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1

Rheology Of MonoSodium Titanate (MST) And Modified Mst (mMST) Mixtures Relevant To The Salt Waste Processing Facility  

SciTech Connect (OSTI)

The Savannah River National Laboratory performed measurements of the rheology of suspensions and settled layers of treated material applicable to the Savannah River Site Salt Waste Processing Facility. Suspended solids mixtures included monosodium titanate (MST) or modified MST (mMST) at various solid concentrations and soluble ion concentrations with and without the inclusion of kaolin clay or simulated sludge. Layers of settled solids were MST/sludge or mMST/sludge mixtures, either with or without sorbed strontium, over a range of initial solids concentrations, soluble ion concentrations, and settling times.

Koopman, D. C.; Martino, C. J.; Shehee, T. C.; Poirier, M. R.

2013-07-31T23:59:59.000Z

2

URANIUM AND PLUTONIUM LOADING ONTO MONOSODIUM TITANATE MST IN TANK 50H  

SciTech Connect (OSTI)

A possible disposition pathway for the residue from the abandoned In-Tank Precipitation (ITP) sends the material from Tank 48H in increments to Saltstone via aggregation in Tank 50H. After entering Tank 50H, the amount of fissile material sorbed on MST may increase as a result of contacting waste solutions with dissolved uranium and plutonium. SRNL recommends that nuclear criticality safety evaluations use uranium and plutonium loadings onto MST of 14.0 {+-} 1.04 weight percent (wt %) for uranium and 2.79 {+-} 0.197 wt % for plutonium given the assumed streams defined in this report. These values derive from recently measured for conditions relevant to the Actinide Removal Process (ARP) and serve as conservative upper bounds for uranium and plutonium loadings during the proposed transfers of MST from Tank 48H into Tank 50H.

Hobbs, D

2006-08-31T23:59:59.000Z

3

Phase IV Simulant Testing of Monosodium Titanate Adsorption Kinetics  

SciTech Connect (OSTI)

The Salt Disposition Systems Engineering Team identified the adsorption kinetics of actinides and strontium onto monosodium titanate (MST) as a technical risk in several of the processing alternatives selected for additional evaluation in Phase III of their effort.

Hobbs, D.T.

1999-09-29T23:59:59.000Z

4

Final Report on Phase III Testing of Monosodium Titanate Adsorption Kinetics  

SciTech Connect (OSTI)

This study consisted of a statistically designed set of tests to determine the extent and rate of adsorption of strontium, plutonium, uranium, and neptunium as a function of temperature, monosodium titanate (MST) concentration, and concentrations of sodium, strontium, plutonium, uranium, and neptunium.

Hobbs, D.T.

1999-09-29T23:59:59.000Z

5

TAILORING INORGANIC SORBENTS FOR SRS STRONTIUM AND ACTINIDE SEPARATIONS: OPTIMIZED MONOSODIUM TITANATE PHASE II FINAL REPORT  

SciTech Connect (OSTI)

This document provides a final report of Phase II testing activities for the development of a modified monosodium titanate (MST) that exhibits improved strontium and actinide removal characteristics compared to the baseline MST material. The activities included determining the key synthesis conditions for preparation of the modified MST, preparation of the modified MST at a larger scale by a commercial vendor, demonstration of the strontium and actinide removal characteristics with actual tank waste supernate and measurement of filtration characteristics. Key findings and conclusions include the following. Testing evaluated three synthetic methods and eleven process parameters for the optimum synthesis conditions for the preparation on an improved form of MST. We selected the post synthesis method (Method 3) for continued development based on overall sorbate removal performance. We successfully prepared three batches of the modified MST using Method 3 procedure at a 25-gram scale. The laboratory prepared modified MST exhibited increased sorption kinetics with simulated and actual waste solutions and similar filtration characteristics to the baseline MST. Characterization of the modified MST indicated that the post synthesis treatment did not significantly alter the particle size distribution, but did significantly increase the surface area and porosity compared to the original MST. Testing indicated that the modified MST exhibits reduced affinity for uranium compared to the baseline MST, reducing risk of fissile loading. Shelf-life testing indicated no change in strontium and actinide performance removal after storing the modified MST for 12-months at ambient laboratory temperature. The material releases oxygen during the synthesis and continues to offgas after the synthesis at a rapidly diminishing rate until below a measurable rate after 4 months. Optima Chemical Group LLC prepared a 15-kilogram batch of the modified MST using the post synthesis procedure (Method 3). Performance testing with simulated and actual waste solutions indicated that the material performs as well as or better than batches of modified MST prepared at the laboratory-scale. Particle size data of the vendor-prepared modified MST indicates a broader distribution centered at a larger particle size and microscopy shows more irregular particle morphology compared to the baseline MST and laboratory prepared modified MST. Stirred-cell (i.e., dead-end) filter testing revealed similar filtration rates relative to the baseline MST for both the laboratory and vendor-prepared modified MST materials. Crossflow filtration testing indicated that with MST-only slurries, the baseline MST produced between 30-100% higher flux than the vendor-prepared modified MST at lower solids loadings and comparable flux at higher solids loadings. With sludge-MST slurries, the modified MST produced 1.5-2.2 times higher flux than the baseline MST at all solids loadings. Based on these findings we conclude that the modified MST represents a much improved sorbent for the separation of strontium and actinides from alkaline waste solutions and recommend continued development of the material as a replacement for the baseline MST for waste treatment facilities at the Savannah River Site.

Hobbs, D; Thomas Peters, T; Michael Poirier, M; Mark Barnes, M; Major Thompson, M; Samuel Fink, S

2007-06-29T23:59:59.000Z

6

REVIEW OF EXPERIMENTAL STUDIES INVESTIGATING THE RATE OF STRONTIUM AND ACTINIDE ADSORPTION BY MONOSODIUM TITANATE  

SciTech Connect (OSTI)

A number of laboratory studies have been conducted to determine the influence of mixing and mixing intensity, solution ionic strength, initial sorbate concentrations, temperature, and monosodium titanate (MST) concentration on the rates of sorbate removal by MST in high-level nuclear waste solutions. Of these parameters, initial sorbate concentrations, ionic strength, and MST concentration have the greater impact on sorbate removal rates. The lack of a significant influence of mixing and mixing intensity on sorbate removal rates indicates that bulk solution transport is not the rate controlling step in the removal of strontium and actinides over the range of conditions and laboratory-scales investigated. However, bulk solution transport may be a significant parameter upon use of MST in a 1.3 million-gallon waste tank such as that planned for the Small Column Ion Exchange (SCIX) program. Thus, Savannah River National Laboratory (SRNL) recommends completing the experiments in progress to determine if mixing intensity influences sorption rates under conditions appropriate for this program. Adsorption models have been developed from these experimental studies that allow prediction of strontium (Sr), plutonium (Pu), neptunium (Np) and uranium (U) concentrations as a function of contact time with MST. Fairly good agreement has been observed between the predicted and measured sorbate concentrations in the laboratory-scale experiments.

Hobbs, D.

2010-10-01T23:59:59.000Z

7

PILOT SCALE TESTING OF MONOSODIUM TITANATE MIXING FOR THE SRS SMALL COLUMN ION EXCHANGE PROCESS - 11224  

SciTech Connect (OSTI)

The Small Column Ion Exchange (SCIX) process is being developed to remove cesium, strontium, and select actinides from Savannah River Site (SRS) Liquid Waste using an existing waste tank (i.e., Tank 41H) to house the process. Savannah River National Laboratory (SRNL) is conducting pilot-scale mixing tests to determine the pump requirements for suspending monosodium titanate (MST), crystalline silicotitanate (CST), and simulated sludge. The purpose of this pilot scale testing is to determine the requirements for the pumps to suspend the MST particles so that they can contact the strontium and actinides in the liquid and be removed from the tank. The pilot-scale tank is a 1/10.85 linear scaled model of SRS Tank 41H. The tank diameter, tank liquid level, pump nozzle diameter, pump elevation, and cooling coil diameter are all 1/10.85 of their dimensions in Tank 41H. The pump locations correspond to the proposed locations in Tank 41H by the SCIX program (Risers B5 and B2 for two pump configurations and Risers B5, B3, and B1 for three pump configurations). The conclusions from this work follow: (i) Neither two standard slurry pumps nor two quad volute slurry pumps will provide sufficient power to initially suspend MST in an SRS waste tank. (ii) Two Submersible Mixer Pumps (SMPs) will provide sufficient power to initially suspend MST in an SRS waste tank. However, the testing shows the required pump discharge velocity is close to the maximum discharge velocity of the pump (within 12%). (iii) Three SMPs will provide sufficient power to initially suspend MST in an SRS waste tank. The testing shows the required pump discharge velocity is 66% of the maximum discharge velocity of the pump. (iv) Three SMPs are needed to resuspend MST that has settled in a waste tank at nominal 45 C for four weeks. The testing shows the required pump discharge velocity is 77% of the maximum discharge velocity of the pump. Two SMPs are not sufficient to resuspend MST that settled under these conditions.

Poirier, M.; Restivo, M.; Williams, M.; Herman, D.; Steeper, T.

2011-01-25T23:59:59.000Z

8

THE HYDROTHERMAL REACTIONS OF MONOSODIUM TITANATE, CRYSTALLINE SILICOTITANATE AND SLUDGE IN THE MODULAR SALT PROCESS: A LITERATURE SURVEY  

SciTech Connect (OSTI)

The use of crystalline silicotitanate (CST) is proposed for an at-tank process to treat High Level Waste at the Savannah River Site. The proposed configuration includes deployment of ion exchange columns suspended in the risers of existing tanks to process salt waste without building a new facility. The CST is available in an engineered form, designated as IE-911-CW, from UOP. Prior data indicates CST has a proclivity to agglomerate from deposits of silica rich compounds present in the alkaline waste solutions. This report documents the prior literature and provides guidance for the design and operations that include CST to mitigate that risk. The proposed operation will also add monosodium titanate (MST) to the supernate of the tank prior to the ion exchange operation to remove strontium and select alpha-emitting actinides. The cesium loaded CST is ground and then passed forward to the sludge washing tank as feed to the Defense Waste Processing Facility (DWPF). Similarly, the MST will be transferred to the sludge washing tank. Sludge processing includes the potential to leach aluminum from the solids at elevated temperature (e.g., 65 C) using concentrated (3M) sodium hydroxide solutions. Prior literature indicates that both CST and MST will agglomerate and form higher yield stress slurries with exposure to elevated temperatures. This report assessed that data and provides guidance on minimizing the impact of CST and MST on sludge transfer and aluminum leaching sludge.

Fondeur, F.; Pennebaker, F.; Fink, S.

2010-11-11T23:59:59.000Z

9

FURTHER DEVELOPMENT OF MODIFIED MONOSODIUM TITANATE, AN IMPROVED SORBENT FOR PRETREATMENT OF HIGH LEVEL NUCLEAR WASTE AT THE SAVANNAH RIVER SITE  

SciTech Connect (OSTI)

High-level nuclear waste produced from fuel reprocessing operations at the Savannah River Site (SRS) requires pretreatment to remove Cs-137, Sr-90, and alpha-emitting radionuclides (i.e., actinides) prior to disposal onsite as low level waste. Separation processes planned at SRS include caustic side solvent extraction, for Cs-137 removal, and sorption of Sr-90 and alpha-emitting radionuclides onto monosodium titanate (MST). The predominant alpha-emitting radionuclides in the highly alkaline waste solutions include plutonium isotopes Pu-238, Pu-239, and Pu-240. This paper describes recent results from the development of an improved titanate material that exhibits increased removal kinetics and effective capacity for Sr-90 and alpha-emitting radionuclides compared to the baseline MST material.

Taylor-Pashow, K.; Hobbs, D.; Fondeur, F.; Fink, S.

2011-01-12T23:59:59.000Z

10

FATE OF FISSILE MATERIAL BOUND TO MONOSODIUM TITANATE DURING COOPER CATALYZED PEROXIDE OXIDATION OF TANK 48H WASTE  

SciTech Connect (OSTI)

At the Savannah River Site (SRS), Tank 48H currently holds approximately 240,000 gallons of slurry which contains potassium and cesium tetraphenylborate (TPB). A copper catalyzed peroxide oxidation (CCPO) reaction is currently being examined as a method for destroying the TPB present in Tank 48H. Part of the development of that process includes an examination of the fate of the Tank 48H fissile material which is adsorbed onto monosodium titanate (MST) particles. This report details results from experiments designed to examine the potential degradation of MST during CCPO processing and the subsequent fate of the adsorbed fissile material. Experiments were conducted to simulate the CCPO process on MST solids loaded with sorbates in a simplified Tank 48H simulant. Loaded MST solids were placed into the Tank 48H simplified simulant without TPB, and the experiments were then carried through acid addition (pH adjustment to 11), peroxide addition, holding at temperature (50 C) for one week, and finally NaOH addition to bring the free hydroxide concentration to a target concentration of 1 M. Testing was conducted without TPB to show the maximum possible impact on MST since the competing oxidation of TPB with peroxide was absent. In addition, the Cu catalyst was also omitted, which will maximize the interaction of H{sub 2}O{sub 2} with the MST; however, the results may be non-conservative assuming the Cu-peroxide active intermediate is more reactive than the peroxide radical itself. The study found that both U and Pu desorb from the MST when the peroxide addition begins, although to different extents. Virtually all of the U goes into solution at the beginning of the peroxide addition, whereas Pu reaches a maximum of {approx}34% leached during the peroxide addition. Ti from the MST was also found to come into solution during the peroxide addition. Therefore, Ti is present with the fissile in solution. After the peroxide addition is complete, the Pu and Ti are found to precipitate from solution, while the U remains in solution throughout the remaining processes, including pH adjustment to 1 M free hydroxide. The Ti is likely forming a peroxotitanate material, which can then resorb the leached Pu from solution, but has a low affinity for U. Since Pu was not detected in the SEMEDS studies, it cannot be conclusively determined in what form the Pu returns to the solids; however, the Pu likely resorbed onto the peroxotitanate material. Based on the results of this experiment, Savannah River National Laboratory (SRNL) recommends the following experiments to further examine the fate of fissile material in CCPO processing of Tank 48H: (1) Repeat with full simulant matrix (organic and Cu catalyst present along with simulated radioactive sludge); and (2) Repeat of the above test after selection of final conditions (i.e., pH, temperature) if they differ from conditions tested.

Taylor-Pashow, K.

2012-08-09T23:59:59.000Z

11

Microsoft Word - eMST report - for signature.docx  

Office of Scientific and Technical Information (OSTI)

as a 15 wt % suspension in water containing 0.10-0.15 M NaOH and 100-150 mg L -1 NaNO 2 . 2 Modified monosodium titanate (mMST) used in these studies was prepared by the...

12

Sample results from the integrated salt disposition program macrobatch 6 tank 21H qualifications MST solids sample  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed experiments on qualification material for use in the Integrated Salt Disposition Program (ISDP) Batch 6 processing. As part of this qualification work, SRNL performed an Actinide Removal Process (ARP) test. From this test, the residual monosodium titanate (MST) was analyzed for radionuclide uptake. The results of these analyses are reported and are within historical precedent.

Peters, T. B.

2013-02-26T23:59:59.000Z

13

Hydrogen peroxide modified sodium titanates with improved sorption capabilities  

DOE Patents [OSTI]

The sorption capabilities (e.g., kinetics, selectivity, capacity) of the baseline monosodium titanate (MST) sorbent material currently being used to sequester Sr-90 and alpha-emitting radioisotopes at the Savannah River Site are significantly improved when treated with hydrogen peroxide; either during the original synthesis of MST, or, as a post-treatment step after the MST has been synthesized. It is expected that these peroxide-modified MST sorbent materials will have significantly improved sorption capabilities for non-radioactive cations found in industrial processes and waste streams.

Nyman, May D. (Albuquerque, NM); Hobbs, David T. (North Augusta, SC)

2009-02-24T23:59:59.000Z

14

Interim salt disposition program macrobatch 6 tank 21H qualification monosodium titanate and cesium mass transfer tests  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed experiments on qualification material for use in the Interim Salt Disposition Program (ISDP) Batch 6 processing. This qualification material was a set of six samples from Tank 21H in October 2012. This sample was used as a real waste demonstration of the Actinide Removal Process (ARP) and the Extraction-Scrub-Strip (ESS) tests process. The Tank 21H sample was contacted with a reduced amount (0.2 g/L) of MST and characterized for strontium and actinide removal at 0 and 8 hour time intervals in this salt batch. {sup 237}Np and {sup 243}Am were both observed to be below detection limits in the source material, and so these results are not reported in this report. The plutonium and uranium samples had decontamination factor (DF) values that were on par or slightly better than we expected from Batch 5. The strontium DF values are slightly lower than expected but still in an acceptable range. The Extraction, Scrub, and Strip (ESS) testing demonstrated cesium removal, stripping and scrubbing within the acceptable range. Overall, the testing indicated that cesium removal is comparable to prior batches at MCU.

Washington, A. L. II; Peters, T. B.; Fink, S. D.

2013-02-25T23:59:59.000Z

15

INVESTIGATING SUSPENSION OF MST, CST, AND SIMULATED SLUDGE SLURRIES IN A PILOT-SCALE WASTE TANK  

SciTech Connect (OSTI)

The Small Column Ion Exchange (SCIX) process is being developed to remove cesium, strontium, and actinides from Savannah River Site (SRS) Liquid Waste using an existing waste tank (i.e., Tank 41H) to house the process. Savannah River National Laboratory (SRNL) is conducting pilot-scale mixing tests to determine the pump requirements for suspending and resuspending monosodium titanate (MST), crystalline silicotitanate (CST), and simulated sludge. The purpose of this pilot scale testing is for the pumps to resuspend the MST, CST, and simulated sludge particles so that they can be removed from the tank, and to suspend the MST so it can contact strontium and actinides. The pilot-scale tank is a 1/10.85 linear scaled model of Tank 41H. The tank diameter, tank liquid level, pump nozzle diameter, pump elevation, and cooling coil diameter are all 1/10.85 of their dimensions in Tank 41H. The pump locations correspond to the proposed locations in Tank 41H by the SCIX program (Risers B5, B3, and B1). Previous testing showed that three Submersible Mixer Pumps (SMPs) will provide sufficient power to initially suspend MST in an SRS waste tank, and to resuspend MST that has settled in a waste tank at nominal 45 C for four weeks. The conclusions from this analysis are: (1) Three SMPs will be able to resuspend more than 99.9% of the MST and CST that has settled for four weeks at nominal 45 C. The testing shows the required pump discharge velocity is 84% of the maximum discharge velocity of the pump. (2) Three SMPs will be able to resuspend more than 99.9% of the MST, CST, and simulated sludge that has settled for four weeks at nominal 45 C. The testing shows the required pump discharge velocity is 82% of the maximum discharge velocity of the pump. (3) A contact time of 6-12 hours is needed for strontium sorption by MST in a jet mixed tank with cooling coils, which is consistent with bench-scale testing and actinide removal process (ARP) operation.

Poirier, M.; Qureshi, Z.; Restivo, M.; Steeper, T.; Williams, M.

2011-05-24T23:59:59.000Z

16

Sample Results From The Interim Salt Disposition Program Macrobatch 7 Tank 21H Qualification MST Solids Sample  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed experiments on qualification material for use in the Interim Salt Disposition Program (ISDP) Batch 7 processing. The Marcrobatch 7 material was received with visible fine particulate solids, atypical for these samples. The as received material was allowed to settle for a period greater than 24 hours. The supernatant was then decanted and utilized as our clarified feed material. As part of this qualification work, SRNL performed an Actinide Removal Process (ARP) test using the clarified feed material. From this test, the residual monosodium titanate (MST) was analyzed for radionuclide uptake after filtration from H-Tank Farm (HTF) feed salt solution. The results of these analyses are reported and are within historical precedent.

Washington, A. L. II; Peters, T. B.

2013-09-19T23:59:59.000Z

17

SELECTIVE REMOVAL OF STRONTIUM AND CESIUM FROM SIMULATED WASTE SOLUTION WITH TITANATE ION-EXCHANGERS IN A FILTER CARTRIDGE CONFIGURATIONS-12092  

SciTech Connect (OSTI)

Experimental results for the selective removal of strontium and cesium from simulated waste solutions with monosodium titanate (MST) and crystalline silicotitanate (CST) laden filter cartridges are presented. In these proof-of-principle tests, effective uptake of both Sr-85 and Cs-137 were observed using ion-exchangers in this filter cartridge configuration. At low salt simulant conditions, the instantaneous decontamination factor (D{sub F}) for Sr-85 with MST impregnated filter membrane cartridges measured 26, representing 96% Sr-85 removal efficiency. On the other hand, the Sr-85 instantaneous D{sub F} with co-sintered active MST cartridges measured 40 or 98% Sr-85 removal efficiency. Strontium-85 removal with the MST impregnated membrane cartridges and CST impregnated membrane cartridges, placed in series arrangement, produced an instantaneous decontamination factor of 41 compared to an instantaneous decontamination factor of 368 for strontium-85 with co-sintered active MST cartridges and co-sintered active CST cartridges placed in series. Overall, polyethylene co-sintered active titanates cartridges performed as well as titanate impregnated filter membrane cartridges in the uptake of strontium. At low ionic strength conditions, there was a significant uptake of Cs-137 with co-sintered CST cartridges. Tests results with CST impregnated membrane cartridges for Cs-137 decontamination are currently being re-evaluated. Based on these preliminary findings we conclude that incorporating MST and CST sorbents into membranes represent a promising method for the semi-continuous removal of radioisotopes of strontium and cesium from nuclear waste solutions.

Oji, L.; Martin, K.; Hobbs, D.

2011-11-10T23:59:59.000Z

18

PILOT-SCALE TESTING OF THE SUSPENSION OF MST, CST, AND SIMULATED SLUDGE SLURRIES IN A SLUDGE TANK  

SciTech Connect (OSTI)

The Small Column Ion Exchange (SCIX) process is being developed to remove cesium, strontium, and actinides from Savannah River Site (SRS) Liquid Waste using an existing waste tank (i.e., Tank 41H) to house the process. Following strontium, actinide, and cesium removal, the concentrated solids will be transported to a sludge tank (i.e., monosodium titanate (MST)/sludge solids to Tank 42H or Tank 51H and crystalline silicotitanate (CST) to Tank 40H) for eventual transfer to the Defense Waste Processing Facility (DWPF). Savannah River National Laboratory (SRNL) is conducting pilot-scale mixing tests to determine the pump requirements for mixing MST, CST, and simulated sludge. The purpose of this pilot scale testing is to determine the pump requirements for mixing MST and CST with sludge in a sludge tank and to determine whether segregation of particles occurs during settling. Tank 40H and Tank 51H have four Quad Volute pumps; Tank 42H has four standard pumps. The pilot-scale tank is a 1/10.85 linear scaled model of Tank 40H. The tank diameter, tank liquid level, pump nozzle diameter, pump elevation, and cooling coil diameter are all 1/10.85 of their dimensions in Tank 40H. The pump locations correspond to the current locations in Tank 40H (Risers B2, H, B6, and G). The pumps are pilot-scale Quad Volute pumps. Additional settling tests were conducted in a 30 foot tall, 4 inch inner diameter clear column to investigate segregation of MST, CST, and simulated sludge particles during settling.

Poirier, M.; Qureshi, Z.; Restivo, M.; Steeper, T.; Williams, M.; Herman, D.

2011-08-02T23:59:59.000Z

19

MST - UW Plasma Physics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation InInformation InExplosion Monitoring:Home|Physics Research High-Energy- Density PhysicsMST

20

SELECTIVE REMOVAL OF STRONTIUM AND CESIUM FROM SIMULATED WASTE SOLUTION WITH TITANATE ION-EXCHANGERS IN A FILTER CARTRIDGE CONFIGURATIONS-12092  

SciTech Connect (OSTI)

Experimental results for the selective removal of strontium and cesium from simulated waste solutions with monosodium titanate and crystalline silicotitanate laden filter cartridges are presented. In these proof-of-principle tests, effective uptake of both strontium-85 and cesium-137 were observed using ion-exchangers in this filter cartridge configuration. At low salt simulant conditions, the instantaneous decontamination factor for strontium-85 with monosodium titanate impregnated filter membrane cartridges measured 26, representing 96% strontium-85 removal efficiency. On the other hand, the strontium-85 instantaneous decontamination factor with co-sintered active monosodium titanate cartridges measured 40 or 98% Sr-85 removal efficiency. Strontium-85 removal with the monosodium titanate impregnated membrane cartridges and crystalline silicotitanate impregnated membrane cartridges, placed in series arrangement, produced an instantaneous decontamination factor of 41 compared to an instantaneous decontamination factor of 368 for strontium-85 with co-sintered active monosodium titanate cartridges and co-sintered active crystalline silicotitanate cartridges placed in series. Overall, polyethylene co-sintered active titanates cartridges performed as well as titanate impregnated filter membrane cartridges in the uptake of strontium. At low ionic strength conditions, there was a significant uptake of cesium-137 with co-sintered crystalline silicotitanate cartridges. Tests results with crystalline silicotitanate impregnated membrane cartridges for cesium-137 decontamination are currently being re-evaluated. Based on these preliminary findings we conclude that incorporating monosodium titanate and crystalline silicotitanate sorbents into membranes represent a promising method for the semicontinuous removal of radioisotopes of strontium and cesium from nuclear waste solutions.

Oji, L.; Martin, K.; Hobbs, D.

2012-01-03T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Tour - MST - UW Plasma Physics  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System BurstLongTitan Titan is aSurface Area

22

Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate...  

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

diffusion in Lead Zirconate Titanate and Barium Titanate. Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate. Abstract: Hydrogen is a potential clean-burning,...

23

Electron Bernstein Wave Studies in MST  

SciTech Connect (OSTI)

The overdense plasma in an RFP prevents electromagnetic waves from propagating past the edge, however use of the electron Bernstein wave (EBW) has the potential to heat and drive current in the plasma. MHD simulations have demonstrated that resistive tearing mode stability is very sensitive to gradients in the edge current density profile allowing EBW to potentially be a stabilizing influence. A new MW level experiment is being commissioned on MST to evaluate the potential use of the EBW for current profile control on the RFP. The development of new equipment includes a 5.5 GHz klystron driven by a novel switchmode power supply. A quartz window has been constructed and coupling with a cylindrical molybdenum wave guide antenna has been studied. Due to the steep edge density gradient in the RFP, it is possible to efficiently couple to the EBW with O or X mode launch. The EBW is strongly damped at the electron cyclotron resonance where it couples to the electron gyromotion and alters the electron distribution. Either Fisch-Boozer or Ohkawa current drive mechanisms can be activated to drive off axis current in the plasma. Preliminary experiments have been performed to verify high power coupling and understand heating via observed x-ray emission when compared to Fokker-Plank modeling in CQL3D.

Seltzman, Andrew H.; Anderson, Jay K.; Nonn, Paul D.; Kauffold, Jason X.; Forest, Cary B. [University of Wisconsin-Madison, Dept. Of Physics, 1150 University Ave., Madison, WI 53706 (United States); Diem, Stephanie J. [Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831 (United States)

2011-12-23T23:59:59.000Z

24

The TITAN reversed-field-pinch fusion reactor study  

SciTech Connect (OSTI)

This report discusses the following topics: overview of titan-2 design; titan-2 fusion-power-core engineering; titan-2 divertor engineering; titan-2 tritium systems; titan-2 safety design and radioactive-waste disposal; and titan-2 maintenance procedures.

Not Available

1990-01-01T23:59:59.000Z

25

Sawteeth in the MST reversed field pinch  

SciTech Connect (OSTI)

A dynamo mechanism has been used in astrophysics to explain the self-generation of the magnetic fields observed throughout the universe. This same type of phenomenon is believed to occur in the reversed field pinch (RFP) plasmas. The RFP dynamo has been a major theoretical and experimental investigation since the first observations of the self-reversal process in early pinch research. A discrete dynamo event has been observed in the experimental RFP plasmas; this event is termed the RFP sawtooth. This phenomenon is similar to the sawtooth phenomenon observed in tokamak plasmas, but the two events differ in many respects. Both events are a result of the inward diffusion of the plasma current density. This causes the plasma to become unstable to the m = 1 tearing modes. It has been shown theoretically that the nonlinear interaction of these modes can generate the reversed toroidal field in the RFP. This thesis is a study of the RFP sawtooth phenomenon on the MST RFP. This includes experimental observations as well as 1-D numerical simulations of the sawtooth rise-time. During the rise-time of the sawtooth, the plasma is undergoing a purely diffusive process -- no dynamo is occurring during this phase. The dynamo only occurs during the sawtooth crash. During the rise-time, the m = 1 modes are observed to grow, and nonlinear interactions are observed prior to the sawtooth crash. At the time of the crash, many of the plasma profiles are flattened; these include the current density, the plasma temperature and the plasma density. The period of the sawteeth is observed to increase with the plasma current, as well as the magnetic Reynolds number, S.

Beckstead, J.A.

1990-09-01T23:59:59.000Z

26

Molecular Science and Technology (MST) Program The Taiwan International Graduate Program (TIGP), Academia Sinica  

E-Print Network [OSTI]

Molecular Science and Technology (MST) Program The Taiwan International Graduate Program (TIGP Science and Technology (MST) graduate program: (1) Chemical dynamics and molecular spectroscopy, and transient species, and covers mechanisms involved in photodissociation, reactive scattering, energy transfer

27

Assessment of performing an MST strike in Tank 21H  

SciTech Connect (OSTI)

Previous Savannah River National Laboratory (SRNL) tank mixing studies performed for the Small Column Ion Exchange (SCIX) project have shown that 3 Submersible Mixer Pumps (SMPs) installed in Tank 41 are sufficient to support actinide removal by MST sorption as well as subsequent resuspension and removal of settled solids. Savannah River Remediation (SRR) is pursuing MST addition into Tank 21 as part of the Large Tank Strike (LTS) project. The preliminary scope for LTS involves the use of three standard slurry pumps (installed in N, SE, and SW risers) in a Type IV tank. Due to the differences in tank size, internal interferences, and pump design, a separate mixing evaluation is required to determine if the proposed configuration will allow for MST suspension and strontium and actinide sorption. The author performed the analysis by reviewing drawings for Tank 21 [W231023] and determining the required cleaning radius or zone of influence for the pumps. This requirement was compared with previous pilot-scale MST suspension data collected for SCIX that determined the cleaning radius, or zone of influence, as a function of pump operating parameters. The author also reviewed a previous Tank 50 mixing analysis that examined the ability of standard slurry pumps to suspend sludge particles. Based on a review of the pilot-scale SCIX mixing tests and Tank 50 pump operating experience, three standard slurry pumps should be able to suspend sludge and MST to effectively sorb strontium and actinides onto the MST. Using the SCIX data requires an assumption about the impact of cooling coils on slurry pump mixing. The basis for this assumption is described in this report. Using the Tank 50 operating experience shows three standard slurry pumps should be able to suspend solids if the shear strength of the settled solids is less than 160 Pa. Because Tank 21 does not contain cooling coils, the shear strength could be larger.

Poirier, Michael R.

2014-09-29T23:59:59.000Z

28

Titan Laser Facility  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformation Desert Southwest RegionatSearchScheduled System BurstLongTitan Titan is a two-beam laser

29

Proceedings of MST10, 13-20 May 2003, Piura, Peru 1 RETRIEVAL OF ATMOSPHERIC STATIC STABILITY FROM MST  

E-Print Network [OSTI]

MST RADAR RETURN SIGNAL POWER David A Hooper½ ¾ , Johan Arvelius½ and Kerstin Stebel½ ¿ ½ Swedish Institute of Space Physics, Box 812, 981 28, Kiruna, SWEDEN ¾ now at Rutherford Appleton Laboratory, Chilton phenomena including fronts, gravity waves and turbulence. Moreover, the variations of ¾ as a function

Kirkwood, Sheila

30

PHOTOCATALYTIC AND PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS  

E-Print Network [OSTI]

HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS F.HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS

Wagner, F.T.

2012-01-01T23:59:59.000Z

31

Propane on Titan  

E-Print Network [OSTI]

We present the first observations of propane (C$_3$H$_8$) on Titan that unambiguously resolve propane features from other numerous stratospheric emissions. This is accomplished using a $R=\\lambda/\\delta\\lambda\\approx10^5$ spectrometer (TEXES) to observe propane's $\

H. G. Roe; T. K. Greathouse; M. J. Richter; J. H. Lacy

2003-09-23T23:59:59.000Z

32

Crystalline titanate catalyst supports  

DOE Patents [OSTI]

A series of new crystalline titanates (CT) are shown to have considerable potential as catalyst supports. For Pd supported catalyst, the catalytic activity for pyrene hydrogenation was substantially different depending on the type of CT, and one was substantially more active than Pd on hydrous titanium oxide (HTO). For 1-hexene hydrogenation the activities of the new CTs were approximately the same as for the hydrous metal oxide supports.

Anthony, R.G.; Dosch, R.G.

1993-01-05T23:59:59.000Z

33

Titan Recreation-Titan Bowl and Billiards Student Engagement Report  

E-Print Network [OSTI]

physical fitness and overall wellness. Titan Recreation also provides opportunities for cooperative in conjunction with Upcoming US Presidential Elections. Potential activities include: Presidential Debate Viewing Parties and Election Results Viewing Events held in the Titan Bowl & Billiards' TV Lounge. · Develop

de Lijser, Peter

34

REVIEW OF ACTINIDE AND STRONTIUM LOADING DATA FOR MST AND MMST  

SciTech Connect (OSTI)

SRNL reviewed the relevant data from MST and mMST fissile loading studies to determine if further studies were required. With respect to MST, SRNL found that the published results adequately bound the expected conditions that Small Column Ion Exchange (SCIX) process will operate under. The lack of strontium data does not represent an issue as strontium is not relevant to criticality. There is no threat to criticality safety from the lack of strontium loading data. However, SRNL proposes a single test with MST to ensure that future SCIX operations are conservatively bounded and strontium maximum loading is understood. With respect to attempts to maximally load mMST, SRNL's knowledge on actinide and strontium loading is limited to uranium behavior. mMST has a very weak affinity for uranium, and even extended contact time at high uranium concentration shows minimal loading onto mMST. This leaves questions about the ability to load plutonium, neptunium and strontium. SRNL proposes to perform two tests with mMST to ensure that questions on plutonium, neptunium, and strontium sorption are answered, as well as ensuring that future mMST operations are conservatively bounded.

Peters, T.; Hobbs, D.; Fink, S.

2010-10-20T23:59:59.000Z

35

Enhanced dielectric properties from barium strontium titanate films with strontium titanate buffer layers  

E-Print Network [OSTI]

Enhanced dielectric properties from barium strontium titanate films with strontium titanate buffer in their PE state. One of the leading material candidates for tunable materials is barium strontium titanate

Alpay, S. Pamir

36

MST eNews: Los Alamos National Laboratory  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: VegetationEquipment Surfaces and InterfacesAdministration -Lowell L.FallU . S . D e p aMST e-News

37

Materials Science & Technology, MST: Los Alamos National Laboratory  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fund LasDubey selectedContract Research Advanced MaterialsMST

38

Finland HF and Esrange MST radar observations of polar mesosphere summer echoes  

E-Print Network [OSTI]

Finland HF and Esrange MST radar observations of polar mesosphere summer echoes Tadahiko Ogawa1 (200x) xx:1­8 Finland HF and Esrange MST radar observations of polar mesosphere summer echoes Tadahiko in Finland are presented. The echoes were detected at four frequencies of 9, 11, 13 and 15 MHz at slant

Kirkwood, Sheila

39

The TITAN reversed-field-pinch fusion reactor study  

SciTech Connect (OSTI)

This report discusses research on the titan-1 fusion power core. The major topics covered are: titan-1 fusion-power-core engineering; titan-1 divertor engineering; titan-1 tritium systems; titan-1 safety design and radioactive-waste disposal; and titan-1 maintenance procedures.

Not Available

1990-01-01T23:59:59.000Z

40

Neutral beam heating of a RFP plasma in MST  

SciTech Connect (OSTI)

Electron temperature is observed to rise due to neutral beam injection (NBI) in the Madison Symmetric Torus (MST). Heating is observed to be 100 {+-} 50 eV in the core of 200 kA plasmas. This is the first definitive measurement of auxiliary heating of a reversed-field pinch (RFP). This heating is consistent with a 1D classical model which was developed. This 1D model calculates the evolving thermal conductivity and ohmic power input profiles during enhanced confinement, and can calculate NBI deposition and classical fast ion diffusion and slowing. The predicted temperature change is consistent with measured beam heating both during and after enhanced confinement, which is consistent with previous observations that fast ions are well confined and behave roughly classically in the RFP.

Waksman, J.; Anderson, J. K.; Nornberg, M. D.; Parke, E.; Reusch, J. A. [Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706-1390 (United States); Liu, D. [Department of Physics and Astronomy, University of California, Irvine, California 92697-4575 (United States); Fiksel, G. [Laboratory for Laser Energetics, University of Rochester, 250 E. River Rd, Rochester, New York 14623-1299 (United States); Davydenko, V. I.; Ivanov, A. A.; Stupishin, N.; Deichuli, P. P. [Budker Institute of Nuclear Physics, 11, Akademika Lavrentieva Prospect, Novosibirsk 630090 (Russian Federation); Sakakita, H. [National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)

2012-12-15T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Magnetic Reconnection in the MST Reversed Field Pinch  

SciTech Connect (OSTI)

Magnetic field line reconnection is a process whereby magnetic field lines which are otherwise topologically preserved by, and frozen into, a plasma can break and reconnect to form field lines with different topologies. It plays a significant role in a wide variety of plasmas, including stellar, space and laboratory plasmas. The focus of this dissertation is the underlying dynamics of reconnection in one particular kind of laboratory plasma: the Reversed Field Pinch (RFP). Specifically, this dissertation reports measurements, made using a pair of insertable diagnostics in conjunction with arrays of magnetic sensing coils positioned near the plasma surface, of the spatial structure of the magnetic and parallel current density fluctuations associated with reconnection in the edge of MST. At least 4 significant results are obtained form such measurements. First we observe direct evidence of reconnection which takes the form of tearing modes in an RFP. Specifically we measure a (radial) magnetic field fluctuation that causes reconnection in the so-called reversal surface, or q = 0 surface, in the edge of MST. Notably this evidence of reconnection at the reversal surface is the first of its kind in an RFP. Second, we measure the radial width of the associated current sheet, or fluctuation in the component of the current density parallel to the equilibrium magnetic field. Such current sheets are a characteristic feature of the reconnection process but their radial widths are sensitive to the specific effects that allow reconnection to occur sometimes call non-ideal effects because reconnection is forbidden by ideal MHD. We compare the observed width to those expected from models of reconnection that incorporate different non-ideal effects in Ohm's law. In particular we see that the observed width is significantly larger than those expected form resistivity in the context of linearly unstable tearing modes and electron inertia. It is a factor of a few larger than the width expected form the electron pressure gradient effect. It is significantly smaller than the width expected from the ion inertia, but this width is not expected to be relevant to a strongly magnetized plasma such as an RFP. Notably it is comparable to the width of the magnetic island produced by the associated tearing mode. This is consistent with expectation for saturated or fully developed resistive tearing modes such as MST is believed to exhibit. It is also consistent with the broadening of a smaller width current sheet through current transport due to parallel streaming of charge carriers (along the field lines of the associated island). Third we obtain estimates of the radial charge transport or radial current density due to streaming charge of carriers along magnetic field lines that results from reconnection in the edge of MST. We find that in contradiction with the theoretical expectation for isolated tearing modes it is non-vanishing and in fact large enough to imply both the existence of another charge transport mechanism to maintain charge neutrality and a significant difference in the radial ion and electron particle fluxes due to parallel streaming of particles. Fourth we interpret the flux surface average of j and b as a J x B force density on the plasma. We observe in agreement with theory and observation for interacting tearing modes in an RFP that the radial structure of the force density during sawtooth crashes is such as to flatten the equilibrium radial gradient in toroidal velocity. We observe also that it is sufficiently large as to imply the existence of other force densities on the plasma.

Crocker, N.E.

2001-06-01T23:59:59.000Z

42

TITAN TECH TALK INFORMATION TECHNOLOGY  

E-Print Network [OSTI]

TITAN TECH TALK INFORMATION TECHNOLOGY VOLUME I, ISSUE II AUGUST 2013 INSIDE THIS ISSUE Pg. 6 Mobile Yes Yes Yes PC Yes TOP 4 REASONS to use iFullerton: With more than 20 features, you may be asking management system, powered by Moodle, gives you access to your classes. 2. MAPS First day at Cal State

de Lijser, Peter

43

System studies of rf current drive for MST  

SciTech Connect (OSTI)

Two rf schemes are being studied on the MST reversed field pinch for their potential in current profile control experiments. MHD modeling has shown that a substantial externally-driven off axis parallel current can improve stability of the dominant core tearing modes. A radially localized axisymmetric population of fast electrons has been observed by SXR emission during LH injection (100kW at 800MHz), and is consistent with CQL3D modeling which predicts a small driven current. Computational work suggests that doubling the input power will statistically improve the LH-induced SXR signal to background ratio, and that about 2MW of injected power (an order of magnitude increase) will drive enough current for stabilization of tearing modes. Additionally, a 1 MW 5.5 GHz electron Bernstein wave (EBW) experiment is under construction, which utilizes a very simple and compact antenna compatible with the demands of the RFP. EBW allows access to electron cyclotron heating and current drive in the overdense plasma. Coupling of the external electromagnetic wave to the EBW has been demonstrated, and initial tests at {approx}100kW power have produced a small, localized xray flux consistent with rf heating and high diffusivity of fast electrons. Computational work is currently underway to answer the very important questions of how much power is required, and what level of electron diffusivity is tolerable, to generate a consequential amount of EBW current.

Anderson, J. K.; Burke, D. R.; Forest, C. B.; Goetz, J. A.; Hendries, E. R.; Seltzman, A. H.; Thomas, M. A. [Department of Physics, University of Wisconsin, Madison, WI (United States); Diem, S. [Oak Ridge National Laboratory, Oak Ridge TN (United States); Harvey, R. W. [CompX, Del Mar, CA (United States); Kaufman, M. C. [Department of Physics, University of Wisconsin, Madison, WI (United States); Oak Ridge National Laboratory, Oak Ridge, TN (United States)

2011-12-23T23:59:59.000Z

44

Silico-titanates and their methods of making and using  

DOE Patents [OSTI]

Noval silico-titanates and the methods of making and using the said titanates are disclosed. Nb-doped silico-titanates are particularly useful for selectively removing cesuim from radioactive wastes.

Anthony, Rayford G. (College Station, TX); Dosch, Robert G. (late of Albuquerque, NM); Philip, C. V. (College Station, TX)

2002-01-01T23:59:59.000Z

45

Response of Strontium Titanate to Ion and Electron Irradiation...  

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

Strontium Titanate to Ion and Electron Irradiation. Response of Strontium Titanate to Ion and Electron Irradiation. Abstract: Response of strontium titanate (SrTiO3) to ion and...

46

DECONTAMINATION FACTORS AND FILTRATION FLUX IMPACT TO ARP AT REDUCED MST CONCENTRATION  

SciTech Connect (OSTI)

Tank Farm and Closure Engineering is evaluating changes to the Actinide Removal Process facility operations to decrease the MST concentration from 0.4 g/L to 0.2 g/L and the contact time from 12 hours to between 6 and 8 hours. For this evaluation, SRNL reviewed previous datasets investigating the performance of MST at 0.2 g/L in salt solutions ranging from 4.5 to 7.5 M in sodium concentration. In general, reducing the MST concentration from 0.4 to 0.2 g/L and increasing the ionic strength from 4.5 to 7.5 M in sodium concentration will decrease the measured decontamination factors for plutonium, neptunium, uranium and strontium. The decontamination factors as well as single standard deviation values for each sorbate are reported. These values are applicable within the sorbate and sodium concentrations used in the experimental measurements. Decreasing the MST concentration in the ARP from 0.4 g/L to 0.2 g/L will produce an increase in the filter flux, and could lead to longer operating times between filter cleaning. The increase in flux is a function of a number of operating parameters, and is difficult to quantify. However, it is estimated that the reduction in MST could result in a reduction of filtration time of up to 20%.

Hobbs, D.

2012-06-27T23:59:59.000Z

47

Flipping the switch on magnetism in strontium titanate  

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

Flipping the switch on magnetism in strontium titanate Flipping the switch on magnetism in strontium titanate Researchers have found a way to magnetize this material using light,...

48

MHD simulation of RF current drive in MST  

SciTech Connect (OSTI)

Auxiliary heating and current drive using RF waves such as the electron Bernstein wave (EBW) promises to advance the performance of the reversed field pinch (RFP). In previous computational work [1], a hypothetical edge-localized current drive is shown to suppress the tearing activity which governs the macroscopic transport properties of the RFP. The ideal conditions for tearing stabilization include a reduced toroidal induction, and precise width and radial position of the Gaussian-shaped external current drive. In support of the EBW experiment on the Madison Symmetric Torus, an integrated modeling scheme now incorporates ray tracing and Fokker-Plank predictions of auxiliary current into single fluid MHD. Simulations at low Lundquist number (S ? 10{sup 4}) generally agree with the previous work; significantly more burdensome simulations at MST-like Lundquist number (S ? 310{sup 6}) show unexpected results. The effect on nonlinearly saturated current profile by a particular RF-driven external force decreases in magnitude and widens considerably as the Lundquist number increases toward experimental values. Simulations reproduce the periodic current profile relaxation events observed in experiment (sawteeth) in the absence of current profile control. Reduction of the tearing mode amplitudes is still observable; however, reduction is limited to periods between the large bursts of magnetic activity at each sawtooth. The sawtoothing pattern persists with up to 10 MW of externally applied RF power. Periods with prolonged low tearing amplitude are predicted with a combination of external current drive and a reduced toroidal loop voltage, consistent with previous conclusions. Finally, the resistivity profile is observed to have a strong effect on the optimal externally driven current profile for mode stabilization.

Hendries, E. R.; Anderson, J. K.; Forest, C. B.; Reusch, J. A.; Seltzman, A. H.; Sovinec, C. R. [University of Wisconsin, Madison WI (United States); Diem, S. [Oak Ridge National Laboratory, Oak Ridge TN (United States); Harvey, R. W. [CompX, Del Mar, CA (United States)

2014-02-12T23:59:59.000Z

49

Dynamics of Titan's thermosphere H. Rishbetha, b,  

E-Print Network [OSTI]

; 5. vertical wind shears are limited by molecular vis- cosity, so that wind speeds are almost height; accepted 23 June 1999 Abstract We estimate the wind speeds in Titan's thermosphere by considering. Assuming a day± night temperature dierence of 20 K, we ®nd that Titan's thermospheric wind speed

Yelle, Roger V.

50

Thermodynamics of Nanoscale Calcium and Strontium Titanate Perovskites  

E-Print Network [OSTI]

Energetics of Magnesium, Strontium, and Barium DopedNanoscale Calcium and Strontium Titanate Perovskites Sulata

Sahu, Sulata Kumari

2013-01-01T23:59:59.000Z

51

An Exponential Improvement on the MST Heuristic for Minimum Energy Broadcasting  

E-Print Network [OSTI]

in energy saving. A naturally arising issue in ad hoc wireless networks is that of supporting communicationAn Exponential Improvement on the MST Heuristic for Minimum Energy Broadcasting in Ad Hoc Wireless Abstract. In this paper we present a new approximation algorithm for the Minimum Energy Broadcast Routing

Caragiannis, Ioannis

52

Strengths and limitations of MST radar measurements of middle-atmosphere winds  

E-Print Network [OSTI]

levels of the atmosphere. 1 Introduction Radars used for atmospheric wind measurements cover a broadStrengths and limitations of MST radar measurements of middle-atmosphere winds W. K. Hocking for many years to measure atmospheric motions over a wide range of altitudes, from ground level up

Paris-Sud XI, Université de

53

Titan Platform | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective JumpInc., 2010)PtyO'reillyOpen EnergyTinTitan

54

Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate  

SciTech Connect (OSTI)

Hydrogen is a potential clean-burning, next-generation fuel for vehicle and stationary power. Unfortunately, hydrogen is also well known to have serious materials compatibility issues in metals, polymers, and ceramics. Piezoelectric actuator materials proposed for low-cost, high efficiency high-pressure hydrogen internal combustion engines (HICE) are known to degrade rapidly in hydrogen. This limits their potential use and poses challenges for HICE. Hydrogen-induced degradation of piezoelectrics is also an issue for low-pressure hydrogen passivation in ferroelectric random access memory. Currently, there is a lack of data in the literature on hydrogen species diffusion in piezoelectrics in the temperature range appropriate for the HICE as charged via a gaseous route. We present 1HNMR quantification of the local hydrogen species diffusion within lead zirconate titanate and barium titanate on samples charged by exposure to high-pressure gaseous hydrogen ?32?MPa. Results are discussed in context of theoretically predicted interstitial hydrogen lattice sites and aqueous charging experiments from existing literature.

Alvine, Kyle J.; Vijayakumar, M.; Bowden, Mark E.; Schemer-Kohrn, Alan L.; Pitman, Stan G.

2012-08-28T23:59:59.000Z

55

Strontium Titanate DC Electric Field Switchable and Tunable Bulk Acoustic Wave Solidly Mounted Resonator  

E-Print Network [OSTI]

Strontium Titanate DC Electric Field Switchable and Tunable Bulk Acoustic Wave Solidly Mounted Abstract - A voltage switchable/tunable strontium titanate solidly mounted BAW resonator was implemented films, piezoelectric resonators. I. INTRODUCTION Strontium titanate (STO) and barium strontium titanate

York, Robert A.

56

Titan Student Centers Fiscal Year 20142015 Budget  

E-Print Network [OSTI]

#12; Titan Student Centers Fiscal Year 20142015 Budget California State University, Fullerton This budget has been approved by the ASI Board of Directors, the ASI% Budgeted # of Paying Students 7,500 37,250 34

de Lijser, Peter

57

Solar cycle modulation of Titan's ionosphere  

E-Print Network [OSTI]

During the six Cassini Titan flybys T83T88 (May 2012 to November 2012) the electron density in the ionospheric peak region, as measured by the radio and plasma wave science instrument/Langmuir probe, has increased ...

Edberg, N. J. T.; Andrews, D. J.; Shebanits, O.; Å gren, K.; Wahlund, J.-E.; Opgenoorth, H. J.; Cravens, Thomas Edward; Girazian, Z.

2013-08-13T23:59:59.000Z

58

Parallel contingency statistics with Titan.  

SciTech Connect (OSTI)

This report summarizes existing statistical engines in VTK/Titan and presents the recently parallelized contingency statistics engine. It is a sequel to [PT08] and [BPRT09] which studied the parallel descriptive, correlative, multi-correlative, and principal component analysis engines. The ease of use of this new parallel engines is illustrated by the means of C++ code snippets. Furthermore, this report justifies the design of these engines with parallel scalability in mind; however, the very nature of contingency tables prevent this new engine from exhibiting optimal parallel speed-up as the aforementioned engines do. This report therefore discusses the design trade-offs we made and study performance with up to 200 processors.

Thompson, David C.; Pebay, Philippe Pierre

2009-09-01T23:59:59.000Z

59

A modified LandauDevonshire thermodynamic potential for strontium titanate  

E-Print Network [OSTI]

A modified Landau­Devonshire thermodynamic potential for strontium titanate G. Sheng, Y. L. Li, J Landau­Devonshire thermodynamic potential for strontium titanate G. Sheng,1,a Y. L. Li,2 J. X. Zhang,1,b of the Landau energy coefficients and report a modified thermodynamic potential for bulk strontium titanate

Chen, Long-Qing

60

NORTHWESTERN UNIVERSITY Reconstructions on Strontium Titanate (110) Surfaces  

E-Print Network [OSTI]

NORTHWESTERN UNIVERSITY Reconstructions on Strontium Titanate (110) Surfaces at Various Annealing August 2011 #12;1 Abstract Reconstructions on Strontium Titanate (110) Surfaces at Various Annealing Conditions Alicia Loon Strontium titanate (SrTiO3) is a perovskite complex metal oxide used in many different

Shull, Kenneth R.

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Synthesis of Single-Crystalline Perovskite Nanorods Composed of Barium Titanate and Strontium Titanate  

E-Print Network [OSTI]

Synthesis of Single-Crystalline Perovskite Nanorods Composed of Barium Titanate and Strontium (BaTi[OCH(CH3)2]6) and strontium titanium isopropoxide (SrTi[OCH(CH3)2]6), were prepared following

Heller, Eric

62

A green synthesis of a layered titanate, potassium lithium titanate; lower temperature solid-state reaction and improved materials performance  

SciTech Connect (OSTI)

A layered titanate, potassium lithium titanate, with the size range from 0.1 to 30 m was prepared to show the effects of the particle size on the materials performance. The potassium lithium titanate was prepared by solid-state reaction as reported previously, where the reaction temperature was varied. The reported temperature for the titanate preparation was higher than 800 C, though 600 C is good enough to obtain single-phase potassium lithium titanate. The lower temperature synthesis is cost effective and the product exhibit better performance as photocatalysts due to surface reactivity. - Graphical abstract: Finite particle of a layered titanate, potassium lithium titanate, was prepared by solid-state reaction at lower temperature to show modified materials performance. Display Omitted - Highlights: Potassium lithium titanate was prepared by solid-state reaction. Lower temperature reaction resulted in smaller sized particles of titanate. 600 C was good enough to obtain single phased potassium lithium titanate. The product exhibited better performance as photocatalyst.

Ogawa, Makoto, E-mail: waseda.ogawa@gmail.com [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Department of Earth Sciences, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Morita, Masashi, E-mail: m-masashi@y.akane.waseda.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Igarashi, Shota, E-mail: uxei_yoshi_yoshi@yahoo.co.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan); Sato, Soh, E-mail: rookie_so_sleepy@yahoo.co.jp [Graduate School of Creative Science and Engineering, Waseda University, 1-6-1 Nishiwaseda, Shinjuku-ku, Tokyo 169-8050 (Japan)

2013-10-15T23:59:59.000Z

63

MST 1: Proceedings of a conference on the integration of mathematics, science and technology in precollege education  

SciTech Connect (OSTI)

Example MST activities examined here show: (1) an inquiry-driven learning stimulus, involving (2) the synthesis of concepts in math, science and technology, through (3) the application of the scientific method and engineering problem solving/test protocols, and provoking (4) a stimulus for further exploration. A semi-exploratory learning approach offered background aimed at enabling participants to take meaningful courses of investigation; this approach must be balanced by maintaining contact with framework content standards. On the whole, the philosophy underlying the MST learning approach--as envisioned in the draft NYS Framework, and embodied in the example activities--is strongly endorsed. This endorsement is broad-based: those represented include teachers of mathematics, science, and technology, and school district administrators--in roughly equal numbers. Discussion centers not on whether the MST approach should be pursued, but on what is involved in doing it. Teams of conference participants were given time to plan or extend MST initiatives in their own districts. Outlines of the initiatives proposed by ten of the teams are disseminated herein.

Swyler, K. [ed.

1995-11-01T23:59:59.000Z

64

Tracking Phaselock Loop Characteristics with a VCO Using a Barium Strontium Titanate (BST)  

E-Print Network [OSTI]

Tracking Phaselock Loop Characteristics with a VCO Using a Barium Strontium Titanate (BST) Thin Strontium Titanate (BST) varactors utilized in a VCO demonstrate unique tuning characteristics compared

65

Very Stable Electron Field Emission From Strontium Titanate CoatedCarb...  

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

Very Stable Electron Field Emission From Strontium Titanate CoatedCarbon Nanotube Matrices With Low Emission Thresholds. Very Stable Electron Field Emission From Strontium Titanate...

66

Photoluminescence dynamics in strontium titanate A. Rubano,1  

E-Print Network [OSTI]

Photoluminescence dynamics in strontium titanate A. Rubano,1 F. Ciccullo,1 D. Paparo,2 F. Miletto dynamics of electron-hole pairs of pure and n-doped strontium titanate (STO) bulk samples after an intense is attempted. PACS numbers: 78.55.-m, 71.35.Ee, 73.50.Gr, 78.47.+p I. INTRODUCTION Strontium titanate, SrTiO3

Marrucci, Lorenzo

67

Titan propels GE wind turbine research into new territory | ornl...  

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

Titan propels GE wind turbine research into new territory January 17, 2014 The amount of global electricity supplied by wind, the world's fastest growing energy source, is expected...

68

DETECTION OF PROPENE IN TITAN'S STRATOSPHERE  

SciTech Connect (OSTI)

The Voyager 1 flyby of Titan in 1980 gave a first glimpse of the chemical complexity of Titan's atmosphere, detecting many new molecules with the infrared interferometer spectrometer (IRIS). These included propane (C{sub 3}H{sub 8}) and propyne (CH{sub 3}C{sub 2}H), while the intermediate-sized C{sub 3}H {sub x} hydrocarbon (C{sub 3}H{sub 6}) was curiously absent. Using spectra from the Composite Infrared Spectrometer on Cassini, we show the first positive detection of propene (C{sub 3}H{sub 6}) in Titan's stratosphere (5? significance), finally filling the three-decade gap in the chemical sequence. We retrieve a vertical abundance profile from 100-250 km, that varies slowly with altitude from 2.0 0.8 ppbv at 125 km, to 4.6 1.5 ppbv at 200 km. The abundance of C{sub 3}H{sub 6} is less than both C{sub 3}H{sub 8} and CH{sub 3}C{sub 2}H, and we remark on an emerging paradigm in Titan's hydrocarbon abundances whereby alkanes > alkynes > alkenes within the C{sub 2}H {sub x} and C{sub 3}H {sub x} chemical families in the lower stratosphere. More generally, there appears to be much greater ubiquity and relative abundance of triple-bonded species than double-bonded, likely due to the greater resistance of triple bonds to photolysis and chemical attack.

Nixon, C. A.; Flasar, F. M. [Planetary Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [Planetary Systems Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Jennings, D. E. [Detector Systems Branch, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)] [Detector Systems Branch, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Bzard, B.; Vinatier, S.; Coustenis, A. [LESIA, Observatoire de Paris, CNRS, 5 Place Jules Janssen, F-92195 Meudon Cedex (France)] [LESIA, Observatoire de Paris, CNRS, 5 Place Jules Janssen, F-92195 Meudon Cedex (France); Teanby, N. A. [School of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol BS8 1RJ (United Kingdom)] [School of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol BS8 1RJ (United Kingdom); Sung, K. [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, CA 91109 (United States)] [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, CA 91109 (United States); Ansty, T. M. [Department of Space Science, Cornell University, Ithaca, NY 14853 (United States)] [Department of Space Science, Cornell University, Ithaca, NY 14853 (United States); Irwin, P. G. J. [Atmospheric, Oceanic and Planetary Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom)] [Atmospheric, Oceanic and Planetary Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford OX1 3PU (United Kingdom); Gorius, N. [IACS, Catholic University of America, Washington, DC 20064 (United States)] [IACS, Catholic University of America, Washington, DC 20064 (United States); Cottini, V. [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States)] [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States)

2013-10-10T23:59:59.000Z

69

Titan's Inventory of Organic Surface Materials Ralph D. Lorenz1,*  

E-Print Network [OSTI]

1 Titan's Inventory of Organic Surface Materials Ralph D. Lorenz1,* , Karl L. Mitchell2 , Randolph observations now permit an initial assessment of the inventory of two classes, presumed to be organic, of Titan observed, of which dozens are each estimated to contain more hydrocarbon liquid than the entire known oil

Paris-Sud XI, Université de

70

Multiferroic Domain Dynamics in Strained Strontium Titanate A. Vasudevarao,1  

E-Print Network [OSTI]

Multiferroic Domain Dynamics in Strained Strontium Titanate A. Vasudevarao,1 A. Kumar,1 L. Tian,1 J (Received 19 June 2006; published 21 December 2006) Multiferroicity can be induced in strontium titanate to the ferroelectric mm2 phase, followed by a transition to a ferroelastic-ferroelectric mm2 phase in a strontium

Gopalan, Venkatraman

71

34 McCormick / spring Lead mechanical engineer, Titan Aerospace  

E-Print Network [OSTI]

and solar panels. Anyway, I learned about the job through a solar car listserv. I contacted him and becameCormick: What does Titan Aerospace do? Cornew: Titan Aerospace is a startup that designs and builds solar-powered unmanned aerial vehicles, or drones. Our long-term goal is to build solar-powered UAVs that could stay

Chen, Wei

72

Electron temperature of Titan's sunlit ionosphere M. Galand,1  

E-Print Network [OSTI]

Electron temperature of Titan's sunlit ionosphere M. Galand,1 R. V. Yelle,2 A. J. Coates,3 H spacecraft and assess the ionization and electron heating sources in Titan's sunlit ionosphere. We compare CAPS electron spectra with spectra produced by an electron transport model based on the INMS neutral

Yelle, Roger V.

73

Magnetic phase composition of strontium titanate implanted with iron ions  

SciTech Connect (OSTI)

Highlights: Black-Right-Pointing-Pointer The origin of RT-ferromagnetism in iron implanted strontium titanate. Black-Right-Pointing-Pointer Metallic iron nanoclusters form during implantation and define magnetic behaviour. Black-Right-Pointing-Pointer Paramagnetic at room temperature iron-substituted strontium titanate identified. -- Abstract: Thin magnetic films were synthesized by means of implantation of iron ions into single-crystalline (1 0 0) substrates of strontium titanate. Depth-selective conversion electron Moessbauer spectroscopy (DCEMS) indicates that origin of the samples magnetism is {alpha}-Fe nanoparticles. Iron-substituted strontium titanate was also identified but with paramagnetic behaviour at room temperature. Surface magneto-optical Kerr effect (SMOKE) confirms that the films reveal superparamagnetism (the low-fluence sample) or ferromagnetism (the high-fluence sample), and demonstrate absence of magnetic in-plane anisotropy. These findings highlight iron implanted strontium titanate as a promising candidate for composite multiferroic material and also for gas sensing applications.

Dulov, E.N., E-mail: evgeny.dulov@ksu.ru [Kazan Federal University, 420008 Kazan (Russian Federation); Ivoilov, N.G.; Strebkov, O.A. [Kazan Federal University, 420008 Kazan (Russian Federation)] [Kazan Federal University, 420008 Kazan (Russian Federation); Tagirov, L.R. [Kazan Federal University, 420008 Kazan (Russian Federation) [Kazan Federal University, 420008 Kazan (Russian Federation); Zavoisky Physico-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, 420029 Kazan (Russian Federation); Nuzhdin, V.I. [Zavoisky Physico-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, 420029 Kazan (Russian Federation)] [Zavoisky Physico-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, 420029 Kazan (Russian Federation); Khaibullin, R.I. [Kazan Federal University, 420008 Kazan (Russian Federation) [Kazan Federal University, 420008 Kazan (Russian Federation); Zavoisky Physico-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, 420029 Kazan (Russian Federation); Kazan, S. [Department of Physics, Gebze Institute of Technology, Gebze, 41400 Kocaeli (Turkey)] [Department of Physics, Gebze Institute of Technology, Gebze, 41400 Kocaeli (Turkey); Mikailzade, F.A. [Department of Physics, Gebze Institute of Technology, Gebze, 41400 Kocaeli (Turkey) [Department of Physics, Gebze Institute of Technology, Gebze, 41400 Kocaeli (Turkey); Institute of Physics, Azerbaijan National Academy of Sciences, H. Javid Av. 33, AZ 1143, Baku (Azerbaijan)

2011-12-15T23:59:59.000Z

74

Scalable k-means statistics with Titan.  

SciTech Connect (OSTI)

This report summarizes existing statistical engines in VTK/Titan and presents both the serial and parallel k-means statistics engines. It is a sequel to [PT08], [BPRT09], and [PT09] which studied the parallel descriptive, correlative, multi-correlative, principal component analysis, and contingency engines. The ease of use of the new parallel k-means engine is illustrated by the means of C++ code snippets and algorithm verification is provided. This report justifies the design of the statistics engines with parallel scalability in mind, and provides scalability and speed-up analysis results for the k-means engine.

Thompson, David C.; Bennett, Janine C.; Pebay, Philippe Pierre

2009-11-01T23:59:59.000Z

75

Polar state in freestanding strontium titanate nanoparticles  

SciTech Connect (OSTI)

Monodispersed strontium titanate nanoparticles were prepared and studied in detail. It is found that ?10?nm as-prepared stoichiometric nanoparticles are in a polar structural state (possibly with ferroelectric properties) over a broad temperature range. A tetragonal structure, with possible reduction of the electronic hybridization, is found as the particle size is reduced. In the 10?nm particles, no change in the local Ti-off centering is seen between 20 and 300?K. The results indicate that nanoscale motifs of SrTiO{sub 3} may be utilized in data storage as assembled nano-particle arrays in applications where chemical stability, temperature stability, and low toxicity are critical issues.

Tyson, Trevor A., E-mail: tyson@njit.edu, E-mail: sswong@bnl.gov, E-mail: Stanislaus.wong@stonybrook.edu; Yu, Tian [Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102 (United States); Croft, Mark [Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 (United States); Scofield, Megan E.; Bobb-Semple, Dara [Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States); Tao, Jing [Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973 (United States); Jaye, Cherno; Fischer, Daniel [Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States); Wong, Stanislaus S., E-mail: tyson@njit.edu, E-mail: sswong@bnl.gov, E-mail: Stanislaus.wong@stonybrook.edu [Department of Chemistry, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States); Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)

2014-09-01T23:59:59.000Z

76

Titan Electric Corporation | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of Inspector GeneralDepartmentAUDIT REPORTOpenWende NewSowitec do Brasil EnergiaSurPVTip for workingTitan

77

Titan I Wind Farm | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective JumpInc., 2010)PtyO'reillyOpen EnergyTinTitan I

78

Titan Energy Systems Ltd | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)TillmanMunicipal Electric Util JumpTitan

79

Cloud activity on Titan between July 2004 and December 2007: S. Rodriguez et al. Global circulation as the main source of cloud activity on Titan2  

E-Print Network [OSTI]

that Titan's equator-to-pole thermal contrast is34 overestimated in the models and that Titan's atmosphere Mapping Spectrometer18 (VIMS) onboard Cassini provides a unique oppor-38 tunity to regularly in VIMS images (cf. Fig. 1) and applied it to 10,000 images of Titan. These41 images encompass several

80

Identification And Characterization Of The Solids Found In Extraction Contactor SEP-401 In June 2012  

SciTech Connect (OSTI)

The Modular Caustic-Side Solvent Extraction Unit (MCU) recently conducted an outage that included maintenance on the centrifugal contactors. Operations personnel observed solids or deposits in two contactors and attempted to collect samples for analyses by Savannah River National Laboratory (SRNL). The residues found in Extraction Contactor SEP-401 are a mixture of amorphous silica, aluminosilicate, titanium, and debris from low alloy steel. The solids contain low concentrations of plutonium and strontium. These isotopes are associated with the titanium that came from the monosodium titanate (MST) added in the Actinide Removal Process (ARP) most likely as leached Ti from the MST that precipitated subsequently in MCU. An attempt was also made to obtain samples from the contents of Wash Contactor SEP-702. However, sampling provide ineffective.

Fondeur, F. F.; Fink, S. D.

2012-12-10T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

DWPF FLOWSHEET STUDIES WITH SIMULANT TO DETERMINE THE IMPACT OF NEXT GENERATION SOLVENT ON THE CPC PROCESS AND GLASS FORMULATION  

SciTech Connect (OSTI)

As a part of the Actinide Removal Process (ARP)/Modular Caustic Side Solvent Extraction Unit (MCU) Life Extension Project, a next generation solvent (NGS), a new strip acid, and modified monosodium titanate (mMST) will be deployed. The NGS is comprised of four components: 0.050 M MaxCalix (extractant), 0.50 M Cs-7SB (modifier), 0.003 M guanidine-LIX-79, with the balance ({approx}74 wt%) being Isopar{reg_sign} L. The strip acid will be changed from dilute nitric acid to dilute boric acid (0.01 M). Because of these changes, experimental testing with the next generation solvent and mMST was required to determine the impact of these changes in 512-S and Defense Waste Processing Facility (DWPF) operations, as well as Chemical Process Cell (CPC), glass formulation activities, and melter operations. Because of these changes, experimental testing with the next generation solvent and mMST is required to determine the impact of these changes. A Technical Task Request (TTR) was issued to support the assessments of the impact of the next generation solvent and mMST on the downstream DWPF flowsheet unit. The TTR identified five tasks to be investigated: (1) CPC Flowsheet Demonstration for NGS; (2) Solvent Stability for DWPF CPC Conditions; (3) Glass Formulation Studies; (4) Boron Volatility and Melt Rate; and (5) CPC Flowsheet Demonstration for mMST.

Newell, J.; Peeler, D.; Edwards, T.; Hay, M.; Stone, M.

2011-06-29T23:59:59.000Z

82

Nano- sized strontium titanate metal oxide semiconductor oxygen gas sensors.  

E-Print Network [OSTI]

??The project focuses on strontium titanate (SrTiO3> material, a very important material for oxygen sensors. The advantages of the material are low cost and stability (more)

Hu, Ying.

2008-01-01T23:59:59.000Z

83

The TITAN reversed-field-pinch fusion reactor study  

SciTech Connect (OSTI)

This paper on titan plasma engineering contains papers on the following topics: reversed-field pinch as a fusion reactor; parametric systems studies; magnetics; burning-plasma simulations; plasma transient operations; current drive; and physics issues for compact RFP reactors.

Not Available

1990-01-01T23:59:59.000Z

84

Pb nanowire formation on Al/lead zirconate titanate surfaces...  

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

pattering of the Al film. Citation: Alvine KJ, V Shutthanandan, BW Arey, CM Wang, WD Bennett, and SG Pitman.2012."Pb nanowire formation on Allead zirconate titanate surfaces in...

85

Estimating erosional exhumation on Titan from drainage network morphology  

E-Print Network [OSTI]

, to estimate cumulative erosion into an initially rough surface. We calibrate this method with a numerical the Cassini spacecraft. While Titan does not host a global surface ocean, Synthetic Aperture Radar (SAR

Perron, Taylor

86

Tuesday, March 24, 2009 POSTER SESSION I: TANTALIZING TITAN  

E-Print Network [OSTI]

Reflectance from the Cassini Visual and Infrared Mapping Spectrometer [#1863] Using a ground calibration. Paillou P. Radar-Bright Channels on Titan [#1533] The Cassini SAR observed channels in the Xanadu region

Rathbun, Julie A.

87

Performance of Kepler GTX Titan GPUs and Xeon Phi System  

E-Print Network [OSTI]

NVIDIA's new architecture, Kepler improves GPU's performance significantly with the new streaming multiprocessor SMX. Along with the performance, NVIDIA has also introduced many new technologies such as direct parallelism, hyper-Q and GPU Direct with RDMA. Apart from other usual GPUs, NVIDIA also released another Kepler 'GeForce' GPU named GTX Titan. GeForce GTX Titan is not only good for gaming but also good for high performance computing with CUDA. Nevertheless, it is remarkably cheaper than Kepler Tesla GPUs. We investigate the performance of GTX Titan and find out how to optimize a CUDA code appropriately for it. Meanwhile, Intel has launched its new many integrated core (MIC) system, Xeon Phi. A Xeon Phi coprocessor could provide similar performance with NVIDIA Kepler GPUs theoretically but, in reality, it turns out that its performance is significantly inferior to GTX Titan.

Jeong, Hwancheol; Pak, Jeonghwan; Choi, Kwang-jong; Park, Sang-Hyun; Yoo, Jun-sik; Kim, Joo Hwan; Lee, Joungjin; Lee, Young Woo

2013-01-01T23:59:59.000Z

88

Performance of Kepler GTX Titan GPUs and Xeon Phi System  

E-Print Network [OSTI]

NVIDIA's new architecture, Kepler improves GPU's performance significantly with the new streaming multiprocessor SMX. Along with the performance, NVIDIA has also introduced many new technologies such as direct parallelism, hyper-Q and GPU Direct with RDMA. Apart from other usual GPUs, NVIDIA also released another Kepler 'GeForce' GPU named GTX Titan. GeForce GTX Titan is not only good for gaming but also good for high performance computing with CUDA. Nevertheless, it is remarkably cheaper than Kepler Tesla GPUs. We investigate the performance of GTX Titan and find out how to optimize a CUDA code appropriately for it. Meanwhile, Intel has launched its new many integrated core (MIC) system, Xeon Phi. A Xeon Phi coprocessor could provide similar performance with NVIDIA Kepler GPUs theoretically but, in reality, it turns out that its performance is significantly inferior to GTX Titan.

Hwancheol Jeong; Weonjong Lee; Jeonghwan Pak; Kwang-jong Choi; Sang-Hyun Park; Jun-sik Yoo; Joo Hwan Kim; Joungjin Lee; Young Woo Lee

2013-11-04T23:59:59.000Z

89

Titan Simulates Earthquake Physics Necessary for Safer Building...  

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

simulations took 24 hours to run on Jaguar, but the higher frequency, higher resolution simulations took only five and a half hours on Titan. And considering the "big one" could...

90

Direct printing of lead zirconate titanate thin films  

E-Print Network [OSTI]

Thus far, use of lead zirconate titanate (PZT) in MEMS has been limited due to the lack of process compatibility with existing MEMS manufacturing techniques. Direct printing of thin films eliminates the need for photolithographic ...

Bathurst, Stephen, 1980-

2008-01-01T23:59:59.000Z

91

The TITAN Reversed-Field Pinch fusion reactor study  

SciTech Connect (OSTI)

The TITAN Reversed-Field Pinch (RFP) fusion reactor study is a multi-institutional research effort to determine the technical feasibility and key developmental issues of an RFP fusion reactor, especially at high power density, and to determine the potential economics, operations, safety, and environmental features of high-mass-power-density fusion systems. The TITAN conceptual designs are DT burning, 1000 MWe power reactors based on the RFP confinement concept. The designs are compact, have a high neutron wall loading of 18 MW/m{sup 2} and a mass power density of 700 kWe/tonne. The inherent characteristics of the RFP confinement concept make fusion reactors with such a high mass power density possible. Two different detailed designs have emerged: the TITAN-I lithium-vanadium design, incorporating the integrated-blanket-coil concept; and the TITAN-II aqueous loop-in-pool design with ferritic steel structure. This report contains a collection of 16 papers on the results of the TITAN study which were presented at the International Symposium on Fusion Nuclear Technology. This collection describes the TITAN research effort, and specifically the TITAN-I and TITAN-II designs, summarizing the major results, the key technical issues, and the central conclusions and recommendations. Overall, the basic conclusions are that high-mass power-density fusion reactors appear to be technically feasible even with neutron wall loadings up to 20 MW/m{sup 2}; that single-piece maintenance of the FPC is possible and advantageous; that the economics of the reactor is enhanced by its compactness; and the safety and environmental features need not to be sacrificed in high-power-density designs. The fact that two design approaches have emerged, and others may also be possible, in some sense indicates the robustness of the general findings.

Not Available

1988-03-01T23:59:59.000Z

92

Determination of the Impact of Glycolate on ARP and MCU Operations  

SciTech Connect (OSTI)

Savannah River Remediation (SRR) is evaluating an alternate flowsheet for the Defense Waste Processing Facility (DWPF) using glycolic acid as a reductant. An important aspect of the development of the glycolic acid flowsheet is determining if glycolate has any detrimental downstream impacts. Testing was performed to determine if there is any impact to the strontium and actinide sorption by monosodium titanate (MST) and modified monosodium titanate (mMST) or if there is an impact to the cesium removal, phase separation, or coalescer performance at the Modular Caustic-Side Solvent Extraction Processing Unit (MCU). Sorption testing was performed using both MST and modified MST (mMST) in the presence of 5000 and 10,000 ppm (mass basis) glycolate. 10,000 ppm is the estimated bounding concentration expected in the DWPF recycle stream based on DWPF melter flammable gas model results. The presence of glycolate was found to slow the removal of Sr and Pu by MST, while increasing the removal rate of Np. Results indicate that the impact is a kinetic effect, and the overall capacity of the material is not affected. There was no measurable effect on U removal at either glycolate concentration. The slower removal rates for Sr and Pu at 5000 and 10,000 ppm glycolate could result in lower DF values for these sorbates in ARP based on the current (12 hours) and proposed (8 hours) contact times. For the highest glycolate concentration used in this study, the percentage of Sr removed at 6 hours of contact decreased by 1% and the percentage of Pu removed decreased by nearly 7%. The impact may prove insignificant if the concentration of glycolate that is returned to the tank farm is well below the concentrations tested in this study. The presence of glycolate also decreased the removal rates for all three sorbates (Sr, Pu, and Np) by mMST. Similar to MST, the results for mMST indicate that the impact is a kinetic effect, and the overall capacity of the material is not affected. The presence of glycolate did not change the lack of affinity of mMST for U. Pre-contacting the MST or mMST with glycolate did not have a significant effect on the performance of the materials when compared to tests having the same concentration of glycolate present in the simulant. These findings suggest that the glycolate is likely influencing removal by sorbate complexation and not by depositing onto or forming a film on the surface of the MST solids. Since the DF values are salt batch dependent, it is not possible to a priori quantify the impacts of glycolate on future processing campaigns. However, we recommend that the impacts of glycolate be evaluated during each salt batch qualification when a final processing concentration is defined, and recommendations can then be made on how to mitigate negative impacts, if needed. Impacts to the performance of the MST or mMST could be mitigated by increasing contact time or increasing sorbent concentrations. Testing was performed to determine if there is an impact to the cesium removal at Modular Caustic-Side Solvent Extraction Processing Unit (MCU). An Extraction-Scrub-Strip (ESS) test routine was used to simulate cesium removal at the MCU. For this, SRNL performed three ESS tests, using the same basic aqueous waste simulant and solvent. For one test, SRNL added 5000 ppm (mass basis) of glycolate and added 10,000 ppm of glycolate to a second test. A control test contained no glycolate. The results of all three tests were virtually identical for all the extraction, scrub and strip tests.

Taylor-Pashow, K. M.L.; Peters, T. B.; Fondeur, F. F.; Shehee, T. C.; Washington, A. L.

2012-12-13T23:59:59.000Z

93

Improved-confinement plasmas at high temperature and high beta in the MST RFP  

SciTech Connect (OSTI)

We have increased substantially the electron and ion temperatures, the electron density, and the total beta in plasmas with improved energy confinement in the Madison Symmetric Torus (MST). The improved confinement is achieved with a well-established current profile control technique for reduction of magnetic tearing and reconnection. A sustained ion temperature > 1 keV is achieved with intensified reconnection-based ion heating followed immediately by current profile control. In the same plasmas, the electron temperature reaches 2 keV, and the electron thermal diffusivity drops to about 2 m(2) s(-1). The global energy confinement time is 12 ms. This and the reported temperatures are the largest values yet achieved in the reversed-field pinch (RFP). These results were attained at a density similar to 10(19) m(-3). By combining pellet injection with current profile control, the density has been quadrupled, and total beta has nearly doubled to a record value of about 26%. The Mercier criterion is exceeded in the plasma core, and both pressure-driven interchange and pressure-driven tearing modes are calculated to be linearly unstable, yet energy confinement is still improved. Transient momentum injection with biased probes reveals that global momentum transport is reduced with current profile control. Magnetic reconnection events drive rapid momentum transport related to large Maxwell and Reynolds stresses. Ion heating during reconnection events occurs globally, locally, or not at all, depending on which tearing modes are involved in the reconnection. To potentially augment inductive current profile control, we are conducting initial tests of current drive with lower-hybrid and electron-Bernstein waves.

Chapman, B. E. [University of Wisconsin, Madison; Ahn, J. W. [University of Wisconsin, Madison; Almagri, A. F. [University of Wisconsin, Madison; Anderson, J. [University of Wisconsin, Madison; Combs, Stephen Kirk [ORNL; Foust, Charles R [ORNL; Kaufman, M. [University of Wisconsin, Madison

2009-01-01T23:59:59.000Z

94

Strain engineered barium strontium titanate for tunable thin film resonators H. Khassaf,1  

E-Print Network [OSTI]

Strain engineered barium strontium titanate for tunable thin film resonators H. Khassaf,1 N of epitaxial (001) barium strontium titanate (BST) films are computed as functions of composition, misfit

Alpay, S. Pamir

95

Pyroelectric properties of barium strontium titanate films: Effect of thermal M. W. Cole,2  

E-Print Network [OSTI]

Pyroelectric properties of barium strontium titanate films: Effect of thermal stresses J. Zhang,1 M pyroelectric properties of 001 -textured polycrystalline barium strontium titanate BaxSr1-xTiO3, BST films

Alpay, S. Pamir

96

Dielectric tunability of ,,110... oriented barium strontium titanate epitaxial films on ,,100... orthorhombic substrates  

E-Print Network [OSTI]

Dielectric tunability of ,,110... oriented barium strontium titanate epitaxial films on ,,100 materials such as barium strontium titanate Ba1-xSrxTiO3 BST have emerged as leading candidates

Alpay, S. Pamir

97

Dielectric and pyroelectric properties of barium strontium titanate films on orthorhombic substrates with ,,110.../ /,,100... epitaxy  

E-Print Network [OSTI]

Dielectric and pyroelectric properties of barium strontium titanate films on orthorhombic: 10.1063/1.2729474 I. INTRODUCTION Thin films of barium strontium titanate BaxSr1-xTiO3, BST

Alpay, S. Pamir

98

Photo of the Week: Cold as Ice - Using Titan to Build More Efficient...  

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

Cold as Ice - Using Titan to Build More Efficient Wind Turbines Photo of the Week: Cold as Ice - Using Titan to Build More Efficient Wind Turbines January 10, 2014 - 2:53pm Addthis...

99

Estimates of fluvial erosion on Titan from sinuosity of lake shorelines  

E-Print Network [OSTI]

Titan has few impact craters, suggesting that its surface is geologically young. Titan's surface also has abundant landforms interpreted to be fluvial networks. Here we evaluate whether fluvial erosion has caused significant ...

Tewelde, Yodit

100

Electrocaloric properties of epitaxial strontium titanate films I. B. Misirlioglu,2  

E-Print Network [OSTI]

Electrocaloric properties of epitaxial strontium titanate films J. Zhang,1 I. B. Misirlioglu,2 S. P; published online 1 June 2012) The electrocaloric (EC) response of strontium titanate thin films is computed

Alpay, S. Pamir

Note: This page contains sample records for the topic "monosodium titanate mst" 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

The equilibrium crystal shape of strontium titanate and its relationship to the grain boundary plane distribution  

E-Print Network [OSTI]

1 The equilibrium crystal shape of strontium titanate and its relationship to the grain crystal shape (ECS) of a model system, strontium titanate, is compared with the grain boundary plane distribution (GBPD) as a function of temperature. Strontium titanate has a pronounced surface energy anisotropy

Rohrer, Gregory S.

102

The effect of stress on the dielectric properties of barium strontium titanate thin films  

E-Print Network [OSTI]

The effect of stress on the dielectric properties of barium strontium titanate thin films T. M Barium strontium titanate thin films are being developed as capacitors in dynamic random access memories to their large permittivities, barium strontium titan- ate BST bulk ceramics have long been used to make high

Suo, Zhigang

103

Dielectric nonlinearity and stochastic effects in strontium titanate Alp T. Findikoglua)  

E-Print Network [OSTI]

Dielectric nonlinearity and stochastic effects in strontium titanate Alp T. Findikoglua) Materials-film superconducting YBa2Cu3O7 electrodes. The substrate is strontium titanate, whose nonlinear dielectric properties American Institute of Physics. DOI: 10.1063/1.1477278 Nonlinear dielectrics such as strontium titanate STO

Lythe, Grant

104

Impact of thermal strain on the dielectric constant of sputtered barium strontium titanate thin films  

E-Print Network [OSTI]

Impact of thermal strain on the dielectric constant of sputtered barium strontium titanate thin, California 93106 Received 6 November 2001; accepted for publication 10 January 2002 Barium strontium titanate: magnesium oxide, strontium titanate, sapphire, silicon, and vycor glass. These substrates were chosen

York, Robert A.

105

High tunability barium strontium titanate thin films for rf circuit applications  

E-Print Network [OSTI]

High tunability barium strontium titanate thin films for rf circuit applications N. K. Pervez,a) P) Large variations in the permittivity of rf magnetron sputtered thin-film barium strontium titanate have/cm. © 2004 American Institute of Physics. [DOI: 10.1063/1.1818724] Barium strontium titanate (BST) is a solid

York, Robert A.

106

Microwave dielectric properties of graded barium strontium titanate films M. W. Cole,1,a  

E-Print Network [OSTI]

Microwave dielectric properties of graded barium strontium titanate films M. W. Cole,1,a C. V strontium titanate BaxSr1-xTiO3 or BST multilayers 5 mol % MgO doped and undoped were prepared via metallo, delay lines, filters, and phase shifters for steerable antennas.1­3 Barium strontium titanate BaxSr1-x

Alpay, S. Pamir

107

The equilibrium crystal shape of strontium titanate and its relationship to the grain boundary plane distribution  

E-Print Network [OSTI]

The equilibrium crystal shape of strontium titanate and its relationship to the grain boundary system, strontium titanate, is compared with the grain boundary plane dis- tribution (GBPD) as a function of temperature. Strontium titanate has a pronounced surface energy anisotropy and a grain growth anomaly

Rohrer, Gregory S.

108

Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains  

E-Print Network [OSTI]

Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains M TEC of a multilayered barium strontium titanate Ba1-ySryTiO3 BST ferroelectric heterostructure such as barium strontium titanate Ba1-ySryTiO3 BST have emerged as leading candidates for such applications due

Alpay, S. Pamir

109

Discrete Barium Strontium Titanate (BST) Thin-Film Interdigital Varactors on Alumina: Design, Fabrication, Characterization, and  

E-Print Network [OSTI]

Discrete Barium Strontium Titanate (BST) Thin-Film Interdigital Varactors on Alumina: Design, Raleigh, NC-27695-7914, USA. Email:jayeshnath@ieee.org Abstract -- Discrete Barium Strontium Titanate (BST, capacitors, BST, ferroelectric, thin-film, barium strontium titanate, bandpass filter, IP3, ACPR, temperature

110

Optimization of the tunability of barium strontium titanate films via epitaxial stresses  

E-Print Network [OSTI]

Optimization of the tunability of barium strontium titanate films via epitaxial stresses Z.-G. Ban The tunability of epitaxial barium strontium titanate films is analyzed theoretically using a phenomenological.1063/1.1524310 I. INTRODUCTION Thin films of barium strontium titanate (BaxSr1 xTiO3, BST have long been recognized

Alpay, S. Pamir

111

HCN ice in Titan's high-altitude southern polar cloud  

E-Print Network [OSTI]

Titan's middle atmosphere is currently experiencing a rapid change of season after northern spring arrived in 2009. A large cloud was observed for the first time above Titan's southern pole in May 2012, at an altitude of 300 km. This altitude previously showed a temperature maximum and condensation was not expected for any of Titan's atmospheric gases. Here we show that this cloud is composed of micron-sized hydrogen cyanide (HCN) ice particles. The presence of HCN particles at this altitude, together with new temperature determinations from mid-infrared observations, indicate a very dramatic cooling of Titan's atmosphere inside the winter polar vortex in early 2012. Such a cooling is completely contrary to previously measured high-altitude warming in the polar vortex, and temperatures are a hundred degrees colder than predicted by circulation models. Besides elucidating the nature of Titan's mysterious polar cloud, these results thus show that post-equinox cooling at the winter pole is much more efficient th...

de Kok, Remco J; Maltagliati, Luca; Irwin, Patrick G J; Vinatier, Sandrine

2014-01-01T23:59:59.000Z

112

Titan's Prolific Propane: The Cassini CIRS Perspective  

E-Print Network [OSTI]

In this paper we select large spectral averages of data from the Cassini Composite Infrared Spectrometer (CIRS) obtained in limb-viewing mode at low latitudes (30S--30N), greatly increasing the path length and hence signal-to-noise ratio for optically thin trace species such as propane. By modeling and subtracting the emissions of other gas species, we demonstrate that at least six infrared bands of propane are detected by CIRS, including two not previously identified in Titan spectra. Using a new line list for the range 1300-1400cm -1, along with an existing GEISA list, we retrieve propane abundances from two bands at 748 and 1376 cm-1. At 748 cm-1 we retrieve 4.2 +/- 0.5 x 10(-7) (1-sigma error) at 2 mbar, in good agreement with previous studies, although lack of hotbands in the present spectral atlas remains a problem. We also determine 5.7 +/- 0.8 x 10(-7) at 2 mbar from the 1376 cm-1 band - a value that is probably affected by systematic errors including continuum gradients due to haze and also an imperf...

Nixon, C A; Flaud, J -M; Bezard, B; Teanby, N A; Irwin, P G J; Ansty, T M; Coustenis, A; Vinatier, S; Flasar, F M; 10.1016/j.pss.2009.06.021

2009-01-01T23:59:59.000Z

113

Nuclear criticality safety bounding analysis for the in-tank-precipitation (ITP) process, impacted by fissile isotopic weight fractions  

SciTech Connect (OSTI)

The In-Tank Precipitation process (ITP) receives High Level Waste (HLW) supernatant liquid containing radionuclides in waste processing tank 48H. Sodium tetraphenylborate, NaTPB, and monosodium titanate (MST), NaTi{sub 2}O{sub 5}H, are added for removal of radioactive Cs and Sr, respectively. In addition to removal of radio-strontium, MST will also remove plutonium and uranium. The majority of the feed solutions to ITP will come from the dissolution of supernate that had been concentrated by evaporation to a crystallized salt form, commonly referred to as saltcake. The concern for criticality safety arises from the adsorption of U and Pt onto MST. If sufficient mass and optimum conditions are achieved then criticality is credible. The concentration of u and Pt from solution into the smaller volume of precipitate represents a concern for criticality. This report supplements WSRC-TR-93-171, Nuclear Criticality Safety Bounding Analysis For The In-Tank-Precipitation (ITP) Process. Criticality safety in ITP can be analyzed by two bounding conditions: (1) the minimum safe ratio of MST to fissionable material and (2) the maximum fissionable material adsorption capacity of the MST. Calculations have provided the first bounding condition and experimental analysis has established the second. This report combines these conditions with canyon facility data to evaluate the potential for criticality in the ITP process due to the adsorption of the fissionable material from solution. In addition, this report analyzes the potential impact of increased U loading onto MST. Results of this analysis demonstrate a greater safety margin for ITP operations than the previous analysis. This report further demonstrates that the potential for criticality in the ITP process due to adsorption of fissionable material by MST is not credible.

Bess, C.E.

1994-04-22T23:59:59.000Z

114

On the Approximation Ratio of the MST-based Heuristic for the Energy-Efficient Broadcast Problem in Static Ad-Hoc Radio Networks  

E-Print Network [OSTI]

are located (see [28, 32]). Energy conservation is a critical issue in an ad-hoc wire- less networkOn the Approximation Ratio of the MST-based Heuristic for the Energy-Efficient Broadcast Problem@dia.unisa.it Abstract We present a technique to evaluate the approximation ra- tio on random instances of the Minimum

Bermond, Jean-Claude

115

Network algorithms for information analysis using the Titan Toolkit.  

SciTech Connect (OSTI)

The analysis of networked activities is dramatically more challenging than many traditional kinds of analysis. A network is defined by a set of entities (people, organizations, banks, computers, etc.) linked by various types of relationships. These entities and relationships are often uninteresting alone, and only become significant in aggregate. The analysis and visualization of these networks is one of the driving factors behind the creation of the Titan Toolkit. Given the broad set of problem domains and the wide ranging databases in use by the information analysis community, the Titan Toolkit's flexible, component based pipeline provides an excellent platform for constructing specific combinations of network algorithms and visualizations.

McLendon, William Clarence, III; Baumes, Jeffrey (Kitware Inc., Clifton Park, NY); Wilson, Andrew T.; Wylie, Brian Neil; Shead, Timothy M.

2010-07-01T23:59:59.000Z

116

Methods for producing monodispersed particles of barium titanate  

DOE Patents [OSTI]

The present invention is a low-temperature controlled method for producing high-quality, ultrafine monodispersed nanocrystalline microsphere powders of barium titanate and other pure or composite oxide materials having particles ranging from nanosized to micronsized particles. The method of the subject invention comprises a two-stage process. The first stage produces high quality monodispersed hydrous titania microsphere particles prepared by homogeneous precipitation via dielectric tuning in alcohol-water mixed solutions of inorganic salts. Titanium tetrachloride is used as an inorganic salt precursor material. The second stage converts the pure hydrous titania microsphere particles into crystalline barium titanate microsphere powders via low-temperature, hydrothermal reactions.

Hu, Zhong-Cheng (Knoxville, TN)

2001-01-01T23:59:59.000Z

117

Thermodynamic restrictions on mechanosynthesis of strontium titanate  

SciTech Connect (OSTI)

Chemical potential phase stability diagrams were calculated from relevant thermodynamic properties and used to predict the thermodynamic driving force under prospective conditions of room temperature mechanosynthesis. One analysed the dependence of chemical potential diagrams on temperature and partial pressure of evolving gases such as oxygen or carbon dioxide, as expected on using strontium peroxide or strontium carbonate as precursor reactants for the alkali earth component. Thermodynamic calculations were also obtained for changes in titania precursor reactants, including thermodynamic predictions for reactivity of strontium carbonate with amorphous titania. Experimental evidence showed that strontium titanate can be obtained by mechanosynthesis of strontium carbonate+anatase mixtures, due to previous amorphization under high energy milling. Ability to perform mechanosynthesis with less energetic milling depends on the suitable choice of alternative precursor reactants, which meet the thermodynamic requirements without previous amorphization; this was demonstrated by mechanosynthesis from anatase+strontium peroxide mixtures. - Graphical abstract: X-Ray diffractograms of the starting TiO{sub 2} (anatase)+SrCO{sub 3} mixture and after mechanical activation at 650 rpm, for 1, 2, and 7 h. Different symbols are used to identify reflections ascribed to anatase (diamonds), SrCO{sub 3} (squares) and SrTiO{sub 3} (triangles). Highlights: Black-Right-Pointing-Pointer Prediction of thermodynamic driving force for room temperature mechanosynthesis. Black-Right-Pointing-Pointer Dependence of chemical potential diagrams on temperature and partial pressure. Black-Right-Pointing-Pointer Thermodynamic calculations for changes in titania precursor. Black-Right-Pointing-Pointer Experimental support for thermodynamic predictions.

Monteiro, J.F. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Ferreira, A.A.L. [Instituto Politecnico de Viana do Castelo, 4900-347 Viana do Castelo (Portugal); Antunes, I. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal); Fagg, D.P., E-mail: duncan@ua.pt [Centro de Tecnologia Mecanica e Automacao, Departamento de Engenharia Mecanica, Universidade de Aveiro, 3810-193 Aveiro (Portugal); Frade, J.R. [Department of Ceramics and Glass Engineering, CICECO, University of Aveiro, 3810-193 Aveiro (Portugal)

2012-01-15T23:59:59.000Z

118

Planetary and Space Science 54 (2006) 11771187 Titan's methane cycle  

E-Print Network [OSTI]

Abstract Methane is key to sustaining Titan's thick nitrogen atmosphere. However, methane is destroyed and the pressure induced opacity in the infrared, particularly by CH4­N2 and H2­N2 collisions in the troposphere), whose reaction with carbon grains or carbon dioxide in the crustal pores produces methane gas

Atreya, Sushil

119

Visually Navigating the RMS Titanic with SLAM Information Filters  

E-Print Network [OSTI]

demonstrate automatic visually-augmented navigation processing of a sequence of 866 images of the RMS Titanic. These include hydrothermal vent sites, cold seep sites, shipwrecks of archaeological significance, coral reefs as a representation of the data that serves as input to our algorithm. It is the result of semi-automatic processing

Eustice, Ryan

120

Tuesday, March 13, 2007 POSTER SESSION I: TITAN  

E-Print Network [OSTI]

. Griffith C. Hirtzig M. Barnes J. W. Buratti B. J. Brown R. H. Nicholson P. D. Baines K. H. VIMS Team models. Campbell D. B. Black G. J. Carter L. M. Nolan M. C. Titan: 13 cm Arecibo Radar Observations. M. Brown R. H. Barnes J. W. Baines K. Clark R. Jaumann R. Nicholson P. Sotin C. Exploring Methods

Rathbun, Julie A.

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Ion transport in Titan's upper atmosphere M. Galand,1  

E-Print Network [OSTI]

] The Voyager 1 radio occultation experiment revealed the presence of a substantial ionosphere on Titan [Bird et et al., 2008]. PreCassini investigations con- sidered both photoionization by solar radiation considerations alone. [3] Cassini data has shown quite definitively that solar radiation is the dominant

Yelle, Roger V.

122

Titan Imagery with Keck AO during and after Probe Entry  

SciTech Connect (OSTI)

We present adaptive optics data from the 10-m W.M. Keck telescope that were taken during the time the Huygens probe descended through Titan's atmosphere, and on the days following touch-down. The spatial resolution of the images is typically {approx}0.04-inch, or {approx}240 km on Titan (60 km/pixel). No probe entry signal was detected at levels exceeding 0.8 {micro}Jy (3-{sigma}) per pixel (0.01-inch), which although within the range of predicted flux levels, cannot constrain any models. We present data on Titan's surface, troposphere and stratosphere during the days following probe entry, when the solar phase angle varied from 0.05{sup o} up to 0.8{sup o}, with the Sun in the West. Contrary to expectation, the data often showed the East side to be brightest. Adding data obtained with Keck and Gemini over the past few years reveals that the East-West asymmetry can be explained by a combination of the solar phase angle effect together with a general preponderance of haze on Titan's East or morning hemisphere. The troposphere was characterized by quiescent weather; only a few small clouds were present near the south pole, at typical altitudes of 30-40 km. While stratospheric haze was prominent over the northern hemisphere, tropospheric haze dominated the south, from the S. pole up to latitudes of {approx} -45{sup o}. An intriguing observation is that obtained at 1.22 {micro}m, which revealed haze in the form of a collar at -60{sup o}, in contrast to the polar haze cap as usually seen. A comparison of narrow band JHK images of Titan's surface with that obtained by Cassini ISS shows a striking resemblance in small-scale features. After a decent attempt to remove the atmosphere from the images, the surface contrast between dark and bright areas may be larger at 2 {micro}m than at 1.6 and 1.3 {micro}m. If true, this could imply that the dark areas on Titan's surface are covered by a coarser grained frost than the bright areas, and/or that there are more absorbers, such as NH{sub 3}/NH{sub 4}SH frost, in these dark areas.

de Pater, I; Adamkovics, M; Bouchez, A H; Brown, M E; Gibbard, S G; Marchis, F; Roe, H G; Schaller, E L; Young, E

2006-02-03T23:59:59.000Z

123

How to Turn a Jaguar into a Titan | Department of Energy  

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

Three years later though, the petascale is long in the rearview mirror as high-performance computing advances to the next big milestone, the exascale. Looking under Titan's...

124

Safety evaluation of RTG launches aboard Titan IV launch vehicles  

SciTech Connect (OSTI)

The analytical tool used to evaluate accidents aboard a Titan IV launch vehicle involving a Radioisotope Thermoelectric Generator (RTG) is discussed. The Launch Accident Scenario Evaluation Program-Titan IV version (LASEP-T) uses a Monte Carlo approach to determine the response of an RTG to various threatening environments. The threatening environments arise from a complex interplay of probabilistic and deterministic processes, and are therefore parameterized by a set of random variables with probability distributions. The assessment of the RTG response to a given environment is based on both empirical data and theoretical modeling. Imbedding detailed, complex response models into the LASEP-T calculation was not practical. Simpler response models have been constructed to capture both the inherent variability due to the phenomenology of the accident scenario along with the uncertainty of predicting response behavior. The treatment of variability and uncertainty as it pertains to the launch accident evaluation of RTG response will be discussed.

Rosko, Robert J.; Loughin, Stephen [Lockheed Martin Missiles and Space P.O. Box 8555 Philadelphia, Pennsylvania 19101 (United States)

1997-01-10T23:59:59.000Z

125

Method for removing metal ions from solution with titanate sorbents  

DOE Patents [OSTI]

A method for removing metal ions from solution comprises the steps of providing titanate particles by spray-drying a solution or slurry comprising sorbent titanates having a particle size up to 20 micrometers, optionally in the presence of polymer free of cellulose functionality as binder, said sorbent being active towards heavy metals from Periodic Table (CAS version) Groups IA, IIA, IB, IIB, IIIB, and VIII, to provide monodisperse, substantially spherical particles in a yield of at least 70 percent of theoretical yield and having a particle size distribution in the range of 1 to 500 micrometers. The particles can be used free flowing in columns or beds, or entrapped in a nonwoven, fibrous web or matrix or a cast porous membrane, to selectively remove metal ions from aqueous or organic liquid.

Lundquist, Susan H. (White Bear Township, MN); White, Lloyd R. (Minneapolis, MN)

1999-01-01T23:59:59.000Z

126

SEASONAL DISAPPEARANCE OF FAR-INFRARED HAZE IN TITAN'S STRATOSPHERE  

SciTech Connect (OSTI)

A far-infrared emission band attributed to volatile or refractory haze in Titan's stratosphere has been decreasing in intensity since Cassini's arrival in 2004. The 220 cm{sup -1} feature, first seen by the Voyager Infrared Interferometer Spectrometer, has only been found in Titan's winter polar region. The emission peaks at about 140 km altitude near the winter stratospheric temperature minimum. Observations recorded over the period 2004-2012 by the Composite Infrared Spectrometer on Cassini show a decrease in the intensity of this feature by about a factor of four. Possible seasonal causes of this decline are an increase in photolytic destruction of source chemicals at high altitude, a lessening of condensation as solar heating increased, or a weakening of downwelling of vapors. As of early 2012, the 220 cm{sup -1} haze has not yet been detected in the south. The haze composition is unknown, but its decrease is similar to that of HC{sub 3}N gas in Titan's polar stratosphere, pointing to a nitrile origin.

Jennings, Donald E.; Anderson, C. M.; Flasar, F. M.; Cottini, V. [Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Samuelson, R. E.; Nixon, C. A.; Kunde, V. G.; Achterberg, R. K. [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); De Kok, R. [SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht (Netherlands); Coustenis, A.; Vinatier, S. [LESIA, Observatoire de Paris-Meudon, 92195 Meudon Cedex (France); Calcutt, S. B., E-mail: donald.e.jennings@nasa.gov [Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom)

2012-07-20T23:59:59.000Z

127

Midterm Summary of Japan-US Fusion Cooperation Program TITAN  

SciTech Connect (OSTI)

Japan-US cooperation program TITAN (Tritium, Irradiation and Thermofluid for America and Nippon) started in April 2007 as 6-year project. This is the summary report at the midterm of the project. Historical overview of the Japan-US cooperation programs and direction of the TITAN project in its second half are presented in addition to the technical highlights. Blankets are component systems whose principal functions are extraction of heat and tritium. Thus it is crucial to clarify the potentiality for controlling heat and tritium flow throughout the first wall, blanket and out-of-vessel recovery systems. The TITAN project continues the JUPITER-II activity but extends its scope including the first wall and the recovery systems with the title of 'Tritium and thermofluid control for magnetic and inertial confinement systems'. The objective of the program is to clarify the mechanisms of tritium and heat transfer throughout the first-wall, the blanket and the heat/tritium recovery systems under specific conditions to fusion such as irradiation, high heat flux, circulation and high magnetic fields. Based on integrated models, the breeding, transfer, inventory of tritium and heat extraction properties will be evaluated for some representative liquid breeder blankets and the necessary database will be obtained for focused research in the future.

Muroga, Takeo [National Institute for Fusion Science, Toki, Japan; Sze, Dai-Kai [University of California, San Diego; Sokolov, Mikhail [ORNL; Katoh, Yutai [ORNL; Stoller, Roger E [ORNL

2011-01-01T23:59:59.000Z

128

Planning for post-Cassini/HuygensPlanning for post-Cassini/Huygens Exploration of Titan:Exploration of Titan  

E-Print Network [OSTI]

, with an admixture (2-10%) of methane · Temperatures are very low (95 K surface, 70 K @ 50 km), so that methane the Sun; makes C2 and higher hydrocarbons Pressure, bars #12;July 1, 2004 "T0" A spectrum of Titan distribution of the compounds in regularly spaced clusters 1 2 1 C11H18N3 192.1501 u 2 C9H14N5 192.1249 u

Beauchamp, Jack

129

Persistent Photoconductivity in Strontium Titanate Marianne C. Tarun, Farida A. Selim, and Matthew D. McCluskey*  

E-Print Network [OSTI]

Persistent Photoconductivity in Strontium Titanate Marianne C. Tarun, Farida A. Selim, and Matthew was observed in strontium titanate (SrTiO3) single crystals. When exposed to sub-bandgap light (2.9 e, and colossal magnetoresistance [1]. Strontium titanate (SrTiO3), in particular, is the subject of intense

McCluskey, Matthew

130

The measurement and interpretation of electrostatic potential profiles across grain boundaries in strontium titanate  

E-Print Network [OSTI]

in strontium titanate S J P Longworth 1,2 , K M Knowles 1,3 and R E Dunin-Borkowski 1 1 Department of Materials-doped polycrystalline strontium titanate samples are summarised. An assessment is made of whether the measured

Dunin-Borkowski, Rafal E.

131

Optimization of High Tunability Barium Strontium Titanate Thin Films Grown by RF Magnetron  

E-Print Network [OSTI]

Optimization of High Tunability Barium Strontium Titanate Thin Films Grown by RF Magnetron Abstract-- Barium strontium titanate is a solid solution perovskite with a field-dependent permittivity.7 MV/cm. I. INTRODUCTION In recent years there has been much interest in thin-film barium strontium

York, Robert A.

132

Titan Student Union "Visioning Day" Activity (March 18, 2011) Student Engagement Report  

E-Print Network [OSTI]

Titan Student Union ­ "Visioning Day" Activity (March 18, 2011) Student Engagement Report FY 2010-2011 Purpose Statement The Titan Student Union and Student Recreation Center, collectively a unit of the Associated Students, CSUF, Inc., together serve as the primary gathering place and recreational facility

de Lijser, Peter

133

Near-infrared spectral mapping of Titan's mountains and channels Jason W. Barnes,1,2  

E-Print Network [OSTI]

Near-infrared spectral mapping of Titan's mountains and channels Jason W. Barnes,1,2 Jani Radebaugh bright spectral units based on our findings. Citation: Barnes, J. W., et al. (2007), Near-infrared ranges on Titan using data from Cassini's Visual and Infrared Mapping Spectrometer (VIMS) obtained during

Perfect, Ed

134

The impact of methane thermodynamics on seasonal convection and circulation in a model Titan atmosphere  

E-Print Network [OSTI]

The impact of methane thermodynamics on seasonal convection and circulation in a model Titan mechanisms controlling the distribution of methane convection and large-scale circulation in a simplified, axisymmetric model atmosphere of Titan forced by gray radiation and moist (methane) con- vection. The large

Caballero, Rodrigo

135

Plasma environment in the wake of Titan from hybrid simulation: A case study  

E-Print Network [OSTI]

Plasma environment in the wake of Titan from hybrid simulation: A case study R. Modolo,1 G. M] On 26 December 2005, the Cassini spacecraft flew through Titan's plasma wake and revealed a complex position of the wake. Two distinct plasma regions are identified with a significant difference

Gurnett, Donald A.

136

Dielectric behavior of barium modified strontium bismuth titanate ceramic  

SciTech Connect (OSTI)

Barium Modified Strontium Bismuth Titanate(SBT) ceramic with general formula Sr1?xBaxBi4Ti4O15 is prepared by solid state reaction route. The structural analysis of the ceramics was done by X-ray diffraction technique. The X-ray patterns show that all the compositions are of single phase with orthorhombic structure. The temperature dependent dielectric behavior shows that the transition temperature decreases with Ba content but the maximum dielectric constant increases. The decreases of the transition with increase in Ba{sup 2+} ion, may be due to the decrease of orthorhombicity by the incorporation of Ba{sup 2+} ion in SBT lattice.

Nayak, P., E-mail: priyambada.pce@gmail.com [Department of Physics, National Institute of Technology, Rourkela, Odisha-769008 (India); Badapanda, T. [Department of Physics, C.V. Raman College of Engineering, Bhubaneswar, Odisha-752054 (India); Anwar, S.; Panigrahi, S. [Colloids and Materials Chemistry, Institute of Minerals and Materials Technology, Bhubaneswar, Odisha-751013 (India)

2014-04-24T23:59:59.000Z

137

Sensitivity Increases for the TITAN Decay Spectroscopy Program  

E-Print Network [OSTI]

The TITAN facility at TRIUMF has recently initiated a program of performing decay spectroscopy measurements in an electron-beam ion-trap (EBIT). The unique environment of the EBIT provides backing-free storage of the radioactive ions, while guiding charged decay particles from the trap centre via the strong magnetic field. This measurement technique is able to provide a significant increase in detection sensitivity for photons which result from radioactive decay. A brief overview of this device is presented, along with methods of improving the signal-to-background ratio for photon detection by reducing Compton scattered events, and eliminating vibrational noise.

K. G. Leach; A. Lennarz; A. Grossheim; C. Andreoiu; J. Dilling; D. Frekers; M. Good; S. Seeraji

2014-10-30T23:59:59.000Z

138

Strain engineered barium strontium titanate for tunable thin film resonators  

SciTech Connect (OSTI)

Piezoelectric properties of epitaxial (001) barium strontium titanate (BST) films are computed as functions of composition, misfit strain, and temperature using a non-linear thermodynamic model. Results show that through adjusting in-plane strains, a highly adaptive rhombohedral ferroelectric phase can be stabilized at room temperature with outstanding piezoelectric response exceeding those of lead based piezoceramics. Furthermore, by adjusting the composition and the in-plane misfit, an electrically tunable piezoelectric response can be obtained in the paraelectric state. These findings indicate that strain engineered BST films can be utilized in the development of electrically tunable and switchable surface and bulk acoustic wave resonators.

Khassaf, H.; Khakpash, N. [Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269 (United States); Sun, F. [Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (United States); Sbrockey, N. M.; Tompa, G. S. [Structured Materials Industries, Inc., Piscataway, New Jersey 08854 (United States); Kalkur, T. S. [Department of Electrical and Computer Engineering, University of Colorado at Colorado Springs, Colorado Springs, Colorado 80918 (United States); Alpay, S. P., E-mail: p.alpay@ims.uconn.edu [Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269 (United States); Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (United States)

2014-05-19T23:59:59.000Z

139

Titan Energy Systems Enfinity JV | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty LtdSteen,Ltd Jump JumpAl., 1978)TillmanMunicipal Electric Util JumpTitan Energy

140

Untangling the Chemical Evolution of Titan's Atmosphere and Surface -- From Homogeneous to Heterogeneous Chemistry  

SciTech Connect (OSTI)

The arrival of the Cassini-Huygens probe at Saturn's moon Titan - the only Solar System body besides Earth and Venus with a solid surface and a thick atmosphere with a pressure of 1.4 atm at surface level - in 2004 opened up a new chapter in the history of Solar System exploration. The mission revealed Titan as a world with striking Earth-like landscapes involving hydrocarbon lakes and seas as well as sand dunes and lava-like features interspersed with craters and icy mountains of hitherto unknown chemical composition. The discovery of a dynamic atmosphere and active weather system illustrates further the similarities between Titan and Earth. The aerosol-based haze layers, which give Titan its orange-brownish color, are not only Titan's most prominent optically visible features, but also play a crucial role in determining Titan's thermal structure and chemistry. These smog-like haze layers are thought to be very similar to those that were present in Earth's atmosphere before life developed more than 3.8 billion years ago, absorbing the destructive ultraviolet radiation from the Sun, thus acting as 'prebiotic ozone' to preserve astrobiologically important molecules on Titan. Compared to Earth, Titan's low surface temperature of 94 K and the absence of liquid water preclude the evolution of biological chemistry as we know it. Exactly because of these low temperatures, Titan provides us with a unique prebiotic 'atmospheric laboratory' yielding vital clues - at the frozen stage - on the likely chemical composition of the atmosphere of the primitive Earth. However, the underlying chemical processes, which initiate the haze formation from simple molecules, have been not understood well to date.

Kaiser, Ralf I.; Maksyutenko, Pavlo; Ennis, Courtney; Zhang, Fangtong; Gu, Xibin; Krishtal, Sergey P.; Mebel, Alexander M.; Kostko, Oleg; Ahmed, Musahid

2010-03-16T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

PROCESSING ALTERNATIVES FOR DESTRUCTION OF TETRAPHENYLBORATE  

SciTech Connect (OSTI)

Two processes were chosen in the 1980's at the Savannah River Site (SRS) to decontaminate the soluble High Level Waste (HLW). The In Tank Precipitation (ITP) process (1,2) was developed at SRS for the removal of radioactive cesium and actinides from the soluble HLW. Sodium tetraphenylborate was added to the waste to precipitate cesium and monosodium titanate (MST) was added to adsorb actinides, primarily uranium and plutonium. Two products of this process were a low activity waste stream and a concentrated organic stream containing cesium tetraphenylborate and actinides adsorbed on monosodium titanate (MST). A copper catalyzed acid hydrolysis process was built to process (3, 4) the Tank 48H cesium tetraphenylborate waste in the SRS's Defense Waste Processing Facility (DWPF). Operation of the DWPF would have resulted in the production of benzene for incineration in SRS's Consolidated Incineration Facility. This process was abandoned together with the ITP process in 1998 due to high benzene in ITP caused by decomposition of excess sodium tetraphenylborate. Processing in ITP resulted in the production of approximately 1.0 million liters of HLW. SRS has chosen a solvent extraction process combined with adsorption of the actinides to decontaminate the soluble HLW stream (5). However, the waste in Tank 48H is incompatible with existing waste processing facilities. As a result, a processing facility is needed to disposition the HLW in Tank 48H. This paper will describe the process for searching for processing options by SRS task teams for the disposition of the waste in Tank 48H. In addition, attempts to develop a caustic hydrolysis process for in tank destruction of tetraphenylborate will be presented. Lastly, the development of both a caustic and acidic copper catalyzed peroxide oxidation process will be discussed.

Lambert, D; Thomas Peters, T; Samuel Fink, S

2007-02-27T23:59:59.000Z

142

Evidence of Titan's Climate History from Evaporite Distribution  

E-Print Network [OSTI]

Water-ice-poor, 5-$\\mu$m-bright material on Saturn's moon Titan has previously been geomorphologically identified as evaporitic. Here we present a global distribution of the occurrences of the 5-$\\mu$m-bright spectral unit, identified with Cassini's Visual Infrared Mapping Spectrometer (VIMS) and examined with RADAR when possible. We explore the possibility that each of these occurrences are evaporite deposits. The 5-$\\mu$m-bright material covers 1\\% of Titan's surface and is not limited to the poles (the only regions with extensive, long-lived surface liquid). We find the greatest areal concentration to be in the equatorial basins Tui Regio and Hotei Regio. Our interpretations, based on the correlation between 5-$\\mu$m-bright material and lakebeds, imply that there was enough liquid present at some time to create the observed 5-$\\mu$m-bright material. We address the climate implications surrounding a lack of evaporitic material at the south polar basins: if the south pole basins were filled at some point in ...

MacKenzie, Shannon M; Sotin, Christophe; Soderblom, Jason M; Moulic, Stphane Le; Rodriguez, Sebastien; Baines, Kevin H; Buratti, Bonnie J; Clark, Roger N; Nicholson, Phillip D; McCord, Thomas B

2014-01-01T23:59:59.000Z

143

Damage evolution in Au-implanted Ho2Ti2O7 titanate pyrochlore...  

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

Zhang Y, J Jagielski, IT Bae, X Xiang, L Thome, G Balakrishnan, DM Paul, and WJ Weber.2010."Damage evolution in Au-implanted Ho2Ti2O7 titanate pyrochlore."Nuclear...

144

E-Print Network 3.0 - attrition-resistant zinc titanate Sample...  

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

of this alkylation reaction can also be catalyzed by chiral titanate complexes2-4 (e.g., TAD- DOLs2 and chiral Source: Zhang, Xumu - Department of Chemistry, Pennsylvania State...

145

Constraining the average fill densities of Mars' lowlands and fluvial erosion of Titan's polar regions.  

E-Print Network [OSTI]

Other than Earth, Mars and Titan are the only bodies in our Solar System where we have observed widespread fluvial activity. In this thesis I present two approaches for constraining the extent of multiple resurfacing ...

Tewelde, Yodit

2013-01-01T23:59:59.000Z

146

A TRANSMISSION SPECTRUM OF TITAN'S NORTH POLAR ATMOSPHERE FROM A SPECULAR REFLECTION OF THE SUN  

E-Print Network [OSTI]

Cassini/VIMS T85 observations of a solar specular reflection off of Kivu Lacus (87[ over .]4N 241[ over .]1E) provide an empirical transmission spectrum of Titan's atmosphere. Because this observation was acquired from ...

Barnes, Jason W.

147

Evaluation of a heated-air airship for the environment of Titan  

E-Print Network [OSTI]

Future exploration of Saturn's moon Titan can be carried out by airships, which have the capability to study the atmosphere as well as the capability to land and study the surface at multiple locations. Several lighter-than-air ...

Heller, Richard, S.M. Massachusetts Institute of Technology

2011-01-01T23:59:59.000Z

148

Dielectric and electromechanical properties of barium and zirconium co-doped sodium bismuth titanate  

E-Print Network [OSTI]

Compositional exploration was conducted within the alkaline bismuth titanate system by doping on the A- and B- sites with Ba? and Zr??, respectively. Results on the phase, dielectric and electromechanical properties of ...

Sheets, Sossity A. (Sossity Amber), 1973-

2000-01-01T23:59:59.000Z

149

XANES study of Fe-implanted strontium titanate  

SciTech Connect (OSTI)

Properties of strontium titanate SrTiO{sub 3} (STO) depend to a great extent on the substitutional dopants and defects of crystal structure. The ion beam implantation method was used for doping STO (001) crystals with Fe at different doses. Implanted samples were then annealed at 350C in oxygen to induce recrystallization and remove oxygen vacancies produced during ion implantation process. The effect of Fe doping and post-implantation annealing was studied by X-ray Absorption Near Edge Spectroscopy (XANES) method and Superconducting Quantum Interference Device (SQUID). XANES allowed to monitor the change in structure of STO crystals and in the local environment of Fe following the implantation and annealing steps. SQUID measurements revealed correlation between magnetic moment and Fe implantation dose. Ferromagnetic hysteresis was observed on selected Fe-implanted STO at 5 K. The observed magnetic properties can be correlated with the several Fe oxide phases in addition to the presence of O/Ti vacancies.

Lobacheva, O.; Goncharova, L. V.; Chavarha, M.; Sham, T. K. [Department of Physics and Astronomy, and Department of Chemistry, University of Western Ontario, London, ON N6A 5B7 (Canada)

2014-03-31T23:59:59.000Z

150

On the chemical composition of Titan's dry lakebed evaporites  

E-Print Network [OSTI]

Titan, the main satellite of Saturn, has an active cycle of methane in its troposphere. Among other evidence for a mechanism of evaporation at work on the ground, dry lakebeds have been discovered. Recent Cassini infrared observations of these empty lakes have revealed a surface composition poor in water ice compared to that of the surrounding terrains --- suggesting the existence of organic evaporites deposits. The chemical composition of these possible evaporites is unknown. In this paper, we study evaporite composition using a model that treats both organic solids dissolution and solvent evaporation. Our results suggest the possibility of large abundances of butane and acetylene in the lake evaporites. However, due to uncertainties of the employed theory, these determinations have to be confirmed by laboratory experiments.

Cordier, Daniel; Ferreira, Abel

2013-01-01T23:59:59.000Z

151

IN SITU MEASUREMENTS OF THE SIZE AND DENSITY OF TITAN AEROSOL ANALOGS  

SciTech Connect (OSTI)

The organic haze produced from complex CH{sub 4}/N{sub 2} chemistry in the atmosphere of Titan plays an important role in processes that occur in the atmosphere and on its surface. The haze particles act as condensation nuclei and are therefore involved in Titan's methane hydrological cycle. They also may behave like sediment on Titan's surface and participate in both fluvial and aeolian processes. Models that seek to understand these processes require information about the physical properties of the particles including their size and density. Although measurements obtained by Cassini-Huygens have placed constraints on the size of the haze particles, their densities remain unknown. We have conducted a series of Titan atmosphere simulation experiments and measured the size, number density, and particle density of Titan aerosol analogs, or tholins, for CH{sub 4} concentrations from 0.01% to 10% using two different energy sources, spark discharge and UV. We find that the densities currently in use by many Titan models are higher than the measured densities of our tholins.

Hoerst, S. M.; Tolbert, M. A, E-mail: sarah.horst@colorado.edu [Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO (United States)

2013-06-10T23:59:59.000Z

152

High-frequency fluctuation measurements by far-infrared laser Faraday-effect polarimetry-interferometry and forward scattering system on MST  

SciTech Connect (OSTI)

Magnetic fluctuation-induced transport driven by global tearing modes has been measured by Faraday-effect polarimetry and interferometry (phase measurements) in the MST reversed field pinch. However, the role of small-scale broadband magnetic and density turbulence in transport remains unknown. In order to investigate broadband magnetic turbulence, we plan to upgrade the existing detector system by using planar-diode fundamental waveguide mixers optimized for high sensitivity. Initial tests indicate these mixers have 10 sensitivity improvement compared to currently employed corner-cube Schottky-diode mixers and 5 lower noise. Compact mixer design will allow us to resolve the wavenumbers up to k ? 12 cm{sup ?1} for beam width w = 1.5 cm and 15 cm{sup ?1} for beam width w = 2 mm. The system can also be used to measure the scattered signal (amplitude measurement) induced by both plasma density and magnetic fluctuations.

Ding, W. X., E-mail: wding@ucla.edu; Lin, L.; Brower, D. L. [Department of Physics and Astronomy, University of California Los Angeles, Los Angeles, CA 90095 (United States); Duff, J. R. [Department of Physics, University of Wisconsin-Madison, Wisconsin 53706 (United States)

2014-11-15T23:59:59.000Z

153

JOURNAL DE PHYSIQUE Colloque C2, suppl&ment au no 4, Tome 33, Avril 1972, page C2-135 THE LATTICE DYNAMICS OF STRONTIUM TITANATE  

E-Print Network [OSTI]

DYNAMICS OF STRONTIUM TITANATE W. G. STIRLING and R. A. COWLEY Department of Physics, Edinburgh University vibration dans le titanate de Strontium, les frkquences de plusieurs modes normaux se propageant dans les and eigenvectors of the normal modes of vibration in Strontium Titanate, the fre- quencies of several normal modes

Boyer, Edmond

154

On the State of Water Ice on Saturn's Moon Titan and Implications to Icy Bodies in the Outer Solar System  

E-Print Network [OSTI]

, `primordial' water ice on Titan might be crystalline unless amorphous ice can be produced by interactionOn the State of Water Ice on Saturn's Moon Titan and Implications to Icy Bodies in the Outer Solar ReceiVed: April 25, 2009; ReVised Manuscript ReceiVed: July 9, 2009 The crystalline state of water ice

Jewitt, David C.

155

The TITAN in-trap decay spectroscopy facility at TRIUMF  

E-Print Network [OSTI]

This article presents an upgraded in-trap decay spectroscopy apparatus which has been developed and constructed for use with TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN). This device consists of an open-access electron-beam ion-trap (EBIT), which is surrounded radially by seven low-energy planar Si(Li) detectors. The environment of the EBIT allows for the detection of low-energy photons by providing backing-free storage of the radioactive ions, while guiding charged decay particles away from the trap centre via the strong (up to 6 T) magnetic field. In addition to excellent ion confinement and storage, the EBIT also provides a venue for performing decay spectroscopy on highly-charged radioactive ions. Recent technical advancements have been able to provide a significant increase in sensitivity for low-energy photon detection, towards the goal of measuring weak electron-capture branching ratios of the intermediate nuclei in the two-neutrino double beta ($2\

K. G. Leach; A. Grossheim; A. Lennarz; T. Brunner; J. R. Crespo Lpez-Urrutia; A. T. Gallant; M. Good; R. Klawitter; A. A. Kwiatkowski; T. Ma; T. D. Macdonald; S. Seeraji; M. C. Simon; C. Andreoiu; J. Dilling; D. Frekers

2014-11-22T23:59:59.000Z

156

In Situ Type Study of Hydrothermally Prepared Titanates and Silicotitanates  

SciTech Connect (OSTI)

One of the most vexing problems facing the nuclear industry and countries with nuclear weapons is the safe disposal of the generated nuclear waste. Huge quantities of nuclear waste arising from weapons manufacture are stored at the Hanford and Savannah River sites in the USA. The general method of remediation involves the removal of Cs-137, Sr-90 and actinides from a huge quantity of salts, principally NaNO{sub 3}, organics and complexing agents. It has been found that a sodium silicotitanate is able to remove Cs{sup +} selectively from the waste and certain sodium titanates remove Sr{sup 2+} and actinides. These compounds have been prepared by ex-situ hydrothermal methods. We have studied the In situ growth of these materials at the National Synchrotron Light Source, Brookhaven National Laboratory. In addition we will describe the mechanism of ion exchange in the titanosilicate as observed by In situ methods and how the combination of these techniques coupled with an intimate knowledge of the structure of the solids is helping to solve the remediation process. In general, the In situ method allows the investigator to follow the nucleation and crystal growth or phase transformations occurring in hydrothermal reactions.

Clearfield,A.; Tripathi, A.; Medvedev, D.; Celestian, A.; Parise, J.

2006-01-01T23:59:59.000Z

157

DETERMINATION OF THE IMPACT OF GLYCOLATE ON ARP AND MCU OPERATIONS  

SciTech Connect (OSTI)

Savannah River Remediation (SRR) is evaluating an alternate flowsheet for the Defense Waste Processing Facility (DWPF) using glycolic acid as a reductant. An important aspect of the development of the glycolic acid flowsheet is determining if glycolate has any detrimental downstream impacts. Testing was performed to determine if there is any impact to the strontium and actinide sorption by monosodium titanate (MST) and modified monosodium titanate (mMST) or if there is an impact to the cesium removal at the Modular Caustic-Side Solvent Extraction Processing Unit (MCU). Sorption testing was performed using both MST and modified MST (mMST) in the presence of 5,000 and 10,000 ppm (mass basis) glycolate. 10,000 ppm is the estimated bounding concentration expected in the DWPF recycle stream based on DWPF melter flammable gas model results. The presence of glycolate was found to slow the removal of Sr and Pu by MST, while increasing the removal rate of Np. Results indicate that the impact is a kinetic effect, and the overall capacity of the material is not affected. There was no measurable effect on U removal at either glycolate concentration. The slower removal rates for Sr and Pu at 5,000 and 10,000 ppm glycolate could result in lower DF values for these sorbates in ARP based on the current (12 hours) and proposed (8 hours) contact times. For the highest glycolate concentration used in this study, the percentage of Sr removed at 6 hours of contact decreased by 1% and the percentage of Pu removed decreased by nearly 7%. The impact may prove insignificant if the concentration of glycolate that is returned to the tank farm is well below the concentrations tested in this study. The presence of glycolate also decreased the removal rates for all three sorbates (Sr, Pu, and Np) by mMST. Similarly to MST, the results for mMST indicate that the impact is a kinetic effect, and the overall capacity of the material is not affected. The presence of glycolate did not change the lack of affinity of mMST for U. Pre-contacting the MST or mMST with glycolate did not have a significant effect on the performance of the materials when compared to tests having the same concentration of glycolate present in the simulant. These findings suggest that the glycolate is likely influencing removal by sorbate complexation and not by depositing onto or forming a film on the surface of the MST solids. Since the DF values are salt batch dependent, it is not possible to a priori quantify the impacts of glycolate on future processing campaigns. However, we recommend that the impacts of glycolate be evaluated during each salt batch qualification when a final processing concentration is defined, and recommendations can then be made on how to mitigate negative impacts, if needed. Impacts to the performance of the MST or mMST could be mitigated by increasing contact time or increasing sorbent concentrations. In addition to the MST and mMST testing, testing was performed to determine if there is an impact to the cesium removal at Modular Caustic-Side Solvent Extraction Processing Unit (MCU). An Extraction-Scrub-Strip (ESS) test routine was used to simulate cesium removal at the MCU. For this, SRNL performed three ESS tests, using the same basic aqueous waste simulant and solvent. For one test, SRNL added 5,000 ppm (mass basis) of glycolate and added 10,000 ppm of glycolate to a second test. A control test contained no glycolate. The results of all three tests were virtually identical for all the extraction, scrub and strip tests. (A single data point in the 5,000 ppm test is physically impossible and SRNL is currently resolving this obvious error.) At this time, SRNL concludes that the presence of up to 10,000 ppm of glycolate does not affect cesium removal by the current solvent system used in the MCU. Although not tested, the impact of glycolate for the Next Generation Solvent - that replaces BOBCalixC6 with MaxCalix - is expected to be very similar to that for the baseline solvent. Testing is needed to confirm. Additional testing is recommended to both further

Taylor-Pashow, K.; Peters, T.; Shehee, T.

2012-06-04T23:59:59.000Z

158

Clathrate hydrates as a sink of noble gases in Titan's atmosphere  

E-Print Network [OSTI]

We use a statistical thermodynamic approach to determine the composition of clathrate hydrates which may form from a multiple compound gas whose composition is similar to that of Titan's atmosphere. Assuming that noble gases are initially present in this gas phase, we calculate the ratios of xenon, krypton and argon to species trapped in clathrate hydrates. We find that these ratios calculated for xenon and krypton are several orders of magnitude higher than in the coexisting gas at temperature and pressure conditions close to those of Titan's present atmosphere at ground level. Furthermore we show that, by contrast, argon is poorly trapped in these ices. This trapping mechanism implies that the gas-phase is progressively depleted in xenon and krypton when the coexisting clathrate hydrates form whereas the initial abundance of argon remains almost constant. Our results are thus compatible with the deficiency of Titan's atmosphere in xenon and krypton measured by the {\\it Huygens} probe during its descent on J...

Thomas, C; Ballenegger, V; Picaud, Sylvain

2007-01-01T23:59:59.000Z

159

Polymerization of acetaldehyde using tetraiso-Propyl titanate as a catalyst  

E-Print Network [OSTI]

with palladous chloride as a catalyst forms vinylacetate and water. ~ CH =CHO CDCH i (CH -CHQ CDCH l 2 3 n Vinylacetate monomers are polymerized by radical initiation to form polyvinyl acetate. (CH2-CHO ~ COCH3) n H or OH (CH -CH)n n OH polyvinyl... of tetravinyl titanate by procedure (B) (21) Hydrolysis reaction of vinyl titanate RESULTS AND DISCUSSION The materials obtained from the polymerization reaction at high temperature The materials obtained from the polymerization of acetaldehyde at 200'C...

Makita, Muneharu

2012-06-07T23:59:59.000Z

160

EVALUATION OF ALTERNATIVE FILTER MEDIA FOR THE ROTARY MICROFILTER, PHASE 2  

SciTech Connect (OSTI)

Testing was conducted at the Savannah River National Laboratory (SRNL) to investigate filter membrane performance in an effort to increase rotary microfilter (RMF) throughput. Membranes were tested in the SpinTek Filtration, Inc. Static Test Cell (STC), which permitted quick and easy testing of several different membranes. Testing consisted of 100 hours tests with two different slurry feeds, based on recommendations from the phase 1 testing. One feed contained Monosodium Titanate (MST) solids in a simulated salt solution. The other feed contained simulated sludge batch 6 (SB6) solids in a simulated salt solution. Five membranes were tested, one each from filter manufactures Pall and Porvair and three from the Oak Ridge National Laboratory (ORNL). The membrane from Pall is the current membrane used on the latest generation RMF. The Porvair membrane performed well in previous STC tests as well as one of the ORNL membranes. The other two membranes from ORNL were recently developed and not available for the previous STC test. The results indicate that the Porvair filter performed best with the MST slurry and the ORNL SVB6-1B filter performed best with the SB6 slurry. Difficulty was encountered with the ORNL filters due to their dimensional thickness, which was greater than the recommended filter thickness for the STC. The STC equipment was modified to complete the testing of the ORNL filters.

Fowley, M.

2012-07-31T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

IMPACT OF URANIUM AND THORIUM ON HIGH TIO2 CONCENTRATION NUCLEAR WASTE GLASSES  

SciTech Connect (OSTI)

This study focused on the potential impacts of the addition of Crystalline Silicotitanate (CST) and Monosodium Titanate (MST) from the Small Column Ion Exchange (SCIX) process on the Defense Waste Processing Facility (DWPF) glass waste form and the applicability of the DWPF process control models. MST from the Salt Waste Processing Facility (SWPF) is also considered in the study. The KT08-series of glasses was designed to evaluate any impacts of the inclusion of uranium and thorium in glasses containing the SCIX components. All but one of the study glasses were found to be amorphous by X-ray diffraction (XRD). One of the slowly cooled glasses contained a small amount of trevorite, which is typically found in DWPF-type glasses and had no practical impact on the durability of the glass. The measured Product Consistency Test (PCT) responses for the study glasses and the viscosities of the glasses were well predicted by the current DWPF models. No unexpected issues were encountered when uranium and thorium were added to the glasses with SCIX components.

Fox, K.; Edwards, T.

2012-01-11T23:59:59.000Z

162

Dielectric properties of MgO-doped compositionally graded multilayer barium strontium titanate films  

E-Print Network [OSTI]

Dielectric properties of MgO-doped compositionally graded multilayer barium strontium titanate shifters and filters operat- ing in the microwave regime.1­4 Ferroelectrics FEs such as barium strontium in monolithic BST films especially with low strontium content, although the addition of MgO causes a reduction

Alpay, S. Pamir

163

The role of photochemistry in Titans atmospheric chemistry James Ferris a,*, Buu Tran a  

E-Print Network [OSTI]

performed to simulate the action of long wavelength solar UV light on Titans atmosphere. The exper- iments of solar ultraviolet (UV) light and Saturns magnetospheric electrons on the methane and nitrogen in its of Life and Department of Chemistry, Rensselaer Polytechnic Institute, 110 8th Street, Troy, NY 12180, USA

Ferris, James P.

164

Cassini/VIMS hyperspectral observations of the HUYGENS landing site on Titan  

E-Print Network [OSTI]

Titan is one of the primary scientific objectives of the NASA ESA ASI Cassini Huygens mission. Scattering by haze particles in Titan's atmosphere and numerous methane absorptions dramatically veil Titan's surface in the visible range, though it can be studied more easily in some narrow infrared windows. The Visual and Infrared Mapping Spectrometer (VIMS) instrument onboard the Cassini spacecraft successfully imaged its surface in the atmospheric windows, taking hyperspectral images in the range 0.4 5.2 ?m. On 26 October (TA flyby) and 13 December 2004 (TB flyby), the Cassini Huygens mission flew over Titan at an altitude lower than 1200 km at closest approach. We report here on the analysis of VIMS images of the Huygens landing site acquired at TA and TB, with a spatial resolution ranging from 16 to14.4 km/pixel. The pure atmospheric backscattering component is corrected by using both an empirical method and a first-order theoretical model. Both approaches provide consistent results. After the removal of scat...

Rodrguez, S; Sotin, C; Clnet, H; Clark, R N; Buratti, B; Brown, R H; Mccord, T B; Nicholson, P D; Baines, K H; 10.1016/J.PSS.2006.06.016

2009-01-01T23:59:59.000Z

165

CASSINI VIMS AND ALTIMETER JOINT STUDY OF TITAN SURFACE. S. Rodriguez1 , M. Crapeau2  

E-Print Network [OSTI]

CASSINI VIMS AND ALTIMETER JOINT STUDY OF TITAN SURFACE. S. Rodriguez1 , M. Crapeau2 , S. Le.H. Baines4 and the VIMS and RADAR science teams,1 Laboratoire AIM, Centre d'étude de Saclay, DAPNIA of an unclouded low atmos- phere [2,3]. Onboard the Cassini spacecraft, the VIMS (Visual and Infrared Mapping

Paris-Sud XI, Université de

166

No oceans on Titan from the absence of a near-infrared specular reflection  

E-Print Network [OSTI]

No oceans on Titan from the absence of a near-infrared specular reflection R. A. West1 , M. E shown specular reflection are shown in Fig. 2. To understand how sensitive the near-infrared images-based observations (at near-infrared wavelengths) and calculations showing that there is no evidence thus far

Brown, Michael E.

167

Synthesis and Electric Field-Manipulation of High Aspect Ratio Barium Titanate  

E-Print Network [OSTI]

and shapes of titanium dioxide (TiO2) and barium titanate (BaTiO3) nanoparticles were purchased and measured. However, after a number of experiments detailed in the thesis, it was found that none of the commercially available nanoparticles could satisfy our...

Li, Junjia

2012-07-16T23:59:59.000Z

168

TOPOGRAPHY OF TITAN'S ARCTIC LAKE DISTRICT: IMPLICATIONS FOR SUBSURFACE LIQUID ALKANE FLOW. K. L. Mitchell1  

E-Print Network [OSTI]

the calibration of overlapping Titan SAR imagery obtained from different antenna feeds (beams) of the RADAR: The multi-beam nature of the Cas- sini RADAR instrument makes possible the applica- tion of the SAR with SAR footprints. In its original implementation, the SARTopo algorithms smooth the noisy data by 51

169

INVARIANT MANIFOLDS, DISCRETE MECHANICS, AND TRAJECTORY DESIGN FOR A MISSION TO TITAN  

E-Print Network [OSTI]

denser than that of any other moon in the solar system, Saturn's largest moon Titan is a treasure trove Systems, California Institute of Technology, MC 107-81, Pasadena, California 91125, USA. E-mail: egawlik@caltech.edu. Control and Dynamical Systems, California Institute of Technology, MC 107-81, Pasadena, California 91125

Marsden, Jerrold

170

Titan's ionosphere: Model comparisons with Cassini Ta data T. E. Cravens,1  

E-Print Network [OSTI]

and measured electron densities along the spacecraft track. Ionization both by solar radiation and by incoming technique [Bird et al., 1997]. Many models of Titan's ionosphere have been constructed over the past decade below the exobase [Waite et al., 2005]. The solar zenith angle (SZA) and latitude at CA were 91

California at Berkeley, University of

171

Clathrate hydrates as a sink of noble gases in Titan's atmosphere  

E-Print Network [OSTI]

We use a statistical thermodynamic approach to determine the composition of clathrate hydrates which may form from a multiple compound gas whose composition is similar to that of Titan's atmosphere. Assuming that noble gases are initially present in this gas phase, we calculate the ratios of xenon, krypton and argon to species trapped in clathrate hydrates. We find that these ratios calculated for xenon and krypton are several orders of magnitude higher than in the coexisting gas at temperature and pressure conditions close to those of Titan's present atmosphere at ground level. Furthermore we show that, by contrast, argon is poorly trapped in these ices. This trapping mechanism implies that the gas-phase is progressively depleted in xenon and krypton when the coexisting clathrate hydrates form whereas the initial abundance of argon remains almost constant. Our results are thus compatible with the deficiency of Titan's atmosphere in xenon and krypton measured by the {\\it Huygens} probe during its descent on January 14, 2005. However, in order to interpret the subsolar abundance of primordial Ar also revealed by {\\it Huygens}, other processes that occurred either during the formation of Titan or during its evolution must be also invoked.

C. Thomas; O. Mousis; V. Ballenegger; S. Picaud

2007-08-16T23:59:59.000Z

172

Titan's rotational state : The effects of a forced "free" resonant wobble  

E-Print Network [OSTI]

In Noyelles et al. (2008, Astron. Astrophys., 478, 959-970), a resonance involving the wobble of Titan is hinted. This paper studies this scenario and its consequences. The first step is to build an accurate analytical model that would help to find the likely resonances in the rotation of every synchronous body. In this model, I take the orbital eccentricity of the body into account, as well as its variable inclination with respect to Saturn's equator. Then an analytical study using the second fundamental model of the resonance is performed to study the resonance of interest. Finally, I study the dissipative consequences of this resonance. I find that this resonance may have increased the wobble of Titan by several degrees. For instance, if Titan's polar momentum C is equal to 0.355MR_T^2 (M and R_T being respectively Titan's mass and radius), the wobble might be forced to 41 degrees. Thanks to an original formula, I find that the dissipation associated with the forced wobble might not be negligible compared to the contribution of the eccentricity. I also suspect that, due to the forced wobble, Titan's period of rotation may be somewhat underestimated by observers. Finally, I use the analytical model presented in this paper to compute the periods of the free librations of the four Galilean satellites as well as the Saturnian satellite Rhea. For Io and Europa, the results are consistent with previous studies. For the other satellites, the periods of the free librations are respectively 186.37 d, 23.38 y and 30.08 y for Ganymede, 2.44 y, 209.32 y and 356.54 y for Callisto, and 51.84 d, 2.60 y and 3.59 y for Rhea.

B. Noyelles

2008-03-12T23:59:59.000Z

173

Clathration of Volatiles in the Solar Nebula and Implications for the Origin of Titan's atmosphere  

E-Print Network [OSTI]

We describe a scenario of Titan's formation matching the constraints imposed by its current atmospheric composition. Assuming that the abundances of all elements, including oxygen, are solar in the outer nebula, we show that the icy planetesimals were agglomerated in the feeding zone of Saturn from a mixture of clathrates with multiple guest species, so-called stochiometric hydrates such as ammonia hydrate, and pure condensates. We also use a statistical thermodynamic approach to constrain the composition of multiple guest clathrates formed in the solar nebula. We then infer that krypton and xenon, that are expected to condense in the 20-30 K temperature range in the solar nebula, are trapped in clathrates at higher temperatures than 50 K. Once formed, these ices either were accreted by Saturn or remained embedded in its surrounding subnebula until they found their way into the regular satellites growing around Saturn. In order to explain the carbon monoxide and primordial argon deficiencies of Titan's atmosphere, we suggest that the satellite was formed from icy planetesimals initially produced in the solar nebula and that were partially devolatilized at a temperature not exceeding 50 K during their migration within Saturn's subnebula. The observed deficiencies of Titan's atmosphere in krypton and xenon could result from other processes that may have occurred both prior or after the completion of Titan. Thus, krypton and xenon may have been sequestrated in the form of XH3+ complexes in the solar nebula gas phase, causing the formation of noble gas-poor planetesimals ultimately accreted by Titan. Alternatively, krypton and xenon may have also been trapped efficiently in clathrates located on the satellite's surface or in its atmospheric haze.

Olivier Mousis; Jonathan I. Lunine; Caroline Thomas; Matthew Pasek; Ulysse Marboeuf; Yann Alibert; Vincent Ballenegger; Daniel Cordier; Yves Ellinger; Francoise Pauzat; Sylvain Picaud

2008-10-01T23:59:59.000Z

174

TITAN code development for application to a PWR steam line break accident : final report 1983-1984  

E-Print Network [OSTI]

Modification of the TITAN computer code which enables it to be applied to a PWR steam line break accident has been accomplished. The code now has the capability of simulating an asymmetric inlet coolant temperature transient ...

Tsai, Chon-Kwo

1984-01-01T23:59:59.000Z

175

RADIAL TRANSPORT EFFECTS ON ECCD IN THE TCV AND DIII-D TOKAMAKS AND ON OHMIC DISCHARGES IN THE MST RFP  

SciTech Connect (OSTI)

The comprehensive CQL3D Fokker-Planck/Quasilinear simulation code has been benchmarked against experiment over a wide range of electron cyclotron conditions in the DIII-D tokamak (C.C. Petty et al., 14th Topical Conf. on RF Power in Plasmas, 2002). The same code, in disagreement with experiment, gives 560 kA of ECCD for a well documented, completely ECCD-driven, 100 kA TCV shot [O. Sauter et al, PRL, 2000]. Recent work (R.W. Harvey et al, Phys. Rev. Lett., 2002) has resolved the differences as due to radial transport at a level closely consistent with ITER scaling. Transport does not substantially affect DIII-D ECCD, but at similar ECH power has an overwhelming effect on the much smaller TCV. The transport is consistent with electrostatic-type diffusion (D{sub {rho}{rho}} constant in velocity-space) and not with a magnetic-type diffusion (D{sub {rho}{rho}} {proportional_to} |v{parallel}|). Fokker-Planck simulation of Ohmic reversed field pinch (RFP) discharges in the MST device reveals transport velocity dependence stronger than |v{parallel}| will give agreement with current and soft X-ray spectra in standard discharges, but in the higher confinement, current profile controlled PPCD discharges, transport is again electrostatic-like. This is consistent with the object of PPCD, which is to replace magnetic turbulence driven current with auxiliary CD to improve transport. The tokamak and high-confinement RFP results mutually reinforce the constant-in-velocity-space ''electrostatic-type turbulence'' conclusion. The steady-state energy and toroidal current are governed by the same radial transport equation.

HARVEY, R.W.; SAUTER, O.; PRATER, R.; NIKKOLA, P.; O'CONNELL, R.; FOREST, C.B.

2002-07-01T23:59:59.000Z

176

Demonstration of Small Tank Tetraphenylborate Precipitation Process Using Savannah River Site High Level Waste  

SciTech Connect (OSTI)

This report details the experimental effort to demonstrate the continuous precipitation of cesium from Savannah River Site High Level Waste using sodium tetraphenylborate. In addition, the experiments examined the removal of strontium and various actinides through addition of monosodium titanate.

Peters, T.B.

2001-09-10T23:59:59.000Z

177

Global circulation as the main source of cloud activity on Titan  

E-Print Network [OSTI]

Clouds on Titan result from the condensation of methane and ethane and, as on other planets, are primarily structured by circulation of the atmosphere. At present, cloud activity mainly occurs in the southern (summer) hemisphere, arising near the pole and at mid-latitudes from cumulus updrafts triggered by surface heating and/or local methane sources, and at the north (winter) pole, resulting from the subsidence and condensation of ethane-rich air into the colder troposphere. General circulation models predict that this distribution should change with the seasons on a 15-year timescale, and that clouds should develop under certain circumstances at temperate latitudes (~40\\degree) in the winter hemisphere. The models, however, have hitherto been poorly constrained and their long-term predictions have not yet been observationally verified. Here we report that the global spatial cloud coverage on Titan is in general agreement with the models, confirming that cloud activity is mainly controlled by the global circ...

Rodriguez, Sbastien; Rannou, Pascal; Tobie, Gabriel; Baines, Kevin H; Barnes, Jason W; Griffith, Caitlin A; Hirtzig, Mathieu; Pitman, Karly M; Sotin, Christophe; Brown, Robert H; Buratti, Bonnie J; Clark, Roger N; Nicholson, Phil D; 10.1038/NATURE08014

2009-01-01T23:59:59.000Z

178

Thermal tunability in terahertz metamaterials fabricated on strontium titanate single crystal substrates  

E-Print Network [OSTI]

We report an experimental demonstration of thermal tuning of resonance frequency in a planar terahertz metamaterial consisting of a gold split-ring resonator array fabricated on a bulk single crystal strontium titanate (SrTiO3) substrate. Cooling the metamaterial starting from 409 K down to 150 K causes about 50% shift in resonance frequency as compare to its room temperature resonance, and there is very little variation in resonance strength. The resonance shift is due to the temperature-dependent refractive index (or the dielectric constant) of the strontium titanate. The experiment opens up avenues for designing tunable terahertz devices by exploiting the temperature sensitive characteristic of high dielectric constant substrates and complex metal oxide materials.

Singh, Ranjan; Jia, Q X; Taylor, Antoinette J; Chen, Hou-Tong

2011-01-01T23:59:59.000Z

179

ACTINIDE REMOVAL PROCESS SAMPLE ANALYSIS, CHEMICAL MODELING, AND FILTRATION EVALUATION  

SciTech Connect (OSTI)

Filtration within the Actinide Removal Process (ARP) currently limits the throughput in interim salt processing at the Savannah River Site. In this process, batches of salt solution with Monosodium Titanate (MST) sorbent are concentrated by crossflow filtration. The filtrate is subsequently processed to remove cesium in the Modular Caustic Side Solvent Extraction Unit (MCU) followed by disposal in saltstone grout. The concentrated MST slurry is washed and sent to the Defense Waste Processing Facility (DWPF) for vitrification. During recent ARP processing, there has been a degradation of filter performance manifested as the inability to maintain high filtrate flux throughout a multi-batch cycle. The objectives of this effort were to characterize the feed streams, to determine if solids (in addition to MST) are precipitating and causing the degraded performance of the filters, and to assess the particle size and rheological data to address potential filtration impacts. Equilibrium modelling with OLI Analyzer{sup TM} and OLI ESP{sup TM} was performed to determine chemical components at risk of precipitation and to simulate the ARP process. The performance of ARP filtration was evaluated to review potential causes of the observed filter behavior. Task activities for this study included extensive physical and chemical analysis of samples from the Late Wash Pump Tank (LWPT) and the Late Wash Hold Tank (LWHT) within ARP as well as samples of the tank farm feed from Tank 49H. The samples from the LWPT and LWHT were obtained from several stages of processing of Salt Batch 6D, Cycle 6, Batch 16.

Martino, C.; Herman, D.; Pike, J.; Peters, T.

2014-06-05T23:59:59.000Z

180

Pb nanowire formation on Al/lead zirconate titanate surfaces in high-pressure hydrogen  

SciTech Connect (OSTI)

Thin films of Al on lead zirconate titanate (PZT) annealed in high-pressure hydrogen at 100C exhibit surface Pb nanowire growth. Wire diameter is approximately 80 nm and length can exceed 100 microns. Based on microstructural analysis using electron microscopy and ion scattering, a vapor-solid scheme with hydrogen as a carrier gas was proposed as a growth mechanism. We expect that these observations may lead to controlled Pb nanowires growth through pattering of the Al film.

Alvine, Kyle J.; Shutthanandan, V.; Arey, Bruce W.; Wang, Chong M.; Bennett, Wendy D.; Pitman, Stan G.

2012-07-12T23:59:59.000Z

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


181

The TITAN Reversed-Field Pinch fusion reactor study: Scoping phase report  

SciTech Connect (OSTI)

The TITAN research program is a multi-institutional effort to determine the potential of the Reversed-Field Pinch (RFP) magnetic fusion concept as a compact, high-power-density, and ''attractive'' fusion energy system from economic (cost of electricity, COE), environmental, and operational viewpoints. In particular, a high neutron wall loading design (18 MW/m/sup 2/) has been chosen as the reference case in order to quantify the issue of engineering practicality, to determine the physics requirements and plasma operating mode, to assess significant benefits of compact systems, and to illuminate the main drawbacks. The program has been divided into two phases, each roughly one year in length: the Scoping Phase and the Design Phase. During the scoping phase, the TITAN design team has defined the parameter space for a high mass power density (MPD) RFP reactor, and explored a variety of approaches to the design of major subsystems. Two major design approaches consistent with high MPD and low COE, the lithium-vanadium blanket design and aqueous loop-in-pool design, have been selected for more detailed engineering evaluation in the design phase. The program has retained a balance in its approach to investigating high MPD systems. On the one hand, parametric investigations of both subsystems and overall system performance are carried out. On the other hand, more detailed analysis and engineering design and integration are performed, appropriate to determining the technical feasibility of the high MPD approach to RFP fusion reactors. This report describes the work of the scoping phase activities of the TITAN program. A synopsis of the principal technical findings and a brief description of the TITAN multiple-design approach is given. The individual chapters on Plasma Physics and Engineering, Parameter Systems Studies, Divertor, Reactor Engineering, and Fusion Power Core Engineering have been cataloged separately.

Not Available

1987-01-01T23:59:59.000Z

182

Composite solid oxide fuel cell anode based on ceria and strontium titanate  

DOE Patents [OSTI]

An anode and method of making the same wherein the anode consists of two separate phases, one consisting of a doped strontium titanate phase and one consisting of a doped cerium oxide phase. The strontium titanate phase consists of Sr.sub.1-xM.sub.xTiO.sub.3-.delta., where M is either yttrium (Y), scandium (Sc), or lanthanum (La), where "x" may vary typically from about 0.01 to about 0.5, and where .delta. is indicative of some degree of oxygen non-stoichiometry. A small quantity of cerium may also substitute for titanium in the strontium titanate lattice. The cerium oxide consists of N.sub.yCe.sub.1-yO.sub.2-.delta., where N is either niobium (Nb), vanadium (V), antimony (Sb) or tantalum (Ta) and where "y" may vary typically from about 0.001 to about 0.1 and wherein the ratio of Ti in said first phase to the sum of Ce and N in the second phase is between about 0.2 to about 0.75. Small quantities of strontium, yttrium, and/or lanthanum may additionally substitute into the cerium oxide lattice. The combination of these two phases results in better performance than either phase used separately as an anode for solid oxide fuel cell or other electrochemical device.

Marina, Olga A. (Richland, WA); Pederson, Larry R. (Richland, WA)

2008-12-23T23:59:59.000Z

183

Integration of PanDA workload management system with Titan supercomputer at OLCF  

E-Print Network [OSTI]

The PanDA (Production and Distributed Analysis) workload management system (WMS) was developed to meet the scale and complexity of LHC distributed computing for the ATLAS experiment. While PanDA currently uses more than 100,000 cores at well over 100 Grid sites with a peak performance of 0.3 petaFLOPS, next LHC data taking run will require more resources than Grid computing can possibly provide. To alleviate these challenges, ATLAS is engaged in an ambitious program to expand the current computing model to include additional resources such as the opportunistic use of supercomputers. We will describe a project aimed at integration of PanDA WMS with Titan supercomputer at Oak Ridge Leadership Computing Facility (OLCF). Current approach utilizes modified PanDA pilot framework for job submission to Titan's batch queues and local data management, with light-weight MPI wrappers to run single threaded workloads in parallel on Titan's multi-core worker nodes. It also gives PanDA new capability to collect, in real tim...

Panitkin, Sergey; The ATLAS collaboration; Klimentov, Alexei; Oleynik, Danila; Petrosyan, Artem; Schovancova, Jaroslava; Vaniachine, Alexandre; Wenaus, Torre

2015-01-01T23:59:59.000Z

184

David Teter, MST Deputy Division Leader, MST: Los Alamos National  

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

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

185

Los Alamos: MST: MST-6: EML: Electron Microscopy Laboratory  

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

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186

Los Alamos: MST: MST-6: EML: Electron Microscopy Laboratory  

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

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187

Los Alamos: MST: MST-6: EML: Electron Microscopy Laboratory  

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

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188

Los Alamos: MST: MST-6: EML: Electron Microscopy Laboratory  

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

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189

Los Alamos: MST: MST-6: EML: Electron Microscopy Laboratory  

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

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190

Los Alamos: MST: MST-6: EML: Electron Microscopy Laboratory  

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

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191

Synthesis and electrical analysis of nano-crystalline barium titanate nanocomposites for use in high-energy density applications.  

SciTech Connect (OSTI)

Ceramic based nanocomposites have recently demonstrated the ability to provide enhanced permittivity, increased dielectric breakdown strength, and reduced electromechanical strain making them potential materials systems for high energy density applications. A systematic characterization and optimization of barium titanate and PLZT based nanoparticle composites employing a glass or polymer matrix to yield a high energy density component will be presented. This work will present the systematic characterization and optimization of barium titanate and lead lanthanum zirconate titanate nanoparticle based ceramics. The nanoparticles have been synthesized using solution and pH-based synthesis processing routes and employed to fabricate polycrystalline ceramic and nanocomposite based components. The dielectric/ferroelectric properties of these various components have been gauged by impedance analysis and electromechanical response and will be discussed.

DiAntonio, Christopher Brian; Yang, Pin; Chavez, Tom P.; Huber, Dale L.; Winter, Michael R.; Monson, Todd C.; Roesler, Alexander William

2010-10-01T23:59:59.000Z

192

Links - MST - UW Plasma Physics  

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

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193

Device - MST - UW Plasma Physics  

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

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194

Structural and crystal chemical properties of rare-earth titanate pyrochlores  

SciTech Connect (OSTI)

Rare-earth titanates, RE2Ti2O7 (where RE = a rare-earth) with the pyrochlore structure continue to be investigated for use as potential stable host materials for nuclear and actinide-rich wastes. Accordingly, the present work is directed towards the elucidation of the fundamental structural, physical, and thermochemical properties of this class of compounds. Single-crystals of the rare earth pyrochlores were synthesized using a high-temperature flux technique and were subsequently characterized using single-crystal X-ray diffraction. The cubic lattice parameters display an approximately linear correlation with the RE-site cation radius. Theoretical calculations of the lattice constants and bond lengths of the subject materials were carried out using density functional theory, and the results are compared to the experimental values. The Sm and Eu titanates exhibit a covalency increase between the REO8 and TiO6 polyhedra resulting in a deviation from the increasing linear lattice parameter through the transition series. Gd2Ti2O7 with the 4f7 half-filled f-orbital Gd3+ sub-shell exhibits the lowest 48f oxygen positional parameter. The coefficient of thermal expansion for the rare-earth titanate series is approximately linear, and it has a range of 10.1 11.2 x 10-6 C-1. Raman spectroscopy indicated that the ~530 cm-1 peak associated with the Ti-O stretching mode follows a general trend of decreasing frequency with increasing RE reduced mass.

Farmer, James Matthew [ORNL] [ORNL; Boatner, Lynn A [ORNL] [ORNL; Chakoumakos, Bryan C [ORNL] [ORNL; Du, Mao-Hua [ORNL] [ORNL; Lance, Michael J [ORNL] [ORNL; Rawn, Claudia J. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Bryan, Jeff C. [University of Wisconsin] [University of Wisconsin

2014-01-01T23:59:59.000Z

195

Impact of vacancy clusters on characteristic resistance change of nonstoichiometric strontium titanate nano-film  

SciTech Connect (OSTI)

In practical applications to bipolar resistance switching (BRS) memory devices with enhanced performance and high-scalability, oxide materials are commonly fabricated to highly nonstoichiometric and nanometer scale films. In this study, we fabricated ultrathin strontium titanate film, which shows two types of BRS behavior. By using micro-beam X-ray photoemission spectroscopy, the changes of core-level spectra depending on the resistance states are spatially resolved. Experimental and calculated results demonstrated that the fundamental switching mechanism in the two types of BRS is originated from the migration of anion and cation vacancies and the formation of insulating vacancy clusters near vicinity of the interface.

Su Kim, Yong, E-mail: ysukim@phya.snu.ac.kr; Jee Yoon, Moon; Hee Sohn, Chang; Buhm Lee, Shin; Lee, Daesu; Chul Jeon, Byung; Keun Yoo, Hyang; Won Noh, Tae [CFI-CES, IBS and Department of Physics and Astronomy, Seoul National University, Seoul 151-747 (Korea, Republic of); Kim, Jiyeon; Yu, Jaejun [CSCMR, Department of Physics and Astronomy, Seoul National University, Seoul 151-747 (Korea, Republic of); Bostwick, Aaron; Rotenberg, Eli [Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); Don Bu, Sang [Department of Physics, Chonbuk National University, Jeonju 561-756 (Korea, Republic of); Simon Mun, Bongjin [Department of Physics and Photon Science, School of Physics and Chemistry, Ertl Center for Electrochemistry and Catalyst, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)

2014-01-06T23:59:59.000Z

196

Very Stable Electron Field Emission From Strontium Titanate Coated Carbon Nanotube Matrices With Low Emission Thresholds  

SciTech Connect (OSTI)

PMMA-STO-CNT matrices were created by opened-tip vertically-aligned multiwalled carbon nanotubes (VA-MWCNTs) with conformal coating of strontium titanate and Poly(methyl methacrylate). Emission threshold of 0.8 V/?m was demonstrated, about five-fold lower than that of the as-grown VAMWCNTs. Theoretical simulation and modeling suggest that PMMA-STO-CNT matrices have suppressed screening effects and Coulombs repulsion forces between electrons in adjacent CNTs, leading to low emission threshold, high emission density, and prolong emission stability. These findings are important for practical application of VA-MWCNTs in field emission devices.

Pandey, Archana; Prasad, Abhishek; Moscatello, Jason; Engelhard, Mark H.; Wang, Chong M.; Yap, Yoke K.

2013-01-22T23:59:59.000Z

197

Relationship between orientation factor of lead zirconate titanate nanowires and dielectric permittivity of nanocomposites  

SciTech Connect (OSTI)

The relationship between the orientation of lead zirconate titanate (PZT) nanowires dispersed in nanocomposites and the resulting dielectric constants are quantified. The orientation of the PZT nanowires embedded in a polymer matrix is controlled by varying the draw ratio and subsequently quantified using Herman's Orientation Factor. Consequently, it is demonstrated that the dielectric constants of nanocomposites are improved by increasing the orientation factor of the PZT nanowires. This technique is proposed to improve the dielectric constant of the nanocomposites without the need for additional filler volume fraction since the nanocomposites are utilized in a wide range of high dielectric permittivity electronic components.

Tang, Haixiong, E-mail: htang15@ufl.edu, E-mail: hsodano@ufl.edu [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States)] [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States); Malakooti, Mohammad H. [Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611 (United States)] [Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611 (United States); Sodano, Henry A., E-mail: htang15@ufl.edu, E-mail: hsodano@ufl.edu [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States); Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611 (United States)

2013-11-25T23:59:59.000Z

198

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

SciTech Connect (OSTI)

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

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

2012-12-15T23:59:59.000Z

199

Titan Propels GE Wind Turbine Research into New Territory | ornl.gov  

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

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200

Titan propels GE wind turbine research into new territory | ornl.gov  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe1A:decisional. 1 B O N N ESpectrometry.Titan

Note: This page contains sample records for the topic "monosodium titanate mst" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

TITAN's Digital RFQ Ion Beam Cooler and Buncher, Operation and Performance  

E-Print Network [OSTI]

We present a description of the Radio Frequency Quadrupole (RFQ) ion trap built as part of the TITAN facility. It consists of a gas-filled, segmented, linear Paul trap and is the first stage of the TITAN setup with the purpose of cooling and bunching radioactive ion beams delivered from ISAC-TRIUMF. This is the first such device to be driven digitally, i.e., using a high voltage ($V_{pp} = \\rm{400 \\, V}$), wide bandwidth ($0.2 < f < 1.2 \\, \\rm{MHz}$) square-wave as compared to the typical sinusoidal wave form. Results from the commissioning of the device as well as systematic studies with stable and radioactive ions are presented including efficiency measurements with stable $^{133}$Cs and radioactive $^{124, 126}$Cs. A novel and unique mode of operation of this device is also demonstrated where the cooled ion bunches are extracted in reverse mode, i.e., in the same direction as previously injected.

T. Brunner; M. J. Smith; M. Brodeur; S. Ettenauer; A. T. Gallant; V. V. Simon; A. Chaudhuri A. Lapierre; E. Man; R. Ringle; M. C. Simon; J. A. Vaz; P. Delheij; M. Good; M. R. Pearson; J. Dilling

2012-02-07T23:59:59.000Z

202

Formation and structural characterization of potassium titanates and the potassium ion exchange property  

SciTech Connect (OSTI)

In the present work, K{sub 2}Ti{sub 2}O{sub 5}, K{sub 2}Ti{sub 4}O{sub 9} and K{sub 2}Ti{sub 6}O{sub 13} are synthesized by solid state method. Their structures and morphologies are characterized by X-ray diffraction, Raman spectra and scanning electron microscopy. The binding energies of K, Ti and O in potassium titanates were then evaluated by X-ray photoelectron spectroscopy and compared with those in K/TiO{sub 2}. Finally the corresponding K ion exchange properties are investigated by synthesizing NO oxidation catalysts with Co(NO{sub 3}){sub 2} precursor. It is found that the binding energy of K in K{sub 2}Ti{sub 2}O{sub 5} is much higher than those in K{sub 2}Ti{sub 4}O{sub 9} and K{sub 2}Ti{sub 6}O{sub 13}, and because of which, it shows quite different catalytic performances. Compared with other potassium titanates, the K in K{sub 2}Ti{sub 2}O{sub 5} is much easier to be exchanged out.

Wang Qiang, E-mail: wulihe@postech.ac.kr [Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin, Heilongjiang, 150001 (China); School of Environmental Science and Engineering, POSTECH, San 31, Hyoja-Dong, Nam-gu, Pohang 790-784 (Korea, Republic of); Guo Zhanhu [Integrated Composites Laboratory (ICL), Dan F. Smith Department of Chemical Engineering, Lamar University, Beaumont, TX 77710 (United States); Chung, Jong Shik [School of Environmental Science and Engineering, POSTECH, San 31, Hyoja-Dong, Nam-gu, Pohang 790-784 (Korea, Republic of); Department of Chemical Engineering, POSTECH, San 31, Hyoja-Dong, Nam-gu, Pohang 790-784 (Korea, Republic of)

2009-10-15T23:59:59.000Z

203

INFRARED SPECTRA AND OPTICAL CONSTANTS OF NITRILE ICES RELEVANT TO TITAN's ATMOSPHERE  

SciTech Connect (OSTI)

Spectra and optical constants of nitrile ices known or suspected to be in Titan's atmosphere are presented from 2.0 to 333.3 {mu}m ({approx}5000-30 cm{sup -1}). These results are relevant to the ongoing modeling of Cassini CIRS observations of Titan's winter pole. Ices studied are: HCN, hydrogen cyanide; C{sub 2}N{sub 2}, cyanogen; CH{sub 3}CN, acetonitrile; C{sub 2}H{sub 5}CN, propionitrile; and HC{sub 3}N, cyanoacetylene. For each of these molecules, we also report new cryogenic measurements of the real refractive index, n, determined in both the amorphous and crystalline phases at 670 nm. These new values have been incorporated into our optical constant calculations. Spectra were measured and optical constants were calculated for each nitrile at a variety of temperatures, including, but not limited to, 20, 35, 50, 75, 95, and 110 K, in both the amorphous phase and the crystalline phase. This laboratory effort used a dedicated FTIR spectrometer to record transmission spectra of thin-film ice samples. Laser interference was used to measure film thickness during condensation onto a transparent cold window attached to the tail section of a closed-cycle helium cryostat. Optical constants, real (n) and imaginary (k) refractive indices, were determined using Kramers-Kronig analysis. Our calculation reproduces the complete spectrum, including all interference effects.

Moore, Marla H.; Hudson, Reggie [NASA Goddard Space Flight Center, Code 691, Greenbelt, MD 20771 (United States); Ferrante, Robert F. [Chemistry Department, US Naval Academy, 572 Holloway Road, Annapolis, MD 21402 (United States); James Moore, W., E-mail: Marla.h.moore@nasa.go [USRA NASA Goddard Space Flight Center, Code 691, Greenbelt, MD 20771 (United States)

2010-11-15T23:59:59.000Z

204

AlGaN/GaN metal-oxide-semiconductor heterostructure field-effect transistors using barium strontium titanate  

E-Print Network [OSTI]

AlGaN/GaN metal-oxide-semiconductor heterostructure field-effect transistors using barium strontium-effect transistors have been formed by incorporating barium strontium titanate (BST) deposited by rf magnetron in increased leakage. Due to its large dielectric constant, barium strontium ti- tanate [Ba1-xSrxTiO3, (BST

York, Robert A.

205

The role of thermally-induced internal stresses on the tunability of textured barium strontium titanate films  

E-Print Network [OSTI]

The role of thermally-induced internal stresses on the tunability of textured barium strontium) The tunability of highly textured thin films of barium strontium titanate (Ba0.5Sr0.5TiO3, BST) is analyzed

Alpay, S. Pamir

206

Mapping and interpretation of Sinlap crater on Titan using Cassini VIMS and Stphane Le Moulic1,2  

E-Print Network [OSTI]

1 Mapping and interpretation of Sinlap crater on Titan using Cassini VIMS and RADAR data Stéphane- Huygens mission. Among these, Sinlap is the only one that has been observed both by the RADAR and VIMS in VIMS false color composites of band ratios in the Sinlap area, suggesting compositional heterogeneities

Paris-Sud XI, Université de

207

Infrared absorption of hydrogen-related defects in strontium titanate M. C. Tarun and M. D. McCluskeya)  

E-Print Network [OSTI]

in perovskite oxides, an important issue in fuel cells.16 In as- grown SrTiO3, isolated hydrogen forms a bondInfrared absorption of hydrogen-related defects in strontium titanate M. C. Tarun and M. D. Mc 2011) Hydrogen has a significant impact on the structural and electronic properties of metals

McCluskey, Matthew

208

SCIX IMPACT ON DWPF CPC  

SciTech Connect (OSTI)

A program was conducted to systematically evaluate potential impacts of the proposed Small Column Ion Exchange (SCIX) process on the Defense Waste Processing Facility (DWPF) Chemical Processing Cell (CPC). The program involved a series of interrelated tasks. Past studies of the impact of crystalline silicotitanate (CST) and monosodium titanate (MST) on DWPF were reviewed. Paper studies and material balance calculations were used to establish reasonable bounding levels of CST and MST in sludge. Following the paper studies, Sludge Batch 10 (SB10) simulant was modified to have both bounding and intermediate levels of MST and ground CST. The SCIX flow sheet includes grinding of the CST which is larger than DWPF frit when not ground. Nominal ground CST was not yet available, therefore a similar CST ground previously in Savannah River National Laboratory (SRNL) was used. It was believed that this CST was over ground and that it would bound the impact of nominal CST on sludge slurry properties. Lab-scale simulations of the DWPF CPC were conducted using SB10 simulants with no, intermediate, and bounding levels of CST and MST. Tests included both the Sludge Receipt and Adjustment Tank (SRAT) and Slurry Mix Evaporator (SME) cycles. Simulations were performed at high and low acid stoichiometry. A demonstration of the extended CPC flowsheet was made that included streams from the site interim salt processing operations. A simulation using irradiated CST and MST was also completed. An extensive set of rheological measurements was made to search for potential adverse consequences of CST and MST and slurry rheology in the CPC. The SCIX CPC impact program was conducted in parallel with a program to evaluate the impact of SCIX on the final DWPF glass waste form and on the DWPF melter throughput. The studies must be considered together when evaluating the full impact of SCIX on DWPF. Due to the fact that the alternant flowsheet for DWPF has not been selected, this study did not consider the impact of proposed future alternative DWPF CPC flowsheets. The impact of the SCIX streams on DWPF processing using the selected flowsheet need to be considered as part of the technical baseline studies for coupled processing with the selected flowsheet. In addition, the downstream impact of aluminum dissolution on waste containing CST and MST has not yet been evaluated. The current baseline would not subject CST to the aluminum dissolution process and technical concerns with performing the dissolution with CST have been expressed. Should this option become feasible, the downstream impact should be considered. The main area of concern for DWPF from aluminum dissolution is an impact on rheology. The SCIX project is planning for SRNL to complete MST, CST, and sludge rheology testing to evaluate any expected changes. The impact of ground CST transport and flush water on the DWPF CPC feed tank (and potential need for decanting) has not been defined or studied.

Koopman, D.

2011-07-14T23:59:59.000Z

209

Role of Amorphous Boundary Layer in Enhancing Ionic Conductivity of Lithiumlanthanumtitanate Electrolyte  

SciTech Connect (OSTI)

The low ionic conductivity is a bottleneck of the inorganic solid state electrolyte used for lithium ion battery. In ceramic electrolytes, grain boundary usually dominates the total conductivity. In order to improve the grain boundary effect, an amorphous silica layer is introduced into grain boundary of ceramic electrolytes based on lithium-lanthanum-titanate, as evidenced by electron microscopy. The results showed that the total ionic conductivity could be to be enhanced over 1 x 10{sup -4} S/cm at room temperature. The reasons can be attributed to removing the anisotropy of outer-shell of grains, supplement of lithium ions in various sites in grain boundary and close bindings among grains by the amorphous boundary layer among grains.

Mei, A.; Wang, X.; Lana, J.-L.; Fenga, Y.-C.; Genga, H.-X.; Lina, Y.-H.; Nana, C.-W.

2010-03-01T23:59:59.000Z

210

Upper limits for undetected trace species in the stratosphere of Titan  

SciTech Connect (OSTI)

In this paper we describe a first quantitative search for several molecules in Titans stratosphere ni Cassini CIRS infrared spectra. These are: ammonia (NH3), methanol (CH3OH), formaldehyde (H2CO), and acetonitrile (CH3CN), all of which are predicted by photochemical models but only the last of which observed, and not in the infrared,. We find non-detections in all cases, but derive upper limits on the abundances from low-noise observations at 25 degreesS and 75 degreesN. Comparing these constraints to model predictions, we conclude that CIRS is highly unlikely to see NH3 or CH3OH emissions. However, CH3CN and H2CO are closer to CIRS detectability, and we suggest ways in which the sensitivity threshold may be lowered towards this goal.

Nixon, Connor A.; Achterberg, Richard K.; Teanby, Nicholas A.; Irwin, Patrick G.; Flaud, Jean Marie; Kleiner, I.; Dehayem-kamadjeu, A.; Brown, Linda R.; Sams, Robert L.; Bezard, Bruno; Coustenis, Athena; Ansty, Todd M.; Mamoutkine, Andrei; Vinatier, Sandrine; Bjoraker, Gordon L.; Jennings, Donald E.; Romani, Paul N.; Flasar, F. M.

2010-11-01T23:59:59.000Z

211

Substrate Clamping Effects on Irreversible Domain Wall Dynamics in Lead Zirconate Titanate Thin Films  

SciTech Connect (OSTI)

The role of long-range strain interactions on domain wall dynamics is explored through macroscopic and local measurements of nonlinear behavior in mechanically clamped and released polycrystalline lead zirconate-titanate (PZT) films. Released films show a dramatic change in the global dielectric nonlinearity and its frequency dependence as a function of mechanical clamping. Furthermore, we observe a transition from strong clustering of the nonlinear response for the clamped case to almost uniform nonlinearity for the released film. This behavior is ascribed to increased mobility of domain walls. These results suggest the dominant role of collective strain interactions mediated by the local and global mechanical boundary conditions on the domain wall dynamics. The work presented in this Letter demonstrates that measurements on clamped films may considerably underestimate the piezoelectric coefficients and coupling constants of released structures used in microelectromechanical systems, energy harvesting systems, and microrobots.

Griggio, Flavio [ORNL; Jesse, Stephen [ORNL; Kumar, Amit [ORNL; Ovchinnikov, Oleg S [ORNL; Kim, H. [Pennsylvania State University, University Park, PA; Jackson, T. N. [Pennsylvania State University, University Park, PA; Damjanovic, Dragan [ORNL; Kalinin, Sergei V [ORNL; Trolier-Mckinstry, Susan E [ORNL

2012-01-01T23:59:59.000Z

212

Blocking effect of crystalglass interface in lanthanum doped barium strontium titanate glassceramics  

SciTech Connect (OSTI)

Graphical abstract: The blocking effect of the crystalglass interface on the carrier transport behavior in the lanthanum doped barium strontium titanate glassceramics: preparation and characterization. - Highlights: La{sub 2}O{sub 3} addition promotes the crystallization of the major crystalline phase. The Z? and M? peaks exist a significant mismatch for 0.5 mol% La{sub 2}O{sub 3} addition. The Z? and M? peaks separate obviously for 1.0 mol% La{sub 2}O{sub 3} addition. Crystallite impedance decreases while crystalglass interface impedance increases. La{sub 2}O{sub 3} addition increases blocking factor of the crystalglass interface. - Abstract: The microstructures and dielectric properties in La{sub 2}O{sub 3}-doped barium strontium titanate glassceramics have been investigated by scanning electron microscopy (SEM) and impedance spectroscopy. SEM analysis indicated that La{sub 2}O{sub 3} additive decreases the average crystallite size. Impedance spectroscopy revealed that the positions of Z? and M? peaks are close for undoped samples. When La{sub 2}O{sub 3} concentration is 0.5 mol%, the Z? and M? peaks show a significant mismatch. Furthermore, these peaks separate obviously for 1.0 mol% La{sub 2}O{sub 3} addition. With increasing La{sub 2}O{sub 3} concentration, the contribution of the crystallite impedance becomes smaller, while the contribution of the crystalglass interface impedance becomes larger. More interestingly, it was found that La{sub 2}O{sub 3} additive increases blocking factor of the crystalglass interface in the temperature range of 250450 C. This may be attributed to a decrease of activation energy of the crystallite and an increase of the crystalglass interface area.

Wang, Xiangrong [Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Zhang, Yong, E-mail: yzhang@tsinghua.edu.cn [Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China); Baturin, Ivan [Ferroelectric Laboratory, Institute of Natural Science, Ural Federal University, Ekaterinburg 620000 (Russian Federation); Liang, Tongxiang [Beijing Fine Ceramics Laboratory, State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China)

2013-10-15T23:59:59.000Z

213

Scalability Analysis of Gleipnir: A Memory Tracing and Profiling Tool, on Titan  

SciTech Connect (OSTI)

Application performance is hindered by a variety of factors but most notably driven by the well know CPU-memory speed gap (also known as the memory wall). Understanding application s memory behavior is key if we are trying to optimize performance. Understanding application performance properties is facilitated with various performance profiling tools. The scope of profiling tools varies in complexity, ease of deployment, profiling performance, and the detail of profiled information. Specifically, using profiling tools for performance analysis is a common task when optimizing and understanding scientific applications on complex and large scale systems such as Cray s XK7. This paper describes the performance characteristics of using Gleipnir, a memory tracing tool, on the Titan Cray XK7 system when instrumenting large applications such as the Community Earth System Model. Gleipnir is a memory tracing tool built as a plug-in tool for the Valgrind instrumentation framework. The goal of Gleipnir is to provide fine-grained trace information. The generated traces are a stream of executed memory transactions mapped to internal structures per process, thread, function, and finally the data structure or variable. Our focus was to expose tool performance characteristics when using Gleipnir with a combination of an external tools such as a cache simulator, Gl CSim, to characterize the tool s overall performance. In this paper we describe our experience with deploying Gleipnir on the Titan Cray XK7 system, report on the tool s ease-of-use, and analyze run-time performance characteristics under various workloads. While all performance aspects are important we mainly focus on I/O characteristics analysis due to the emphasis on the tools output which are trace-files. Moreover, the tool is dependent on the run-time system to provide the necessary infrastructure to expose low level system detail; therefore, we also discuss any theoretical benefits that can be achieved if such modules were present.

Janjusic, Tommy [ORNL; Kartsaklis, Christos [ORNL; Wang, Dali [ORNL

2013-01-01T23:59:59.000Z

214

SAMPLE RESULTS FROM THE INTEGRATED SALT DISPOSITION PROGRAM MACROBATCH 4 TANK 21H QUALIFICATION SAMPLES  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) analyzed samples from Tank 21H to qualify them for use in the Integrated Salt Disposition Program (ISDP) Batch 4 processing. All sample results agree with expectations based on prior analyses where available. No issues with the projected Salt Batch 4 strategy are identified. This revision includes additional data points that were not available in the original issue of the document, such as additional plutonium results, the results of the monosodium titanate (MST) sorption test and the extraction, scrub strip (ESS) test. This report covers the revision to the Tank 21H qualification sample results for Macrobatch (Salt Batch) 4 of the Integrated Salt Disposition Program (ISDP). A previous document covers initial characterization which includes results for a number of non-radiological analytes. These results were used to perform aluminum solubility modeling to determine the hydroxide needs for Salt Batch 4 to prevent the precipitation of solids. Sodium hydroxide was then added to Tank 21 and additional samples were pulled for the analyses discussed in this report. This work was specified by Task Technical Request and by Task Technical and Quality Assurance Plan (TTQAP).

Peters, T.; Fink, S.

2011-06-22T23:59:59.000Z

215

IMPACT OF THE SMALL COLUMN ION EXCHANGE PROCESS ON THE DEFENSE WASTE PROCESSING FACILITY - 12112  

SciTech Connect (OSTI)

The Savannah River Site (SRS) is investigating the deployment of a parallel technology to the Salt Waste Processing Facility (SWPF, presently under construction) to accelerate high activity salt waste processing. The proposed technology combines large waste tank strikes of monosodium titanate (MST) to sorb strontium and actinides with two ion exchange columns packed with crystalline silicotitanate (CST) resin to sorb cesium. The new process was designated Small Column Ion Exchange (SCIX), since the ion exchange columns were sized to fit within a waste storage tank riser. Loaded resins are to be combined with high activity sludge waste and fed to the Defense Waste Processing Facility (DWPF) for incorporation into the current glass waste form. Decontaminated salt solution produced by SCIX will be fed to the SRS Saltstone Facility for on-site immobilization as a grout waste form. Determining the potential impact of SCIX resins on DWPF processing was the basis for this study. Accelerated salt waste treatment is projected to produce a significant savings in the overall life cycle cost of waste treatment at SRS.

Koopman, D.; Lambert, D.; Fox, K.; Stone, M.

2011-11-07T23:59:59.000Z

216

On the sol-gel synthesis of strontium-titanate thin films and the prospects of their use in electronics  

SciTech Connect (OSTI)

Strontium-titanate films obtained by the sol-gel technique are deposited onto silicon and silicon/oxide titanium/platinum substrates. The strontium-titanate phase is detected by the method of X-ray diffraction analysis after heat treatment at temperatures of 750 and 800C. The thickness of the films obtained by the spin-on method increases from 50 to 250 nm as the number of deposited layers is increased and is accompanied with an increase in the grain size in the films. Prospects of the development of the sol-gel technique for the formation of film components of electronic devices based on SrTiO{sub 3} xerogels are discussed.

Sohrabi Anaraki, H.; Gaponenko, N. V., E-mail: nik@nano.bsuir.edu.by; Rudenko, M. V.; Guk, A. F.; Zavadskij, S. M.; Golosov, D. A.; Kolosnitsyn, B. S. [Belarusian State University of Informatics and Radioelectronics (Belarus); Kolos, V. V.; Pyatlitskij, A. N.; Turtsevich, A. S. [Integral Enterprise (Belarus)

2014-12-15T23:59:59.000Z

217

Cerium-modified doped strontium titanate compositions for solid oxide fuel cell anodes and electrodes for other electrochemical devices  

DOE Patents [OSTI]

The present invention provides novel compositions that find advantageous use in making electrodes for electrochemical cells and electrochemical devices such as solid oxide fuel cells, electrolyzers, sensors, pumps and the like, the compositions comprising cerium-modified doped strontium titanate. The invention also provides novel methods for making and using anode material compositions and solid oxide fuel cells and solid oxide fuel cell assemblies having anodes comprising the compositions.

Marina, Olga A [Richland, WA; Stevenson, Jeffry W [Richland, WA

2010-11-23T23:59:59.000Z

218

Cerium-modified doped strontium titanate compositions for solid oxide fuel cell anodes and electrodes for other electrochemical devices  

DOE Patents [OSTI]

The present invention provides novel compositions that find advantageous use in making electrodes for electrochemical cells and electrochemical devices such as solid oxide fuel cells, electrolyzers, sensors, pumps and the like, the compositions comprising cerium-modified doped strontium titanate. The invention also provides novel methods for making and using anode material compositions and solid oxide fuel cells and solid oxide fuel cell assemblies having anodes comprising the compositions.

Marina, Olga A [Richland, WA; Stevenson, Jeffry W [Richland, WA

2010-03-02T23:59:59.000Z

219

CLOUD AND HAZE IN THE WINTER POLAR REGION OF TITAN OBSERVED WITH VISUAL AND INFRARED MAPPING SPECTROMETER ON BOARD CASSINI  

SciTech Connect (OSTI)

A large cloud in the north polar region of Titan was first observed by the Visual and Infrared Mapping Spectrometer (VIMS) in 2005 and then in 2006. This cloud, confined beyond the latitude 62 Degree-Sign N, is surrounded by a mixture of aerosol and mist probably lying in the low stratosphere and troposphere. Subsequent images of this region of Titan show a gradual vanishing of this cloud which was reported previously. In this paper, we characterize the physical properties of this cloud, haze, and mist as well as their time evolutions. We note several details on the images such as a secondary cloud above the main cloud and latitudes beyond 70 Degree-Sign N. We also show that the cloud disappearance leaves the polar region poorly loaded in aerosols, yielding an annular zone of aerosols between 50 Degree-Sign N and 65 Degree-Sign N. Our analysis suggests that this structure observed by VIMS in the near-IR is an annular structure observed by ISS on board Voyager one Titan year ago in 1980.

Rannou, P. [GSMA, UMR CNRS 7331, Universite de Reims Champagne-Ardenne (France); Le Mouelic, S. [LPGN, UMR CNRS 6112, Universite de Nantes (France); Sotin, C. [JPL, California Institute of Technology, PA (United States); Brown, R. H., E-mail: pascal.rannou@univ-reims.fr [LPL, University of Arizona, Tucson, AZ (United States)

2012-03-20T23:59:59.000Z

220

Self-irradiation damage of a curium-doped titanate ceramic containing sodium-rich high level nuclear waste  

SciTech Connect (OSTI)

This paper reports on the polyphase titanate ceramic containing sodium-rich simulated high-level nuclear waste doped with 0.69 wt% of {sup 244}Cm to accelerate long-term self-irradiation due to {alpha} decays. {alpha} autoradiography showed that {alpha} emissions were almost uniformly distributed throughout the curium-doped samples on a {gt} 20{mu}m scale although micropore surfaces and titanium oxide agglomerates were free of {alpha} emitting nuclides. The phase assemblage of the curium-doped titanate ceramic included freudenbergite and loveringite in addition to the more abundant oxide phases: hollandite, perovskite, and zirconolite. Accumulation of {alpha} decays was accompanied by a gradual decrease in density. The increment of density was {minus}1% after an equivalent age of 5000 yr. Leach tests showed a slight rend toward higher total release of curium with equivalent age. The release of soluble nonradioactive elements (e.g., Na, Cs, Sr, and Ca) in the oldest specimens (equivalent age, 2000 yr) varied from specimen to specimen but, on average, were higher than specimens that had suffered a lower radiation dose.

Miyazaki, T. (Second Dept. of Nuclear Business, Ibaraki Center, Chiyoda Maintenance Ltd., Asahi, Kashima, Ibaraki 314-14 (JP)); White, T.J. (Electron Microscope Centre, Univ. of Queensland, St. Lucia, Brisbane 4067 (AU)); Mitamura, H.; Matsumoto, S.; Nukaga, K.; Togashi, Y.; Sagawa, T.; Tashiro, S. (Dept. of Environmental Safety Research, Japan Atomic Energy Research Inst., Tokai, Naka, Ibaraki 319-11 (JP)); Levins, D.M. (Environmental Science Program, Australian Nuclear Science and Technology Organisation, Lucas Heights Research Lab., Lucas Heights, New South Wales (AU)); Kikuchi, A. (Dept. of Reactor Fuel Examination, Japan Atomic Energy Research Inst., Tokai, Naka, Ibaraki 319-11 (JP))

1990-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Elastic ice shells of synchronous moons: Implications for cracks on Europa and non-synchronous rotation of Titan  

E-Print Network [OSTI]

A number of synchronous moons are thought to harbor water oceans beneath their outer ice shells. A subsurface ocean frictionally decouples the shell from the interior. This decoupling has led to proposals that a weak tidal or atmospheric torque might cause the shell to rotate differentially with respect to the synchronously rotating interior. Applications along these lines have been made to Europa and Titan. As a result of centrifugal and tidal forces, the oceans of Europa and Titan have ellipsoidal figures whose long axes point toward the parent planet. Any rotation of the shell away from its equilibrium position induces strains thereby increasing its elastic energy. Thus the shell is coupled to the ocean by an elastic torque. Regarding Europa, it is shown that the tidal torque is far too weak to produce stresses that could fracture the ice shell, thus refuting an idea that has been widely advocated. An alternative formation mechanism for large cracks is proposed. Two years of Cassini RADAR observations of T...

Goldreich, Peter M

2009-01-01T23:59:59.000Z

222

Crossed Molecular Beams Study on the Formation of Vinylacetylene in Titan's Atmosphere Fangtong Zhang, Yong Seol Kim, and Ralf I. Kaiser*  

E-Print Network [OSTI]

), was investigated at a collision energy of 20.6 ( 0.4 kJ mol-1 utilizing the crossed-beams technique. Combined such as Titan's atmosphere via the neutral-neutral reaction of ethynyl radicals with ubiquitous ethylene and their role in the build-

Kaiser, Ralf I.

223

Geomorphological significance of Ontario Lacus on Titan: Integrated interpretation of Cassini VIMS, ISS and RADAR data and comparison with the Etosha Pan (Namibia)  

E-Print Network [OSTI]

Geomorphological significance of Ontario Lacus on Titan: Integrated interpretation of Cassini VIMS (ISS) in 2004 and 2005, Visual and Infrared Mapping Spectrometer (VIMS) in 2007 and 2009 and RADAR of Ontario Lacus, based on a joint analysis of ISS, VIMS and RADAR SAR datasets, along with the T49

Brest, Université de

224

Radiocarbon on Titan RALPH D. LORENZ1*, A. J. TIMOTHY JULL2, TIMOTHY D. SWINDLE1 AND JONATHAN I. LUNINE1  

E-Print Network [OSTI]

's atmosphere is thick enough that cosmic-ray flux limits the production of 14C: absence of a strong magnetic will be measured by the Huygens probe. Measurements with simple detectors on future missions could place useful as a measure of age. Titan, to be the object of close scrutiny of the NASA­ESA Cassini­Huygens mission

Lorenz, Ralph D.

225

Synthesis and Characterization of Single-Crystalline Alkali Titanate Cheng-Yan Xu,, Qi Zhang, Han Zhang,| Liang Zhen, Jie Tang,, and Lu-Chang Qin*,,|  

E-Print Network [OSTI]

a challenge, except for the template method. Recently, sodium titanate nanowires were produced by hydrothermal13 and K2Ti8O17 nanowires have also been successfully prepared by a hydrothermal reaction between Ti. The processing parameters are almost the same, except that the reaction temperature was set at 800 °C, as has

Qin, Lu-Chang

226

[alpha]-Decay damage effects in curium-doped titanate ceramic containing sodium-free high-level nuclear waste  

SciTech Connect (OSTI)

A polyphase titanate ceramic incorporating sodium-free simulated high-level nuclear waste was doped with 0.91 wt% of [sup 224]Cm to accelerate the effects of long-term self-irradiation arising from [alpha] decays. The ceramic included three main constituent minerals: hollandite, perovskite, and zirconolite, with some minor phases. Although hollandite showed the broadening of its X-ray diffraction lines and small lattice parameter changes during damage in growth, the unit cell was substantially unaltered. Perovskite and zirconolite, which are the primary hosts of curium, showed 2.7% and 2.6% expansions, respectively, of their unit cell volumes after a dose of 12 [times] 10[sup 17] [alpha] decays[center dot]g[sup [minus]1]. Volume swelling due to damage in growth caused an exponential (almost linear) decrease in density, which reached 1.7% after a dose of 12.4 [times] 10[sup 17] [alpha] decays[center dot]g[sup [minus]1]. Leach tests on samples that had incurred doses of 2.0 [times] 10[sup 17] and 4.5 [times] 10[sup 17] [alpha] decays[center dot]g[sup [minus]1] showed that the rates of dissolution of cesium and barium were similar to analogous leach rates from the equivalent cold ceramic, while strontium and calcium leach rates were 2--15 times higher. Although the cerium, molybdenum, strontium, and calcium leach rates in the present material were similar to those in the curium-doped sodium-bearing titanate ceramic reported previously, the cesium leach rate was 3--8 times lower.

Mitamura, Hisayoshi; Matsumoto, Seiichiro; Tsuboi, Takashi; Hashimoto, Masaaki; Togashi, Yoshihiro; Kanazawa, Hiroyuki (Japan Atomic Energy Research Inst., Ibaraki (Japan)); Stewart, M.W.A.; Vance, E.R.; Hart, K.P.; Ball, C.J. (Australian Nuclear Science and Technology Organization, Lucas Heights, New South Wales (Australia). Lucas Heights Research Labs.); White, T.J.

1994-09-01T23:59:59.000Z

227

Diagnosis of Lower Hybrid on MST  

SciTech Connect (OSTI)

RF driven current has never been demonstrated in a Reversed Field Pinch. Recently the lower hybrid system on the Madison Symmetric Torus reached a new operating regime. This upgrade allows RF powers of up to 5% of the Ohmic input power to be injected. It is therefore anticipated that the lower hybrid system is on the threshold of producing meaningful changes to the RFP equilibrium. A diagnostic set is under development to facilitate the study of such changes and lay the foundation for near megawatt operations. Many measurements are being studied for viability. These include electron cyclotron emission, examinations of bulk ion and electron heating, surface perturbation pickup coils, magnetic probe measurements, and Langmuir probe measurements. In addition, several x-ray diagnostics are in operation: pulse height analysis is performed on detector arrays to determine the 5-200 keV spectrum. An insertable target probe is available to create x-rays from fast electrons. Tomographic inversion of 2-D Soft x-ray detectors yields equilibrium information through island structure. Results from experiments with source power up to 225 kW will be presented. Preliminary results from CQL3D Fokker-Planck simulations will also be presented.

Burke, D. R.; Goetz, J. A.; Kaufman, M. C.; Almagri, A. F.; Anderson, J. K.; Forest, C. B.; Prager, S. C. [University of Wisconsin--Madison, Madison WI 53706 (United States)

2007-09-28T23:59:59.000Z

228

LANL: Mechanical testing and modeling in MST  

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

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229

Physics Topics - MST - UW Plasma Physics  

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

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230

Research Mission - MST - UW Plasma Physics  

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

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231

Los Alamos Lab: MST: Focus on Facilities  

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

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232

Los Alamos Lab: MST: Materials Research Highlights  

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

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233

Graduate Student Information - MST - UW Plasma Physics  

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

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234

Electron Bernstein Wave Studies in MST  

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

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235

Programmable Power Supply for MST'S Poloidal  

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

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236

VIMS images of the Huygens landing site on Titan: S. Rodriguez et al. Cassini/VIMS hyperspectral observations of the HUYGENS  

E-Print Network [OSTI]

VIMS images of the Huygens landing site on Titan: S. Rodriguez et al. 1 Cassini/VIMS hyperspectral.N. Clark2 , B. Buratti3 , R.H. Brown4 , T.B. McCord5 , P.D. Nicholson6 , K.H. Baines3 and the VIMS science Number of Table(s): 1 Number of figure(s): 11 Running Head: VIMS images of the Huygens probe landing site

Paris-Sud XI, Université de

237

IMPACT OF SMALL COLUMN ION EXCHANGE STREAMS ON DWPF GLASS FORMULATION MELT RATE STUDIES  

SciTech Connect (OSTI)

This study was undertaken to evaluate the potential impacts of the Small Column Ion Exchange (SCIX) streams - particularly the addition of Monosodium Titanate (MST) and Crystalline Silicotitanate (CST) - on the melt rate of simulated feed for the Defense Waste Processing Facility (DWPF). Additional MST was added to account for contributions from the Salt Waste Processing Facility (SWPF). The Savannah River National Laboratory (SRNL) Melt Rate Furnace (MRF) was used to evaluate four melter feed compositions: two with simulated SCIX and SWPF material and two without. The Slurry-fed Melt Rate Furnace (SMRF) was then used to compare two different feeds: one with and one without bounding concentrations of simulated SCIX and SWPF material. Analyses of the melter feed materials confirmed that they met their targeted compositions. Four feeds were tested in triplicate in the MRF. The linear melt rates were determined by using X-ray computed tomography to measure the height of the glass formed along the bottom of the beakers. The addition of the SCIX and SWPF material reduced the average measured melt rate by about 10% in MRF testing, although there was significant scatter in the data. Two feeds were tested in the SMRF. It was noted that the ground CST alone (ground CST with liquid in a bucket) was extremely difficult to resuspend during preparation of the feed with material from SCIX and SWPF. This feed was also more difficult to pump than the material without MST and CST due to settling occurring in the melter feed line, although the yield stress of both feeds was high relative to the DWPF design basis. Steady state feeding conditions were maintained for about five hours for each feed. There was a reduction in the feed and pour rates of approximately 15% when CST and MST were added to the feed, although there was significant scatter in the data. Analysis of samples collected from the SMRF pour stream showed that the composition of the glass changed as expected when MST and CST were added to the feed. These reductions in melt rate are consistent with previous studies that showed a negative impact of increased TiO{sub 2} concentrations on the rate of melting. The impact of agitating the melt pool via bubbling was not studied as part of this work, but may be of interest for further testing. It is recommended that additional melt rate testing be performed should a potential reduction in melt rate of 10-15% be considered an issue of concern, or should the anticipated composition of the glass with the addition of material from salt waste processing be modified significantly from the current projections, either due to changes in sludge batch preparation or changes in the composition or volume of SCIX and SWPF material.

Fox, K.; Miller, D.; Koopman, D.

2011-04-26T23:59:59.000Z

238

On the State of Water Ice on Saturn's Moon Titan and Implications to Icy Bodies in the Outer Solar System  

E-Print Network [OSTI]

The crystalline state of water ice in the Solar System depends on the temperature history of the ice and the influence of energetic particles to which it has been exposed. We measured the infrared absorption spectra of amorphous and crystalline water ice in the 10-50 K and 10-140 K temperature range, respectively, and conducted a systematic experimental study to investigate the amorphization of crystalline water ice via ionizing radiation irradiation at doses of up to 160 \\pm 30 eV per molecule. We found that crystalline water ice can be converted only partially to amorphous ice by electron irradiation. The experiments showed that a fraction of the 1.65 \\mum band, which is characteristic for crystalline water ice, survived the irradiation, to a degree that strongly depends on the temperature. Quantitative kinetic fits of the temporal evolution of the 1.65 \\mum band clearly demonstrate that there is a balance between thermal recrystallization and irradiation-induced amorphization, with thermal recrystallizaton dominant at higher temperatures. Our experiments show the amorphization at 40K was incomplete, in contradiction to Mastrapa and Brown's conclusion (Icarus 2006, 183, 207.). At 50 K, the recrystallization due to thermal effects is strong, and most of the crystalline ice survived. Temperatures of most icy objects in the Solar System, including Jovian satellites, Saturnian satellites (including Titan), and Kuiper Belt Objects, are equal to or above 50 K; this explains why water ice detected on those objects is mostly crystalline.

Weijun Zheng; David Jewitt; Ralf I. Kaiser

2008-01-18T23:59:59.000Z

239

Real-time radiography of Titan IV Solid Rocket Motor Upgrade (SRMU) static firing test QM-2  

SciTech Connect (OSTI)

Real-time radiography was successfully applied to the Titan-IV Solid Rocket Motor Upgrade (SRMU) static firing test QM-2 conducted February 22, 1993 at Phillips Laboratory, Edwards AFB, CA. The real-time video data obtained in this test gave the first incontrovertible evidence that the molten slag pool is low (less than 5 to 6 inches in depth referenced to the bottom of the aft dome cavity) before T + 55 seconds, builds fairly linearly from this point in time reaching a quasi-equilibrium depth of 16 to 17 inches at about T + 97 seconds, which is well below the top of the vectored nozzle, and maintains that level until T + 125 near the end motor burn. From T + 125 seconds to motor burn-out at T + 140 seconds the slag pool builds to a maximum depth of about 20 to 21 inches, still well below the top of the nozzle. The molten slag pool was observed to interact with motions of the vectored nozzle, and exhibit slosh and wave mode oscillations. A few slag ejection events were also observed.

Dolan, K.W.; Curnow, G.M.; Perkins, D.E.; Schneberk, D.J.; Costerus, B.W.; La Chapell, M.J.; Turner, D.E.; Wallace, P.W.

1994-03-08T23:59:59.000Z

240

High temperature dielectric relaxation anomaly of Y{sup 3+} and Mn{sup 2+} doped barium strontium titanate ceramics  

SciTech Connect (OSTI)

Relaxation like dielectric anomaly is observed in Y{sup 3+} and Mn{sup 2+} doped barium strontium titanate ceramics when the temperature is over 450?K. Apart from the conventional dielectric relaxation analysis method with Debye or modified Debye equations, which is hard to give exact temperature dependence of the relaxation process, dielectric response in the form of complex impedance, assisted with Cole-Cole impedance model corrected equivalent circuits, is adopted to solve this problem and chase the polarization mechanism in this paper. Through this method, an excellent description to temperature dependence of the dielectric relaxation anomaly and its dominated factors are achieved. Further analysis reveals that the exponential decay of the Cole distribution parameter n with temperature is confirmed to be induced by the microscopic lattice distortion due to ions doping and the interaction between the defects. At last, a clear sight to polarization mechanism containing both the intrinsic dipolar polarization and extrinsic distributed oxygen vacancies hopping response under different temperature is obtained.

Yan, Shiguang; Mao, Chaoliang, E-mail: maochaoliang@mail.sic.ac.cn, E-mail: xldong@mail.sic.ac.cn; Wang, Genshui; Yao, Chunhua; Cao, Fei; Dong, Xianlin, E-mail: maochaoliang@mail.sic.ac.cn, E-mail: xldong@mail.sic.ac.cn [Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050 (China)

2014-10-14T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Small Column Ion Exchange Design and Safety Strategy  

SciTech Connect (OSTI)

Small Column Ion Exchange (SCIX) is a transformational technology originally developed by the Department of Energy (DOE) Environmental Management (EM-30) office and is now being deployed at the Savannah River Site (SRS) to significantly increase overall salt processing capacity and accelerate the Liquid Waste System life-cycle. The process combines strontium and actinide removal using Monosodium Titanate (MST), Rotary Microfiltration, and cesium removal using Crystalline Silicotitanate (CST, specifically UOP IONSIV{reg_sign}IE-911 ion exchanger) to create a low level waste stream to be disposed in grout and a high level waste stream to be vitrified. The process also includes preparation of the streams for disposal, e.g., grinding of the loaded CST material. These waste processing components are technically mature and flowsheet integration studies are being performed including glass formulations studies, application specific thermal modeling, and mixing studies. The deployment program includes design and fabrication of the Rotary Microfilter (RMF) assembly, ion-exchange columns (IXCs), and grinder module, utilizing an integrated system safety design approach. The design concept is to install the process inside an existing waste tank, Tank 41H. The process consists of a feed pump with a set of four RMFs, two IXCs, a media grinder, three Submersible Mixer Pumps (SMPs), and all supporting infrastructure including media receipt and preparation facilities. The design addresses MST mixing to achieve the required strontium and actinide removal and to prevent future retrieval problems. CST achieves very high cesium loadings (up to 1,100 curies per gallon (Ci/gal) bed volume). The design addresses the hazards associated with this material including heat management (in column and in-tank), as detailed in the thermal modeling. The CST must be size reduced for compatibility with downstream processes. The design addresses material transport into and out of the grinder and includes provisions for equipment maintenance including remote handling. The design includes a robust set of nuclear safety controls compliant with DOE Standard (STD)-1189, Integration of Safety into the Design Process. The controls cover explosions, spills, boiling, aerosolization, and criticality. Natural Phenomena Hazards (NPH) including seismic event, tornado/high wind, and wildland fire are considered. In addition, the SCIX process equipment was evaluated for impact to existing facility safety equipment including the waste tank itself. SCIX is an innovative program which leverages DOE's technology development capabilities to provide a basis for a successful field deployment.

Huff, T.; Rios-Armstrong, M.; Edwards, R.; Herman, D.

2011-02-07T23:59:59.000Z

242

Structural, microstructural and thermal properties of lead-free bismuthsodiumbariumtitanate piezoceramics synthesized by mechanical alloying  

SciTech Connect (OSTI)

Graphical abstract: Mechano-synthesis of lead-free (Bi{sub 0.5}Na{sub 0.5}){sub 0.94}Ba{sub 0.06}TiO{sub 3} piezoceramics with nanocrystalline/amorphous structure and homogeneous composition: partial transformation of constituents to BNBT, BNT and pyrochlore, amorphous phase formation, mechano-crystallization of the amorphous, pyrochlore-to-perovskite BNBT phase transformation during the process. Display Omitted Highlights: ? Perovskite BNBT powders with homogeneous composition were synthesized by MA. ? Partial transformation of constituents to BNBT, BNT and pyrochlore occurred by MA. ? Formation of an amorphous phase and afterwards its crystallization occurred by MA. ? Pyrochlore-to-perovskite BNBT phase transformation occurred after prolong milling. ? Polymorphic transformations of TiO{sub 2} act as the main alloying impediment during MA. -- Abstract: Bismuthsodiumbariumtitanate piezoceramics with a composition of (Bi{sub 0.5}Na{sub 0.5}){sub 0.94}Ba{sub 0.06}TiO{sub 3} (BNBT) were prepared by mechanical alloying (MA). Structural analysis and phase identification were performed by X-ray diffraction (XRD). Microstructural studies and chemical composition homogeneity were performed by scanning electron microscope (SEM) coupled with energy dispersive X-ray analysis (EDX). Furthermore, thermal properties of the as-milled powders were evaluated by thermogravimetry/differential thermal analysis (TG/DTA). During the initial milling, the constituents were transformed to the perovskite, pyrochlore, and BNT phases; in addition, partial amorphization of the structure appeared during the milling cycle. As MA progressed, transformation of pyrochlore-to-perovskite and crystallization of the amorphous phase occurred and also, the BNBT phase was significantly developed. It was found that the MA process has the ability to synthesize the BNBT powders with a submicron particle size, regular morphology, and uniform elemental distribution.

Amini, Rasool, E-mail: amini@sutech.ac.ir [Department of Materials Science and Engineering, Shiraz University of Technology, 71557-13876 Shiraz (Iran, Islamic Republic of)] [Department of Materials Science and Engineering, Shiraz University of Technology, 71557-13876 Shiraz (Iran, Islamic Republic of); Ghazanfari, Mohammad Reza; Alizadeh, Morteza; Ardakani, Hamed Ahmadi [Department of Materials Science and Engineering, Shiraz University of Technology, 71557-13876 Shiraz (Iran, Islamic Republic of)] [Department of Materials Science and Engineering, Shiraz University of Technology, 71557-13876 Shiraz (Iran, Islamic Republic of); Ghaffari, Mohammad [Department of Electrical and Electronics Engineering, UNAMNational Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800 (Turkey)] [Department of Electrical and Electronics Engineering, UNAMNational Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800 (Turkey)

2013-02-15T23:59:59.000Z

243

THE IMPLANTATION AND INTERACTIONS OF O{sup +} IN TITAN'S ATMOSPHERE: LABORATORY MEASUREMENTS OF COLLISION-INDUCED DISSOCIATION OF N{sub 2} AND MODELING OF POSITIVE ION FORMATION  

SciTech Connect (OSTI)

Energetic oxygen ions are an important component of the plasma incident onto Titan's atmosphere. Therefore, we report measurements of electron capture and ionization collisions of N{sub 2} with incident O{sup +} over the energy range 10-100 keV. Using time of flight coincidence counting techniques we also measured the collision-induced dissociation of N{sub 2} following ionization and electron capture. The electron capture and ionization cross sections were found to have comparable magnitudes. Capture collisions are dominated by non-dissociative processes with the dissociative processes providing contributions that are only slightly smaller. In contrast, ionization is entirely dominated by the dissociative processes. The energy distributions of the N{sup +} and N atom fragments ejected by 20, 50, and 100 keV incident O{sup +} projectiles have also been determined. These fragments carry considerable amounts of energy and if produce in the exobase region can readily escape. The cross sections measured here have been used with Cassini energetic ion and atmospheric density data to determine the ionization by and neutralization of energetic O{sup +} penetrating Titan's N{sub 2} rich atmosphere. Neutralization by charge exchange is found not to occur efficiently above Titan's exobase, so energetic particles with large gyroradii penetrate the atmosphere primarily as ions. When the energetic O{sup +} flux is large, we also show it is an important source of ionization and heating at depth into Titan's atmosphere and the fragments contribute to the net atmospheric loss rate.

Shah, M. B.; Latimer, C. J. [Department of Pure and Applied Physics, Queen's University Belfast, Belfast (United Kingdom); Montenegro, E. C. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro 21945-970, RJ (Brazil); Tucker, O. J.; Johnson, R. E. [Engineering Physics and Astronomy, University of Virginia, Thornton Hall B102, Charlottesville, VA 22904 (United States); Smith, H. T. [Johns Hopkins Applied Physics Laboratory, Laurel, MD 20723 (United States)

2009-10-01T23:59:59.000Z

244

Epitaxial strontium titanate films grown by atomic layer deposition on SrTiO{sub 3}-buffered Si(001) substrates  

SciTech Connect (OSTI)

Epitaxial strontium titanate (STO) films have been grown by atomic layer deposition (ALD) on Si(001) substrates with a thin STO buffer layer grown by molecular beam epitaxy (MBE). Four unit cells of STO grown by MBE serve as the surface template for ALD growth. The STO films grown by ALD are crystalline as-deposited with minimal, if any, amorphous SiO{sub x} layer at the STO-Si interface. The growth of STO was achieved using bis(triisopropylcyclopentadienyl)-strontium, titanium tetraisopropoxide, and water as the coreactants at a substrate temperature of 250 Degree-Sign C. In situ x-ray photoelectron spectroscopy (XPS) analysis revealed that the ALD process did not induce additional Si-O bonding at the STO-Si interface. Postdeposition XPS analysis also revealed sporadic carbon incorporation in the as-deposited films. However, annealing at a temperature of 250 Degree-Sign C for 30 min in moderate to high vacuum (10{sup -6}-10{sup -9} Torr) removed the carbon species. Higher annealing temperatures (>275 Degree-Sign C) gave rise to a small increase in Si-O bonding, as indicated by XPS, but no reduced Ti species were observed. X-ray diffraction revealed that the as-deposited STO films were c-axis oriented and fully crystalline. A rocking curve around the STO(002) reflection gave a full width at half maximum of 0.30 Degree-Sign {+-} 0.06 Degree-Sign for film thicknesses ranging from 5 to 25 nm. Cross-sectional transmission electron microscopy revealed that the STO films were continuous with conformal growth to the substrate and smooth interfaces between the ALD- and MBE-grown STO. Overall, the results indicate that thick, crystalline STO can be grown on Si(001) substrates by ALD with minimal formation of an amorphous SiO{sub x} layer using a four-unit-cell STO buffer layer grown by MBE to serve as the surface template.

McDaniel, Martin D.; Posadas, Agham; Ngo, Thong Q.; Dhamdhere, Ajit; Smith, David J.; Demkov, Alexander A.; Ekerdt, John G. [Department of Chemical Engineering, University of Texas at Austin, 1 University Station C0400, Austin, Texas 78712 (United States); Department of Physics, University of Texas at Austin, 1 University Station C1600, Austin, Texas 78712 (United States); Department of Chemical Engineering, University of Texas at Austin, 1 University Station C0400, Austin, Texas 78712 (United States); Department of Physics, Arizona State University, Tempe, Arizona 85287-1504 (United States); Department of Physics, University of Texas at Austin, 1 University Station C1600, Austin, Texas 78712 (United States); Department of Chemical Engineering, University of Texas at Austin, 1 University Station C0400, Austin, Texas 78712 (United States)

2013-01-15T23:59:59.000Z

245

Low leakage Ru-strontium titanate-Ru metal-insulator-metal capacitors for sub-20?nm technology node in dynamic random access memory  

SciTech Connect (OSTI)

Improved metal-insulator-metal capacitor (MIMCAP) stacks with strontium titanate (STO) as dielectric sandwiched between Ru as top and bottom electrode are shown. The Ru/STO/Ru stack demonstrates clearly its potential to reach sub-20?nm technology nodes for dynamic random access memory. Downscaling of the equivalent oxide thickness, leakage current density (J{sub g}) of the MIMCAPs, and physical thickness of the STO have been realized by control of the Sr/Ti ratio and grain size using a heterogeneous TiO{sub 2}/STO based nanolaminate stack deposition and a two-step crystallization anneal. Replacement of TiN with Ru as both top and bottom electrodes reduces the amount of electrically active defects and is essential to achieve a low leakage current in the MIM capacitor.

Popovici, M., E-mail: Mihaela.Ioana.Popovici@imec.be; Swerts, J.; Redolfi, A.; Kaczer, B.; Aoulaiche, M.; Radu, I.; Clima, S.; Everaert, J.-L.; Van Elshocht, S.; Jurczak, M. [Imec, Leuven 3001 (Belgium)

2014-02-24T23:59:59.000Z

246

CHARACTERIZATION REPORT FOR STRONTIUM TITANATE IN SWSA 7 AND ADJACENT PARCELS IN SUPPORT OF THE NATIONAL PRIORITIES LIST SITE BOUNDARY DEFINITION PROGRAM OAK RIDGE, TENNESSEE  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Oak Ridge Office requested support from the Oak Ridge Institute for Science and Education (ORISE) contract to delineate the extent of strontium titanate (SrTiO3) contamination in and around Solid Waste Storage Area (SWSA) 7 as part of the Oak Ridge National Priorities List Site boundary definition program. The study area is presented in Fig. 1.1 relative to the Oak Ridge Reservation (ORR). The investigation was executed according to Sampling and Analysis Plan/Quality Assurance Project Plan (SAP/QAPP) (DOE 2011) to supplement previous investigations noted below and to determine what areas, if any, have been adversely impacted by site operations.

David A. King

2011-10-10T23:59:59.000Z

247

ORNL debuts Titan supercomputer  

E-Print Network [OSTI]

Jaguar predecessor while using only marginally more electricity. "One challenge in supercomputers today is power consumption," said Jeff Nichols, associate laboratory director for computing and computational . . . . . . . . . .7 Historic holiday chow down. . . . . . . . . . . . . .8 #12;Working at ORNL in some capacity

Pennycook, Steve

248

DISSOCIATIVE RECOMBINATION OF PROTONATED PROPIONITRILE, CH{sub 3}CH{sub 2}CNH{sup +}: IMPLICATIONS FOR TITAN'S UPPER ATMOSPHERE  

SciTech Connect (OSTI)

The dissociative recombination of protonated propionitrile, CH{sub 3}CH{sub 2}CNH{sup +}, has been investigated at the heavy ion storage ring, CRYRING, at the Manne Siegbahn Laboratory, Stockholm University, Sweden. The thermal rate coefficient has been deduced to follow k(T) = (1.5 {+-} 0.2) x 10{sup -6} (T/300){sup -0.76{+-}0.02} cm{sup 3} s{sup -1} for electron temperatures ranging from {approx}10 to {approx}1000 K. Measurements of the branching fractions were performed at {approx}0 eV relative kinetic energy. It has been found that in 43% {+-} 2% of the reactions the four heavy atoms remain in the same product fragment. An equal portion of the reactions leads to products where one of the heavy atoms is split off from the other three and 14% {+-} 1% result in a breakup into two heavy fragments containing two heavy atoms each. We discuss the significance of the data to Titan's upper atmosphere.

Vigren, E.; Hamberg, M.; Thomas, R. D.; Kashperka, I.; Af Ugglas, M.; Larsson, M.; Geppert, W. D. [Department of Physics, AlbaNova, Stockholm University, SE-10691 Stockholm (Sweden); Zhaunerchyk, V. [Institute for Molecules and Materials, Radboud University Nijmegen, P.O. Box 9010, NL-6500 GL Nijmegen (Netherlands); Kaminska, M.; Semaniak, J. [Institute of Physics, Jan Kochanowski University, Swietokrzyska 15, PL-25406 Kielce (Poland); Trippel, S.; Wester, R. [Physikalisches Institut, Universitaet Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg (Germany); Zhang, M., E-mail: erivig@fysik.su.s [Institute of Modern Physics, Chinese Academy of Sciences, 509 Nanchang Road, Lanzhou 730000 (China)

2010-10-10T23:59:59.000Z

249

Development of a straightness measurement and compensation system with multiple right-angle reflectors and a lead zirconate titanate-based compensation stage  

SciTech Connect (OSTI)

This paper presents a real-time straightness measurement and compensation system with an optical straightness measurement system and a single-axis flexure-hinge type lead zirconate titanate (PZT)-based compensation stage. The optical straightness measurement system consists of a He-Ne laser, a quadrant photodiode detector, and five right-angle reflectors. Multiple laser beam reflections between the right-angle reflectors increase the sensitivity of the straightness measurement by a factor of 6. The right-angle reflectors can be moved by the flexure-hinge type PZT-based compensation stage that is actuated by a PZT actuator to ensure that the laser beam is always projected onto the center of the quadrant detector. These two systems are integrated and fixed on a scanning stage. The resolution of the straightness measurement system is 0.1 {mu}m. Using the real-time straightness compensation system, the straightness error of the scanning stage is fed back to the control system. The compensated straightness error of the scanning stage system was reduced from 6.5 {mu}m to less than 1 {mu}m.

Liu, Chien-Hung; Chen, Jui-Hung [Institute of Electro-Optical and Materials Science, National Formosa University, Huwei, Yunlin 632, Taiwan (China); Teng, Yun-Feng [Department of Mechanical Engineering, National Chung-Cheng University, Chiayi 621, Taiwan (China)

2009-11-15T23:59:59.000Z

250

Radio frequency wave experiments on the MST reversed field pinch  

SciTech Connect (OSTI)

Experiments, simulations, and theory all indicate that the magnetic fluctuations responsible for the poor confinement in the reversed field pinch (RFP) can be controlled by altering the radial profile of the current density. The magnetic fluctuations in the RFP are due to resistive MHD instabilities caused by current profile peaking; thus confinement in the RFP is ultimately the result of a misalignment between inductively driven current profiles and the stable current profiles characteristic of the Taylor state. If a technique such as rf current drive can be developed to non-inductively sustain a Taylor state (a current profile linearly stable to all tearing modes), the confinement of the RFP and its potential as a reactor concept are likely to increase. Whether there is a self-consistent path from poor confinement to greatly improved confinement through current profile modification is an issue for future experiments to address if and only if near term experiments can demonstrate: (1) coupling to and the propagation of rf waves in RFP plasmas, (2) efficient current drive, and (3) control of the power deposition which will make it possible to control the current profile. In this paper, modeling results and experimental plans are presented for two rf experiments which have the potential of satisfying these three goals: high-n{sub {parallel}} lower hybrid (LH) waves and electron Bernstein waves (EBWs).

Forest, C.B.; Chattopadhyay, P.K.; Nornberg, M.D.; Prager, S.C.; Thomas, M.A. [Univ. of Wisconsin, Madison, WI (United States). Physics Dept.; Uchimoto, E. [Univ. of Montana, Missoula, MT (United States). Dept. of Physics and Astronomy; Smirnov, A.P. [Moscow State Univ. (Russian Federation); Harvey, R.W. [CompX, Del Mar, CA (United States); Ram, A.K. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Plasma Fusion Center

1999-04-01T23:59:59.000Z

251

Topics: Determining the Beta Limit - MST - UW Plasma Physics  

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252

LANL: Facility Focus, MST-6 Materials Surface Science Investigations Laboratory  

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253

Port hole perturbations to the magnetic field in MST  

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254

Overview of results from the MST reversed field pinch experiment  

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255

Los Alamos: MST-MTM: EML: Electron Microscopy Laboratory  

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256

Los Alamos: MST-MTM: EML: Electron Microscopy Laboratory  

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257

Microsoft Word - eMST report - for signature.docx  

Office of Scientific and Technical Information (OSTI)

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258

Control and Auxiliary Systems - MST - UW Plasma Physics  

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259

Los Alamos: MST-MTM: EML: Electron Microscopy Laboratory  

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260

About Materials Science Technology:MST: Los Alamos National Laboratory  

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Note: This page contains sample records for the topic "monosodium titanate mst" from the National Library of EnergyBeta (NLEBeta).
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261

On the crystal energy and structure of A{sub 2}Ti{sub n}O{sub 2n+1} (A=Li, Na, K) titanates by DFT calculations and neutron diffraction  

SciTech Connect (OSTI)

First-principles quantum-mechanical calculations (CRYSTAL09 code, B3LYP functional) were performed on alkali titanates A{sub 2}Ti{sub n}O{sub 2n+1} with layered structure (n=3,4,6). Monoclinic structural types with unshifted (P2{sub 1}/m) and with shifted (C2/m) layers were considered. Crystal energies and full structural details were obtained for all Li, Na, and K phases. Neutron diffraction data were collected on powder samples of P2{sub 1}/m-Li{sub 2}Ti{sub 3}O{sub 7} (a=9.3146(3), b=3.7522(1), c=7.5447(3) , ?=97.611(4)) and C2/m-K{sub 2}Ti{sub 4}O{sub 9} (a=18.2578(8), b=3.79160(9), c=12.0242(4) , ?=106.459(4)) and their structures were Rietveld-refined. Computed energies show the P2{sub 1}/m arrangement as favoured over the C2/m one for n=3, and the opposite holds for n=6. In the n=4 case the P2{sub 1}/m configuration is predicted to be more stable for Li and Na, and the C2/m one for K titanates. Analysis of LiO and KO crystal-chemical environments from experiment and theory shows that the alkali atom bonding is stabilized/destabilized in the different phases consistently with the energy trend. - Graphical abstract: Display Omitted - Highlights: The P2{sub 1}/m structure-type is found to be more stable for A{sub 2}Ti{sub 3}O{sub 7} layer titanates. The C2/m structure-type is found to be more stable for A{sub 2}Ti{sub 6}O{sub 13} layer titanates. Tetratitanates are predicted to prefer the P2{sub 1}/m (Li and Na) or C2/m (K) structure. LiO and KO bond distances follow a trend consistent with computed phase energies.

Catti, Michele, E-mail: catti@mater.unimib.it [Dipartimento di Scienza dei Materiali, Universit di Milano Bicocca, Via Cozzi 53, 20125 Milano (Italy); Pinus, Ilya [Dipartimento di Scienza dei Materiali, Universit di Milano Bicocca, Via Cozzi 53, 20125 Milano (Italy); Scherillo, Antonella [ISIS Facility, CCLRC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX (United Kingdom)

2013-09-15T23:59:59.000Z

262

Optical amplification in disordered electrooptic Tm{sup 3+} and Ho{sup 3+} codoped lanthanum-modified lead zirconate titanate ceramics and study of spectroscopy and communication between cations  

SciTech Connect (OSTI)

Rare earth doped electro-optic (EO) ceramics of lanthanum-modified lead zirconate titanate (PLZT) are promising in building multifunctional optical devices, by taking advantage of both EO effect and optical activity. In this work, the combination of the measured spectra of absorption and photoluminescence, the fluorescent decay, the calculated Judd-Ofelt parameters, and measured single pass gain in Tm{sup 3+}, Ho{sup 3+} codoped PLZT ceramics have marked them out as promising gain media in building electrically controllable lasers/optical amplifiers and other multifunctional devices. Optical energy storage was also observed in the optical amplification dynamics.

Zhao, Hua; Zhang, Kun; Xu, Long; Sun, Fankui; Zhang, Jingwen, E-mail: jingwenz@gmail.com [Department of Physics, Harbin Institute of Technology, Harbin 150001 (China); Chen, Xuesheng [Department of Physics and Astronomy, Wheaton College, Norton Massachusetts 02766 (United States); Li, Kewen K. [Boston Applied Technologies, Inc., Woburn, Massachusetts 01801 (United States)

2014-02-21T23:59:59.000Z

263

ANALYSES OF HTF-48-12-20/24 (FEBRUARY, 2012) AND ARCHIVED HTF-E-05-021 TANK 48H SLURRY SAMPLES  

SciTech Connect (OSTI)

Personnel characterized a Savannah River National Laboratory (SRNL) archived sample of Tank 48H slurry (HTF-E-05-021) in addition to the composite of samples HTF-48-12-20 and HTF-48-12-24, which were both retrieved in February 2012. The combined February 2012 sample is referred to as HTF-48-12-20/24 in this report. The results from these analyses are compared with Tank 48H samples analyzed in 2003, 2004, and 2005. This work supports the effort to demonstrate copper-catalyzed peroxide oxidation (CCPO) of organic content in this material. The principal findings with respect to the chemical and physical characteristics of the most recent sample are: (1) The measured potassium tetraphenylborate (KTPB) solid concentration is 1.76 wt %; (2) Titanium was in line with 2004 and 2005 slurry measurements at 897 mg/L, it represents 0.1535 {+-} 0.0012 wt % monosodium titanate (MST); (3) The measured insoluble solids content was 1.467 wt %; (4) The free hydroxide concentration in the Tank 48H filtrate sample (1.02 {+-} 0.02 M) is close to the Tank 48H limit (1.0 M); (5) Carbonate reported by total inorganic carbon (TIC, 1.39 {+-} 0.03 M) is more than double the concentrations measured in past (2003-2005) samples; (6) The soluble potassium content (measured at 286 {+-} 23 mg/L) in the filtrate is in line with all past measurements; and (7) The measured {sup 137}Cs concentration is 7.81E + 08 {+-} 3.9E + 07 dpm/mL of slurry (1.33 {+-} 5% Ci/gallon or 3.18E + 05 {+-} 5% curies of {sup 137}Cs in the tank) in the slurry which is in agreement with the 2005 report of 3.14E + 05 {+-} 1.5% curies of {sup 137}Cs in the tank. The filtrate {sup 137}Cs concentration is 2.57E + 07 {+-} 2.6E + 05 dpm/mL. This result is consistent with previous results. Significant analytical data are summarized in Table 1.

Nash, C.; Peters, T.

2012-08-02T23:59:59.000Z

264

JET MIXING ANALYSIS FOR SRS HIGH-LEVEL WASTE RECOVERY  

SciTech Connect (OSTI)

The process of recovering the waste in storage tanks at the Savannah River Site (SRS) typically requires mixing the contents of the tank to ensure uniformity of the discharge stream. Mixing is accomplished with one to four slurry pumps located within the tank liquid. The slurry pump may be fixed in position or they may rotate depending on the specific mixing requirements. The high-level waste in Tank 48 contains insoluble solids in the form of potassium tetraphenyl borate compounds (KTPB), monosodium titanate (MST), and sludge. Tank 48 is equipped with 4 slurry pumps, which are intended to suspend the insoluble solids prior to transfer of the waste to the Fluidized Bed Steam Reformer (FBSR) process. The FBSR process is being designed for a normal feed of 3.05 wt% insoluble solids. A chemical characterization study has shown the insoluble solids concentration is approximately 3.05 wt% when well-mixed. The project is requesting a Computational Fluid Dynamics (CFD) mixing study from SRNL to determine the solids behavior with 2, 3, and 4 slurry pumps in operation and an estimate of the insoluble solids concentration at the suction of the transfer pump to the FBSR process. The impact of cooling coils is not considered in the current work. The work consists of two principal objectives by taking a CFD approach: (1) To estimate insoluble solids concentration transferred from Tank 48 to the Waste Feed Tank in the FBSR process and (2) To assess the impact of different combinations of four slurry pumps on insoluble solids suspension and mixing in Tank 48. For this work, several different combinations of a maximum of four pumps are considered to determine the resulting flow patterns and local flow velocities which are thought to be associated with sludge particle mixing. Two different elevations of pump nozzles are used for an assessment of the flow patterns on the tank mixing. Pump design and operating parameters used for the analysis are summarized in Table 1. The baseline pump orientations are chosen by the previous work [Lee et. al, 2008] and the initial engineering judgement for the conservative flow estimate since the modeling results for the other pump orientations are compared with the baseline results. As shown in Table 1, the present study assumes that each slurry pump has 900 gpm flowrate for the tank mixing analysis, although the Standard Operating Procedure for Tank 48 currently limits the actual pump speed and flowrate to a value less than 900 gpm for a 29 inch liquid level. Table 2 shows material properties and weight distributions for the solids to be modeled for the mixing analysis in Tank 48.

Lee, S.

2011-07-05T23:59:59.000Z

265

Impact of composition and crystallization behavior of atomic layer deposited strontium titanate films on the resistive switching of Pt/STO/TiN devices  

SciTech Connect (OSTI)

The resistive switching (RS) properties of strontium titanate (Sr{sub 1+x}Ti{sub 1+y}O{sub 3+(x+2y)}, STO) based metal-oxide-metal structures prepared from industrial compatible processes have been investigated focusing on the effects of composition, microstructure, and device size. Metastable perovskite STO films were prepared on Pt-coated Si substrates utilizing plasma-assisted atomic layer deposition (ALD) from cyclopentadienyl-based metal precursors and oxygen plasma at 350?C, and a subsequent annealing at 600?C in nitrogen. Films of 15?nm and 12?nm thickness with three different compositions [Sr]/([Sr]?+?[Ti]) of 0.57 (Sr-rich STO), 0.50 (stoichiometric STO), and 0.46 (Ti-rich STO) were integrated into Pt/STO/TiN crossbar structures with sizes ranging from 100??m{sup 2} to 0.01??m{sup 2}. Nano-structural characterizations revealed a clear effect of the composition of the as-deposited STO films on their crystallization behavior and thus on the final microstructures. Local current maps obtained by local-conductivity atomic force microscopy were in good agreement with local changes of the films' microstructures. Correspondingly, also the initial leakage currents of the Pt/STO/TiN devices were affected by the STO compositions and by the films' microstructures. An electroforming process set the Pt/STO/TiN devices into the ON-state, while the forming voltage decreased with increasing initial leakage current. After a RESET process under opposite voltage has been performed, the Pt/STO/TiN devices showed a stable bipolar RS behavior with non-linear current-voltage characteristics for the high (HRS) and the low (LRS) resistance states. The obtained switching polarity and nearly area independent LRS values agree with a filamentary character of the RS behavior according to the valence change mechanism. The devices of 0.01??m{sup 2} size with a 12?nm polycrystalline stoichiometric STO film were switched at a current compliance of 50??A with voltages of about 1.0?V between resistance states of about 40?k? (LRS) and 1 M? (HRS). After identification of the influences of the films' microstructures, i.e., grain boundaries and small cracks, the remaining RS properties could be ascribed to the effect of the [Sr]/([Sr]?+?[Ti]) composition of the ALD STO thin films.

Aslam, N.; Rodenbcher, C.; Szot, K.; Waser, R.; Hoffmann-Eifert, S., E-mail: su.hoffmann@fz-juelich.de [Peter-Grnberg Institute (PGI-7), Forschungszentrum Jlich and JARA-FIT, 52425 Jlich (Germany); Longo, V.; Roozeboom, F.; Kessels, W. M. M. [Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven (Netherlands)

2014-08-14T23:59:59.000Z

266

CHARACTERIZATION OF A PRECIPITATE REACTOR FEED TANK (PRFT) SAMPLE FROM THE DEFENSE WASTE PROCESSING FACILITY (DWPF)  

SciTech Connect (OSTI)

A sample of from the Defense Waste Processing Facility (DWPF) Precipitate Reactor Feed Tank (PRFT) was pulled and sent to the Savannah River National Laboratory (SRNL) in June of 2013. The PRFT in DWPF receives Actinide Removal Process (ARP)/ Monosodium Titanate (MST) material from the 512-S Facility via the 511-S Facility. This 2.2 L sample was to be used in small-scale DWPF chemical process cell testing in the Shielded Cells Facility of SRNL. A 1L sub-sample portion was characterized to determine the physical properties such as weight percent solids, density, particle size distribution and crystalline phase identification. Further chemical analysis of the PRFT filtrate and dissolved slurry included metals and anions as well as carbon and base analysis. This technical report describes the characterization and analysis of the PRFT sample from DWPF. At SRNL, the 2.2 L PRFT sample was composited from eleven separate samples received from DWPF. The visible solids were observed to be relatively quick settling which allowed for the rinsing of the original shipping vials with PRFT supernate on the same day as compositing. Most analyses were performed in triplicate except for particle size distribution (PSD), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and thermogravimetric analysis (TGA). PRFT slurry samples were dissolved using a mixed HNO3/HF acid for subsequent Inductively Coupled Plasma Atomic Emission Spectroscopy (ICPAES) and Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) analyses performed by SRNL Analytical Development (AD). Per the task request for this work, analysis of the PRFT slurry and filtrate for metals, anions, carbon and base were primarily performed to support the planned chemical process cell testing and to provide additional component concentrations in addition to the limited data available from DWPF. Analysis of the insoluble solids portion of the PRFT slurry was aimed at detailed characterization of these solids (TGA, PSD, XRD and SEM) in support of the Salt IPT chemistry team. The overall conclusions from analyses performed in this study are that the PRFT slurry consists of 0.61 Wt.% insoluble MST solids suspended in a 0.77 M [Na+] caustic solution containing various anions such as nitrate, nitrite, sulfate, carbonate and oxalate. The corresponding measured sulfur level in the PRFT slurry, a critical element for determining how much of the PRFT slurry gets blended into the SRAT, is 0.437 Wt.% TS. The PRFT slurry does not contain insoluble oxalates nor significant quantities of high activity sludge solids. The lack of sludge solids has been alluded to by the Salt IPT chemistry team in citing that the mixing pump has been removed from Tank 49H, the feed tank to ARP-MCU, thus allowing the sludge solids to settle out. ? The PRFT aqueous slurry from DWPF was found to contain 5.96 Wt.% total dried solids. Of these total dried solids, relatively low levels of insoluble solids (0.61 Wt.%) were measured. The densities of both the filtrate and slurry were 1.05 g/mL. ? Particle size distribution of the PRFT solids in filtered caustic simulant and XRD analysis of washed/dried PRFT solids indicate that the PRFT slurry contains a bimodal distribution of particles in the range of 1 and 6 ?m and that the particles contain sodium titanium oxide hydroxide Na2Ti2O4(OH)2 crystalline material as determined by XRD. These data are in excellent agreement with similar data obtained from laboratory sampling of vendor supplied MST. Scanning Electron Microscopy (SEM) combined with Energy Dispersive X-ray Spectroscopy (EDS) analysis of washed/dried PRFT solids shows the particles to be like previous MST analyses consisting of irregular shaped micron-sized solids consisting primarily of Na and Ti. ? Thermogravimetric analysis of the washed and unwashed PRFT solids shows that the washed solids are very similar to MST solids. The TGA mass loss signal for the unwashed solids shows similar features to TGA performed on cellulose nitrate filter paper indicating significant presence of the deteriorated filter

Crawford, C.; Bannochie, C.

2014-05-12T23:59:59.000Z

267

Hydrogen diffusion in Lead Zirconate Titanate and Barium Titanate. | EMSL  

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

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

268

Campus Contacts Titan Bookstore Cafe  

E-Print Network [OSTI]

will receive them in a timely fashion. Thanks! We thank the Irvine Valley Faculty for their presence for a relaxing and happy holiday vacation. After all your hard work this semester, you deserve it! We look

de Lijser, Peter

269

Plasma Interactions in Titan's Ionosphere  

E-Print Network [OSTI]

causes of this discrepancy between measured and modeled electron densities using models calculating the production of ions due to solar photons and magnetospheric electrons precipitating down magnetic field lines and into the ionosphere, temperature...

Richard, Matthew

2013-05-31T23:59:59.000Z

270

IMPACTS OF SMALL COLUMN ION EXCHANGE STREAMS ON DWPF GLASS FORMULATION: KT08, KT09, AND KT10-SERIES GLASS COMPOSITIONS  

SciTech Connect (OSTI)

This report is the fourth in a series of studies of the impacts of the addition of Crystalline Silicotitanate (CST) and Monosodium Titanate (MST) from the Small Column Ion Exchange (SCIX) process on the Defense Waste Processing Facility (DWPF) glass waste form and the applicability of the DWPF process control models. MST from the Salt Waste Processing Facility (SWPF) is also considered in the study. The KT08-series of glasses was designed to evaluate any impacts of the inclusion of uranium and thorium in glasses containing the SCIX components. The KT09-series of glasses was designed to study the effect of increasing Al{sub 2}O{sub 3} and K{sub 2}O concentrations on the propensity for crystallization of titanium containing phases in high TiO{sub 2} concentration glasses. Earlier work on the KT05-series glasses recommended that the impact of these two components be studied further. Increased Al{sub 2}O{sub 3} concentrations have been shown to improve the properties and performance of high waste loading glasses, and K{sub 2}O has been reported to improve the retention of TiO{sub 2} in silicate glasses. The KT10-series of compositions was designed to evaluate any impacts of the SCIX components at concentrations 50% higher than currently projected.a The glasses were fabricated in the laboratory and characterized to identify crystallization, to verify chemical compositions, to measure viscosity, and to measure durability. Liquidus temperature measurements for the KT10-series glasses are underway and will be reported separately. All but one of the KT08-series glasses were found to be amorphous by X-ray diffraction (XRD). One of the slowly cooled glasses contained a small amount of trevorite, which had no practical impact on the durability of the glass and is typically found in DWPF-type glasses. The measured Product Consistency Test (PCT) responses for the KT08-series glasses are well predicted by the DWPF models. The viscosities of the KT08-series glasses were generally well predicted by the DWPF model. No unexpected issues were encountered when uranium and thorium were added to the glasses with SCIX components. Increased Al{sub 2}O{sub 3} concentrations were not successful in preventing the formation of iron titanate crystals in the KT09-series glasses. Increased K{sub 2}O concentrations were successful in hindering the formation of iron titanates in some of the glasses after the canister centerline cooled (CCC) heat treatment. However, this result did not apply to all of the CCC versions of the glasses, indicating a compositional dependence of this effect. In addition, high concentrations of K{sub 2}O have been shown to hinder the ability of the DWPF durability and viscosity models to predict the performance of these glasses. The usefulness of increased K{sub 2}O concentrations in preventing the formation of iron titanates may therefore be limited. Further characterization was not performed for the KT09-series glasses since the type of crystallization formed was the characteristic of interest for these compositions. All of the KT10-series glasses were XRD amorphous, regardless of heat treatment. Chemical composition measurements showed that the glasses met the targeted concentrations for each oxide. In general, the measured PCT responses of the KT10-series glasses were well predicted by the DWPF models. The measured, normalized release values for silicon for some of the glasses fell above the 95% confidence interval for the predicted values; however, the PCT responses for these glasses remain considerably lower than that of the benchmark Environmental Assessment (EA) glass. The viscosities of the KT10-series glasses were generally well predicted by the DWPF model. The next step in this study will be to compile all of the data developed and further compare the measured properties and performance with those predicted by the current DWPF Product Composition Control System (PCCS) models. Recommendations will then be made as to which models, if any, may need to be modified in order to accommodate the material from SCIX into DWPF

Fox, K.; Edwards, T.

2011-04-26T23:59:59.000Z

271

Results Of Routine Strip Effluent Hold Tank And Decontaminated Salt Solution Hold Tank Samples From Modular Caustic-Side Solvent Extraction Unit During Macrobatch 5 Operations  

SciTech Connect (OSTI)

Strip Effluent Hold Tank (SEHT) and Decontaminated Salt Solution Hold Tank (DSSHT) samples from several of the ''microbatches'' of Integrated Salt Disposition Project (ISDP) Salt Batch (''Macrobatch'') 5 have been analyzed for {sup 238}Pu, {sup 90}Sr, {sup 137}Cs, and by Inductively Coupled Plasma Emission Spectroscopy (ICPES). The results indicate good decontamination performance within process design expectations. While the data set is sparse, the results of this set and the previous set of results for Macrobatch 4 samples indicate generally consistent operations. The DSSHT samples show continued presence of titanium, likely from leaching of the monosodium titanate in the Actinide Removal process (ARP).

Peters, T. B.; Fondeur, F. F.

2013-04-30T23:59:59.000Z

272

E-Print Network 3.0 - acid monosodium salt Sample Search Results  

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

per kg of premix: phosphorus... Alters Amino Acid, but Not Glucose, Metabolism by the Sheep Gastrointestinal Tract1,2 Samer W. El... , MD 20705 ABSTRACT This study was intended...

273

THERMAL MODELING ANALYSIS OF CST MEDIA IN THE SMALL COLUMN ION EXCHANGE PROJECT  

SciTech Connect (OSTI)

Models have been developed to simulate the thermal characteristics of Crystalline Silicotitanate (CST) ion exchange media fully loaded with radioactive cesium in a column configuration and distributed within a waste storage tank. This work was conducted to support the Small Column Ion Exchange (SCIX) program which is focused on processing dissolved, high-sodium salt waste for the removal of specific radionuclides (including Cs-137, Sr-90, and actinides) within a High Level Waste (HLW) storage tank at the Savannah River Site. The SCIX design includes CST columns inserted and supported in the tank top risers for cesium removal. Temperature distributions and maximum temperatures across the column were calculated with a focus on process upset conditions. A two-dimensional computational modeling approach for the in-column ion-exchange domain was taken to include conservative, bounding estimates for key parameters such that the results would provide the maximum centerline temperatures achievable under the design configurations using a feed composition known to promote high cesium loading on CST. One salt processing scenario includes the transport of the loaded (and possibly ground) CST media to the treatment tank floor. Therefore, additional thermal modeling calculations were conducted using a three-dimensional approach to evaluate temperature distributions for the entire in-tank domain including distribution of the spent CST media either as a mound or a flat layer on the tank floor. These calculations included mixtures of CST with HLW sludge or loaded Monosodium Titanate (MST) media used for strontium/actinide sorption. The current full-scale design for the CST column includes one central cooling pipe and four outer cooling tubes. Most calculations assumed that the fluid within the column was stagnant (i.e. no buoyancy-induced flow) for a conservative estimate. A primary objective of these calculations was to estimate temperature distributions across packed CST beds immersed in waste supernate or filled with dry air under various accident scenarios. Accident scenarios evaluated included loss of salt solution flow through the bed (a primary heat transfer mechanism), inadvertent column drainage, and loss of active cooling in the column. The calculation results showed that for a wet CST column with active cooling through one central and four outer tubes and 35 C ambient external air, the peak temperature for the fully-loaded column is about 63 C under the loss of fluid flow accident, which is well below the supernate boiling point. The peak temperature for the naturally-cooled (no active, engineered cooling) wet column is 156 C under fully-loaded conditions, exceeding the 130 C boiling point. Under these conditions, supernate boiling would maintain the column temperature near 130 C until all supernate was vaporized. Without active engineered cooling and assuming a dry column suspended in unventilated air at 35 C, the fully-loaded column is expected to rise to a maximum of about 258 C due to the combined loss-of coolant and column drainage accidents. The modeling results demonstrate that the baseline design using one central and four outer cooling tubes provides a highly efficient cooling mechanism for reducing the maximum column temperature. Results for the in-tank modeling calculations clearly indicate that when realistic heat transfer boundary conditions are imposed on the bottom surface of the tank wall, as much as 450 gallons of ground CST (a volume equivalent to two ion exchange processing cycles) in an ideal hemispherical shape (the most conservative geometry) can be placed in the tank without exceeding the 100 C wall temperature limit. Furthermore, in the case of an evenly-distributed flat layer, the tank wall reaches the temperature limit after the ground CST material reaches a height of approximately 8 inches.

Lee, S.

2010-11-01T23:59:59.000Z

274

Classical confinement and outward convection of impurity ions in the MST RFP  

SciTech Connect (OSTI)

Impurity ion dynamics measured with simultaneously high spatial and temporal resolution reveal classical ion transport in the reversed-field pinch. The boron, carbon, oxygen, and aluminum impurity ion density profiles are obtained in the Madison Symmetric Torus [R. N. Dexter et al., Fusion Technol. 19, 131 (1991)] using a fast, active charge-exchange-recombination-spectroscopy diagnostic. Measurements are made during improved-confinement plasmas obtained using inductive control of tearing instability to mitigate stochastic transport. At the onset of the transition to improved confinement, the impurity ion density profile becomes hollow, with a slow decay in the core region concurrent with an increase in the outer region, implying an outward convection of impurities. Impurity transport from Coulomb collisions in the reversed-field pinch is classical for all collisionality regimes, and analysis shows that the observed hollow profile and outward convection can be explained by the classical temperature screening mechanism. The profile agrees well with classical expectations. Experiments performed with impurity pellet injection provide further evidence for classical impurity ion confinement.

Kumar, S. T. A.; Den Hartog, D. J.; Mirnov, V. V.; Eilerman, S.; Nornberg, M.; Reusch, J. A.; Sarff, J. S. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Caspary, K. J.; Chapman, B. E.; Parke, E. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Magee, R. M. [Department of Physics, West Virginia University, Morgantown, WV 26506 (United States); Brower, D. L.; Ding, W. X.; Lin, L. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095 (United States); Craig, D. [Physics Department, Wheaton College, Wheaton, Illinois 60187 (United States); Fiksel, G. [Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Laboratory for Laser Energetics, University of Rochester, Rochester, New York (United States)

2012-05-15T23:59:59.000Z

275

An integrated data analysis tool for improving measurements on the MST RFP  

SciTech Connect (OSTI)

Many plasma diagnostics contain complementary information. For example, the double-foil soft x-ray system (SXR) and the Thomson Scattering diagnostic (TS) on the Madison Symmetric Torus both measure electron temperature. The complementary information from these diagnostics can be combined using a systematic method based on integrated data analysis techniques, leading to more accurate and sensitive results. An integrated data analysis tool based on Bayesian probability theory was able to estimate electron temperatures that are consistent with both the SXR and TS diagnostics and more precise than either. A Markov Chain Monte Carlo analysis to increase the flexibility of the tool was implemented and benchmarked against a grid search method.

Reusch, L. M., E-mail: lmmcguire@wisc.edu; Galante, M. E.; Johnson, J. R.; McGarry, M. B.; Den Hartog, D. J. [Physics Department, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Franz, P. [Consorzio RFX, EURATOM-ENEA Association, Padova (Italy); Stephens, H. D. [Physics Department, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Pierce College Fort Steilacoom, Lakewood, Washington 98498 (United States)

2014-11-15T23:59:59.000Z

276

Charge-to-mass-ratio-dependent ion heating during magnetic reconnection in the MST RFP  

SciTech Connect (OSTI)

Temperature evolution during magnetic reconnection has been spectroscopically measured for various ion species in a toroidal magnetized plasma. Measurements are made predominantly in the direction parallel to the equilibrium magnetic field. It is found that the increase in parallel ion temperature during magnetic reconnection events increases with the charge-to-mass ratio of the ion species. This trend can be understood if the heating mechanism is anisotropic, favoring heating in the perpendicular degree of freedom, with collisional relaxation of multiple ion species. The charge-to-mass ratio trend for the parallel temperature derives from collisional isotropization. This result emphasizes that collisional isotropization and energy transfer must be carefully modeled when analyzing ion heating measurements and comparing to theoretical predictions.

Kumar, S. T. A.; Almagri, A. F.; Den Hartog, D. J.; Nornberg, M. D.; Sarff, J. S.; Terry, P. W. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States) [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Craig, D. [Wheaton College, Wheaton, Illinois 60187 (United States)] [Wheaton College, Wheaton, Illinois 60187 (United States)

2013-05-15T23:59:59.000Z

277

A Neural Model of Motion Processing and Visual Navigation by Cortical Area MST  

E-Print Network [OSTI]

­95­1­0657). ¶Supported in part by the Air Force Office of Scientific Research (AFOSR F49620­92­J­0334) the Defense fields, spatial pooling of motion­sensitive signals, and subtractive extraretinal eye movement sig­ nals properties and psychophysical data about human navigation. Model cells match MSTd neuron responses to optic

Grossberg, Stephen

278

A Neural Model of Motion Processing and Visual Navigation by Cortical Area MST  

E-Print Network [OSTI]

-95-1-0657). ¶Supported in part by the Air Force Office of Scientific Research (AFOSR F49620-92-J-0334) the Defense fields, spatial pooling of motion-sensitive signals, and subtractive extraretinal eye movement sig- nals properties and psychophysical data about human navigation. Model cells match MSTd neuron responses to optic

Grossberg, Stephen

279

LALP-07-018 Spring 2007 he MST-6 Materials Surface Science Investigations  

E-Print Network [OSTI]

Technology Division Facility Focus Collection of emitted photoelectrons along principal directions of an a-uranium(001 controlled water exposure indi- cates the clean conversion of Li2 O to LiOH and provides re- action kinetics

280

Topics: Discovering the lower limit to magnetic transport - MST - UW Plasma  

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

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Note: This page contains sample records for the topic "monosodium titanate mst" from the National Library of EnergyBeta (NLEBeta).
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281

Nuclear Materials Science:Materials Science Technology:MST-16:LANL:Los  

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282

Plasma Flow in MST: Effects of Edge Biasing and Momentum Transport  

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283

Plasma Velocity Profile During The Pulsed Poloidal Current Drive In The MST RFP Plasma  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006Photovoltaic Theory andVelocity Profile During The Pulsed Poloidal

284

Polymers and Coatings:Materials Science & Technology, MST-7: Los Alamos  

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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006Photovoltaic TheoryPlantElectrodes. |Ceramics. |Pt(111). |

285

Global confinement and discrete dynamo activity in the MST reversed-field pinch  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun with Big Sky LearningGet Assistance GetGiantOn The VergeGlobal Threat1

286

Improved-confinement plasmas at high temperature and high beta in the MST RFP  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFun withconfinementEtching.348 270 300 219 255RetrievalsVehicles and

287

Internal magnetic field structure and parallel electric field profile evolution during the sawtooth cycle in MST  

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288

Materials Science in Radiation and Dynamics Extremes:MST-8:LANL:Los Alamos  

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289

Metallurgy:Metallurgical Science:Materials Science & Technology:MST: Los  

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290

Microsoft Word - JMatyas_The Effects of Glass Doping _MST'13_112613.docx  

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291

Synthesis and characterization of new crystalline titanates  

E-Print Network [OSTI]

the material. Elemental analysis to determine the titanium, aluminum and sodium contents in weight percentages, was accomplished by atomic adsorption. A Varian AA-30 spectrophtometer with four lamp turrent was used to perform elemental analysis. Aluminum..., sodium and titanium atomic adsorption standard solutions were purchased from Aldrich Chemical Company. Energy dispersive spectroscopy (EDS) was performed on the catalysts in order to have a qualitative measure of the relative amounts of aluminum...

Gonzalez, Edwin Sabath

1991-01-01T23:59:59.000Z

292

Titan Gets Computational Company | ornl.gov  

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

memory. Rhea offers a full suite of post-processing software, including ParaView and iPython. "We are excited about bringing Rhea online so we can offer our users a dedicated...

293

Graph algorithms in the titan toolkit.  

SciTech Connect (OSTI)

Graph algorithms are a key component in a wide variety of intelligence analysis activities. The Graph-Based Informatics for Non-Proliferation and Counter-Terrorism project addresses the critical need of making these graph algorithms accessible to Sandia analysts in a manner that is both intuitive and effective. Specifically we describe the design and implementation of an open source toolkit for doing graph analysis, informatics, and visualization that provides Sandia with novel analysis capability for non-proliferation and counter-terrorism.

McLendon, William Clarence, III; Wylie, Brian Neil

2009-10-01T23:59:59.000Z

294

Synthesis and characterization of new cystalline titanates  

E-Print Network [OSTI]

present only when tetrapentyl ammonium bromide was used. Greater relative intensities of the peaks at 1490 cm-I and 1640 crn I were obtained when tetrabutyl ammonium bromide was used in the synthesis instead of tetrapropyl ammonium bromide. Exothermic...

Nge, Renita

1994-01-01T23:59:59.000Z

295

Sandia National Laboratories: crystalline silico-titanate  

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296

The effect of postnatal exposure to ethanol and/or Monosodium-L-glutamate on plasma luteinizing hormone  

E-Print Network [OSTI]

for teaching me the art of RIA assays. I also sincerely appreciate the guidance and support of Dr . George G. Stott for being on my graduate committee and for his friendship, encouragement and especially the invaluable assistance in reviewing my thesis... were analyzed utilizing analysis of variance (ANOVA). The LH concentrations were determined for all samples collected utilizing NIDDK r adiolmmunoassay (RIA) kit for rats, with the RP-2 LH reference standard. The data from the LH RIA...

Wagner, Robert William

1987-01-01T23:59:59.000Z

297

Characterization of sputtered barium strontium titanate and strontium titanate-thin films  

SciTech Connect (OSTI)

Sputtered Ba{sub 1{minus}x}Sr{sub x}TiO{sub 3} (BST) and SrTiO{sub 3} (STO) films and capacitors made with these dielectrics have been characterized with respect to physical and electrical properties. Specific capacitance values included a high of 96fF/{mu}m{sup 2} for BST films deposited of 600{degree}C and a high of 26fF/{mu}m{sup 2} for STO films deposited at 400{degree}C. Leakage current densities at 3.3 V for the most part varied from mid 10{sup {minus}8} to mid 10{sup {minus}6}A/cm{sup 2}. All of the dielectrics are polycrystalline, although the lowest temperature STO films have a nearly amorphous layer which impacts their capacitance. Grain size increases with deposition temperature, which correlates to higher dielectric constants. The lattice parameter of the BST films is larger than that of bulk samples. Capacitance, leakage, breakdown, and lifetime results are reported. {copyright} {ital 1997 American Institute of Physics.}

Baumert, B.A.; Chang, L.; Matsuda, A.T.; Tsai, T.; Tracy, C.J.; Gregory, R.B.; Fejes, P.L.; Cave, N.G.; Chen, W. [Materials Research and Strategic Technologies, Motorola Semiconductor Products Sector, 2200 W. Broadway Road, Mail Drop M360, Mesa, Arizona 85202 (United States)] [Materials Research and Strategic Technologies, Motorola Semiconductor Products Sector, 2200 W. Broadway Road, Mail Drop M360, Mesa, Arizona 85202 (United States); Taylor, D.J. [Advanced Materials Group, Materials Research and Strategic Technologies, 3501 Ed Bluestein Boulevard, Mail Drop K10, Austin, Texas 78721 (United States)] [Advanced Materials Group, Materials Research and Strategic Technologies, 3501 Ed Bluestein Boulevard, Mail Drop K10, Austin, Texas 78721 (United States); Otsuki, T.; Fujii, E.; Hayashi, S. [Matsushita Electronics Corporation, Electronics Research Laboratory, Corporate Technology Center, Takatsuki, Osaka, 569 (Japan)] [Matsushita Electronics Corporation, Electronics Research Laboratory, Corporate Technology Center, Takatsuki, Osaka, 569 (Japan); Suu, K. [Chiba Institute for Super Materials, Ulvac Japan, 523 Yokota Sanbu-Machi Sanbu-Gun, Chiba Prefecture, 289-12 (Japan)] [Chiba Institute for Super Materials, Ulvac Japan, 523 Yokota Sanbu-Machi Sanbu-Gun, Chiba Prefecture, 289-12 (Japan)

1997-09-01T23:59:59.000Z

298

Nondetection of Titan lightning radio emissions with Cassini/RPWS after 35 close Titan flybys  

E-Print Network [OSTI]

Hz [Schwingenschuh et al., 2007]. Additionally, a Schumann- like resonance was seen at 36 Hz, but its unusually high

Gurnett, Donald A.

299

Dear Colleagues, On behalf of the local organizing committee and the international steering committee we toke the  

E-Print Network [OSTI]

/iMST1) web site. Also, since the last deadline for both early and pre registration had expired, weMST1 web portal (http://www2.inpe.br/climaespacial/MST14/participate.php#registration_fee) and when of MST Radar (MST14/iMST1) web site. Also, since the last deadline for both early and pre registration

300

Development of Dodecaniobate Keggin Chain Materials as Alternative Sorbents for SR and Actinide Removal from High-Level Nuclear Waste Solutions  

SciTech Connect (OSTI)

The current baseline sorbent (monosodium titanate) for Sr and actinide removal from Savannah River Site's high level wastes has excellent adsorption capabilities for Sr but poor performance for the actinides. We are currently investigating the development of alternative materials that sorb radionuclides based on chemical affinity and/or size selectivity. The polyoxometalates, negatively-charged metal oxo clusters, have known metal binding properties and are of interest for radionuclide sequestration. We have developed a class of Keggin-ion based materials, where the Keggin ions are linked in 1- dimensional chains separated by hydrated, charge-balancing cations. These Nb-based materials are stable in the highly basic nuclear waste solutions and show good selectivity for Sr and Pu. Synthesis, characterization and structure of these materials in their native forms and Sr-exchanged forms will be presented.

Nyman, May; Bonhomme, Francois

2004-03-28T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Time-resolved ion energy distribution measurements using an advanced neutral particle analyzer on the MST reversed-field pinch  

SciTech Connect (OSTI)

An advanced neutral particle analyzer (ANPA) capable of simultaneously measuring hydrogen and deuterium ions of energies up to 45 keV has recently been developed for use on the Madison Symmetric Torus. The charge-to-mass separation allows for separate analysis of bulk deuterium ions and hydrogen ions injected with a 1 MW, 25 keV neutral beam. Orientation of the ANPA allows sampling of different regions of ion velocity space; a radial viewport favors collection of ions with high v{sub Up-Tack }/ Double-Vertical-Line v Double-Vertical-Line while a recently installed tangential viewport favors ions with high v{sub Double-Vertical-Line Double-Vertical-Line }/ Double-Vertical-Line v Double-Vertical-Line , such as those from the core-localized fast ion population created by the neutral beam. Signals are observed in the ANPA's highest energy channels during periodic magnetic reconnection events, which are drivers of anisotropic, non-Maxwellian ion energization in the reversed-field pinch. ANPA signal strength is dependent on the background neutral density, which also increases during magnetic reconnection events, so careful analysis must be performed to identify the true change in the ion distribution. A Monte Carlo neutral particle tracing code (NENE) is used to reconstruct neutral density profiles based on D{sub {alpha}} line emission, which is measured using a 16-chord filtered photodiode array.

Eilerman, S.; Anderson, J. K.; Reusch, J. A. [University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Liu, D. [University of California-Irvine, Irvine, California 92697 (United States); Fiksel, G. [University of Rochester, Rochester, New York 14623 (United States); Polosatkin, S.; Belykh, V. [Budker Institute of Nuclear Physics SB RAS, Novosibirsk (Russian Federation)

2012-10-15T23:59:59.000Z

302

SAMPLE RESULTS FROM THE INTEGRATED SALT DISPOSITION PROGRAM MACROBATCH 5 TANK 21H QUALIFICATION MST, ESS AND PODD SAMPLES  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) performed experiments on qualification material for use in the Integrated Salt Disposition Program (ISDP) Batch 5 processing. This qualification material was a composite created from recent samples from Tank 21H and archived samples from Tank 49H to match the projected blend from these two tanks. Additionally, samples of the composite were used in the Actinide Removal Process (ARP) and extraction-scrub-strip (ESS) tests. ARP and ESS test results met expectations. A sample from Tank 21H was also analyzed for the Performance Objectives Demonstration Document (PODD) requirements. SRNL was able to meet all of the requirements, including the desired detection limits for all the PODD analytes. This report details the results of the Actinide Removal Process (ARP), Extraction-Scrub-Strip (ESS) and Performance Objectives Demonstration Document (PODD) samples of Macrobatch (Salt Batch) 5 of the Integrated Salt Disposition Program (ISDP).

Peters, T.; Fink, S.

2012-04-24T23:59:59.000Z

303

Cassini-CIRS (Composite Infrared Spectrometer) Titan data  

E-Print Network [OSTI]

continuum due to: - thermal emission of the planet -collision induced absorption (CIA) of N2, CH4, H2 - haze; Constant water mixing ratio profile CIA: CH4- N2 150% of the Borysow , 1991, "nominal" ones, to fit

Kaiser, Ralf I.

304

9--Titan Invitational Newark, OH Result Pool A Pool B  

E-Print Network [OSTI]

Marion Newark, OH 1:00 W 3-2 13-- Ohio University Zanesville © Newark, OH 6:00 W 3-0 17-- Ashland University Ashland, OH 1:00 W 3-0 20-- Ohio University Lancaster © Lancaster, OH 6:00 W 3-0 23-- Lorain University Newark, OH 6:00 W 3-2 30-- Wayne College © Orrville, OH 1:00 W 3-0 OCTOBER 1-- Ashland University

305

Torque magnetometry of an amorphous-alumina/strontium-titanate interface  

E-Print Network [OSTI]

We report torque magnetometry measurements of an oxide heterostructure consisting of an amorphous Al[subscript 2]O[subscript 3] thin film grown on a crystalline SrTiO[subscript 3] substrate (a-AO/STO) by atomic layer ...

Lee, S. W.

306

Hierarchical Structure-Ferroelectricity Relationships of Barium Titanate Particles  

E-Print Network [OSTI]

approaching the same scale in the process of miniaturization. The identification of the most influential, have been well-studied in a bulk BaTiO3 crystal. Correspondingly, the cooperative effect scale in the process of miniatur- ization. The identification of the most influential struc- ture among

Aksay, Ilhan A.

307

Seasonal variations in Titan's atmospheric composition: observations and  

E-Print Network [OSTI]

(VIMS) 0.5-5 µm [Haze, CH4] 7-1000 µm [T, Composition, Haze] 0.4-1 µm [Haze] Cassini has 3 main pole to equator in stratosphere Contours = Zonal Wind (m/s) = photochemical lifetime White regions

Kaiser, Ralf I.

308

PHOTOCATALYTIC AND PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION ON STRONTIUM TITANATE SINGLE CRYSTALS  

E-Print Network [OSTI]

AND PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION ON STRONTIUMAND PHOTOELECTROCHEHICAL HYDROGEN PRODUCTION ON STRONTIUMand photocatalytic hydrogen production from SrTi0 3 crystals

Wagner, F.T.

2012-01-01T23:59:59.000Z

309

Phonon thermal transport through tilt grain boundaries in strontium titanate  

SciTech Connect (OSTI)

In this work, we perform nonequilibrium molecular dynamics simulations to study phonon scattering at two tilt grain boundaries (GBs) in SrTiO{sub 3}. Mode-wise energy transmission coefficients are obtained based on phonon wave-packet dynamics simulations. The Kapitza conductance is then quantified using a lattice dynamics approach. The obtained results of the Kapitza conductance of both GBs compare well with those obtained by the direct method, except for the temperature dependence. Contrary to common belief, the results of this work show that the optical modes in SrTiO{sub 3} contribute significantly to phonon thermal transport, accounting for over 50% of the Kapitza conductance. To understand the effect of the GB structural disorder on phonon transport, we compare the local phonon density of states of the atoms in the GB region with that in the single crystalline grain region. Our results show that the excess vibrational modes introduced by the structural disorder do not have a significant effect on phonon scattering at the GBs, but the absence of certain modes in the GB region appears to be responsible for phonon reflections at GBs. This work has also demonstrated phonon mode conversion and simultaneous generation of new modes. Some of the new modes have the same frequency as the initial wave packet, while some have the same wave vector but lower frequencies.

Zheng, Zexi; Chen, Xiang; Yang, Shengfeng; Xiong, Liming; Chen, Youping [Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, Florida 32611 (United States); Deng, Bowen; Chernatynskiy, Aleksandr [Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611 (United States)

2014-08-21T23:59:59.000Z

310

MEN'S AND WOMEN'S INDOOR SOCCER RULES Titan Recreation  

E-Print Network [OSTI]

. Under no circumstances will a player wearing a cast or splint be permitted to play. If eyeglasses are worn, they must be unbreakable. Each player is responsible for the safety of his/her own eyeglasses

de Lijser, Peter

311

A modified method for barium titanate nanoparticles synthesis  

SciTech Connect (OSTI)

Graphical abstract: TEM micrograph of BaTiO{sub 3} powders synthesized at 800 Degree-Sign C for 1 h and SAED pattern (inset) of BaTiO{sub 3} powders. In this research, a modified, cost efficient and quick sol-gel procedure was used for preparation of BaTiO{sub 3} nanoparticles. Highlights: Black-Right-Pointing-Pointer A modified process was used for preparation. Black-Right-Pointing-Pointer The modified process led to preparation of finer BaTiO{sub 3} nanoparticles in shorter period of time and lower temperature contrary to previous researches. Black-Right-Pointing-Pointer The proposed procedure seems to be more preferable for mass production. -- Abstract: In this research, a modified, cost effective sol-gel procedure applied to synthesize BaTiO{sub 3} nanoparticles. XRD and electron microscopy (SEM and TEM) applied for microstructural characterization of powders. The obtained results showed that the type of precursors, their ratio and the hydrolysis conditions had a great effect on time, temperature and therefore the costs of the synthesis process. By selection, utilization of optimized precursor's type, hydrolysis conditions, fine cubic BaTiO{sub 3} nanoparticles were synthesized at low temperature and in short time span (1 h calcination at 800 Degree-Sign C). The proposed procedure seems to be more preferable for mass production. The result indicated that the polymorphic transformation to tetragonal (ferroelectric characteristic) occurred at 900 Degree-Sign C, which might be an indication of being nanosized.

Ashiri, R., E-mail: ro_ashiri@iaud.ac.ir [Department of Materials Science and Engineering, Dezful Branch, Islamic Azad University, P.O. Box 313, Dezful (Iran, Islamic Republic of); Nemati, Ali [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran (Iran, Islamic Republic of)] [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran (Iran, Islamic Republic of); Sasani Ghamsari, M. [Solid State Lasers Research Group, Laser and Optics Research School, NSTRI, P.O. Box 11365-8486, Tehran (Iran, Islamic Republic of)] [Solid State Lasers Research Group, Laser and Optics Research School, NSTRI, P.O. Box 11365-8486, Tehran (Iran, Islamic Republic of); Sanjabi, S. [Nanomaterials Group, Department of Materials Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran (Iran, Islamic Republic of)] [Nanomaterials Group, Department of Materials Engineering, Tarbiat Modares University, P.O. Box 14115-143, Tehran (Iran, Islamic Republic of); Aalipour, M. [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran (Iran, Islamic Republic of)] [Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran (Iran, Islamic Republic of)

2011-12-15T23:59:59.000Z

312

Magnetoresistive Conductive Polyaniline-Barium Titanate Nanocomposites with Negative Permittivity  

E-Print Network [OSTI]

, and Department of Chemistry and Biochemistry, Lamar University, Beaumont, Texas 77710, United States § Department

Guo, John Zhanhu

313

Energetic ion precipitation at Titan T. E. Cravens,1  

E-Print Network [OSTI]

species [Waite et al., 2005]. Solar radiation and energetic plasma from Saturn's magnetosphere ionize the neutral atmosphere and create an ionosphere at altitudes above about 800 km [Bird et al., 1997; Wahlund et an iono- sphere at very low altitudes [Bird et al., 1997]. The creation of an ionosphere below 1000 km

California at Berkeley, University of

314

MHK Technologies/Titan Platform | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpIncMAKGalway Bay IEOWC <SurgeWECSails <Tide Current

315

Accumulation of Ion Beam Induced Disorder in Stronium Titanate. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUCProductstwrmrAre the Effects ofAboutTestAccounting - What happened Accountandof

316

Northern Virginia Technology Council Titans' Breakfast | Department of  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Year in3.pdfEnergyDepartment of Energy Advanced FramingBoost | Department of

317

The search for Titan lightning radio emissions G. Fischer1  

E-Print Network [OSTI]

was caused by lightning exciting a Schumann resonance in the ionospheric cavity. In a further investigation instability mechanism. Morente et al. [2008] claimed the extraction of six Schumann resonances in agreement

Gurnett, Donald A.

318

Response of Strontium Titanate to Ion and Electron Irradiation. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 Resource Program September 2010 B O N N E V I L L

319

Ion Tracks and Microstructures in Barium Titanate Irradiated with Swift  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponses toInvestigatingAdaptedInvestor|Heavy Ions: A Combined

320

Flipping the switch on magnetism in strontium titanate  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-SeriesFlickr Flickr Editor's note: Since the Flickr platform

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Titan Simulates Earthquake Physics Necessary for Safer Building Design |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism in Layered NbS2 andThe1A:decisional. 1 B O N N ESpectrometry.

322

NVIDIA Highlights GPU Progress on Titan Supercomputer | ornl.gov  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andData andFleet TestAccounts and Allocations FebruaryBrian195

323

Researchers recruit Titan to study key molecular switch that...  

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

images, such as those produced with x-ray crystallography. But signaling is a dynamic process, which is difficult to fully understand using only snapshots." To move beyond such...

324

Titan Propels GE Wind Turbine Research into New Territory | ornl...  

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

corporation that runs the gamut of industrial, energy, aviation, and consumer products-wind turbines represent a lot of potential in a market that could attract almost 100...

325

Laboratory Scoping Tests Of Decontamination Of Hanford Waste Treatment Plant Low Activity Waste Off-Gas Condensate Simulant  

SciTech Connect (OSTI)

The Hanford Waste Treatment and Immobilization Plant (WTP) Low Activity Waste (LAW) vitrification facility will generate an aqueous condensate recycle stream (LAW Off-Gas Condensate) from the off-gas system. The baseline plan for disposition of this stream is to send it to the WTP Pretreatment Facility, where it will be blended with LAW, concentrated by evaporation and recycled to the LAW vitrification facility again. Alternate disposition of this stream would eliminate recycling of problematic components, and would enable de-coupled operation of the LAW melter and the Pretreatment Facilities. Eliminating this stream from recycling within WTP would also decrease the LAW vitrification mission duration and quantity of glass waste. This LAW Off-Gas Condensate stream contains components that are volatile at melter temperatures and are problematic for the glass waste form. Because this stream recycles within WTP, these components accumulate in the Condensate stream, exacerbating their impact on the number of LAW glass containers that must be produced. Approximately 32% of the sodium in Supplemental LAW comes from glass formers used to make the extra glass to dilute the halides to acceptable concentrations in the LAW glass, and diverting the stream reduces the halides in the recycled Condensate and is a key outcome of this work. Additionally, under possible scenarios where the LAW vitrification facility commences operation prior to the WTP Pretreatment facility, identifying a disposition path becomes vitally important. This task seeks to examine the potential treatment of this stream to remove radionuclides and subsequently disposition the decontaminated stream elsewhere, such as the Effluent Treatment Facility (ETF), for example. The treatment process envisioned is very similar to that used for the Actinide Removal Process (ARP) that has been operating for years at the Savannah River Site (SRS), and focuses on using mature radionuclide removal technologies that are also compatible with longterm tank storage and immobilization methods. For this new application, testing is needed to demonstrate acceptable treatment sorbents and precipitating agents and measure decontamination factors for additional radionuclides in this unique waste stream. The origin of this LAW Off-Gas Condensate stream will be the liquids from the Submerged Bed Scrubber (SBS) and the Wet Electrostatic Precipitator (WESP) from the LAW melter off-gas system. The stream is expected to be a dilute salt solution with near neutral pH, and will likely contain some insoluble solids from melter carryover. The soluble components are expected to be mostly sodium and ammonium salts of nitrate, chloride, and fluoride. This stream has not been generated yet and will not be available until the WTP begins operation, but a simulant has been produced based on models, calculations, and comparison with pilot-scale tests. One of the radionuclides that is volatile and expected to be in high concentration in this LAW Off-Gas Condensate stream is Technetium-99 ({sup 99}Tc). Technetium will not be removed from the aqueous waste in the Hanford WTP, and will primarily end up immobilized in the LAW glass by repeated recycle of the off-gas condensate into the LAW melter. Other radionuclides that are also expected to be in appreciable concentration in the LAW Off-Gas Condensate are {sup 129}I, {sup 90}Sr, {sup 137}Cs, and {sup 241}Am. This report discusses results of preliminary radionuclide decontamination testing of the simulant. Testing examined use of Monosodium Titanate (MST) to remove {sup 90}Sr and actinides, inorganic reducing agents for {sup 99}Tc, and zeolites for {sup 137}Cs. Test results indicate that excellent removal of {sup 99}Tc was achieved using Sn(II)Cl{sub 2} as a reductant, coupled with sorption onto hydroxyapatite, even in the presence of air and at room temperature. This process was very effective at neutral pH, with a Decontamination Factor (DF) >577 in two hours. It was less effective at alkaline pH. Conversely, removal of the cesium was more effective at alka

Taylor-Pashow, Kathryn M.; Nash, Charles A.; Crawford, Charles L.; McCabe, Daniel J.; Wilmarth, William R.

2014-01-21T23:59:59.000Z

326

Parametric Evaluation of an Innovative Ultra-Violet Photocatalytic Oxidation (UVPCO) Air Cleaning Technology for Indoor Applications  

E-Print Network [OSTI]

Titan Technologies (Sebastopol, CA). The honeycomb monolithby Titan Technologies (Sebastopol, CA). This system uses

Hodgson, Alfred T.; Sullivan, Douglas P.; Fisk, William J.

2005-01-01T23:59:59.000Z

327

October 29th, 2001 APS DPP Meeting, Long Beach, CA Time Evolution of Measured Energy and Particle Transport in the MST Reversed-Field Pinch  

E-Print Network [OSTI]

October 29th, 2001 APS DPP Meeting, Long Beach, CA Time Evolution of Measured Energy and Particle.B. Forest University of Wisconsin-Madison 1Rensselaer Polytechnic Institute 2University of California minimum energy states, based onF>=0 plasmas are closer to Taylor minimum energy states, based

Biewer, Theodore

328

Evaluation of Alternative Filter Media for the Rotary Microfilter  

SciTech Connect (OSTI)

The Savannah River Site is currently developing and testing several processes to treat high level radioactive liquid waste. Each of these processes has a solid-liquid separation process that limits its throughput. Savannah River National Laboratory researchers identified and tested the rotary microfilter as a technology to increase solid-liquid separation throughput. The authors believe the rotary microfilter throughput can be improved by using a better filter membrane. Previous testing showed that asymmetric filters composed of a ceramic membrane on top of a stainless steel support produced higher filter flux than 100% stainless steel symmetric filters in crossflow filter tests. Savannah River National Laboratory and Oak Ridge National Laboratory are working together to develop asymmetric ceramic ? stainless steel composite filters and asymmetric 100% stainless steel filters to improve the throughput of the rotary microfilter. The Oak Ridge National Laboratory Inorganic Membrane Group fabricated samples of alternative filter membranes. In addition, Savannah River National Laboratory obtained samples of filter membranes from Pall, Porvair, and SpinTek. They tested these samples in a static test cell with feed slurries containing monosodium titanate and simulated sludge.

Poirier, M. R.; Herman, D. T.; Bhave, R.

2011-11-09T23:59:59.000Z

329

A Guidebook for Low-Carbon Development at the Local Level  

E-Print Network [OSTI]

Coal mining (production) Cement Iron-making Steel-making Electricity Pulp & paper Alcohol Monosodium glutamate Electrolytic aluminum Citric acid Coking

Zhou, Nan

2012-01-01T23:59:59.000Z

330

Polyaniline stabilized barium titanate nanoparticles reinforced epoxy nanocomposites with high dielectric  

E-Print Network [OSTI]

nanoparticle surface can promote the network formation of the epoxy resin. The introduction of the PANI layer was found to reduce the heat release rate and to increase the char residue of the epoxy resin. The dynamic nanoberepoxy resin has been fabricated to obtain enhanced tensile strength and electrical conductivity,5

Guo, John Zhanhu

331

The sound of Titan a role for acoustics in space exploration  

E-Print Network [OSTI]

's Venera missions to Venus). in early 2005 will undertake a 2.5 hour parachute descent However, were is generated the features associated with the terrestrial water cycle: seas, by environmental processes breakdown of ammonia (NH3) deposited from comets, producing N2 and hydrogen (which is sufficiently light

Sóbester, András

332

Structural and dielectric properties of Gd doped bismuth ferrite-lead titanate  

SciTech Connect (OSTI)

0.5BiGd{sub x}Fe{sub 1?x}O{sub 3}?0.5PbTiO{sub 3} with x=0.05, 0.10, 0.15, 0.20 composite was prepared by mixed oxide method. Structural characterization was performed by X-ray diffraction and studied that the materials show tetragonal structure at room temperature for all concentration of Gd. Studies of dielectric properties (?{sub r} and tan?) of the above compound at different frequencies in a wide range of temperature (25-500C) with an impedance analyser revealed that the dielectric constant increases with increase in Gd concentration as well temperature and the compound do not have any dielectric anomaly in the studied frequency and temperature range.

Mohanty, N. K., E-mail: Banarjibehera@gmail.com; Behera, A. K., E-mail: Banarjibehera@gmail.com; Satpathy, S. K., E-mail: Banarjibehera@gmail.com; Behera, B., E-mail: Banarjibehera@gmail.com; Nayak, P., E-mail: Banarjibehera@gmail.com [School of Physics, Sambalpur University, Jyoti Vihar, Burla-768019, Odisha (India)

2014-04-24T23:59:59.000Z

333

A tunable metamaterial dependent on electric field at terahertz with barium strontium titanate thin film  

SciTech Connect (OSTI)

A tunable metamaterial with resonance frequency at terahertz (THz) was developed. Electromagnetic response of the metamaterial was characterized with THz time domain spectrometer at various direct current electric fields. The resonance frequency increased monotonously with increasing electric field. The finite difference time domain method was used to simulate the transmission spectra of the metamaterial at THz frequencies. By comparing the simulated resonance frequency with the experimental curve, dielectric property of the Ba{sub 0.6}Sr{sub 0.4}TiO{sub 3} (BST60) thin film at THz, over 033?kV/cm, was evaluated.

Bian, Yanlong; Zhai, Jiwei, E-mail: apzhai@tongji.edu.cn [Function Materials Research Laboratory, Tongji University, Shanghai 200092 (China); Wu, Chao; Li, Hongqiang [Department of Physics Science and Engineering, Tongji University, Shanghai 200092 (China)

2014-01-27T23:59:59.000Z

334

Searching Room Temperature Ferromagnetism in Wide Gap Semiconductors Fe-doped Strontium Titanate and Zinc Oxide  

E-Print Network [OSTI]

Scientic findings in the very beginning of the millennium are taking us a step further in the new paradigm of technology: spintronics. Upgrading charge-based electronics with the additional degree of freedom of the carriers spin-state, spintronics opens a path to the birth of a new generation of devices with the potential advantages of non-volatility and higher processing speed, integration densities and power efficiency. A decisive step towards this new age lies on the attribution of magnetic properties to semiconductors, the building block of today's electronics, that is, the realization of ferromagnetic semiconductors (FS) with critical temperatures above room temperature. Unfruitful search for intrinsic RT FS lead to the concept of Dilute(d) Magnetic Semiconductors (DMS): ordinary semiconductor materials where 3 d transition metals randomly substitute a few percent of the matrix cations and, by some long-range mechanism, order ferromagnetically. The times are of intense research activity and the last few ...

Pereira, LMC; Wahl, U

335

Correlation between number of ferroelectric variants and coercive field of lead ziconate titanate single crystals  

E-Print Network [OSTI]

Understanding the magnitude of coercive fields, the external electric field that results in zero net field is defined as the magnitude of an external electric field, which results in zero net polarization. Theoretically, the coercive field calculated from a phenomenological thermodynamic theory assuming a perfect

Chen, Long-Qing

336

Numerical and Experimental Modeling of Natural Convection for a Cryogenic Prototype of a Titan  

E-Print Network [OSTI]

in Sutherland's law D = diameter g = gravitation acceleration h = convection coefficient k = thermal

Colonius, Tim

337

Untangling the Chemical Evolution of Titan's Atmosphere and Surface -- From Homogeneous to Heterogeneous Chemistry  

E-Print Network [OSTI]

infrared spectrum of the irradiated propane ice after heatinginfrared spectrum obtained for irradiated propane ices after controlled heatingsubstrate after heating to 300 K. The infrared spectrum

Kaiser, Ralf I.

2010-01-01T23:59:59.000Z

338

Precipitation-induced surface brightenings seen on Titan by Cassini VIMS and ISS  

E-Print Network [OSTI]

Abstract Observations from Cassini VIMS and ISS show localized but extensive surface brightenings in the wake of the 2010 September cloudburst. Four separate areas, all at similar latitude, show similar changes: Yalaing ...

Barnes, Jason W

339

Global mapping and characterization of Titan's dune fields with Cassini: Correlation between RADAR and VIMS observations  

E-Print Network [OSTI]

and VIMS observations S. Rodriguez a, , A. Garcia a , A. Lucas a , T. Appéré a , A. Le Gall b , E. Reffet the Cassini RADAR and VIMS (Visual and Infrared Mapping Spectrometer) images ­ the latter being empirically. Furthermore, the strong correlation between RADAR-mapped dunes and the VIMS ``dark brown'' unit (72%) allows

Narteau, Clément

340

Titanate and titania nanostructures and nanostructure assemblies, and methods of making same  

DOE Patents [OSTI]

The invention relates to nanomaterials and assemblies including, a micrometer-scale spherical aggregate comprising: a plurality of one-dimensional nanostructures comprising titanium and oxygen, wherein the one-dimensional nanostructures radiate from a hollow central core thereby forming a spherical aggregate.

Wong, Stanislaus S; Mao, Yuanbing

2013-05-14T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

NOVEMBER Results 3/4--Titan Tip-off Classic Tip-off Results  

E-Print Network [OSTI]

-39 16-- ORC State Tournament @ Newark, OH Results Winner 1:00 Ohio State Mansfield vs. Newark Campus 95-55 Chillicothe 17-- ORC State Tournament @ Newark, OH Results Winner 1:00 Ohio Univeristy Zanesvilel vs. Newark University Chillicothe 80-71 Clermont 23-- ORC State Finals @ Chillicothe, OH Results Winner 1:00 Ohio

342

A layered sodium titanate as promising anode material for sodium ion batteries  

E-Print Network [OSTI]

Sodium ion batteries have recently received great attention for large-scale energy applications because of the abundance and low cost of sodium source. Although some cathode materials with desirable electrochemical properties ...

Wu, Di, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

343

Titan's Carbon Budget and the Case of the Missing Ethane Eric H. Wilson*,,  

E-Print Network [OSTI]

-8099, Department of Atmospheric, Oceanic, and Space Sciences, UniVersity of Michigan, Ann Arbor, Michigan 48109 water ice and dark tholin material with the possibility of some condensed hydrocarbons and nitriles.13

Atreya, Sushil

344

Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium Titanate  

E-Print Network [OSTI]

Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium) with particle sizes ranging from 30 to 100 nm were synthesized via microwave-hydrothermal routes at various, but increased gradually with extended aging time in variable frequency (3-5.5 GHz to 1 s) processing

Dutta, Prabir K.

345

Barium Titanate Nanoparticles in Block Copolymer Tu Lee,*,, Nan Yao, Hiroaki Imai,, and Ilhan A. Aksay,  

E-Print Network [OSTI]

is not compromised. Nanometer-sized cubic BaTiO3 particles are commonly crystallized by hydrothermal processing from)6) on the hydroxylated polybutadiene matrix, and (3) hydrothermal reduction of the organometallic complexes in an NH3/H2O °C. Lilley and Wusirika processed monosized powders of cubic BaTiO3 by dispersing TiO2 powders

Aksay, Ilhan A.

346

Nonaqueous solution synthesis process for preparing oxide powders of lead zirconate titanate and related materials  

DOE Patents [OSTI]

A process is disclosed for producing powders of perovskite-type compounds which comprises mixing a metal alkoxide solution with a lead acetate solution to form a homogeneous, clear metal solution, adding an oxalic acid/n-propanol solution to this metal solution to form an easily filterable, free-flowing precursor powder and then calcining this powder. This process provides fine perovskite-phase powders with ferroelectric properties which are particularly useful in a variety of electronic applications. 4 figs.

Voigt, J.A.; Sipola, D.L.; Tuttle, B.A.; Anderson, M.T.

1999-06-01T23:59:59.000Z

347

Giant magnetoelectric effect in Nilead zirconium titanate cylindrical D. A. Pan,1,a  

E-Print Network [OSTI]

was protected by sili- cone rubber, it was bathed in nickel aminosulfonate plating solution to electrodeposit Ni synthesized by electrodeposition was studied in this paper. The ME voltage coefficient was measured. Electrodeposition can be used to make layered magnetoelectric composites, eliminating the need for the interfacial

Volinsky, Alex A.

348

Strain effect on coercive field of epitaxial barium titanate thin films S. Choudhury,1,a  

E-Print Network [OSTI]

, University Park, Pennsylvania 16802, USA 2 MPA-STC, MS K763, Los Alamos National Laboratory, Los Alamos, New

Chen, Long-Qing

349

A kinetic model for ion exchange between cesium and sodium using silico-titanates  

E-Print Network [OSTI]

over this entire range of pH. This unique characteristic makes the TAMS material desirable. Two other available organic ion exchangers (carboxylic acid based resin and resorcinol formaldehyde resin) show some capability for cesium removal; however... et al. (1947) used this method successfully to predict their data with the phenol-formaldehyde resinous exchanger, Amberlite IR-1. Similarly, Nachod and Wood (1944) and Turse and Rieman (1961) found their data fitted quite well on both zeolites...

Nguyen, Luan Thanh

1994-01-01T23:59:59.000Z

350

Fabrication, characterization and microwave properties of polyurethane nanocomposites reinforced with iron oxide and barium titanate  

E-Print Network [OSTI]

. Current address: Chemical Engineering Department, Lamar University, Beaumont, TX 77710, USA. Tel.: +1 4098807654. E-mail address: zhanhu.guo@lamar.edu (Z. Guo). www.elsevier.com/locate/actamat Availabl

Guo, John Zhanhu

351

Accelerated testing of a lanthanum-modified lead zirconate titanate capacitor.  

E-Print Network [OSTI]

??This literature begins by introducing the history of reliability and safety engineering. From here, a statistical foundation is laid with an emphasis on the distribution (more)

Smith, Cartel

2011-01-01T23:59:59.000Z

352

Planetary and Space Science 55 (2007) 18451876 Huygens' entry and descent through Titan's atmosphere--Methodology  

E-Print Network [OSTI]

, Austria c Department of Electrical and Computer Engineering, University of Idaho, Moscow, ID 83844-1023, USA d ESA Research and Scientific Support Department, ESTEC, 2200 AG Noordwijk, The Netherlands e the scientific payload. This paper presents the methodology and discuss the results of the reconstruction effort

Atkinson, David H.

353

Pit distribution in the equatorial region of Titan Kimberly A. Adams n  

E-Print Network [OSTI]

distribution and size to characterize these features and understand their formation. Chi-square analysis. However, analysis of the densest cluster of pits, a group of 50, shows a more random distribution. Fractal analysis and comparison with a same-sized random set find only a hint of linearity. A Poisson distribution

Jurdy, Donna M.

354

Effect of Sulfur and Hydrocarbon Fuels on Titanate/Ceria SOFC Anodes  

SciTech Connect (OSTI)

The purpose of the project is to develop low-cost, high-performance anodes that offer low polarization resistance as well as improved tolerance for nonidealities in anode environment such as redox cycles, sulfur and other poisons, and hydrocarbons.

Marina, O.A.; Pedersen, L.R.; Stevenson, J.W.

2005-01-27T23:59:59.000Z

355

Seasonal change in Titan's haze 19922002 from Hubble Space Telescope observations  

E-Print Network [OSTI]

at 889 nm has inverted, becoming north-bright, a variation consistent with haze transport towards.g., haze particle number densities requires assumptions on haze scattering function, optical properties from STIS data. Data from the Advanced Camera for Surveys (ACS) will be reported elsewhere. [6

Lorenz, Ralph D.

356

E-Print Network 3.0 - advanced lithium titanate Sample Search...  

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

California Institute of Technology Collection: Materials Science 92 Measurement of lithium isotope ratios by quadrupole-ICP-MS: application to seawater and natural carbonates...

357

Neutron irradiation effects on domain wall mobility and reversibility in lead zirconate titanate thin films  

E-Print Network [OSTI]

and sensing applications in satellite and nuclear power technology where radiation damage may determine, Austin, Texas 78758, USA 2 Electronic, Optic and Nano Materials Department, Sandia National Laboratories online 28 March 2013) The effects of neutron-induced damage on the ferroelectric properties of thin film

Ferreira, Paulo J.

358

Barium Titanate Nanoparticles as Exogenous Contrast Agents in Second Harmonic Optical Coherence Tomography  

E-Print Network [OSTI]

fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved by: Chair of Committee, Brian Applegate Committee Members, Kristen Maitland Jim Ji Head of Department, Gerard Cote May 2013 Major Subject: Biomedical Engineering...-OCT without producing inferior reflector artifacts. 38 REFERENCES Applegate, Brian. (2004). Polarization-resolved Second-harmonic-generation Optical Coherence Tomography in Collagen. Optics Letters, 29(19), 2252-2254. H?usler G., Lindner M. W...

Pearson, Jeremy T

2013-05-06T23:59:59.000Z

359

Ionization sources in Titan's deep ionosphere Marina Galand,1,2  

E-Print Network [OSTI]

occultation [Bird et al., 1997] but whether it is produced primarily by solar radiation or electron and suprathermal electrons. A model describing the solar and electron energy deposition is used as an organizing conditions in the deep ionosphere (solar zenith angle and flyby. Its

Yelle, Roger V.

360

Solvothermal synthesis of designed nonstoichiometric strontium titanate for efficient visible-light photocatalysis  

SciTech Connect (OSTI)

SrTiO{sub 3} powders with various Sr/Ti atomic ratios were synthesized by microwave-assisted solvothermal reactions of SrCl{sub 2} and Ti(OC{sub 3}H{sub 7}){sub 4} in KOH aqueous solutions. The nanoparticles of perovskite type SrTiO{sub 3} structure with the particle size of 30-40 nm were synthesized. The photocatalytic activity was determined by deNO{sub x} ability using light emitting diode lamps of various wavelengths such as 627 nm (red), 530 nm (green), 445 nm (blue), and 390 nm (UV). The photocatalytic activity significantly changed depending on the Sr/Ti atomic ratio, i.e., the strontium rich sample (Sr/Ti atomic ratio>1) showed excellent visible light responsive photocatalytic activity for the oxidative destruction of NO.

Sulaeman, Uyi; Yin, Shu; Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577 (Japan)

2010-09-06T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Chinese supercomputer stays No. 1, Titan at ORNL still No. 2 | ornl.gov  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User Group and Userof a blast-resistantChemistryChin Guok AboutChinese

362

Very Stable Electron Field Emission From Strontium Titanate CoatedCarbon  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear SecurityTensile Strain Switched Ferromagnetism inS-4500IIVasudha Patri MechanicalofVehiclesornl.gov

363

New Titan Supercomputer Named Fastest in the World | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen OwnedofDepartment ofJaredOak Ridge’sCut Businesses'DepartmentDepartment

364

New Titan Supercomputer Named Fastest in the World | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen OwnedofDepartment ofJaredOak Ridge’sCut Businesses'DepartmentDepartmentOak

365

November 12, 2012: "Titan" named world's most powerful supercomputer |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen OwnedofDepartment ofJaredOak Ridge’sCutWorkersNiketaEfficiency |

366

Pb nanowire formation on Al/lead zirconate titanate surfaces in  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006 TheSteven AshbyDepartment ofGE's E.GilmanKurt's ColumnPayroll

367

Damage evolution in Au-implanted Ho2Ti2O7 titanate pyrochlore. | EMSL  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phases onOrganizationElectronic2005-2007 BudgetFlightEvolutionDamage

368

Researchers recruit Titan to study key molecular switch that controls cell  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared atEffect ofNational Laboratory This bar chart shows

369

Iron-based Superconductor Simulations Spin Out New Possibilities on Titan |  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsingFunInfrared LandResponsesIon/Surface Reactions andOctoberOxideornl.gov

370

Solvable problems - Titan expands the realm of the possible | ornl.gov  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassiveSubmittedStatus Tom Fletcher,Future | DepartmentSolar and windAbout UsCenter

371

INL Portal Support  

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

Planned Monthly Maintenance The INL Portal may temporarily be down between 6:00 PM MST and 10:00 PM MST on the third Thursday of each month for server maintenance....

372

El Paso Electric Company- Solar PV Pilot Program  

Broader source: Energy.gov [DOE]

'''''El Paso Electric's 2013 Solar PV Rebate program will reopen at 12:00 pm MST on February 1, 2013.'''''

373

Inpatient Treatment of Children and Adolescents  

E-Print Network [OSTI]

-based multisystemic therapy (MST) as an alternative to the hospitalization of youth in psychiatric crisis: clinical ` outcomes. Journal of Quasi-experimental design with random assignment to two treatment groups: inpatient hospitalization and home- based MST..., with symptomatology assessments and consumer satisfaction taken three times: within 24 hours or recruitment, shortly after the hospitalized youth was released and at completion of MST home-based services. (n = 113), MST (n = 57), psychiatric inpatient (n = 56...

Barfield, Sharon T.; Petr, Chris

2001-10-01T23:59:59.000Z

374

Sample Results From The Interim Salt Disposition Program Macrobatch 7 Tank 21H Qualification Samples  

SciTech Connect (OSTI)

Savannah River National Laboratory (SRNL) analyzed samples from Tank 21H in support of qualification of Macrobatch (Salt Batch) 7 for the Interim Salt Disposition Program (ISDP). An ARP and several ESS tests were also performed. This document reports characterization data on the samples of Tank 21H as well as simulated performance of ARP/MCU. No issues with the projected Salt Batch 7 strategy are identified, other than the presence of visible quantities of dark colored solids. A demonstration of the monosodium titanate (0.2 g/L) removal of strontium and actinides provided acceptable 4 hour average decontamination factors for Pu and Sr of 3.22 and 18.4, respectively. The Four ESS tests also showed acceptable behavior with distribution ratios (D(Cs)) values of 15.96, 57.1, 58.6, and 65.6 for the MCU, cold blend, hot blend, and Next Generation Solvent (NGS), respectively. The predicted value for the MCU solvent was 13.2. Currently, there are no models that would allow a prediction of extraction behavior for the other three solvents. SRNL recommends that a model for predicting extraction behavior for cesium removal for the blended solvent and NGS be developed. While no outstanding issues were noted, the presence of solids in the samples should be investigated in future work. It is possible that the solids may represent a potential reservoir of material (such as potassium) that could have an impact on MCU performance if they were to dissolve back into the feed solution. This salt batch is intended to be the first batch to be processed through MCU entirely using the new NGS-MCU solvent.

Peters, T. B.; Washington, A. L. II

2013-08-08T23:59:59.000Z

375

http://www.sgvtribune.com/environment-and-nature/20140212/officials-urge-californians-to-prepare-for-climate-change Page 1 of 3 Mar 03, 2014 05:21:56PM MST  

E-Print Network [OSTI]

to hydroelectric energy to weather forecasting. The ongoing statewide drought may be a precursor of things to come Climate Risks," said Ann Chan, deputy secretary for climate and energy at the California Natural Resources change. Residents of Venice, Wilmington and San Pedro are among the most vulnerable because

Rohs, Remo

376

CSUF Clubs & Organizations!!! What can the Titan Pride Center do for you? The Titan Pride Center wants to help get the word out about CSUF clubs and organizations! Check out all of the ways we can help your group!  

E-Print Network [OSTI]

wants to help get the word out about CSUF clubs and organizations! Check out all of the ways we can help of your promotional materials. We will have a table ready for you and even help promote with you! Puzzle

de Lijser, Peter

377

Ion exchange columns for selective removal of cesium from aqueous radioactive waste using hydrous crystalline silico-titanates  

E-Print Network [OSTI]

conscious society. In Hanford, WA, hundreds of underground storage tanks hold tens of millions of gallons of aqueous radioactive waste. This liquid waste, which has a very high sodium content, contains trace amounts of radioactive cesium 137. Since... the material for batch ion exchange of the nuclear waste solution. More research was needed to investigate the material's effectiveness in a column operation. An ion exchange column system was developed to study column performance. The column design...

Ricci, David Michael

1995-01-01T23:59:59.000Z

378

Planetary and Space Science 54 (2006) 15521562 On the discovery of CO nighttime emissions on Titan by Cassini/VIMS  

E-Print Network [OSTI]

by Cassini/VIMS: Derived stratospheric abundances and geological implications Kevin H. Bainesa,?, Pierre of Cassini/VIMS. Earth, Moon, and Planets, 96, 119­147]. in Cassini/ VIMS spectral imagery. We identify

Atreya, Sushil

379

Response of intergrown microstructure to an electric field and its consequences in the lead-free piezoelectric bismuth sodium titanate  

SciTech Connect (OSTI)

We investigate the R3c average structure and micro-structure of the ceramic Bi{sub 0.5}Na{sub 0.5}TiO{sub 3} (BNT) in situ under applied electric fields using diffraction techniques. Electron diffraction implies the presence of significant octahedral tilt twin disorder, corresponding to the existence of a fine scale intergrown microstructural (IGMS) 'phase' within the R3c rhombohedral average structure matrix. A careful neutron refinement suggests not only that the off-centre displacements of the cations relative to the oxygens in the R3c regions increases systematically on application of an electric field but also that the phase fraction of the IGMS regions increases systematically. The latter change in phase fraction on application of the electric field enhances the polar displacement of the cations relative to the oxygen anions and affects the overall strain response. These IGMS regions form local polar nano regions that are not correlated with one another, resulting in polarisation relaxation and strain behaviour observed in BNT-containing materials. - Graphical abstract: The intergrown microstructure at very fine scales within the R3c rhombohedral phase matrix of BNT, originating from octahedral tilt twinning disorder, will increase with respect to an external field. Highlights: Black-Right-Pointing-Pointer The existence of an intergrown microstructural 'phase' within the average structure matrix. Black-Right-Pointing-Pointer This phase fraction of the intergrown microstructural regions changes. Black-Right-Pointing-Pointer Such regions form local polar nano regions that are not correlated with one another.

Liu Yun, E-mail: yliu@rsc.anu.edu.au [Research School of Chemistry, Australian National University, ACT 0200 (Australia); Noren, Lasse [Research School of Chemistry, the Australian National University, ACT 0200 (Australia); Studer, Andrew J. [Bragg Institute, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC NSW 2232 (Australia); Withers, Ray L.; Guo Yiping [Research School of Chemistry, Australian National University, ACT 0200 (Australia); Li Yongxiang [State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); Yang Hui [Research School of Chemistry, Australian National University, ACT 0200 (Australia); College of Life Science and Technology, Shaanxi University of Science and Technology, Xian 710021 (China); Wang Jian [Research School of Chemistry, Australian National University, ACT 0200 (Australia)

2012-03-15T23:59:59.000Z

380

TITAN : an advanced three dimensional coupled neutronicthermal-hydraulics code for light water nuclear reactor core analysis  

E-Print Network [OSTI]

The accurate analysis of nuclear reactor transients frequently requires that neutronics, thermal-hydraulics and feedback be included. A number of coupled neutronics/thermal-hydraulics codes have been developed for this ...

Griggs, D. P.

1984-01-01T23:59:59.000Z

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


381

Family Centered Home-Based Models for Placement Prevention  

E-Print Network [OSTI]

goal of maintaining children in the family home. They also avoid pathologizing the client, family, and surrounding systems. MST and Wraparound have the most saliently developed theoretical frameworks. Guidelines for MST provider credentials, caseload... saliently developed structure in reference to caseload size and duration/frequency of service, but lacks specificity of provider credentials. Case Management is the least clearly defined in the literature. Finally, MST has the most well- developed...

Swaim, Tara; Petr, Chris

2003-02-01T23:59:59.000Z

382

Call issued for Proton Radiography Facility proposals  

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

into FY17. January 5, 2015 Amy Clarke and Seth Imhoff of Materials Technology-Metallurgy (MST-6) align a copper density calibration object for a proton radiography...

383

Neutrons used to study model vascular systems  

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

personnel working at the plant. Amy Clarke and Seth Imhoff of Materials Technology-Metallurgy (MST-6) align a copper density calibration object for a proton radiography...

384

IOP PUBLISHING and INTERNATIONAL ATOMIC ENERGY AGENCY NUCLEAR FUSION Nucl. Fusion 47 (2007) 14491457 doi:10.1088/0029-5515/47/11/006  

E-Print Network [OSTI]

-D; and electron heat diffusivities in non-tokamak experiments (NSTX/ST, MST/RFP, SSPX/spheromak). The radial

Callen, James D.

385

MagLab - Magnets and Materials  

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

needed for everything from magnets for fusion, high energy physics, MRI, to electric power transmission lines and transformers. ASC and MS&T have particularly strong...

386

E-Print Network 3.0 - aiaa atmospheric flight Sample Search Results  

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

search results for: aiaa atmospheric flight Page: << < 1 2 3 4 5 > >> 1 Simulation Architecture Development of a Distributed Summary: , & Valasek 2008 - AIAA - MST Software Key...

387

E-Print Network 3.0 - atmospheric turbulence Sample Search Results  

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

Summary: by dissipation of the turbulent energy and tur- bulent eddies will transport heat to different atmospheric re... ., MST radar studies of wind and turbulence in the...

388

Strategic Plan FY14-FY18  

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

and divisions in more detail. . . . MST develops integrated solutions for operational efficiency and effectiveness. Figure 4. Sandia's organizational functions 22 S a n d i a N...

389

Icarus 156, 176183 (2002) doi:10.1006/icar.2001.6779, available online at http://www.idealibrary.com on  

E-Print Network [OSTI]

on both Earth and Titan. While eruption velocities on Earth are usu- ally limited by the low sound speed in water­steam mixtures, sound speeds in Titan fluids are higher and the Titan limit is imposed: Titan; geological processes; volcanism. 1. INTRODUCTION The motion of liquid water on the Earth

Lorenz, Ralph D.

390

Life extension program for the modular caustic side solvent extraction unit at Savannah River Site  

SciTech Connect (OSTI)

Caustic Side Solvent Extraction (CSSX) is currently used at the U.S. Department of Energy (DOE) Savannah River Site (SRS) for removal of cesium from the high-level salt-wastes stored in underground tanks. At SRS, the CSSX process is deployed in the Modular CSSX Unit (MCU). The CSSX technology utilizes a multi-component organic solvent and annular centrifugal contactors to extract cesium from alkaline salt waste. Coalescers and decanters process the Decontaminated Salt Solution (DSS) and Strip Effluent (SE) streams to allow recovery and reuse of the organic solvent and to limit the quantity of solvent transferred to the downstream facilities. MCU is operated in series with the Actinide Removal Process (ARP) which removes strontium and actinides from salt waste utilizing monosodium titanate. ARP and MCU were developed and implemented as interim salt processing until future processing technology, the CSSX-based Salt Waste Processing Facility (SWPF), is operational. SWPF is slated to come on-line in October 2014. The three year design life of the ARP/MCU process, however, was reached in April 2011. Nevertheless, most of the individual process components are capable of operating longer. An evaluation determined ARP/MCU can operate until 2015 before major equipment failure is expected. The three year design life of the ARP/MCU Life Extension (ARP/MCU LE) program will bridge the gap between current ARP/MCU operations and the start of SWPF operation. The ARP/MCU LE program introduces no new technologies. As a portion of this program, a Next Generation Solvent (NGS) and corresponding flowsheet are being developed to provide a major performance enhancement at MCU. This paper discusses all the modifications performed in the facility to support the ARP/MCU Life Extension. It will also discuss the next generation chemistry, including NGS and new stripping chemistry, which will increase cesium removal efficiency in MCU. Possible implementation of the NGS chemistry in MCU accomplishes two objectives. MCU serves as a demonstration facility for improved flowsheet deployment at SWPF; operating with NGS and boric acid validates improved cesium removal performance and increased throughput as well as confirms Defense Waste Processing Facility (DWPF) ability to vitrify waste streams containing boron. NGS implementation at MCU also aids the ARP/MCU LE operation, mitigating the impacts of delays and sustaining operations until other technology is able to come on-line.

Samadi-Dezfouli, Azadeh

2012-11-14T23:59:59.000Z

391

Decisions in Economics and Finance manuscript No. (will be inserted by the editor)  

E-Print Network [OSTI]

Bohner and Gregory M. Gelles Received: date / Accepted: date Abstract This paper discusses utility that in portfolios of one risky and Martin Bohner and Gregory M. Gelles Missouri University of Science and Technology Department of Economics Rolla, Missouri 65409-0020, USA E-mail: bohner@mst.edu, gelles@mst.edu #12;2 one

Bohner, Martin

392

Bound states of tunneling electrons in molecular chains M. A. Kozhushner,1 V. S. Posvyanskii,1 and I. I. Oleynik2  

E-Print Network [OSTI]

-state energy spectrum of the negative molecular ion, i.e., the system consisting of one electron plus a neutral scattering theory MST . The subbarrier scattering operators, the fundamental building blocks of MST that the energy spectrum of the bound states of the tunneling electron in a linear chain of three

Oleynik, Ivan

393

Energy-Efficient Routing Schemes for Wireless Sensor Networks  

E-Print Network [OSTI]

1 Energy-Efficient Routing Schemes for Wireless Sensor Networks Maleq Khan Gopal Pandurangan Bharat spanning tree (MST) is the optimal data aggregation tree for energy-efficient rout- ing. We then study energy-efficient distributed algorithms for constructing MSTs. The GHS algorithm to construct MST has

Khan, Maleq

394

Collective Intelligence of the Arti cial Life Community on Its  

E-Print Network [OSTI]

Steen Rasmussen Self-Organizing Processes EES-6, MS-T003 Los Alamos National Laboratory Los Alamos, NM 87545 and Santa Fe Institute 1399 Hyde Park Road Santa Fe, NM 87501 steen@lanl.gov Michael J. Raven Reed College 3203 SE Woodstock Blvd. Portland, OR 97202 and Self-Organizing Processes EES-6, MS-T003 Los Alamos

Rasmussen, Steen

395

Missouri University of Science and Technology 1 Petroleum Engineering  

E-Print Network [OSTI]

Missouri University of Science and Technology 1 Petroleum Engineering The Petroleum Engineering include reservoir enhancement, hydraulic fracturing, CO2 sequestration, gel treatments, drilling, well: http://gse.mst.edu/ or http://petroleum.mst.edu/ . Baojun Bai, Associate Professor PHD New Mexico

Missouri-Rolla, University of

396

Pyroelectric response mechanism of barium strontium titanate ceramics in dielectric bolometer mode: The underlying essence of the enhancing effect of direct current bias field  

SciTech Connect (OSTI)

Pyroelectric response mechanism of Ba{sub 0.70}Sr{sub 0.30}TiO{sub 3} ceramics under dielectric bolometer (DB) mode was investigated by dielectric and pyroelectric properties measurement. The variations of total, intrinsic, and induced pyroelectric coefficients (p{sub tot}, p{sub int}, p{sub ind}) with temperatures and bias fields were analyzed. p{sub int} plays the dominant role to p{sub tot} through most of the temperature range and p{sub ind} will be slightly higher than p{sub int} above T{sub 0}. The essence of the enhancing effect of DC bias field on pyroelectric coefficient can be attributed to the high value of p{sub int}. This mechanism is useful for the pyroelectric materials (DB mode) applications.

Mao, Chaoliang; Cao, Sheng; Yan, Shiguang; Yao, Chunhua; Cao, Fei; Wang, Genshui; Dong, Xianlin [Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Changning, Shanghai 200050 (China)] [Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Changning, Shanghai 200050 (China); Hu, Xu; Yang, Chunli [Kunming Institute of Physics, Kunming 650223 (China)] [Kunming Institute of Physics, Kunming 650223 (China)

2013-06-17T23:59:59.000Z

397

BIRTH WAILS AND DEATH THROES of celestial titans--such as the black holes (spheres) colliding in this supercomputer simulation--rumble through the  

E-Print Network [OSTI]

engine noise from jets passing over- head can work its way in," Raab says. Down in the control room, we to his eyes, on a mound near the center of the LIGO Hanford Observatory. He runs his gaze northward down GRAVITATIONAL WAVES. BUT WILL IT WORK? A TRIAL RUN PUT IT TO THE TEST BY W. WAYT GIBBS COPYRIGHT 2002 SCIENTIFIC

Millis, Andrew

398

Nanoparticle growth Controlled Growth of Platinum Nanoparticles on Strontium  

E-Print Network [OSTI]

Nanoparticle growth Controlled Growth of Platinum Nanoparticles on Strontium Titanate Nanocubes nanoparticles platinum strontium titanate X-ray analysis 750 ? 2009 Wiley-VCH Verlag GmbH & Co. KGa

Poeppelmeier, Kenneth R.

399

Materials Research Lab -Cooperative International Science and Engineering Internships http://www.mrl.ucsb.edu/mrl/outreach/educational/CISEI/interns_08winter/interns_08winter.html[5/10/12 10:34:13 AM  

E-Print Network [OSTI]

Strontium Titanate Ivana Sabaj Chemistry / Chemical Engineering, University of Chile, Santiago Daniel homepage Site Map // Webmail // Site Privacy Notification Guidelines // National Science Foundation // UCSB: MRL Optical Transmission Study of Reduced Strontium Titanate The interpretation of the transport

Bigelow, Stephen

400

Building America Webinar: Central Multifamily Water Heating Systems...  

Energy Savers [EERE]

Building America Webinar: Central Multifamily Water Heating Systems Building America Webinar: Central Multifamily Water Heating Systems January 21, 2015 11:00AM to 12:30PM MST...

Note: This page contains sample records for the topic "monosodium titanate mst" 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

U.S. Department of Energy Categorical Exclusion ...  

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

sample of Tank 49H will undergo a MST strike test and an Extraction-Scrub-Strip (ESS) test. B3.6 - Small-scale research and development, laboratory operations, and pilot...

402

CX-007632: Categorical Exclusion Determination | Department of...  

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

sample of Tank 49H will undergo a MST strike test and an Extraction-Scrub-Strip (ESS) test. CX-007632.pdf More Documents & Publications CX-010489: Categorical Exclusion...

403

U.S. Department of Energy Categorical Exclusion ...  

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

portions of this material will undergo a MST strike test and an Extraction- Scrub-Strip (ESS) test. B3.6 - Small-scale research and development, laboratory operations, and pilot...

404

Money & More: MATIC Tribal Resource Forum for Arizona Tribes...  

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

4:30PM MST Hosted by the Multi-Agency Tribal Infrastructure Collaborative (MATIC), this free Multi-Agency Resource Forum will share funding, technical assistance, training, and...

405

Microsoft Word - 2012 Research Day Winners.docx  

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

C-IIAC Adam Manzanares, HPC-5 Xiaoying Pang, AOT-ABS Samrat Choudhury, MST-8 Anirban Chaudhuri, MPA-11 Ryan Baumbach, MPA-CMMS David Fredenburg, WX-9 Honorable Mentions Ramesh...

406

Transport of phage P22 DNA into the cytoplasm of salmonella enterica serovar Typhimurium  

E-Print Network [OSTI]

the pi (?) protein (encoded by the pir genes). Introductionthe Tn5-RL27 plasmid into a pir recipient cell followed byto Salmonella. MST 3848 [LT2 pir + /pRL27e] was the source

Perez, Gerardo Legrama

2008-01-01T23:59:59.000Z

407

INSTITUTE OF PHYSICS PUBLISHING MEASUREMENT SCIENCE AND TECHNOLOGY Meas. Sci. Technol. 13 (2002) 8491 PII: S0957-0233(02)28495-7  

E-Print Network [OSTI]

.iop.org/MST/13/84 Abstract An inexpensive and portable pulsed light emitting diode (LED) source with variable availableintheformofindiumgalliumnitridebasedcompound semiconductors [5] used to fabricate laser diodes and light emitting diodes (LEDs). The dc output

Strathclyde, University of

408

CoverSheet  

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

overseen by MST-6, that is available for use by qualified users. In FY12 the EML service contract costs were covered by funds from LDRD, BES, NE and other programs. Users...

409

Persistence in Discrete Optimization under Data Uncertainty  

E-Print Network [OSTI]

problems, say for instance the spanning tree and route guidance problems, persistency ... is expressed as a (random) solution to another 0-1 stochastic optimization ...... In this section, we study the minimum spanning tree (MST) problem under...

2005-04-19T23:59:59.000Z

410

SIAM J. COMPUT. c 2005 Society for Industrial and Applied Mathematics Vol. 34, No. 6, pp. 13701379  

E-Print Network [OSTI]

­1379 APPROXIMATING THE MINIMUM SPANNING TREE WEIGHT IN SUBLINEAR TIME BERNARD CHAZELLE, RONITT RUBINFELD, AND LUCA minimum spanning tree (MST) of G "local spanning trees" whose sizes are specified by a stochastic process. From the local information

Chazelle, Bernard

411

Exploring How Municipal Utilities Fund Solar Energy Projects Webinar  

Broader source: Energy.gov [DOE]

This free webinar presented by the DOE Office of Energy Efficiency and Renewable Energy will take place on February 19, 2013, from 1-2:15 p.m. MST. It will provide information on Concord Light, the...

412

Materials Science & Engineering  

E-Print Network [OSTI]

and Forensics team in the Polymers and Coatings Group, MST-7. He graduated from the University of Toledo, aerogels, carbon fiber composites, damaged materials, and low density materials examining defects

413

Filiramoporina kretaphilia-a new genus and species of bifoliate tubulobryozoan (Ectoprocta) from the Lower Permian Wreford Megacyclothem of Kansas  

E-Print Network [OSTI]

and TZAD, longitudinal and transverse zooecial aperture diameters; MST, mesotheca thickness; MWZ/ and MWZN, major and minor transverse axes of zoarial branch; NCD, minimum cystopore diameter in tangential section; RN, number of zooecial ranges; TP, exozone..., 1964, p. 934), similar to endozonal zooecial walls in microstructure, relatively thin (0.01-0.02 mm, MST, m of Karklins, 1969). tangential sections (Pl. 1, fig. 3,5,8). All zooecia of similar size and shape (no heterozooecia such as mesopores...

Fry, H. C.; Cuffey, Roger J.

1976-07-15T23:59:59.000Z

414

Thermochemical generation of hydrogen and oxygen from water  

DOE Patents [OSTI]

A thermochemical cyclic process for the production of hydrogen exploits the reaction between sodium manganate (NaMnO.sub.2) and titanium dioxide (TiO.sub.2) to form sodium titanate (Na.sub.2 TiO.sub.3), manganese (II) titanate (MnTiO.sub.3) and oxygen. The titanate mixture is treated with sodium hydroxide, in the presence of steam, to form sodium titanate, sodium manganate (III), water and hydrogen. The sodium titanate-manganate (III) mixture is treated with water to form sodium manganate (III), titanium dioxide and sodium hydroxide. Sodium manganate (III) and titanium dioxide are recycled following dissolution of sodium hydroxide in water.

Robinson, Paul R. (Knoxville, TN); Bamberger, Carlos E. (Oak Ridge, TN)

1981-01-01T23:59:59.000Z

415

Thermochemical generation of hydrogen and oxygen from water  

DOE Patents [OSTI]

A thermochemical cyclic process for the production of hydrogen exploits the reaction between sodium manganate (NaMnO.sub.2) and titanium dioxide (TiO.sub.2) to form sodium titanate (Na.sub.2 TiO.sub.3), manganese (II) titanate (MnTiO.sub.3) and oxygen. The titanate mixture is treated with sodium hydroxide, in the presence of steam, to form sodium titanate, sodium manganate (III), water and hydrogen. The sodium titanate-manganate (III) mixture is treated with water to form sodium manganate (III), titanium dioxide and sodium hydroxide. Sodium manganate (III) and titanium dioxide are recycled following dissolution of sodium hydroxide in water.

Robinson, Paul R. (Knoxville, TN); Bamberger, Carlos E. (Oak Ridge, TN)

1982-01-01T23:59:59.000Z

416

Thermochemical generation of hydrogen and oxygen from water. [NaMnO/sub 2/ and TiO/sub 2/  

DOE Patents [OSTI]

A thermochemical cyclic process for the production of hydrogen exploits the reaction between sodium manganate (NaMnO/sub 2/) and titanium dioxide (TiO/sub 2/) to form sodium titanate (Na/sub 2/TiO/sub 3/), manganese (II) titanate (MnTiO/sub 3/) and oxygen. The titanate mixture is treated with sodium hydroxide, in the presence of steam, to form sodium titanate, sodium manganate (III), water and hydrogen. The sodium titanate-manganate (III) mixture is treated with water to form sodium manganate (III), titanium dioxide and sodium hydroxide. Sodium manganate (III) and titanium dioxide are recycled following dissolution of sodium hydroxide in water.

Robinson, P.R.; Bamberger, C.E.

1980-02-08T23:59:59.000Z

417

CRUCIBLE TESTING OF TANK 48 RADIOACTIVE WASTE SAMPLE USING FBSR TECHNOLOGY FOR ORGANIC DESTRUCTION  

SciTech Connect (OSTI)

The purpose of crucible scale testing with actual radioactive Tank 48H material was to duplicate the test results that had been previously performed on simulant Tank 48H material. The earlier crucible scale testing using simulants was successful in demonstrating that bench scale crucible tests produce results that are indicative of actual Fluidized Bed Steam Reforming (FBSR) pilot scale tests. Thus, comparison of the results using radioactive Tank 48H feed to those reported earlier with simulants would then provide proof that the radioactive tank waste behaves in a similar manner to the simulant. Demonstration of similar behavior for the actual radioactive Tank 48H slurry to the simulant is important as a preliminary or preparation step for the more complex bench-scale steam reformer unit that is planned for radioactive application in the Savannah River National Laboratory (SRNL) Shielded Cells Facility (SCF) later in 2008. The goals of this crucible-scale testing were to show 99% destruction of tetraphenylborate and to demonstrate that the final solid product produced is sodium carbonate. Testing protocol was repeated using the specifications of earlier simulant crucible scale testing, that is sealed high purity alumina crucibles containing a pre-carbonated and evaporated Tank 48H material. Sealing of the crucibles was accomplished by using an inorganic 'nepheline' sealant. The sealed crucibles were heat-treated at 650 C under constant argon flow to inert the system. Final product REDOX measurements were performed to establish the REDuction/OXidation (REDOX) state of known amounts of added iron species in the final product. These REDOX measurements confirm the processing conditions (pyrolysis occurring at low oxygen fugacity) of the sealed crucible environment which is the environment actually achieved in the fluidized bed steam reformer process. Solid product dissolution in water was used to measure soluble cations and anions, and to investigate insoluble fractions of the product solids. Radioanalytical measurements were performed on the Tank 48H feed material and on the dissolved products in order to estimate retention of Cs-137 in the process. All aspects of prior crucible scale testing with simulant Tank 48H slurry were demonstrated to be repeatable with the actual radioactive feed. Tetraphenylborate destruction was shown to be >99% and the final solid product is sodium carbonate crystalline material. Less than 10 wt% of the final solid products are insoluble components comprised of Fe/Ni/Cr/Mn containing sludge components and Ti from monosodium titanate present in Tank 48H. REDOX measurements on the radioactive solid products indicate a reducing atmosphere with extremely low oxygen fugacity--evidence that the sealed crucible tests performed in the presence of a reductant (sugar) under constant argon purge were successful in duplicating the pyrolysis reactions occurring with the Tank 48H feed. Soluble anion measurements confirm that using sugar as reductant at 1X stoichiometry was successful in destroying nitrate/nitrite in the Tank 48H feed. Radioanalytical measurements indicate that {approx}75% of the starting Cs-137 is retained in the solid product. No attempts were made to analyze/measure other potential Cs-137 in the process, i.e., as possible volatile components on the inner surface of the alumina crucible/lid or as offgas escaping the sealed crucible. The collective results from these crucible scale tests on radioactive material are in good agreement with simulant testing. Crucible scale processing has been shown to duplicate the complex reactions of an actual fluidized bed steam reformer. Thus this current testing should provide a high degree of confidence that upcoming bench-scale steam reforming with radioactive Tank 48H slurry will be successful in tetraphenylborate destruction and production of sodium carbonate product.

Hammond, C; William Pepper, W

2008-09-19T23:59:59.000Z

418

CRUCIBLE TESTING OF TANK 48H RADIOACTIVEWASTE SAMPLE USING FLUIDIZED BED STEAMREFORMING TECHNOLOGY FOR ORGANICDESTRUCTION  

SciTech Connect (OSTI)

The purpose of crucible scale testing with actual radioactive Tank 48H material was to duplicate the test results that had been previously performed on simulant Tank 48H material. The earlier crucible scale testing using simulants was successful in demonstrating that bench scale crucible tests produce results that are indicative of actual Fluidized Bed Steam Reforming (FBSR) pilot scale tests. Thus, comparison of the results using radioactive Tank 48H feed to those reported earlier with simulants would then provide proof that the radioactive tank waste behaves in a similar manner to the simulant. Demonstration of similar behavior for the actual radioactive Tank 48H slurry to the simulant is important as a preliminary or preparation step for the more complex bench-scale steam reformer unit that is planned for radioactive application in the Savannah River National Laboratory (SRNL) Shielded Cells Facility (SCF) later in 2008. The goals of this crucible-scale testing were to show 99% destruction of tetraphenylborate and to demonstrate that the final solid product produced is sodium carbonate. Testing protocol was repeated using the specifications of earlier simulant crucible scale testing, that is sealed high purity alumina crucibles containing a pre-carbonated and evaporated Tank 48H material. Sealing of the crucibles was accomplished by using an inorganic 'nepheline' sealant. The sealed crucibles were heat-treated at 650 C under constant argon flow to inert the system. Final product REDOX measurements were performed to establish the REDuction/OXidation (REDOX) state of known amounts of added iron species in the final product. These REDOX measurements confirm the processing conditions (pyrolysis occurring at low oxygen fugacity) of the sealed crucible environment which is the environment actually achieved in the fluidized bed steam reformer process. Solid product dissolution in water was used to measure soluble cations and anions, and to investigate insoluble fractions of the product solids. Radioanalytical measurements were performed on the Tank 48H feed material and on the dissolved products in order to estimate retention of Cs-137 in the process. All aspects of prior crucible scale testing with simulant Tank 48H slurry were demonstrated to be repeatable with the actual radioactive feed. Tetraphenylborate destruction was shown to be >99% and the final solid product is sodium carbonate crystalline material. Less than 10 wt% of the final solid products are insoluble components comprised of Fe/Ni/Cr/Mn containing sludge components and Ti from monosodium titanate present in Tank 48H. REDOX measurements on the radioactive solid products indicate a reducing atmosphere with extremely low oxygen fugacity--evidence that the sealed crucible tests performed in the presence of a reductant (sugar) under constant argon purge were successful in duplicating the pyrolysis reactions occurring with the Tank 48H feed. Soluble anion measurements confirm that using sugar as reductant at 1X stoichiometry was successful in destroying nitrate/nitrite in the Tank 48H feed. Radioanalytical measurements indicate that {approx}75% of the starting Cs-137 is retained in the solid product. No attempts were made to analyze/measure other potential Cs-137 in the process, i.e., as possible volatile components on the inner surface of the alumina crucible/lid or as offgas escaping the sealed crucible. The collective results from these crucible scale tests on radioactive material are in good agreement with simulant testing. Crucible scale processing has been shown to duplicate the complex reactions of an actual fluidized bed steam reformer. Thus this current testing should provide a high degree of confidence that upcoming bench-scale steam reforming with radioactive Tank 48H slurry will be successful in tetraphenylborate destruction and production of sodium carbonate product.

Crawford, C

2008-07-31T23:59:59.000Z

419

Electrode materials and lithium battery systems  

DOE Patents [OSTI]

A material comprising a lithium titanate comprising a plurality of primary particles and secondary particles, wherein the average primary particle size is about 1 nm to about 500 nm and the average secondary particle size is about 1 .mu.m to about 4 .mu.m. In some embodiments the lithium titanate is carbon-coated. Also provided are methods of preparing lithium titanates, and devices using such materials.

Amine, Khalil (Downers Grove, IL); Belharouak, Ilias (Westmont, IL); Liu, Jun (Naperville, IL)

2011-06-28T23:59:59.000Z

420

Buffer layer for thin film structures  

DOE Patents [OSTI]

A composite structure including a base substrate and a layer of a mixture of strontium titanate and strontium ruthenate is provided. A superconducting article can include a composite structure including an outermost layer of magnesium oxide, a buffer layer of strontium titanate or a mixture of strontium titanate and strontium ruthenate and a top-layer of a superconducting material such as YBCO upon the buffer layer.

Foltyn, Stephen R.; Jia, Quanxi; Arendt, Paul N.; Wang, Haiyan

2010-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Buffer layer for thin film structures  

DOE Patents [OSTI]

A composite structure including a base substrate and a layer of a mixture of strontium titanate and strontium ruthenate is provided. A superconducting article can include a composite structure including an outermost layer of magnesium oxide, a buffer layer of strontium titanate or a mixture of strontium titanate and strontium ruthenate and a top-layer of a superconducting material such as YBCO upon the buffer layer.

Foltyn, Stephen R.; Jia, Quanxi; Arendt, Paul N.; Wang, Haiyan

2006-10-31T23:59:59.000Z

422

Bounds on the thermodynamical properties of the fluid envelope of a planet based upon its radiative budget at the top of the atmosphere: theory and results for Earth, Mars, Titan, and  

E-Print Network [OSTI]

1 Bounds on the thermodynamical properties of the fluid envelope of a planet based upon its in the atmospheric masses. The possibility of providing constraints to the 3D dynamics of the fluid envelope based into mechanical energy like a thermal engine and generates entropy by irreversible processes. When the external

Lucarini, Valerio

423

atmosphere revitalization system: Topics by E-print Network  

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

Mars, Venus and Titan. Atmospheric electricity has controversially been implicated in climate on Earth; here, a comparative approach is employed to review the role of...

424

Energy Efficiency Improvement and Cost Saving Oportunities for the Concrete Industry  

E-Print Network [OSTI]

of energy management: energy audits/assessments, energyto Titan America, energy audits conducted in concrete plantsmanagement programs Energy audit Energy teams Employee

Kermeli, Katerina

2013-01-01T23:59:59.000Z

425

SIAG/OPT Views-and-News pdfsubject - Optimization Online  

E-Print Network [OSTI]

these simulation tools in order to systematize and automate decisions ..... the Optimization of Chemical Processes Described by. Large Sparse ...... http://titan.

2003-04-22T23:59:59.000Z

426

1  

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

Flipping the switch on magnetism in strontium titanate March 27, 2014 Semiconductor material can be magnetized with light, suggesting new technology opportunities LOS ALAMOS, N.M.,...

427

Ceramic composition for immobilization of actinides  

DOE Patents [OSTI]

Disclosed is a ceramic composition for the immobilization of actinides, particularly uranium and plutonium. The ceramic is a titanate material comprising pyrochlore, brannerite and rutile.

Ebbinghaus, Bartley B. (Livermore, CA); Van Konynenburg, Richard A. (Livermore, CA); Vance, Eric R. (Kirrawee, AU); Stewart, Martin W. (Barden Ridge, AU); Jostsons, Adam (Eastwood, AU); Allender, Jeffrey S. (North Augusta, SC); Rankin, David Thomas (Aiken, SC)

2000-01-01T23:59:59.000Z

428

Funds Awarded to Historically Black Colleges and Universities...  

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

- Post Combustion Carbon Capture Using Polyethylenimine Functionalized Titanate Nanotubes. Faced with the challenge of producing effective and economical materials for CO2...

429

NETL F 451.1/1-1, Categorical Exclusion Designation Form  

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

Post Combustion Carbon Capture Using Polyethylenimine (PEI) Functionalized Titanate Nanotubes The overall objective of the proposed work is to develop a novel nanomaterial to...

430

E-Print Network 3.0 - atmospheric particles analysis Sample Search...  

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

of Atmospheres by Houghton Energetic Charged-Particle Interactions with Atmospheres... or analysis of Cassini Data 12;Ions Electrons N2 96% CH4 4% + ? Titan's Atmosphere...

431

JOURNAL DE PHYSIQUE Co//oqueC2, suppiement au n O 3, Tome 40, mars 1979, page C2-367  

E-Print Network [OSTI]

, France R6sum6.- Sept chalcog6nures lamellaires de fer et de titane, non stoechiom6triques, ont 6t6 6tu

Paris-Sud XI, Université de

432

--No Title--  

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

Fred Strohl Communications 865.574.4165 Energy efficient video game technology in Titan supercomputer Listen to the audio OAK RIDGE, Tenn., Dec. 27, 2012 - Oak Ridge National...

433

E-Print Network 3.0 - asymmetric tetradentate ligands Sample...  

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

Summary: Tetradentate Ligand Jun Qiu, Cheng Guo, and Xumu Zhang* Department of Chemistry, The Pennsylvania State... sulfonamides3 ). We have recently studied a titanate...

434

aluminium oxide substrates: Topics by E-print Network  

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

Huang, Shih-Yu 2009-01-01 99 Fabrication And Characterization Of Barium Titanate Thin Film On Polycrystalline Nickel Substrate. Open Access Theses and Dissertations Summary:...

435

E-Print Network 3.0 - acute zonal occult Sample Search Results  

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

alter the shape of isopotential surfaces, and occultations have produced zonal wind estimates on several... Spatially Resolved Observations of an Upcoming Titan ......

436

Russia-China MIlitary Arms Trade.  

E-Print Network [OSTI]

??To observers who are not indifferent toward Russia, the trend of Russias foreign policy clearly is disquieting, if not alarming. The titanic efforts made by (more)

Vitaly, Vasilev

2008-01-01T23:59:59.000Z

437

E-Print Network 3.0 - adsorbing uranium compounds Sample Search...  

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

compound, davidite-brannerite-absite type of uranium titanates and the euxenite... Uranium geology and mining Ranger 1 ... Source: Uppsala Universitet, Department of...

438

Mass accretion rates in self-regulated disks of T Tauri stars  

E-Print Network [OSTI]

We have studied numerically the evolution of protostellar disks around intermediate and upper mass T Tauri stars (0.25 M_sun < M_st < 3.0 M_sun) that have formed self-consistently from the collapse of molecular cloud cores. In the T Tauri phase, disks settle into a self-regulated state, with low-amplitude nonaxisymmetric density perturbations persisting for at least several million years. Our main finding is that the global effect of gravitational torques due to these perturbations is to produce disk accretion rates that are of the correct magnitude to explain observed accretion onto T Tauri stars. Our models yield a correlation between accretion rate M_dot and stellar mass M_st that has a best fit M_dot \\propto M_st^{1.7}, in good agreement with recent observations. We also predict a near-linear correlation between the disk accretion rate and the disk mass.

E. I. Vorobyov; Shantanu Basu

2008-02-15T23:59:59.000Z

439

Neutral Particle Analyzer for Studies of Fast Ion Population in Plasma  

E-Print Network [OSTI]

Advanced neutral particles analyzer for plasma diagnostic with possibility of simultaneous measurements of energy distributions of D and H ions has developed in the Budker Institute of Nuclear Physics. The analyzer was used in two plasma facilities with injection of fast neutrals - on the MST reversed field pinch (University of Wisconsin) and the field reversed configuration C-2 (Tri Alpha Energy). In this paper, the design of the analyzer, calculation of efficiency of registration, results of analyzer calibration and experimental results from MST and C-2 experiments are presented

Polosatkin, S; Davydenko, V; Clary, R; Fiksel, G; Ivanov, A; Kapitonov, V; Liu, D; Mishagin, V; Tiunov, M; Voskoboynikov, R

2011-01-01T23:59:59.000Z

440

Simulations of LH coupling in the Madison Symmetric Torus Reversed Field Pinch  

SciTech Connect (OSTI)

Simulations using several codes are being performed in support of the LH experiment in the Madison Symmetric Torus (MST) Reversed Field Pinch (RFP). Due to the special requirements of the MST RFP configuration (tight-fitting conducting shell in which only minimal portholes can be tolerated), a novel interdigital line slow-wave launch structure is used, mounted below the mid plane on the inboard side. The unusual configuration made it necessary to modify the main RF coupling code, RANT3D/AORSA1D-H, which was primarily developed for tokamak simulations. Preliminary results will be presented.

Carlsson, J.; Smithe, D. [Tech-X Corporation, Boulder USA (United States); Cartert, M. [Oak Ridge National Laboratory, Oak Ridge (United States); Burke, D.; Kaufman, M.; Goetz, J. [University of Wisconsin, Madison (United States)

2007-09-28T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Low temperature aqueous desulfurization of coal  

DOE Patents [OSTI]

This invention describes a chemical process for desulfurizing coal, especially adaptable to the treatment of coal-water slurries, at temperatures as low as ambient, comprising treating the coal with aqueous titanous chloride whereby hydrogen sulfide is liberated and the desulfurized coal is separated with the conversion of titanous chloride to titanium oxides.

Slegeir, William A. (Hampton Bays, NY); Healy, Francis E. (Massapequa, NY); Sapienza, Richard S. (Shoreham, NY)

1985-01-01T23:59:59.000Z

442

This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research  

E-Print Network [OSTI]

). Here we report investigations on ME effects in bilayers and trilayers of nickel electrodeposited onto samples of lead zirconium titanate and nickel films D.V. Chashina , Y.K. Fetisova , E.V. Tafintsevaa , G and radial modes are reported in structures consisting of nickel films deposited onto lead zirconate titanate

Srinivasan, Gopalan

443

Low temperature aqueous desulfurization of coal  

DOE Patents [OSTI]

This invention describes a chemical process for desulfurizing coal, especially adaptable to the treatment of coal-water slurries, at temperatures as low as ambient, comprising treating the coal with aqueous titanous chloride whereby hydrogen sulfide is liberated and the desulfurized coal is separated with the conversion of titanous chloride to titanium oxides.

Slegeir, W.A.; Healy, F.E.; Sapienza, R.S.

1985-04-18T23:59:59.000Z

444

TSU Space Program Student Engagement Report  

E-Print Network [OSTI]

TSU Space Program Student Engagement Report FY 2012-2013 Mission Statement The Titan Student Centers Governing Board allocates space in the Titan Student Union each semester to give recognized clubs and organizations space to plan events, conduct small meetings and store club/organization property. Program

de Lijser, Peter

445

NASA Launches ATREX Space Network to Begin New Design Phase  

E-Print Network [OSTI]

Design Phase - 8 Dual Frequency Radar Arrives at Goddard - 9 Goddard Community Visitor Center Hosts TitanNASA Launches ATREX Pg 3 Space Network to Begin New Design Phase Pg 8 Visitor Center Hosts Titan://www.nasa.gov/centers/goddard/news/goddard-view.html Managing Editor: Trusilla Steele Editor: John M. Putman News items for publication in Goddard View must

Christian, Eric

446

Hydrothermal synthesis of nanocubes of sillenite type compounds for photovoltaic applications and solar energy conversion of carbon dioxide to fuels  

DOE Patents [OSTI]

The present invention relates to formation of nanocubes of sillenite type compounds, such as bismuth titanate, i.e., Bi.sub.12TiO.sub.20, nanocubes, via a hydrothermal synthesis process, with the resulting compound(s) having multifunctional properties such as being useful in solar energy conversion, environmental remediation, and/or energy storage, for example. In one embodiment, a hydrothermal method is disclosed that transforms nanoparticles of TiO.sub.2 to bismuth titanate, i.e., Bi.sub.12TiO.sub.20, nanocubes, optionally loaded with palladium nanoparticles. The method includes reacting titanium dioxide nanotubes with a bismuth salt in an acidic bath at a temperature sufficient and for a time sufficient to form bismuth titanate crystals, which are subsequently annealed to form bismuth titanate nanocubes. After annealing, the bismuth titanate nanocubes may be optionally loaded with nano-sized metal particles, e.g., nanosized palladium particles.

Subramanian, Vaidyanathan; Murugesan, Sankaran

2014-04-29T23:59:59.000Z

447

Advanced Materials Characterization Laboratory User Faculty Authorization Form  

E-Print Network [OSTI]

-341-4393 Hitachi S-4700 B-18D McNutt Dr. Clarissa Wisner cvierret@mst.edu 573-341-4393 Helios Nanolab 600 B-18A Mc blanks that are marked with a * Notes concerning usage of the instrument - if you have a problem, please

Missouri-Rolla, University of

448

Implications of the FESAC Fusion Development Path Study for  

E-Print Network [OSTI]

Study The goal of the plan is operation of a US demonstration power plant (Demo), which will enable electric power production, and ultimately it will demonstrate the commercial practicality of fusion power Studies 47 MFE Detail and Dependencies Theory, Simulation and Basic Plasma Science MST & NSTX 2nd New MFE

Princeton Plasma Physics Laboratory

449

Materials Corrosion and Mitigation Strategies for APT: End of Year Report, FY '96  

E-Print Network [OSTI]

Materials Corrosion and Mitigation Strategies for APT: End of Year Report, FY '96 R. Scott Lillard, Darryl P. Butt Materials Corrosion and Environmental Effects Laboratory MST-6, Metallurgy Los Alamos accomplishment in FY '96 was the design and fabrication of the corrosion probes to be used "In Beam" during

450

Materials Corrosion and Mitigation Strategies for APT, End of FY '97 Report  

E-Print Network [OSTI]

Materials Corrosion and Mitigation Strategies for APT, End of FY '97 Report: I. Inconel 718 In-Beam Corrosion Rates from the '97 A6 Irradiation R. Scott Lillard, Donald L. Pile, Darryl P. Butt Materials Corrosion & Environmental Effects Lab MST-6, Metallurgy Group Los Alamos National Laboratory, Los Alamos NM

451

The Corrosion of Materials in Spallation Neutron Sources R. Scott Lillard, Darryl P. Butt  

E-Print Network [OSTI]

1 The Corrosion of Materials in Spallation Neutron Sources R. Scott Lillard, Darryl P. Butt Materials Corrosion and Environmental Effects Lab Materials Science and Technology Division, MST-6 Los current efforts to measure the real-time corrosion rates of Alloy 718 (718) during 800 MeV proton

452

Materials Corrosion and Mitigation Strategies for APT: Using Solution Resistivity as an Estimate of Tungsten Corrosion  

E-Print Network [OSTI]

Materials Corrosion and Mitigation Strategies for APT: Using Solution Resistivity as an Estimate of Tungsten Corrosion in Spallation Neutron Target Cooling Loops R. Scott Lillard, Darryl P. Butt Materials Corrosion and Environmental Effects Laboratory MST-6, Metallurgy Los Alamos National Laboratory Los Alamos

453

Materials Corrosion and Mitigation Strategies for APT, Weapons Neutron Research Facility Experiments  

E-Print Network [OSTI]

Materials Corrosion and Mitigation Strategies for APT, Weapons Neutron Research Facility Experiments: The Effects of 800 MeV Proton Irradiation on the Corrosion of Tungsten, Tantalum, Stainless Steel, and Gold R. Scott Lillard, Darryl P. Butt Materials Corrosion & Environmental Effects Laboratory MST-6

454

The Susceptibility of Materials in Spallation Neutron Source Target and Blanket Cooling Loops to Corrosion  

E-Print Network [OSTI]

to Corrosion R. Scott Lillard, Darryl P. Butt Materials Corrosion and Environmental Effects Lab MST-6 cooling loops to corrosion. To simulate the environment that materials may be exposed to in a target of exposing corrosion samples to an 800 MeV proton beam at currents upwards of 1 mA was constructed. This loop

455

Materials Corrosion and Mitigation Strategies for APT, End of FY '97 Report  

E-Print Network [OSTI]

Materials Corrosion and Mitigation Strategies for APT, End of FY '97 Report: II. Out-of-Beam Corrosion Rates and Water Analysis from the '97 A6 Irradiation R. Scott Lillard, Donald L. Pile, Darryl P. Butt Materials Corrosion & Environmental Effects Lab MST-6, Metallurgy Group Los Alamos National

456

The Corrosion of Materials in Water Irradiated by 800 MeV Protons  

E-Print Network [OSTI]

1 The Corrosion of Materials in Water Irradiated by 800 MeV Protons R.S. Lillard, D.L. PileW , D.P. Butt* Materials Corrosion and Environmental Effects Lab Materials Science and Technology Division, MST the real-time corrosion rates for Alloy 718, stainless steels 304L and 316L nuclear grade, aluminum alloys

457

Calibration of an advanced neutral particle analyzer for the Madison Symmetric Torus reversed-field pinch  

SciTech Connect (OSTI)

A new E Parallel-To B neutral particle analyzer, which has recently been installed on Madison Symmetric Torus (MST) reversed-field pinch (RFP), has now been calibrated, allowing the measurement of the fast ion density and energy distribution. This diagnostic, dubbed the advanced neutral particle analyzer (ANPA), can simultaneously produce time resolved measurements of the efflux of both hydrogen and deuterium ions from the plasma over a 35 keV energy range with an energy resolution of 2-4 keV and a time resolution of 10 {mu}s. These capabilities are needed to measure both majority ion heating that occurs during magnetic reconnection events in MST and the behavior of the fast ions from the 1 MW hydrogen neutral beam injector on MST. Calibration of the ANPA was performed using a custom ion source that resides in the flight tube between the MST and the ANPA. In this work, the ANPA will be described, the calibration procedure and results will be discussed, and initial measurements of the time evolution of 25 keV neutral beam injection-born fast ions will be presented.

Reusch, J. A.; Anderson, J. K.; Eilerman, S. [University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Belykh, V.; Polosatkin, S. [Budker Institute of Nuclear Physics SB RAS, Novosibirsk (Russian Federation); Liu, D. [University of California-Irvine, Irvine, California 92697 (United States); Fiksel, G. [University of Rochester, Rochester, New York 14623 (United States)

2012-10-15T23:59:59.000Z

458

Improved High Maximum Stable Throughput FCFS Tree Algorithms with Interference Cancellation  

E-Print Network [OSTI]

Middelheimlaan 1 B-2020 Antwerp, Belgium ABSTRACT Tree algorithms form a well researched class of collision res-detection mechanisms). In point-to- multipoint access networks, such as DVB-RCS satellite net- works and hybrid, Mikhailov and Vvedenskaya [12]. These algorithms were the first to have a provable MST above zero. Afterward

459

Quantitative linear and nonlinear Resonance Inspection Techniques and Analysis for material characterization: Application to concrete thermal damage.  

E-Print Network [OSTI]

characterization: Application to concrete thermal damage. C. Payan1 , T.J. Ulrich2 , P.Y. Le Bas2 , T. Saleh3 , M-17, Los Alamos NM USA 3 Los Alamos National Laboratory, MST-16, Los Alamos NM USA 4 Electrical Power assume the measured amplitude to be proportional to the strain amplitude which drives nonlinear phenomena

Paris-Sud XI, Université de

460

Adaptive architectures for peak power management  

E-Print Network [OSTI]

iq fq ialu falu ldst ic dc ipr fpr g721d mesa-texgen epiciq fq ialu falu ldst ic dc ipr fpr perim big mst treeaddNas iq fq ialu falu ldst ic dc ipr fpr mg.big ft.big sp.big

Kontorinis, Vasileios

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "monosodium titanate mst" 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

Physics and Astronomy The Wiess School of Natural Sciences  

E-Print Network [OSTI]

257 Physics and Astronomy The Wiess School of Natural Sciences Degrees Offered: BA, BS, MST, MS, PhD The Department of Physics and Astronomy offers undergraduate and graduate programs for a wide range of interests. The bachelor of arts degrees in physics and astronomy are suitable for students who wish to obtain a broad

Richards-Kortum, Rebecca

462

Physics and Astronomy The Wiess School of Natural Sciences  

E-Print Network [OSTI]

Physics and Astronomy The Wiess School of Natural Sciences Degrees Offered: BA, BS, MST, MS, PhD The Department of Physics and Astronomy offers undergraduate and graduate programs for a wide range of interests. The bachelor of arts degrees in physics and astronomy are suitable for students who wish to obtain a broad

Richards-Kortum, Rebecca

463

Physics and Astronomy The Wiess School of Natural Sciences  

E-Print Network [OSTI]

1 Physics and Astronomy The Wiess School of Natural Sciences Degrees Offered: BA, BS, MST, MS, PhD The Department of Physics and Astronomy offers undergraduate and graduate programs for a wide range of interests. The bachelor of arts degrees in physics and astronomy are suitable for students who wish to obtain a broad

Richards-Kortum, Rebecca

464

Physics and Astronomy The Wiess School of Natural Sciences  

E-Print Network [OSTI]

246 Physics and Astronomy The Wiess School of Natural Sciences Degrees Offered: BA, BS, MST, MS, PhD The Department of Physics and Astronomy offers undergraduate and graduate programs for a wide range of interests. The bachelor of arts degrees in physics and astronomy are suitable for students who wish to obtain a broad

Richards-Kortum, Rebecca

465

Physics and Astronomy The Wiess School of Natural Sciences  

E-Print Network [OSTI]

234 Physics and Astronomy The Wiess School of Natural Sciences Degrees Offered: BA, BS, MST, MS, PhD The Department of Physics andAstronomy offers undergraduate and graduate pro- grams for a wide range of interests.The bachelor of arts degrees in physics and in astronomy are suitable for students who wish to obtain a broad

Richards-Kortum, Rebecca

466

Physics and Astronomy The Wiess School of Natural Sciences  

E-Print Network [OSTI]

228 Physics and Astronomy The Wiess School of Natural Sciences Degrees Offered: BA, BS, MST, MS, PhD The Department of Physics andAstronomy offers undergraduate and graduate pro- grams for a wide range of interests.The bachelor of arts degrees in physics and in astronomy are suitable for students who wish to obtain a broad

Richards-Kortum, Rebecca

467

Pack, Grossberg, and Mingolla 0 A Neural Model of Smooth Pursuit Control and Motion Perception  

E-Print Network [OSTI]

movements, visual cortex, MST, motion, optokinetic nystagmus, target tracking, perception ¶Supported in partPack, Grossberg, and Mingolla 0 A Neural Model of Smooth Pursuit Control and Motion Perception by the Air Force Office of Scientific Research (AFOSR F49620­92­J­0334) the Defense Advanced Research

Grossberg, Stephen

468

Pack, Grossberg, and Mingolla 0 A Neural Model of Smooth Pursuit Control and Motion Perception  

E-Print Network [OSTI]

movements, visual cortex, MST, motion, optokinetic nystagmus, target tracking, perception ¶Supported in partPack, Grossberg, and Mingolla 0 A Neural Model of Smooth Pursuit Control and Motion Perception by the Air Force Office of Scientific Research (AFOSR F49620-92-J-0334) the Defense Advanced Research

Grossberg, Stephen

469

NH 4-H Youth Group Enrollment Form Name of Program  

E-Print Network [OSTI]

Yes No Farm Rural Town 10K-50K Suburb City 50K+ Hispanic Non-Hispanic White White Black Black American - ATV's (NSE1) Other Science /Technology (MST1) Woodworking (MWW1) Wind Power (MWP1) GPS (MGP1) Electricity/Energy (MEL1) Computers (MCS1) Bicycle Safety (MBS1) Aerospace & Rocketry (MAR1) Science

New Hampshire, University of

470

Office of Small and Disadvantaged Business Utilization Events...  

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

November 2014 < prev next > Sun Mon Tue Wed Thu Fri Sat 26 27 28 29 30 31 1 2 3 4 5 6 7 8 USDA Rural Small Business Connection Event 8:30AM to 4:00PM MST 2014 National Small...

471

Enhancing Building Performance Through More Responsive Maintenance System  

E-Print Network [OSTI]

forth). For example, installing a water heater needs a plumber and electrician to complete the job in a traditional maintenance system. With MST principle, this work order can be done by one technician instead of two. In this way work orders...

Alsudairi, A. A.

2012-01-01T23:59:59.000Z

472

Quantum dynamics and macroscopic quantum tunneling of two weakly coupled condensates  

E-Print Network [OSTI]

We study the quantum dynamics of a Bose Josephson junction(BJJ) made up of two coupled Bose-Einstein condensates. Apart from the usual ac Josephson oscillations, two different dynamical states of BJJ can be observed by tuning the inter-particle interaction strength, which are known as '$\\pi$-oscillation' with relative phase $\\pi$ between the condensates and 'macroscopic self-trapped' (MST) state with finite number imbalance. By choosing appropiate intial state we study above dynamical branches quantum mechanically and compare with classical dynamics. The stability region of the '$\\pi$-oscillation' is separated from that of 'MST' state at a critical coupling strength. Also a significant change in the energy spectrum takes place above the critical coupling strength, and pairs of (quasi)-degenerate excited states appear. The original model of BJJ can be mapped on to a simple Hamiltonian describing quantum particle in an 'effective potential' with an effective Planck constant. Different dynamical states and degenerate excited states in the energy spectrum can be understood in this 'effective potential' approach. Also possible novel quantum phenomena like 'macroscopic quantum tunneling'(MQT) become evident from the simple picture of 'effective potential'. We study decay of metastable '$\\pi$-oscillation' by MQT through potential barrier. The doubly degenerate excited states in the energy spectrum are associated with the classically degenerate MST states with equal and opposite number imbalance. We calculate the energy splitting between these quasi-degenerate excited states due to MQT of the condensate between classically degenerate MST states.

Ren John Kerkdyk; S. Sinha

2012-09-24T23:59:59.000Z

473

Bridging Nonliving and Living Steen Rasmussen1,2  

E-Print Network [OSTI]

,3 1 Self-Organizing Systems EES-6, MS-T003 Los Alamos National Laboratory Los Alamos, NM 87545 steen@lanl.gov nilsson@lanl.gov 2 Santa Fe Institute 1399 Hyde Park Road Santa Fe, NM 87506 3 Bioscience Division Argonne

Rasmussen, Steen

474

Influence of interfacial dislocations on hysteresis loops of ferroelectric films  

E-Print Network [OSTI]

1 1 Department of Materials Science and Engineering, Pennsylvania State University, University Park, Richland, Washington 99354, USA 3 Los Alamos National Laboratory, MST-8, MS G755, Los Alamos, New Mexico 87545, USA 4 Los Alamos National Laboratory, T-11, MS B262, Los Alamos, New Mexico 87545, USA 5 Los

Chen, Long-Qing

475

Prediction of ferroelectricity in BaTiO3/SrTiO3 superlattices with domains Department of Materials Science and Engineering, The Pennsylvania State University, University Park,  

E-Print Network [OSTI]

of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA and MPA-STC, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA S. Y. Hu MST-8, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA D. Tenne Department of Physics, Boise State

Eom, Chang Beom

476

Annales Geophysicae (2003) 21: 10471055 c European Geosciences Union 2003 Geophysicae  

E-Print Network [OSTI]

Kiruna, Sweden Received: 12 April 2002 ­ Revised: 16 August 2002 ­ Accepted: 1 October 2002 Abstract with elevation angles of 20­60. Echo power ( 16 dB), Doppler velocity (between ­30 and + 30 m s-1) and spectral gravity waves. When the HF radar detected the echoes, a vertical incidence MST radar, located at Esrange

Paris-Sud XI, Université de

477

Graphene oxide based CdSe photocatalysts: Synthesis, characterization and comparative photocatalytic efficiency of rhodamine B and industrial dye  

SciTech Connect (OSTI)

Highlights: ? CdSegraphene is synthesized by hydrothermal method. ? Three molar solutions of CdSe were used making three different composites. ? RhB and Texbrite MST-L were used as sample dye solutions. ? Texbrite MST-L is photo degraded in visible light. ? UV-spectroscopic analysis was done to measure degradation. - Abstract: CdSegraphene composites were prepared using simple hydrothermal method where the graphene surface was modified using different molar solutions of cadmium selenide (CdSe) in aqueous media. The characterization of CdSegraphene composites were studied by X-ray diffraction (XRD), energy dispersive X-ray (EDX), scanning electron microscope (SEM), and with transmission electron microscope (TEM). The catalytic activities of CdSe-composites were evaluated by degradation of rhodamine B (RhB) and commercial industrial dye Texbrite MST-L (TXT-MST) with fixed concentration. The degradation was observed by the decrease in the absorbance peak studied by UV spectrophotometer. The decrease in the dye concentration indicated catalytic degradation effect by CdSegraphene composites.

Ghosh, Trisha [Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, 356-706 (Korea, Republic of); Lee, Jeong-Ho [Dasan Linc Educational Development Institute, Dankook University, Cheonan, Chungnam, 330-714 (Korea, Republic of); Meng, Ze-Da; Ullah, Kefayat; Park, Chong-Yeon; Nikam, Vikram [Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, 356-706 (Korea, Republic of); Oh, Won-Chun, E-mail: wc_oh@hanseo.ac.kr [Department of Advanced Materials Science and Engineering, Hanseo University, Chungnam, 356-706 (Korea, Republic of)

2013-03-15T23:59:59.000Z

478

Deformation and Forming of Joined Materials  

SciTech Connect (OSTI)

Introductory article to a set of invited papers from the TMS committee on shaping and forming. This paper introduces a set of papers that were prepared to discussing the deformation and forming of joined materials, and to announce an upcoming symposium at the 2015 MS&T meeting in Columbus Ohio.

Carsley, John; Hovanski, Yuri; Clarke, Kester D.; Krajewski, Paul E.

2014-09-23T23:59:59.000Z

479

Molecular Resolution and Fragmentation of Fulvic Acid by Electrospray Ionization/Multistage Tandem  

E-Print Network [OSTI]

investigated by electrospray ionization/ion trap multistage tandem mass spectrometry (ESI/MST/ MS). ESI% water mobile phase found that negative ion detection gave the optimum generation of parent ions that can and specific high molecular weight standards found multiply charged negative ions that gave a low bias

480

Multiobjective EA Approach for Improved Quality of Solutions for Spanning Tree Problem  

E-Print Network [OSTI]

results are available for MOST, we consider three well known diameter-constrained minimum spanning tree a minimum spanning tree (MST) from a connected graph is a well-studied problem and many fast algorithms the spanning tree to satisfy additional constraints along with minimum edge-cost. For example, communication

Coello, Carlos A. Coello

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


481

October 14 WA Division Newsletter Page 4 Tool durability and steel microstructure in friction stir welding of mild steel  

E-Print Network [OSTI]

scheme to assess tool durability and tool life in the friction stir welding (FSW) of difficult alumin referencing is freely avail- able at: http://tinyurl.com/mst-fsw. Tools for friction stir welding (FSWOctober 14 WA Division Newsletter Page 4 Tool durability and steel microstructure in friction stir

Cambridge, University of

482

A methdology for baselining the energy use at large campus utility plants for the purpose of measuring energy savings from energy conservation retrofits  

E-Print Network [OSTI]

. 4 Boiler ?10. . D. 1. 5 Boiler ?11 D. 1. 6 Actual Boiler Operation. D. 2 Main Plant Turbine Generators. D. 2. 1 Turbine ?4. D. 2. 2 Turbine ?5. D. 2. 3 Turbine ?6. D. 3 Main Campus Chillers. D. 3. 1 Centrifugal Chillers. . D. 3. 2 Absorption... Simulated Titan 130 gas turbine generator output vs. ambient temperature. . . . . . 3. 15 Simulated Titan 130 gas turbine generator performance vs. ambient temperature. . . . . . . . 67 3. 16 Simulated Titan 130 relative heat rate vs. rated output at 60 'F...

Beasley, Rodney Craig

1999-01-01T23:59:59.000Z

483

Self-powered wireless sensor system using MEMS piezoelectric micro power generator (PMPG)  

E-Print Network [OSTI]

A thin-film lead zirconate titanate, Pb(Zr,Ti)03, MEMS Piezoelectric Micro Power Generator (PMPG) has been integrated with a commercial wireless sensor node (Telos), to demonstrate a self-powered RF temperature sensor ...

Xia, YuXin, M.B.A. Sloan School of Management.

2006-01-01T23:59:59.000Z

484

Mixed ionic and electronic conducting electrode studies for an alkali metal thermal to electric converter  

E-Print Network [OSTI]

This research focuses on preparation, kinetics, and performance studies of mixed ionic and electronic conducting electrodes (MIEE) applied in an alkali metal thermal to electric converter (AMTEC). Two types of MIEE, metal/sodium titanate and metal...

Guo, Yuyan

2009-05-15T23:59:59.000Z

485

Superlattice Structure and Precipitates in O+ and Zr+ Ion Coimplanted...  

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

and Zr+ Ion Coimplanted SrTiO3: a Model Waste Form for 90Sr. Abstract: We investigate strontium titanate as a model waste form for 90Sr. Implantation with O+ and Zr+ ions, followed...

486

Chemical and Charge Imbalance Induced by Radionuclide Decay: Effects on Waste Form Structure  

SciTech Connect (OSTI)

This is a milestone document covering the activities to validate theoretical calculations with experimental data for the effect of the decay of 90Sr to 90Zr on materials properties. This was done for a surragate waste form strontium titanate.

Van Ginhoven, Renee M.; Jaffe, John E.; Jiang, Weilin; Strachan, Denis M.

2011-04-01T23:59:59.000Z

487

Irradiation behavior of SrTiO3 at temperatures close to the critical...  

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

for amorphization. Abstract: Damage accumulation on both the Sr and Ti sublattices in strontium titanate (SrTiO3) has been investigated under 1.0 MeV Au+ irradiation at 360 and 400...

488

CX-007964: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Titanates for Optimized Performance in Separations Science, Innovative Medical Applications and Photochemistry CX(s) Applied: B3.6 Date: 02/08/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office

489

FAU CAREER & TECHNICAL FAIR FALL 2014  

E-Print Network [OSTI]

County--Transition to Teaching The Sherwin-Williams Company The Watershed Addiction Treatment Programs Titan Florida LLC Tiva HealthCare, Inc. Total Quality Logistics Towne Park TracFone Wireless Trade

Fernandez, Eduardo

490

High-pressure studies of ammonia hydrates  

E-Print Network [OSTI]

Ammonia and water are major components of many planetary bodies, from comets and icy moons such as Saturn's Titan to the interiors of the planets Neptune and Uranus. Under a range of high pressures and/or low temperatures known ...

Wilson, Craig W.

2014-06-28T23:59:59.000Z

491

Advanced methods development for LWR trsansient analysis, final report : 1981-1982  

E-Print Network [OSTI]

The initial development of TITAN, a three-dimensional coupled neutronics/thermal-hydraulics code for LWR safety analysis, has been completed. The transient neutronics code QUANDRY has been joined to the two-fluid ...

Griggs, D. P.

1982-01-01T23:59:59.000Z

492

CX-012303: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Post Combustion Carbon Capture Using Polyethylenimine (PEI) Functionalized Titanate Nanotubes CX(s) Applied: B3.6 Date: 05/30/2014 Location(s): Texas Offices(s): National Energy Technology Laboratory

493

Use of titanium-based materials as bactericides  

DOE Patents [OSTI]

Compositions containing metal ions bound into a titanate are described which have demonstrated an ability to suppress bacterial growth of a number of organisms associated with periodontal disease and caries.

Hobbs, David T; Elvington, Mark C; Wataha, John; Chung, Whasun O; Rutherford, R. Bruce; Chan, Daniel C

2013-10-01T23:59:59.000Z

494

Process for making whiskers, fibers and flakes of transition metal compounds  

DOE Patents [OSTI]

A process for making titanium and chromium nitrides of known morphology by reacting potassium titanate and chromium oxide in the gas phase with NH[sub 3]. The products exhibit the same morphology as the starting material.

Bamberger, C.E.

1992-06-02T23:59:59.000Z

495

Process for making whiskers, fibers and flakes of transition metal compounds  

DOE Patents [OSTI]

A process for making titanium and chromium nitrides of known morphology by reacting potassium titanate and chromium oxide in the gas phase with NH.sub.3. The products exhibit the same morphology as the starting material.

Bamberger, Carlos E. (Oak Ridge, TN)

1992-01-01T23:59:59.000Z

496

Open Archive Toulouse Archive Ouverte (OATAO) OATAO is an open access repository that collects the work of Toulouse researchers and  

E-Print Network [OSTI]

Durand Fine powders of BaTiO3 are synthesized by hydrothermal processing at 250 °C for 7 h. Two different- zation process. Keywords barium titanate, dielectric properties, hydrothermal synthesis, ceramic, thick

Paris-Sud XI, Université de

497

amateur football association: Topics by E-print Network  

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

obtained with webcams may even permit Titans disk to be resolved. We additionally report some observations made with amateur equipment mounted on the 1.64m Gerard P. Kuiper...

498

Coated conductors  

DOE Patents [OSTI]

Articles are provided including a base substrate having a layer of an IBAD oriented material thereon, and, a layer of barium-containing material selected from the group consisting of barium zirconate, barium hafnate, barium titanate, barium strontium titanate, barium dysprosium zirconate, barium neodymium zirconate and barium samarium zirconate, or a cubic metal oxide material selected from the group consisting of rare earth zirconates and rare earth hafnates upon the layer of an IBAD oriented material. Such articles can further include thin films of high temperature superconductive oxides such as YBCO upon the layer of barium-containing material selected from the group consisting of barium zirconate, barium hafnate, barium titanate, barium strontium titanate, barium dysprosium zirconate, barium neodymium zirconate and barium samarium zirconate, or a cubic metal oxide material selected from the group consisting of rare earth zirconates and rare earth hafnates.

Arendt, Paul N.; Foltyn, Stephen R.; Stan, Liliana; Usov, Igor O.; Wang, Haiyan

2010-06-15T23:59:59.000Z

499

E-Print Network 3.0 - asymmetric intramolecular alkylation Sample...  

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

of this alkylation reaction can also be catalyzed by chiral titanate complexes2-4 (e.g., TAD- DOLs2 and chiral... ,2-bis(3,5-dichloro-2-hydroxyben- zenesulfonamido)cyclohexane) for...

500

E-Print Network 3.0 - aliphatic alkyl quaternaries Sample Search...  

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

of this alkylation reaction can also be catalyzed by chiral titanate complexes2-4 (e.g., TAD- DOLs2 and chiral... with various substrates. This alkylation approach provides a...