fractures through one well, once heated in the reservoir, returns to the surface through the second well, is cooled, and then recirculated. While much is known about the performance parameters of the fracture network from short-term flow tests, little is understood concerning the spatial dimensions and geometrical relationship of individual fractures comprising the network. Ultimately, the success one has in estimating the long-term performance of such a system where commercialization is an issue, and in engineering future systems with optimal performance, depends on the success in characterizing the flow-thru fracture networks. To date only nonconventional application of oil field logging techniques and acoustic emissions studies have been used in the characterization of the fracture network.

Albright, J.N.; Newton, C.A.

1981-01-01T23:59:59.000Z

426

Extracting Information about EMRIs using Time-Frequency Methods  

E-Print Network (OSTI)

The inspirals of stellar-mass compact objects into supermassive black holes are some of the most exciting sources of gravitational waves for LISA. Detection of these sources using fully coherent matched filtering is computationally intractable, so alternative approaches are required. In Wen & Gair (2005), we proposed a detection method based on searching for significant deviation of power density from noise in a time-frequency spectrogram of the LISA data. The performance of the algorithm was assessed in Gair & Wen (2005) using Monte-Carlo simulations on several trial waveforms and approximations to the noise statistics. We found that typical extreme mass ratio inspirals (EMRIs) could be detected at distances of up to 1-3 Gpc, depending on the source parameters. In this paper, we first give an overview of our previous work in Wen & Gair (2005) and Gair & Wen (2005), and discuss the performance of the method in a broad sense. We then introduce a decomposition method for LISA data that decodes LISA's directional sensitivity. This decomposition method could be used to improve the detection efficiency, to extract the source waveform, and to help solve the source confusion problem. Our approach to constraining EMRI parameters using the output from the time-frequency method will be outlined.

Linqing Wen; Yanbei Chen; Jonathan Gair

2006-12-06T23:59:59.000Z

427

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

428

REVIEWS FOR IN SITU LEACH URANIUM EXTRACTION LICENSE APPLICATIONS  

E-Print Network (OSTI)

Review Plan (NUREG1569) which provides guidance for staff reviews of applications to develop and operate uranium in situ leach facilities. Under the provisions of Title 10 of the Code of Federal Regulations, Part 40 (10 CFR Part 40), Domestic Licensing of Source Material, an NRC Materials License is required to conduct uranium recovery by in situ leach extraction techniques. Applicants for a new license and operators seeking an amendment or renewal of an existing license are required to provided detailed information on the facilities, equipment, and procedures used in the proposed activities. In addition, the applicant for a new license also provides an Environmental Report that discusses the effects of proposed operations on the health and safety of the public and assesses impacts to the environment. For amendment or renewal of an existing license, the original Environmental Report is supplemented, as necessary. This information is used by the NRC staff to determine whether the proposed activities will be protective of public health and safety and the environment and to fulfill NRC responsibilities under the National Environmental Policy Act (NEPA). The purpose of the Standard Review Plan (NUREG1569) is to provide the NRC staff with guidance on performing reviews of information provided by the applicant, and to ensure a consistent quality and

In Situ; Leach Uranium; In Situ; Leach Uranium; J. Lusher

2003-01-01T23:59:59.000Z

429

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

E-Print Network (OSTI)

Radiometric Modeling of Mechanical Draft Cooling Towers to Assist in the Extraction CENTER FOR IMAGING SCIENCE Title of Dissertation: Radiometric Modeling of Mechanical Draft Cooling Towers of Mechanical Draft Cooling Towers to Assist in the Extraction of their Absolute Temperature from Remote Thermal

Salvaggio, Carl

430

A comparison of line extraction algorithms using 2D range data for indoor mobile robotics  

Science Conference Proceedings (OSTI)

This paper presents an experimental evaluation of different line extraction algorithms applied to 2D laser scans for indoor environments. Six popular algorithms in mobile robotics and computer vision are selected and tested. Real scan data collected ... Keywords: 2D range data, Line extraction algorithm, Mobile robotics

Viet Nguyen; Stefan Gchter; Agostino Martinelli; Nicola Tomatis; Roland Siegwart

2007-08-01T23:59:59.000Z

431

Using a shallow linguistic kernel for drug-drug interaction extraction  

Science Conference Proceedings (OSTI)

A drug-drug interaction (DDI) occurs when one drug influences the level or activity of another drug. Information Extraction (IE) techniques can provide health care professionals with an interesting way to reduce time spent reviewing the literature for ... Keywords: Biomedical information extraction, Drug-drug interactions, Machine learning, MetaMap, Patient safety, Shallow linguistic kernel, Unified medical language system

Isabel Segura-Bedmar; Paloma MartNez; Cesar De Pablo-SNchez

2011-10-01T23:59:59.000Z

432

Extracting taxonomic relationships from on-line definitional sources using LEXING  

Science Conference Proceedings (OSTI)

We present a system which extracts the genus word and phrase from free -form definition text, entitled LEXING, for Lexical Information from Glossaries. The extractions will be used to build automatically a lexical knowledge base from on-line domain specific ... Keywords: definitions, glossaries, information retrieval, lexical knowledge bases, natural language processing, ontologies

Judith Klavans; Brian Whitman

2001-01-01T23:59:59.000Z

433

Wavelet-based feature extraction using probabilistic finite state automata for pattern classification  

Science Conference Proceedings (OSTI)

Real-time data-driven pattern classification requires extraction of relevant features from the observed time series as low-dimensional and yet information-rich representations of the underlying dynamics. These low-dimensional features facilitate in situ ... Keywords: Feature extraction, Pattern classification, Probabilistic finite state automata, Symbolic dynamics, Time series analysis

Xin Jin; Shalabh Gupta; Kushal Mukherjee; Asok Ray

2011-07-01T23:59:59.000Z

434

On accurate orientation extraction and appropriate distance measure for low-resolution palmprint recognition  

Science Conference Proceedings (OSTI)

Orientation feature has been demonstrated to be one of the most effective features for low resolution palmprint recognition. In this paper, using steerable filter, we investigate the accurate orientation extraction and appropriate distance measure problems ... Keywords: Distance measure, Feature extraction, Palmprint verification, Steerable filter

Wangmeng Zuo; Feng Yue; David Zhang

2011-04-01T23:59:59.000Z

435

Text analysis of MEDLINE for discovering functional relationships among genes: evaluation of keyword extraction weighting schemes  

Science Conference Proceedings (OSTI)

One of the key challenges of microarray studies is to derive biological insights from the gene-expression patterns. Clustering genes by functional keyword association can provide direct information about the functional links among genes. However, ... Keywords: BEA-PARTITION, DNA microarray lists, MEDLINE, bioinformatics, clustering analysis, data mining, gene clustering, gene expression patterns, information extraction, keyword association, keyword extraction, keyword weighting, text analysis

Ying Liu; Shamkant B. Navathe; Alex Pivoshenko; Venu G. Dasigi; Ray Dingledine; Brian J. Ciliax

2006-06-01T23:59:59.000Z

436

Green Vegetable Oil ProcessingChapter 5 Algae Drying and Extraction  

Science Conference Proceedings (OSTI)

Green Vegetable Oil Processing Chapter 5 Algae Drying and Extraction Processing eChapters Processing 88DDAD55B737C030383E11F3785E5D6C AOCS Press Downloadable pdf of Chapter 5 Algae Drying and Extraction fr

437

Energy extraction and particle acceleration around a rotating black hole in Horava-Lifshitz gravity  

E-Print Network (OSTI)

Energy extraction and particle acceleration around a rotating black hole in Horava-Lifshitz gravity-Lifshitz gravity is studied. The strong dependence of the extracted energy from the special range of parameters that the fundamental parameter of the Horava-Lifshitz gravity can impose a limitation on the energy of the accelerating

438

A trigram hidden Markov model for metadata extraction from heterogeneous references  

Science Conference Proceedings (OSTI)

Our objective was to explore an efficient and accurate extraction of metadata such as author, title and institution from heterogeneous references, using hidden Markov models (HMMs). The major contributions of the research were the (i) development of ... Keywords: Bibliography, Hidden Markov models, Metadata extraction, Second order, Shrinkage

Bolanle Ojokoh; Ming Zhang; Jian Tang

2011-05-01T23:59:59.000Z

439

Object extraction from T2 weighted brain MR image using histogram based gradient calculation  

Science Conference Proceedings (OSTI)

Several segmentation methods have been reported with their own pros and cons. Here we proposed a method for object extraction from T2 weighted (T2) brain magnetic resonance (MR) images. The proposed method is purely based on histogram processing for ... Keywords: Cerebrospinal fluid, Gray matter, Magnetic resonance imaging, Object extraction, White matter

Ghulam Gilanie, Muhammad Attique, Hafeez-Ullah, Shahid Naweed, Ejaz Ahmed, Masroor Ikram

2013-09-01T23:59:59.000Z

440

Extraction of voltage harmonics using multi-layer perceptron neural network  

Science Conference Proceedings (OSTI)

This paper presents a harmonic extraction algorithm using artificial neural networks for Dynamic Voltage Restorers (DVRs). The suggested algorithm employs a feed forward Multi Layer Perceptron (MLP) Neural Network with error back propagation learning ... Keywords: Dynamic Voltage Restorer, Harmonic extraction, Multi Layer Perceptron, Neural Networks

Mehmet Tmay; M. Emin Meral; K. a?atay Bayindir

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.


441

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.

442

Trends extraction and analysis for complex system monitoring and decision support  

Science Conference Proceedings (OSTI)

This paper presents an effective trend extraction procedure, based on a simple, yet powerful, representation. Its usefulness for complex system monitoring and decision support is illustrated by three examples. The method extracts semi-qualitative temporal ... Keywords: Data analysis, Diagnosis, Evaporating process, Intensive care unit, Monitoring, Operator support, Supervision, Trend analysis

Sylvie Charbonnier; Carlos Garcia-Beltan; Catherine Cadet; Sylviane Gentil

2005-02-01T23:59:59.000Z

443

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

E-Print Network (OSTI)

properties 1/8 Relationship between microalgae lipid extracts composition and rheological properties Audo M of lipids from microalgae for the production of biodiesel. Microalgae present main advantages, compared properties. Extraction and transformation steps have also to be studied taking into consideration low energy

444

A Dual-Objective Evolutionary Algorithm for Rules Extraction in Data Mining  

Science Conference Proceedings (OSTI)

This paper presents a dual-objective evolutionary algorithm (DOEA) for extracting multiple decision rule lists in data mining, which aims at satisfying the classification criteria of high accuracy and ease of user comprehension. Unlike existing approaches, ... Keywords: classification, data mining, evolutionary algorithm, rules extraction

K. C. Tan; Q. Yu; J. H. Ang

2006-06-01T23:59:59.000Z

445

Combining Information Retrieval with Information Extraction for Efficient Retrieval of Calls for Papers  

E-Print Network (OSTI)

Combining Information Retrieval with Information Extraction for Efficient Retrieval of Calls requirements on the retrieval method of conventional information retrieval systems. A new model for estimating of integrating information extraction with information retrieval are shown by comparing our system with a typical

Dunlop, Mark D.

446

NE-Rank: A Novel Graph-Based Keyphrase Extraction in Twitter  

Science Conference Proceedings (OSTI)

The massive growth of the micro-blogging service Twitter has shed the light on the challenging problem of summarizing a collection of large number of tweets. This paper attempts to extract topical key phrases that would represent topics in tweets. Due ... Keywords: Keyphrase Extraction, Graph-based Ranking, Hashtag, Twitter, PageRank, TextRank, NE-Rank

Abdelghani Bellaachia; Mohammed Al-Dhelaan

2012-12-01T23:59:59.000Z

447

Studies on the Extraction of Phenol from the Wastewater of Multi-generation System  

Science Conference Proceedings (OSTI)

Recovery of phenol from the wastewater produced in the multi-cogeneration system has been studied. Based on the experimental results and theoretical analysis, butyl acetate was selected as the extractant and 99.95% of the volatile phenols in the wastewater ... Keywords: phenol, solvent extraction, wastewater, multigeneration system, recycle

Zhenjing Shi; Mengxiang Fang; Chunguang Zhou; Qinghui Wang; Zhongyang Luo

2011-02-01T23:59:59.000Z

448

Automatic Extraction of Bilingual Terms From A Chinese-Japanese Parallel Corpus  

E-Print Network (OSTI)

Automatic Extraction of Bilingual Terms From A Chinese-Japanese Parallel Corpus Xiaorong Fan.itc.u-tokyo.ac.jp ABSTRACT This paper proposes a new approach for the automatic extraction of bilingual terms from a domain-specific bilingual parallel corpus. We combine existing monolingual term extractor and a word alignment tool

Nakagawa, Hiroshi

449

Hierarchical, perceptron-like learning for ontology-based information extraction  

Science Conference Proceedings (OSTI)

Recent work on ontology-based Information Extraction (IE) has tried to make use of knowledge from the target ontology in order to improve semantic annotation results. However, very few approaches exploit the ontology structure itself, and those that ... Keywords: hierarchical learning, ontology-based information extraction, semantic annotation

Yaoyong Li; Kalina Bontcheva

2007-05-01T23:59:59.000Z

450

A New Tool for Information Extraction and Mining from Satellite Imagery Available from Google Maps Engine  

E-Print Network (OSTI)

n.1 A New Tool for Information Extraction and Mining from Satellite Imagery Available from Google available in web mapping service applications such as Google Maps, which now provides high information extraction and mining tasks via the Google Maps application programming interface (API). In fact

Plaza, Antonio J.

451

SOLVENT EXTRACTION PROCESS FOR SEPARATING URANIUM AND PLUTONIUM FROM AQUEOUS ACIDIC SOLUTIONS OF NEUTRON IRRADIATED URANIUM  

DOE Patents (OSTI)

A solvent extraction process was developed for separating actinide elements including plutonium and uranium from fission products. By this method the ion content of the acidic aqueous solution is adjusted so that it contains more equivalents of total metal ions than equivalents of nitrate ions. Under these conditions the extractability of fission products is greatly decreased. (AEC)

Bruce, F.R.

1962-07-24T23:59:59.000Z

452

Experimental comparison of orthogonal moments as feature extraction methods for character recognition  

Science Conference Proceedings (OSTI)

The selection of a good feature extraction technique is very important in any classification problem. Moments, especially orthogonal moments, seem to be a powerful option in the case of digital image compression, description and recognition. Nowadays, ... Keywords: character recognition, feature extraction, orthogonal moments

Miguel A. Duval; Sandro Vega-Pons; Eduardo Garea

2010-11-01T23:59:59.000Z

453

Efficient BEM-based substrate network extraction in silicon SoCs  

Science Conference Proceedings (OSTI)

This paper is focused on the efficient extraction of the substrate network in complex system-on-chip designs. A boundary element method (BEM)-based approach, which employs spatial-frequency domain Green's function analysis, is considered and very high ... Keywords: Smart power integrated circuits, Substrate analysis, Substrate coupling, Substrate network extraction, System-on-chip

Paolo S. Crovetti; Franco L. Fiori

2008-12-01T23:59:59.000Z

454

PARS II Data Extraction Utility Version 8.0.20130510 Release Notes  

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

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

455

Method for extracting lanthanides and actinides from acid solutions by modification of Purex solvent  

DOE Patents (OSTI)

A process is described for the recovery of actinide and lanthanide values from aqueous solutions with an extraction solution containing an organic extractant having the formula as shown in a diagram where [phi] is phenyl, R[sup 1] is a straight or branched alkyl or alkoxyalkyl containing from 6 to 12 carbon atoms and R[sup 2] is an alkyl containing from 3 to 6 carbon atoms and phase modifiers in a water-immiscible hydrocarbon diluent. The addition of the extractant to the Purex process extractant, tri-n-butylphosphate in normal paraffin hydrocarbon diluent, will permit the extraction of multivalent lanthanide and actinide values from 0.1 to 12.0 molar acid solutions. 6 figs.

Horwitz, E.P.; Kalina, D.G.

1986-03-04T23:59:59.000Z

456

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

Science Conference Proceedings (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

457

Modeling of aqueous and organic phase speciation for solvent extraction systems  

SciTech Connect

The TRUEX (TRansUranic EXtraction) solvent extraction process has the ability to remove, separate, and recover transuranic (TRU) elements from acidic nuclear waste solutions. A computer model of the TRUEX process is currently being developed for use in flowsheet design and process optimization. The correlations that are to be used in the model for generating extraction distribution ratios are based on chemical mass action principles and require calculation of aqueous and organic phase speciation. Aqueous phase activity coefficients are calculated using methods available in the literature, while the organic phase species are treated in terms of ideal associated solution theory. This approach is demonstrated for the extraction of HNO/sub 3/, HTcO/sub 4/, and americium nitrate by n-octyl(phenyl)-N,N-diisobutylcarbamoyl-methylphosphine oxide (CMPO)---the primary metal extractant in the TRUEX solvent. 23 refs., 5 figs.

Chaiko, D.J.; Tse, Pui-Kwan; Vandegrift, G.F

1988-11-01T23:59:59.000Z

458

Method for extracting lanthanides and actinides from acid solutions by modification of purex solvent  

SciTech Connect

A process for the recovery of actinide and lanthanide values from aqueous solutions with an extraction solution containing an organic extractant having the formula: ##STR1## where .phi. is phenyl, R.sup.1 is a straight or branched alkyl or alkoxyalkyl containing from 6 to 12 carbon atoms and R.sup.2 is an alkyl containing from 3 to 6 carbon atoms and phase modifiers in a water-immiscible hydrocarbon diluent. The addition of the extractant to the Purex process extractant, tri-n-butylphosphate in normal paraffin hydrocarbon diluent, will permit the extraction of multivalent lanthanide and actinide values from 0.1 to 12.0 molar acid solutions.

Horwitz, E. Philip (Naperville, IL); Kalina, Dale G. (Naperville, IL)

1986-01-01T23:59:59.000Z

459

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

SciTech Connect

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

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

1991-06-01T23:59:59.000Z

460

Electrophoretic extraction of proteins from two-dimensional electrophoresis gel spots  

DOE Patents (OSTI)

After two-dimensional electrophoresis of proteins or the like, resulting in a polyacrylamide gel slab having a pattern of protein gel spots thereon, an individual protein gel spot is cored out from the slab, to form a gel spot core which is placed in an extraction tube, with a dialysis membrane across the lower end of the tube. Replicate gel spots can be cored out from replicate gel slabs and placed in the extraction tube. Molten agarose gel is poured into the extraction tube where the agarose gel hardens to form an immobilizing gel, covering the gel spot cores. The upper end portion of the extraction tube is filled with a volume of buffer solution, and the upper end is closed by another dialysis membrane. Upper and lower bodies of a buffer solution are brought into contact with the upper and lower membranes and are provided with electrodes connected to the positive and negative terminals of a DC power supply, thereby producing an electrical current which flows through the upper membrane, the volume of buffer solution, the agarose, the gel spot cores and the lower membrane. The current causes the proteins to be extracted electrophoretically from the gel spot cores, so that the extracted proteins accumulate and are contained in the space between the agarose gel and the upper membrane. A high percentage extraction of proteins is achieved. The extracted proteins can be removed and subjected to partial digestion by trypsin or the like, followed by two-dimensional electrophoresis, resulting in a gel slab having a pattern of peptide gel spots which can be cored out and subjected to electrophoretic extraction to extract individual peptides.

Zhang, Jian-Shi (Shanghai, CN); Giometti, Carol S. (Glenview, IL); Tollaksen, Sandra L. (Montgomery, IL)

1989-01-01T23:59:59.000Z

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


461

Extractability, plant yield and toxicity thresholds for boron in compost  

Science Conference Proceedings (OSTI)

Boron (B) is a trace element essential to crop growth in small soil concentrations (0.2-1.5ppm), yet may produce plant toxicity symptoms readily as the amount in the soil solution increases over 2ppm. Our study examined commercial compost made with coal fly-ash used to prepare growing media for cultivars of varying sensitivity (corn, beans, cucumber, peas). We examined total vs. extractable boron content and relate final visual symptoms of B-toxicity to yields and tissue concentrations. Visual toxicity effects included tip burn (corn), leaf mottling and necrosis (beans and peas) and leaf mottling and cupping (cucumbers). Fly ash added to compost increased hot-water soluble (HWS) B in proportion to rate and in dependence on pH, with 30% and 10% of total-B expressed as HWS-B at a media pH of 6 and 7.5, respectively. Biomass for bean and cucumber was significantly reduced by 45 to 55%, respectively, by addition of 33% fly-ash compost to growing media (28ppm total-B) while plant tissue-B increased by 6- to 4-fold, respectively. Economic yield depressions in compost media are evident for all crops and appeared at levels of HWS-B in compost media exceeding 5 ppm. The study underscores the need for careful management of exogenous factors that may be present in composts and suggests detailed understanding of media-pH and cultivar preferences may be required in preparation of growing media in order to reduce potential negative growth effects.

Brinton, W.F.; Evans, E.; Blewett, C. [Woods End Labs Inc., Mt. Vernon, ME (United States)

2008-04-01T23:59:59.000Z

462

Design Study of the Extraction System of the 3rd Generation ECR Ion Source  

DOE Green Energy (OSTI)

A design study for the extraction system of the 3rd Generation super conducting ECR ion source at LBNL is presented. The magnetic design of the ion source has a mirror field of 4 T at the injection and 3 T at the extraction side and a radial field of 2.4 T at the plasma chamber wall. Therefore, the ion beam formation takes place in a strong axial magnetic field. Furthermore the axial field drops from 3 T to 0.4 T within the first 30 cm. The influence of the high magnetic field on the ion beam extraction and matching to the beam line is investigated. The extraction system is first simulated with the 2D ion trajectory code IGUN with an estimated mean charge state of the extracted ion beam. These results are then compared with the 2D code AXCEL-INP, which can simulate the extraction of ions with different charge states. Finally, the influence of the strong magnetic hexapole field is studied with the three dimensional ion optics code KOBRA. The introduced tool set can be used to optimize the extraction system of the super conducting ECR ion source.

Leitner, M.A.; Lyneis, C.M.; Taylor, C.E.; Wutte, D.; Xie, Z.Q.

1998-10-06T23:59:59.000Z

463

Hydrometallurgical recovery of germanium from coal gasification fly ash. Solvent extraction method  

Science Conference Proceedings (OSTI)

This article is concerned with a simple hydrometallurgical method for the selective recovery of germanium from fly ash (FA) generated in an integrated gasification with combined cycle (IGCC) process. The method is based on the leaching of FA with water and a subsequent concentration and selective separation of germanium by a solvent method. Regarding the leaching step, the different operational conditions studied were liquid/solid (L/S) ratio and time of contact. The solvent extraction method was based on germanium complexation with catechol (CAT) in an aqueous solution followed by the extraction of the Ge-CAT complex with an extracting organic reagent diluted in an organic solvent. The main factors examined during the extraction tests were aqueous phase/organic phase (AP/OP) volumetric ratio, aqueous phase pH, amounts of reagents, and time of contact. Germanium extraction yields were higher than 90%. Alkaline and acid stripping of organic extracts were studied obtaining the best results with 1M NaOH (85%). A high-purity germanium solution was obtained. Experimental data presented in this work show that the extraction of germanium by the solvent method designed can be selective toward germanium, and this element can be effectively separated from arsenic, molybdenum, nickel, antimony, vanadium, and zinc.

Arroyo, F.; Fernandez-Pereira, C. [University of Seville, Seville (Spain)

2008-05-15T23:59:59.000Z

464

Supercritical Fluid Extraction of Plutonium and Americium from Soil using Thenoyltrifluoroacetone and Tributylphosphate Complexation  

SciTech Connect

Samples of clean soil from the source used to backfill pits at the Idaho National Engineering and Environmental Laboratory's Radioactive Waste Management Complex were spiked with Pu-239 and Am-241 to evaluate ligand-assistedsupercritical fluid extraction as a decontamination method. The actual soil in the pits has been subject to approximately three decades of weatheringsince it was originally contaminated. No surrogate soil can perfectly simulate the real event, but actual contaminated soil was not available for research purposes. However, fractionation of Am and Pu in the surrogate soil was found to be similar to that previously measured in the real soil using asequential aqueous extraction procedure. This suggests that Pu and Am behavior are similar in the two soils. The surrogate was subjected to supercritical carbon dioxide extraction, in the presence of the fluorinated beta diketone thenoyltrifluoroacetone (TTA), and tributylphosphate (TBP). As much as 69% of the Pu and 88% of the Am were removed from the soil using 3.2mol% TTA and 2.7 mol % TBP, in a single 45 minute extraction. Extraction conditions employing a 5 mol % ethanol modifier with 0.33 mol % TTA and 0.27 mol %TBP resulted in 66% Pu and 68% Am extracted. To our knowledge, this is thefirst report of the use of supercritical fluid extraction (SFE) for the removal of actinides from soil.

Mincher, Bruce Jay; Fox, Robert Vincent; Holmes, R.; Robbins, R; Boardman, C.

2001-10-01T23:59:59.000Z

465

FINAL DESIGN OF ILC RTML EXTRACTION LINE FOR SINGLE STAGE BUNCH COMPRESSOR  

SciTech Connect

The use of single stage bunch compressor (BC) in the International Linear Collider (ILC) Damping Ring to the Main Linac beamline (RTML) requires new design for the extraction line (EL). The EL located downstream of the BC will be used for both an emergency abort dumping of the beam and the tune-up continuous train-by-train extraction. It must accept both compressed and uncompressed beam with energy spread of 3.54% and 0.15% respectively. In this paper we report the final design that allowed minimizing the length of such extraction line while offsetting the beam dumps from the main line by 5m distance required for acceptable radiation level in the service tunnel. Proposed extraction line can accommodate beams with different energy spreads at the same time providing the beam size suitable for the aluminum ball dump window. We described the final design of the ILC RTML extraction line located downstream of the new single-stage bunch compressor. The extraction line is only 24m long and is capable of accepting and transmitting 220kW of beam power. The EL can be used for both fast intra-train and continual extraction, and is capable of accepting both 0.15% and 3.54% energy spread beams at 5MeV and 4.37MeV respectively.

Seletskiy, S.; Solyak, N.

2011-03-28T23:59:59.000Z

466

First calorimetric determination of heat of extraction of 248Cm in a bi-phasic system  

SciTech Connect

This report presents a summary of the work performed to meet FCR&D level 2 milestone M21SW050201, 'Complete the first calorimetric determination of heat of extraction of 248Cm in a bi-phasic system'. This work was carried out under the auspices of the Thermodynamics and Kinetics FCR&D work package. To complement previous work undertaken under this work package we have extended out heat of extraction studies by di-2-ethyl-hexyl-phosphoric acid to curium. This report also details the heat of extraction of samarium in the same system. This work was performed to not only test the methodology but also to check for consistency with the heats of extraction obtained with those in the prior literature. The heat of extraction for samarium that was obtained in this study was -9.6 kJ mol-1, which is in reasonable agreement with the previously obtained value of -10.9 kJ mol-1. The curium heat of extraction was performed under two sets of conditions and the obtained heats of extraction were in reasonable agreement with each other at -16.0 {+-} 1.1 and -16.8 {+-} 1.5 kJ mol-1.

Leigh R. Martin; Peter R. Zalupski

2011-06-01T23:59:59.000Z

467

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

Science Conference Proceedings (OSTI)

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

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

2008-07-15T23:59:59.000Z

468

Australasian Medical Journal [AMJ 2012, 5, 9, 478-481] Extractive summarisation of medical documents using domain knowledge and  

E-Print Network (OSTI)

Australasian Medical Journal [AMJ 2012, 5, 9, 478-481] 478 Extractive summarisation of medical documents using domain knowledge and corpus. Extractive summarisation of medical documents using domain knowledge and corpus

Aliod, Diego Mollá

469

Guide for conducting treatability studies under CERCLA: Solvent extraction quick reference fact sheet  

SciTech Connect

Systematically conducted, well-documented treatability studies are an important component of remedy evaluation and selection under the Superfund Program. This fact sheet focuses on solvent extraction treatability studies, and is a highly abridged version of the guide which bears the same title. This fact sheet presents an abbreviated guide for designing and implementing solvent extraction treatability studies. The fact sheet presents a description of and discusses the applicability and limitations of solvent extraction technologies and defines the prescreening and field measurement data needed to determine if treatability testing is required.

Rawe, J.

1992-08-01T23:59:59.000Z

470

Extracting Information from the World-Wide Web: A Case Study of Fuel Cell Contracts  

E-Print Network (OSTI)

this document is divided in two main parts: chapters 2 and 3 are based on the literature, while chapters 4 and 5 describe the actual work done in this research project. Chapter 2 gives a general overview of information extraction: the concepts, its history and present main research sites. Chapter 3 presents the structure of a typical information extraction system and describes different approaches used in the literature. Chapter 4 describes the system developed to fulfil the task of extracting fuel cell information, and the results are given in chapter 5. Chapter 6 concludes the document.

Instructors M. Sc; Matti Keijola; Dr. Eng Samuel Kaski; Lauri Seitsonen; Lauri Seitsonen

1999-01-01T23:59:59.000Z

471

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

472

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

473

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

474

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

475

The use of nested sampling in the extraction of polarisation observables at CLAS  

SciTech Connect

The extraction of polarisation observables from photoproduction experiments provides an insight into the spectrum of nucleon resonances and the 'missing resonance' problem. Experiments carried out at JLab, Mainz and Bonn cover a wide range of reactions, which will soon result in the first 'complete measurement' in pseudoscalar meson photoproduction. Traditionally, these measurements have been analysed using frequentist statistics, where parameters are extracted by fitting distributions. An alternative method is the application of Bayesian statistics, where any existing knowledge about the results can be used in the initial conditions. One such application of this is nested sampling. This work discusses nested sampling and how it can be applied to the extraction of spin observables.

Stefanie Lewis

2012-09-01T23:59:59.000Z

476

Ferric ion as a scavenging agent in a solvent extraction process  

DOE Patents (OSTI)

Ferric ions are added into the aqueous feed of a plutonium scrap recovery process that employs a tributyl phosphate extractant. Radiolytic degradation products of tributyl phosphate such as dibutyl phosphate form a solid precipitate with iron and are removed from the extraction stages via the waste stream. Consequently, the solvent extraction characteristics are improved, particularly in respect to minimizing the formation of nonstrippable plutonium complexes in the stripping stages. The method is expected to be also applicable to the partitioning of plutonium and uranium in a scrap recovery process.

Bruns, Lester E. (Kennewick, WA); Martin, Earl C. (Richland, WA)

1976-01-01T23:59:59.000Z

477

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

478

Extraction of Ce(III), Gd(III) and Yb(III) from citrate medium by high molecular weight amines  

SciTech Connect

High molecular weight amines have been used for the extraction of citrate complexes of Ce(III), Gd(III) and Yb(III). The effect of different variables on extraction has been studied. The citrate species extracted in the organic phase have been proposed as ((RNH/sub 3//sup +/)/sub 3/) (M(Cit)/sub 2/)/sup 3 -/.

Jain, A.; Singh, O.V.; Tandon, S.N.

1988-10-01T23:59:59.000Z

479

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

480

Integrating syntactic and semantic analysis into the open information extraction paradigm  

Science Conference Proceedings (OSTI)

In this paper we present an approach aimed at enriching the Open Information Extraction paradigm with semantic relation ontologization by integrating syntactic and semantic features into its workflow. To achieve this goal, we combine deep syntactic analysis ...

Andrea Moro, Roberto Navigli

2013-08-01T23:59:59.000Z

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