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


1

Phos-toolsTM Phos-tagTM 540 Phosphoprotein Blot Stain  

E-Print Network [OSTI]

maintenance, gene expression, cell division, signal transduction, and apoptosis. PerkinElmer's proprietary procedure is simple, reliable and robust, requiring as little as 2-3 hours to complete. Phos maxima of 300 and 460 nm, with a broad emission maximum centered at approximately 630 nm. Thus, the two

Lebendiker, Mario

2

Test of an LED Monitoring System for the PHOS Spectrometer  

E-Print Network [OSTI]

Preprint submitted to Elsevier Print on 26th January 2000A prototype monitoring system for the Photon Spectrometer (PHOS) of the ALICE experiment at LHC is described in detail. The prototype consists of Control and Master modules. The first one is 8x8 matrix of Light Emitting Diodes coupled with stable generators of current pulses. The system provides an individual control for each of the 64 channels of PHOS prototype based on lead-tungstate crystals. A long term stability of order of 10-3 has been achieved in integral beam tests of the monitoring system and PHOS prototypes.

Blick, A M; Erin, S V; Kharlov, Yu V; Lobanov, M O; Mikhailov, Yu V; Minaev, N G; Petrov, V A; Sadovsky, S A; Samoylenko, V D; Suzdalev, V I; Senko, V A; Tikhonov, V V

1999-01-01T23:59:59.000Z

3

Partially fluorinated ionic compounds  

DOE Patents [OSTI]

Partially fluorinated ionic compounds are prepared. They are useful in the preparation of partially fluorinated dienes, in which the repeat units are cycloaliphatic.

Han, legal representative, Amy Qi (Hockessin, DE); Yang, Zhen-Yu (Hockessin, DE)

2008-11-25T23:59:59.000Z

4

E-Print Network 3.0 - alice phos calorimeter Sample Search Results  

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

Summary: The ALICE experiment at LHC will detect and identify prompt photons and light neutral-mesons with the PHOS... photons in ALICE with the high resolution pho- ton...

5

Fluorination process using catalysts  

DOE Patents [OSTI]

A process is given for converting an actinide compound selected from the group consisting of uranium oxides, plutonium oxides, uranium tetrafluorides, plutonium tetrafluorides and mixtures of said oxides and tetrafluorides, to the corresponding volatile actinide hexafluoride by fluorination with a stoichiometric excess of fluorine gas. The improvement involves conducting the fluorination of the plutonium compounds in the presence of a fluoride catalyst selected from the group consisting of CoF/sub 3/, AgF/sub 2/ and NiF/sub 2/, whereby the fluorination is significantly enhanced. The improvement also involves conducting the fluorination of one of the uranium compounds in the presence of a fluoride catalyst selected from the group consisting of CoF/sub 3/ and AgF/sub 2/, whereby the fluorination is significantly enhanced.

Hochel, R.C.; Saturday, K.A.

1983-08-25T23:59:59.000Z

6

Fluorination process using catalyst  

DOE Patents [OSTI]

A process for converting an actinide compound selected from the group consisting of uranium oxides, plutonium oxides, uranium tetrafluorides, plutonium tetrafluorides and mixtures of said oxides and tetrafluorides, to the corresponding volatile actinide hexafluoride by fluorination with a stoichiometric excess of fluorine gas. The improvement involves conducting the fluorination of the plutonium compounds in the presence of a fluoride catalyst selected from the group consisting of CoF.sub.3, AgF.sub.2 and NiF.sub.2, whereby the fluorination is significantly enhanced. The improvement also involves conducting the fluorination of one of the uranium compounds in the presence of a fluoride catalyst selected from the group consisting of CoF.sub.3 and AgF.sub.2, whereby the fluorination is significantly enhanced.

Hochel, Robert C. (Aiken, SC); Saturday, Kathy A. (Aiken, SC)

1985-01-01T23:59:59.000Z

7

Fluorine separation and generation device  

DOE Patents [OSTI]

A process and apparatus for the electrolytic separation of fluorine from a mixture of gases is disclosed. Also described is the process and apparatus for the generation of fluorine from fluorine/fluoride containing solids, liquids or gases.

Jacobson, Craig P. (Moraga, CA); Visco, Steven J. (Berkeley, CA); DeJonghe, Lutgard C. (Lafayette, CA); Stefan, Constantin I. (Hayward, CA)

2010-03-02T23:59:59.000Z

8

Fluorine separation and generation device  

DOE Patents [OSTI]

A process and apparatus for the electrolytic separation of fluorine from a mixture of gases is disclosed. Also described is the process and apparatus for the generation of fluorine from fluorine/fluoride containing solids, liquids or gases.

The Regents of the University of California (Oakland, CA)

2008-12-23T23:59:59.000Z

9

PerkinElmer Life and Analytical Sciences Phos-toolsTM  

E-Print Network [OSTI]

a critical role in the regulation of cell signaling, metabolic maintenance, gene expression, cell divi- sion. The staining procedure is simple, reliable and robust, re- quiring as little as 3-4 hours to complete. Phos excitation maxima of 300 and 460 nm, with a broad emission maximum centered at approximately 630 nm. Thus

Lebendiker, Mario

10

Heavily fluorinated electronic polymers  

E-Print Network [OSTI]

Building blocks, containing majority fluorine content by weight, for PPEs and PPVs have been synthesized. Some of the monomers were shown to give exclusively fluorous-phase soluble polymers, the syntheses of which were ...

Lim, Jeewoo

2011-01-01T23:59:59.000Z

11

Inexpensive, Nonfluorinated (or Partially Fluorinated) Anions...  

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

& Publications Inexpensive, Nonfluorinated (or Partially Fluorinated) Anions for Lithium Salts and Ionic Liquids for Lithium Battery Electrolytes Inexpensive, Nonfluorinated...

12

Method of preparing pure fluorine gas  

DOE Patents [OSTI]

A simple, inexpensive system for purifying and storing pure fluorine is described. The method utilizes alkali metal-nickel fluorides to absorb tank fluorine by forming nickel complex salts and leaving the gaseous impurities which are pumped away. The complex nickel fluoride is then heated to evolve back pure gaseous fluorine.

Asprey, Larned B. (Los Alamos, NM)

1976-01-01T23:59:59.000Z

13

Partially fluorinated cyclic ionic polymers and membranes  

DOE Patents [OSTI]

Ionic polymers are made from selected partially fluorinated dienes, in which the repeat units are cycloaliphatic. The polymers are formed into membranes.

Yang, Zhen-Yu

2013-04-09T23:59:59.000Z

14

Copolymers of fluorinated polydienes and sulfonated polystyrene  

SciTech Connect (OSTI)

Copolymers of fluorinated polydienes and sulfonated polystyrene and their use in fuel cell membranes, batteries, breathable chemical-biological protective materials, and templates for sol-gel polymerization.

Mays, Jimmy W. (Knoxville, TN); Gido, Samuel P. (Hadley, MA); Huang, Tianzi (Knoxville, TN); Hong, Kunlun (Knoxville, TN)

2009-11-17T23:59:59.000Z

15

Vehicle Technologies Office Merit Review 2014: Fluorinated Electrolyte...  

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

Fluorinated Electrolyte for 5-V Li-Ion Chemistry Vehicle Technologies Office Merit Review 2014: Fluorinated Electrolyte for 5-V Li-Ion Chemistry Presentation given by Argonne...

16

Energetics of Defects on Graphene through Fluorination  

SciTech Connect (OSTI)

In the present study, we used FGS[5] as the substrate and implemented low temperature (<=150 oC) direct fluorination on graphene sheets. The fluorine content has been modulated to investigate the formation mechanism of different functional groups such as C-F, CF2, O-CF2 and (C=O)F during the fluorination process. The detailed structure and chemical bonds were simulated theoretically and quantified experimentally by using density function theory (DFT) calculations and NMR techniques, respectively. The adjustable power/energy ratio from fluorinated graphene as cathode for primary lithium batteries is also discussed. From a combination of NMR spectroscopy and theoretical calculation, we conclude that the topological defects without oxygen containing groups provide most of the reactive sites to react with F. FGS also contain a small number of COOH groups which contribute for the fluorination reaction. Hydroxyl or epoxy groups contribute to another fraction of the reaction products.

Xiao, Jie; Meduri, Praveen; Chen, Honghao; Wang, Zhiguo; Gao, Fei; Hu, Jian Z.; Feng, Ju; Hu, Mary Y.; Dai, Sheng; Brown, Suree; Adcock, Jamie L.; Deng, Zhiqun; Liu, Jun; Graff, Gordon L.; Aksay, Ilhan A.; Zhang, Jiguang

2014-04-01T23:59:59.000Z

17

Passivation of fluorinated activated charcoal  

SciTech Connect (OSTI)

The Molten Salt Reactor Experiment (MSRE), at the Oak Ridge National Laboratory has been shut down since 1969 when the fuel salt was drained from the core into two Hastelloy N tanks at the reactor site. In 1995, a multiyear project was launched to remediate the potentially hazardous conditions generated by the movement of fissile material and reactive gases from the storage tanks into the piping system and an auxiliary charcoal bed (ACB). The top 12 in. of the ACB is known by gamma scan and thermal analysis to contain about 2.6 kg U-233. According to the laboratory tests, a few feet of fluorinated charcoal are believed to extend beyond the uranium front. The remainder of the ACB should consist of unreacted charcoal. Fluorinated charcoal, when subjected to rapid heating, can decompose generating gaseous products. Under confined conditions, the sudden exothermic decomposition can produce high temperatures and pressures of near-explosive characteristics. Since it will be necessary to drill and tap the ACB to allow installation of piping and instrumentation for remediation and recovery activities, it is necessary to chemically convert the reactive fluorinated charcoal into a more stable material. Ammonia can be administered to the ACB as a volatile denaturing agent that results in the conversion of the C{sub x}F to carbon and ammonium fluoride, NH{sub 4}F. The charcoal laden with NH{sub 4}F can then be heated without risking any sudden decomposition. The only consequence of heating the treated material will be the volatilization of NH{sub 4}F as a mixture of NH{sub 3} and HF, which would primarily recombine as NH{sub 4}F on surfaces below 200 C. The planned scheme for the ACB denaturing is to flow diluted ammonia gas in steps of increasing NH{sub 3} concentration, 2% to 50%, followed by the injection of pure ammonia. This report summarizes the planned passivation treatment scheme to stabilize the ACB and remove the potential hazards. It also includes basic information, results of laboratory tests, thermodynamic calculations, process description, and operational parameters, and addresses safety concerns.

Del Cul, G.D.; Trowbridge, L.D.; Simmons, D.W.; Williams, D.F.; Toth, L.M.

1997-10-01T23:59:59.000Z

18

Super-hydrophobic fluorine containing aerogels  

DOE Patents [OSTI]

An aerogel material with surfaces containing fluorine atoms which exhibits exceptional hydrophobicity, or the ability to repel liquid water. Hydrophobic aerogels are efficient absorbers of solvents from water. Solvents miscible with water are separated from it because the solvents are more volatile than water and they enter the porous aerogel as a vapor across the liquid water/solid interface. Solvents that are immisicble with water are separated from it by selectively wetting the aerogel. The hydrophobic property is achieved by formulating the aerogel using fluorine containing molecules either directly by addition in the sol-gel process, or by treating a standard dried aerogel using the vapor of fluorine containing molecules.

Coronado, Paul R. (Livermore, CA); Poco, John F. (Livermore, CA); Hrubesh, Lawrence W. (Pleasanton, CA)

2007-05-01T23:59:59.000Z

19

Tunable Electrochemical Properties of Fluorinated Graphene  

SciTech Connect (OSTI)

The structural and electrochemical properties of fluorinated graphene have been investigated by using a series of graphene fluorides (CFx, x=0.47, 0.66, 0.89). Fluorinated graphene exhibited high capacity retentions of 75-81% of theoretical capacity at moderate rates as cathode materials for primary lithium batteries. Specifically, CF0.47 maintained a capacity of 356 mAhg-1 at a 5C rate, superior to that of traditional fluorinated graphite. The discharged graphene fluorides also provide an electrochemical tool to probe the chemical bonding on the parent graphene substrate.

Meduri, Praveen; Chen, Honghao; Xiao, Jie; Martinez, Jayson J.; Carlson, Thomas J.; Zhang, Jiguang; Deng, Zhiqun

2013-06-18T23:59:59.000Z

20

Method for fluorination of uranium oxide  

DOE Patents [OSTI]

Highly pure uranium hexafluoride is made from uranium oxide and fluorine. The uranium oxide, which includes UO.sub.3, UO.sub.2, U.sub.3 O.sub.8 and mixtures thereof, is introduced together with a small amount of a fluorine-reactive substance, selected from alkali chlorides, silicon dioxide, silicic acid, ferric oxide, and bromine, into a constant volume reaction zone. Sufficient fluorine is charged into the zone at a temperature below approximately 0.degree. C. to provide an initial pressure of at least approximately 600 lbs/sq. in. at the ambient atmospheric temperature. The temperature is then allowed to rise in the reaction zone until reaction occurs.

Petit, George S. (Oak Ridge, TN)

1987-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Fluorinated diamond bonded in fluorocarbon resin  

DOE Patents [OSTI]

By fluorinating diamond grit, the grit may be readily bonded into a fluorocarbon resin matrix. The matrix is formed by simple hot pressing techniques. Diamond grinding wheels may advantageously be manufactured using such a matrix. Teflon fluorocarbon resins are particularly well suited for using in forming the matrix.

Taylor, Gene W. (Los Alamos, NM)

1982-01-01T23:59:59.000Z

22

PhosPhorus, Agriculture &  

E-Print Network [OSTI]

Phosphorus lost from agricultural soils can increase the fertility status of natural waters (eutrophication that controls eutrophication of fresh waters.The USEPA has recommended a limit for controlling eutrophication have not been established. Numerous water quality problems have been associated with eutrophication

Liskiewicz, Maciej

23

Fluorine compounds for doping conductive oxide thin films  

DOE Patents [OSTI]

Methods of forming a conductive fluorine-doped metal oxide layer on a substrate by chemical vapor deposition are described. The methods may include heating the substrate in a processing chamber, and introducing a metal-containing precursor and a fluorine-containing precursor to the processing chamber. The methods may also include adding an oxygen-containing precursor to the processing chamber. The precursors are reacted to deposit the fluorine-doped metal oxide layer on the substrate. Methods may also include forming the conductive fluorine-doped metal oxide layer by plasma-assisted chemical vapor deposition. These methods may include providing the substrate in a processing chamber, and introducing a metal-containing precursor, and a fluorine-containing precursor to the processing chamber. A plasma may be formed that includes species from the metal-containing precursor and the fluorine-containing precursor. The species may react to deposit the fluorine-doped metal oxide layer on the substrate.

Gessert, Tim; Li, Xiaonan; Barnes, Teresa M; Torres, Jr., Robert; Wyse, Carrie L

2013-04-23T23:59:59.000Z

24

Fluorine in coal and coal by-products  

SciTech Connect (OSTI)

Fluorine occurs in awe amounts in most coals. It is typically associated with minerals of the apatite group, principally fluorapatite and clays, and with fluorite, tourmaline, topaz, amphiboles and micas. The average fluorine content of US coal is, according to the tabulation of Swanson, 74 {mu}g/g. In the United States, the lowest average fluorine concentration of 30 {mu}g/g is found in coals from Eastern Kentucky and the highest average value of 160 {mu}g/g is found in coals from Wyoming and New Mexico. The concentration range of fluorine in European coals is similar to that found in the US while the average fluorine content of Australian coals ranges from 15 to 500 {mu}g/g. We have determined the fluorine content in coal and fly ash standards by proton-induced gamma ray emission analysis (PIGE).

Robertson, J.D.; Wong, A.S.; Hower, J.C. [Univ. of Kentucky, Lexington, KY (United States)

1994-12-31T23:59:59.000Z

25

Fluorine Gas Management Guidelines Fluorine is a highly toxic, pale yellow gas about 1.3 times as heavy as air at atmospheric  

E-Print Network [OSTI]

Fluorine Gas Management Guidelines Overview Fluorine is a highly toxic, pale yellow gas about 1.3 times as heavy as air at atmospheric temperature and pressure. Fluorine gas is the most powerful oxidizing agent known, reacting with practically all organic and inorganic substances. Fluorine gas

de Lijser, Peter

26

Production of fluorine-18 for medical applications  

E-Print Network [OSTI]

ranging from 30-100 MeV. This 18 showed the effect of increasing energy on the yield of the F produced. Further studies were undertaken to determine the optimum yield conditions. The effect of pH, adding a fluoride carrier and varying the irradiation... considerable radiation burden on the patient. Fluorine-18 has especially been shown to be highly (6) effective in the diagnosis of bone diseases; in many cases, it . (8) is even more effective in early diagnosis than is x-ray. For (5) all of these reasons...

Sullivan, Patricia Papa

1973-01-01T23:59:59.000Z

27

Studies of atomic and molecular fluorine reactions on silicon surfaces  

SciTech Connect (OSTI)

X-ray photoelectron spectroscopy (XPS) and an ultrahigh vacuum compatible microwave discharge effusive beam source have been used to study the reactions of atomic and molecular fluorine on Si(111) surfaces. Fluorine uptake and changes in binding energy and peak shape for the Si 2p and F 1s XPS peaks have been measured as functions of fluorine exposure. The results indicate that molecular fluorine is dissociatively chemisorbed to form an SiF/sub 2/-like surface species. This reaction saturates at approximately one monolayer surface coverage. In contrast, atomic fluorine uptake extends well beyond the monolayer regime to include several Si layers. Additionally, as the uptake increases, the reaction product becomes SiF/sub 4/-like. These findings are compared with previously reported results for XeF/sub 2/ adsorption.

Stinespring, C.D.; Freedman, A.

1986-03-17T23:59:59.000Z

28

Iodine transport analysis in the ESBWR.  

SciTech Connect (OSTI)

A simplified ESBWR MELCOR model was developed to track the transport of iodine released from damaged reactor fuel in a hypothesized core damage accident. To account for the effects of iodine pool chemistry, radiolysis of air and cable insulation, and surface coatings (i.e., paint) the iodine pool model in MELCOR was activated. Modifications were made to MELCOR to add sodium pentaborate as a buffer in the iodine pool chemistry model. An issue of specific interest was whether iodine vapor removed from the drywell vapor space by the PCCS heat exchangers would be sequestered in water pools or if it would be rereleased as vapor back into the drywell. As iodine vapor is not included in the deposition models for diffusiophoresis or thermophoresis in current version of MELCOR, a parametric study was conducted to evaluate the impact of a range of iodine removal coefficients in the PCCS heat exchangers. The study found that higher removal coefficients resulted in a lower mass of iodine vapor in the drywell vapor space.

Kalinich, Donald A.; Gauntt, Randall O.; Young, Michael Francis; Longmire, Pamela

2009-03-01T23:59:59.000Z

29

Method for directly recovering fluorine from gas streams  

DOE Patents [OSTI]

This invention is a process for the direct recovery of gaseous fluorine from waste-gas streams or the like. The process comprises passing the gas stream through a bed of anhydrous K.sub.3 NiF.sub.6 pellets to fluorinate the same to K.sub.3 NiF.sub.7 and subsequently desorbing the fluorine by heating the K.sub.3 NiF.sub.7 pellets to a temperature re-converting them to K.sub.3 NiF.sub.6. The efficiency of the fluorine-absorption step is maximized by operating in a selected and conveniently low temperature. The desorbed fluorine is highly pure and is at a pressure of several atmospheres. Preferably, the K.sub.3 NiF.sub.6 pellets are prepared by a method including the steps of forming agglomerates of hydrated K.sub.3 NiF.sub.5, sintering the agglomerates to form K.sub.3 NiF.sub.5 pellets of enhanced reactivity with respect to fluorine, and fluorinating the sintered pellets to K.sub.3 NiF.sub.6.

Orlett, Michael J. (Portsmouth, OH); Saraceno, Anthony J. (Waverly, OH)

1981-01-01T23:59:59.000Z

30

Fluorination of amorphous thin-film materials with xenon fluoride  

DOE Patents [OSTI]

A method is disclosed for producing fluorine-containing amorphous semiconductor material, preferably comprising amorphous silicon. The method includes depositing amorphous thin-film material onto a substrate while introducing xenon fluoride during the film deposition process.

Weil, R.B.

1987-05-01T23:59:59.000Z

31

Dry process fluorination of uranium dioxide using ammonium bifluoride  

E-Print Network [OSTI]

An experimental study was conducted to determine the practicality of various unit operations for fluorination of uranium dioxide. The objective was to prepare ammonium uranium fluoride double salts from uranium dioxide and ...

Yeamans, Charles Burnett, 1978-

2003-01-01T23:59:59.000Z

32

Subnanosecond photodissociation atomic iodine laser  

SciTech Connect (OSTI)

The Q factor of an iodine photodissociation laser was switched periodically by a quarter-wave Pockels cell. The voltage applied to the cell was produced by discharging a cable line and it represented a sequence of damped trapezoidal pulses with steep edges. The repetition period of the transmission maxima of the switch was equal to the round-trip time of the resonator. The gas mixture consisted of C/sub 3/F/sub 7/I (7--15 Torr) and Ar; the total pressure was 1 atm. A train of subnanosecond laser pulses consisting of 3--4 pulses was obtained. The total energy of the train was 10--20 mJ and the minimum duration of a single pulse was 0.4 nsec.

Acnenkov, V.I.; Belotserkovets, A.V.; Grigorovich, S.V.

1981-09-01T23:59:59.000Z

33

Mixed-layered bismuth-oxygen-iodine materials for capture and waste disposal of radioactive iodine  

DOE Patents [OSTI]

Materials and methods of synthesizing mixed-layered bismuth oxy-iodine materials, which can be synthesized in the presence of aqueous radioactive iodine species found in caustic solutions (e.g. NaOH or KOH). This technology provides a one-step process for both iodine sequestration and storage from nuclear fuel cycles. It results in materials that will be durable for repository conditions much like those found in Waste Isolation Pilot Plant (WIPP) and estimated for Yucca Mountain (YMP). By controlled reactant concentrations, optimized compositions of these mixed-layered bismuth oxy-iodine inorganic materials are produced that have both a high iodine weight percentage and a low solubility in groundwater environments.

Krumhansl, James L; Nenoff, Tina M

2013-02-26T23:59:59.000Z

34

A new solar fluorine abundance and a fluorine determination in the two open clusters M 67 and NGC 6404  

E-Print Network [OSTI]

We present a new determination of the solar fluorine abundance together with abundance measurements of fluorine in two Galactic open clusters. We analyzed a sunspot spectrum, observed by L. Wallace and W. Livingston with the FTS at the McMath/Pierce Solar Telescope situated on Kitt Peak and spectra of four giants in the old cluster M 67 (~4.5 Gyr) and three giants in the young cluster NGC 6404 (~0.5 Gyr), obtained with the CRIRES spectrograph at VLT. Fluorine was measured through synthesis of the available HF lines. We adopted the recent set of experimental molecular parameters of HF delivered by the HITRAN database, and found a new solar fluorine abundance of A(F)=3.80+/-0.25, in good agreement with the M 67 average fluorine abundance of A(F) = 3.89+/-0.20. The new solar abundance is significantly lower than the previous estimate, mostly due to the new set of experimental molecular parameters adopted in this study. The used modern spectrosynthesis tools, together with the agreement with the results in open c...

Maiorca, E; Uttenthaler, S; Randich, S; Busso, M; Magrini, L

2014-01-01T23:59:59.000Z

35

Thermal Stability of Fluorinated Polydienes Synthesized by Addition of Difluorocarbene  

SciTech Connect (OSTI)

Linear PCHD and polyisoprenes with different microstructures and molecular weights are synthesized and chemically modified to improve their thermal and chemical stability by forming a three-membered ring structure containing two C-F bonds. Pyrolysis of these fluorinated polydienes proceeds through a two-stage decomposition involving chain scission, crosslinking, dehydrogenation, and dehalogenation. The pyrolysis leads to graphite-like residues, whereas their polydiene precursors decompose completely under the same conditions. The fluorination of PCHD enhances its thermal stability. The stronger C-F bond along with high strain of the three-membered ring structure and formation of relatively stable free radicals play an important role in the thermal stability of fluorinated polydienes.

Huang, Tianzi [University of Tennessee, Knoxville (UTK); Wang, Xiaojun [ORNL; Malmgren, Thomas W [ORNL; Hong, Kunlun [ORNL; Mays, Jimmy [ORNL

2012-01-01T23:59:59.000Z

36

The Behaviour ofIodine in the Terrestrial Environment.  

E-Print Network [OSTI]

The Behaviour ofIodine in the Terrestrial Environment. An Investigation of the Possible Roskilde, Denmark Febtuary 1990 #12;1 Risø-M-2851 THE BEHAVIOUR OF IODINE IN THE TERRESTRIAL ENVIRONMENT influence the migration behaviour of iodine in the terrestrial environment. It is stated that the organic

37

Fluorinated epoxides 6. Chemoselectivity in the preparation of  

E-Print Network [OSTI]

to allyl acetate) and fluorinated iodohydrin (CF3)2CFCH2CHICH2OH (2) (prepared from 1) were converted with allyl acetate [13­16] followed by epoxide formation. In contrast to the former report [9], we have found and iodohydrin 2 The dibenzoyl peroxide (DBP) induced addition of perfluoroisopropyl iodide to allyl acetate

Cirkva, Vladimir

38

Speciation and transport of anthropogenic 129Iodine and natural 127Iodine in surface and subsurface environments  

E-Print Network [OSTI]

, the majority of iodine appears to be in proteins (Hou et al., 2000). In humic acids, the majority of iodine appears to be in methoxy-phenols (Warner et al., 2000). In experiments where natural organic matter in river water is exposed to inorganic I- for ~ 2... for the degree of DOCTOR OF PHILOSOPHY Approved as to style and content by: Peter H. Santschi (Chair of Committee) Luis A. Cifuentes (Member) Gary A. Gill (Member) Ethan Grossman (Member) Laodong Guo (Member) Wilford D...

Schwehr, Kathleen Ann

2005-02-17T23:59:59.000Z

39

Fluorinated diamond particles bonded in a filled fluorocarbon resin matrix  

DOE Patents [OSTI]

A method of producing fluorinated diamond particles bonded in a filled fluorocarbon resin matrix. Simple hot pressing techniques permit the formation of such matrices from which diamond impregnated grinding tools and other articles of manufacture can be produced. Teflon fluorocarbon resins filled with Al/sub 2/O/sub 3/ yield grinding tools with substantially improved work-to-wear ratios over grinding wheels known in the art.

Taylor, G.W.; Roybal, H.E.

1983-11-14T23:59:59.000Z

40

Fluorinated diamond particles bonded in a filled fluorocarbon resin matrix  

DOE Patents [OSTI]

A method of producing fluorinated diamond particles bonded in a filled fluorocarbon resin matrix. Simple hot pressing techniques permit the formation of such matrices from which diamond impregnated grinding tools and other articles of manufacture can be produced. Teflon fluorocarbon resins filled with Al.sub.2 O.sub.3 yield grinding tools with substantially improved work-to-wear ratios over grinding wheels known in the art.

Taylor, Gene W. (Los Alamos, NM); Roybal, Herman E. (Santa Fe, NM)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Fluorinated diamond thin films for tribological applications. Final report, April-October 1989  

SciTech Connect (OSTI)

Diamond (100) substrates have been fluorinated with both atomic and molecular fluorine under ultrahigh vacuum conditions using molecular beams. X-ray photoelectron spectra of the resulting samples indicate that atomic fluorine, F, reacts with an initial accommodation coefficient of 0.25 (+ or - 0.1) at 298 K; a saturation coverage of about three quarters of a monolayer is obtained. The carbon fluoride adlayer is thermally stable to 700 K, but slowly desorbs at temperatures above this. In contrast, molecular fluorine, F2, reacts quite slowly; a saturation coverage of less than one fifth of a monolayer after several hundred monolayers exposure to F2 at temperatures from 300 K to 700 K is achieved. In addition, diamond substrates saturated with fluorine atoms showed no loss of fluorine after exposure to beams of H2 and O2 at temperatures between 300 K and 700 K.

Freedman, A.; Stinespring, C.

1990-01-04T23:59:59.000Z

42

Characteristics of fluorinated nitroazoles as hypoxic cell radiosensitizers  

SciTech Connect (OSTI)

Types of 2-nitroimidazoles and 3-nitro-1,2,4-triazoles bearing one or two fluorine atoms on their side chains were synthesized to evaluate their physicochemical properties, radiosensitizing effects, and toxicity. The reduction potential of the compounds containing one fluorine was similar to that of misonidazole (MISO), whereas that of the difluorinated compounds was slightly higher. Both mono- and difluorinated compounds had an in vitro sensitizing activity comparable to or slightly higher than that of MISO. The fluorinated 3-nitrotriazoles were almost as efficient as the 2-nitroimidazoles with the same substituent. In vivo, some of the compounds were up to twice more efficient than MISO, whereas others were as efficient as MISO. Toxicity in terms of LD50/7 in mice was quite variable depending on the side-chain structure; the amide derivatives were less toxic than MISO, whereas the alcohol and ether derivatives were more toxic. In view of the radiosensitizing effect and toxicity in vivo, at least one compound, KU-2285 (a 2-nitroimidazole with an N1-substituent of: CH2CF2CONHCH2CH2OH) has been found to be as useful a hypoxic cell sensitizer as SR-2508.

Shibamoto, Y.; Nishimoto, S.; Shimokawa, K.; Hisanaga, Y.; Zhou, L.; Wang, J.; Sasai, K.; Takahashi, M.; Abe, M.; Kagiya, T.

1989-04-01T23:59:59.000Z

43

Fluorinated precursors of superconducting ceramics, and methods of making the same  

DOE Patents [OSTI]

This invention provides a method of making a fluorinated precursor of a superconducting ceramic. The method comprises providing a solution comprising a rare earth salt, an alkaline earth metal salt and a copper salt; spraying the solution onto a substrate to provide a film-covered substrate; and heating the film-covered substrate in an atmosphere containing fluorinated gas to provide the fluorinated precursor.

Wiesmann, Harold (Stony Brook, NY); Solovyov, Vyacheslav (Rocky Point, NY)

2008-04-22T23:59:59.000Z

44

Fluorinated precursors of superconducting ceramics, and methods of making the same  

DOE Patents [OSTI]

This invention provides a method of making a fluorinated precursor of a superconducting ceramic. The method comprises providing a solution comprising a rare earth salt, an alkaline earth metal salt and a copper salt; spraying the solution onto a substrate to provide a film-covered substrate; and heating the film-covered substrate in an atmosphere containing fluorinated gas to provide the fluorinated precursor.

Wiesmann, Harold (Stony Brook, NY); Solovyov, Vyacheslav (Rocky Point, NY)

2012-07-10T23:59:59.000Z

45

Fluorinated precursors of superconducting ceramics, and methods of making the same  

DOE Patents [OSTI]

This invention provides a method of making a fluorinated precursor of a superconducting ceramic. The method comprises providing a solution comprising a rare earth salt, an alkaline earth metal salt and a copper salt; spraying the solution onto a substrate to provide a film-covered substrate; and heating the film-covered substrate in an atmosphere containing fluorinated gas to provide the fluorinated precursor.

Wiesmann, Harold; Solovyov, Vyacheslav

2014-02-18T23:59:59.000Z

46

Vehicle Technologies Office Merit Review 2014: Fluorinated Electrolyte for 5-V Li-Ion Chemistry  

Broader source: Energy.gov [DOE]

Presentation given by Argonne National Laboratory at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about fluorinated...

47

Method for gettering organic, inorganic and elemental iodine in aqueous solutions  

DOE Patents [OSTI]

A process for the removal of iodine from aqueous solutions, particularly the trapping of radioactive iodine to mitigate damage resulting from accidents or spills associated with nuclear reactors, by exposing the solution to well dispersed silver carbonate which reacts with the iodine and iodides, thereby gettering iodine and iodine compounds from solution. The iodine is not only removed from solution but also from the contiguous vapor.

Beahm, Edward C. (Oak Ridge, TN); Shockley, William E. (Oak Ridge, TN)

1990-01-01T23:59:59.000Z

48

Iodine Sorbent Performance in FY 2012 Deep Bed Tests  

SciTech Connect (OSTI)

Nuclear fission results in the production of fission products and activation products, some of which tend to be volatile during used fuel reprocessing and evolve in gaseous species into the reprocessing facility off-gas systems. Analyses have shown that I-129, due to its radioactivity, high potential mobility in the environment, and high longevity (half life of 15.7 million years), can require control efficiencies of up to 1,000x or higher to meet regulatory emission limits. Iodine capture is an important aspect of the Separations and Waste Forms Campaign Off-gas Sigma Team (Jubin 2011, Pantano 2011). Deep-bed iodine sorption tests for both silver-functionalized Aerogel and silver zeolite sorbents were performed during Fiscal Year 2012. These tests showed that: • Decontamination factors were achieved that exceed reasonably conservative estimates for DFs needed for used fuel reprocessing facilities in the U.S. to meet regulatory requirements for I-129 capture. • Silver utilizations approached or exceeded 100% for high inlet gas iodine concentrations, but test durations were not long enough to approach 100% silver utilization for lower iodine concentrations. • The depth of the mass transfer zone was determined for both low iodine concentrations (under 10 ppmv) and for higher iodine concentrations (between 10-50 ppmv); the depth increases over time as iodine is sorbed. • These sorbents capture iodine by chemisorption, where the sorbed iodine reacts with the silver to form very non-volatile AgI. Any sorbed iodine that is physisorbed but not chemically reacted with silver to form AgI might not be tightly held by the sorbent. The portion of sorbed iodine that tends to desorb because it is not chemisorbed (reacted to form AgI) is small, under 1%, for the AgZ tests, and even smaller, under 0.01%, for the silver-functionalized Aerogel.

Nick Soelberg; Tony Watson

2012-08-01T23:59:59.000Z

49

Determination of iodine to compliment mass spectrometric measurements  

SciTech Connect (OSTI)

The dose of iodine-129 to facility personnel and the general public as a result of past, present, and future activities at DOE sites is of continuing interest, WINCO received about 160 samples annually in a variety of natural matrices, including snow, milk, thyroid tissue, and sagebrush, in which iodine-129 is determined in order to evaluate this dose, Currently, total iodine and the isotopic ratio of iodine-127 to iodine-129 are determined by mass spectrometry. These two measurements determine the concentration of iodine-129 in each sample, These measurements require at least 16 h of mass spectrometer operator time for each sample. A variety of methods are available which concentrate and determine small quantities of iodine. Although useful, these approaches would increase both time and cost. The objective of this effort was to determine total iodine by an alternative method in order to decrease the load on mass spectrometry by 25 to 50%. The preparation of each sample for mass spectrometric analysis involves a common step--collection of iodide on an ion exchange bed. This was the focal point of the effort since the results would be applicable to all samples.

Hohorst, F.A.

1994-11-01T23:59:59.000Z

50

Detection of iodine monoxide in the tropical free troposphere  

E-Print Network [OSTI]

19, 2012) Atmospheric iodine monoxide (IO) is a radical that catalytically destroys heat trapping in the remote tropical marine boundary layer (MBL) (2­4). IO further affects the oxidative capacity iodine species over the remote ocean remain poorly understood (11, 14) but are currently thought

51

Molecular Properties of the "Ideal" Inhaled Anesthetic: Studies of Fluorinated Methanes, Ethanes, Propanes,  

E-Print Network [OSTI]

, Propanes, and Butanes E. 1Eger, 11, MD*, J. Liu, MD*, D. D. Koblin, PhD, MDt, M. J. Laster, DVM*, S. Taheri unfluorinated, partially fluorinated, and perfluorinated methanes, ethanes, propanes, and butanes to define fluorinated methanes, ethanes, propanes, and butanes, also obtaining limited data on longer- chained alkanes

Hudlicky, Tomas

52

Gain and continuous-wave laser power enhancement with a secondary discharge to predissociate molecular iodine  

E-Print Network [OSTI]

with this chemical singlet oxygen generator motivated many investi- gations into an electrically driven oxygen molecular iodine in an electric oxygen-iodine laser G. F. Benavides,1 J. W. Zimmerman,2 B. S. Woodard,2 D. L the addition of a secondary discharge to predissociate the molecular iodine in an electric oxygen-iodine laser

Carroll, David L.

53

Aging and iodine loading of silver-functionalized aerogels  

SciTech Connect (OSTI)

Engineered silver-functionalized silica aerogels are being investigated for their potential application in off-gas treatment at a used nuclear fuel reprocessing facility. Reprocessing will release several key volatile radionuclides, including iodine-129. To achieve regulatory compliance, iodine-129 must be removed from any off-gas stream prior to environmental discharge. Ag{sup 0}-functionalized aerogels have been demonstrated to have high iodine-capture capacity, high porosity, and potential for conversion into a waste form. Capture materials used in off-gas treatment may be exposed to a heated, high-humidity, acidic gas stream for months. Extended exposure to this stream could affect sorbent performance. It was the aim of this study to evaluate what impacts might be observed when Ag{sup 0}-functionalized aerogels prepared at Pacific Northwest National Laboratory were contacted with a dry air stream for up to 6 months and then used to adsorb iodine from a synthetic off-gas stream. Results demonstrate that there is some loss of iodine-capture capacity caused by aging, but that this loss is not as marked as for aging of more traditional iodine sorbents, such as silver-impregnated mordenite. Specifically, aging silver-functionalized aerogel under a dry air stream for up to 6 months can decrease its iodine capacity from 41 wt% to 32 wt%. (authors)

Bruffey, S.H.; Jubin, R.T.; Anderson, K.K.; Walker, J.F. [Oak Ridge National Laboratory, P.O. Box 2008, MS-6223, Oak Ridge, TN 37831 (United States)

2013-07-01T23:59:59.000Z

54

AGING AND IODINE LOADING OF SILVER-FUNCTIONALIZED AEROGELS  

SciTech Connect (OSTI)

Engineered silver-functionalized silica aerogels are being investigated for their application in off-gas treatment at a used nuclear fuel reprocessing facility. Reprocessing will release several key volatile radionuclides, including iodine-129. To achieve regulatory compliance, iodine-129 must be removed from any off-gas stream prior to environmental discharge. Silver-functionalized aerogels have been demonstrated to have high iodine capture capacity, high porosity and potential for conversion into a waste form. Capture materials used in off-gas treatment may be exposed to a heated, high humidity, acidic gas stream for months. Extended exposure to this stream could affect sorbent performance. It was the aim of this study to evaluate what impacts might be observed when Ag0-functionalized aerogels prepared at Pacific Northwest National Laboratory were contacted with a dry air stream for up to 6 months and then used to adsorb iodine from a synthetic off-gas stream. Results demonstrate that there is some loss of iodine capture capacity caused by aging, but that this loss is not as marked as for aging of more traditional iodine sorbents, such as silver-impregnated mordenite. Specifically, aging silver-functionalized aerogel under a dry air stream for up to 6 months can decrease its iodine capacity from 41wt% to 32wt%.

Bruffey, Stephanie H [ORNL; Jubin, Robert Thomas [ORNL; Anderson, Kaara K [ORNL; Walker Jr, Joseph Franklin [ORNL

2013-01-01T23:59:59.000Z

55

Method of forming fluorine-bearing diamond layer on substrates, including tool substrates  

DOE Patents [OSTI]

A method of forming a fluorine-bearing diamond layer on non-diamond substrates, especially on tool substrates comprising a metal matrix and hard particles, such as tungsten carbide particles, in the metal matrix. The substrate and a fluorine-bearing plasma or other gas are then contacted under temperature and pressure conditions effective to nucleate fluorine-bearing diamond on the substrate. A tool insert substrate is treated prior to the diamond nucleation and growth operation by etching both the metal matrix and the hard particles using suitable etchants.

Chang, R. P. H. (Glenview, IL); Grannen, Kevin J. (Evanston, IL)

2002-01-01T23:59:59.000Z

56

Iodine-coordinated sulfide leads to an exceptionally stable ceramic...  

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

LPS and LiI. This new formulation takes advantage of the chemical stability of LiI to render an electrolyte with excellent compatability with Li anode. Additionally, the iodine...

57

Uranium mineralization in fluorine-enriched volcanic rocks  

SciTech Connect (OSTI)

Several uranium and other lithophile element deposits are located within or adjacent to small middle to late Cenozoic, fluorine-rich rhyolitic dome complexes. Examples studied include Spor Mountain, Utah (Be-U-F), the Honeycomb Hills, Utah (Be-U), the Wah Wah Mountains, Utah (U-F), and the Black Range-Sierra Cuchillo, New Mexico (Sn-Be-W-F). The formation of these and similar deposits begins with the emplacement of a rhyolitic magma, enriched in lithophile metals and complexing fluorine, that rises to a shallow crustal level, where its roof zone may become further enriched in volatiles and the ore elements. During initial explosive volcanic activity, aprons of lithicrich tuffs are erupted around the vents. These early pyroclastic deposits commonly host the mineralization, due to their initial enrichment in the lithophile elements, their permeability, and the reactivity of their foreign lithic inclusions (particularly carbonate rocks). The pyroclastics are capped and preserved by thick topaz rhyolite domes and flows that can serve as a source of heat and of additional quantities of ore elements. Devitrification, vapor-phase crystallization, or fumarolic alteration may free the ore elements from the glassy matrix and place them in a form readily leached by percolating meteoric waters. Heat from the rhyolitic sheets drives such waters through the system, generally into and up the vents and out through the early tuffs. Secondary alteration zones (K-feldspar, sericite, silica, clays, fluorite, carbonate, and zeolites) and economic mineral concentrations may form in response to this low temperature (less than 200 C) circulation. After cooling, meteoric water continues to migrate through the system, modifying the distribution and concentration of the ore elements (especially uranium).

Burt, D.M.; Sheridan, M.F.; Bikun, J.; Christiansen, E.; Correa, B.; Murphy, B.; Self, S.

1980-09-01T23:59:59.000Z

58

Origin of electronic transport of lithium phthalocyanine iodine crystal  

SciTech Connect (OSTI)

The electronic structures of Lithium Phthalocyanine Iodine are investigated using density functional theory. Comparing the band structures of several model crystals, the metallic conductivity of highly doped LiPcI{sub x} can be explained by the band of doped iodine. These results reveal that there is a new mechanism for electronic transport of doped organic semiconductors that the dopant band plays the main role.

Koike, Noritake; Oda, Masato; Shinozuka, Yuzo [Department of Materials Science and Chemistry, Wakayama University, 930 Sakaedani, Wakayama (Japan)

2013-12-04T23:59:59.000Z

59

Iodine in Drinking Waters, Vegetables, Cottonseed Meal, and Roughages.  

E-Print Network [OSTI]

LIBRARY, A & M COLLEGE, G. S. FRAPS and J. F. FUDGE Division of Chemistry TEXAS AGRICULTURAL EXPERIMENT STATION A. B. CONNER, DIRECTOR, College Station, Texas BULLETIN NO. 595 NOVEMBER 1940 -- IODINE IN DRINKING WATERS, VEGETABLES..., COTTONSEED MEAL, AND ROUGEIAGES ! .I rq?,\\?Y - AGRICULTURAL AND MECHANICAL COLLEGE OF TEXAS T. 0. WALTON, President A96-1140-7M-LJ.80 5 [Blank Page in Original Bulletin] Iodine was determined in nearly 500 samples of city and rural drinking waters...

Fudge, J. F. (Joseph Franklin); Fraps, G. S. (George Stronach)

1940-01-01T23:59:59.000Z

60

Fouling of reverse osmosis membranes by hydrocarbonated and fluorinated surfactants contained in firefighting water  

E-Print Network [OSTI]

Title: Fouling of reverse osmosis membranes by hydrocarbonated and fluorinated surfactants osmosis efficiently treated the water from fire extinguishment. In this work we focused on the reverse surfactants [1]. Experimental results indicated that electrocoagulation and filtration followed by reverse

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "fluorine iodine phos" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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61

Evaluation of Fluorine-Trapping Agents for Use During Storage of the MSRE Fuel Salt  

SciTech Connect (OSTI)

A fundamental characteristic of the room temperature Molten Salt Reactor Experiment (MSRE) fuel is that the radiation from the retained fission products and actinides interacts with this fluoride salt to produce fluorine gas. The purpose of this investigation was to identify fluorine-trapping materials for the MSRE fuel salt that can meet both the requirement of interim storage in a sealed (gastight) container and the vented condition required for disposal at the Waste Isolation Pilot Plant (WIPP). Sealed containers will be needed for interim storage because of the large radon source that remains even in fuel salt stripped of its uranium content. An experimental program was undertaken to identify the most promising candidates for efficient trapping of the radiolytic fluorine generated by the MSRE fuel salt. Because of the desire to avoid pressurizing the closed storage containers, an agent that traps fluorine without the generation of gaseous products was sought.

Brynestad, J.; Williams, D.F.

1999-05-01T23:59:59.000Z

62

Deep Bed Iodine Sorbent Testing FY 2011 Report  

SciTech Connect (OSTI)

Nuclear fission results in the production of fission products (FPs) and activation products that increasingly interfere with the fission process as their concentrations increase. Some of these fission and activation products tend to evolve in gaseous species during used nuclear fuel reprocessing. Analyses have shown that I129, due to its radioactivity, high potential mobility in the environment, and high longevity (half life of 15.7 million years), can require control efficiencies of up to 1,000x or higher to meet regulatory emission limits. Deep-bed iodine sorption testing has been done to evaluate the performance of solid sorbents for capturing iodine in off-gas streams from nuclear fuel reprocessing plants. The objectives of the FY 2011 deep bed iodine sorbent testing are: (1) Evaluate sorbents for iodine capture under various conditions of gas compositions and operating temperature (determine sorption efficiencies, capacities, and mass transfer zone depths); and (2) Generate data for dynamic iodine sorption modeling. Three tests performed this fiscal year on silver zeolite light phase (AgZ-LP) sorbent are reported here. Additional tests are still in progress and can be reported in a revision of this report or a future report. Testing was somewhat delayed and limited this year due to initial activities to address some questions of prior testing, and due to a period of maintenance for the on-line GC. Each test consisted of (a) flowing a synthetic blend of gases designed to be similar to an aqueous dissolver off-gas stream over the sorbent contained in three separate bed segments in series, (b) measuring each bed inlet and outlet gas concentrations of iodine and methyl iodide (the two surrogates of iodine gas species considered most representative of iodine species expected in dissolver off-gas), (c) operating for a long enough time to achieve breakthrough of the iodine species from at least one (preferably the first two) bed segments, and (d) post-test purging with pure N2 to drive loosely or physisorbed iodine species off of the sorbent. Post-test calculations determine the control efficiencies for each bed, iodine loadings on the sorbent, and mass transfer zone depths. Portions of the iodine-laden sorbent from the first bed of two of the tests have been shipped to SNL for waste form studies. Over the past three years, we have explored a full range of inlet iodine and methyl iodide concentrations ranging from {approx}100 ppb to {approx}100 ppm levels, and shown adequate control efficiencies within a bed depth as shallow as 2 inches for lower concentrations and 4 inches for higher concentrations, for the AgZ-type sorbents. We are now performing a limited number of tests in the NC-77 sorbent from SNL. Then we plan to continue to (a) fill in data gaps needed for isotherms and dynamic sorbent modeling, and (b) test the performance of additional sorbents under development.

Nick Soelberg; Tony Watson

2011-08-01T23:59:59.000Z

63

Summary of FY 2010 Iodine Capture Studies at the INL  

SciTech Connect (OSTI)

Three breakthrough runs using silver mordenite sorbents were conducted and a dynamic sorption capacity estimated based on MeI analysis from a 2" bed. However, it is now believed the data for the first 2 runs is incomplete because the contributions from elemental iodine were not included. Although the only source of iodine was MeI, elemental iodine was generated within the sorbent bed, presumably from a recombination reaction likely catalyzed by silver mordenite. On-line effluent analysis with a GC was only capable of analyzing MeI, not I2. Scrub samples drawn during Run #3, which are specific for I2, show significant levels of I2 being emitted from a partially spent Ag-mordenite bed. By combining MeI and I2 analyses, a well defined total iodine breakthrough curve can be generated for Run #3. At the conclusion of Run #3 (IONEX Ag-900 was the sorbent) the effluent level from Bed 2 was approaching 70% of the feed concentration. The leading bed (Bed 1) had an estimated average loading of 66 mg I/g sorbent, Bed 2's was 52 mg I/g. The corresponding silver utilizations (assuming formation of AgI) were about 59% and 46%, respectively. The spent sorbents are being sent to Sandia National Laboratories for confirmatory analysis of iodine and silver utilization as well as source material for waste form development.

Daryl R. Haefner; Tony L. Watson; Michael G. Jones

2010-08-01T23:59:59.000Z

64

Low sintering temperature glass waste forms for sequestering radioactive iodine  

DOE Patents [OSTI]

Materials and methods of making low-sintering-temperature glass waste forms that sequester radioactive iodine in a strong and durable structure. First, the iodine is captured by an adsorbant, which forms an iodine-loaded material, e.g., AgI, AgI-zeolite, AgI-mordenite, Ag-silica aerogel, ZnI.sub.2, CuI, or Bi.sub.5O.sub.7I. Next, particles of the iodine-loaded material are mixed with powdered frits of low-sintering-temperature glasses (comprising various oxides of Si, B, Bi, Pb, and Zn), and then sintered at a relatively low temperature, ranging from 425.degree. C. to 550.degree. C. The sintering converts the mixed powders into a solid block of a glassy waste form, having low iodine leaching rates. The vitrified glassy waste form can contain as much as 60 wt % AgI. A preferred glass, having a sintering temperature of 500.degree. C. (below the silver iodide sublimation temperature of 500.degree. C.) was identified that contains oxides of boron, bismuth, and zinc, while containing essentially no lead or silicon.

Nenoff, Tina M.; Krumhansl, James L.; Garino, Terry J.; Ockwig, Nathan W.

2012-09-11T23:59:59.000Z

65

E-Print Network 3.0 - atomic iodine laser Sample Search Results  

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

iodine laser Search Powered by Explorit Topic List Advanced Search Sample search results for: atomic iodine laser Page: << < 1 2 3 4 5 > >> 1 JOURNALDE PHYSIQUEIV ColloqueC7,...

66

E-Print Network 3.0 - acex project iodine Sample Search Results  

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

eggs. Sunlight was used as the control. Adults in the quartz-iodine... the rare earth lamp was used as a substitute. Egg hatch for the quartz-iodine lamp and sunlight ... Source:...

67

Light-Induced Passivation of Si by Iodine Ethanol Solution: Preprint  

SciTech Connect (OSTI)

We report on our observations of light-activated passivation of silicon surfaces by iodine-ethanol solution.

Sopori, B.; Rupnowski, P.; Appel, J.; Guhaabiswas, D.; Anderson-Jackson, L.

2009-02-01T23:59:59.000Z

68

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

SciTech Connect (OSTI)

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

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

1994-07-01T23:59:59.000Z

69

Discovery of palladium, antimony, tellurium, iodine, and xenon isotopes  

SciTech Connect (OSTI)

Currently, thirty-eight palladium, thirty-eight antimony, thirty-nine tellurium, thirty-eight iodine, and forty xenon isotopes have been observed and the discovery of these isotopes is described here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

Kathawa, J.; Fry, C.; Thoennessen, M., E-mail: thoennessen@nscl.msu.edu

2013-01-15T23:59:59.000Z

70

Charge-trapping characteristics of fluorinated thin ZrO{sub 2} film for nonvolatile memory applications  

SciTech Connect (OSTI)

The effects of fluorine treatment on the charge-trapping characteristics of thin ZrO{sub 2} film are investigated by physical and electrical characterization techniques. The formation of silicate interlayer at the ZrO{sub 2}/SiO{sub 2} interface is effectively suppressed by fluorine passivation. However, excessive fluorine diffusion into the Si substrate deteriorates the quality of the SiO{sub 2}/Si interface. Compared with the ZrO{sub 2}-based memory devices with no or excessive fluorine treatment, the one with suitable fluorine-treatment time shows higher operating speed and better retention due to less resistance of built-in electric field (formed by trapped electrons) against electron injection from the substrate and smaller trap-assisted tunneling leakage, resulting from improved ZrO{sub 2}/SiO{sub 2} and SiO{sub 2}/Si interfaces.

Huang, X. D., E-mail: eexdhuang@gmail.com, E-mail: laip@eee.hku.hk [Key Laboratory of MEMS of the Ministry of Education, Southeast University, Nanjing 210096 (China); Shi, R. P.; Lai, P. T., E-mail: eexdhuang@gmail.com, E-mail: laip@eee.hku.hk [Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong (China)

2014-04-21T23:59:59.000Z

71

Aging of Iodine-Loaded Silver Mordenite in NO2  

SciTech Connect (OSTI)

Used nuclear fuel facilities need to control and minimize radioactive emissions. Off-gas systems are designed to remove radioactive contaminants, such as 85Kr, 14C, 3H, and 129I. In an off-gas system, any capture material will be exposed to a gas stream for months at a time. This gas stream may be at elevated temperature and could contain water, NOx gas, or a variety of other constituents comprising the dissolver off-gas stream in a nuclear fuel reprocessing plant. For this reason, it is important to evaluate the effects of long-term exposure, or aging, on proposed capture materials. One material under consideration is reduced silver mordenite (Ag0Z), which is recognized for its efficient iodine capture properties. Iodine is immobilized on Ag0Z as AgI, a solid with low volatility (m.p. ? 500°C). The aim of this study was to determine whether extended aging at elevated temperature in a nominally 2% NO2 environment would result in a loss of immobilized iodine from this material due to either physical or chemical changes that might occur during aging. Charges of iodine-loaded reduced silver mordenite (I2-Ag0Z) were exposed to a 2% NO2 environment for 1, 2, 3, and 4 months at 150°C, then analyzed for iodine losses The aging study was completed successfully. The material did not visibly change color or form. The results demonstrate that no significant iodine loss was observed over the course of 4 months of 2% NO2 aging of I2-Ag0Z at elevated temperature within the margin of error and the variability (~10%) in the loading along the beds. This provides assurance that iodine will remain immobilized on Ag0Z during extended online use in an off-gas capture treatment system. Future tests should expose I2-Ag0Z to progressively more complex feed gases in an effort to accurately replicate the conditions expected in a reprocessing facility.

Bruffey, Stephanie H. [ORNL; Jubin, Robert Thomas [ORNL; Patton, Kaara K. [ORNL; Walker Jr, Joseph Franklin [ORNL

2014-04-01T23:59:59.000Z

72

Lanthanum-hexaboride carbon composition for use in corrosive hydrogen-fluorine environments  

DOE Patents [OSTI]

The present invention relates to a structural composition useful in corrosive hydrogen-fluorine environments at temperatures in excess of 1400/sup 0/K. The composition is formed of a isostatically pressed and sintered or a hot-pressed mixture of lanthanum hexaboride particles and about 10 to 30 vol% carbon. The lanthanum-hexaboride reacts with the high-temperature fluorine-containing gases to form an adherent layer of corrosion-inhibiting lanthanum trifluoride on exposed surfaces of the composition. The carbon in the composite significantly strengthens the composite, enhances thermal shock resistance, and significantly facilitates the machining of the composition.

Holcombe, C.E. Jr.; Kovach, L.; Taylor, A.J.

1980-01-22T23:59:59.000Z

73

Method for selectively removing fluorine and fluorine-containing contaminants from gaseous UF/sub 6/. [ClF/sub 3/  

DOE Patents [OSTI]

This invention is a method for effecting preferential removal and immobilization of certain gaseous contaminants from gaseous UF/sub 6/. The contaminants include fluorine and fluorides which are more reactive with CaCO/sub 3/ than is UF/sub 6/. The method comprises contacting the contaminant-carrying UF/sub 6/ with particulate CaCO/sub 3/ at a temperature effecting reaction of the contaminant and the CaCO/sub 3/.

Jones, R.L.; Otey, M.G.; Perkins, R.W.

1980-11-24T23:59:59.000Z

74

Iodine-129 and Iodine-127 speciation in groundwater at the Hanford Site, U.S.: iodate incorporation into calcite  

SciTech Connect (OSTI)

The Hanford Site, the most contaminated nuclear site in the United States, has large radioactive waste plumes containing high 129I levels. The geochemical transport and fate of radioiodine depends largely on its chemical speciation that is greatly affected by environmental factors. This study reports, for the first time, the speciation of stable and radioactive iodine in the groundwater from the Hanford Site. Iodate was the dominant species and accounts for up to 84%, followed by organo-iodine and minimal levels of iodide. The relatively high pH and oxidizing environment may have prevented iodate reduction. Our results identified that calcite precipitation caused by degassing of CO2 during deep groundwater sampling incorporated between 7 to 40% of dissolved iodine (including 127I and 129I) that was originally in the groundwater, transforming dissolved to particulate iodate during sampling. In order to understand the mechanisms underlying iodine incorporation by calcite, laboratory experiments were carried out to replicate this iodine sequestering processes. Two methods were utilized in this study, 1) addition of sodium carbonate; 2) addition of calcium chloride followed by sodium carbonate where the pH was well controlled at ~8.2, which is close to the average pH of Hanford Site groundwater. It was demonstrated that iodate was the main species incorporated into calcite and this incorporation process could be impeded by elevated pH and decreasing ionic strength in groundwater. This study provides critical information for predicting the long-term fate and transport of 129I at the Hanford Site and reveals a potential means for improved remediation strategies of 129I.

Zhang, Saijin [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Xu, Chen [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Creeley, Danielle [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Ho, Yi-Fang [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Li, Hsiu-Ping [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Grandbois, Russell [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Schwehr, Kathy [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science; Kaplan, Daniel I. [Savannah River National Laboratory, Aiken, SC (United States); Yeager, Chris [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); Wellman, Dawn M. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Santschi, Peter H. [Texas A and M Univ. at Galveston, TX (United States). Dept. of Marine Science

2013-07-25T23:59:59.000Z

75

Preparation of Solid Alkaline Fuel Cell Binders Based on Fluorinated Poly(diallyldimethylammonium chloride)s  

E-Print Network [OSTI]

1 Preparation of Solid Alkaline Fuel Cell Binders Based on Fluorinated Poly to be used in a Solid Alkaline Fuel Cell (SAFC) needs to (i) be insoluble in both aqueous solutions,10% > 320 °C). When used in a fuel cell as a binder in the membrane-electrodes assembly (MEA

Paris-Sud XI, Université de

76

Interactions of Fluorine Redistribution and Nitrogen Incorporation with Boron Diffusion in Silicon Dioxide  

E-Print Network [OSTI]

Interactions of Fluorine Redistribution and Nitrogen Incorporation with Boron Diffusion in Silicon Dioxide Mitra Navi and Scott Dunham Department of Electrical and Computer Engineering Boston University diffusion. Gate oxides were grown with nitrogen contents varying from 0 to 1.4%. A series of SIMS mea

Dunham, Scott

77

Hydrothermal transport and deposition of the rare earth elements by fluorine-bearing aqueous liquids  

E-Print Network [OSTI]

ARTICLE Hydrothermal transport and deposition of the rare earth elements by fluorine environmental concerns, have created a great demand for the rare earth elements (REE), and focused considerable Hydrothermal concentration of the rare earth elements (REE) to economic and potentially economic levels has

78

EPR studies on fluorocarbon microspheres. Dynamic polarization of fluorine nuclei and adsorbed He3  

E-Print Network [OSTI]

1033 EPR studies on fluorocarbon microspheres. Dynamic polarization of fluorine nuclei and adsorbed centres paramagné- tiques électroniques dans les microbilles de fluorocarbone. Ces centres sont des.8 1018/cc) of electronic paramagnetic centres in microspheres of fluorocarbon. These centres are peroxy

Paris-Sud XI, Université de

79

Response to Comment on “Iodine-129 and Iodine-127 Speciation in Groundwater at Hanford Site, U.S.: Iodate Incorporation into Calcite”  

SciTech Connect (OSTI)

In his comment on our paper “Iodine-129 and Iodine-127 Speciation in Groundwater at Hanford Site, U.S.: Iodate Incorporation into Calcite”, Lu specified three concerns for Zhang et al’s study,1 including (1) precipitation mechanism (degassing vs freezing), (2) analytical methods, and (3) mass balance control. In response, comparative and comprehensive discussions on the precipitation mechanisms and iodine incorporation can be found in the paper, as well as below. This includes additional experiments of iodine distribution and speciation in calcite precipitates. In addition, the measurements of total iodine in soils/sediment were clarified below as well. The calculations on mass balance in this comment were clarified by using correct data sets. Lu proposed that freezing samples

Zhang, Saijin; Xu, Chen; Creeley, Danielle; Ho, Yi-Fang; Li, Hsiu-Ping; Grandbois, Russell; Schwehr, Kathy; Kaplan, D. I.; Yeager, Chris; Wellman, Dawn M.; Santschi, Peter H.

2013-11-04T23:59:59.000Z

80

Desorption and sublimation kinetics for fluorinated aluminum nitride surfaces  

SciTech Connect (OSTI)

The adsorption and desorption of halogen and other gaseous species from surfaces is a key fundamental process for both wet chemical and dry plasma etch and clean processes utilized in nanoelectronic fabrication processes. Therefore, to increase the fundamental understanding of these processes with regard to aluminum nitride (AlN) surfaces, temperature programmed desorption (TPD) and x-ray photoelectron spectroscopy (XPS) have been utilized to investigate the desorption kinetics of water (H{sub 2}O), fluorine (F{sub 2}), hydrogen (H{sub 2}), hydrogen fluoride (HF), and other related species from aluminum nitride thin film surfaces treated with an aqueous solution of buffered hydrogen fluoride (BHF) diluted in methanol (CH{sub 3}OH). Pre-TPD XPS measurements of the CH{sub 3}OH:BHF treated AlN surfaces showed the presence of a variety of Al-F, N-F, Al-O, Al-OH, C-H, and C-O surfaces species in addition to Al-N bonding from the AlN thin film. The primary species observed desorbing from these same surfaces during TPD measurements included H{sub 2}, H{sub 2}O, HF, F{sub 2}, and CH{sub 3}OH with some evidence for nitrogen (N{sub 2}) and ammonia (NH{sub 3}) desorption as well. For H{sub 2}O, two desorption peaks with second order kinetics were observed at 195 and 460?°C with activation energies (E{sub d}) of 51?±?3 and 87?±?5?kJ/mol, respectively. Desorption of HF similarly exhibited second order kinetics with a peak temperature of 475?°C and E{sub d} of 110?±?5?kJ/mol. The TPD spectra for F{sub 2} exhibited two peaks at 485 and 585?°C with second order kinetics and E{sub d} of 62?±?3 and 270?±?10?kJ/mol, respectively. These values are in excellent agreement with previous E{sub d} measurements for desorption of H{sub 2}O from SiO{sub 2} and AlF{sub x} from AlN surfaces, respectively. The F{sub 2} desorption is therefore attributed to fragmentation of AlF{sub x} species in the mass spectrometer ionizer. H{sub 2} desorption exhibited an additional high temperature peak at 910?°C with E{sub d}?=?370?±?10?kJ/mol that is consistent with both the dehydrogenation of surface AlOH species and H{sub 2} assisted sublimation of AlN. Similarly, N{sub 2} exhibited a similar higher temperature desorption peak with E{sub d}?=?535?±?40?kJ/mol that is consistent with the activation energy for direct sublimation of AlN.

King, Sean W., E-mail: sean.king@intel.com; Davis, Robert F. [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States); Nemanich, Robert J. [Department of Physics, North Carolina State University, Raleigh, North Carolina 27695 (United States)

2014-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Iodine Loading of NO Aged Silver Exchanged Mordenite  

SciTech Connect (OSTI)

In an off-gas treatment system for used nuclear fuel processing, a solid sorbent will typically be exposed to a gas stream for months at a time. This gas stream may be at elevated temperature and could contain water vapor, gaseous nitrogen oxides (NO{sub x}), nitric acid vapors, and a variety of other constituents. For this reason, it is important to evaluate the effects of long-term exposure, or aging, on proposed sorbents. Silver exchanged mordenite (AgZ) is being studied at Oak Ridge National Laboratory (ORNL) to determine its iodine sorption capacity after long term exposure to increasingly more complex chemical environments. Studies previously conducted at ORNL investigated the effects of aging reduced silver exchanged mordenite (Ag{sup 0}Z) in dry air, moist air, and NO2. This study investigated the effects of extended exposure to nitric oxide (NO) gas on the iodine capture performance of Ag{sup 0}Z. A deep bed of Ag{sup 0}Z was aged in a 1% nitric oxide (NO) air stream, and portions of the bed were removed at pre-determined intervals. After being removed from the NO stream, each sample was loaded with iodine in a thin bed configuration. These samples were analyzed by neutron activation analysis (NAA) to quantify the iodine content in the sample. Samples were removed at one week and one month. A 78% decrease in sample capacity was seen after one week of exposure, with no further decrease observed after 1 month of aging. The observed loss in capacity is larger in magnitude than previous studies exposing Ag{sup 0}Z to dry air, moist air, or NO2 gas. The aging study was terminated after one month and repeated; this successfully demonstrated the reproducibility of the results.

Patton, K. K. [ORNL; Bruffey, S. H. [ORNL; Jubin, J. T. [ORNL; Walker, Jr., J. F. [ORNL

2014-09-30T23:59:59.000Z

82

Radioactive Iodine and Krypton Control for Nuclear Fuel Reprocessing Facilities  

SciTech Connect (OSTI)

The removal of volatile radionuclides generated during used nuclear fuel reprocessing in the US is almost certain to be necessary for the licensing of a reprocessing facility in the US. Various control technologies have been developed, tested, or used over the past 50 years for control of volatile radionuclide emissions from used fuel reprocessing plants. The US DOE has sponsored, since 2009, an Off-gas Sigma Team to perform research and development focused on the most pressing volatile radionuclide control and immobilization problems. In this paper, we focus on the control requirements and methodologies for 85Kr and 129I. Numerous candidate technologies have been studied and developed at laboratory and pilot-plant scales in an effort to meet the need for high iodine control efficiency and to advance alternatives to cryogenic separations for krypton control. Several of these show promising results. Iodine decontamination factors as high as 105, iodine loading capacities, and other adsorption parameters including adsorption rates have been demonstrated under some conditions for both silver zeolite (AgZ) and Ag-functionalized aerogel. Sorbents, including an engineered form of AgZ and selected metal organic framework materials (MOFs), have been successfully demonstrated to capture Kr and Xe without the need for separations at cryogenic temperatures.

N. R. Soelberg; J. D. Law; T. G. Garn; M. Greenhalgh; R. T. Jubin; P. Thallapally; D. M. Strachan

2013-08-01T23:59:59.000Z

83

Transition of Iodine Analysis to Accelerator Mass Spectrometry  

SciTech Connect (OSTI)

This NA 22 funded research project investigated the transition of iodine isotopic analyses from thermal ionization mass spectrometry (TIMS) to an accelerator mass spectrometry (AMS) system. Previous work (Fiscal Year 2010) had demonstrated comparable data from TIMS and AMS. With AMS providing comparable data with improved background levels and vastly superior sample throughput, improvement in the sample extraction from environmental sample matrices was needed to bring sample preparation throughput closer to the operation level of the instrument. Previous research used an extraction chemistry that was not optimized for yield or refined for reduced labor to prove the principle. This research was done to find an extraction with better yield using less labor per sample to produce a sample ready for the AMS instrument. An extraction method using tetramethyl ammonium hydroxide (TMAH) was developed for removal of iodine species from high volume air filters. The TMAH with gentle heating was superior to the following three extraction methods: ammonium hydroxide aided by sonication, acidic and basic extraction aided by microwave, and ethanol mixed with sodium hydroxide. Taking the iodine from the extraction solvent to being ready for AMS analysis was accomplished by a direct precipitation, as well as, using silver wool to harvest the iodine from the TMAH. Portions of the same filters processed in FY 2010 were processed again with the improved extraction scheme followed by successful analysis by AMS at the Swiss Federal Institute of Technology. The data favorably matched the data obtained in 2010. The time required for analysis has been reduced over the aqueous extraction/AMS approach developed in FY 2010. For a hypothetical batch of 30 samples, the AMS methodology is about 10 times faster than the traditional gas phase chemistry and TIMS analysis. As an additional benefit, background levels for the AMS method are about 1000 times lower than TIMS. This results from the fundamental mechanisms of ionization in the AMS system and which produces a beneficial cleanup of molecular interferences. Continued clean operation of the extraction process was demonstrated through blank analysis included with all sample sets analyzed. INL work showed improvement on the first year’s demonstration of AMS vs. TIMS. An improved extraction of high volume air filters followed by isotopic analysis by AMS, can be used successfully to make iodine measurements with results comparable to those obtained by filter combustion and TIMS analysis. More progress on the conversion from an extract solution to an AMS sample ready for analysis is still needed. Although the preparation scheme through AMS is already at a higher performing thoughput than TIMS, the chemical preparation cannot match the instrument capability for number of samples per day without further development.

M. L. Adamic; J. E. Olson; D. D. Jenson; J. G. Eisenmenger; M. G. Watrous

2012-09-01T23:59:59.000Z

84

Polymer electrolyte membranes from fluorinated polyisoprene-block-sulfonated polystyrene: Structural evolution with hydration and heating  

SciTech Connect (OSTI)

Small-angle neutron scattering (SANS) and ultra-small-angle X-ray scattering (USAXS) have been used to study the structural changes in fluorinated polyisoprene/sulfonated polystyrene (FISS) diblock copolymers as they evolved from the dry state to the water swollen state. A dilation of the nanometer-scale hydrophilic domains has been observed as hydration increased, with greater dilation occurring in the more highly sulfonated samples or upon hydration at higher temperatures. Furthermore, a decrease in the order in these phase separated structures is observed upon swelling. The glass transition temperatures of the fluorinated blocks have been observed to decrease upon hydration of these materials, and at the highest hydration levels, differential scanning calorimetry (DSC) has shown the presence of tightly bound water. A precipitous drop in the mechanical integrity of the 50% sulfonated materials is also observed upon exceeding the glass transition temperature (Tg), as measured by dynamic mechanical analysis (DMA).

Sodeye, Akinbode [Department of Polymer Science and Engineering, University of Massachusetts; Huang, Tianzi [University of Tennessee, Knoxville (UTK); Gido, Samuel [University of Massachusetts, Amherst; Mays, Jimmy [ORNL

2011-01-01T23:59:59.000Z

85

Asymmetrical Self-assembly From Fluorinated and Sulfonated Block Copolymers in Aqueous Media  

SciTech Connect (OSTI)

Block copolymers of fluorinated isoprene and partially sulfonated styrene form novel tapered rods and ribbon-like micelles in aqueous media due to a distribution of sulfonation sites and a large Flory-Huggins interaction parameter. A combination of microscopy, light scattering, and simulation demonstrates the presence of these unique nanostructures. This study sheds light on the micellization behavior of amphiphilic block polymers by revealing a new mechanism of self-assembly.

Wang, Xiaojun [ORNL; Hong, Kunlun [ORNL; Baskaran, Durairaj [University of Tennessee, Knoxville (UTK); Goswami, Monojoy [ORNL; Sumpter, Bobby G [ORNL; Mays, Jimmy [ORNL

2011-01-01T23:59:59.000Z

86

Some Investigations of the Reaction of Activated Charcoal with Fluorine and Uranium Hexafluoride  

SciTech Connect (OSTI)

The Molten Salt Reactor Experiment (MSRE) at Oak Ridge National Laboratory has been shut down since 1969, when the fuel salt was drained from the core into two Hastelloy N drain tanks at the reactor site. Over time, fluorine (F{sub 2}) and uranium hexafluoride (UF{sub 6}) moved from the salt through the gas piping to a charcoal bed, where they reacted with the activated charcoal. Some of the immediate concerns related to the migration of F{sub 2} and UF{sub 6} to the charcoal bed were the possibility of explosive reactions between the charcoal and F{sub 2}, the existence of conditions that could induce a criticality accident, and the removal and recovery of the fissile uranium from the charcoal. This report addresses the reactions and reactivity of species produced by the reaction of fluorine and activated charcoal and between charcoal and F{sub 2}-UF{sub 6} gas mixtures in order to support remediation of the MSRE auxiliary charcoal bed (ACB) and the recovery of the fissile uranium. The chemical identity, stoichiometry, thermochemistry, and potential for explosive decomposition of the primary reaction product, fluorinated charcoal, was determined.

Del Cul, G.D.; Fiedor, J.N.; Simmons, D.W.; Toth, L.M.; Trowbridge, L.D.; Williams

1998-09-01T23:59:59.000Z

87

Investigation of silver electrodeposition on polycrystalline platinum by iodine chemisorption  

E-Print Network [OSTI]

Qb)ja'A (12) Silver electrodeposition onto the I-pretreated polycrystalline Pt electrode was done using 2 mM AgC104 in 1 M H2SO4. Under these conditions, Ag deposition consists of two underpotential deposition peaks at 0. 65 and 0. 50 V (peaks 1...INVESTIGATION OF SILVER ELECIRODEPOSITION ON POLYCRYSTALLINE PLATINUM BY IODINE CHEMISORPTION A Thesis by JOHN EUGENE HARRIS Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements...

Harris, John Eugene

1988-01-01T23:59:59.000Z

88

Experimental Effects of Atomic Oxygen on the Development of an Electric Discharge Oxygen Iodine Laser  

E-Print Network [OSTI]

state I. Conventionally, a two-phase (gas-liquid) chemistry singlet oxygen generator (SOG) producesExperimental Effects of Atomic Oxygen on the Development of an Electric Discharge Oxygen Iodine of the electric discharge iodine laser continues, the role of oxygen atoms downstream of the discharge region

Carroll, David L.

89

Iodine stabilization of a diode laser in the optical communication band  

E-Print Network [OSTI]

Iodine stabilization of a diode laser in the optical communication band Hsiang-Chen Chui and Sen September 23, 2004 The iodine molecule has frequently been used as a frequency reference from the green provides a simple, compact, and high-performance frequency reference in the optical communication band

Shy,Jow-Tsong

90

Roles of Naturally Occurring Bacteria in Controlling Iodine-129 Mobility in Subsurface Soils  

E-Print Network [OSTI]

Stable iodine 129I Radioactive iodine-129 238U Uranium-238 ABTS 2, 2’-azino-bis-3-ethylbenzothiazoline-6-sulphonic acid ATP Adenosine-5'-triphosphate Br- Bromide Cl- Chloride CoA Coenzyme A DOE Department of Energy DOE-EM Department... 5.5 Discussion ................................................................................ 95 VI SUMMARY ......................................................................................... 100 6.1 Accumulation of I...

Li, Hsiu-Ping

2012-10-19T23:59:59.000Z

91

Soil Iodine Determination in Deccan Syneclise, India: Implications for Near Surface Geochemical Hydrocarbon Prospecting  

SciTech Connect (OSTI)

The association of iodine with organic matter in sedimentary basins is well documented. High iodine concentration in soils overlying oil and gas fields and areas with hydrocarbon microseepage has been observed and used as a geochemical exploratory tool for hydrocarbons in a few studies. In this study, we measure iodine concentration in soil samples collected from parts of Deccan Syneclise in the west central India to investigate its potential application as a geochemical indicator for hydrocarbons. The Deccan Syneclise consists of rifted depositional sites with Gondwana-Mesozoic sediments up to 3.5 km concealed under the Deccan Traps and is considered prospective for hydrocarbons. The concentration of iodine in soil samples is determined using ICP-MS and the values range between 1.1 and 19.3 ppm. High iodine values are characteristic of the northern part of the sampled region. The total organic carbon (TOC) content of the soil samples range between 0.1 and 1.3%. The TOC correlates poorly with the soil iodine (r{sup 2} < 1), indicating a lack of association of iodine with the surficial organic matter and the possibility of interaction between the seeping hydrocarbons and soil iodine. Further, the distribution pattern of iodine compares well with two surface geochemical indicators: the adsorbed light gaseous hydrocarbons (methane through butane) and the propane-oxidizing bacterial populations in the soil. The integration of geochemical observations show the occurrence of elevated values in the northern part of the study area, which is also coincident with the presence of exposed dyke swarms that probably serve as conduits for hydrocarbon microseepage. The corroboration of iodine with existing geological, geophysical, and geochemical data suggests its efficacy as one of the potential tool in surface geochemical exploration of hydrocarbons. Our study supports Deccan Syneclise to be promising in terms of its hydrocarbon prospects.

Mani, Devleena, E-mail: devleenatiwari@ngri.res.in [National Geophysical Research Institute (Council of Scientific and Industrial Research) (India); Kumar, T. Satish [Oil India Limited (India); Rasheed, M. A.; Patil, D. J.; Dayal, A. M.; Rao, T. Gnaneshwar; Balaram, V. [National Geophysical Research Institute (Council of Scientific and Industrial Research) (India)

2011-03-15T23:59:59.000Z

92

Determination of Iodine-129 in Low Level Radioactive Wastes - 13334  

SciTech Connect (OSTI)

For the radioactivity determination of {sup 129}I in the radioactive wastes, alkali fusion and anion-exchange resin separation methods, which are sample pretreatment methods, have been investigated in this study. To separate and quantify the {sup 129}I radionuclide in an evaporator bottom and spent resin, the radionuclide was chemically leached from the wastes and adsorbed on an anion exchange resin at pH 4, 7, 9. In the case of dry active waste and another solid type, the alkali fusion method was applied. KNO{sub 3} was added as a KOH and oxidizer to the wastes. It was then fused at 450 deg. C for 1 hour. The radioactivity of the separated iodine was measured with a low energy gamma spectrometer after the sample pretreatment. Finally, it was confirmed that the recovery rate of the iodine for the alkali fusion method was 83.6±3.8%, and 86.4±1.6% for the anionic exchange separation method. (authors)

Choi, K.C.; Ahn, J.H.; Park, Y.J.; Song, K.S. [Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daejeon, 305-600 (Korea, Republic of)] [Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, Daejeon, 305-600 (Korea, Republic of)

2013-07-01T23:59:59.000Z

93

Storage of LWR spent fuel in air. Volume 3, Results from exposure of spent fuel to fluorine-contaminated air  

SciTech Connect (OSTI)

The Behavior of Spent Fuel in Storage (BSFS) Project has conducted research to develop data on spent nuclear fuel (irradiated U0{sub 2}) that could be used to support design, licensing, and operation of dry storage installations. Test Series B conducted by the BSFS Project was designed as a long-term study of the oxidation of spent fuel exposed to air. It was discovered after the exposures were completed in September 1990 that the test specimens had been exposed to an atmosphere of bottled air contaminated with an unknown quantity of fluorine. This exposure resulted in the test specimens reacting with both the oxygen and the fluorine in the oven atmospheres. The apparent source of the fluorine was gamma radiation-induced chemical decomposition of the fluoro-elastomer gaskets used to seal the oven doors. This chemical decomposition apparently released hydrofluoric acid (HF) vapor into the oven atmospheres. Because the Test Series B specimens were exposed to a fluorine-contaminated oven atmosphere and reacted with the fluorine, it is recommended that the Test Series B data not be used to develop time-temperature limits for exposure of spent nuclear fuel to air. This report has been prepared to document Test Series B and present the collected data and observations.

Cunningham, M.E.; Thomas, L.E.

1995-06-01T23:59:59.000Z

94

Iodine Adsorption on Ion-Exchange Resins and Activated Carbons– Batch Testing  

SciTech Connect (OSTI)

Iodine sorption onto seven resins and six carbon materials was evaluated using water from well 299-W19-36 on the Hanford Site. These materials were tested using a range of solution-to-solid ratios. The test results are as follows: • The efficacy of the resin and granular activated carbon materials was less than predicted based on manufacturers’ performance data. It is hypothesized that this is due to the differences in speciation previously determined for Hanford groundwater. • The sorption of iodine is affected by the iodine species in the source water. Iodine loading on resins using source water ranged from 1.47 to 1.70 µg/g with the corresponding Kd values from 189.9 to 227.0 mL/g. The sorption values when the iodine is converted to iodide ranged from 2.75 to 5.90 µg/g with the corresponding Kd values from 536.3 to 2979.6 mL/g. It is recommended that methods to convert iodine to iodide be investigated in fiscal year (FY) 2015. • The chemicals used to convert iodine to iodate adversely affected the sorption of iodine onto the carbon materials. Using as-received source water, loading and Kd values ranged from 1.47 to 1.70 µg/g and 189.8 to 226.3 mL/g respectively. After treatment, loading and Kd values could not be calculated because there was little change between the initial and final iodine concentration. It is recommended the cause of the decrease in iodine sorption be investigated in FY15. • In direct support of CH2M HILL Plateau Remediation Company, Pacific Northwest National Laboratory has evaluated samples from within the 200W pump and treat bioreactors. As part of this analysis, pictures taken within the bioreactor reveal a precipitate that, based on physical properties and known aqueous chemistry, is hypothesized to be iron pyrite or chalcopyrite, which could affect iodine adsorption. It is recommended these materials be tested at different solution-to-solid ratios in FY15 to determine their effect on iodine sorption.

Parker, Kent E.; Golovich, Elizabeth C.; Wellman, Dawn M.

2014-09-30T23:59:59.000Z

95

Composition for use in high-temperature hydrogen-fluorine environments and method for making the composition  

DOE Patents [OSTI]

The present invention relates to a composition particularly suitable for use as structural components subject to high-temperature environments containing gaseous hydrogen and fluorine. The composition of the present invention consists essentially of lanthanum hexaboride-molybdenum diboride with dispersed silicon. The composition is formed by hot pressing a powder mixture of lanthanum hexaboride as the major constituent and molybdenum disilicide. This composition exhibits substantial resistance to thermal shock and corrosion in environments containing hydrogen and fluorine gases at material surface temperatures up to about 1850/sup 0/K. Upon exposure of the hot-pressed composition to high-temperature environments containing fluorine gases, a highly protective layer of lanthanum trifluoride containing dispersed molybdenum is formed on exposed surfaces of the composition.

Kovach, L.; Holcombe, C.E.

1980-08-22T23:59:59.000Z

96

Polymer electrolyte membranes from fluorinated polyisoprene-block-sulfonated polystyrene: Microdomain orientation by external field  

SciTech Connect (OSTI)

In this study, block copolymer ionomers of the cesium salt (20 mol %) of fluorinated polyisoprene-blocksulfonated polystyrene were spin cast into membranes and annealed under an electric field ofw40 V/mm at 130 C for 24 h. The effect of this treatment was a 2.5 times increase in the ionic conductivity as measured by electrochemical impedance spectroscopy, under all humidity conditions measured. This can be attributed to the increased connectivity of the ionic domains of the block copolymers. This E-field alignment technique may thus find application in the fabrication of nanostructured polyelectrolytes with enhanced charge transport capacity.

Sodeye, Akinbode [Department of Polymer Science and Engineering, University of Massachusetts; Huang, Tianzi [University of Tennessee, Knoxville (UTK); Gido, Samuel [University of Massachusetts, Amherst; Mays, Jimmy [ORNL

2011-01-01T23:59:59.000Z

97

Fluorine doping in dilute magnetic semiconductor Sn1&ndash;xFexO2. | 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 ProposedUsing ZirconiaPolicyFeasibilityFieldMinds" |beam damage inPortalFluorine

98

Systematic study of iodine nuclei in A?125 mass region  

SciTech Connect (OSTI)

Excited states of {sup 127}I were populated via {sup 124}Sn({sup 7}Li,{sup 4}n?){sup 127}I fusion-evaporation reaction at beam energy of 33 MeV. Multipolarities of several transitions were determined and spins of corresponding states have been confirmed. The band-head spin and parity of an already reported band at 2901.2 keV has been confirmed. Based on the observed characteristic features and by comparing with the systematics of odd mass iodine nuclei, a ?g{sub 7/2}??h{sub 11/2}{sup 2} configuration has been proposed for this band. The experimental B(M1)/B(E2) values for ?g{sub 7/2} band were compared with the theoretical results of semi classical model of Frauendorf and Donau and found in well agreement.

Sharma, H. P.; Chakraborty, S.; Kumar, A. [Department of Physics, Banaras Hindu University, Varanasi-221005 (India); Banerjee, P. [Division of Nuclear Physics, Saha Institute of Nuclear Physics, Kolkata-700064 (India); Ganguly, S. [Department of Physics, Chandernagore College, Chandannagar-721136 (India); Muralithar, S.; Singh, R. P. [Inter University Accelerator Center, New Delhi-110067 (India); Kumar, A.; Kaur, N. [Department of Physics, Punjab University, Chandigarh-160014 (India); Kumar, S. [Department of Physics and Astrophysics, University of Delhi, New Delhi-110067 (India); Chaturvedi, L. [Department of Pure and Applied Physics, Guru Ghasidas Vishwavidyalaya, Bilaspur-495009 (India); Jain, A. K. [Department of Physics, Indian Institute of Technology, Roorkee-247667 (India); Laxminarayan, S. [Department of Physics, Andhra University, Visakhapatnam-530003 (India)

2014-08-14T23:59:59.000Z

99

ALTERNATIVE FLOWSHEETS FOR THE SULFUR-IODINE THERMOCHEMICAL HYDROGEN CYCLE  

SciTech Connect (OSTI)

OAK-B135 A hydrogen economy will need significant new sources of hydrogen. Unless large-scale carbon sequestration can be economically implemented, use of hydrogen reduces greenhouse gases only if the hydrogen is produced with non-fossil energy sources. Nuclear energy is one of the limited options available. One of the promising approaches to produce large quantities of hydrogen from nuclear energy efficiently is the Sulfur-Iodine (S-I) thermochemical water-splitting cycle, driven by high temperature heat from a helium Gas-Cooled Reactor. They have completed a study of nuclear-driven thermochemical water-splitting processes. The final task of this study was the development of a flowsheet for a prototype S-I production plant. An important element of this effort was the evaluation of alternative flowsheets and selection of the reference design.

BROWN,LC; LENTSCH,RD; BESENBRUCH,GE; SCHULTZ,KR; FUNK,JE

2003-02-01T23:59:59.000Z

100

Sulfur-Iodine Integrated Lab Scale Experiment Development  

SciTech Connect (OSTI)

The sulfur-iodine (SI) cycle was deermined to be the best cycle for coupling to a high temperature reactor (HTR) because of its high efficiency and potential for further improvement. The Japanese Atomic Energy Agency (JAEA) has also selected the SI process for further development and has successfully completed bench-scale demonstrations of the SI process at atmospheric pressure. JEA also plans to proceed with pilot-scale demonstrations of the SI process and eventually plans to couple an SI demonstration plant to its High Temperature Test Reactor (HHTR). As part of an international NERI project, GA, SNL, and the Frech Commissariat L'Energie Atomique performed laboratory-scale demonstrations of the SI process at prototypical temperatures and pressures. This demonstration was performed at GA in San Diego, CA and concluded in April 2009.

Russ, Ben

2011-05-27T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Method for fluorination of actinide fluorides and oxyfluorides using O/sub 2/F/sub 2/  

DOE Patents [OSTI]

The present invention relates generally to methods of fluorination and more particularly to the use of O/sub 2/F/sub 2/ for the preparation of actinide hexafluorides, and for the extraction of deposited actinides and fluorides and oxyfluorides thereof from reaction vessels. The experiments set forth hereinabove demonstrate that the room temperature or below use of O/sub 2/F/sub 2/ will be highly beneficial for the preparation of pure actinide hexafluorides from their respective tetrafluorides without traces of HF being present as occurs using other fluorinating agents: and decontamination of equipment previously exposed to actinides: e.g., walls, feed lines, etc.

Eller, P.G.; Malm, J.G.; Penneman, R.A.

1984-08-01T23:59:59.000Z

102

Doping efficiency of single and randomly stacked bilayer graphene by iodine adsorption  

SciTech Connect (OSTI)

We report on the efficiency and thermal stability of p-doping by iodine on single and randomly stacked, weakly coupled bilayer polycrystalline graphene, as directly measured by photoelectron emission microscopy. The doping results in work function value increase of 0.4–0.5?eV, with a higher degree of iodine uptake by the bilayer (2%) as compared to the single layer (1%) suggesting iodine intercalation in the bilayer. The chemistry of iodine is identified accordingly as I{sub 3}{sup ?} and I{sub 5}{sup ?} poly iodide anionic complexes with slightly higher concentration of I{sub 5}{sup ?} in bilayer than monolayer graphene, likely attributed to differences in doping mechanisms. Temperature dependent in-situ annealing of the doped films demonstrated that the doping remains efficient up to 200?°C.

Kim, HoKwon; Renault, Olivier; Rouchon, Denis; Mariolle, Denis; Chevalier, Nicolas [Univ. Grenoble Alpes, F-38000 Grenoble, France and CEA, LETI, MINATEC Campus, F-38054 Grenoble (France); Tyurnina, Anastasia; Simonato, Jean-Pierre; Dijon, Jean [Univ. Grenoble Alpes, F-38000 Grenoble, France and CEA, LITEN, Minatec Campus, F-38054 Grenoble (France)

2014-07-07T23:59:59.000Z

103

Contrast-Medium-Enhanced Digital Mammography: Contrast vs. Iodine Concentration Phantom Calibration  

SciTech Connect (OSTI)

This work deals with the application of the contrast-medium-enhanced digital subtraction mammography technique in order to calibrate the contrast level in subtracted phantom images as function of iodine concentration to perform dynamic studies of the contrast-medium uptake in the breast. Previously optimized dual-energy temporal subtraction modalities were used (a) to determine radiological parameters for a dynamic clinical study composed of 1 mask+3 post-contrast images limiting the total mean glandular dose to 2.5 mGy, and (b) to perform a contrast vs iodine concentration calibration using a custom-made phantom. Calculated exposure values were applied using a commercial full-field digital mammography unit. Contrast in subtracted phantom images (one mask and one post-CM) is linear as function of iodine concentration, although the sensitivity (contrast per iodine concentration) decreases beyond 8 mg/mL. This calibration seems to apply only to thin and normal thickness breasts.

Rosado-Mendez, I.; Brandan, M. E. [Instituto de Fisica, Universidad Nacional Autonoma de Mexico, 04510 DF (Mexico); Villasenor, Y. [Instituto Nacional de Cancerologia (INCan), Av. San Fernando 22, Tlalpan 14080 DF (Mexico); Benitez-Bribiesca, L. [Centro Medico Nacional Siglo XXI, Av. Cuauhtemoc 330, Col. Doctores 06725 DF (Mexico)

2008-08-11T23:59:59.000Z

104

Sorption and transport of iodine species in sediments from the Savannah River and Hanford Sites  

E-Print Network [OSTI]

Sorption and transport of iodine species in sediments from the Savannah River and Hanford Sites-iodoaniline) in sediments collected at the Savannah River and Hanford Sites, where anthropogenic 129 I from

Hu, Qinhong "Max"

105

THE FIRST FLUORINE ABUNDANCE DETERMINATIONS IN EXTRAGALACTIC ASYMPTOTIC GIANT BRANCH CARBON STARS  

SciTech Connect (OSTI)

Fluorine ({sup 19}F) abundances (or upper limits) are derived in six extragalactic asymptotic giant branch (AGB) carbon stars from the HF(1-0) R9 line at 2.3358 {mu}m in high-resolution spectra. The stars belong to the Local Group galaxies, Large Magellanic Cloud, Small Magellanic Cloud, and Carina dwarf spheroidal, spanning more than a factor of 50 in metallicity. This is the first study to probe the behavior of F with metallicity in intrinsic extragalactic C-rich AGB stars. Fluorine could be measured only in four of the target stars, showing a wide range in F enhancements. Our F abundance measurements together with those recently derived in Galactic AGB carbon stars show a correlation with the observed carbon and s-element enhancements. The observed correlations, however, display a different dependence on the stellar metallicity with respect to theoretical predictions in low-mass, low-metallicity AGB models. We briefly discuss the possible reasons for this discrepancy. If our findings are confirmed in a larger number of metal-poor AGBs, the issue of F production in AGB stars will need to be revisited.

Abia, C.; Cristallo, S.; Dominguez, I. [Dpto. Fisica Teorica y del Cosmos, Universidad de Granada, 18071 Granada (Spain); Cunha, K.; Smith, V. V. [National Optical Astronomy Observatory, P.O. Box 26732, Tucson, AZ 85726 (United States); De Laverny, P.; Recio-Blanco, A. [University of Nice-Sophia Antipolis, CNRS (UMR 6202), Cassiopee, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France); Straniero, O., E-mail: cabia@ugr.es [INAF-Osservatorio di Collurania, 64100 Teramo (Italy)

2011-08-10T23:59:59.000Z

106

Effect of a fluorinated nickel surface on the decomposition of perfluorodiethoxymethane  

SciTech Connect (OSTI)

Perfluoropolyethers (PFPEs) are a commercial class of lubricants widely used in computer and aerospace industries. This is a study of the degradation of a perfluorinated ether in the presence of a metal fluoride. Perfluorodiethoxymethane (PFDEM) is a PFPE analog. Temperature programmed desorption shows no contribution of PFDEM toward nickel fluoride on an NiF{sub 2} surface obtained by CF{sub 3}I adsorption. Higher coverages of nickel fluoride do not show any evidence of NiF{sub 2} contribution from PFDEM. The results do not agree with the idea that a fluorinated surface might induce decomposition of PFPEs, leading to addition fluoride formation on the surface. The metal fluoride bond strength is not a legitimate concern for decomposition of PFE lubricants. Impurity in PFPEs might be the cause of initial surface fluoridation leading to breakdown of PFPEs which could cause additional metal fluoride formation. It is clear that the reaction of PFPEs with metals does not involve a direct formation of a simple M-F bond; results do not show any C-F bond cleavage of the fluorinated ether and do not support a proposed autocatalytic mechanism.

Sreevidya, S.

1995-11-09T23:59:59.000Z

107

Development of Efficient Flowsheet and Transient Modeling for Nuclear Heat Coupled Sulfur Iodine Cyclefor Hydrogen Production  

SciTech Connect (OSTI)

The realization of the hydrogen as an energy carrier for future power sources relies on a practical method of producing hydrogen in large scale with no emission of green house gases. Hydrogen is an energy carrier which can be produced by a thermochemical water splitting process. The Sulfur-Iodine (SI) process is an example of a water splitting method using iodine and sulfur as recycling agents.

Shripad T. Revankar; Nicholas R. Brown; Cheikhou Kane; Seungmin Oh

2010-05-01T23:59:59.000Z

108

NO2 Aging and Iodine Loading of Silver-Functionalized Aerogels  

SciTech Connect (OSTI)

Off-gas treatment systems in used fuel reprocessing which use fixed-bed adsorbers are typically designed to operate for an extended period of time before replacement or regeneration of the adsorbent. During this time, the sorbent material will be exposed to the off-gas stream. Exposure could last for months, depending on the replacement cycle time. The gas stream will be at elevated temperature and will possibly contain a mixture of water vapor, NOx, nitric acid vapors, and a variety of other constituents in addition to the radionuclides of capture interest. A series of studies were undertaken to evaluate the effects of long-term exposure, or aging, on proposed iodine sorbent materials under increasingly harsh off-gas conditions. Previous studies have evaluated the effects of up to 6 months of aging under dry air and under humid air conditions on the iodine loading behavior of Ag0-functionalized aerogels. This study examines the effects of extended exposure (up to 6 months) to NO2 on the iodine loading capacity of Ag0- functionalized aerogels. Material aged for 1 and 2 months appeared to have a similar total loading capacity to fresh material. Over an aging period of 4 months, a loss of approximately 15% of the total iodine capacity was seen. The iodine capacity loss on silver-functionalized aerogels due to NO2 was smaller than the iodine capacity loss due to humid or dry air aging.

Patton, K K [ORNL; Bruffey, S H [ORNL; Walker, J F [ORNL; Jubin, R T [ORNL

2014-07-31T23:59:59.000Z

109

Fluorine Abundance Variations in Red Giants of the Globular Cluster M4 and Early-Cluster Chemical Pollution  

E-Print Network [OSTI]

We present fluorine abundances in seven red-giant members of the globular cluster M4 (NGC 6121). These abundances were derived from the HF (1--0) R9 line at 2.3357 microns in high-resolution infrared spectra obtained with the Phoenix spectrograph on Gemini-South. Many abundances in the target stars have been studied previously, so that their overall abundance distributions are well-mapped. The abundance of fluorine is found to vary by more than a factor of 6, with the F-19 variations being correlated with the already established oxygen variations, and anti-correlated with the sodium and aluminium variations. In this paper we thus add fluorine to the list of elements known to vary in globular cluster stars, and this provides further evidence that H-burning is the root cause of the chemical inhomegeneities. The fact that F-19 is found to decrease in the M4 stars, as the signature of H-burning appears, indicates that the polluting stars must have masses greater than about 3.5 solar masses, as less massive stars than this should produce, not destroy, fluorine.

V. V. Smith; K. Cunha; I. I. Ivans; J. C. Lattanzio; K. H. Hinkle

2005-06-30T23:59:59.000Z

110

Synthesis, structural and magnetic characterisation of the fully fluorinated compound 6H-BaFeO{sub 2}F  

SciTech Connect (OSTI)

The compound 6H-BaFeO{sub 2}F (P6{sub 3}/mmc) was synthesised by the low temperature fluorination of 6H-BaFeO{sub 3-d} using polyvinylidenedifluoride (PVDF) as a fluorination agent. Structural characterisation by XRD and NPD suggests that the local positions of the oxygen and fluorine atoms vary with no evidence for ordering on the anion sites. This compound shows antiferromagnetic ordering at room temperature with antiparallel alignment of the magnetic moments along the c-axis. The use of PVDF also allows the possibility of tuning the fluorine content in materials of composition 6H-BaFeO{sub 3-d}F{sub y} to any value of 0fluorination using PVDF. Black-Right-Pointing-Pointer A structural investigation of the compounds BaFeO{sub 2}F is presented in detail. Black-Right-Pointing-Pointer This analysis suggests differences for the local coordination of O{sup 2-} and F{sup -} anions. Black-Right-Pointing-Pointer H-BaFeO{sub 2}F shows antiferromagnetic ordering at 300 K. Black-Right-Pointing-Pointer The magnetic moments align parallel to the a-axis.

Clemens, Oliver, E-mail: oliverclemens@online.de [School of Chemistry, University of Birmingham, Birmingham B15 2TT (United Kingdom)] [School of Chemistry, University of Birmingham, Birmingham B15 2TT (United Kingdom); Wright, Adrian J.; Berry, Frank J. [School of Chemistry, University of Birmingham, Birmingham B15 2TT (United Kingdom)] [School of Chemistry, University of Birmingham, Birmingham B15 2TT (United Kingdom); Smith, Ronald I. [ISIS Facility, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX (United Kingdom)] [ISIS Facility, Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX (United Kingdom); Slater, Peter R. [School of Chemistry, University of Birmingham, Birmingham B15 2TT (United Kingdom)] [School of Chemistry, University of Birmingham, Birmingham B15 2TT (United Kingdom)

2013-02-15T23:59:59.000Z

111

Nuclear Hydrogen Initiative, Results of the Phase II Testing of Sulfur-Iodine Integrated Lab Scale Experiments  

SciTech Connect (OSTI)

International collaborative effort to construct a laboratory-scale Sulfur-Iodine process capable of producing 100-200 L/hr of hydrogen.

Benjamin Russ; G. Naranjo; R. Moore; W. Sweet; M. Hele; N. Pons

2009-10-30T23:59:59.000Z

112

Iodine-129 separation and determination by neutron activation analysis  

SciTech Connect (OSTI)

A method is described for analysis of /sup 129/I in fission product mixtures originating from fuel reprocessing studies and low-level wastes. The method utilizes conventional iodine valence adjustment and solvent extraction techniques to chemically separate /sup 129/I from most fission products. The /sup 129/I is determined by neutron irradiation and measurement of the 12.4 h /sup 130/I produced by the neutron capture reaction. Special techniques were devised for neutron irradiation of /sup 129/I samples in the pneumatic tube irradiation facilities at the High Flux Isotope (HFIR) and Oak Ridge Research (ORR) Reactors. Chemically separated /sup 129/I is adsorbed on an anion exchange resin column made from an irradiation container. The loaded resin is then irradiated in either of the pneumatic facilities to produce /sup 130/I. Sensitivity of the analysis with the HFIR facility (flux: 5 x 10/sup 14/ n/cm/sup 2//sec) and a 100-second irradiation time is approximately 0.03 nanograms. Samples up to 250 ml in volume can be easily processed.

Bate, L.C.; Stokely, J.R.

1981-01-01T23:59:59.000Z

113

Laboratory weathering and solubility relationships of fluorine and molybdenum in combusted oil shale  

SciTech Connect (OSTI)

Proper management of large volumes of spent oil shale requires an understanding of the mineralogy and the disposal environment chemistry. Simulated laboratory weathering is one method to rapidly and inexpensively assess the long-term potential for spent oil shales to degrade the environment. The objectives of this study were to assess the solubility relationships of fluorine (F) and molybdenum (Mo) in Green River Formation spent oil shale, to examine the mineralogy and leachate chemistry of three combusted oil shales in a laboratory weathering environment using the humidity cell technique, and to examine the data from spent oil shale literature. Combusted oil shales from the Green River Formation and New Albany Shale were used in the examination of the leachate chemistry and mineralogy.

Essington, M.E.; Wills, R.A.; Brown, M.A.

1991-01-01T23:59:59.000Z

114

Impact of fluorine based reactive chemistry on structure and properties of high moment magnetic material  

SciTech Connect (OSTI)

The impact of the fluorine-based reactive ion etch (RIE) process on the structural, electrical, and magnetic properties of NiFe and CoNiFe-plated materials was investigated. Several techniques, including X-ray fluorescence, 4-point-probe, BH looper, transmission electron microscopy (TEM), and electron energy loss spectroscopy (EELS), were utilized to characterize both bulk film properties such as thickness, average composition, Rs, ?, Bs, Ms, and surface magnetic “dead” layers' properties such as thickness and element concentration. Experimental data showed that the majority of Rs and Bs changes of these bulk films were due to thickness reduction during exposure to the RIE process. ? and Ms change after taking thickness reduction into account were negligible. The composition of the bulk films, which were not sensitive to surface magnetic dead layers with nano-meter scale, showed minimum change as well. It was found by TEM and EELS analysis that although both before and after RIE there were magnetic dead layers on the top surface of these materials, the thickness and element concentration of the layers were quite different. Prior to RIE, dead layer was actually native oxidation layers (about 2?nm thick), while after RIE dead layer consisted of two sub-layers that were about 6?nm thick in total. Sub-layer on the top was native oxidation layer, while the bottom layer was RIE “damaged” layer with very high fluorine concentration. Two in-situ RIE approaches were also proposed and tested to remove such damaged sub-layers.

Yang, Xiaoyu, E-mail: xiaoyu.yang@wdc.com; Chen, Lifan; Han, Hongmei; Fu, Lianfeng; Sun, Ming; Liu, Feng; Zhang, Jinqiu [Western Digital Corporation, 44100 Osgood Road, Fremont, California 94539 (United States)

2014-05-07T23:59:59.000Z

115

FUNCTIONALIZED SILICA AEROGELS: ADVANCED MATERIALS TO CAPTURE AND IMMOBILIZE RADIOACTIVE IODINE  

SciTech Connect (OSTI)

To support the future expansion of nuclear energy, an effective method is needed to capture and safely store radiological iodine-129 released during reprocessing of spent nuclear fuel. Various materials have been investigated to capture and immobilize iodine. In most cases, however, the materials that are effective for capturing iodine cannot subsequently be sintered/densified to create a stable composite that could be a viable waste form. We have developed chemically modified, highly porous, silica aerogels that show sorption capacities higher than 440 mg of I2 per gram at 150 C. An iodine uptake test in dry air containing 4.2 ppm of iodine demonstrated no breakthrough after 3.5 h and indicated a decontamination factor in excess of 310. Preliminary densification tests showed that the I2-loaded aerogels retained more than 92 wt% of I2 after thermal sintering with pressure assistance at 1200 C for 30 min. These high capture and retention efficiencies for I2 can be further improved by optimizing the functionalization process and the chemistry as well as the sintering conditions.

Matyas, Josef; Fryxell, Glen E.; Busche, Brad J.; Wallace, Krys; Fifield, Leonard S.

2011-11-16T23:59:59.000Z

116

Purex Plant gaseous iodine-129 control capability and process development requirements  

SciTech Connect (OSTI)

This report describes the ability of the Purex Plant to effectively control iodine-129 emissions. Based on historical evidence, the current Purex Plant iodine control system appears capable of meeting the goal of limiting gaseous iodine-129 emissions at the point of discharge to levels stipulated by the Department of Energy (DOE) for an uncontrolled area. Expected decontamination factors (DF`s) with the current system will average about 100 and will be above the calculated DF`s of 2.2 and 87 required to meet DOE yearly average concentration limits for controlled and uncontrolled areas respectively, but below the calculated DF of 352 required for meeting the proposed Environmental Protection Agency (EPA) mass emission limit. Chemical costs for maintaining compliance with the DOE limits will be approximately $166 per metric ton of fuel processed (based on a silver nitrate price of $12.38/oz). Costs will increase in proportion to increases in silver prices.

Evoniuk, C.J.

1981-01-01T23:59:59.000Z

117

Comparative EPMA and -XRF methods for mapping micro-scale distribution of iodine in biocarbonates of the CallovianOxfordian  

E-Print Network [OSTI]

Comparative EPMA and -XRF methods for mapping micro-scale distribution of iodine in biocarbonates spectrometry (IR), electron microprobe (EPMA), spatially resolved synchrotron-based X-ray fluorescence (-XRF recrystallized into diagenetic calcite and celestite. EPMA and -XRF data show bioaccumulation of iodine

Paris-Sud XI, Université de

118

Project EARTH-11-RR2: Co-evolution of iodine antioxidant mechanism in marine algae and Earth-surface  

E-Print Network [OSTI]

Project EARTH-11-RR2: Co-evolution of iodine antioxidant mechanism in marine algae and Earth algae (yet they are lacking in green algae) ­ but the phylogenetic distribution of iodine accumulation haloperoxidases. The first appearance and important divergence of brown algae occurred within the last 200 myr

Henderson, Gideon

119

Wafer Preparation and Iodine-Ethanol-Ethanol Passivation Procedure for Reproducible Minority-Carrier Lifetime Measurement: Preprint  

SciTech Connect (OSTI)

This paper describes reasons that lifetime measurments may be irreproducible using iodine-in-ethanol (I-E) passivation. Possible factors include the strength of the iodine in ethanol solution, wafer cleaning procedures, influence of wafer container during lifetime measurement, and stability of I-E.

Sopori, B.; Rupnowski, P.; Appel, J.; Mehta, V.; Li, C.; Johnston, S.

2008-05-01T23:59:59.000Z

120

Extraction and Quantitative Analysis of Iodine in Solid and Solution Matrixes  

SciTech Connect (OSTI)

129I is a contaminant of interest in the vadose zone and groundwater at numerous federal and privately-owned facilities. Several techniques have been utilized to extract iodine from solid matrices; however, all of them rely on two fundamental approaches: liquid extraction or chemical/heat facilitated volatilization. While these methods are typically chosen for their ease of implementation, they do not totally dissolve the solid. Because some of the iodine partitions onto the soil, extraction methods that do not result in total sample dissolution could underestimate the total iodine content of solid samples. We defined a method that produces complete solid dissolution and conducted laboratory tests to assess its efficacy to completely extract iodine from solid matrices. Testing consisted of potassium nitrate/potassium hydroxide fusion of the sample, followed by sample dissolution in a mixture of sulfuric acid and sodium bisulfite. Direct analysis of the dissolved sample was performed via inductively coupled plasma mass spectrometry (Perkin Elmer Elan DRC II) using a tertiary amine (Spectrasol CFA-C) carrier solution. The fusion extraction method resulted in complete sample dissolution of all solid matrices tested: sediment, glass samples containing low-levels of iodine, as well as tank waste material collected from the Hanford Site. Quantitative analysis of iodine (127I and 129I) showed better than ? 10% accuracy for certified reference standards, with the linear operating range extending more than three orders of magnitude (0.005 to 5 ug/L). Extraction and analysis of four replicates of standard reference material (San Joaquin Soil) from the National Institute of Standards and Technology, Gaithersburg, MD, resulted in an average recovery of 98% with a relative percent deviation of 6%. This simple and cost-effective technique can be applied to solid samples of varying matrices with little or no adaptation.

Brown, Christopher F.; Geiszler, Keith N.; Vickerman, Tanya S.

2005-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

An evaluation of radio-iodinated human serum albumin in the dog  

E-Print Network [OSTI]

iodinated (131I) human serum albumin. I. Animal studies. Circulation. 4: 552-556, 1951. 19. McFarlane, W. S. Efficient trace-labeling of proteins with iodine. Nature, 182: 53, 1958. 20. Prinzmetal, M. , E. Corday, R. J. Spritzler, and W. Flieg.... Nature. 190: 1211-1212, 1961. Seely, R. D. , W. E. Nerlich, and D. E. Gregg. A comparison of cardiac output determined by the Fick procedure and a direct method using the rotameter? Circulation. 1: 1261-1266, 1950. 25. Shipley, R. A. , R. E. Clark, D...

Hood, David Martin

1973-01-01T23:59:59.000Z

122

Technetium and Iodine Getters to Improve Cast Stone Performance  

SciTech Connect (OSTI)

To determine the effectiveness of the various getter materials prior to their solidification in Cast Stone, a series of batch sorption experiments was performed at Pacific Northwest National Laboratory. To quantify the effectiveness of the removal of Tc(VII) and I(I) from solution by getters, the distribution coefficient, Kd (mL/g), was calculated. Testing involved placing getter material in contact with spiked waste solutions at a 1:100 solid-to-solution ratio for periods up to 45 days with periodic solution sampling. One Tc getter was also tested at a 1:10 solid-to-solution ratio. Two different solution media, 18.2 M? deionized water (DI H2O) and a 7.8 M Na LAW simulant, were used in the batch sorption tests. Each test was conducted at room temperature in an anoxic chamber containing N2 with a small amount of H2 (0.7%) to maintain anoxic conditions. Each getter-solution combination was run in duplicate. Three Tc- and I-doping concentrations were used separately in aliquots of both the 18.2 M? DI H2O and a 7.8 M Na LAW waste simulant. The 1× concentration was developed based on Hanford Tank Waste Operations Simulator (HTWOS) model runs to support the River Protection Project System Plan Revision 6. The other two concentrations were 5× and 10× of the HTWOS values. The Tc and I tests were run separately (i.e., the solutions did not contain both solutes). Sampling of the solid-solution mixtures occurred nominally after 0.2, 1, 3, 6, 9, 12, 15 days and ~35 to 45 days. Seven getter materials were tested for Tc and five materials were tested for I. The seven Tc getters were blast furnace slag 1 (BFS1) (northwest source), BFS2 (southeast source), Sn(II)-treated apatite, Sn(II) chloride, nano tin phosphate, KMS (a potassium-metal-sulfide), and tin hydroxapatite. The five iodine getters were layered bismuth hydroxide (LBH), argentite mineral, synthetic argentite, silver-treated carbon, and silver-treated zeolite. The Tc Kd values measured from experiments conducted using the 7.8 M Na LAW simulant (the simulant selected to represent LAW) for the first 15 days for four Tc getters (BFS1, BFS2, Sn(II)-treated apatite, and Sn(II) chloride) show no, to a very small, capacity to remove Tc from the LAW simulant. For the Tc-getter experiments in the 7.8 M LAW simulant, the majority of the effluent samples show very small drops in Tc concentrations for the 35-day compared to the 15-day samplings. However, the Tc concentration in the simulant blanks also dropped slightly during this period, so the effect of the getter contacting LAW simulant at 35 days compared to 15 days is minimal; except that the BFS1 1:10 test shows a slow but steady decrease in Tc concentration in the LAW simulant supernatant from the beginning to the 35 day contact at which point about 20% of the original Tc has been removed from solution. Lastly, the KMS getter gives the highest Kd value for Tc at 35 days where Kd values have increased to 104 mL/g. When considering the different I getters reacting with the 7.8 M LAW simulant, two getters are much more effective than the others: Ag zeolite and Syn Arg. The other getters have calculated iodide distribution coefficients that show very limited effectiveness in the caustic conditions created by the LAW simulant. These are preliminary results that will need more detailed analyses including both pre- and post-batch sorption getter solid-phase characterization using state-of-the-art instrumentation such as synchrotron X ray absorption spectroscopy, which can delineate the oxidation state of the Tc and likely iodine species as well as some of the getters key major components, sulfur and iron in the BFS, and tin and sulfur in the tin-bearing and sulfur-bearing getters. This report also describes future experimental studies to be performed to better elucidate the mechanisms controlling the Tc and I sequestration processes in the various getters and leach tests of getter-bearing Cast Stone monoliths.

Qafoku, Nikolla; Neeway, James J.; Lawter, Amanda R.; Levitskaia, Tatiana G.; Serne, R. Jeffrey; Westsik, Joseph H.; Snyder, Michelle MV

2014-07-01T23:59:59.000Z

123

Demonstration of an iodine laser pumped by an air-helium electric discharge  

E-Print Network [OSTI]

issues with this chemical singlet oxygen generator (SOG) motivated many investigations-He-NO gas mixture. Active oxygen and nitrogen species were observed downstream of the discharge regionW in a supersonic flow cavity. Keywords: electric oxygen iodine laser, electric discharge, singlet oxygen, active

Carroll, David L.

124

Deficiencies of sodium and iodine in grazing sheep in northern China  

E-Print Network [OSTI]

Deficiencies of sodium and iodine in grazing sheep in northern China DG Masters JR Lindsay SX Yu DX of Traditional Veterinary Medicine, Chinese Academy of Agricultural Science, Xiaoxihu, Lanzhou, Gansu, China An examination of the mineral status of grazing sheep at 3 sites in northern China has provided evidence

Paris-Sud XI, Université de

125

Singlet oxygen generation using iodinated squaraine and squaraine-rotaxane dyesw  

E-Print Network [OSTI]

Singlet oxygen generation using iodinated squaraine and squaraine-rotaxane dyesw Easwaran Arunkumar-rotaxanes to generate singlet oxygen for potential application in photodynamic therapy (PDT). Specifically, we compare-to-face orientations in the solid state. Singlet oxygen generation efficiency was measured by trapping with 1

Smith, Bradley D.

126

8 March 2010 Role of dietary iodine and cruciferous vegetables in thyroid cancer  

E-Print Network [OSTI]

8 March 2010 1 Role of dietary iodine and cruciferous vegetables in thyroid cancer: A countrywide Rougier, MD4 Pascal Guénel, MD, PhD1,2 Author affiliations 1 Environmental Epidemiology of Cancer, CESP: Pascal Guénel, MD, PhD Environmental Epidemiology of Cancer UMRS 1018, Inserm CESP 16 avenue Paul

Paris-Sud XI, Université de

127

Deciphering the measured ratios of Iodine-131 to Cesium-137 at the Fukushima reactors  

E-Print Network [OSTI]

We calculate the relative abundance of the radioactive isotopes Iodine-131 and Cesium-137 produced by nuclear fission in reactors and compare it with data taken at the troubled Fukushima Dai-ichi nuclear power plant. The ratio of radioactivities of these two isotopes can be used to obtain information about when the nuclear reactions terminated.

T. Matsui

2011-12-13T23:59:59.000Z

128

Conditioning matrices from high level waste resulting from pyrochemical processing in fluorine salt  

SciTech Connect (OSTI)

Separating the actinides from the fission products through reductive extraction by aluminium in a LiF/AlF{sub 3} medium is a process investigated for pyrometallurgical reprocessing of spent fuel. The process involves separation by reductive salt-metal extraction. After dissolving the fuel or the transmutation target in a salt bath, the noble metal fission products are first extracted by contacting them with a slightly reducing metal. After extracting the metal fission products, then the actinides are selectively separated from the remaining fission products. In this hypothesis, all the unrecoverable fission products would be conditioned as fluorides. Therefore, this process will generate first a metallic waste containing the 'reducible' fission products (Pd, Mo, Ru, Rh, Tc, etc.) and a fluorine waste containing alkali-metal, alkaline-earth and rare earth fission products. Immobilization of these wastes in classical borosilicate glasses is not feasible due to the very low solubility of noble metals, and of fluoride in these hosts. Alternative candidates have therefore been developed including silicate glass/ceramic system for fluoride fission products and metallic ones for noble metal fission products. These waste-forms were evaluated for their confinement properties like homogeneity, waste loading, volatility during the elaboration process, chemical durability, etc. using appropriate techniques. (authors)

Grandjean, Agnes; Advocat, Thierry; Bousquet, Nicolas [SCDV - Service de Confinement des Dechets et Vitrification - Laboratoire d'Etudes de Base sur les Verres, CEA Valrho, Centre de Marcoule, 30207 Bagnols sur Ceze (France); Jegou, Christophe [SECM - Service d'Etude du Confinement et Materiaux - Laboratoire des Materiaux et Procedes Actifs - CEA Valrho, Centre de Marcoule, 30207 Bagnols sur Ceze (France)

2007-07-01T23:59:59.000Z

129

Study of the presence of fluorine in the recycled fractions during carbothermal treatment of EAF dust  

SciTech Connect (OSTI)

Carbothermal treatment tests of electric arc furnace dusts (EAFD) using the Waelz kiln process were carried out in pilot-scale for the production of zinc oxide. The association of halides in the EAFD, and the recycled products, such as zinc oxide fumes and high-grade iron contents fractions were examined by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM) analysis. XRD reveals the presence of chlorine and fluorine in the dusts in the form of KCl, NaCl and CaF{sub 2}. An ultra-pure fraction of zinc was obtained after the Double Leaching Waelz Oxide (DLWO) process was performed on the zinc oxide fumes. The halide contents were reduced to approximately 100 ppm Cl and 700 ppm F. The rest of these elements are in the form of CaF{sub 2}. About 65% F is volatilised as lead and zinc fluorides, 15% is expected in the magnetic fractions and 20% in non-magnetic fractions as CaF{sub 2} and MnF{sub 2}, respectively.

Menad, N.; Ayala, J.N.; Garcia-Carcedo, Fernando; Ruiz-Ayucar, E.; Hernandez, A

2003-07-01T23:59:59.000Z

130

Polymer electrolyte membranes from fluorinated polyisoprene-block-sulfonated polystyrene: Membrane structure and transport properties  

SciTech Connect (OSTI)

With a view to optimizing morphology and ultimately properties, membranes have been cast from relatively inexpensive block copolymer ionomers of fluorinated polyisoprene-block-sulfonated polystyrene (FISS) with various sulfonation levels, in both the acid form and the cesium neutralized form. The morphology of these membranes was characterized by transmission electron microscopy and ultra-small angle X-ray scattering, as well as water uptake, proton conductivity and methanol permeability within the temperature range from 20 to 60 C. Random phase separated morphologies were obtained for all samples except the cesium sample with 50 mol% sulfonation. The transport properties increased with increasing degree of sulfonation and temperature for all samples. The acid form samples absorbed more water than the cesium samples with a maximum swelling of 595% recorded at 60 C for the acid sample having 50 mol% sulfonation. Methanol permeability for the latter sample was more than an order of magnitude less than for Nafion 112 but so was the proton conductivity within the plane of the membrane at 20 C. Across the plane of the membrane this sample had half the conductivity of Nafion 112 at 60 C.

Sodeye, Akinbode [Department of Polymer Science and Engineering, University of Massachusetts; Huang, Tianzi [University of Tennessee, Knoxville (UTK); Gido, Samuel [University of Massachusetts, Amherst; Mays, Jimmy [ORNL

2011-01-01T23:59:59.000Z

131

Fluorine-Containing ABC Linear Triblock Terpolymers: Synthesis and Self-assembly in Solution  

SciTech Connect (OSTI)

In this paper a fluorine-containing monomer, 2-fluroroethyl methacrylate (2FEMA) was used to synthesize the linear triblock terpolymer poly(n-butyl methacrylate)-poly(methyl methacrylate)-poly(2-fluoroethyl methacrylate) (PnBMA-PMMA-P2FEMA). A kinetic study of the homopolymerization of 2FEMA by reversible addition-fragmentation chain transfer (RAFT) polymerization showed that it demonstrates living character and produces well defined polymers with reasonably narrow polydispersities (~1.30). Triblock terpolymers were prepared sequentially using a purified Macro-CTA at 70 oC, resulting in final terpolymers with high Dp for each block (>150) and with polydispersities between 1.6 and 2.1. The structure and molecular weights of the resultant PnBMA-PMMA-P2FEMA triblock terpolymers were characterized via 1H NMR, 19F NMR, and gel permeation chromatography (GPC). Self-assembly of these polymers was carried out in a selective solvent and the micellar aggregates (MAs) thereby formed were analyzed using scanning electron microscopy (SEM) and dynamic light scattering (DLS). It was confirmed from SEM that these copolymers could directly self-organize into large compound micelles in tetrahydrofuran/methanol with different diameters, depending on polymer composition.

He, Lihong [ORNL; Hinestrosa Salazar, Juan P [ORNL; Pickel, Joseph M [ORNL; Kilbey, II, S Michael [ORNL; Mays, Jimmy [ORNL; Zhang, Shanju [Georgia Institute of Technology; Bucknall, David G. [Georgia Institute of Technology; Hong, Kunlun [ORNL

2011-01-01T23:59:59.000Z

132

Features of adsorbed radioactive chemical elements and their isotopes distribution in iodine air filters AU-1500 at nuclear power plants  

E-Print Network [OSTI]

The main aim of research is to investigate the physical features of spatial distribution of the adsorbed radioactive chemical elements and their isotopes in the granular filtering medium in the iodine air filters of the type of AU1500 in the forced exhaust ventilation systems at the nuclear power plant. The gamma activation analysis method is applied to accurately characterize the distribution of the adsorbed radioactive chemical elements and their isotopes in the granular filtering medium in the AU1500 iodine air filter after its long term operation at the nuclear power plant. The typical spectrum of the detected chemical elements and their isotopes in the AU1500 iodine air filter, which was exposed to the bremsstrahlung gamma quantum irradiation, produced by the accelerating electrons in the tantalum target, are obtained. The spatial distributions of the detected chemical element 127I and some other chemical elements and their isotopes in the layer of absorber, which was made of the cylindrical coal granules of the type of SKT3, in the AU1500 iodine air filter are also researched. The possible influences by the standing acoustic wave of air pressure in the iodine air filter on the spatial distribution of the chemical elements and their isotopes in the iodine air filter are discussed. The comprehensive analysis of obtained research results on the distribution of the adsorbed chemical elements and their isotopes in the absorber of iodine air filter is performed.

I. M. Neklyudov; A. N. Dovbnya; N. P. Dikiy; O. P. Ledenyov; Yu. V. Lyashko

2013-06-21T23:59:59.000Z

133

Determination of iodine in organic compounds using low-temperature ammoniacal plasma of high-frequency discharge  

SciTech Connect (OSTI)

This paper presents a method for the determination of iodine in organic compounds, based on the use of a low-temperature ammonial plasma of an electrodeless high frequency discharge. The method was tested on a large number of compounds, and is distinguished by simplicity of operation, rapidity, accuracy and applicability for simultaneous determination of iodine and palladium. The results of the simultaneous determination of iodine and palladium in organic compounds are shown. The relative standard deviation does not exceed 0.011. The duration of each determination is 15-20 min.

Volodina, M.A.; Kutseva, N.K.

1986-09-01T23:59:59.000Z

134

Real-time crystallization in fluorinated parylene probed by conductivity spectra  

SciTech Connect (OSTI)

Dielectric relaxation spectroscopy experiments were performed at high temperature on fluorinated parylene films during the occurrence of the isothermal crystalline phase transition. For this polymer, since the difference between the glass transition temperature (T{sub g}) and the phase transition temperature (T{sub c}) is very strong (T{sub c}???4T{sub g}), segmental and dipolar relaxation usually used to probe the crystallization are not shown in the experiment frequency window (10{sup ?1} to 10{sup 6}?Hz) during the crystallization. The charge diffusion becomes the only electrical marker that allows probing the phase transition. During the transition phase, a continuous decrease of about two orders of magnitude is observed in the conductivity values below an offset frequency (f{sub c}) with a tendency to stabilization after 600?min. Below the offset frequency, the decrease of the normalized conductivity to the initial value as function of time is frequency independent. The same behavior is also observed for the f{sub c} values that decrease from 160?Hz to about 20?Hz. Above the offset frequency, the electronic hopping mechanism is also affected by the phase transition and the power law exponent (n) of the AC conductivity shows a variation from 0.7 to 0.95 during the first 600?min that tend to stabilize thereafter. Accordingly, three parameters (n, f{sub c}, and AC conductivity values for frequencies below f{sub c}) extracted from the AC conductivity spectra in different frequency windows seem suitable to probe the crystalline phase transition.

Khazaka, R., E-mail: rabih.khazaka@laplace.univ-tlse.fr; Diaham, S. [Université de Toulouse, UPS, INPT, Laboratoire LAPLACE, 118 route de Narbonne, F-31062 Toulouse (France); Locatelli, M. L. [Université de Toulouse, UPS, INPT, Laboratoire LAPLACE, 118 route de Narbonne, F-31062 Toulouse (France); CNRS, LAPLACE, F-31062 Toulouse (France); Tenailleau, C. [Université de Toulouse, UPS, Laboratoire CIRIMAT/LCMIE, 118 route de Narbonne - Bât. 2R1, F-31062 Toulouse cedex 9 (France); Kumar, R. [Speciality Coating Systems, Inc. (SCS), Cookson Electronics, 7645 Woodland Drive, Indianapolis, Indiana 46278 (United States)

2014-03-17T23:59:59.000Z

135

The development of autocatalytic structural materials for use in the sulfur-iodine process for the production of hydrogen  

E-Print Network [OSTI]

The Sulfur-Iodine Cycle for the thermochemical production of hydrogen offers many benefits to traditional methods of hydrogen production. As opposed to steam methane reforming - the most prevalent method of hydrogen ...

Miu, Kevin (Kevin K.)

2006-01-01T23:59:59.000Z

136

Effect of fluorine, nitrogen, and carbon impurities on the electronic and magnetic properties of WO{sub 3}  

SciTech Connect (OSTI)

Within electron density functional theory with the use of the Vienna ab-initio simulation package (VASP), the effect of the sp substitutional impurities of fluorine (n-type dopant), nitrogen, and carbon (p-type dopants) on the electronic and magnetic properties of tungsten trioxide WO{sub 3} is studied. It is established that these impurities induce the transformation of tungsten trioxide (nonmagnetic semiconductor) into nonmagnetic metal (WO{sub 3}:F), magnetic semimetal (WO{sub 3}:N), or magnetic metal (WO{sub 3}:C) states.

Shein, I. R.; Ivanovskii, A. L. [Russian Academy of Sciences, Institute of Solid State Chemistry (Russian Federation)

2013-06-15T23:59:59.000Z

137

Expanded Analysis of Hot Isostatic Pressed Iodine-Loaded Silver-Exchanged Mordenite  

SciTech Connect (OSTI)

Reduced silver-exchanged mordenite (Ag0Z) is being evaluated as a potential material to control the release of radioactive iodine that is released during the reprocessing of used nuclear fuel into the plant off-gas streams. The purpose of this study was to determine if hot pressing could directly convert this iodine loaded sorbent into a waste form suitable for long-term disposition. The minimal pretreatment required for production of pressed pellets makes hot pressing a technically and economically desirable process. Initial scoping studies utilized hot uniaxial pressing (HUPing) to prepare samples of non-iodine-loaded reduced silver exchanged mordenite (Ag0Z). The resulting samples were very fragile due to the low pressure (~ 28 MPa) used. It was recommended that hot isostatic pressing (HIPing), performed at higher temperatures and pressures, be investigated. HIPing was carried out in two phases, with a third and final phase currently underway. Phase I evaluated the effects of pressure and temperature conditions on the manufacture of a pressed sample. The base material was an engineered form of silver zeolite. Six samples of Ag0Z and two samples of I-Ag0Z were pressed. It was found that HIPing produced a pressed pellet of high density. Analysis of each pressed pellet by scanning electron microscopy-energy dispersive spectrophotometry (SEM-EDS) and X-ray diffraction (XRD) demonstrated that under the conditions used for pressing, the majority of the material transforms into an amorphous structure. The only crystalline phase observed in the pressed Ag0Z material was SiO2. For the samples loaded with iodine (I-Ag0Z) iodine was present as AgI clusters at low temperatures, and transformed into AgIO4 at high temperatures. Surface mapping and EDS demonstrate segregation between silver iodide phases and silicon dioxide phases. Based on the results of the Phase I study, an expanded test matrix was developed to examine the effects of multiple source materials, compositional variations, and an expanded temperature range. Each sample was analyzed with the approach used in Phase I. In all cases, there is nothing in the SEM or XRD analyses that indicates creation of any AgI-containing silicon phase, with the samples being found to be largely amorphous. Phase III of this study has been initiated and is the final phase of scoping tests. It will expand upon the test matrix completed in Phase II and will examine the durability of the pressed pellets through product consistency testing (PCT) studies. Transformation of the component material into a well-characterized iodine-containing mineral phase would be desirable. This would limit the additional experimental testing and modeling required to determine the long-term stability of the pressed pellet, as much of that information has already been learned for several common iodine-containing minerals. However, this is not an absolute requirement, especially if pellets produced by hot isostatic pressing can be demonstrated through initial PCT studies to retain iodine well despite their amorphous composition.

Jubin, R. T. [ORNL; Bruffey, S. H. [ORNL; Patton, K. K. [ORNL

2014-09-30T23:59:59.000Z

138

Laboratory studies on the evolution of iodine-129 during Purex-uranium metal dissolution  

SciTech Connect (OSTI)

The path of iodine from the Purex dissolver was determined during fuel dissolution using /sup 125/I tracer. Laboratory-scale equipment qualification studies were completed using sections of nonirradiated uranium N-reactor fuel elements. A proof-of-principle dissolution study was completed at the end of FY 1979 in the PNL hot cells using wafers of irradiated N-reactor fuel. The findings include the following: the laboratory-scale dissolver/downdraft condenser was designed at a factor of 5 x 10/sup -5/ of the Purex flowsheet; with no refluxing, 5.6 moles of HNO/sub 3/ were required per mole of dissolved uranium. With NO/sub x/ recovery in the reflux stream, an average of 3.6 moles of HNO/sub 3/ was required. These results formed the basis for adequate modeling of the laboratory Purex downdraft dissolver; approximately 8% of the iodine was found in the final dissolver solution when the /sup 125/I tracer was added to the initial dissolver solution prior to the first cut, 6-h dissolution; when the /sup 125/I was added continuously during the 6-h dissolution without any refluxing of the condenser acid back to the dissolver, approximately 16% of the iodine was found in the dissolver solution; when irradiated N-reactor fuel was dissolved while /sup 125/I tracer was continuously added to the dissolver during the 6-h test, 11% of the /sup 125/I tracer was found in the dissolver solution. After 2 h of refluxing with air sparging, 6% of the /sup 125/I tracer was found in the dissolver solution; and analysis of the fission product /sup 129/I in the fuel duplicated the tracer study results with 8% and 7% of the iodine remaining in the dissolver solution after 6 and 8 h, respectively.

Bray, L.A.

1980-03-01T23:59:59.000Z

139

Sulfur Iodine Process Summary for the Hydrogen Technology Down-Selection  

SciTech Connect (OSTI)

This report summarizes the sulfur-iodine (SI) thermochemical water splitting process for the purpose of supporting the process for evaluating and recommending a hydrogen production technology to deploy with the Next Generation Nuclear Plant (NGNP). This package provides the baseline process description as well as a comparison with the process as it was implemented in the Integrated Lab Scale (ILS) experiment conducted at General Atomics from 2006-2009.

Benjamin Russ

2009-05-01T23:59:59.000Z

140

Atmospheric dispersion and deposition of iodine-131 released from the Hanford Site  

SciTech Connect (OSTI)

Approximately 2.6x10{sup 4} TBq (700,000 curies) of iodine-131 were released to the air from reactor fuel processing plants on the Hanford Site in southcentral Washington State from December 1944 through December 1949. The Hanford Environmental Dose Reconstruction (HEDR) Project developed a suite of codes to estimate the doses that might have resulted from these releases. The Regional Atmospheric Transport Code for Hanford Emission Tracking (RATCHET) computer code is part of this suite. The RATCHET code implements a Lagrangian-trajectory, Gaussian-puff dispersion model that uses hourly meteorological and release rate data to estimate daily time-integrated air concentrations and surface contamination for use in dose estimates. In this model, iodine is treated as a mixture of three species (nominally, inorganic gases, organic gases, and particles). Model deposition parameters are functions of the mixture and meteorological conditions. A resistance model is used to calculate dry deposition velocities. Equilibrium between concentrations in the precipitation and the air near the ground is assumed in calculating wet deposition of gases, and irreversible washout of the particles is assumed. RATCHET explicitly treats the uncertainties in model parameters and meteorological conditions. Uncertainties in iodine-131 release rates and partitioning among the nominal species are treated by varying model input. The results of 100 model runs for December 1944 through December 1949 indicate that monthly average air concentrations and deposition have uncertainties ranging from a factor of two near the center of the time-integrated plume to more than an order of magnitude near the edge. These results indicate that -10% of the iodine-131 released to the atmosphere decayed during transit in the study area, -56% was deposited within the study area, and the remaining 34% was transported out of the study area while still in the air.

Ramsdell, J.V.; Simonen, C.A.; Burk, K.W.; Stage, S.A.

1994-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Physical features of accumulation and distribution processes of small disperse coal dust precipitations and absorbed radioactive chemical elements in iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The physical features of absorption process of radioactive chemical elements and their isotopes in the iodine air filters of the type of AU-1500 at the nuclear power plants are researched. It is shown that the non-homogenous spatial distribution of absorbed radioactive chemical elements and their isotopes in the iodine air filter, probed by the gamma-activation analysis method, is well correlated with the spatial distribution of small disperse coal dust precipitations in the iodine air filter. This circumstance points out to an important role by the small disperse coal dust fractions of absorber in the absorption process of radioactive chemical elements and their isotopes in the iodine air filter. The physical origins of characteristic interaction between the radioactive chemical elements and the accumulated small disperse coal dust precipitations in an iodine air filter are considered. The analysis of influence by the researched physical processes on the technical characteristics and functionality of iodine ...

Ledenyov, Oleg P; Poltinin, P Ya; Fedorova, L I

2012-01-01T23:59:59.000Z

142

Determine Minimum Silver Flake Addition to GCM for Iodine Loaded AgZ  

SciTech Connect (OSTI)

The minimum amount of silver flake required to prevent loss of I{sub 2} during sintering in air for a SNL Glass Composite Material (GCM) Waste Form containing AgI-MOR (ORNL, 8.7 wt%) was determined to be 1.1 wt% Ag. The final GCM composition prior to sintering was 20 wt% AgI-MOR, 1.1 wt% Ag, and 80 wt% Bi-Si oxide glass. The amount of silver flake needed to suppress iodine loss was determined using thermo gravimetric analysis with mass spectroscopic off-gas analysis. These studies found that the ratio of silver to AgI-MOR required is lower in the presence of the glass than without it. Therefore an additional benefit of the GCM is that it serves to inhibit some iodine loss during processing. Alternatively, heating the AgI-MOR in inert atmosphere instead of air allowed for densified GCM formation without I{sub 2} loss, and no necessity for the addition of Ag. The cause of this behavior is found to be related to the oxidation of the metallic Ag to Ag{sup +} when heated to above ~300{degrees}C in air. Heating rate, iodine loading levels and atmosphere are the important variables that determine AgI migration and results suggest that AgI may be completely incorporated into the mordenite structure by the 550{degrees}C sintering temperature.

Terry J. Garino; Tina M. Nenoff; Mark A. Rodriguez

2014-04-01T23:59:59.000Z

143

Fluorinated Phosphazene Co-solvents for Improved Thermal and Safety Performance in Lithium-Ion Battery Electrolytes  

SciTech Connect (OSTI)

The safety of lithium-ion batteries is coming under increased scrutiny as they are being adopted for large format applications especially in the vehicle transportation industry and for grid-scale energy storage. The primary short-comings of lithium-ion batteries are the flammability of the liquid electrolyte and sensitivity to high voltage and elevated temperatures. We have synthesized a series of non-flammable fluorinated phosphazene liquids and blended them with conventional carbonate solvents. While the use of these phosphazenes as standalone electrolytes is highly desirable, they simply do not satisfy all of the many requirements that must be met such as high LiPF6 solubility and low viscosity, thus we have used them as additives and co-solvents in blends with typical carbonates. The physical and electrochemical properties of the electrolyte blends were characterized, and then the blends were used to build 2032-type coin cells which were evaluated at constant current cycling rates from C/10 to C/1. We have evaluated the performance of the electrolytes by determining the conductivity, viscosity, flash point, vapor pressure, thermal stability, electrochemical window, cell cycling data, and the ability to form solid electrolyte interphase (SEI) films. This paper presents our results on a series of chemically similar fluorinated cyclic phosphazene trimers, the FM series, which has exhibited numerous beneficial effects on battery performance, lifetimes, and safety aspects.

Harry W. Rollins; Mason K. Harrup; Eric J. Dufek; David K. Jamison; Sergiy V. Sazhin; Kevin L. Gering; Dayna L. Daubaras

2014-10-01T23:59:59.000Z

144

Dissolved iodine in rainfall,cloud,stream and groundwater in the Plynlimon area of mid-Wales Hydrol. Earth Syst. Sci., 11(1), 283293, 2007  

E-Print Network [OSTI]

). Further, there are issues of radioactive iodine contamination from nuclear weapon testing, nuclear, much higher concentrations can occur in brines associated with oil fields where concentrations can

Paris-Sud XI, Université de

145

Effect of iodination on human growth hormone and prolactin: characterized by bioassay, radioimmunoassay, radioreceptor assay, and electrophoresis  

SciTech Connect (OSTI)

Human GH (hGH) and PRL (hPRL) were iodinated using lactoperoxidase. The iodinated hormones were characterized by RIA, radioreceptor assay (RRA), and bioassay (BA) using the Nb2 Node lymphoma cell line. The proportion of tracer that could bind to rat liver membranes or rabbit antibodies was determined, and the distribution of iodinated hormones was examined using polyacrylamide gel electrophoresis. Excess antibody was capable of precipitating 87.9% of the radioactivity associated with the hGH tracer and 86.0% of the hPRL tracer. The maximal specific binding to a liver membrane preparation averaged 67.3% of the (/sup 125/I)iodo-hGH radioactivity and 48.8% of the (/sup 125/I)iodo-hPRL radioactivity. The respective BA and RRA activity estimates for (/sup 125/I)iodo-hGH averaged 90% and 114% of the activity measured by the RIA. For (/sup 125/I)iodo-hPRL, the values were 75% by BA and 68% by RRA. The bioactivity profiles of iodinated hGH and hPRL shifted anodally on polyacrylamide gel electrophoresis in comparison to the bioactivity distribution of the respective uniodinated hormones. Iodine incorporation rather than oxidation appeared to be responsible for the shift. After electrophoresis, all eluates which contained significant radioactivity were active in the BA and RIA. Furthermore, specific activities calculated from the bioactive hormone and radioactivity in each electrophoretic segment agreed well with the average specific activity estimated from the amount of iodine incorporated into the protein peak upon gel filtration. These data suggest that hGH and hPRL to a major degree retain biological integrity after iodination.

Hughes, J.P.; Tanaka, T.; Gout, P.W.; Beer, C.T.; Noble, R.L.; Friesen, H.G.

1982-09-01T23:59:59.000Z

146

Effect of iodination on human growth hormone and prolactin: characterized by bioassay, radioimmunoassay, radioreceptor assay, and electrophoresis  

SciTech Connect (OSTI)

Human GH (hGH) and PRL (hPRL) were iodinated using lactoperoxidase. The iodinated hormones were characterized by RIA, radioreceptor assay (RRA), and bioassay (BA) using the Nb2 Node lymphoma cell line. The proportion of tracer that could bind to rat liver membranes or rabbit antibodies was determined, and the distribution of iodinated hormones was examined using polyacrylamide gel electrophoresis. Excess antibody was capable of precipitating 87.9% of the radioactivity associated with the hGH tracer and 86.0% of the hPRL tracer. The maximal specific binding to a liver membrane preparation averaged 67.3% of the (/sup 125/I)iodo-hGH radioactivity and 48.8% of the (/sup 125/I)iodo-hPRL radioactivity. The respective BA and RRA activity estimates for (/sup 125/)iodo-hGH averaged 90% and 114% of the activity measured by the RIA. For (/sup 125/I)iodo-hPRL, the values were 75% by BA and 68% by RRA. The bioactivity profiles of iodinated hGH and hPRL shifted anodally on polyacrylamide gel electrophoresis in comparison to the bioactivity distribution of the respective uniodinated hormones. Iodine incorporation rather than oxidation appeared to be responsible for the shift. After electrophoresis, all eluates which contained significant radioactivity were active in the BA and RIA. Furthermore, specific activities calculated from the bioactive hormone and radioactivity in each electrophoretic segment agreed well with the average specific activity estimated from the amount of iodine incorporated into the protein peak upon gel filtration. These data suggest that hGH and hPRL to a major degree retain biological integrity after iodination.

Hughes, J.P. (Univ. of Manitoba, Winnipeg, Canada); Tanaka, T.; Gout, P.W.; Beer, C.T.; Noble, R.L.; Friesen, H.G.

1982-09-01T23:59:59.000Z

147

Synthesis, structural and magnetic characterisation of the fluorinated compound 15R-BaFeO{sub 2}F  

SciTech Connect (OSTI)

The compounds 15R-BaFeO{sub 2}F and 15R-BaFeO{sub 2.27}F{sub 0.5} have been synthesised by the low temperature fluorination of 15R-BaFeO{sub 3?d}F{sub 0.2} using polyvinylidenedifluoride (PVDF) as a fluorination agent. The materials have been structurally characterised by Rietveld analysis of the X-ray- and HRPD-powder neutron diffraction data. A detailed analysis of bond valence sums suggests that the oxide and fluoride ions order on the different anion sites. A reinvestigation of our recently published structure (Clemens et al., 2013) [34] of 6H-BaFeO{sub 2}F is also reported and incorporation of fluoride in h-type layers is also confirmed in this compound. The magnetic moments for 15R-BaFeO{sub 2}F and 15R-BaFeO{sub 2.25}F{sub 0.5} align in the a/b-plane with antiferromagnetic alignment of the moments between adjacent layers, and are flipped by 90° as compared to the precursor compound. 15R-BaFeO{sub 2}F exhibits very robust antiferromagnetism with a Néel temperature between 300 and 400 °C. - Graphical abstract: The crystal and magnetic structure of the perovskite phase 15R-BaFeO{sub 2}F. - Highlights: • 15R-BaFeO{sub 2}F and 15R-BaFeO{sub 2.27}F{sub 0.5}were prepared via low temperature fluorination using PVDF. • A structural investigation of the compounds BaFeO{sub 2}F is presented in detail. • This analysis suggests ordering of O{sup 2?} and F{sup ?} anions between different layers. • 15R-BaFeO{sub 2}F shows antiferromagnetic ordering at 300 K with T{sub N} ?300–400 °C. • The magnetic moments align in the a/b-plane.

Clemens, Oliver, E-mail: oliverclemens@online.de [School of Chemistry, The University of Birmingham, Birmingham B15 2TT (United Kingdom); Berry, Frank J. [School of Chemistry, The University of Birmingham, Birmingham B15 2TT (United Kingdom); Bauer, Jessica [Anorganische Festkörperchemie, Universität des Saarlandes, Am Markt, Zeile 3, 66125 Saarbrücken (Germany); Wright, Adrian J. [School of Chemistry, The University of Birmingham, Birmingham B15 2TT (United Kingdom); Knight, Kevin S. [ISIS Facility, Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX (United Kingdom); Slater, Peter R. [School of Chemistry, The University of Birmingham, Birmingham B15 2TT (United Kingdom)

2013-07-15T23:59:59.000Z

148

Characteristics of ultra low-k nanoporous and fluorinated silica based films prepared by plasma enhanced chemical vapor deposition  

SciTech Connect (OSTI)

Low dielectric constant (low-k) silica based films were deposited on p-type silicon and polycarbonate substrates by radio frequency (RF) plasma enhanced chemical vapor deposition method at low temperature. A mixture of tetraethoxysilane vapor, oxygen, and tetrafluoromethane (CF{sub 4}) was used for the deposition of the films in forms of two structures called as SiO{sub x}C{sub y} and SiO{sub x}C{sub y}F{sub z}. Properties of the films were controlled by amount of porosity and fluorine content in the film matrix. The influence of RF power and CF{sub 4} flow on the elemental composition, deposition rate, surface roughness, leakage current, refractive index, and dielectric constant of the films were characterized. Moreover, optical emission spectroscopy was applied to monitor the plasma process at the different parameters. Electrical characteristics of SiO{sub x}C{sub y} and SiO{sub x}C{sub y}F{sub z} films with metal-oxide-semiconductor structure were investigated using current-voltage analysis to measure the leakage current and breakdown field, as well as capacitance-voltage analysis to obtain the film's dielectric constant. The results revealed that SiO{sub x}C{sub y} films, which are deposited at lower RF power produce more leakage current, meanwhile the dielectric constant and refractive index of these films decreased mainly due to the more porosity in the film structure. By adding CF{sub 4} in the deposition process, fluorine, the most electronegative and the least polarized atom, doped into the silica film and led to decrease in the refractive index and the dielectric constant. In addition, no breakdown field was observed in the electrical characteristics of SiO{sub x}C{sub y}F{sub z} films and the leakage current of these films reduced by increment of the CF{sub 4} flow.

Abbasi-Firouzjah, M. [Laser and Plasma Research Institute, Shahid Beheshti University G.C., Evin, Tehran 1983963113 (Iran, Islamic Republic of)] [Laser and Plasma Research Institute, Shahid Beheshti University G.C., Evin, Tehran 1983963113 (Iran, Islamic Republic of); Shokri, B. [Laser and Plasma Research Institute, Shahid Beheshti University G.C., Evin, Tehran 1983963113 (Iran, Islamic Republic of) [Laser and Plasma Research Institute, Shahid Beheshti University G.C., Evin, Tehran 1983963113 (Iran, Islamic Republic of); Physics Department, Shahid Beheshti University G.C., Evin, Tehran (Iran, Islamic Republic of)

2013-12-07T23:59:59.000Z

149

Dynamics of production of iodine atoms by dissociation of iodides in a pulsed self-sustained discharge  

SciTech Connect (OSTI)

Absorption at the laser transition has been used for the first time to assess the evolution of concentration of iodine atoms in a pulsed self-sustained discharge in mixtures of iodides with a buffer gas such as molecular nitrogen and helium. Dynamics of the iodine atom production is studied by the method of absorption spectroscopy. The dissociation of C{sub n}F{sub 2n+1}I and CnH{sub 2n+1}I (n = 1, 2) iodides is investigated. The energy required to produce atomic iodine is evaluated. The experimental data obtained for CF{sub 3}I are compared with the results of numerical simulations, their reasonable agreement being demonstrated. (active media)

Vagin, Nikolai P; Kochetov, Igor' V; Napartovich, A P; Yuryshev, Nikolai N

2013-07-31T23:59:59.000Z

150

Features of adsorbed radioactive chemical elements and their isotopes distribution in iodine air filters AU-1500 at nuclear power plants  

E-Print Network [OSTI]

The main aim of research is to investigate the physical features of spatial distribution of the adsorbed radioactive chemical elements and their isotopes in the granular filtering medium in the iodine air filters of the type of AU1500 in the forced exhaust ventilation systems at the nuclear power plant. The gamma activation analysis method is applied to accurately characterize the distribution of the adsorbed radioactive chemical elements and their isotopes in the granular filtering medium in the AU1500 iodine air filter after its long term operation at the nuclear power plant. The typical spectrum of the detected chemical elements and their isotopes in the AU1500 iodine air filter, which was exposed to the bremsstrahlung gamma quantum irradiation, produced by the accelerating electrons in the tantalum target, are obtained. The spatial distributions of the detected chemical element 127I and some other chemical elements and their isotopes in the layer of absorber, which was made of the cylindrical coal granule...

Neklyudov, I M; Dikiy, N P; Ledenyov, O P; Lyashko, Yu V

2013-01-01T23:59:59.000Z

151

LITERATURE SURVEY FOR GROUNDWATER TREATMENT OPTIONS FOR NITRATE IODINE-129 AND URANIUM 200-ZP-1 OPERABLE UNIT HANFORD SITE  

SciTech Connect (OSTI)

This literature review presents treatment options for nitrate, iodine-129, and uranium, which are present in groundwater at the 200-ZP-I Groundwater Operable Unit (OU) within the 200 West Area of the Hanford Site. The objective of this review is to determine available methods to treat or sequester these contaminants in place (i.e., in situ) or to pump-and-treat the groundwater aboveground (i.e., ex situ). This review has been conducted with emphasis on commercially available or field-tested technologies, but theoretical studies have, in some cases, been considered when no published field data exist. The initial scope of this literature review included only nitrate and iodine-I 29, but it was later expanded to include uranium. The focus of the literature review was weighted toward researching methods for treatment of nitrate and iodine-129 over uranium because of the relatively greater impact of those compounds identified at the 200-ZP-I OU.

BYRNES ME

2008-06-05T23:59:59.000Z

152

Methods of Gas Phase Capture of Iodine from Fuel Reprocessing Off-Gas: A Literature Survey  

SciTech Connect (OSTI)

A literature survey was conducted to collect information and summarize the methods available to capture iodine from fuel reprocessing off-gases. Techniques were categorized as either wet scrubbing or solid adsorbent methods, and each method was generally described as it might be used under reprocessing conditions. Decontamination factors are quoted only to give a rough indication of the effectiveness of the method. No attempt is made to identify a preferred capture method at this time, although activities are proposed that would provide a consistent baseline that would aid in evaluating technologies.

Daryl Haefner

2007-02-01T23:59:59.000Z

153

Sulfur Iodine Process Summary for the Hydrogen Technology Down-Selection: Process Performance Package  

SciTech Connect (OSTI)

This document describes the details of implementing a Sulfur-Iodine (S-I) hydrogen production plant to deploy with the Next General Nuclear Power Plant (NGNP). Technical requirements and specifications are included, and a conceptual plant design is presented. The following areas of interest are outlined in particular as a baseline for the various technology comparisons: (1) Performance Criteria - (a) Quantity of hydrogen produced, (b) Purity of hydrogen produced, (c) Flexibility to serve various applications, (d) Waste management; (2) Economic Considerations - (a) Cost of hydrogen, (b) Development costs; and (3) Risk - (a) Technical maturity of the S-I process, (b) Development risk, (c) Scale up options.

Benjamin Russ

2009-06-01T23:59:59.000Z

154

Use of iodine surface geochemical surveys in the Lodgepole and Minnelusa plays, U.S. northern Rockies  

SciTech Connect (OSTI)

The use of surface geochemistry is becoming more prevalent in oil exploration, especially for focusing specific target areas for 2D and 3D seismic surveys. Presented here are two surface geochemical surveys utilizing the iodine method in delineating Upper Minnelusa sands of Permian age in the Powder River basin and Lodgepole Waulsortian-like mounds of Mississippian age in the Williston basin. Iodine is an indirect indicator of a petroleum accumulation at depth. Increases in iodine anomalies are caused by the presence of petroleum seepage in the upper part of the soil section. In the very shallow surface, less than 10 ft, a reaction occurs between hydrocarbons and iodine under sunlight forming inorganic compounds. The source of the iodine is either from minerals in the soil and/or from the atmosphere with ultraviolet light as the initiator of the reaction. Any iodine in the subsurface could not migrate far in the presence of hydrocarbons and due to its large molecular size. The compounds that form in the soil remain solid and are relatively difficult to remove. Any surface geochemical anomaly needs to be followed by seismic in order to provide a specific drilling target. If a surface geochemical survey is properly designed and implemented, when no anomaly is present, then to date regardless of the type of method used the results have been dry holes. If a surface geochemical anomaly is present, the intensity, areal extent, and quality of the anomaly cannot determine the economic viability of the accumulation of depth, but there is a significant increase in the success rate. The best utilization of these methods is to determine areas where there is no possibility of finding petroleum and focusing on areas that do. In the case of the Lodgepole and Minnelusa plays, surface geochemistry allows a low cost approach and helps focus and minimize 2D and 3D survey costs.

Tedesco, S.A.; Bretz, S. [Atoka Geochemical Services Corp., Englewood, CO (United States)

1995-06-05T23:59:59.000Z

155

A study of the reactions related to the catalytic decomposition of hydrogen peroxide by the iodate-iodine couple  

E-Print Network [OSTI]

of the requirement f' or the degree of' I'lASTER OF SCIENCE December 1970 Najor Subject: Chemistry 7 Fl 0 0 III A STUDY OF THE REACTIDNS RELATED TO 'THE CATALYTIC DECONPOSITION GF HYDROGEN PEROXIDE BY THE IODATE-IODINE COUPLE A Thesis by RADNILO S Ii...'ii C Approved as to style and content by: ~Chairz~n f Committee~ / [H d Oep tr ~t A1ember December 1970 ABSTRACT A Study of he Reactions Related to the Catalytic Deconposition of Hydrogen Peroxide by the Iodate-Iodine Couple. (December 1970...

Simic, Radmilo

1970-01-01T23:59:59.000Z

156

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network [OSTI]

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the direction of the gravitation force in the horizontal iodine air filter are orthogonal, hence the effective accumulation of the small dispersive coal dust particles takes place at the bottom of absorber in the horizontal iodine air filter. It is found that the air dust aerosol stream flow in the horizontal iodine air filter is not limited by the appearing structures, made of the precipitated small dispersive coal dust particles, in distinction from the vertical iodine air filter, in the process of long term operation of the iodine air filters at the nuclear power plant.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-06-11T23:59:59.000Z

157

Measurement of positive gain on the 1315 nm transition of atomic iodine pumped by O2,,a1  

E-Print Network [OSTI]

state I 2 P3/2 . Conventionally, the O2 1 is produced by a liquid chemistry singlet oxygen generator of gain. © 2004 American Institute of Physics. [DOI: 10.1063/1.1784519] The classic chemical oxygen the metastable excited singlet oxygen molecule, O2 a1 [de- noted O2 1 hereafter], and the iodine atom ground

Carroll, David L.

158

Oxygen Discharge and Post-Discharge Kinetics Experiments and Modeling for the Electric Oxygen-Iodine Laser System  

E-Print Network [OSTI]

Oxygen Discharge and Post-Discharge Kinetics Experiments and Modeling for the Electric Oxygen a low-pressure oxygen/helium/nitric oxide discharge. In the electric discharge oxygen-iodine laser (ElectricOIL) the discharge production of atomic oxygen, ozone, and other excited species adds levels

Carroll, David L.

159

Diffusion of Iodine and Rhenium in Category 3 Waste Encasement Concrete and Soil Fill Material  

SciTech Connect (OSTI)

Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e. sorption or precipitation). This understanding will enable accurate prediction of radionuclide fate when the waste forms come in contact with groundwater. A set of diffusion experiments using carbonated and non-carbonated concrete-soil half cells was conducted under unsaturated conditions (4% and 7% by wt moisture content). Spiked concrete half-cell specimens were prepared with and without colloidal metallic iron addition and were carbonated using supercritical carbon dioxide. Spikes of I and Re were added to achieve measurable diffusion profile in the soil part of the half-cell. In addition, properties of concrete materials likely to influence radionuclide migration such as carbonation were evaluated in an effort to correlate these properties with the release of iodine and rhenium.

Wellman, Dawn M.; Mattigod, Shas V.; Whyatt, Greg A.; Powers, Laura; Parker, Kent E.; Wood, Marcus I.

2006-12-15T23:59:59.000Z

160

Stable N-CuInSe.sub.2 /iodide-iodine photoelectrochemical cell  

DOE Patents [OSTI]

In a photoelectrochemical solar cell, stable output and solar efficiency in excess of 10% are achieved with a photoanode of n-CuInSe.sub.2 electrode material and an iodine/iodide redox couple used in a liquid electrolyte. The photoanode is prepared by treating the electrode material by chemical etching, for example in Br.sub.2 /MeOH; heating the etched electrode material in air or oxygen; depositing a surface film coating of indium on the electrode material after the initial heating; and thereafter again heating the electrode material in air or oxygen to oxidize the indium. The electrolyte is treated by the addition of Cu.sup.+ or Cu.sup.2+ salts and In.sup.3+ salts.

Cahen, David (Rehovot, IL); Chen, Yih W. (Lakewood, CO)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

The Sulfur-Iodine Cycle: Process Analysis and Design Using Comprehensive Phase Equilibrium Measurements and Modeling  

SciTech Connect (OSTI)

Of the 100+ thermochemical hydrogen cycles that have been proposed, the Sulfur-Iodine (S-I) Cycle is a primary target of international interest for the centralized production of hydrogen from nuclear power. However, the cycle involves complex and highly nonideal phase behavior at extreme conditions that is only beginning to be understood and modeled for process simulation. The consequence is that current designs and efficiency projections have large uncertainties, as they are based on incomplete data that must be extrapolated from property models. This situation prevents reliable assessment of the potential viability of the system and, even more, a basis for efficient process design. The goal of this NERI award (05-006) was to generate phase-equilibrium data, property models, and comprehensive process simulations so that an accurate evaluation of the S-I Cycle could be made. Our focus was on Section III of the Cycle, where the hydrogen is produced by decomposition of hydroiodic acid (HI) in the presence of water and iodine (I2) in a reactive distillation (RD) column. The results of this project were to be transferred to the nuclear hydrogen community in the form of reliable flowsheet models for the S-I process. Many of the project objectives were achieved. At Clemson University, a unique, tantalum-based, phase-equilibrium apparatus incorporating a view cell was designed and constructed for measuring fluid-phase equilibria for mixtures of iodine, HI, and water (known as HIx) at temperatures to 350 °C and pressures to 100 bar. Such measurements were of particular interest for developing a working understanding of the expected operation of the RD column in Section III. The view cell allowed for the IR observation and discernment of vapor-liquid (VL), liquid-liquid, and liquid-liquid-vapor (LLVE) equilibria for HIx systems. For the I2-H2O system, liquid-liquid equilibrium (LLE) was discovered to exist at temperatures up to 310-315 °C, in contrast to the models and predictions of earlier workers. For the I2-HI-H2O ternary, LLE and LLVE were all observed for the first time at temperatures of 160 and 200 °C. Three LLE tie-lines were measured at 160 °C, and preliminary indications are that the underlying phase behavior could result in further improvements in the performance of the S-I Cycle. Unfortunately, these new results were obtained too late in the project to be incorporated into the modeling and simulation work described below. At the University of Virginia, a uniquely complete and reliable model was developed for the thermodynamic properties of HIx, covering the range of conditions expected for the separation of product hydrogen and recycled iodine in the RD column located in Section III. The model was validated with all available property spectroscopy data. The results provide major advances over prior understanding of the chemical speciation involved. The model was implemented in process simulation studies of the S-I Cycle, which showed improvement in energy efficiency to 42%, as well as significantly smaller capital requirements due to lower pressure operation and much smaller equipment sizes. The result is that the S-I Cycle may be much more economically feasible than was previously thought. If both the experimental and modeling work described above were to be continued to ultimate process optimization, both the American public and the global community would benefit from this alternative energy source that does not produce carbon emissions.

Thies, Mark C.; O'Connell, J. P.; Gorensek, Maximilian B.

2010-01-10T23:59:59.000Z

162

Ab initio studies of ultrafast x-ray scattering of the photodissociation of iodine  

SciTech Connect (OSTI)

We computationally examine various aspects of the reaction dynamics of the photodissociation and recombination of molecular iodine. We use our recently proposed formalism to calculate time-dependent x-ray scattering signal changes from first principles. Different aspects of the dynamics of this prototypical reaction are studied, such as coherent and noncoherent processes, features of structural relaxation that are periodic in time versus nonperiodic dissociative processes, as well as small electron density changes caused by electronic excitation, all with respect to x-ray scattering. We can demonstrate that wide-angle x-ray scattering offers a possibility to study the changes in electron densities in nonperiodic systems, which render it a suitable technique for the investigation of chemical reactions from a structural dynamics point of view.

Debnarova, Andrea; Techert, Simone [Max Planck Institute for Biophysical Chemistry, 37077 Goettingen, Am Fassberg 11 (Germany); Schmatz, Stefan [Institut fuer Physikalische Chemie, Universitaet Goettingen, 37077 Goettingen, Tammannstr. 6 (Germany)

2010-09-28T23:59:59.000Z

163

A Sensitive Determination of Iodine Species, Including Organoiodine, for Freshwater and Seawater Samples Using High Performance Liquid Chromatography and Spectrophotometric Detection  

E-Print Network [OSTI]

, with minimal sample preparation, compared to existing methods. The method has been successfully applied to determine iodide, iodate as the difference of total inorganic iodide and iodide after reduction of the sample, and organic iodine as the difference...

Schwehr, K. A.; Santschi, P. H.

164

Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

165

Influence by small dispersive coal dust particles of different fractional consistence on characteristics of iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The main purpose of research is to determine the influence by the small dispersive coal dust particles of the different fractional consistence on the technical characteristics of the vertical iodine air filter at nuclear power plant. The research on the transport properties of the small dispersive coal dust particles in the granular filtering medium of absorber in the vertical iodine air filter is completed in the case, when the modeled aerodynamic conditions are similar to the real aerodynamic conditions. It is shown that the appearance of the different fractional consistence of small dispersive coal dust particles with the decreasing dimensions down to the micro and nano sizes at the action of the air dust aerosol stream normally results in a significant change of distribution of the small dispersive coal dust particles masses in the granular filtering medium of an absorber in the vertical iodine air filter, changing the vertical iodine air filter aerodynamic characteristics. The precise characterization of the aerodynamic resistance of a model of the vertical iodine air filter is completed. The comparative analysis of the technical characteristics of the vertical and horizontal iodine air filters is also made.

I. M. Neklyudov; O. P. Ledenyov; L. I. Fedorova; P. Ya. Poltinin

2013-02-18T23:59:59.000Z

166

Iodine-131 releases from the Hanford Site, 1944--1947. Volume 1, Text: Hanford Environmental Dose Reconstruction Project  

SciTech Connect (OSTI)

Releases of fission product iodine-131 from separation plants at the Hanford reservation are calculated for the 1944 through 1947 period. Releases to the atmosphere were from the ventilation stacks of T and B separation plants. A reconstruction of daily separation plant operations forms the basis of the releases. The reconstruction traces the iodine-131 content of each fuel discharge from the B, D, and F Reactors to the dissolving step in the separation plants. Statistical computer modeling techniques are used to estimate hourly release histories based on sampling mathematical distribution functions that express the uncertainties in the source data and timing. The reported daily, monthly, and yearly estimates are averages and uncertainty ranges are based on 100 independent Monte Carlo ``realizations`` of the hourly release histories.

Heeb, C.M.

1992-10-01T23:59:59.000Z

167

Adsorbate-induced corrosion: anodic dissolution of palladium induced by chemisorbed iodine in halide-free acid solutions  

E-Print Network [OSTI]

as to style and content by: M. P. ria (Chair Co ittee) G. Vigh (Member) R. G. Anthony (Member) M. B. Hall (Head of Department) December 1991 ABSTRACT Adsorbate-Induced Corrosion: Anodic Dissolution of Palladium Induced by Chemisorbed Iodine... not anodically dissolve to an appreciable extent. Approach This investigation employed polycrystalline palladium foils, wires, and rods. Experimental measurements utilized a combination of conventional electrochemical techniques including voltammetry and...

Schimpf, Janemarie A

1991-01-01T23:59:59.000Z

168

Continuous-wave laser oscillation on the 1315 nm transition of atomic iodine pumped by O2,,a1  

E-Print Network [OSTI]

oxygen generator. There are many system issues having to do with weight, safety, and the ability.1063/1.1883317 The classic chemical oxygen-iodine laser COIL system1 operates on the I 2 P1/2 I 2 P3/2 electronic transi transfer between the metastable excited singlet oxygen molecule, O2 a1 de- noted as O2 1 hereafter

Carroll, David L.

169

Conversion and correction factors for historical measurements of Iodine-131 in Hanford-area vegetation, 1945--1947: Draft  

SciTech Connect (OSTI)

This report is a result of the Hanford Environmental Dose Reconstruction (HEDR) Project whose goal is to estimate the radiation dose that individuals could have received from emissions since 1944 at the US Department of Energy's (DOE) Hanford Site near Richland, Washington. The report describes in detail the reconstructed conversion and correction factors for historical measurements of iodine-131 in Hanford-area vegetation which was collected from the beginning of October 1945 through the end of December 1947.

Mart, E.I.; Denham, D.H.; Thiede, M.E.

1993-05-01T23:59:59.000Z

170

Determination of the Relative Amount of Fluorine in Uranium Oxyfluoride Particles using Secondary Ion Mass Spectrometry and Optical Spectroscopy  

SciTech Connect (OSTI)

Both nuclear forensics and environmental sampling depend upon laboratory analysis of nuclear material that has often been exposed to the environment after it has been produced. It is therefore important to understand how those environmental conditions might have changed the chemical composition of the material over time, particularly for chemically sensitive compounds. In the specific case of uranium enrichment facilities, uranium-bearing particles stem from small releases of uranium hexafluoride, a highly reactive gas that hydrolyzes upon contact with moisture from the air to form uranium oxyfluoride (UO{sub 2}F{sub 2}) particles. The uranium isotopic composition of those particles is used by the International Atomic Energy Agency (IAEA) to verify whether a facility is compliant with its declarations. The present study, however, aims to demonstrate how knowledge of time-dependent changes in chemical composition, particle morphology and molecular structure can contribute to an even more reliable interpretation of the analytical results. We prepared a set of uranium oxyfluoride particles at the Institute for Reference Materials and Measurements (IRMM, European Commission, Belgium) and followed changes in their composition, morphology and structure with time to see if we could use these properties to place boundaries on the particle exposure time in the environment. Because the rate of change is affected by exposure to UV-light, humidity levels and elevated temperatures, the samples were subjected to varying conditions of those three parameters. The NanoSIMS at LLNL was found to be the optimal tool to measure the relative amount of fluorine in individual uranium oxyfluoride particles. At PNNL, cryogenic laser-induced time-resolved U(VI) fluorescence microspectroscopy (CLIFS) was used to monitor changes in the molecular structure.

Kips, R; Kristo, M J; Hutcheon, I D; Amonette, J; Wang, Z; Johnson, T; Gerlach, D; Olsen, K B

2009-05-29T23:59:59.000Z

171

Resonance laser-plasma excitation of coherent terahertz phonons in the bulk of fluorine-bearing crystals under high-intensity femtosecond laser irradiation  

SciTech Connect (OSTI)

The dynamics of coherent phonons in fluorine-containing crystals was investigated by pump-probe technique in the plasma production regime. Several phonon modes, whose frequencies are overtones of the 0.38-THz fundamental frequency, were simultaneously observed in a lithium fluoride crystal. Phonons with frequencies of 1 and 0.1 THz were discovered in a calcium fluoride crystal and coherent phonons with frequencies of 1 THz and 67 GHz were observed in a barium fluoride crystal. Furthermore, in the latter case the amplitudes of phonon mode oscillations were found to significantly increase 15 ps after laser irradiation. (interaction of laser radiation with matter)

Potemkin, F V; Mareev, E I [International Laser Center, M. V. Lomonosov Moscow State University, Moscow (Russian Federation); Khodakovskii, N G [A M Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation); Mikheev, P M

2013-08-31T23:59:59.000Z

172

Abatement of Xenon and Iodine Emissions from Medical Isotope Production Facilities  

SciTech Connect (OSTI)

The capability of the International Monitoring System (IMS) to detect xenon from underground nuclear explosions is dependent on the radioactive xenon background. Adding to the background, medical isotope production (MIP) by fission releases several important xenon isotopes including xenon-133 and iodine-133 that decays to xenon-133. The amount of xenon released from these facilities may be equivalent to or exceed that released from an underground nuclear explosion. Thus the release of gaseous fission products within days of irradiation makes it difficult to distinguish MIP emissions from a nuclear explosion. In addition, recent shortages in molybdenum-99 have created interest and investment opportunities to design and build new MIP facilities in the United States and throughout the world. Due to the potential increase in the number of MIP facilities, a discussion of abatement technologies provides insight into how the problem of emission control from MIP facilities can be tackled. A review of practices is provided to delineate methods useful for abatement of medical isotopes.

Doll, Charles G. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Sorensen, Christina M. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Bowyer, Ted W. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Friese, Judah I. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Hayes, James C. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Hoffman, Emma L. [Australian Nuclear Science and Technology Organisation, Menai (Australia); Kephart, Rosara F. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

2014-04-01T23:59:59.000Z

173

Chalcogen-based aerogels as a multifunctional platform for remediation of radioactive iodine  

SciTech Connect (OSTI)

Aerogels employing chalcogen-based (i.e., S, Se, and/or Te) structural units and interlinking metals are termed chalcogels and have many emerging applications. Here, chalcogels are discussed in the context of nuclear fuel reprocessing and radioactive waste remediation. Motivated by previous work on removal of heavy metals in aqueous solution, we explored the application of germanium sulfide chalcogels as a sorbent for gas-phase I2 based on Pearson's Hard/Soft Acid-Base (HSAB) principle. This work was driven by a significant need for high-efficiency sorbents for I-129, a long-lived isotope evolved during irradiated UO2 nuclear fuel reprocessing. These chalcogel compositions are shown to possess an affinity for iodine gas, I2(g), at various concentrations in air and the affinity is attributed to a strong chemical attraction between the chalcogen and I2(g), according to the HSAB principle. The high sorption efficiency is facilitated by the high porosity as well as the exceptionally large surface area of the chalcogels.

Riley, Brian J.; Chun, Jaehun; Ryan, Joseph V.; Matyas, Josef; Li, Xiaohong S.; Matson, Dean W.; Sundaram, S. K.; Strachan, Denis M.; Vienna, John D.

2011-12-22T23:59:59.000Z

174

Preoperative irradiation, lymphadenectomy, and 125iodine implantation for patients with localized carcinoma of the prostate  

SciTech Connect (OSTI)

Fifty-four patients with clinically and surgically localized prostatic carcinoma were treated with low-dose preoperative irradiation (1050 cGy), pelvic lymphadenectomy, and interstitial /sup 125/Iodine implantation. The follow-up range is 2 to 9 years with a median follow-up of 5 years. Overall local tumor control is 92%. Actuarial 5-year survival is 86% and the actuarial disease-free survival at 5 years is 73%. Patients with poorly differentiated tumors have a significantly worse actuarial survival (62%) at 5 years than patients with well (95%) or moderately well differentiated tumors (93%), p = 0.04. Disease-free survival at 5 years was influenced by grade: well (100%), moderate (60%), and poor (48%), p = 0.03. Multivariate regression analysis indicates that only the degree of differentiation (p = 0.05) significantly impacts on survival. Both degree of differentiation (p = 0.04) and nodal status (p = 0.03) significantly influence disease-free survival. Potency has been maintained in 71% of patients potent at the time of implantation. Late reactions have been acceptable to date: bladder outlet obstruction (13%), mild proctitis (13%), cystourethritis (6%), incontinence (2%), and prostatic calculi (2%).

DeLaney, T.F.; Shipley, W.U.; O'Leary, M.P.; Biggs, P.J.; Prout, G.R. Jr.

1986-10-01T23:59:59.000Z

175

Detection of Gravitational Redshift on the Solar Disk by Using Iodine-Cell Technique  

E-Print Network [OSTI]

With an aim to examine whether the predicted solar gravitational redshift can be observationally confirmed under the influence of the convective Doppler shift due to granular motions, we attempted measuring the absolute spectral line-shifts on a large number of points over the solar disk based on an extensive set of 5188-5212A region spectra taken through an iodine-cell with the Solar Domeless Telescope at Hida Observatory. The resulting heliocentric line shifts at the meridian line (where no rotational shift exists), which were derived by finding the best-fit parameterized model spectrum with the observed spectrum and corrected for the earth's motion, turned out to be weakly position-dependent as ~ +400 m/s near the disk center and increasing toward the limb up to ~ +600 m/s (both with a standard deviation of sigma ~ 100 m/s). Interestingly, this trend tends to disappear when the convectiveshift due to granular motions (~-300 m/s at the disk center and increasing toward the limb; simulated based on the two-c...

Takeda, Yoichi

2012-01-01T23:59:59.000Z

176

LABORATORY REPORT ON IODINE ({sup 129}I AND {sup 127}I) SPECIATION, TRANSFORMATION AND MOBILITY IN HANFORD GROUNDWATER, SUSPENDED PARTICLES AND SEDIMENTS  

SciTech Connect (OSTI)

The Hanford Site in eastern Washington produced plutonium for several decades and in the process generated billions of gallons of radioactive waste. Included in this complex mixture of waste was 50 Ci of iodine-129 ({sup 129}I). Iodine-129’s high abundance, due to its high fission yield, and extreme toxicity result in iodine-129 becoming a key risk driver at many Department of Energy (DOE) sites. The mobility of radioiodine in arid environments, such as the Hanford Site, depends largely on its chemical speciation and is also greatly affected by many other environmental factors, especially natural sediment organic matter (SOM). Groundwater radioiodine speciation has not been measured in arid regions with major plumes or large disposed {sup 129}I inventories, including the Hanford Site, Idaho National Laboratory, and Nevada Test Site. In this study, stable iodine-127 and radioiodine-129 speciation, pH, and dissolved organic carbon (DOC) of groundwater samples collected from seven wells located in the 200-West Area of the Hanford site were investigated. The most striking finding was that iodate (IO{sub 3}{sup -}) was the most abundant species. Unexpectedly, iodide (I{sup -}), which was likely the form of iodine in the source materials and the expected dominant groundwater species based on thermodynamic considerations, only accounted for 1-2% of the total iodine concentration. It is likely that the relatively high pH and the low abundance of sedimentary organic matter (SOM) that is present at the site slowed down or even inhibited the reduction of iodate, as SOM abiotically reduce iodate into iodide. Moreover, a study on the kinetics of iodide and iodate uptake and aqueous speciation transformation by three representative subsurface Hanford sediments was performed over a period of about one month. This study was carried out by using iodide-125 or iodate-125 at the ambient iodine-127concentration found at the site. Iodate K{sub d} values were on average 89% greater than iodide K{sub d} values, and the K{sub d} values for both species tended to increase with the amount of organic carbon (OC) present in the sediment. It is especially noteworthy that this trend existed at the very low OC concentrations that naturally exist in the Hanford sediments. Iodine and OC can form essentially irreversible covalent bonds, thereby providing a yet unstudied {sup 129}I retardation reaction at the Hanford Site. In addition to the transformation of iodine species, the sediment collected from the vadose zone also released stable iodide into the aqueous phase. It was found that the three sediments all took up the ambient iodate from the groundwater and slowly transformed it into iodide under the laboratory conditions, likely dependent on the abundance of reducing agents such as organic matter and Fe{sup 2+}. Therefore two competitive iodine processes were identified, the tendency for the sediment to reduce iodate to iodide, and the groundwater chemistry to maintain the iodine as iodate, presumably it is largely the result of natural pH and dissolved O{sub 2}/Eh levels. Suspended carbonate (and silica) particles collected from Hanford groundwater contained elevated amounts of iodine (142 ± 8 ?g/g iodine), consisting mainly of iodate (>99%). Iodate was likely incorporated into the carbonate structure during calcite precipitation upon degasing of CO{sub 2} as the groundwater samples were removed from the subsurface. This concentration of groundwater iodate in precipitated carbonate has implication to long-term fate and transport of 129I and on active in-situ {sup 129}I groundwater remediation. This study provides some of the first groundwater radioiodine speciation studies conducted in arid environments and provides much needed mechanistic descriptions to permit making informed decisions about low-cost/high intellectual input remediation options, such as monitored natural attenuation, or long-term stewardship of nuclear waste disposal sites.

Kaplan, D.; Santschi, P.; Xu, C.; Zhang, S.; Ho, Y.; Li, H.; Schwehr, K.

2012-09-30T23:59:59.000Z

177

Generation of concentration density maxima of small dispersive coal dust particles in horizontal iodine air filter at air-dust aerosol blow  

E-Print Network [OSTI]

The spatial distributions of the small dispersive coal dust particles with the nano and micro sizes in the granular filtering medium with the cylindrical coal granules in the absorber in the horizontal iodine air filter during its long term operation at the nuclear power plant are researched. It is shown that the concentration density maxima of the small dispersive coal dust particles appear in the granular filtering medium with the cylindrical coal absorbent granules in the horizontal iodine air filter at an action by the air dust aerosol blow. The comparison of the measured aerodynamic resistances of the horizontal and vertical iodine air filters is conducted. The main conclusion is that the magnitude of the aerodynamic resistance of the horizontal iodine air filters is much smaller in comparison with the magnitude of the aerodynamic resistance of the vertical iodine air filters at the same loads of the air dust aerosol volumes. It is explained that the direction of the air dust aerosol blow and the directi...

Neklyudov, I M; Fedorova, L I; Poltinin, P Ya

2013-01-01T23:59:59.000Z

178

Separation, Concentration, and Immobilization of Technetium and Iodine from Alkaline Supernate Waste  

SciTech Connect (OSTI)

Development of remediation technologies for the characterization, retrieval, treatment, concentration, and final disposal of radioactive and chemical tank waste stored within the Department of Energy (DOE) complex represents an enormous scientific and technological challenge. A combined total of over 90 million gallons of high-level waste (HLW) and low-level waste (LLW) are stored in 335 underground storage tanks at four different DOE sites. Roughly 98% of this waste is highly alkaline in nature and contains high concentrations of nitrate and nitrite salts along with lesser concentrations of other salts. The primary waste forms are sludge, saltcake, and liquid supernatant with the bulk of the radioactivity contained in the sludge, making it the largest source of HLW. The saltcake (liquid waste with most of the water removed) and liquid supernatant consist mainly of sodium nitrate and sodium hydroxide salts. The main radioactive constituent in the alkaline supernatant is cesium-137, but strontium-90, technetium-99, and transuranic nuclides are also present in varying concentrations. Reduction of the radioactivity below Nuclear Regulatory Commission (NRC) limits would allow the bulk of the waste to be disposed of as LLW. Because of the long half-life of technetium-99 (2.1 x 10 5 y) and the mobility of the pertechnetate ion (TcO 4 - ) in the environment, it is expected that technetium will have to be removed from the Hanford wastes prior to disposal as LLW. Also, for some of the wastes, some level of technetium removal will be required to meet LLW criteria for radioactive content. Therefore, DOE has identified a need to develop technologies for the separation and concentration of technetium-99 from LLW streams. Eichrom has responded to this DOE-identified need by demonstrating a complete flowsheet for the separation, concentration, and immobilization of technetium (and iodine) from alkaline supernatant waste.

James Harvey; Michael Gula

1998-12-07T23:59:59.000Z

179

High pressure sulfuric acid decomposition experiments for the sulfur-iodine thermochemical cycle.  

SciTech Connect (OSTI)

A series of three pressurized sulfuric acid decomposition tests were performed to (1) obtain data on the fraction of sulfuric acid catalytically converted to sulfur dioxide, oxygen, and water as a function of temperature and pressure, (2) demonstrate real-time measurements of acid conversion for use as process control, (3) obtain multiple measurements of conversion as a function of temperature within a single experiment, and (4) assess rapid quenching to minimize corrosion of metallic components by undecomposed acid. All four of these objectives were successfully accomplished. This report documents the completion of the NHI milestone on high pressure H{sub 2}SO{sub 4} decomposition tests for the Sulfur-Iodine (SI) thermochemical cycle project. All heated sections of the apparatus, (i.e. the boiler, decomposer, and condenser) were fabricated from Hastelloy C276. A ceramic acid injection tube and a ceramic-sheathed thermocouple were used to minimize corrosion of hot liquid acid on the boiler surfaces. Negligible fracturing of the platinum on zirconia catalyst was observed in the high temperature decomposer. Temperature measurements at the exit of the decomposer and at the entry of the condenser indicated that the hot acid vapors were rapidly quenched from about 400 C to less than 20 C within a 14 cm length of the flow path. Real-time gas flow rate measurements of the decomposition products provided a direct measurement of acid conversion. Pressure in the apparatus was preset by a pressure-relief valve that worked well at controlling the system pressure. However, these valves sometimes underwent abrupt transitions that resulted in rapidly varying gas flow rates with concomitant variations in the acid conversion fraction.

Velasquez, Carlos E; Reay, Andrew R.; Andazola, James C.; Naranjo, Gerald E.; Gelbard, Fred

2005-09-01T23:59:59.000Z

180

The influence of iodinated casein and high fat diets on the performance and incidence of fatty livers in laying hens  

E-Print Network [OSTI]

THE INl'LUENCE OF IODINATED CASEIN AND HIGH FAT DIETS ON THE PEBFORMANC' AND INCIDENCE OF FATTY LIVERS IN LAYING H"NS A Thesis Loui" Lee Young Submitted to the Graduate College of the Texas A&II Univer -ity in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE January 1967 Major Subject oultry Science THE INPLUENCE OP IODINA'I "D CAS IN AND HIGH FAT DIETS ON THE P, HFOHMAI'JCE AND INCIDENCE OP PATTY LIVENS IN LAYING HENS A Thesis Louis Lee Young Approved...

Young, Louis Lee

1967-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Proceedings of the International Conference on Lasers `95, eds. V.J. Corcoran and T.A. Goldman, STS Press, McLean VA, 1996, pp. 225-231. OPTIMIZING HIGH PRESSURE CHEMICAL OXYGEN-IODINE LASERS  

E-Print Network [OSTI]

Press, McLean VA, 1996, pp. 225-231. OPTIMIZING HIGH PRESSURE CHEMICAL OXYGEN-IODINE LASERS David L laser model was baselined to existing oxygen-iodine research assessment and device improvement chemical(1) generator. It may be possible to improve high pressure RADICL performance by increasing the number of large

Carroll, David L.

182

Novel fluorinated laser dyes  

DOE Patents [OSTI]

A novel class of dye is disclosed which is particularly efficient and stable for dye layer applications, lasing between 540 and 570 nm.

Hammond, Peter R. (Livermore, CA); Feeman, James F. (Wyomissing, PA)

1990-01-01T23:59:59.000Z

183

Fluorinated laser dyes  

DOE Patents [OSTI]

A novel class of dye is disclosed which is particularly efficient and stable for dye laser applications, lasing between 540 and 570 nm.

Hammond, Peter R. (Livermore, CA); Feeman, James F. (Wyomissing, PA)

1992-01-01T23:59:59.000Z

184

Novel fluorinated laser dyes  

DOE Patents [OSTI]

A novel class of dye is disclosed which is particularly efficient and stable for dye laser applications, lasing between 540 and 570 nm.

Hammond, Peter R. (Livermore, CA); Feeman, James F. (Wyomissing, PA)

1991-01-01T23:59:59.000Z

185

Fluorine sites in glasses and transparent glass-ceramics of the system Na{sub 2}O/K{sub 2}O/Al{sub 2}O{sub 3}/SiO{sub 2}/BaF{sub 2}  

SciTech Connect (OSTI)

The transparent glass-ceramics obtained in the silicate system Na{sub 2}O/K{sub 2}O/SiO{sub 2}/BaF{sub 2} show homogeneously dispersed BaF{sub 2} nano crystals with a narrow size distribution. The X-ray diffraction and the nuclear magnetic resonance spectroscopy were applied to glasses and the respective glass-ceramics in order to clarify the crystallization mechanism and the role of fluorine during crystallization. With an increasing annealing time, the concentration and also the number of crystals remain approximately constant. With an increasing annealing temperature, the crystalline fraction increases until a saturation limit is reached, while the number of crystals decreases and the size of the crystals increases. Fluoride in the glassy network occurs as Al-F-Ba, Al-F-Na and also as Ba-F structures. The latter are transformed into crystalline BaF{sub 2} and fluoride is removed from the Al-F-Ba/Na bonds. However, some fluorine is still present in the glassy phase after the crystallization. -- Graphical abstract: The X-ray diffraction and the nuclear magnetic resonance spectroscopy were applied to glasses in the silicate system Na{sub 2}O/K{sub 2}O/SiO{sub 2}/BaF{sub 2} and the respective glass-ceramics with BaF{sub 2} nano crystals in order to clarify the crystallization mechanism and the role of fluorine during crystallization. Display Omitted Research highlights: {yields} BaF{sub 2} nano crystals are precipitated from a silicate glass system. {yields} Ostwald ripening during the late stage of crystallization does not occur. {yields} Fluorine in the glass is coordinated with Ba as well as Al together with Ba or Na.{yields} In the glass-ceramics, the residual fluorine is coordinated as Al-F-Ba/Na.

Bocker, Christian, E-mail: christian.bocker@uni-jena.d [Otto-Schott-Institut, Jena University, Fraunhoferstr. 6, 07743 Jena (Germany); Munoz, Francisco; Duran, Alicia [Instituto de Ceramica y Vidrio (CSIC), Kelsen 5, 28049 Madrid (Spain); Ruessel, Christian [Otto-Schott-Institut, Jena University, Fraunhoferstr. 6, 07743 Jena (Germany)

2011-02-15T23:59:59.000Z

186

Development of a portable mass spectrometric system for determination of isotopic composition of solid uranium samples using fluorine volatilization. Final report  

SciTech Connect (OSTI)

Using hardware and materials supplied by LANL, a prototype quadrupole mass spectrometer system designed for portable field analysis of isotopic composition of solid uranium samples was assembled and tested. The system contained the capability for fluorine volatilization of solid uranium samples with gas introduction, which was successfully tested and demonstrated using 100 mg samples of U{sub 3}O{sub 8}. Determination of precision and accuracy for measuring isotopic composition was performed using isotopic standards. Use with soil samples containing uranium were also attempted. Silicates in the soil forming SiF{sub 4} were found to be a kinetic bottleneck to the formation of UF{sub 6}. This could be avoided by performing some sort of chemical separation as a pre-treatment step, which was demonstrated using nitric acid.

Loge, G.

1994-09-30T23:59:59.000Z

187

Gain and continuous-wave laser oscillation on the 1315 nm atomic iodine transition pumped by an air-helium electric discharge  

E-Print Network [OSTI]

peroxide and Cl2 gas. Logistic issues with this chemical sin- glet oxygen generator motivated many by a radio-frequency-excited electric discharge sustained in a dry air-He­NO gas mixture. Active oxygen American Institute of Physics. DOI: 10.1063/1.2957678 The classical chemical oxygen iodine laser COIL re

Carroll, David L.

188

Effects of fluorine incorporation into HfO{sub 2} gate dielectrics on InP and In{sub 0.53}Ga{sub 0.47}As metal-oxide-semiconductor field-effect-transistors  

SciTech Connect (OSTI)

In this work, the effects of fluorine (F) incorporation on electrical characteristics of HfO{sub 2}/InP and HfO{sub 2}/In{sub 0.53}Ga{sub 0.47}As gate stack are presented. F had been introduced into HfO{sub 2} gate dielectric by postgate CF{sub 4} plasma treatment, which was confirmed by x-ray photoelectron spectroscopy analysis and a secondary ion mass spectrometry technique. Compared to the control sample, fluorinated samples had great improvements in subthreshold swing, hysteresis, the normalized extrinsic transconductance, and the normalized drain current. These improvements can be attributed to the reduction in fixed charge in the HfO{sub 2} bulk and less interface trap density at the HfO{sub 2}/III-V interface.

Chen Yenting; Zhao Han; Wang Yanzhen; Xue Fei; Zhou Fei; Lee, Jack C. [Department of Electrical and Computer Engineering, Microelectronics Research Center, University of Texas at Austin, Texas 78758 (United States)

2010-06-21T23:59:59.000Z

189

New oxyfluoride glass with high fluorine content and laser patterning of nonlinear optical BaAlBO{sub 3}F{sub 2} single crystal line  

SciTech Connect (OSTI)

A new oxyfluoride glass of 50BaF{sub 2}-25Al{sub 2}O{sub 3}-25B{sub 2}O{sub 3} (mol. %) with a large fraction of fluorine, i.e., F/(F + O) = 0.4, was prepared using a conventional melt-quenching method in order to synthesize new glass-ceramics containing nonlinear optical oxyfluoride crystals. The refractive index at 632.8 nm and ultra-violet cutoff wavelength of the glass were 1.564 and {approx}200 nm, respectively. Eu{sup 3+} ions in the glass showed a high quantum yield of 88% in the photoluminescence spectrum in the visible region. BaAlBO{sub 3}F{sub 2} crystals (size: 50-100 nm) showing second harmonic generations were formed through the crystallization of the glass. Lines consisting of BaAlBO{sub 3}F{sub 2} crystals were patterned successfully on the glass surface by laser irradiations (Yb:YVO{sub 4} laser with a wavelength of 1080 nm, laser power of 1.1 W, scanning speed of 8 {mu}m/s). High resolution transmission electron microscope observations combined with a focused ion beam technique indicate that BaAlBO{sub 3}F{sub 2} crystals are highly oriented just like a single crystal. The present study proposes that the new oxyfluoride glass and glass-ceramics prepared have a high potential for optical device applications.

Shionozaki, K.; Honma, T.; Komatsu, T. [Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka-cho, Nagaoka 940-2188 (Japan)

2012-11-01T23:59:59.000Z

190

Conversion and correction factors for historical measurements of Iodine-131 in Hanford-area vegetation, 1945--1947: Draft. Hanford Environmental Dose Reconstruction Project  

SciTech Connect (OSTI)

This report is a result of the Hanford Environmental Dose Reconstruction (HEDR) Project whose goal is to estimate the radiation dose that individuals could have received from emissions since 1944 at the US Department of Energy`s (DOE) Hanford Site near Richland, Washington. The report describes in detail the reconstructed conversion and correction factors for historical measurements of iodine-131 in Hanford-area vegetation which was collected from the beginning of October 1945 through the end of December 1947.

Mart, E.I.; Denham, D.H.; Thiede, M.E.

1993-05-01T23:59:59.000Z

191

The application of iodine and magnetic susceptibility surface geochemical surveys in the Lodgepole Play, Eastern Williston Basin, North Dakota  

SciTech Connect (OSTI)

The use of surface geochemistry as a first pass exploration tool is becoming more prevalent in petroleum exploration. This is especially true due to the high cost of 2-D and 3-D surveys in defining small targets such as the Waulsortian mounds of the Lodgepole Formation. Surface geochemical surveys are very effective in pinpointing specific target areas for seismic surveying and thus reducing costs. Presented are examples of surface geochemical surveys utilizing magnetic susceptibility and iodine methods in delineating reservoirs in the Lodgepole, Mission Canyon and Red River formations. The types of surveys presented vary from reconnaissance to detail and examples of how to define a grid will be discussed. Surface geochemical surveys can be very effective when the areal extent of the target(s) and the purpose of the survey are clearly defined prior to implementation. By determining which areas have microseepage and which areas do not, surface geochemistry can be a very effective tool in focusing exploration efforts and maximizing exploration dollars.

Tedesco, S.A. [Atoka Geochemical Services Corp., Englewood, CO (United States)

1996-06-01T23:59:59.000Z

192

Fluorination mechanisms of Al{sub 2}O{sub 3} and Y{sub 2}O{sub 3} surfaces irradiated by high-density CF{sub 4}/O{sub 2} and SF{sub 6}/O{sub 2} plasmas  

SciTech Connect (OSTI)

Fluorination of Al{sub 2}O{sub 3} and Y{sub 2}O{sub 3} surfaces was investigated by irradiating high-density, helicon-wave CF{sub 4}/O{sub 2} and SF{sub 6}/O{sub 2} plasmas. The Al{sub 2}O{sub 3} surface bombarded by high-flux positive ions of the CF{sub 4}/O{sub 2} plasma was fluorinated significantly. On contrast, Y{sub 2}O{sub 3} was less fluorinated than Al{sub 2}O{sub 3} when they were irradiated by the same CF{sub 4}/O{sub 2} plasma. The analysis of the Al{sub 2}O{sub 3} surface irradiated by the CF{sub 4}/O{sub 2} plasma suggests that the fluorination is triggered by reactions between fluorocarbon deposit and Al-O bonding with the assistance of ion bombardment. On the other hand, irradiation of the SF{sub 6}/O{sub 2} plasma induced less significant fluorination on the Al{sub 2}O{sub 3} surface. This suggests a lower reaction probability between sulfur fluoride deposit and Al-O bonding. The difference in the fluorination of the Al{sub 2}O{sub 3} and Y{sub 2}O{sub 3} surfaces induced by the irradiations of the CF{sub 4}/O{sub 2} and SF{sub 6}/O{sub 2} plasmas is understood by comparing the bonding energies of C-O, S-O, Al-O, and Y-O.

Miwa, Kazuhiro; Takada, Noriharu; Sasaki, Koichi [Department of Electrical Engineering and Computer Science, Nagoya University, Nagoya, 464-8603 (Japan); Plasma Nanotechnology Research Center, Nagoya University, Nagoya 464-8603 (Japan)

2009-07-15T23:59:59.000Z

193

Combinatorial design and synthesis of peptidomimics and small molecules for protein-protein interactions  

E-Print Network [OSTI]

pharmacophores and to adjust the solubilities of the products. The fluorinated template also gave libraries of cyclic peptidomimetics on solid phase in good yields and purities. These libraries have improved water solubility over the iodinated libraries. The 3...

Park, Chihyo

2007-04-25T23:59:59.000Z

194

Fluorination of the cyanogen halides  

E-Print Network [OSTI]

silver has a coordination number of 12 two, one might speculate that a coordination compound la formed with a silver fluoride on both ends of the cyanogen todlde molecule. This arrangement would satisfy one silver with a fluoride and a cyanide... copper caps which were sliver soldered ln place. Copper tubing entrance and exit tubes were silver soldered to the top of the pot. The pipe union formed a leak proof system which could be assembled with reactants, and disassembled after reaction...

Ward, Raymond Anthony

1960-01-01T23:59:59.000Z

195

JOURNAL DE PHYSIQUE ColZoque C9, suppZe'ment au nO1l, Tome 41, novembre 1980, page C9-449 A POTENTIAL ATOMIC IODINE LASER PUMPED BY ELECTRICALLY GENERATED 'A OXYGEN  

E-Print Network [OSTI]

-449 A POTENTIAL ATOMIC IODINE LASER PUMPED BY ELECTRICALLY GENERATED 'A OXYGEN G. Fournier, J. Bonnet and D ation. This paper shows that an electron generator of 1~ oxygen [21 . A condition beam controlled discharge could be an for lasing is a concentration ratio ['A] / efficient oxygen generator to lase with C3z

Paris-Sud XI, Université de

196

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antin...

Ledenyov, Oleg P

2013-01-01T23:59:59.000Z

197

Correlation of radioactive-waste-treatment costs and the environmental impact of waste effluents in the nuclear fuel cycle: conversion of yellow cake to uranium hexafluoride. Part II. The solvent extraction-fluorination process  

SciTech Connect (OSTI)

A cost/benefit study was made to determine the cost and effectiveness of radioactive waste (radwaste) treatment systems for decreasing the release of radioactive materials and chemicals from a model uranium hexafluoride (UF/sub 6/) production plant using the solvent extraction-fluorination process, and to evaluate the radiological impact (dose commitment) of the release materials on the environment. The model plant processes 10,000 metric tons of uranium per year. Base-case waste treatment is the minimum necessary to operate the process. Effluents meet the radiological requirements listed in the Code of Federal Regulations, Title 10, Part 20 (10 CFR 20), Appendix B, Table II, but may not be acceptable chemically at all sites. Additional radwaste treatment techniques are applied to the base-case plant in a series of case studies to decrease the amounts of radioactive materials released and to reduce the amounts of radioactive materials released and to reduce the radiological dose commitment to the population in the surrounding area. The costs for the added waste treatment operations and the corresponding dose committment are correlated with the annual cost for treatment of the radwastes. The status of the radwaste treatment methods used in the case studies is discussed. Much of the technology used in the advanced cases will require development and demonstration, or else is proprietary and unavailable for immediate use. The methodology and assumptions for the radiological doses are found in ORNL-4992.

Sears, M.B.; Etnier, E.L.; Hill, G.S.; Patton, B.D.; Witherspoon, J.P.; Yen, S.N.

1983-03-01T23:59:59.000Z

198

Standard test method for the analysis of refrigerant 114, plus other carbon-containing and fluorine-containing compounds in uranium hexafluoride via fourier-transform infrared (FTIR) spectroscopy  

E-Print Network [OSTI]

1.1 This test method covers determining the concentrations of refrigerant-114, other carbon-containing and fluorine-containing compounds, hydrocarbons, and partially or completely substituted halohydrocarbons that may be impurities in uranium hexafluoride. The two options are outlined for this test method. They are designated as Part A and Part B. 1.1.1 To provide instructions for performing Fourier-Transform Infrared (FTIR) spectroscopic analysis for the possible presence of Refrigerant-114 impurity in a gaseous sample of uranium hexafluoride, collected in a "2S" container or equivalent at room temperature. The all gas procedure applies to the analysis of possible Refrigerant-114 impurity in uranium hexafluoride, and to the gas manifold system used for FTIR applications. The pressure and temperatures must be controlled to maintain a gaseous sample. The concentration units are in mole percent. This is Part A. 1.2 Part B involves a high pressure liquid sample of uranium hexafluoride. This method can be appli...

American Society for Testing and Materials. Philadelphia

2004-01-01T23:59:59.000Z

199

The development and deployment of a ground-based, laser-induced fluorescence instrument for the in situ detection of iodine monoxide radicals  

SciTech Connect (OSTI)

High abundances of iodine monoxide (IO) are known to exist and to participate in local photochemistry of the marine boundary layer. Of particular interest are the roles IO plays in the formation of new particles in coastal marine environments and in depletion episodes of ozone and mercury in the Arctic polar spring. This paper describes a ground-based instrument that measures IO at mixing ratios less than one part in 10{sup 12}. The IO radical is measured by detecting laser-induced fluorescence at wavelengths longer that 500 nm. Tunable visible light is used to pump the A{sup 2}?{sub 3/2} (v{sup ?} = 2) ? X{sup 2}?{sub 3/2} (v{sup ?} = 0) transition of IO near 445 nm. The laser light is produced by a solid-state, Nd:YAG-pumped Ti:Sapphire laser at 5 kHz repetition rate. The laser-induced fluorescence instrument performs reliably with very high signal-to-noise ratios (>10) achieved in short integration times (<1 min). The observations from a validation deployment to the Shoals Marine Lab on Appledore Island, ME are presented and are broadly consistent with in situ observations from European Coastal Sites. Mixing ratios ranged from the instrumental detection limit (<1 pptv) to 10 pptv. These data represent the first in situ point measurements of IO in North America.

Thurlow, M. E., E-mail: thurlow@huarp.harvard.edu; Hannun, R. A.; Lapson, L. B.; Anderson, J. G. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States)] [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); Co, D. T. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States) [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); Argonne-Northwestern Solar Energy Research Center and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113 (United States); O'Brien, A. S. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States) [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Hanisco, T. F. [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States) [Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138 (United States); NASA Goddard Space Flight Center, Code 614, Greenbelt, Maryland 20771 (United States)

2014-04-15T23:59:59.000Z

200

Distribution of small dispersive coal dust particles and absorbed radioactive chemical elements in conditions of forced acoustic resonance in iodine air filter at nuclear power plant  

E-Print Network [OSTI]

The physical features of distribution of the small dispersive coal dust particles and the adsorbed radioactive chemical elements and their isotopes in the absorber with the granular filtering medium with the cylindrical coal granules were researched in the case of the intensive air dust aerosol stream flow through the iodine air filter (IAF). It was shown that, at the certain aerodynamic conditions in the IAF, the generation of the acoustic oscillations is possible. It was found that the acoustic oscillations generation results in an appearance of the standing acoustic waves of the air pressure (density) in the IAF. In the case of the intensive blow of the air dust aerosol, it was demonstrated that the standing acoustic waves have some strong influences on both: 1) the dynamics of small dispersive coal dust particles movement and their accumulation in the IAF; 2) the oversaturation of the cylindrical coal granules by the adsorbed radioactive chemical elements and their isotopes in the regions, where the antinodes of the acoustic waves are positioned. Finally, we completed the comparative analysis of the theoretical calculations with the experimental results, obtained for the cases of: 1) the experimental aerodynamic modeling of physical processes of the absorbed radioactive chemical elements and their isotopes distribution in the IAF; and 2) the gamma-activation spectroscopy analysis of the absorbed radioactive chemical elements and their isotopes distribution in the IAF. We made the innovative propositions on the necessary technical modifications with the purpose to improve the IAF technical characteristics and increase its operational time at the nuclear power plant (NPP), going from the completed precise characterization of the IAF parameters at the long term operation.

Oleg P. Ledenyov; Ivan M. Neklyudov

2013-06-14T23:59:59.000Z

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


201

Iodine-131 Releases from Radioactive Lanthanum Processing at the X-10 Site in Oak Ridge, Tennessee (1944-1956)- An Assessment of Quantities released, Off-Site Radiation Doses, and Potential Excess Risks of Thyroid Cancer, Volume 1  

SciTech Connect (OSTI)

In the early 1990s, concern about the Oak Ridge Reservation's past releases of contaminants to the environment prompted Tennessee's public health officials to pursue an in-depth study of potential off-site health effects at Oak Ridge. This study, the Oak Ridge dose reconstruction, was supported by an agreement between the U.S. Department of Energy (DOE) and the State of Tennessee, and was overseen by a 12-member panel appointed by Tennessee's Commissioner of Health. One of the major contaminants studied in the dose reconstruction was radioactive iodine, which was released to the air by X-10 (now called Oak Ridge National Laboratory) as it processed spent nuclear reactor fuel from 1944 through 1956. The process recovered radioactive lanthanum for use in weapons development. Iodine concentrates in the thyroid gland so health concerns include various diseases of the thyroid, such as thyroid cancer. The large report, ''Iodine-131 Releases from Radioactive Lanthanum Processing at the X-10 Site in Oak Ridge, Tennessee (1944-1956) - An Assessment of Quantities Released, Off-site Radiation Doses, and Potential Excess Risks of Thyroid Cancer,'' is in two volumes. Volume 1 is the main body of the report, and Volume 1A, which has the same title, consists of 22 supporting appendices. Together, these reports serve the following purposes: (1) describe the methodologies used to estimate the amount of iodine-131 (I-131) released; (2) evaluate I-131's pathway from air to vegetation to food to humans; (3) estimate doses received by human thyroids; (4) estimate excess risk of acquiring a thyroid cancer during ones lifetime; and (5) provide equations, examples of historical documents used, and tables of calculated values. Results indicate that females born in 1952 who consumed milk from a goat pastured a few miles east of X-10 received the highest doses from I-131 and would have had the highest risks of contracting thyroid cancer. Doses from cow's milk are considerably less . Detailed dose and risk estimates, and associated uncertainties, for other contaminants studied for the Oak Ridge dose reconstruction are presented in several other technical reports. One way to easily locate them in OSTI's Information Bridge is by searching the ''report number field'' for the number DOE/OR/21981*. Be sure to place the asterisk after the base number so your search can list the complete series of reports related to Oak Ridge Dose Reconstruction.

Apostoaei, A.I.; Burns, R.E.; Hoffman, F.O.; Ijaz, T.; Lewis, C.J.; Nair, S.K.; Widner, T.E.

1999-07-01T23:59:59.000Z

202

Equilibria in aqueous iodine solutions  

E-Print Network [OSTI]

for the determination of pH and. 1odide concentration. This instrument, reads pH to 0. 001 pH units and millivolts to F 1 mv. An Orion Specific Ion Electrode, Iodide Model 94-53, was used in the iodide determination. A Corning Triple Purpose pH glass elect- rode... with such electrodes fully confirms this statement. The optimum concentration of Solution I was found to be between 5 x 10 and 10 H iodide. Error in ZIIF Although short-term reproducibility to within 0. 001 26 pH unit can in principle be achieved. with the glass...

Burger, Joanne Denise

1970-01-01T23:59:59.000Z

203

Method of preparing novel fluorinated laser dyes  

DOE Patents [OSTI]

A novel class of dye is disclosed which is particularly efficient and stable for dye laser applications, lasing between 540 and 570 nm.

Hammond, Peter R. (Livermore, CA); Freeman, James F. (Wyomissing, PA)

1991-01-01T23:59:59.000Z

204

Magnetic Resonance Pulse Sequences for Fluorine-19  

E-Print Network [OSTI]

successful cell tracking and quantification of cells. The primary objective of this work was to enable the study of ^(19)F MRI on the Siemens MAGNETOM Verio scanner located at the Texas A&M Institute for Preclinical Studies (TIPS) facility at Texas A...

Terry, Robin

2014-07-11T23:59:59.000Z

205

Original Fluorinated Surfactants Potentially Non-Bioaccumulable  

E-Print Network [OSTI]

to perfluorooctanoic acid (PFOA), ammonium perfluorooctanoate (APFO), or perfluorooctylsulfonic acid (PFOS) regarded are perfluorooctanoic acid (C7F15CO2H, PFOA), ammonium perfluorooctanoate (APFO), and perfluorooctane sulphonate (C8F17 waters, rivers, drinking and rain waters, fresh water ecosystems air[11], urban centers, soils, sediments

Boyer, Edmond

206

Fluorinated Precursors of Superconducting Ceramics - Energy Innovation  

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

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207

Fluorinated Precursors of Superconducting Ceramics - Energy Innovation  

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

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

208

Tunable Electrochemical Properties of Fluorinated Graphene. | 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 SecurityTensile Strain Switched Ferromagnetism in Layered NbS2TopoPortalBRDF EffectsPacific:

209

The {sup 2}P{sub 1/2} {yields} {sup 2}P{sub 3/2} laser transition in atomic iodine and the problem of search for signals from extraterrestrial intelligence  

SciTech Connect (OSTI)

It is proposed to search for signals from extraterrestrial intelligence (ETI) at a wavelength of 1.315 {mu}m of the laser {sup 2}P{sub 1/2} {yields} {sup 2}P{sub 3/2} transition in the atomic iodine, which can be used for this purpose as the natural frequency reference. The search at this wavelength is promising because active quantum filters (AQFs) with the quantum sensitivity limit have been developed for this wavelength, which are capable of receiving laser signals, consisting of only a few photons, against the background of emission from a star under study. In addition, high-power iodine lasers emitting diffraction-limited radiation at 1.315 {mu}m have been created, which highly developed ETI also can have. If a ETI sends in our direction a diffraction-limited 10-ns, 1-kJ laser pulse with the beam diameter of 10 m, a receiver with an AQF mounted on a ten-meter extra-atmospheric optical telescope can detect this signal at a distance of up to 300 light years, irrespective of the ETI position on the celestial sphere. The realisation of the projects for manufacturing optical telescopes of diameter 30 m will increase the research range up to 2700 light years. A weak absorption of the 1.315-{mu}m radiation in the Earth atmosphere (the signal is attenuated by less than 20%) allows the search for ETI signals by using ground telescopes equipped with adaptive optical systems. (laser applications and other topics in quantum electronics)

Kutaev, Yu F; Mankevich, S K ['Astrofizika' Research and Production Association (Russian Federation); Nosach, O Yu; Orlov, E P [P.N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2007-07-31T23:59:59.000Z

210

Oak Ridge Reservation Volume 3. Records relating to RaLa, iodine-131, and cesium-137 at the Oak Ridge National Laboratory and the Oak Ridge Operations Office: A guide to record series of the Department of Energy and its contractors  

SciTech Connect (OSTI)

The purpose of this guide is to describe each of the documents and record series pertaining to the production, release, and disposal of radioactive barium-lanthanum (RaLa), iodine-131, and cesium-137 at the Department of Energy`s (DOE) Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee. History Associates Incorporated (HAI) prepared this guide as part of DOE`s Epidemiologic Records Inventory Project, which seeks to verify and conduct inventories of epidemiologic and health-related records at various DOE and DOE contractor sites. This introduction briefly describes the Epidemiologic Records Inventory Project and HAI`s role. It provides information on the history of the DOE-Oak Ridge Reservation (ORR), particularly ORNL. Specific attention is given to the production of RaLa and the fission products iodine-131 and cesium-137. This introduction also describes the methodologies HAI used in the selection and inventorying of documents and record series pertaining to RaLa, iodine-131, and cesium-137, and in the production of this guide. Concluding paragraphs describe the arrangement of the record series, explain the information contained in the record series descriptions, and indicate restrictions on access to the records.

NONE

1995-03-21T23:59:59.000Z

211

Iodine-131 Releases from Radioactive Lanthanum Processing at the X-10 Site in Oak Ridge, Tennessee (1944-1956)- An Assessment of Quantities released, Off-Site Radiation Doses, and Potential Excess Risks of Thyroid Cancer- APPENDICES Appendices-Volume 1A  

SciTech Connect (OSTI)

This report consists of all the appendices for the report described below: In the early 1990s, concern about the Oak Ridge Reservation's past releases of contaminants to the environment prompted Tennessee's public health officials to pursue an in-depth study of potential off-site health effects at Oak Ridge. This study, the Oak Ridge dose reconstruction, was supported by an agreement between the U.S. Department of Energy (DOE) and the State of Tennessee, and was overseen by a 12-member panel appointed by Tennessee's Commissioner of Health. One of the major contaminants studied in the dose reconstruction was radioactive iodine, which was released to the air by X-10 (now called Oak Ridge National Laboratory) as it processed spent nuclear reactor fuel from 1944 through 1956. The process recovered radioactive lanthanum for use in weapons development. Iodine concentrates in the thyroid gland so health concerns include various diseases of the thyroid, such as thyroid cancer. The large report, ''Iodine-131 Releases from Radioactive Lanthanum Processing at the X-10 Site in Oak Ridge, Tennessee (1944-1956) - An Assessment of Quantities Released, Off-site Radiation Doses, and Potential Excess Risks of Thyroid Cancer,'' is in two volumes. Volume 1 is the main body of the report, and Volume 1A, which has the same title, consists of 22 supporting appendices. Together, these reports serve the following purposes: (1) describe the methodologies used to estimate the amount of iodine-131 (I-131) released; (2) evaluate I-131's pathway from air to vegetation to food to humans; (3) estimate doses received by human thyroids; (4) estimate excess risk of acquiring a thyroid cancer during ones lifetime; and (5) provide equations, examples of historical documents used, and tables of calculated values as appendices. Results indicate that females born in 1952 who consumed milk from a goat pastured a few miles east of X-10 received the highest doses from I-131 and would have had the highest risks of contracting thyroid cancer. Doses from cow's milk are considerably less. Detailed dose and risk estimates, and associated uncertainties, for other contaminants studied in the Oak Ridge dose reconstruction are presented in several other technical reports. One way to easily locate them in OSTI's Information Bridge is by searching the ''report number field'' for the number DOE/OR/21981*. Be sure to place the asterisk after the base number so your search can list the complete series of reports related to Oak Ridge Dose Reconstruction.

Apostoaei, A.I.; Burns, R.E.; Hoffman, F.O.; Ijaz, T.; Lewis, C.J.; Nair, S.K.; Widner, T.E.

1999-07-01T23:59:59.000Z

212

ORIGINAL PAPER Reactivity versus steric effects in fluorinated ketones  

E-Print Network [OSTI]

quantum mechanical computations, which combine gas phase B3LYP calculations with hydration free energies, the development of new CE inhibitors may lead to drugs with therapeutic and/or agrochemical interest [7, 8

Hammock, Bruce D.

213

Fluorinated Compounds DOI: 10.1002/anie.201301097  

E-Print Network [OSTI]

. Traditionally, benzylic fluorides can be prepared by halogen exchange, electrochemical methods was a marked preference for methylene CÃ?H bonds in carbocyclic rings, apparently owing to steric

Groves, John T.

214

Catalytic Asymmetric Fluorination Through an Anionic Phase Transfer Strategy  

E-Print Network [OSTI]

. Reaction Platform and Optimization: Fluorocyclization O O P O O- Na+ iPr iPriPr iPr iPriPr TRIP O O P O OH C8H17 C8H17 iPr iPriPr iPr iPriPr catalyst 1 O NH O 5 mol % catalyst 1.25 equiv. Selectfluor 1

Toste, Dean

215

Fluorinated epoxides 5. Highly selective synthesis of diepoxides from  

E-Print Network [OSTI]

±I (n 2, 3) to allyl acetate that afford the corresponding bis-adducts AcOCH2CHICH2(CF2CF2)nCH2CHI±CH2 of the reaction mixture in additions of per¯uoroalkyl iodides to allyl acetate, that were originally carried out

Cirkva, Vladimir

216

Synthesis and material properties of supramolecules containing fluorinated organomercurials  

E-Print Network [OSTI]

-filling with one orientation of the SiMe3 groups)????????????????????????? 74 IV.5. n-Alkane sorption isotherms for 21 at room temperature?????.. 75 IV.6. Arrangements and conformations of n-butane and n-pentane molecules in the channels of 21 as determined... by molecular mechanics simulations???????????????????????.. 77 IV.7. Benzene and toluene sorption isotherms for 21 at room temperature?. 78 IV.8. Desorption of alkanes under vacuum as a function of time for 21 0.57- ethane, 21 0.67-propane, and 21 0.71-n-butane...

Taylor, Thomas Jackson

2009-05-15T23:59:59.000Z

217

SciTech Connect: Elemental Fluorine-18 Gas: Enhanced Production...  

Office of Scientific and Technical Information (OSTI)

and nuclear medicine initiatives through other federally funded agencies such as NIH and DoD. New reactions involving the use of 18FF2 gas will lead to direct labeling of...

218

Low Temperature Reduction of Alumina Using Fluorine Containing Ionic Liquids  

SciTech Connect (OSTI)

The major objective of the project is to establish the feasibility of using specific ionic liquids capable of sustaining aluminum electrolysis near room temperature at laboratory and batch recirculation scales. It will explore new technologies for aluminum and other valuable metal extraction and process methods. The new technology will overcome many of the limitations associated with high temperatures processes such as high energy consumption and corrosion attack. Furthermore, ionic liquids are non-toxic and could be recycled after purification, thus minimizing extraction reagent losses and environmental pollutant emissions. Ionic liquids are mixture of inorganic and organic salts which are liquid at room temperature and have wide operational temperature range. During the last several years, they were emerging as novel electrolytes for extracting and refining of aluminum metals and/or alloys, which are otherwise impossible using aqueous media. The superior high temperature characteristics and high solvating capabilities of ionic liquids provide a unique solution to high temperature organic solvent problems associated with device internal pressure build-up, corrosion, and thermal stability. However their applications have not yet been fully implemented due to the insufficient understanding of the electrochemical mechanisms involved in processing of aluminum with ionic liquids. Laboratory aluminum electrodeposition in ionic liquids has been investigated in chloride and bis (trifluoromethylsulfonyl) imide based ionic liquids. The electrowinning process yielded current density in the range of 200-500 A/m2, and current efficiency of about 90%. The results indicated that high purity aluminum (>99.99%) can be obtained as cathodic deposits. Cyclic voltammetry and chronoamperometry studies have shown that initial stages of aluminum electrodeposition in ionic liquid electrolyte at 30°C was found to be quasi-reversible, with the charge transfer coefficient (0.40). Nucleation phenomena involved in aluminum deposition on copper in AlCl3-BMIMCl electrolyte was found to be instantaneous followed by diffusion controlled three-dimensional growth of nuclei. Diffusion coefficient (Do) of the electroactive species Al2Cl7¯ ion was in the range from 6.5 to 3.9×10–7 cm2?s–1 at a temperature of 30°C. Relatively little research efforts have been made toward the fundamental understanding and modeling of the species transport and transformation information involved in ionic liquid mixtures, which eventually could lead to quantification of electrochemical properties. Except that experimental work in this aspect usually is time consuming and expensive, certain characteristics of ionic liquids also made barriers for such analyses. Low vapor pressure and high viscosity make them not suitable for atomic absorption spectroscopic measurement. In addition, aluminum electrodeposition in ionic liquid electrolytes are considered to be governed by multi-component mass, heat and charge transport in laminar and turbulent flows that are often multi-phase due to the gas evolution at the electrodes. The kinetics of the electrochemical reactions is in general complex. Furthermore, the mass transfer boundary layer is about one order of magnitude smaller than the thermal and hydrodynamic boundary layer (Re=10,000). Other phenomena that frequently occur are side reactions and temperature or concentration driven natural convection. As a result of this complexity, quantitative knowledge of the local parameters (current densities, ion concentrations, electrical potential, temperature, etc.) is very difficult to obtain. This situation is a serious obstacle for improving the quality of products, efficiency of manufacturing and energy consumption. The gap between laboratory/batch scale processing with global process control and nanoscale deposit surface and materials specifications needs to be bridged. A breakthrough can only be realized if on each scale the occurring phenomena are understood and quantified. Multiscale numerical modeling nevertheless can help t

Dr. R. G. Reddy

2007-09-01T23:59:59.000Z

219

Arylene-fluorinated-sulfonimide ionomers and membranes for fuel cells  

DOE Patents [OSTI]

The preparation of aromatic sulfonimide polymers useful as membranes in electrochemical cells is described.

Teasley, Mark F. (Landenberg, PA)

2011-11-15T23:59:59.000Z

220

Vanadium-Catalyzed C(sp3 )H Fluorination Reactions  

E-Print Network [OSTI]

acquired on an Agilent 6120 Single Quadrupole LC/MS or Agilent 7820A GC/5975 MSD. Materials. Acetonitrile Fluka. Acetonitrile-d3 (D, 99.8%) was purchased from Cambridge Isotope Laboratories, Inc. General acetonitrile (2.0 mL), and the reaction substrate (0.2 mmol, 1.0 equiv). The reaction mixture was degassed

Chen, Chuo

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Fluorinated diamondlike carbon templates for high resolution nanoimprint lithography  

E-Print Network [OSTI]

plasma etching. An antiadhesion coating was provided through fluorocarbon-based plasma treatment, which of the fluorocarbon plasma treatment was also demonstrated in the antiadhesion treatment of the nanoimprint resist of alkyl silanes with fluorocarbon outer tails are widely used,12­16 increasing the hydrophobic properties

Hone, James

222

Fluorinated Arylboron Oxalate for Non-Aqueous Battery Electrolytes - Energy  

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

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

223

Fluorine-Modified Polyaromatic Hydrocarbons for Organic Electronics -  

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

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

224

Energetics of Defects on Graphene through Fluorination. | 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 ProposedUsing Zirconia Nanoparticles asSecond stage ofDefects on Graphene through

225

Methodology for Improved Adhesion for Deposited Fluorinated Transparent  

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 andMapping theEnergyInnovation Portal BiomassUsingData

226

Inexpensive, Nonfluorinated (or Partially Fluorinated) Anions for Lithium  

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

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227

Inexpensive, Nonfluorinated (or Partially Fluorinated) Anions for Lithium  

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:YearRound-UpHeatMulti-Dimensionalthe U.S.Indiana College ProvidesSteamLightingSalts and Ionic

228

Fluorinated Electrolyte for 5-V Li-Ion Chemistry  

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

and evaluation of 10 mAh pouch cells in the lab. - Delivery of twelve 10 mAh pouch cells to DOE for testing and verification. Proposed Future Work 29 PHEV and EV batteries...

229

Positron emission tomographic imaging of tumors using monoclonal antibodies. Progress report, April 15, 1992--October 31, 1992  

SciTech Connect (OSTI)

This research project is developing methods for utilizing positron emission tomography (PET) to increase the clinical potential of radiolabeled monoclonal antibodies (MAbs). This report describes the development of methods for labeling MAbs and their fragments with positron-emitting halogen nuclides, fluorine-18 and iodine-124. These nulides were selected because of the widespread availability of F-18 and because of our extensive experience in the development of new protein radiohalogenation methods.

Zalutsky, M.R.

1992-08-01T23:59:59.000Z

230

Positron emission tomographic imaging of tumors using monoclonal antibodies  

SciTech Connect (OSTI)

This research project is developing methods for utilizing positron emission tomography (PET) to increase the clinical potential of radiolabeled monoclonal antibodies (MAbs). This report describes the development of methods for labeling MAbs and their fragments with positron-emitting halogen nuclides, fluorine-18 and iodine-124. These nulides were selected because of the widespread availability of F-18 and because of our extensive experience in the development of new protein radiohalogenation methods.

Zalutsky, M.R.

1992-08-01T23:59:59.000Z

231

Dry deposition of gaseous elemental iodine on water  

E-Print Network [OSTI]

to receptor is essential in hazard evaluation. These processes include diffusion in the atmosphere and deposition on the earth's surface, followed by translocation through bioenvironmental pathways. All nuclear power plants sre constructed near a large... body of water used for cooling, and, at the present time, all nuclear plants release gaseous radioiodine. As a result, deposition of I2 on surface water is sn additional exposure pathway which must be considered when evaluating the hazard...

Allen, Michael Dana

1974-01-01T23:59:59.000Z

232

Technetium and Iodine Separations in the UREX Process.  

SciTech Connect (OSTI)

The Accelerator Transmutation of Waste (ATW) program is being developed to determine the feasibility of separatin and transmutating the transactinides (Pu-Cm) and long-lived fission product (99Tc and 'I) from spent light water reactor (LWR) fuel. This approach would help with the disposal of spent commercial fuel. In addition, since the residual waste after ATW treatment will have much lower levels of long-lived species, this process may improve the performance and acceptability of long-term geologic disposal of nuclear waste. A roadmap for the Accelerator Transmutation of Waste (ATW) was submitted to Congress in 1999.' This document gave an overall view of the ATW concept and program. A subsequent document prepared by the Technical Working Group for ATW Separations Technologies and Waste Forms issued a second roadmap that dealt more specifically with the radionuclide separations and waste disposal needs for the ATW program.' This latter document discusses the UREX (Uranium Extraction) process. The latest iteration of the UREX flowsheet is shown in Figure le3T his flowsheet anticipates the co-extraction of technetium with uranium from dissolved LWR fuel by tributylphosphate (TBP) and their subsequent sequential bwk-extraction from the TBP stream.

Schroeder, N. C. (Norman C.); Attrep, Moses; Marrero, T. (Thomas)

2001-01-01T23:59:59.000Z

233

The crystal structure of the triphenylphosphine sulfide - iodine addition complex  

E-Print Network [OSTI]

. . 7274 92 ~ 8810 35*3628 33. 6805 16. 7589 25 3752 16 5130 22. 7232 55 ' 4284' 48. 4644 53. 8980 113. 6853 39 0346 ? ? ? -25. 3724 0 0 0 0 0 5 5 5 -5 6 8 8 0 34 2100 17 8600 7 4900 '11 4300 19 5600 36 1436 16 3137 14 ' 1642...

Schweikert, William Walter

1966-01-01T23:59:59.000Z

234

Measurement of the resistivity versus temperature in iodine single crystals  

E-Print Network [OSTI]

Me:. . of: the' aygnreti'up. O'M:~e =', ? brana, rod, - C' ln the- oopper blond, ", E . e-, the-. heater. &&re; . . : ';;;!, :; and 8' 9:e ?tIie danplj mounted Xn the ogIindH. oa1, ~11 of' '. ' the pgaQB 8lfclei 1 , -. 9y p1ac&! the. button...&ge ;kanp1e Pre@erat;ao'n', md. "EgM jument -i'=q=, =';~=' . ' IX~, . ". '. :Keasurcdent . of 'Hes5stk~4y as a Pm'@Mon o5 ';" . -'2sinjsrshure. an/ BeitiiICs; ~. ' j -, ', '-'. v ~ . '- . ? t XTjfe. . . '?Df sonation. of Resnlt'8 ~ ~ ~ ' s ~ ', e...

Somoano, Robert Bonner

2012-06-07T23:59:59.000Z

235

ace iodine project: Topics by E-print Network  

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

Miu, Kevin (Kevin K.) 2006-01-01 210 Ainsi, grace au th eor eme 47, est satisfaisable ssi l'ensemble des abrres a branchement au plus d reconnus par Computer Technologies and...

236

CORRELATION OF FAILURE TIRES FOR IODINE SCC OF ZIRCALOY  

E-Print Network [OSTI]

D. Cllbiocciotti, & Jones, "EPRI - NASA Cooperative P:rojon Corrosion Cracking", EPRI NP-717 (1978). Cubiocciotti,R.L. Jones and Zircaloy", EPRI NP-1329 (19SO). C. Syrett, "

Shann, S.

2013-01-01T23:59:59.000Z

237

Radioactive Iodine and Krypton Control for Nuclear Fuel Reprocessing Facilities  

SciTech Connect (OSTI)

Nuclear fission results in the production of fission products and activation products, some of which tend to be volatile during used fuel reprocessing. These can evolve in volatile species in the reprocessing facility off-gas streams, depending on the separations and reprocessing technologies that are used. Radionuclides that have been identified as “volatile radionuclides” are noble gases (most notably isotopes of Kr and Xe); 3H; 14C; and 129I. Radionuclides that tend to form volatile species that evolve into reprocessing facility off-gas systems are more challenging to efficiently control compared to radionuclides that tend to stay in solid or liquid phases. Future used fuel reprocessing facilities in the United States can require efficient capture of some volatile radionuclides in their off-gas streams to meet regulatory emission requirements. In aqueous reprocessing, these radionuclides are most commonly expected to evolve into off-gas streams in tritiated water [3H2O (T2O) and 3HHO (THO)], radioactive CO2, noble gases, and gaseous HI, I2, or volatile organic iodides. The fate and speciation of these radionuclides from a non-aqueous fuel reprocessing facility is less well known at this time, but active investigations are in progress. An Off-Gas Sigma Team was formed in late FY 2009 to integrate and coordinate the Fuel Cycle Research and Development (FCR&D) activities directed towards the capture and sequestration of the these volatile radionuclides (Jubin 2012a). The Sigma Team concept was envisioned to bring together multidisciplinary teams from across the DOE complex that would work collaboratively to solve the technical challenges and to develop the scientific basis for the capture and immobilization technologies such that the sum of the efforts was greater than the individual parts. The Laboratories currently participating in this effort are Argonne National Laboratory (ANL), Idaho National Laboratory (INL), Oak Ridge National Laboratory (ORNL), Pacific Northwest National Laboratory (PNNL), and Sandia National Laboratories (SNL). This article focuses on control of volatile radionuclides that evolve during aqueous reprocessing of UNF. In particular, most of the work by the Off-gas Sigma Team has focused on the capture and sequestration of 129I and 85Kr, mainly because, as discussed below, control of 129I can require high efficiencies to meet regulatory requirements, and control of 85Kr using cryogenic processing, which has been the technology demonstrated and used commercially to date, can add considerable cost to a reprocessing facility.

Soelberg, Nicolas R. [Idaho National Laboratory, Idaho Falls, ID (United States); Garn, Troy [Idaho National Laboratory, Idaho Falls, ID (United States); Greenhalgh, Mitchell [Idaho National Laboratory, Idaho Falls, ID (United States); Law, Jack [Idaho National Laboratory, Idaho Falls, ID (United States); Jubin, Robert T. [Oak Ridge National Laboratory, Oak Ridge, TN (United States); Strachan, Denis M. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Thallapally, Praveen K. [Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

2013-07-22T23:59:59.000Z

238

The contribution of oceanic methyl iodide to stratospheric iodine  

E-Print Network [OSTI]

horizontal wind speed and vertical transport efficiency (speed Horizontal wind speed and vertical transport CH 3 Ivertical transport. Note that for these two days high www.atmos-chem-phys.net/13/11869/2013/ horizontal wind speeds

2013-01-01T23:59:59.000Z

239

Photoelectron spectroscopy of higher bromine and iodine oxide anions:  

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 TheStevenAdministration AlbumCoulomb repulsion andElectron

240

Iodine-coordinated sulfide leads to an exceptionally stable ceramic  

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 Flows

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Method for the simultaneous preparation of radon-211, xenon-125, xenon-123, astatine-211, iodine-125 and iodine-123  

DOE Patents [OSTI]

The invention relates to a practical method for commercially producing radiopharmaceutical activities and, more particularly, relates to a method for the preparation of about equal amount of Radon-211 (/sup 211/Rn) and Xenon-125 (/sup 125/Xe) including a one-step chemical procedure following an irradiation procedure in which a selected target of Thorium (/sup 232/Th) or Uranium (/sup 238/U) is irradiated. The disclosed method is also effective for the preparation in a one-step chemical procedure of substantially equal amounts of high purity /sup 123/I and /sup 211/At. In one preferred arrangement of the invention almost equal quantities of /sup 211/Rn and /sup 125/Xe are prepared using a onestep chemical procedure in which a suitably irradiated fertile target material, such as thorium-232 or uranium-238, is treated to extract those radionuclides from it. In the same one-step chemical procedure about equal quantities of /sup 211/At and /sup 123/I are prepared and stored for subsequent use. In a modified arrangement of the method of the invention, it is practiced to separate and store about equal amounts of only /sup 211/Rn and /sup 125/Xe, while preventing the extraction or storage of the radionuclides /sup 211/At and /sup 123/I.

Mirzadeh, S.; Lambrecht, R.M.

1985-07-01T23:59:59.000Z

242

Uptake and retention kinetics of para-fluorine-18-fluorobenzylguanidine in isolated rat heart  

SciTech Connect (OSTI)

Para-[{sup 18}F]fluorobenzylguanidine ([{sup 18}F]PFBG) is a newly developed tracer for imaging myocardial sympathetic neuronal innervation. This study investigated the uptake and retention mechanisms of [{sup 18}F]PFBG in perfused, isolated rat heart. 31 refs., 3 figs., 2 tabs.

Berry, C.R.; Garg, P.K.; Zalutsky, M.R. [North Carolina State Univ., Raleigh, NC (United States)]|[Duke Univ. Medical Center, Durham, NC (United States)] [and others

1996-12-01T23:59:59.000Z

243

FLUORINATED HYDROXYTELECHELIC POLYBUTADIENE AS ADDITIVE IN CATIONIC PHOTOPOLYMERIZATION OF AN EPOXY RESIN  

E-Print Network [OSTI]

OF AN EPOXY RESIN B. Ameduri 1 , R. Bongiovanni2 , M. Sangermano2 , A. Priola2 1 Ingénierie et Architectures in original formulations to enable the UV cationic polymerization of a telechelic diepoxy cycloaliphatic resin) values showing a surface modification of the epoxy based system. Indeed, great modifications were noted

Paris-Sud XI, Université de

244

Subcellular boron and fluorine distributions with SIMS ion microscopy in BNCT and cancer research  

SciTech Connect (OSTI)

The development of a secondary ion mass spectrometry (SIMS) based technique of Ion Microscopy in boron neutron capture therapy (BNCT) was the main goal of this project, so that one can study the subcellular location of boron-10 atoms and their partitioning between the normal and cancerous tissue. This information is fundamental for the screening of boronated drugs appropriate for neutron capture therapy of cancer. Our studies at Cornell concentrated mainly on studies of glioblastoma multiforme (GBM). The early years of the grant were dedicated to the development of cryogenic methods and correlative microscopic approaches so that a reliable subcellular analysis of boron-10 atoms can be made with SIMS. In later years SIMS was applied to animal models and human tissues of GBM for studying the efficacy of potential boronated agents in BNCT. Under this grant the SIMS program at Cornell attained a new level of excellence and collaborative SIMS studies were published with leading BNCT researchers in the U.S.

Subhash Chandra

2008-05-30T23:59:59.000Z

245

a-fluorinated ethers thioethers: Topics by E-print Network  

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

Low Band Gap Polymers" Weibin Cui and Fred Wudl Macromolecules, 46 (18): 7232-7238 (2013). DOI Link "A Montarnal, Nancy D. Eisenmenger, Sung-Yu Ku, Michael L....

246

Preparations and characterizations of novel graphite-like materials and some high oxidation state fluorine chemistry  

SciTech Connect (OSTI)

Novel graphite-like materials, BC{sub x} (6>x{ge}3), have been prepared using BCl{sub 3} and C{sub 6}H{sub 6} at 800--1000C, and C{sub x}N (14>x{ge}5) have been synthesized using C{sub 5}H{sub 5}N and Cl{sub 2} at 680C--986C. Bulk and thin film characterization were used to study the structure and bonding in these solids. C{sub 8}K(NH{sub 3}){sub 1.1} was prepared by reacting C{sub 8}K with gaseous NH{sub 3}. The carbon sub-lattice is hexagonal: a = 2.47 {Angstrom}, c = 6.47 {Angstrom}. The smaller a parameter and lower conductivity are attributed to smaller electron transfer from K to the conduction band solvation of K by NH{sub 3}. A simplified liquid phase method for synthesizing Li-graphite intercalation compounds has been developed; synthesis of a lamellar mixed conductor, C{sub x}{sup +}Li{sub 2}N{sup {minus}}, has been attempted. Stability and conductivity of (BN){sub 3}SO{sub 3}F have been studied; it was shown to be metallic with a specific conductivity of 1.5 S{center_dot}cm{sup {minus}1}. Its low conductivity is attributed to the low mobility of holes in BN sheets.

Shen, Ciping

1992-11-01T23:59:59.000Z

247

Fluorination Effects on the Structural Stability and Electronic Properties of sp3  

E-Print Network [OSTI]

the electronic structure of such systems. To this end, experimental and theoretical studies of silicon nanowires (SiNWs) have revealed several factors that may influence the size and character of their band gap. These include the diameter of the SiNW,18-26 its growth orientation,20,23,26,27 cross-sectional shape,28

Hod, Oded

248

Solvation of the Fluorine Containing Anions and Their Lithium Salts in Propylene Carbonate and Dimethoxyethane  

E-Print Network [OSTI]

Electrolyte solutions based on the propylene carbonate (PC)-dimethoxyethane (DME) mixtures are of significant importance and urgency due to emergence of lithium-ion batteries. Solvation and coordination of the lithium cation in these systems have been recently attended in detail. However, analogous information concerning anions (tetrafluoroborate, hexafluorophosphate) is still missed. This work reports PM7-MD simulations (electronic-structure level of description) to include finite-temperature effects on the anion solvation regularities in the PC-DME mixture. The reported result evidences that the anions appear weakly solvated. This observation is linked to the absence of suitable coordination sites in the solvent molecules. In the concentrated electrolyte solutions, both BF4 and PF6 prefer to exist as neutral ion pairs (LiBF4, LiPF6).

Chaban, Vitaly

2015-01-01T23:59:59.000Z

249

Fluorination of incinerator ash by hydrofluorination or ammonium bifluoride fusion for plutonium recovery  

SciTech Connect (OSTI)

Incinerator ash containing small quantities of plutonium has been accumulating across the defense complex for many years. Although the total Pu inventory is small, the ash is a nondiscardable residue which presents storage and accountability difficulties. The work discussed here is the result of a joint exploratory effort between members of Savannah River Laboratory and Los Alamos National Laboratory to compare two proposed pyrochemical pretreatments of incinerator ash prior to aqueous processing. These experiments attempted to determine the relative effectiveness of hydrofluorination and ammonium bifluoride fusion as head-end operations for a two step aqueous recovery method. The two pretreatments are being considered as possible second generation enhancements for the New Special Recovery Facility nearing operation at Savannah River Plant. Experimental results and potential engineering concerns are discussed. 3 figs.

Fink, S.D.; Gray, J.H.; Kent, S.J.; Apgar, S.A.

1989-01-01T23:59:59.000Z

250

Spin-rotation contribution to the relaxation time of the fluorine nuclei in benzotrifluoride  

E-Print Network [OSTI]

Relaxation Times vs. Temperature 2 Viscosity vs. Temperature 3 Reciprocal Relaxation Times vs, Temperature 19 21 34 LIST OF TABLES TABLE PAGE 1 Relaxation Times (Data) 20 2 Viscosity Data 22 3 Densities 23 4 Coupling Constant and Chemical Shift 5... as the sum over-all molecular neighbors, are and (20) J (2m) = g ? r. . 7 (I+4M 7 ) 2 -1 2 15 ij 2 2 j If the molecule is considered to be rigid, then only the anguLar coordinates of the vector joining the i-th nucleus with its 3-th intra- molecular...

Faulk, Robert Hardy

1965-01-01T23:59:59.000Z

251

Non-fluorine precursor solutions for high critical current density REBa?Cu?O??x? films  

E-Print Network [OSTI]

The past two decades have seen advancements in high temperature superconducting cables for use in applications such as electrical transmission lines, propulsion systems, and mobile power generation systems. This work ...

Patta, Yoda Rante

2008-01-01T23:59:59.000Z

252

Dynamic tests for actinide/lanthanide separation by CMPO solvent in fluorinated diluents  

SciTech Connect (OSTI)

Actinide and lanthanide extraction by new solvent: 0.2 M phenyl-octyl-N,N-diiso-butylcarbamoyl-phosphine oxide (CMPO) + 30% TBP + formal of octafluoro-pentanol was studied. A dynamic test with this solvent was performed. It was shown that americium and lanthanides are effectively extracted from PUREX process raffinate. The separation of americium from light lanthanides was confirmed in the modified SETFICS flowsheet with this new solvent. (authors)

Tkachenko, L.; Babain, V.; Alyapyshev, M.; Vizniy, A.; Il'in, A. [V. G. Khlopin Radium Institute, 2nd Murinskiy Ave 28., St. Petersburg 194021 (Russian Federation); Shadrin, A. [A.A. Bochvar High-technology Research Institute of Inorganic Materials, 5-a, Rogova str., Moscow 123098 (Russian Federation)

2013-07-01T23:59:59.000Z

253

Fluorination of "brick and mortar" soft-templated graphitic ordered mesoporous carbons for high  

E-Print Network [OSTI]

compared to standard OMCs, making these ideal candidates for supercapacitor and rechargeable Li-ion battery

Geohegan, David B.

254

Lifetime measurement of metastable fluorine atoms using electron cyclotron resonance plasma source  

SciTech Connect (OSTI)

The authors have measured the lifetime of metastable state (3s {sup 4}P{sub 5/2}) of F atoms by resonant laser-induced fluorescence method. For this experiment, a special 2.45 GHz electron cyclotron resonance (ECR) plasma source, which is highly efficient in F radical generation and free from magnetic field leakage in front of the beam-emitting orifice, has been developed. Using the ECR plasma gun, the authors observed a precision fluorescence spectrum related to 3p {sup 4}D{sub 7/2}{sup 0}(F=4){yields}3s {sup 4}P{sub 5/2}(F=3) transition of F radicals, which made it possible to experimentally determine the longitudinal velocity distribution and the angular spread of the F radical beam. Based on these measured beam characteristics, the authors extracted a true decay curve of fluorescence intensity as a function of distance from the source and determined the lifetime of F metastable state (3s {sup 4}P{sub 5/2}) as 7.3{+-}0.5 {mu}s.

Shimizu, Masao; Ohmi, Hiromasa; Kakiuchi, Hiroaki; Yasutake, Kiyoshi [Yasu Semiconductor Corporation, 686-1 Ichimiyake, Yasu-cho, Yasu-gun, Shiga 520-2632 (Japan); Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 (Japan)

2006-11-15T23:59:59.000Z

255

Fluorinated Nanoparticles: A Novel Technology Platform for Multimodal Biomedical Imaging Applications  

E-Print Network [OSTI]

sizes were measured using small angle neutron scattering and dynamic light scattering, nuclear magnetic resonance signal was measured using 19F NMR, and chemical functional groups were determined using FTIR. Particle size and structure were also examined...

Bailey, Mark Michael

2010-07-26T23:59:59.000Z

256

Fluorinated and hemifluorinated surfactants derived from maltose: Synthesis and application to handling membrane  

E-Print Network [OSTI]

surfactants have been obtained by grafting by radical reaction either a fluorocarbon or an ethyl end-capped fluorocarbon chain onto the double bond of b-DD-allyl maltose. The two compounds thus obtained form

257

Plasma fluorination of carbon-based materials for imprint and molding lithographic applications  

E-Print Network [OSTI]

to a fluorocarbon-based plasma, yielding an ultrathin layer of a fluorocarbon material on the surface which has alkyl silane self-assembled monolayer7­10 SAM with fluorocarbon tails at the outer surface either by im fluorocarbon functional groups provide a low energy to the modified sur- face, with surface energies

Hone, James

258

Fluorine-19 MRI for Visualization and Quantification of Cell Migration in a Diabetes Model  

E-Print Network [OSTI]

are labeled ex vivo with a perfluoropolyether nanoparticle tracer agent and then detected in vivo using 19F

Laidlaw, David

259

Inexpensive, Nonfluorinated (or Partially Fluorinated) Anions for Lithium Salts and Ionic Liquids for Lithium Battery Electrolytes  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

260

Visible Light-Promoted Metal-Free sp3 -CH Fluorination  

E-Print Network [OSTI]

Figure S5. The UV-vis spectrum of cyclopentenone (27) in 2-propanol (50 mM). #12;S6 Figure S6. The UV of the 9 W violet LED bulb used. #12;S12 Figure S12. The emission spectra of the RPR lamps used in Table 1 and visualized by quenching of UV fluorescence (max 254 nm), or by staining ceric ammonium molybdate. 1 H and 13

Chen, Chuo

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


261

E-Print Network 3.0 - a2 peroxidase expression Sample Search...  

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

., Cereghino, G.P.L. & Gold, M.H. (1999) Homologous expression of recombinant lignin peroxidase... of bee venom phos- pholipase A2. Biochemistry 24, ... Source: Youngs,...

262

Amino acid analogs for tumor imaging  

DOE Patents [OSTI]

The invention provides novel amino acid compounds of use in detecting and evaluating brain and body tumors. These compounds combine the advantageous properties of 1-amino-cycloalkyl-1-carboxylic acids, namely, their rapid uptake and prolonged retention in tumors with the properties of halogen substituents, including certain useful halogen isotopes including fluorine-18, iodine-123, iodine-125, iodine-131, bromine-75, bromine-76, bromine-77 and bromine-82. In one aspect, the invention features amino acid compounds that have a high specificity for target sites when administered to a subject in vivo. Preferred amino acid compounds show a target to non-target ratio of at least 5:1, are stable in vivo and substantially localized to target within 1 hour after administration. An especially preferred amino acid compound is [{sup 18}F]-1-amino-3-fluorocyclobutane-1-carboxylic acid (FACBC). In another aspect, the invention features pharmaceutical compositions comprised of an {alpha}-amino acid moiety attached to either a four, five, or a six member carbon-chain ring. In addition, the invention features analogs of {alpha}-aminoisobutyric acid.

Goodman, M.M.; Shoup, T.

1998-10-06T23:59:59.000Z

263

Amino acid analogs for tumor imaging  

DOE Patents [OSTI]

The invention provides novel amino acid compounds of use in detecting and evaluating brain and body tumors. These compounds combine the advantageous properties of 1-amino-cycloalkyl-1-carboxylic acids, namely, their rapid uptake and prolonged retention in tumors with the properties of halogen substituents, including certain useful halogen isotopes including fluorine-18, iodine-123, iodine-125, iodine-131, bromine-75, bromine-76, bromine-77 and bromine-82. In one aspect, the invention features amino acid compounds that have a high specificity for target sites when administered to a subject in vivo. Preferred amino acid compounds show a target to non-target ratio of at least 5:1, are stable in vivo and substantially localized to target within 1 hour after administration. An especially preferred amino acid compound is [{sup 18}F]-1-amino-3-fluorocyclobutane-1-carboxylic acid (FACBC). In another aspect, the invention features pharmaceutical compositions comprised of an {alpha}-amino acid moiety attached to either a four, five, or a six member carbon-chain ring. In addition, the invention features analogs of {alpha}-aminoisobutyric acid.

Goodman, M.M.; Shoup, T.

1998-09-15T23:59:59.000Z

264

Amino acid analogs for tumor imaging  

DOE Patents [OSTI]

The invention provides novel amino acid compounds of use in detecting and evaluating brain and body tumors. These compounds combine the advantageous properties of 1-amino-cycloalkyl-1-carboxylic acids, namely, their rapid uptake and prolonged retention in tumors with the properties of halogen substituents, including certain useful halogen isotopes including fluorine-18, iodine-123, iodine-125, iodine-131, bromine-75, bromine-76, bromine-77 and bromine-82. In one aspect, the invention features amino acid compounds that have a high specificity for target sites when administered to a subject in vivo. Preferred amino acid compounds show a target to non-target ratio of at least 5:1, are stable in vivo and substantially localized to target within 1 hour after administration. An especially preferred amino acid compound is ›.sup.18 F!-1-amino-3-fluorocyclobutane-1-carboxylic acid (FACBC). In another aspect, the invention features pharmaceutical compositions comprised of an .alpha.-amino acid moiety attached to either a four, five, or a six member carbon-chain ring. In addition, the invention features analogs of .alpha.-aminoisobutyric acid.

Goodman, Mark M. (Atlanta, GA); Shoup, Timothy (Decatur, GA)

1998-09-15T23:59:59.000Z

265

Amino acid analogs for tumor imaging  

DOE Patents [OSTI]

The invention provides novel amino acid compounds of use in detecting and evaluating brain and body tumors. These compounds combine the advantageous properties of 1-amino-cycloalkyl-1-carboxylic acids, namely, their rapid uptake and prolonged retention in tumors with the properties of halogen substituents, including certain useful halogen isotopes including fluorine-18, iodine-123, iodine-125, iodine-131, bromine-75, bromine-76, bromine-77 and bromine-82. In one aspect, the invention features amino acid compounds that have a high specificity for target sites when administered to a subject in vivo. Preferred amino acid compounds show a target to non-target ratio of at least 5:1, are stable in vivo and substantially localized to target within 1 hour after administration. An especially preferred amino acid compound is ›.sup.18 F!-1-amino-3-fluorocyclobutane-1-carboxylic acid (FACBC). In another aspect, the invention features pharmaceutical compositions comprised of an .alpha.-amino acid moiety attached to either a four, five, or a six member carbon-chain ring. In addition, the invention features analogs of .alpha.-aminoisobutyric acid.

Goodman, Mark M. (Atlanta, GA); Shoup, Timothy (Decatur, GA)

1998-10-06T23:59:59.000Z

266

Synthesis and study of ligands for Pd-catalyzed C-O and C-N coupling  

E-Print Network [OSTI]

A new ligand, AdBrettPhos, was synthesized and its use, along with tBuBrettPhos, in C-O coupling reactions at low temperatures was investigated. Using Pd catalysts containing these ligands, electron-neutral aryl bromides ...

Davis, Nicole R. (Nicole Rose)

2009-01-01T23:59:59.000Z

267

Molecular modelling and simulation of the surface tension of real quadrupolar fluids  

E-Print Network [OSTI]

Molecular modelling and simulation of the surface tension of fluids with force fields is discussed. 29 real fluids are studied, including nitrogen, oxygen, carbon dioxide, carbon monoxide, fluorine, chlorine, bromine, iodine, ethane, ethylene, acetylene, propyne, propylene, propadiene, carbon disulfide, sulfur hexafluoride, and many refrigerants. The fluids are represented by two-centre Lennard-Jones plus point quadrupole models from the literature. These models were adjusted only to experimental data of the vapour pressure and saturated liquid density so that the results for the surface tension are predictions. The deviations between the predictions and experimental data for the surface tension are of the order of 20 percent. The surface tension is usually overestimated by the models. For further improvements, data on the surface tension can be included in the model development. A suitable strategy for this is multi-criteria optimization based on Pareto sets. This is demonstrated using the model for carbon dioxide as an example.

Stephan Werth; Katrin Stöbener; Peter Klein; Karl-Heinz Küfer; Martin Horsch; Hans Hasse

2014-08-21T23:59:59.000Z

268

Molecular modelling and simulation of the surface tension of real quadrupolar fluids  

E-Print Network [OSTI]

Molecular modelling and simulation of the surface tension of fluids with force fields is discussed. 29 real fluids are studied, including nitrogen, oxygen, carbon dioxide, carbon monoxide, fluorine, chlorine, bromine, iodine, ethane, ethylene, acetylene, propyne, propylene, propadiene, carbon disulfide, sulfur hexafluoride, and many refrigerants. The fluids are represented by two-centre Lennard-Jones plus point quadrupole models from the literature. These models were adjusted only to experimental data of the vapour pressure and saturated liquid density so that the results for the surface tension are predictions. The deviations between the predictions and experimental data for the surface tension are of the order of 20 percent. The surface tension is usually overestimated by the models. For further improvements, data on the surface tension can be included in the model development. A suitable strategy for this is multi-criteria optimization based on Pareto sets. This is demonstrated using the model for carbon d...

Werth, Stephan; Klein, Peter; Küfer, Karl-Heinz; Horsch, Martin; Hasse, Hans

2014-01-01T23:59:59.000Z

269

Method oil shale pollutant sorption/NO.sub.x reburning multi-pollutant control  

DOE Patents [OSTI]

A method of decreasing pollutants produced in a combustion process. The method comprises combusting coal in a combustion chamber to produce at least one pollutant selected from the group consisting of a nitrogen-containing pollutant, sulfuric acid, sulfur trioxide, carbonyl sulfide, carbon disulfide, chlorine, hydroiodic acid, iodine, hydrofluoric acid, fluorine, hydrobromic acid, bromine, phosphoric acid, phosphorous pentaoxide, elemental mercury, and mercuric chloride. Oil shale particles are introduced into the combustion chamber and are combusted to produce sorbent particulates and a reductant. The at least one pollutant is contacted with at least one of the sorbent particulates and the reductant to decrease an amount of the at least one pollutant in the combustion chamber. The reductant may chemically reduce the at least one pollutant to a benign species. The sorbent particulates may adsorb or absorb the at least one pollutant. A combustion chamber that produces decreased pollutants in a combustion process is also disclosed.

Boardman, Richard D. (Idaho Falls, ID); Carrington, Robert A. (Idaho Falls, ID)

2008-06-10T23:59:59.000Z

270

Heterometallic Ln/Hg Compounds with Fluorinated Thiolate Ligands Santanu Banerjee, Thomas J. Emge, and John G. Brennan*  

E-Print Network [OSTI]

-15699. (b) Rodriguez-Cortinas, R.; Avecilla, F.; Platas-Iglesias, C.; Imbert, D.; Buenzli, J.; de Blas, A.; Rodriguez-Blas, T. Inorg. Chem. 2002, 41, 5336-5349. (c) Buenzli, J. G.; Piguet, C. Chem. ReV. 2002, 102.; Qian, Y.-T.; Huang, J.-S. Polyhedron 2001, 20, 1795-1802. (2) (a) James, C.; Willand, P. S. J. Am. Chem

Lawson, Catherine L.

271

Method of determining the extent to which a nickel structure has been attached by a fluorine-containing gas  

DOE Patents [OSTI]

The method of determining the extent to which a nickel structure has been attacked by a halogen containing gas to which it has been exposed which comprises preparing a quantity of water substantially free from dissolved oxygen, passing ammonia gas through a cuprammonium solution to produce ammonia substantially free from oxygen, dissolving said oxygen-free ammonia in said water to produce a saturated aqueous ammonia solution free from uncombined oxygen, treating at least a portion of said nickel structure of predetermined weight with said solution to dissolve nickel compounds from the surface of said structure without dissolving an appreciable amount of said nickel and analyzing the resulting solution to determine the quantity of said nickel compounds that was associated with said said portion of said structure to determine the proportion of combined nickel in said nickel structure.

Brusie, James P. (Oak Ridge, TN)

2004-07-13T23:59:59.000Z

272

Trivalent Lanthanide Compounds with Fluorinated Thiolate Ligands: Ln-F Dative Interactions Vary with Ln and Solvent  

E-Print Network [OSTI]

compounds containing flu- orinated ligands that have been investigated for potential CVD applications,1. Coordination of organofluoride ligands to metal ions is an unusual phenomenon.4 Because of the weak, highly ionic nature of the M-F dative interaction, less electropositive metals (i.e., Hg, Pt) do not tend

Lawson, Catherine L.

273

RAPID COMMUNICATIONS IN MASS SPECTROMETRY, VOL. 7, 693-699 (1993) Collisions of C&*and Cii at Fluorinated and  

E-Print Network [OSTI]

energy is relatively high, typically 12-15% for small molecules.' Thus, if the efficiency of energy & Sons, Ltd. (e.g. masses areater than 200u) strike surfaces." The high relative energy transferRAPID COMMUNICATIONS IN MASS SPECTROMETRY, VOL. 7, 693-699 (1993) Collisions of C&*and Cii

Wysocki, Vicki H.

274

Method of Determining the Extent to which a Nickel Structure has been Attached by a Fluorine-Containing Gas  

DOE Patents [OSTI]

The method of determining the extent to which a nickel structure has been attacked by a halogen containing gas to which it has been exposed which comprises preparing a quantity of water substantially free from dissolved oxygen, passing ammonia gas through a cuprammonium solution to produce ammonia substantially free from oxygen, dissolving said oxygen-free ammonia in said water to produce a saturated aqueous ammonia solution free from uncombined oxygen, treating at least a portion of said nickel structure of predetermined weight with said solution to dissolve nickel compounds from the surface of said structure without dissolving an appreciable amount of said nickel and analyzing the resulting solution to determine the quantity of said nickel compounds that was associated with said said portion of said structure to determine the proportion of combined nickel in said nickel structure.

Brusie, James P.

2004-07-13T23:59:59.000Z

275

The effect of silica gel sampling tube design on the analytical recovery of fluorine ions / by Daniel Howard Anna  

E-Print Network [OSTI]

concentrations of hydrofluoric acid. The statically generated concentrations ranged from 0. 5 to 2. 5 times the TLV. The first type of hand packed tube used foam, rather than glass wool, to hold the silica gel in place. The other type had silica gel sections... and the analyzed concentrations showed that the tubes were not statistically different at the 95% confidence level. ACKNOWLEDGMENT I would like to thank the members of my committee, Richard B. Konzen, Ph. D. , John P. Wagner, Ph. D. and Calvin B. Parnell, Ph. D...

Anna, Daniel Howard

1991-01-01T23:59:59.000Z

276

Oxidative Coupling of ortho-Aminophenols and Anilines for the Application of Labeling Proteins with Fluorine-18  

E-Print Network [OSTI]

was dissolved in acetonitrile at a high concentration thenseparate portions of acetonitrile (2 mL each) and then addedwere dissolved in acetonitrile (0.2 mL) and then diluted

Behrens, Christopher Richard

2012-01-01T23:59:59.000Z

277

Helix Propensity of Highly Fluorinated Amino Acids Hsien-Po Chiu, Yuta Suzuki, Donald Gullickson, Raheel Ahmad, Bashkim Kokona,  

E-Print Network [OSTI]

with fluorocarbon residues is referred to as the fluoro-stabilization effect.1-7 In particular, replacing leucine been attributed to the higher hydrophobicity of the fluorocarbon side chain compared

Fairman, Robert

278

Characterization of an iodine-based ionic liquid ion source and studies on ion fragmentation  

E-Print Network [OSTI]

Electrosprays are a well studied source of charged droplets and ions. A specific subclass is the ionic liquid ion source (ILIS), which produce ion beams from the electrostatically stressed meniscus of ionic liquids. ILIS ...

Fedkiw, Timothy Peter

2010-01-01T23:59:59.000Z

279

Resistivity of low percentage perylene to iodine complexes and their excess noise spectra  

E-Print Network [OSTI]

that pressed prlycrystalline samples and single crystals should yield the same activation energy. & However others have ~btained activation energies nf 1 to 1 . 5 ev i'nr single crystal s. 9 & 3 L511er reports a rapid droop in activation energy from 0. 7... 0. 60 0. 34 0. 13 0. 35 0. 24 Extrinsic 0, 034 0. 034 0. 056 0, 059 (oZ) 240 250 288 Int. 10 3 10 4 0. 2 50 0. 2 106 10 104 10 Table 1. Information Cbtained from Figures e through P, 16 decreasing the gap between them...

Caruthers, Jerald Wayne

1966-01-01T23:59:59.000Z

280

On the mobility and potential retention of iodine in the Callovovian-Oxfordian formation  

E-Print Network [OSTI]

manuscript, published in "Physics and Chemistry of the Earth Parts A/B/C 32 (2007) 539-551" DOI : 10.1016/j.pce organic matter of the sediment before and during deposition, and early diagenesis. At variance with total diffusion on similar rock materials have already shown that iodide does not behave like chloride

Paris-Sud XI, Université de

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


281

IODINE IN THE ENVIRONMENT REVISITED. AN EVALUATION OF THE CHEMICAL-AND PHYSICO CHEMICAL  

E-Print Network [OSTI]

107 years) has received considerable attention as a byproduct of nuclear energy production. 129 I released to the environment, e.g. by nuclear accidents may be accumulated in the thyroid gland

282

Volatility literature of chlorine, iodine, cesium, strontium, technetium, and rhenium; technetium and rhenium volatility testing  

SciTech Connect (OSTI)

A literature review pertaining to the volatilization of Sr, Cs, Tc (and its surrogate Re), Cl, I and other related species during the vitrification of Hanford Low Level Waste (LLW) streams has been performed and the relevant information summarized. For many of these species, the chemistry which occurs in solution prior to the waste stream entering the melter is important in dictating their loss at higher temperatures. In addition, the interactive effects between the species being lost was found to be important. A review of the chemistries of Tc and Re was also performed. It was suggested that Re would indeed act as an excellent surrogate for Tc in non-radioactive materials testing. Experimental results on Tc and Re loss from sodium aluminoborosilicate melts of temperatures ranging from 900--1350{degrees}C performed at PNL are reported and confirm that Re behaves in a nearly identical manner to that of technetium.

Langowski, M.H.; Darab, J.G.; Smith, P.A.

1996-03-01T23:59:59.000Z

283

Performance of a Multistream Injection Chemical OxygenIodine Laser with Starlet Ejectors  

E-Print Network [OSTI]

and has the potential for higher pressure recovery. Pressures in the singlet-oxygen generator were technology development to date has focused on the singlet-oxygen generator (SOG). The liquid SOG technology- oxygen generation and transport efficiency. The idea of the starlet nozzle concept stems originally from

Carroll, David L.

284

A Model of Radioiodine Transfer to Goat Milk Incorporating the Influence of Stable Iodine  

E-Print Network [OSTI]

nuclear accidents such as those at Windscale (1957) and Chernobyl (1986). An important route by which

Crout, Neil

285

Hyperfine predissociation in the B state of iodine investigated through lifetime measurements of individual hyperfine sublevels  

E-Print Network [OSTI]

. - The dynamics of molecular excited states is an important chapter of present-day molecular physics from the level under investigation following a pulsed excitation of this level. Our laser-excited

Boyer, Edmond

286

Relationship of the serum protein-bound iodine to rates of gain in beef cattle  

E-Print Network [OSTI]

to03 Go ?H -P CO HOI PQ Hto01 oto H O to rH O CD... tOO to02to o o Oi01to ?00101 ?01 to H rH 05 O 01 01 to rH tO rH O ? 00toe'? en 00 01*0001to 001 01 ao 05 01 !>?> tOa> 01lO #oto!> IDtoo 01* 00to rH 01 COo ? ID H oo> 0> 05 c?to GO Hto...

Stokes, David Kershaw

1956-01-01T23:59:59.000Z

287

Earth Planets Space, 54, 265273, 2002 Iodine isotope ratios and halide concentrations in fluids  

E-Print Network [OSTI]

is best preserved in the high-temperature fumaroles collected in 1998 and has a 129 I/I ratio of 756 ± 47 recent meteoric water from the fumarolic system after 1993. The acid hot springs on the flanks by mixing with old meteoric water and seawater. Fumarolic gases and hot spring waters were also analyzed

Fehn, Udo

288

Space-charge-limited current measurements in iodine crystals by pulse techniques  

E-Print Network [OSTI]

to x = d. using the con- ditions: ae E(0 ~ t) 0 Q t-0 pd b. ) E dx = V = constant 0 c. Q~(x, t) = 0 &x one obtains 2 ](d. t) = a~ E (d. t) 'Sw d Now at x = d, before the leading front of the carriers arrives, p(d. t) = 0 , t&ti so that Jc... = 0 at x = d for t ti (the transit time of the carriers). This implies that dE = 0 o t&ti 'bxx=d Therefore we see from E&Ls. (3) and (0) that hE(d, t) = 8E (d. , t) ~ t&ti st 2d (5) A solution to Eq. (5) is E=V 1 d ~oct with ~= 1 and. t = d...

Robinette, William Clayton

2012-06-07T23:59:59.000Z

289

Carrier envelope phase stabilization of a femtosecond laser and iodine spectroscopy  

E-Print Network [OSTI]

. In this context, the CW stability of the Ti:sapphire laser is discussed to provide a procedure for the femtosecond laser adjustments. In addition, the pulse trains emitted by the femtosecond laser are described analytically to provide a theoretical basis...

Zhu, Feng

2006-10-30T23:59:59.000Z

290

Interfacing the tandem mirror reactor to the sulfur-iodine process for hydrogen production  

SciTech Connect (OSTI)

The blanket is linked to the H/sub 2/SO/sub 4/ vaporization units and SO/sub 3/ decomposition reactor with either sodium or helium. The engineering and safety problems associated with these choices are discussed. This H/sub 2/SO/sub 4/ step uses about 90% of the TMR heat and is best close-coupled to the nuclear island. The rest of the process we propose to be driven by steam and does not require close-coupling. The sodium loop coupling seems to be preferable at this time. We can operate with a blanket around 1200 K and the SO/sub 3/ decomposer around 1050 K. This configuration offers double-barrier protection between Li-Na and the SO/sub 3/ process gases. Heat pipes offer an attractive alternate to provide an additional barrier, added modularity for increased reliability, and tritium concentration and isolation operations with very little thermal penalty.

Galloway, T.R.

1980-06-02T23:59:59.000Z

291

Capture of Solar and Higher-Energy Neutrinos by Iodine 127  

E-Print Network [OSTI]

We discuss and improve a recent treatment of the absorption of solar neutrinos by ${}^{127}$I, in connection with a proposed solar neutrino detector. With standard-solar-model fluxes and an in-medium value of -1.0 for the axial-vector coupling constant $g_A$, we obtain a ${}^8$B-neutrino cross section of 3.3$\\times 10^{-42}$, about 50\\% larger than in our previous work, and a ${}^7$Be cross section that is less certain but nevertheless also larger than before. We then apply the improved techniques to higher incoming energies that obtain at the LAMPF beam dump, where an experiment is underway to finalize a calibration of the ${}^{127}$I with electron neutrinos from muon decay. We find that forbidden operators, which play no role in solar-neutrino absorption, contribute nonnegligibly to the LAMPF cross section, and that the preliminary LAMPF mean value is significantly larger than our prediction.

J. Engel; S. Pittel; P. Vogel

1994-02-17T23:59:59.000Z

292

Impact of Foliar Fertilizer Containing Iodine on “Golden Delicious” Apple Trees  

E-Print Network [OSTI]

on marketable Golden Delicious/M.9 apple production. At thecontaining fertilizer on apple fruits firmness and theirold “Golden Delicious/M.9” apple trees Trees were spaced at

Szwonek, Eugeniusz

2009-01-01T23:59:59.000Z

293

Iodine in groundwater of the North China Plain: Spatial patterns and hydrogeochemical processes of enrichment  

E-Print Network [OSTI]

of enrichment Eryong Zhang a,b, , Yanyan Wang c , Yong Qian d , Teng Ma c , Dongxiao Zhang a , Hongbin Zhan e

Zhan, Hongbin

294

Resistivity measurements of iodine single crystals by an A.C. technique  

E-Print Network [OSTI]

are organic semi- conductors. Inokuchi and Akamatu and Garrett have investigated the electrical properties of several of these semiconductors and have also summarized the re- suits of much of the work that has been done on these materials up to 1961. Be... as the resistance increases, the accuracy is better than 10% in the resistance range of 10 ohms with a capacitance of 10 pF across the sample. If the capacitance is decreased by trimming the bridge before electrodes are con- nected to the sample to rule out all...

Intararithi, Thanom

1965-01-01T23:59:59.000Z

295

SciTech Connect: Assessment of Methods to Consolidate Iodine-Loaded  

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 Administrationcontroller systems controllerAdditive ManufacturingSilver-Functionalized Silica

296

SciTech Connect: Efforts to Consolidate Chalcogels with Adsorbed Iodine  

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 Administrationcontroller systems controllerAdditiveBetatronAerogelDistancesCaptureiron

297

Zeolite Salt Occlusion: A Potential Route for the Immobilisation of Iodine-129? Neil C. Hyatt,1*  

E-Print Network [OSTI]

in air, at 500o C, with the sodium forms of the zeolites leads to the formation of occlusion products, Sheffield, S1 3JD. UK. 2 School of Chemical Sciences, The University of Birmingham, Birmingham, B15 2TT. UK have been used to monitor the occlusion reaction at 400o C, and show that the occlusion product

Sheffield, University of

298

Iodine solubility in a low-activity waste borosilicate glass at 1000°C  

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-SeriesFlickrinformation for and ApplicationNuclearLeaoInvestingsolubility in a

299

Iodine valence and local environments in borosilicate waste glasses using X-ray absorption spectroscopy  

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-SeriesFlickrinformation for and ApplicationNuclearLeaoInvestingsolubility in

300

Tritium And Iodine Plumes on the U.S. Department of Energy Hanford Site  

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 NbS2TopoPortalBRDF Effects in Satellite Retrieval ofMay

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Tritium And Iodine Plumes on the U.S. Department of Energy Hanford Site  

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 NbS2TopoPortalBRDF Effects in Satellite Retrieval

302

Direct vapor/solid synthesis of mercuric iodide using compounds of mercury and iodine  

SciTech Connect (OSTI)

A process is disclosed for producing high purity mercuric iodide by passing a gaseous source of a mercuric compound through a particulate bed of a low vapor pressure iodide compound which is maintained at an elevated temperature which is the lower of either: (a) just below the melting or volatilization temperature of the iodide compound (which ever is lower); or (b) just below the volatilization point of the other reaction product formed during the reaction; to cause the mercuric compound to react with the iodide compound to form mercuric iodide which then passes as a vapor out of the bed into a cooler condensation region.

Skinner, Nathan L. (Carpinteria, CA)

1990-01-01T23:59:59.000Z

303

Novel Chemical Strategies for Labeling Small Molecule Ligands for Androgen, Progestin, and Peroxisome Proliferator-Activated Receptors for Imaging Prostate and Breast Cancer and the Heart  

SciTech Connect (OSTI)

Summary of Progress The specific aims of this project can be summarized as follows: • Aim 1: Prepare and evaluate radiolabeled ligands for the peroxisome proliferator-activated receptor ? (PPAR?), a new nuclear hormone receptor target for tumor imaging and hormone therapy. • Aim 2: Prepare steroids labeled with a cyclopentadienyl tricarbonyl technetium or rhenium unit. • Aim 3: Prepare and evaluate other organometallic systems of novel design as ligand mimics and halogenated ligands for nuclear hormone receptor-based tumor imaging. As is described in detail below, we made excellent progress on all three of these aims; the highlights of our progress are the following: • we have prepared the first fluorine-18 labeled analogs of ligands for the PPAR? receptor and used these in tissue distribution studies in rats • we have developed three new methods for the synthesis of cyclopentadienyltricarbonyl rhenium and technetium (CpRe(CO)3 and CpTc(CO)3) systems and we have adapted these to the synthesis of steroids labeled with these metals, as well as ligands for other receptor systems • we have prepared a number of fluorine-18 labeled steroidal and non-steroidal androgens and measured their tissue distribution in rats • we have prepared iodine and bromine-labeled progestins with high progesterone receptor binding affinity • we have prepared inorganic metal tricarbonyl complexes and steroid receptor ligands in which the metal tricarbonyl unit is an integral part off the ligand core.

Katzenellenbogen, John, A.

2007-04-19T23:59:59.000Z

304

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS 243, 664668 (1998) ARTICLE NO. RC988151  

E-Print Network [OSTI]

) particles from potato tuber. N-terminal se-between F1 and Fo and regulate energy coupling in quences characterised protein phos- Mitochondria were isolated and purified from potato tubers (Sola- phorylation

Allen, John F.

305

J. Sep. Sci. 2005, 28, 155162 www.jss-journal.de i 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim OriginalPaper  

E-Print Network [OSTI]

[bis(pyridin-2-ylmethyl)amino]propan-2-olato dizinc(II) complex (Phos-tag), which is linked to a highly cross of pro- teins, such as phosphorylation, glycosylation, methyla- tion, and acetylation, dramatically

Lebendiker, Mario

306

Novel 125 I production and recovery system  

E-Print Network [OSTI]

This research suggests ways of reducing contamination of iodine-126 in iodine-125 and lays out a simpler iodine-125 production technique to increase the yield. By using aluminum irradiation vessels the yield of iodine-125 produced by neutron...

Kar, Adwitiya

2009-05-15T23:59:59.000Z

307

annealing temperature effects: Topics by E-print Network  

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

University of 10 Paper The Effect of High Temperature Annealing on Fluorine Distribution Profile and Electro-Physical Properties of Thin Gate Oxide Fluorinated by Silicon...

308

annealing temperature effect: Topics by E-print Network  

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

University of 10 Paper The Effect of High Temperature Annealing on Fluorine Distribution Profile and Electro-Physical Properties of Thin Gate Oxide Fluorinated by Silicon...

309

Synthesis and use of (polyfluoroaryl)fluoroanions of aluminum, gallium and indium  

DOE Patents [OSTI]

Salts of (polyfluoroaryl)fluoroanions of aluminum, gallium, and indium are described. The (polyfluoroaryl)fluoroanions have the formula [ER'R"R'"F].sup..crclbar. wherein E is aluminum, gallium, or indium, wherein F is fluorine, and wherein R', R", and R'" is each a fluorinated phenyl, fluorinated biphenyl, or fluorinated polycyclic group.

Marks, Tobin J. (Evanston, IL); Chen, You-Xian (Midland, MI)

2000-01-01T23:59:59.000Z

310

The Transuranium Elements  

E-Print Network [OSTI]

uranium hexa- fluoride, can be made by the reaction of pure gaseous fluorine on plutonium tetrafluoride

Hyde, Earl K.; Seaborg, Glenn T.

1956-01-01T23:59:59.000Z

311

Phenyl boron-based compounds as anion receptors for non-aqueous battery electrolytes  

DOE Patents [OSTI]

Novel fluorinated boronate-based compounds which act as anion receptors in non-aqueous battery electrolytes are provided. When added to non-aqueous battery electrolytes, the fluorinated boronate-based compounds of the invention enhance ionic conductivity and cation transference number of non-aqueous electrolytes. The fluorinated boronate-based anion receptors include different fluorinated alkyl and aryl groups.

Lee, Hung Sui (East Setauket, NY); Yang, Xiao-Qing (Port Jefferson Station, NY); McBreen, James (Bellport, NY); Sun, Xuehui (Middle Island, NY)

2002-01-01T23:59:59.000Z

312

Iodine Pathways and Off-Gas Stream Characteristics for Aqueous Reprocessing Plants – A Literature Survey and Assessment  

SciTech Connect (OSTI)

Used nuclear fuel is currently being reprocessed in only a few countries, notably France, England, Japan, and Russia. The need to control emissions of the gaseous radionuclides to the air during nuclear fuel reprocessing has already been reported for the entire plant. But since the gaseous radionuclides can partition to various different reprocessing off-gas streams, for example, from the head end, dissolver, vessel, cell, and melter, an understanding of each of these streams is critical. These off-gas streams have different flow rates and compositions and could have different gaseous radionuclide control requirements, depending on how the gaseous radionuclides partition. This report reviews the available literature to summarize specific engineering data on the flow rates, forms of the volatile radionuclides in off-gas streams, distributions of these radionuclides in these streams, and temperatures of these streams. This document contains an extensive bibliography of the information contained in the open literature.

R. T. Jubin; D. M. Strachan; N. R. Soelberg

2013-09-01T23:59:59.000Z

313

Urinary Metabolomic Analysis to Detect Changes After Intravenous, Non-ionic, Low Osmolar Iodinated Radiocontrast for Computerized Tomographic Imaging  

E-Print Network [OSTI]

Acad Radiol. after percutaneous coronary intervention and adialysis after percutaneous coronary intervention and theafter percutaneous coronary intervention: development and

Diercks, Deborah B; Owen, Kelly P; Tolstikov, Vladimir; Sutter, Mark E; Kline, Jeffrey A

2014-01-01T23:59:59.000Z

314

129 Iodine: A New Hydrologic Tracer for Aquifer Recharge Conditions Influenced by River Flow Rate and Evapotranspiration  

E-Print Network [OSTI]

analogy to chloride ? Long term database Chloride: Analogy for Iodide y = 5.27x -0.32 R 2 = 0.53 R = 0.73 0 1 2 3 4 5 6 0 20 40 60 80 100 120 SARPD Monthly Flow m 3 s -1 S ARP D [ C l - ] m e q / L Monthly values INSET: Annual median values.... GW y = 0.46x + 1.27 R 2 = 0.96 -2 -1 0 1 2 -3 -2 -1 0 log [Cl - GW ] or log [Cl - SARPD ] meq/L lo g [ C l - PP T ] m e q/ L ...

Schwehr, K. A.; Santschi, P. H.; Moran, J. E.

2003-01-01T23:59:59.000Z

315

The level of serum protein-bound iodine, its repeatability and relationship to rate of gain in immature beef cattle  

E-Print Network [OSTI]

H? sxdJx0 to increase .in. humans ?=xowx,fww et alG O 1948) and baboons (van Zyla 1957) o Ne differences were observed in the thyroid activity of pregnant and non-pregnant ewes ?Klwdlx and Turner 3 1946; Kenneman xt f'i w 1955). Wux results lm... ;ugsol'l$okf' 'xJx'si bfs Hx,f0 hl f ;dlhxow bohu fw x'xkhdl;uldxhok x y o ' o h g so,o'fd hl hufh lm hux k?3? fw0 $'lH*'ow mdfkholws ow u*,fw sxdf) 4uxw $dxfhxd 'xJx's bxdx f00x0i hux 'fHx'x0 hugdlyowx bfs Hl*w0 hl f sxklw0 mdfkholw bohu fw x...

Green, George G.

1958-01-01T23:59:59.000Z

316

Iodine-125-labeled lipoprotein lipase as a tool to detect and study spontaneous lipolysis in bovine milk  

SciTech Connect (OSTI)

The distribution of lipoprotein lipase among cream, casein, and milk serum can be evaluated by addition of a trace amount of /sup 125/I-labeled lipoprotein lipase to milk. Radioactive lipase was distributed in parallel to endogenous lipase under several conditions. In some milk samples, binding of lipase to cream increased when the milk was cooled. Correlation was good between bound labeled lipase and degree of cold-induced lipolysis in corresponding milk samples. Binding of lipase to cream or to casein was not saturable by addition of two-to threefold more lipase than is normally present in milk. In milk with a relatively high fraction of lipase bound to cream, a correspondingly lower fraction was associated with casein, whereas the fraction of lipase in milk serum was similar in all milk samples. Cold-induced binding of lipoprotein lipase to cream was not fully reversed when the milk was warmed again. Heparin released lipase from casein and increased the amount of lipase bound to cream after cooling.

Sundheim, G.; Bengtsson-Olivecrona, G.

1986-07-01T23:59:59.000Z

317

Absolute frequency measurement of the iodine-stabilized Ar+ at 514.6 nm using a femtosecond optical frequency comb.  

E-Print Network [OSTI]

Hz higher than the value of 582490603.38(15) MHz, adopted by the CIPM in 2003 [T.J. Quinn, Metrologia 40

Boyer, Edmond

318

Ligands for SPECT and PET imaging of muscarinic-cholinergic receptors of the heart and brain  

SciTech Connect (OSTI)

Interest in the potential use of cerebral SPECT and PET imaging for determination of the density and activity of muscarinic-cholinergic receptors (mAChR) has been stimulated by the changes in these receptors which occur in many neurological diseases. In addition, the important involvement of mAChR in modulating negative inotropic cardiac activity suggests that such receptor ligands may have important applications in evaluation of changes which may occur in cardiac disease. In this paper, the properties of several key muscarinic receptor ligands being developed or which have been used for clinical SPECT and PET are discussed. In addition, the ORNL development of the new iodinated IQNP ligand based on QNB and the results of in vivo biodistribution studies in rats, in vitro competitive binding studies and ex vivo autoradiographic experiments are described. The use of radioiodinated IQNP may offer several advantages in comparison to IQNB because of its easy and high yield preparation and high brain uptake and the potential usefulness of the {open_quotes}partial{close_quotes} subtype selective IONP isomers. We also describe the development of new IQNP-type analogues which offer the opportunity for radiolabeling with positron-emitting radioisotopes (carbon-11, fluorine-18 and bromine-76) for potential use with PET.

Knapp, F.F. Jr.; McPherson, D.W.; Luo, H. [and others

1995-06-01T23:59:59.000Z

319

Photofragmentation spectra of halogenated methanes in the VUV photon energy range  

SciTech Connect (OSTI)

In this paper an investigation of the photofragmentation of dihalomethanes CH{sub 2}X{sub 2} (X = F, Cl, Br, I) and chlorinated methanes (CH{sub n}Cl{sub 4?n} with n = 0–3) with VUV helium, neon, and argon discharge lamps is reported and the role played by the different halogen atoms is discussed. Halogenated methanes are a class of molecules used in several fields of chemistry and the study of their physical and chemical proprieties is of fundamental interest. In particular their photodissociation and photoionization are of great importance since the decomposition of these compounds in the atmosphere strongly affects the environment. The results of the present work show that the halogen-loss is the predominant fragmentation channel for these molecules in the VUV photon energy range and confirm their role as reservoir of chlorine, bromine, and iodine atoms in the atmosphere. Moreover, the results highlight the peculiar feature of CH{sub 2}F{sub 2} as a source of both fluorine and hydrogen atoms and the characteristic formation of I{sub 2}{sup +} and CH{sub 2}{sup +} ions from the photofragmentation of the CH{sub 2}I{sub 2} molecule.

Cartoni, Antonella, E-mail: antonella.cartoni@uniroma1.it [Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le Aldo Moro 5, Roma 00185 (Italy)] [Dipartimento di Chimica e Tecnologie del Farmaco, Sapienza Università di Roma, P.le Aldo Moro 5, Roma 00185 (Italy); Bolognesi, Paola; Fainelli, Ettore; Avaldi, Lorenzo [CNR-IMIP, Area della Ricerca di Roma 1, Monterotondo Scalo (Rm) 00015 (Italy)] [CNR-IMIP, Area della Ricerca di Roma 1, Monterotondo Scalo (Rm) 00015 (Italy)

2014-05-14T23:59:59.000Z

320

Final Report for "Boron and Tin in Nuclear Medicien: The Development of Reactive Solid-State Reagents for PET and SPECT  

SciTech Connect (OSTI)

The research program was directed at the use of functionalized organometallic reagents that would rapidly react with radiolabeled agents generated by a medical cyclotron or reactor. The radioisotopes included fluorine-18, oxgygen-15, nitrogen-13, carbon-11 and iodine-123; all short lived nuclides of importantce in nuclear medicine imaging studies utilizing emission tomography techniques. The early studies led to the development of extensive new isotope incorporation chemistry. These studies validated the feasibility of using reactive intermediates, such as the organoboranes, and acted as a catalyst for others to investigate organometallic agents based on mercury, tin, and silicon. A large number of radiolabeling techniques and radiopharmaceuticals were developed. These included agents for use in oncology, neurology, and metabolism. The research resulted in the generation of one hundred and one journal articles, eighty seven refereed published abstracts and forty one invited lectures. Thirteen postdoctoral students, fourteen graduate students, and twenty eight undergraduate students were trained in the scientific aspects of nuclear medicine imaging under the asupices of this grant.

George W. Kabalka

2006-01-13T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Excitonic effects in oxyhalide scintillating host compounds  

SciTech Connect (OSTI)

Ab-initio calculations based on density functional theory have been performed to study the electronic, optical, mechanical, and vibrational properties of scintillator host compounds YOX (X?=?F, Cl, Br, and I). Semiempirical dispersion correction schemes are used to find the effect of van der Waals forces on these layered compounds and we found this effect to be negligible except for YOBr. Calculations of phonons and elastic constants showed that all the compounds studied here are both dynamically and mechanically stable. YOF and YOI are found to be indirect band gap insulators while YOCl and YOBr are direct band gap insulators. The band gap is found to decrease as we move from fluorine to iodine, while the calculated refractive index shows the opposite trend. As the band gap decreases on going down the periodic table from YOF to YOI, the luminescence increases. The excitonic binding energy calculated, within the effective mass approximation, is found to be more for YOF than the remaining compounds, suggesting that the excitonic effect to be more in YOF than the other compounds. The optical properties are calculated within the Time-Dependent Density Functional Theory (TDDFT) and compared with results obtained within the random phase approximation. The TDDFT calculations, using the newly developed bootstrap exchange-correlation kernel, showed significant excitonic effects in all the compounds studied here.

Shwetha, G.; Kanchana, V., E-mail: kanchana@iith.ac.in [Department of Physics, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram 502 205, Telangana (India); Valsakumar, M. C. [School of Engineering Sciences and Technology (SEST), University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046, Telangana (India)

2014-10-07T23:59:59.000Z

322

CX-012554: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Electrochemical Fluorination in Molten Fluoride Salts and Detection of Fluorinated Species CX(s) Applied: B3.6Date: 41879 Location(s): South CarolinaOffices(s): Savannah River Operations Office

323

Development of novel transition metal-catalyzed cross-coupling reactions and applications thereof  

E-Print Network [OSTI]

Chapter 1 The first example of Pd(0)/(II) catalyzed fluorination of aryl bromides is reported herein. Based on these data, an analogous method was developed for the fluorination of aryl triflates. The reaction proceeds ...

Teverovskiy, Georgiy

2013-01-01T23:59:59.000Z

324

First-principles studies of carbon nanostructures and spin-phonon and electron-phonon coupling in solids  

E-Print Network [OSTI]

diffusion on graphene [182] and fluorine chemical bonding [diffusion barrier are well correlated with atomic radius. For ionic bonding,

Chan, Kevin Timothy

2012-01-01T23:59:59.000Z

325

E-Print Network 3.0 - aqueous silver nitrate Sample Search Results  

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

-Partial list Chemical Incompatibilities Summary: , bromine, copper, fluorine, silver, mercury Acetone Concentrated nitric and sulfuric acid mixtures Alkali... (anhydrous) Ammonium...

326

Synthesis and structure of perfluorocongressane  

SciTech Connect (OSTI)

The direct fluorination of inorganic, organometallic and organic compounds, employing the LaMar method, has impacted the synthesis of structurally unusual fluorinated compounds over the past 25 years. Perfluorocongressane was synthesized using elemental fluorine and characterized by mass spectra, {sup 19}F NMR, and X-ray crystallography. 1 fig., 1 tab.

Wei, Han-Chao; Corbelin, S.; Lagow, R.J. [Univ. of Texas, Austin, TX (United States)] [Univ. of Texas, Austin, TX (United States)

1996-03-08T23:59:59.000Z

327

Mesostructures DOI: 10.1002/anie.201310748  

E-Print Network [OSTI]

functionalized with organic groups that can form tight bonding to inorganic species. Such polymers were able analogues (AlPO4 and other related metal phos- phates with open frameworks), titanium dioxide (TiO2. The incorporation of mesoporosity into these materials has been an important issue for resolving the diffusion

Ihee, Hyotcherl

328

Bid Ceil (1996) 87, 143-147 0 Elsevier. Paris  

E-Print Network [OSTI]

stained in a non-Feulgen procedure with osmium annnine-B and imaged at several electron energy the distribution of nucleic acid phos- phorus. osmium ammine-B / energy filtered TEM / RNA / phosphorus mapping- proteins;hnRNP, heterogeneous nuclear RNP. (BR) granules [12, 14, 151. The advantage of employing ES1

Olins, Ada L.

1996-01-01T23:59:59.000Z

329

17. J. Haywood, The Penguin Historical Atlas of the Vi-kings (Penguin Books, London, 1995).  

E-Print Network [OSTI]

adenine dinucleotide phos- phate. Low micromolar concentrations of carbon monoxide inhibited the DNA binding activity of holo-NPAS2 but not that of apo-NPAS2. Upon exposure to carbon monoxide, inactive BMAL1 heme binding during the purification of NPAS2, a mammali- an bHLH (basic helix-loop-helix)­PAS tran

Rutter, Jared

330

The influence of phosphorus nutrition and water stress on the osmotic adjustment and growth of loblolly pine  

E-Print Network [OSTI]

LITERATURE REVIEW Water Stress Osmotic Adjustment Phosphorus MATERIALS AND METHODS Experimental Design Sowing Preparation Sowing and Seedling Cultivation Treatments . . . . . . . ~ Measurements . . . . . . - ~ ~ ~ Statistical Analysis RESULTS... three days. Fertilizer was applied every other time the seedlings received water. Treatments were initiated to provide three levels of phos- phorus nutrition (10, 100, 200 ppm) and three levels of water stress. Water stress was imposed...

Wilson, Alan Byron

1985-01-01T23:59:59.000Z

331

Eos, Vol. 93, No. 41, 9 October 2012 2012. American Geophysical Union. All Rights Reserved.  

E-Print Network [OSTI]

Phos 2012, a conference dedicated to cutting-edge research on phosphorus, was held in the Centro Stefano was sponsored by Cen- tro Stefano Franscini, Swiss National Foun- dation, the U.S. National Science Founda- tion Tracers for a Better Understanding of the Phosphorus Cycle; Monte Verità, Switzerland, 24­29 June 2012 #12;

Paytan, Adina

332

REGULAR PAPER Modulation of the fluorescence yield in heliobacterial cells  

E-Print Network [OSTI]

. They are thought to use a light-driven cyclic electron transport pathway to pump protons, and thereby phos brief flashes is inversely correlated to the variable fluorescence. Using pump-probe spectros- copy), or conversion to heat. When photosynthetic systems are operating efficiently, photochemistry dominates

333

Cholesterol lowering by soya lecithins in the rat in vivo: stimulation of the hepa-  

E-Print Network [OSTI]

of HDL-cholesterol and increase of bile lipid secretion. E Poli-E Poli- chetti N Diaconescu L Malli I You) Gastroenterology 94, A621 ]. The implication of HDL-PC in the bile lipid secretion was also previously shown) containing only 25% pure phos- phatidylcholine (PC). Lecithin stimulates bile secretion [Rioux et al (1988

Paris-Sud XI, Université de

334

Occupancy and site distribution of europium in barium magnesium aluminate Eu Mossbauer spectroscopy  

E-Print Network [OSTI]

as a blue emitting phosphor in various lighting applications. The 4f6 5d4f7 transition of Eu2 Therefore improving the stability of BAM is one of the im- portant concerns for the lighting industries.2 for fluorescent lamps with a high color rendering index. In comparison to the red and green emitting phos- phors

Boolchand, Punit

335

A Lipid-modified Phosphoinositide-specific Phospholipase C (TcPI-PLC) Is Involved in Differentiation of Trypomastigotes to  

E-Print Network [OSTI]

A Lipid-modified Phosphoinositide-specific Phospholipase C (TcPI-PLC) Is Involved C (PI- PLC) is an important component of the inositol phos- phate/diacylglycerol signaling pathway. A newly discov- ered Trypanosoma cruzi PI-PLC (TcPI-PLC) is lipid modified in its N terminus, targeted

Singer, Randall

336

1150 IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 39, NO. 9, SEPTEMBER 2003 Modeling of the ElectriCOIL System  

E-Print Network [OSTI]

) Traditionally, this pumping reaction is fed by a liquid chem- istry singlet oxygen generator (SOG). However discharge oxygen-iodine laser (ElectriCOIL) system. Results of those studies along with more recent Terms--Chemical oxygen-iodine laser, chemical oxygen- iodine laser (COIL), discharge oxygen-iodine laser

Carroll, David L.

337

DOE/RL-2010-89 Review Copy October 1, 2010  

E-Print Network [OSTI]

such as chromium, nitrate, carbon tetrachloride, tritium, iodine-129, and technetium-99 at concentrations above

Hubbard, Susan

338

Effects of Iodine Content in the Electrolyte on the Charge Transfer and Power Conversion Efficiency of Dye-Sensitized Solar Cells under  

E-Print Network [OSTI]

of Dye-Sensitized Solar Cells under Low Light Intensities Jo-Lin Lan, Tzu-Chien Wei,*, Shien-Ping Feng of dye-sensitized solar cells under lower light intensities. By analyzing the current-voltage behavior results in an exclusive application for indoor use. 1. INTRODUCTION Dye-sensitized solar cell (DSSC) has

Cao, Guozhong

339

Bromine and iodine chemistry in a global chemistry-climate model: description and evaluation of very short-lived oceanic sources  

E-Print Network [OSTI]

radiation flux at the surface and the dissolved organic carbon (DOC) con- centration over the ocean.

2012-01-01T23:59:59.000Z

340

Evaluation of ischemia and myocardial viability in patients with coronary artery disease (CAD) with iodine-123-labeled 15-(p-iodophenyl)-3-R,S-methylpentadecanoic acid (BMIPP)  

SciTech Connect (OSTI)

Twenty patients with coronary artery disease (CAD) controlled by coronary arteriography (CA) and biplane left ventricular cineventriculography (LVCV) were investigated with the 15- (p[I-123]iodophenyl)-3-R,S-methylpentadecanoic acid (BMIPP) fatty acid analogue. During maximal symptom limited exercise 5 mCi (200 MBq) of BMIPP were injected followed by two SPECT studies within three hours. After another 30 min, with the patient at rest a third SPECT was performed after reinjection of 3 mCi (100 MBq) BMIPP. Visual inspection of the short and long axis slices and quantitative comparison of the short axis slices of the tomograms were performed to grade BMIPP uptake and refill and detect turnover abnormalities. These were addressed either as scar or as ischemia and compared to CA and a graded score of regional wall motion by LVCV which provided values for sensitivity (SE) and specificity (SP) to detect CAD. Fifteen infarctions had corresponded clinical, angiographic and scintigraphic findings in 93%.

Kropp, J.; Joergens, M.; Glaenzer, K.P.; Luederitz, B.; Biersack, H.J. [Bonn Univ. (Germany); Knapp, F.F. Jr. [Oak Ridge National Lab., TN (United States)

1993-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Study of the kinetics of the gas-phase, iodine catalyzed elimination of HBr from isobutylbromide: the tertiary C-H bond dissociation energy in isobutylbromide.  

E-Print Network [OSTI]

, (with the possible exception of the very electronegative F atom) unless the substituent can delocalize the odd electron such as with the vinyI substituent, i. e. the allyl radical. The stabi'Iization energy is defined as the difference between... of formation of the radical. f s indicated in section (II); the stabilization energy of bromine bridged radical by the delocalization of tne odd electron can be obtained by comparisior, with a localized free radical. Thus, the stabi11zat1on energy...

Jirustithipong, Pongsiri

2012-06-07T23:59:59.000Z

342

Physical features of small disperse coal dust fraction transportation and structurization processes in iodine air filters of absorption type in ventilation systems at nuclear power plants  

E-Print Network [OSTI]

The research on the physical features of transportation and structurization processes by the air-dust aerosol in the granular filtering medium with the cylindrical coal adsorbent granules in an air filter of the adsorption type in the heating ventilation and cooling (HVAC) system at the nuclear power plant is completed. The physical origins of the coal dust masses distribution along the absorber with the granular filtering medium with the cylindrical coal granules during the air-dust aerosol intake process in the near the surface layer of absorber are researched. The quantitative technical characteristics of air filtering elements, which have to be considered during the optimization of air filters designs for the application in the ventilation systems at the nuclear power plants, are obtained.

Ledenyov, Oleg P; Poltinin, P Ya; Fedorova, L I

2012-01-01T23:59:59.000Z

343

Cutting of single-walled carbon nanotubes (SWNT): (1) Cutting of pristine SWNT by ozonolysis; (2) Ozonolysis of functionalized SWNT; (3) Cutting ozonated SWNT by e-irradiation; (4) Cutting fluorinated SWNT by pyrolysis.  

E-Print Network [OSTI]

??Using perfluoropolyether as the solvent, cutting of pristine SWNT has been achieved by extensive ozonolysis with 80% carbon yield at room temperature. The intense disorder… (more)

Chen, Zheyi

2006-01-01T23:59:59.000Z

344

Microchemical systems for singlet oxygen generation  

E-Print Network [OSTI]

Chemical Oxygen-Iodine Lasers (COIL) are a technology of interest for industrial and military audiences. COILs are flowing gas lasers where the gain medium of iodine atoms is collisionally pumped by singlet delta oxygen ...

Hill, Tyrone F. (Tyrone Frank), 1980-

2008-01-01T23:59:59.000Z

345

GSK-3? phosphorylation of functionally distinct tau isoforms has differential, but mild effects  

E-Print Network [OSTI]

with AD-tau, as determined by mass spectrometry, and phos- phorylation site-specific antibodies [11-14]. In vivo, treat- ment of transgenic mouse models of tau-induced neurodegeneration with lithium chloride, an inhibitor of GSK-3?, reduces both tau... (Perkin-Elmer, Boston, MA). Sam- ples were filtered and washed to remove unincorporated ?-32P, then counted in a liquid scintillation counter (Pack- ard 1600TR) [19]. Assay Kit (Cytoskeleton, Inc., Denver, CO) using the man- ufacturer's protocol. Varying...

Voss, Kellen; Gamblin, Truman Chris

2009-05-02T23:59:59.000Z

346

Water quality and urban runoff in selected canal communities along the Texas coast  

E-Print Network [OSTI]

at points along the canal. There are data included in this report on monthly canal water quality for the seven study areas. Samples were analyzed for coli- forms, nitrite, nitrate, Kjeldahl nitrogen (organic nitrogen), phos- phates, TOC, BOD , dissolved..., temperature and salinity profiles, and Rhodamine dye dis- placement. The purpose of this report is to evaluate the sources of pollu- tional loading within the study communities . These data along with information from the literature on coastal canals...

Messenger, Allen Lester

1979-01-01T23:59:59.000Z

347

The interaction of nitrogen and magnesium deficiences in certain aspects of the physiology of the cotton plant  

E-Print Network [OSTI]

effective in raising the phos- phorous content of peas. Their results support the theory that magnesium functions as a carrier of phosphorous. They also point out the need of giving more attention to the magnesium status of agricultural soils with a view... and magnesium deficiencies occurring in the same plant as developed under the experimental conditions stated above. Oftentimes poor growth of plants in the field may result from the lack of two or mox'e nutrients and such simultaneous characterization...

Ghosh, Debabrata

2012-06-07T23:59:59.000Z

348

Organic Phosphoric Acid of the Soil.  

E-Print Network [OSTI]

TEXAS AGRICULTURAL EXPERIMENT STATIONS BULLETIN NO. +6CT /36 CHEMICAL SECTION, FEBRUARY, 191 1 I TECHNICAL BULLETIN Organic Phosphoric Acid of the Soil BY G. S. FRAPS, Chemist POSTOFFICE College Station, Brazos County, 'Texas. ,\\ustin... . ................................................ introduction 5 .............................. hmmonia-Soluble Phosphoric Acid 5 ................ Solubility of Phosphates in Ammonia 6 I Fixation of Phosphoric Acid from Ammonia .......... 7 Effect of Ratio of Soil to Solvent in Extraction of Phos- I I...

Fraps, G. S. (George Stronach)

1911-01-01T23:59:59.000Z

349

Lait (1994) 74, 325-332 Elsevier/INRA  

E-Print Network [OSTI]

was to study p-casein solubilization from native phos- phocaseinate in the conditions of cold storage.0 and 1.6 g/kg) before pH adjustment (4.0, 4.6 and 5.2) followed by cold storage (O°C). The amount did not have a marked effect. native phosphocaseinate II3-casein 1solubilization 1cold storage Résumé

Boyer, Edmond

350

Energy (Cost) Savings by Zero Discharge in Cooling Towers  

E-Print Network [OSTI]

. Relatively clean water may be added directly to the cooling tower basin (see Figure n. Reuse streams containing high suspended solids but of otherwise acceptable quality may be input just before the filters ~n the J The remainingireuse The flowrate..., silica, phos phates, and suspended solids. Other potential foulants and scale-forming species must be controlled by inhibitors or removed by an additional process in the sidestream treatment. Waste streams with scaling and corrosion potential before...

Matson, J. V.; Gardiner, W. M.; Harris, T. G.; Puckorius, P. R.

1982-01-01T23:59:59.000Z

351

Looking before we leap: an ongoing, quantative investigation of asteroid and comet impact hazard mitigation  

SciTech Connect (OSTI)

There are many outstanding questions about the correct response to an asteroid or comet impact threat on Earth. Nuclear munitions are currently thought to be the most efficient method of delivering an impact-preventing impulse to a potentially hazardous object (PHO). However, there are major uncertainties about the response of PHOs to a nuclear burst, and the most appropriate ways to use nuclear munitions for hazard mitigation.

Plesko, Catherine S [Los Alamos National Laboratory; Weaver, Robert P [Los Alamos National Laboratory; Bradley, Paul A [Los Alamos National Laboratory; Huebner, Walter F [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

352

A Chemical and Microbiological Study of Lufkin Fine Sandy Loam in Relation to Productiveness.  

E-Print Network [OSTI]

and significantly correlated with the yields of cotton and corn. The nitrifying capacity of the soil was a better index of the crop-producing power of the soil than the total nitrogen, the total phosphoric acid, or the active phos- phoric acid of the soil.... The addition of nitrogenous materials, cottonseed meal and manure, and of phosphoric acid, as superphosphate and ground rock phosphate, stimulated the nitrifying power of the soil and increased the production of nitrates in field soil. Under conditions...

Reynolds, E. B. (Elbert Brunner)

1931-01-01T23:59:59.000Z

353

Shattering of Peptide Ions on Self-Assembled Monolayer Surfaces...  

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

fluorinated self-assembled monolayer (SAM) surface was studied using a novel Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) specially equipped to perform...

354

Induction slag reduction process for making titanium  

DOE Patents [OSTI]

Continuous process for preparing titanium comprising fluorinating titanium ore, and reducing the formed alkaline earth fluotitanate with an alkaline earth metal in an induction slag reactor.

Traut, Davis E. (Corvallis, OR)

1991-01-01T23:59:59.000Z

355

E-Print Network 3.0 - auger radiation cell Sample Search Results  

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

calculations of triply excited states of fluorine Summary: - tially pumped gas cell. The Auger electrons, resulting from the collision with argon, were emitted... cross...

356

Tomboy tackles tough Recovery Act work  

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

remove hydrogen, fluorine and water tanks atop one of two buildings where workers fed uranium hexafluoride into the plant during the Cold War. Daniels donned the heavy clothing...

357

Membrane Applications at Ceramatec  

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

at Ceramatec Solid Electrolyte Ion Conductors CO 2 to Syngas GTL Advanced Batteries oxygen Fluorine Hydrogen Alkali metals Specialty Chemicals Waste Remediation Disinfection...

358

E-Print Network 3.0 - anhydrous proton conduction Sample Search...  

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

Nafion... .00 The Electrochemical Society, Inc. A Novel Fluorine Production Process in a Proton Exchange Membrane Reactor Robert... membrane-separated electrochemical...

359

1. Christopher L. Adams, H. Schneider and J. M. Weber, Vibrational autodetachment spectroscopy and low-energy  

E-Print Network [OSTI]

. Paul Wenthold, Photoelectron Spectroscopy of Nitrene Anions. 17. Gary Leach, Surface and interface-state vibronic interactions in fluorinated benzene radical cations. 26. Nancy Levinger, Clusters in condensed

Lineberger, W. Carl

360

invited Paper CommercialApplications for COIL  

E-Print Network [OSTI]

oxygen-iodine laser (COIL), the University of Illinois at Urbana-Champaign (UIUC)/STI Optronics team

Carroll, David L.

Note: This page contains sample records for the topic "fluorine iodine phos" 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

E-Print Network 3.0 - aqueous potassium hypochlorite Sample Search...  

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

activated carbons Iodine acetylene, ammonia, hydrogen Mercury sulfuric... Potassium carbon tetrachloride, carbon dioxide, water Potassium chlorate sulfuric and other ......

362

I/I ratios and halogen concentrations in pore waters of the Hydrate Ridge: Relevance for the origin of gas hydrates in ODP Leg 204  

E-Print Network [OSTI]

in fluids associated with hydrocarbons, such as oil field brines (Moran et al., 1995) or coal-bed methane association of iodine with methane allows the identification of the organic source material responsible for iodine and methane in gas hydrates. In all cores, iodine concentrations were found to increase strongly

Fehn, Udo

363

Proceedings of the XIII International Symposium on Gas Flow and Chemical Lasers and High Power Laser Conference, Florence, Italy 18-22 September 2000, The Int. Soc. for Opt. Eng. Vol. 4184, P.O. Box 10, Bellingham, WA 98227-0010, pp. 40-44.  

E-Print Network [OSTI]

, electrical singlet oxygen generation, iodine dissociation. 1. INTRODUCTION Several dramatic changes to gain generator technologies are needed to allow chemical oxygen-iodine laser (COIL) systems to achieve their full improvements in generation of excited states of both oxygen and iodine. The development of gas phase O2(1 D

Carroll, David L.

364

*cuaerospace@cuaerospace.com; phone 217-333-8274; fax 217-244-7757; http://cuaerospace.com; CU Aerospace, 2004 S. Wright St. Ext., Urbana, IL, 61801; **wsolomon@uiuc.edu; phone 217-244-7646; fax 217-244-0720; http://www.aae.uiuc.edu;  

E-Print Network [OSTI]

chemistry singlet oxygen generator (SOG). However, the logistic issues of dealing with the liquid SOG Work on the Development of an Electric Discharge Oxygen Iodine Laser D. L. Carroll*a , J. T. Verdeyen discharge oxygen-iodine laser (ElectriCOIL) system in conjunction with injection of pre-dissociated iodine

Carroll, David L.

365

Proceedings of the Gas and Chemical Lasers and Intense Beam Applications III Conference, San Jose, California 22-24 January 2002, The Int. Soc. for Opt. Eng. Vol. 4631, P.O. Box 10, Bellingham, WA 98227-0010, pp. 154-160.  

E-Print Network [OSTI]

by a liquid chemistry singlet oxygen generator (SOG). Workers at CUA and UIUC are now addressing. Keywords: chemical oxygen-iodine laser, COIL, ElectriCOIL, RF excitation of oxygen, singlet-delta oxygen 1 oxygen-iodine laser (COIL) [McDermott, 1978] operates on the electronic transition of the iodine atom

Carroll, David L.

366

Nordisk kernesikkerhedsforskning Norrnar kjarnryggisrannsknir  

E-Print Network [OSTI]

. Key words Iodine, nuclear safety, severe accident, containment, ozone NKS-204 ISBN 978 identification code Iodine, nuclear safety, severe accident, containment, ozone Summary The behaviour of iodine ydinturvallisuustutkimus Nordisk kjernesikkerhetsforskning Nordisk kärnsäkerhetsforskning Nordic nuclear safety research

367

Natural Organic Matter (NOM) in Aquatic Systems: Interactions with Radionuclides (234Th (IV), 129 I) and Biofilms  

E-Print Network [OSTI]

in natural waters. At the F-area of the Savannah River Site (SRS), iodine species in the groundwater consisted of 48.8 percent iodide, 27.3 percent iodate and 23.9 percent organo-iodine. Each of these iodine species exhibited vastly different transport...

Zhang, Saijin

2011-10-21T23:59:59.000Z

368

United States Office of Air and Radiation EPA 402-R-04-002C Environmental Protection Agency July 2004  

E-Print Network [OSTI]

and Available Kd Values for Americium, Arsenic, Curium, Iodine, Neptunium, Radium, and Technetium #12;i and Available Kd Values for Americium, Arsenic, Curium, Iodine, Neptunium, Radium, and Technetium July 2004: americium, arsenic, curium, iodine, neptunium, radium, and technetium. This three-volume report also

369

Proceedings of the International Conference on Lasers '98, ed. V.J. Corcoran, STS Press, McLean VA, 1999, in press. PERFORMANCE OF A HIGH POWER CHEMICAL OXYGEN-IODINE LASER  

E-Print Network [OSTI]

, IL 61801 C.H. Fisher STI Optronics, 2755 Northup Way Bellevue, WA 98004-1495 Abstract The Verti-Champaign (UIUC)/STI Optronics team identified the decommissioning and decontamination (D&D) of nuclear facilities

Carroll, David L.

370

Process for electrolytically preparing uranium metal  

DOE Patents [OSTI]

A process for making uranium metal from uranium oxide by first fluorinating uranium oxide to form uranium tetrafluoride and next electrolytically reducing the uranium tetrafluoride with a carbon anode to form uranium metal and CF.sub.4. The CF.sub.4 is reused in the fluorination reaction rather than being disposed of as a hazardous waste.

Haas, Paul A. (Knoxville, TN)

1989-01-01T23:59:59.000Z

371

Process for producing 8-fluoropurines  

DOE Patents [OSTI]

An efficient, regio-controlled approach to the synthesis of 8-fluoropurines by direct fluorination of purines with dilute elemental fluorine, or acetyl hypofluorite, is provided. In a preferred embodiment, a purine compound is dissolved in a polar solvent and reacted with a dilute mixture of F{sub 2} in He or other inert gas.

Barrio, J.R.; Satyamurthy, N.; Namavari, M.; Phelps, M.E.

1999-01-19T23:59:59.000Z

372

Any correspondence concerning this service should be sent to the repository administrator: staff-oatao@inp-toulouse.fr  

E-Print Network [OSTI]

by the presence of intercalated fluorinated species) whereas the perfluorinated compounds, where the fluorocarbon Fluorinated carbons Á Raman spectroscopy 1 Introduction Conventional fluorocarbon materials CFx are generally fluorocarbon layers (arm- chair conformation) associated to covalent C­F bonds. In these structures carbon

Paris-Sud XI, Université de

373

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]

of analytes [1]. As an alternative for hydrocar- bon columns, fluorocarbon columns have been developed for the separation of both fluorinated- and non-fluorinated compounds [2­9]. For example, fluorocarbon columns have been used successfully in fluorous mixture synthesis [10­14]. In comparison, the use of fluorocarbon

Wang, Weizhen

374

Systems and methods for treating material  

DOE Patents [OSTI]

Systems for treating material are provided that can include a vessel defining a volume, at least one conduit coupled to the vessel and in fluid communication with the vessel, material within the vessel, and NF.sub.3 material within the conduit. Methods for fluorinating material are provided that can include exposing the material to NF.sub.3 to fluorinate at least a portion of the material. Methods for separating components of material are also provided that can include exposing the material to NF.sub.3 to at least partially fluorinate a portion of the material, and separating at least one fluorinated component of the fluorinated portion from the material. The materials exposed to the NF.sub.3 material can include but are not limited to one or more of U, Ru, Rh, Mo, Tc, Np, Pu, Sb, Ag, Am, Sn, Zr, Cs, Th, and/or Rb.

Scheele, Randall D; McNamara, Bruce K

2014-10-21T23:59:59.000Z

375

Impact of transmutations in fusion environment on Flibe chemistry.  

SciTech Connect (OSTI)

Transmutation rates of Li, Be and F are calculated for a typical flibe blanket. The results concluded that the transmutation rate of F is more than double that of Be. Because of the high destruction rate of fluorine, there will be no free fluorine in the molten salt. Therefore, experimental program to address the chemistry control of flibe does not have to worry about the issues associated with free fluorine. Also, this calculation defines the chemical of flibe after irradiation. This chemical state needs to be simulated closely for the flibe chemistry control experiment.

Sze, D. K.; Sawan, M. E.; Cheng, E. T.

2000-11-15T23:59:59.000Z

376

Reactions of tungsten-titanium alloys with decomposition products from a glow UHF discharge in a tetrafluoromethane-oxygen mixture  

SciTech Connect (OSTI)

Decomposition products from tetrafluoromethane mixed with oxygen react with WTi alloy in an HF glow discharge, the extent of reaction being dependent on the atomic fluorine concentration, temperature, and surface potential. The rates of reaction with the CF/sub 4/ products are proportional to the atomic fluorine concentrations. The effective activation energies have been determined for the atomic fluorine reacting with the alloy components in various gases. The metal removal rate increases when the specimen is negative with respect to the plasma potential, which is ascribed to the surface being bombarded by positive ions or to the electric field affecting the surface reaction rates.

Amirov, I.I.; Vinogradov, G.K.; Slovetskii, D.I.

1988-07-01T23:59:59.000Z

377

Further evaluation of dose estimation using the FBX dosimeter  

E-Print Network [OSTI]

offset and general discrep- ancy between the expected dose and the one measured by the FBX dosimeter. To determine the origin of these anomalies, the dosimeter was used in intimate mixtures with tritiated water, HTO, iodine crystals, and various dilute... iodine solutions. When mixed with HTO, the doses measured by the FBX solution were in better agree- ment with the doses predicted by MIRD techniques than the measurements with I. In 131 subsequent mixtures with stable iodine crystals, the dosimeter...

Helfinstine, Suzanne Yvette

1988-01-01T23:59:59.000Z

378

Calling on a million minds for community annotation in WikiProteins  

E-Print Network [OSTI]

search engine be case insensitive and find CLB2 based on the query term Clb2, but in a wider context, case insensitivity leads to aggravation of the ambiguity prob- lem. For example, in PubMed, the query 'Clb2' delivers papers on dental self... '. Furthermore, the authors of this abstract have used several constructs that make text mining difficult as they enter conjugate terms such as 'mitotic cyclin (Clb2)-bound Cdc28 (Cdk1 homolog)', 'Clb2-Cdc28', 'Clb2-Cdc28-phos- phorylated Swe1', 'Cdc28/Cdk1...

Mons, Barend; Ashburner, Michael; Chichester, Christine; van Mulligen, Erik; Weeber, Marc; den Dunnen, Johan T; Musen, Marc; Cockerill, Matthew; Hermjakob, Henning; Packer, Abel; Pacheco, Roberto; Lewis, Suzanna; Berkeley, Alfred; Melton, William; Barris, Nickolas; Borner, Katy; Meijssen, Gerard; Moeller, Erik; Roes, Peter Jan; Mons, Albert; van Ommen, Gert; Wales, Jimmy; Bairoch, Amos

2008-05-28T23:59:59.000Z

379

The effects of various long term fertility treatments on the phosphorus status of three Texas Vertisols  

E-Print Network [OSTI]

in the Houston Black clay, Furthermore, the data obtained show that regardless of the rate of P20~ applied, added phos- phates accumulated in the calcium, reductant-soluble, aluminum and dicalcium fractions in an approximate 2$". 0". 2. "I ratio. In the San... Saba clay, applied P was converted pri- marily to Che aluminum and reductant- soluble forms. Pertllizatlon wiCh N or N, P tended to decrease Che eel= cium phosphate levels even though Che soil is still dis- tinctly calcareous. Percentagewise...

Supak, James Raymond

1969-01-01T23:59:59.000Z

380

Commercial Fertilizers and Poisonous Insecticides in 1906-7.  

E-Print Network [OSTI]

used in Texas is comparatively small. The amount is increasing and may be expected to increase yearly. The quantity sold in Texas in 1905-06 was 13,500 tons. In 1906-07 it was 19,200 tons, this being an increase of 42 per cent. This does not in... to the soil in such forms that the plant can take it up easily. It thus supplements the avail- able plant food of the soil and increases the crop if the soil does not provide enough plant food. The essential constituents of a fertilizer are phos- phoric...

Fraps, G. S. (George Stronach)

1907-01-01T23:59:59.000Z

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


381

E-Print Network 3.0 - age-dependent radium retention Sample Search...  

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

Protection Agency July 2004 Summary: and Available Kd Values for Americium, Arsenic, Curium, Iodine, Neptunium, Radium, and Technetium 12;i... and Available Kd Values for...

382

Biofortifying Brassica with calcium (Ca) and magnesium (Mg)  

E-Print Network [OSTI]

zinc, copper, calcium, magnesium, selenium and iodine. NewE. 2008. Role of dietary magnesium in cardiovascular diseaseShoot calcium (Ca) and magnesium (Mg) concentrations differ

2009-01-01T23:59:59.000Z

383

alejados del implante: Topics by E-print Network  

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

Purpose: Permanent prostate brachytherapy (PPB) as a treatment option for prostate cancer requires implantation of 80-150 radioactive iodine-125 (I-125) "seeds" into the...

384

Analytical Data Report of Water Samples Collected For I-129 Analysis  

SciTech Connect (OSTI)

This is an analytical data report for samples received from the central plateau contractor. The samples were analyzed for iodine-129.

Lindberg, Michael J.

2009-10-26T23:59:59.000Z

385

Modeling the micellization behavior of fluorosurfactants using molecular-thermodynamic theory  

E-Print Network [OSTI]

Fluorinated surfactants are an important class of surfactants because they possess properties that are far superior than those of their hydrocarbon analogs. As a result, they are used in a wide variety of applications ...

Iyer, Jaisree (Jaisree Kannan)

2013-01-01T23:59:59.000Z

386

Integrated Manhattan Project for Excellence in Radiochemistry (IMPER)  

SciTech Connect (OSTI)

Accomplishments are reported in these areas: single step radiolabeling of peptides with fluorine-18; photoreduction of 99Tc pertechnetate by nanometer-sized metal oxides for environmental remediation; synthesis and characterization of multi-modal CNT imaging constructs.

Lewis, Jason

2014-03-27T23:59:59.000Z

387

e l e m e n t a l a n a l y s i s Carbon, Hydrogen, Nitrogen, Sulfur and Oxygen analyzers  

E-Print Network [OSTI]

Scientific FLASH 2000 Series Organic Elemental Analyzers Organic Chemistry & Pharmaceuticals Petrochemistry · Catalysts · Textiles · Pesticides · Detergents · Fluorine-compounds Organic/Inorganic Chemistry · Cokes · Crude oils · Gasoline/Diesel · Alternative fuels · Petroleum derivates · Lubricants · Oil

Wells, Mathew G. - Department of Physical and Environmental Sciences, University of Toronto

388

Detection and Differentiation of Neutral Organic Compounds by [superscript 19]F NMR with a Tungsten Calix[4]arene Imido Complex  

E-Print Network [OSTI]

Fluorinated tungsten calix[4]arene imido complexes were synthesized and used as receptors to detect and differentiate neutral organic compounds. It was found that the binding of specific neutral organic molecules to the ...

Zhao, Yanchuan

389

C3TA10700K 9327..9331  

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

by elemental fluorine for energy storage devices Jamie L. Adcock, a Pasquale F. Fulvio * b and Sheng Dai * ab Graphite fluoride is classified into (CF) n and (C 2 F) n types...

390

Nested potassium hydroxide etching and protective coatings for silicon-based microreactors  

E-Print Network [OSTI]

We have developed a multilayer, multichannel silicon-based microreactor that uses elemental fluorine as a reagent and generates hydrogen fluoride as a byproduct. Nested potassium hydroxide etching (using silicon nitride ...

de Mas, Nuria

391

U.S. Department of the Interior U.S. Geological Survey  

E-Print Network [OSTI]

- es are carbon dioxide, sulfur dioxide, hydrogen sulfide, hydrogen, and fluorine. Sulfur dioxide gas have nearly crashed be- cause of engine failure. Large eruption clouds can extend hundreds of miles

Torgersen, Christian

392

Fluorous Biphase Synthesis of a Poly(p-phenyleneethynylene) and its Fluorescent Aqueous Fluorous-Phase Emulsion  

E-Print Network [OSTI]

It's just a phase: A highly fluorinated compound with a rigid three-dimensional architecture was synthesized as a monomer for poly(p-phenyleneethynylene)s (PPEs). Fluorous biphase reactions were applied for the synthesis ...

Lim, Jeewoo

393

Fatigue Enhancement of a Carbon Fiber Reinforced Nanocomposite  

E-Print Network [OSTI]

The primary objective of the present investigation is to study the fatigue characteristics of a woven carbon fiber reinforced polymer which has been modified with either amine or fluorine functionalized carbon nanotubes on the fiber-matrix interface...

Wilkerson, Justin W.

2008-08-19T23:59:59.000Z

394

Biodegradation Potential of Perfluorooctanoate and Perfluorooctane Sulfonate  

E-Print Network [OSTI]

and fluorine present in PFOA and PFOS makes them stable and resistant to conventional treatment processes. Several advanced chemical processes can degrade PFOA and PFOS under high temperatures and pressures or other extreme conditions. However, the potential...

Thelakkat Kochunarayanan, Parvathy

2012-10-19T23:59:59.000Z

395

Liquid-phase and vapor-phase dehydration of organic/water solutions  

DOE Patents [OSTI]

Processes for dehydrating an organic/water solution by pervaporation or vapor separation using fluorinated membranes. The processes are particularly useful for treating mixtures containing light organic components, such as ethanol, isopropanol or acetic acid.

Huang, Yu (Palo Alto, CA); Ly, Jennifer (San Jose, CA); Aldajani, Tiem (San Jose, CA); Baker, Richard W. (Palo Alto, CA)

2011-08-23T23:59:59.000Z

396

Spectral Modulation of Upconversion Emissions with Composition Tuning and Surface Plasmonic Resonance  

E-Print Network [OSTI]

sodium, fluorine and rare-earth elements. The carbon signalEnergy levels of rare earth elements and the energy transferbetween two centers. 1 Rare earth element doped materials

Zhang, Hua

2013-01-01T23:59:59.000Z

397

Process for the production of 5'-deoxy-5-(/sup 18/F)fluorouridine  

DOE Patents [OSTI]

Process for the production of 5'-deoxy-5-fluorouridine and the corresponding /sup 18/F compound by the reaction of fluorine or acetyl hypofluorite with 2', 3'-di-O-acetyl-5'-deoxyuridine followed by hydrolysis.

Shiue, C.Y.; Wolf, A.P.; Friedkin, M.

1983-08-10T23:59:59.000Z

398

Fuel cell electrolyte membrane with acidic polymer  

DOE Patents [OSTI]

An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.

Hamrock, Steven J. (Stillwater, MN); Larson, James M. (Saint Paul, MN); Pham, Phat T. (Little Canada, MN); Frey, Matthew H. (Cottage Grove, MN); Haugen, Gregory M. (Edina, MN); Lamanna, William M. (Stillwater, MN)

2009-04-14T23:59:59.000Z

399

CX-007967: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Electrochemical Fluorination in Molten Fluoride Salts CX(s) Applied: B3.6 Date: 02/07/2012 Location(s): South Carolina Offices(s): Savannah River Operations Office

400

A Novel Route to Enantioenriched ?-Allyl ?-Fluoroketones via Palladium Catalyzed Decarboxylation  

E-Print Network [OSTI]

This thesis details the development of a novel catalytic asymmetric route to ?-fluorinated ketones. Enantioenriched ?-fluoroketones were produced in good yields and high enantiomeric ratios via palladium-catalyzed ...

Barron, Briana R.

2008-08-21T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Altering Wettability in Gas Condensate Sandstone Reservoirs for Gas Mobillity Improvement  

E-Print Network [OSTI]

study on Berea sandstone rocks treated with a fluorinated polymer. Various concentrations of the polymer are investigated to obtain the optimum alteration in wettability to intermediate gas-wet. This wetting condition is achieved with an 8% polymer...

Fernandez Martinez, Ruth Gabriela

2012-07-16T23:59:59.000Z

402

Title of Document: MECHANISTIC STUDIES OF PLASMA-SURFACE INTERACTIONS DURING  

E-Print Network [OSTI]

devices and ICs produced. Fluorocarbon discharges are commonly used for dielectric etching, e.g. SiO2. Free fluorine atoms that are liberated from fluorocarbon species during ion bombardment are driven

Anlage, Steven

403

Synthesis of new high performance lubricants and solid lubricants. Progress report, April 1992--March 1993  

SciTech Connect (OSTI)

Synthesis and testing was begun on a number of new classes of lubricants: perfluoropolyethers (branching effects), perfluoromethylene oxide ethers, chlorine-substituted fluorocarbon polyethers, fluorine-containing branched ether lubricants, glycerine- based perfluoropolyesters, perfluoro epoxy ether chains, etc.

Lagow, R.J.

1993-04-01T23:59:59.000Z

404

Synthesis of new high performance lubricants and solid lubricants  

SciTech Connect (OSTI)

Synthesis and testing was begun on a number of new classes of lubricants: perfluoropolyethers (branching effects), perfluoromethylene oxide ethers, chlorine-substituted fluorocarbon polyethers, fluorine-containing branched ether lubricants, glycerine- based perfluoropolyesters, perfluoro epoxy ether chains, etc.

Lagow, R.J.

1993-04-01T23:59:59.000Z

405

Rare Earth Oxide Fluoride Nanoparticles And Hydrothermal Method For Forming Nanoparticles  

DOE Patents [OSTI]

A hydrothermal method for forming nanoparticles of a rare earth element, oxygen and fluorine has been discovered. Nanoparticles comprising a rare earth element, oxygen and fluorine are also described. These nanoparticles can exhibit excellent refractory properties as well as remarkable stability in hydrothermal conditions. The nanoparticles can exhibit excellent properties for numerous applications including fiber reinforcement of ceramic composites, catalyst supports, and corrosion resistant coatings for high-temperature aqueous solutions.

Fulton, John L. (Richland, WA); Hoffmann, Markus M. (Richland, WA)

2003-12-23T23:59:59.000Z

406

Rare earth oxide fluoride nanoparticles and hydrothermal method for forming nanoparticles  

DOE Patents [OSTI]

A hydrothermal method for forming nanoparticles of a rare earth element, oxygen and fluorine has been discovered. Nanoparticles comprising a rare earth element, oxygen and fluorine are also described. These nanoparticles can exhibit excellent refractory properties as well as remarkable stability in hydrothermal conditions. The nanoparticles can exhibit excellent properties for numerous applications including fiber reinforcement of ceramic composites, catalyst supports, and corrosion resistant coatings for high-temperature aqueous solutions.

Fulton, John L. (Richland, WA) [Richland, WA; Hoffmann, Markus M. (Richland, WA) [Richland, WA

2001-11-13T23:59:59.000Z

407

Modified lithium vanadium oxide electrode materials products and methods  

DOE Patents [OSTI]

A method of improving certain vanadium oxide formulations is presented. The method concerns fluorine doping formulations having a nominal formula of LiV.sub.3 O.sub.8. Preferred average formulations are provided wherein the average oxidation state of the vanadium is at least 4.6. Herein preferred fluorine doped vanadium oxide materials, electrodes using such materials, and batteries including at least one electrode therein comprising such materials are provided.

Thackeray, Michael M. (Naperville, IL); Kahaian, Arthur J. (Chicago, IL); Visser, Donald R. (Naperville, IL); Dees, Dennis W. (Downers Grove, IL); Benedek, Roy (Western Springs, IL)

1999-12-21T23:59:59.000Z

408

New fluorocarbon elastomers for seals for geothermal and other aggressive environments. Final report  

SciTech Connect (OSTI)

Saturated ethyllenic elastomers having a range of methyl group substitution, and a range of partial fluorine substitution were screened. Elastomers based on vinylidene fluoride hexafluoropropylene (VDFHFP) and those based on tetrafluoroethylenepropylene (TFEP) (alternating) were successfully cross-linked by electron-beam radiation and fluorinated to yield elastomeric products, but those based on ethylene-propylene-diene (EPDM) elastomer became brittle after fluorination. The best products were evaluated using tensile strength, elongation at break, solvent swelling, thermogravimetric analysis and infrared. A wide range of carbon-black filled compositions using the TFEP elastomer were cross-linked. The compositions were then fluorinated at or near room temperature for extended periods of time. After fluorination the samples were subjected to geothermal brine at 300/sup 0/C. The best carbon-black filled composition again lasted at least 100 days in the geothermal brine. This filler-elastomer composition was chosen for use in the production of 0-rings. The 0-rings were produced by compression molding using a 30 ton hydraulic press. Various sizes of 0-rings were produced ranging fro 0.8 to 2.0 inches in diameter and from 1/16 to 3/16 inches in width. The final 0-rings were cross-linked at 40 Mrad and fluorinated under the optimized conditions developed for the samples.

Lagow, R.J.

1982-12-01T23:59:59.000Z

409

For permission to copy or to republish, contact the copyright owner named on the first page. For AIAA-held copyright, write to AIAA Permissions Department,  

E-Print Network [OSTI]

by a liquid chemistry singlet oxygen generator (SOG). * Engineering Director, CU Aerospace, Senior Member AIAA) may be produced in an electrical discharge that may permit lasing of an electric discharge oxygen oxygen-iodine laser (COIL) [McDermott, 1978] operates on the electronic transition of the iodine atom

Carroll, David L.

410

JOURNAL DE PHYSIQUE IV Colloque C7, suppldment au Journal de Physique 111,Vol. 1, dkembre 1991  

E-Print Network [OSTI]

SOMEFEATURES OF THE KINETICS OF OXYGEN-IODINELASER WITH PHOTOLYTICAL SINGLETOXYGEN GENERATION M.P. FROLOV, Yu of the kinetics of the pulsed oxygen-iodine laser with photolytic source of singlet oxygen are presented influence of oxygen atoms on molecular iodine dissociation and energy store relaxation is observed

Paris-Sud XI, Université de

411

wsolomon@uiuc.edu; phone 1-217-244-7646; fax 1-217-244-0720; http://www.aae.uiuc.edu; Univ. of Illinois, 306 Talbot Lab, 104 S. Wright St., Urbana, IL 61801.  

E-Print Network [OSTI]

(1 ) is produced by a liquid chemistry singlet oxygen generator (SOG). However, the difficulties of employing oscillation of a chemical oxygen-iodine laser system in conjunction with injection of pre-dissociated iodine. Results of those studies along with recent experimental results indicate that generation of O2(1 ) can

Carroll, David L.

412

For permission to copy or to republish, contact the copyright owner named on the first page. For AIAA-held copyright, write to AIAA Permissions Department,  

E-Print Network [OSTI]

oxygen generator (SOG). However, the logistic issues of dealing with the liquid SOG * Engineering oxygen-iodine laser (COIL) [McDermott, 1978] operates on the electronic transition of the iodine atom electric generation scheme to provide the precursor energy donor species O2(1 D) and that an electrically

Carroll, David L.

413

IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 41, NO. 10, OCTOBER 2005 1309 Studies of CW Laser Oscillation on the 1315-nm  

E-Print Network [OSTI]

is produced by a liquid chemistry singlet oxygen generator (SOG). There are many system issues having to do composed of two 99.995% reflective mirrors. Index Terms--Chemical oxygen­iodine laser (COIL), electric discharge oxygen­iodine laser, electriCOIL, radio frequency (RF) excitation of oxygen, singlet-delta oxygen

Carroll, David L.

414

wsolomon@uiuc.edu; phone 1-217-244-7646; fax 1-217-244-0720; http://www.aae.uiuc.edu; Univ. of Illinois, 306 Talbot Lab, 104 S. Wright St., Urbana, IL 61801.  

E-Print Network [OSTI]

oxygen generator (SOG). However, the difficult issues involving liquid SOG systems motivated permit lasing of an electric discharge oxygen-iodine laser (ElectriCOIL) system, possibly in conjunctionCOIL, COIL, chemical oxygen iodine laser, electric discharge modeling 1. INTRODUCTION The classic chemical

Carroll, David L.

415

JOURNALDE PHYSIQUEIV ColloqueC7, suppl6ment au Journal de Physique 111,Vol. 1, dhmbre 1991  

E-Print Network [OSTI]

system (figure I)consists o f a bubble column singlet oxygen generator, a water vapor cold trap are being conducted on a high power chemical oxygen iodine laser. Optical diagnostics were developed t o power o f at least one kilowatt i s expected. 1 - Introduction The chemical oxygen iodine laser (COIL

Boyer, Edmond

416

Volume 170, number 5,6 CHEMICAL PHYSICS LETTERS 20 July 1990 Nature of the red emission  

E-Print Network [OSTI]

in the chemical oxygen iodine laser system Ruiping Huang `, Rong Zhang ' and Richard N. Zare Deparfmenfof at 703 nm is observed when a heated metal wire is placed downstream of an O,( `A& generator used in the chemical oxygen iodine laser (COIL) system. The O2(`4) isproduced by bubbling Cl, through an alkaline

Zare, Richard N.

417

AIAA Plasmadynamics and Lasers Conference 5-8 June 2006, San Francisco, California  

E-Print Network [OSTI]

chemical singlet oxygen generator (SOG) with an electrically excited all gas phase system.3,4 Other to improvements in the hybrid Electric Oxygen-Iodine Laser (ElectricOIL) system that significantly increased system parameters. I. Introduction The classical chemical oxygen iodine laser (COIL) system1 employs

Carroll, David L.

418

Modeling of a Multi-Stream Injection COIL with Enhanced Mixing Ejectors  

E-Print Network [OSTI]

- oxygen generator (SOG). The liquid SOG technology has developed to a fairly mature state. However, much-pressure chemical oxygen- iodine laser (COIL) have been experimentally tested. To obtain a better understanding The chemical oxygen-iodine laser (COIL) was first demonstrated in 1978 [McDermott, 1978]. Since that initial

Carroll, David L.

419

Investigation of the Production of O2(a1 ) in Rectangular  

E-Print Network [OSTI]

is not simply a flow consisting primarily of O2(a) and O2(X) (as in classic COIL singlet-oxygen generation Oxygen- Iodine Laser (ElectricOIL) system. This continuous wave (cw) laser operating on the 1315 nm-section and multi-circular tube discharges. I. Introduction The electrically driven oxygen-iodine laser (Electric

Carroll, David L.

420

"Thyroid Disorders" Deaf Health Talks  

E-Print Network [OSTI]

gland to function and make thyroid hormones Naturally occurs in soil and ocean 40% of people in world on the thyroid C. Radiation exposure D. Lack of iodine E. Alien snatching our thyroid glands #12;What is the most itself on the thyroid C. Radiation exposure D. Lack of iodine E. Alien snatching our thyroid glands #12

Goldman, Steven A.

Note: This page contains sample records for the topic "fluorine iodine phos" 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

United States Environmental Protection Agency Office of Radiation and Indoor Air (6608J) PAG Manual Fact Sheet | April 2013 Page 1 http://www.epa.gov/radiation/rert/pags.html  

E-Print Network [OSTI]

://www.epa.gov/radiation/rert/pags.html · Food Guidance: Planners are referred to current guidance on radioactive contamination in food from of a potassium iodide (KI), a compound that inhibits the thyroid's uptake of radioactive iodine taken radioactive iodine; it does not provide protection against other radioactive substances.) · Guidance

422

Supporting Information Available. Supplementary Figure 1: PEG-Nanorod Synthesis and Stability In Vitro. A) The plasmon resonance of  

E-Print Network [OSTI]

. Notably, iodine reagents lack absorbance in the near- infrared that could allow remote photothermal heating. B) Photothermal heating comparison between PEG-Nanorods, iodine, and saline monitored using Modeling of Photothermal Tumor Heating. A) X-ray CT image of PEG-Nanorod distribution in tumor B) A 3D

Bhatia, Sangeeta

423

MODELLING RADIOIODINE DYNAMICS Modelling the Dynamics of Radioiodine in Dairy Cows  

E-Print Network [OSTI]

Department of Physiology & Environmental Science University of Nottingham Sutton Bonington LE12 5RD UK G for significant fecal excretion of radioiodine. The5 model is used to consider the effect of dietary stable iodine of iodine, in particular I-131, are important components in fallout from2 nuclear accidents

Crout, Neil

424

The chemistry of halogens on diamond: effects on growth and electron emission  

SciTech Connect (OSTI)

Diamond growth using halogenated precursors was studied in several diamond growth reactors. In a conventionao plasma reactor, diamond growth using the following gas mixtures was studied: CF{sub 4}/H{sub 2}, CH{sub 4}/H{sub 2}, CH{sub 3}F/H{sub 2}, and CH{sub 3}CL/H{sub 2}. Both the diamond growth measurements demonstrated ineffective transport of halogen radicals to the diamond surface during the growth process. In order to transport radical halogen species to the diamond surface during growth, a flow-tube reactor was constructed which minimized gas phase reactions. Also, the flow-tube reactor enabled pulsed gs transport to the diamond surface by fast-acting valves. Molecular beam mass spectroscopy was used to find condition which resulted in atomic hydrogen and/or atomic fluorine transport to the growing diamond surface. Although such conditions were found, they required very low pressures (0.5 Torr and below); these low pressures produce radical fluxes which are too low to sustain a reasonable diamond growth rate. The sequential reactor at Stanford was modified to add a halogen-growth step to the conventinoal atomic hydrogen/atomic carbon diamond growth cycle. Since the atomic fluorine, hydrogen and carbon environments are independent in the sequential reactor, the effect of fluorine on diamond growth could be studied independently of gas phase reactions. Although the diamond growth rate was increased by the use of fluorine, the film quality was seen to deteriorate as well as the substrate surface. Moreover, materials incompatibilities with fluorine significantly limited the use of fluorine in this reactor. A diamond growth model incorporating both gas phase and surface reactions was developed for the halocarbon system concurrent with the film growth efforts. In this report, we review the results of the growth experiments, the modeling, and additional experiments done to understand fluorine with diamond surfaces.

Hsu, W.L.; Pan, L.S.; Brown, L.A. [Sandia National Labs., Livermore, CA (United States)] [and others

1997-02-01T23:59:59.000Z

425

Current status of fluoride volatility method development  

SciTech Connect (OSTI)

The Fluoride Volatility Method is based on a separation process, which comes out from the specific property of uranium, neptunium and plutonium to form volatile hexafluorides whereas most of fission products (mainly lanthanides) and higher transplutonium elements (americium, curium) present in irradiated fuel form nonvolatile tri-fluorides. Fluoride Volatility Method itself is based on direct fluorination of the spent fuel, but before the fluorination step, the removal of cladding material and subsequent transformation of the fuel into a powdered form with a suitable grain size have to be done. The fluorination is made with fluorine gas in a flame fluorination reactor, where the volatile fluorides (mostly UF{sub 6}) are separated from the non-volatile ones (trivalent minor actinides and majority of fission products). The subsequent operations necessary for partitioning of volatile fluorides are the condensation and evaporation of volatile fluorides, the thermal decomposition of PuF{sub 6} and the finally distillation and sorption used for the purification of uranium product. The Fluoride Volatility Method is considered to be a promising advanced pyrochemical reprocessing technology, which can mainly be used for the reprocessing of oxide spent fuels coming from future GEN IV fast reactors.

Uhlir, J.; Marecek, M.; Skarohlid, J. [UJV - Nuclear Research Institute, Research Centre Rez, CZ-250 68 Husinec - Rez 130 (Czech Republic)

2013-07-01T23:59:59.000Z

426

Transmutation of {sup 129}I Using an Accelerator-Driven System  

SciTech Connect (OSTI)

A conceptual blanket design for {sup 129}I transmutation is proposed for an accelerator-driven system (ADS) that is designed to transmute minor actinides (MAs). In this ADS, 250 kg/yr of MA and 56 kg/yr of iodine are simultaneously transmuted, and they correspond to the quantities generated from {approx}10 units of existing light water reactors. Furthermore, an introduction scenario and the benefit of iodine transmutation are studied for future introduction of fast breeder reactors. It is shown that the transmutation of iodine benefits the concept of underground disposal.

Nishihara, Kenji; Takano, Hideki [Japan Atomic Energy Research Institute (Japan)

2002-01-15T23:59:59.000Z

427

Thermal Reactions of Uranium Metal, UO2, U3O8, UF4, and UO2F2 with NF3 to Produce UF6  

SciTech Connect (OSTI)

he objective of this paper is to demonstrate that NF3 fluorinates uranium metal, UO2, UF4, UO3, U3O8, and UO2F2•2H2O to produce the volatile UF6 at temperatures between 100 and 500?C. Thermogravimetric reaction profiles are described that reflect changes in the uranium oxidation state and discrete chemical speciation. Differences in the onset temperatures for each system indicate that NF3-substrate interactions are important for the temperature at which NF3 reacts: U metal > UO3 > UO2 > UO2F2 > UF4 and in fact may indicate different fluorination mechanisms for these various substrates. These studies demonstrate that NF3 is a potential replacement fluorinating agent in the existing nuclear fuel cycle and in oft-proposed actinide volatility reprocessing.

McNamara, Bruce K.; Scheele, Randall D.; Kozelisky, Anne E.; Edwards, Matthew K.

2009-11-01T23:59:59.000Z

428

Donor bound excitons in ZnSe nanoresonators - Applications in quantum information science  

SciTech Connect (OSTI)

Here we summarize the advantages of excitons bound to isolated fluorine donor in ZnSe/ZnMgSe quantum well nano-structures. Devices based on these semiconductors, are particularly suited to implement concepts of the optical manipulation of quantum states in solid-state material. The fluorine donor in ZnSe provides a physical qubit with potential advantages over previously researched qubits. In this context we show several initial demonstrations of devices, such as a low-threshold microdisk laser and an indistinguishable single photon source. Additionally we demonstrate the realization of a controllable three-level-system qubit consisting of a single Fluorine donor in a ZnSe nano-pillar, which provides an optical accessible single electon spin qubit.

Pawlis, A. [Department of Physics, University of Paderborn, Warburger Str. 100, 33098 Paderborn, Germany and Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088 (United States); Lischka, K. [Department of Physics, University of Paderborn, Warburger Str. 100, 33098 Paderborn (Germany); Sanaka, K.; Yamamoto, Y. [Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088, USA and National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430 (Japan); Sleiter, D. [Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305-4088 (United States)

2014-05-15T23:59:59.000Z

429

Ab initio calculations of various protonation sites in perfluorodiethyl ether: Models for high temperature lubricant decomposition?  

SciTech Connect (OSTI)

Although perfluoropolyether (PFPE) lubricants have found successful application in spacecraft mechanisms and computer hard drives, there eventual breakdown is irksome, and the mechanism of decomposition is the subject of much scrutiny. However, very little notice is taken of the monomer ethers on which the polymer lubricants are based. Recently, concerted studies of the Lewis base properties of various fluorinated ethers have been performed, both from an experimental and a theoretical viewpoint. As an extension of the theoretical work, this study presents ab initio theoretical consideration of the multiple potential basic sites within perfluorodiethyl ether, (CF{sub 3}CF{sub 2}){sub 2}O, by way of the proton affinity of the molecule at various possible protonation sites (i.e., oxygen and fluorine atoms). The results indicate that although protonation at the oxygen is more energetically favored, protonation at the fluorine is not much higher in energy and provides for formation of an excellent leaving group, HF.

Ball, D.W. [Cleveland State Univ., OH (United States). Dept. of Chemistry

1995-04-01T23:59:59.000Z

430

Study of the neutral mesons in Pb-Pb collisions at $\\sqrt{s_{NN}}$ = 2.76 TeV in the ALICE experiment at LHC  

E-Print Network [OSTI]

The $\\pi^{0}$ and $\\eta$ meson production in Pb-Pb collisions at $\\sqrt{s_{NN}}$ = 2.76 TeV is studied with the ALICE experiment at the LHC. The $\\pi^{0}$ invariant yields and nuclear modification factor $R_{\\mbox{AA}}$ are presented here in six centrality classes. The results are a combined measurement using the Photon Conversion Method (PCM) and the PHOS detector, in the transverse momentum range 0.4 $< p_{\\mbox{T}} <$ 12 GeV/$c$. The $\\pi^{0}$ $R_{\\mbox{AA}}$ is studied in different centrality classes and compared with results from experiments at lower energies, both as a function of transverse momentum. The $\\eta$ meson production is studied using the PCM and the EMCal detector. The combination of the individual results will make possible the measurement of the $\\eta$ differential invariant cross section as a function of transverse momentum from 1 to 22 GeV/$c$ in different centrality classes.

Lucia Leardini; for the ALICE Collaboration

2014-12-05T23:59:59.000Z

431

Graphical Abstract 1) base prepared from  

E-Print Network [OSTI]

_____________________________________________ Synthesis of C,N'-linked bis-heterocycles using a deprotometalation-iodination-N-arylation sequence of benzoxazole (10% less). The crude iodides were involved in the N-arylation of pyrrole, indole, carbazole

Paris-Sud XI, Université de

432

I-XE ANALYSES OF TAGISH LAKE MAGNETITE AND MONAHANS HALITE. A. Busfield1 , J. D. Gil-  

E-Print Network [OSTI]

- leases were dominated by iodine-derived xenon (129 Xe/132 Xe > 10 consistently). This sample produced of solar sys- tem history. Acknowledgements: We are grateful to R. Wieler for providing the halite grain

Grossman, Lawrence

433

!""#$%&'()*+,-#.',&"*/'-0*12!*,"*-0#*34'5#* 6,(,5'*7&#'$,(**  

E-Print Network [OSTI]

-'-F*@$ O O OH PO NC ABz O O O O O GiBu O O O ODMT P NONC T tetrazole then iodine O O O PO NC ABz O O O O O

Barthelat, Francois

434

HYDROLOGY AND EROSION IMPACTS OF MINING DERIVED COASTAL SAND DUNES, C H ~ A R A LBAY, CHILE  

E-Print Network [OSTI]

HYDROLOGY AND EROSION IMPACTS OF MINING DERIVED COASTAL SAND DUNES, C H ~ A R A LBAY, CHILE Daniel, nitrates, iodine, and lithium. Some of the gold and silverandallofthemolybdenumareproducedasby- products

435

CX-010652: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

Technetium and Iodine Removal Studies with SuperLig Resin CX(s) Applied: B3.6 Date: 06/26/2013 Location(s): South Carolina Offices(s): Savannah River Operations Office

436

Initial Assessment of the Consolidation of Chalcogels into a Viable Waste Form  

SciTech Connect (OSTI)

This report provides some preliminary data for the consolidation of chalcogen-based aerogels. The chalcogels tested to date at PNNL show great promise as iodine sorbents and preliminary consolidation research shows that they can be melted into a phase-pure glass at moderate temperatures. The preliminary consolidation experiments show that these materials might attack fused quartz so an alternative crucible material will likely need to be used to prevent this. The next steps will be to • Consider melting other chalcogel chemistries, e.g., Sn-Sb-S, Ge-Sn-S chalcogels • Consider melting chalcogels with adsorbed iodine to monitor iodine loss during melting • Optimize the consolidation temperatures to minimize the iodine loss and volatilization

Riley, Brian J.; Lepry, William C.

2012-08-31T23:59:59.000Z

437

Depletion, quantum jumps, and temperature measurements of ??Sr? ions in a linear Paul Trap  

E-Print Network [OSTI]

This thesis describes the design and construction of two laser systems to probe the 674nm transition of ??Sr? ions in a linear Paul trap. The first laser system made use of a molecular transition in Iodine to stabilize the ...

Richerme, Philip J

2006-01-01T23:59:59.000Z

438

Phorochrriii\\rn. und Phofuhiologr. Vol. 29. pp. 439-444. Pergamon Press Ltd. 1979. Printed in Great Britain  

E-Print Network [OSTI]

of the spectroscopy of iodine. nitrogen dioxide, s-tetrazine and various van der Waals molecular complexes molecule like s-tetrazine is effectively "frozen" out giving one of the few highly resolved gas phase

Govindjee

439

PROGRAM & ABSTRACTS 13. DANSKE HAVFORSKERMDE  

E-Print Network [OSTI]

Department, DK-4000 Roskilde 129 I (15.7 Ma) is a naturally occurring radioisotope of iodine. The ratio as A Oceanographic Tracer Xiaolin Hou, H. Dahlgaard, S.P. Nielsen Risø National Laboratory, Radiation Research

440

Centers for Disease Control and Prevention National Center for Environmental Health  

E-Print Network [OSTI]

, Idaho and Oregon; the scientific and academic communities; and the media. This communications plan............................................................................. 18 National Scientific and Academic Communities 12 years of scientific research on the human health effects of iodine-131 released in the 1940s

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Examination of offsite radiological emergency protective measures for nuclear reactor accidents involving core melt  

E-Print Network [OSTI]

Evacuation, sheltering followed by population relocation, and iodine prophylaxis are evaluated as offsite public protective measures in response to nuclear reactor accidents involving core-melt. Evaluations were conducted ...

Aldrich, David C.

1979-01-01T23:59:59.000Z

442

Laser development for laser fusion applications. Research progress report, October 1978-September 1979  

SciTech Connect (OSTI)

During this report period, emphasis has been directed toward the advanced development of the HF, KrF, Se(/sup 1/S)-Se(/sup 3/P), and the chemically pumped iodine laser systems.

Not Available

1980-05-01T23:59:59.000Z

443

Assessing beef hide interventions as a means to reduce carcass contamination  

E-Print Network [OSTI]

following a water wash. Treatments (distilled water, isopropyl alcohol, 3% hydrogen peroxide, 2% L-lactic acid, 1% cetylpyridinium chloride (CPC), and 10% Povidone-iodine) then were applied to each section and sampled for aerobic plate counts (APCs...

Baird, Bridget Elaine

2007-04-25T23:59:59.000Z

444

For Immediate release: 04/12/12 Contact: Ingrid Wright  

E-Print Network [OSTI]

. Hydrogen generators can serve as effective hydrogen storage systems for fuel cells and other applications, hydrogen, and iodine-containing gas species. Oxygen generators can produce more oxygen, show higher

Ward, Karen

445

Water-soluble bodipys: syntheses, derivatization and photophysical studies  

E-Print Network [OSTI]

the fluorine atoms on boron. Evidence for this assignment is 19F NMR showed a quartet for 27, but no peaks at all for 28. Other conditions were also tried to see whether mono-substitution of chloride with cyanide would happen with milder Lewis acids (MgCl2... by the cyanide anion. Thus compound 29 was formed; nothing happened on the carbon bonding with chlorine, even when a stronger Lewis acid, boron trifluoride etherate was used to catalyze the reaction. 19F NMR showed no fluorine existed. Scheme 2...

Li, Lingling

2009-05-15T23:59:59.000Z

446

Zinc oxyfluoride transparent conductor  

DOE Patents [OSTI]

Transparent, electrically conductive and infrared-reflective films of zinc oxyfluoride are produced by chemical vapor deposition from vapor mixtures of zinc, oxygen and fluorine-containing compounds. The substitution of fluorine for some of the oxygen in zinc oxide results in dramatic increases in the electrical conductivity. For example, diethyl zinc, ethyl alcohol and hexafluoropropene vapors are reacted over a glass surface at 400.degree. C. to form a visibly transparent, electrically conductive, infrared reflective and ultraviolet absorptive film of zinc oxyfluoride. Such films are useful in liquid crystal display devices, solar cells, electrochromic absorbers and reflectors, energy-conserving heat mirrors, and antistatic coatings.

Gordon, Roy G. (Cambridge, MA)

1991-02-05T23:59:59.000Z

447

Nuclear waste processing based on FOOF and KrF sub 2  

SciTech Connect (OSTI)

A class of oxygen fluoride compounds and krypton difluoride show great promise in recovering and purifying plutonium and other actinides from nuclear waste and residues. Since 1983, a significant effort has been expended in three main areas of research; one area is the characterization of the reactive species and the fluorination reaction chemistry with various actinides. The second area is to develop efficient production methods for the active chemicals. The third area is actually in demonstrating application of these fluorinating agents to actinides recovery and purification. Substantial progress has been made in all three areas and some of the highlights in their research effort is discussed. 11 refs., 2 figs., 2 tabs.

Kim, K.C.; Blum, T.W.

1991-01-01T23:59:59.000Z

448

Supercritical fluid extraction  

DOE Patents [OSTI]

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

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

1994-01-01T23:59:59.000Z

449

Increasing the creation yield of shallow single defects in diamond by surface plasma treatment  

SciTech Connect (OSTI)

Single Nitrogen-Vacancy (NV) centers in diamond close to the crystal surface are very promising magnetic field sensors with very high sensitivity. Here, we report the enhanced creation of very shallow (less than 3 nm below the diamond surface) NV centers by using fluorine and oxygen plasma treatment. We observe a four fold increase—from 0.11% to about 0.45% in the production yield when the sample surface is terminated with fluorine or oxygen atoms. This effect is explained by the stabilization of the NV's negative charge state which is influenced by the various defects present on the diamond surface.

Osterkamp, Christian; Scharpf, Jochen; Naydenov, Boris; Jelezko, Fedor [Institut für Quantenoptik, Ulm University, Albert Einstein Allee 11, Ulm 89081 (Germany)] [Institut für Quantenoptik, Ulm University, Albert Einstein Allee 11, Ulm 89081 (Germany); Pezzagna, Sebastien; Meijer, Jan [Institut für Experimentelle Physik II, Abteilung Nukleare Festkörperphysik, Universität Leipzig, Linnestraße 5, Leipzig 04103 (Germany)] [Institut für Experimentelle Physik II, Abteilung Nukleare Festkörperphysik, Universität Leipzig, Linnestraße 5, Leipzig 04103 (Germany); Diemant, Thomas; Jürgen Behm, Rolf [Institut für Oberflächenchemie und Katalyse, Ulm University, Albert-Einstein-Allee 47, Ulm 89081 (Germany)] [Institut für Oberflächenchemie und Katalyse, Ulm University, Albert-Einstein-Allee 47, Ulm 89081 (Germany)

2013-11-04T23:59:59.000Z

450

Improved surface adhesion and coverage of perfluoropolyether lubricants following far-UV irradiation  

SciTech Connect (OSTI)

Far-UV treatment of a surface with a thin film of a perfluoropolyether improves adhesion and lowers surface free energy substantially compared to the unirradiated, lubricated surface. With 185-nm radiation, approximately one monolayer can be fixed to surfaces such as amorphous carbon, silica, and gold. These lubricated surfaces become extremely hydrophobic after UV treatment (advancing water contact angle increases about 65{degree} to {ge} 110{degree}) and are not removed by fluorinated solvents. In the absence of far-UV radiation, most perfluoropolyethers show poor adhesion to carbon and are removed easily by rinsing with fluorinated solvents.

Saperstein, D.D. (IBM General Products Div., San Jose, CA (USA)); Lin , L.J. (IBM Research Div., San Jose, CA (USA))

1990-09-01T23:59:59.000Z

451

Nuclear medicine and imaging research (quantitative studies in radiopharmaceutical science)  

SciTech Connect (OSTI)

This report describes three studies aimed at using radiolabeled pharmaceuticals to explore brain function and anatomy. The first section describes the chemical preparation of (F18)fluorinated benzamides (dopamine D-2 receptor tracers), (F18)fluorinated benzazepines (dopamine D-1 receptor tracers), and tissue distribution of (F18)-fluoxetine (serotonin reuptake site tracer). The second section relates pharmacological and behavioral studies of amphetamines. The third section reports on progress made with processing of brain images from CT, MRI and PET/SPECT with regards to brain metabolism of glucose during mental tasks.

Cooper, M.; Beck, R.N.

1992-06-01T23:59:59.000Z

452

Nuclear medicine and imaging research (quantitative studies in radiopharmaceutical science). Progress report, January 1, 1992--December 31, 1992  

SciTech Connect (OSTI)

This report describes three studies aimed at using radiolabeled pharmaceuticals to explore brain function and anatomy. The first section describes the chemical preparation of [F18]fluorinated benzamides (dopamine D-2 receptor tracers), [F18]fluorinated benzazepines (dopamine D-1 receptor tracers), and tissue distribution of [F18]-fluoxetine (serotonin reuptake site tracer). The second section relates pharmacological and behavioral studies of amphetamines. The third section reports on progress made with processing of brain images from CT, MRI and PET/SPECT with regards to brain metabolism of glucose during mental tasks.

Cooper, M.; Beck, R.N.

1992-06-01T23:59:59.000Z

453

Task-based strategy for optimized contrast enhanced breast imaging: Analysis of six imaging techniques for mammography and tomosynthesis  

SciTech Connect (OSTI)

Purpose: The use of contrast agents in breast imaging has the capability of enhancing nodule detectability and providing physiological information. Accordingly, there has been a growing trend toward using iodine as a contrast medium in digital mammography (DM) and digital breast tomosynthesis (DBT). Widespread use raises concerns about the best way to use iodine in DM and DBT, and thus a comparison is necessary to evaluate typical iodine-enhanced imaging methods. This study used a task-based observer model to determine the optimal imaging approach by analyzing six imaging paradigms in terms of their ability to resolve iodine at a given dose: unsubtracted mammography and tomosynthesis, temporal subtraction mammography and tomosynthesis, and dual energy subtraction mammography and tomosynthesis. Methods: Imaging performance was characterized using a detectability index d{sup ?}, derived from the system task transfer function (TTF), an imaging task, iodine signal difference, and the noise power spectrum (NPS). The task modeled a 10 mm diameter lesion containing iodine concentrations between 2.1 mg/cc and 8.6 mg/cc. TTF was obtained using an edge phantom, and the NPS was measured over several exposure levels, energies, and target-filter combinations. Using a structured CIRS phantom, d{sup ?} was generated as a function of dose and iodine concentration. Results: For all iodine concentrations and dose, temporal subtraction techniques for mammography and tomosynthesis yielded the highest d{sup ?}, while dual energy techniques for both modalities demonstrated the next best performance. Unsubtracted imaging resulted in the lowest d{sup ?} values for both modalities, with unsubtracted mammography performing the worst out of all six paradigms. Conclusions: At any dose, temporal subtraction imaging provides the greatest detectability, with temporally subtracted DBT performing the highest. The authors attribute the successful performance to excellent cancellation of inplane structures and improved signal difference in the lesion.

Ikejimba, Lynda C., E-mail: lci@duke.edu [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 and Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Kiarashi, Nooshin [Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 and Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27705 (United States)] [Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 and Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27705 (United States); Ghate, Sujata V. [Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States)] [Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Samei, Ehsan [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States) [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27705 (United States); Department of Physics, Duke University, Durham, North Carolina 27705 (United States); Department of Biomedical Engineering, Duke University, Durham, North Carolina 27705 (United States); Lo, Joseph Y. [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States) [Medical Physics Graduate Program, Duke University, Durham, North Carolina 27705 (United States); Carl E. Ravin Advanced Imaging Laboratories, Department of Radiology, Duke University Medical Center, Durham, North Carolina 27705 (United States); Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27705 (United States); Department of Biomedical Engineering, Duke University, Durham, North Carolina 27705 (United States)

2014-06-15T23:59:59.000Z

454

Evidence for a receptor for ceruloplasmin on chick aortic and heart cell membranes  

E-Print Network [OSTI]

OF TABLES LIST OF FIGURES. INTRODUCTION MATERIALS AND METHODS. page Vl Vl1 Viii 1. X Animals Preparation of Aortic and Heart Membranes Purification of Chick Ceruloplasmin Iodination of Ceruloplasmin Binding Studies Purification of Glycoproteins... Preparation of Asialoglycoprotein RESULTS. 7 7 8 9 10 11 12 13 Membrane Preparation. Purification of Chick Ceruloplasmin Iodination of Ceruloplasmin Binding Studies Characterization of the Receptor. DISCUSSION REFERENCES VITA 13 13 22 22...

Stevens, Michael Duane

1982-01-01T23:59:59.000Z

455

Precipitation of impurities in 9-32-0 grade fluid fertilizers  

SciTech Connect (OSTI)

For several years TVA has been studying production of 9-32-0 ammonium polyphosphate suspension produced from ammoniated merchant-grade wet-process orthophosphoric acid. Suspensions containing polyphosphate have an advantage over those that contain only orthophosphate in that they can be stored satisfactorily at much lower temperature. However, the introduction of polyphosphate (pyrophosphate anion) complicates the precipitation of impurities and has yielded inconsistent storage characteristics in 9-32-0 fluid fertilizers. Fluorine also has been shown to affect suspension fertilizer properties. The viscosity of 13-38-0 orthophosphate suspension fertilizers is affected by the atomic ratios F:(Al + Fe + Mg). Addition of fluorine prevents sludges and precipitates in ammonium polyphosphate fertilizer solutions - the proper amount of fluorine is related to the amount of each of the metallic impurities present and also to the fraction of the phosphate present as pyrophosphate. Incorporation of polyphosphate or fluorine or both has been shown to have positive effects on ammoniated wet-process phosphoric acid (WPPA), but they do not report the solubility relationships of the cation impurities (Fe, Al, Mg, and Ca) with respect to the anion constituents (PO/sub 4/, P/sub 2/O/sub 7/, and F). Therefore, a factorial study was developed to determine the solubility relationships of the precipitated metal impurities encountered in 9-32-0 fluid fertilizers. 10 refs., 1 fig., 20 tabs.

Dillard, E.F.; Scheib, R.M.; Greenwell, B.E.

1986-01-01T23:59:59.000Z

456

Author's personal copy Mixed crystalline films of co-evaporated hydrogen-and  

E-Print Network [OSTI]

Author's personal copy Mixed crystalline films of co-evaporated hydrogen- and fluorine-terminated phthalocyanines and their application in photovoltaic devices Andreas Opitz a,*, Bernhard Ecker a , Julia Wagner Photovoltaic cells a b s t r a c t Blends of organic electron and hole conductive materials are widely used

Schreiber, Frank

457

Fuel cell electrolyte membrane with basic polymer  

DOE Patents [OSTI]

The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.

Larson, James M.; Pham, Phat T.; Frey, Matthew H.; Hamrock, Steven J.; Haugen, Gregory M.; Lamanna, William M.

2012-12-04T23:59:59.000Z

458

Fuel cell electrolyte membrane with basic polymer  

DOE Patents [OSTI]

The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.

Larson, James M. (Saint Paul, MN); Pham, Phat T. (Little Canada, MN); Frey, Matthew H. (Cottage Grove, MN); Hamrock, Steven J. (Stillwater, MN); Haugen, Gregory M. (Edina, MN); Lamanna, William M. (Stillwater, MN)

2010-11-23T23:59:59.000Z

459

Electrochemical and Solid-State Letters, 2 (10) 519-521 (1999) 519 S1099-0062(99)06-042-3 CCC: $7.00 The Electrochemical Society, Inc.  

E-Print Network [OSTI]

for sustained fluorine evolution. Transport of bifluoride ion to catalyst-coated ELAT or membrane electrode catalyst binder and membrane. The anode was flooded with KF·xHF molten salt to circumvent transport/cm. Fortunately, perfluorinated ionomer membranes conduct ions when swollen with a variety of nonaqueous solvents

Anderson, Timothy J.

460

Method of bonding diamonds in a matrix and articles thus produced  

DOE Patents [OSTI]

By fluorinating diamond grit, the grit may be readily bonded into a fluorocarbon resin matrix. The matrix is formed by simple hot pressing techniques. Diamond grinding wheels may advantageously be manufactured using such a matrix. Teflon fluorocarbon resins are particularly well suited for using in forming the matrix.

Taylor, G.W.

1981-01-27T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Method for producing microporous metal bodies  

DOE Patents [OSTI]

Tungsten is vapor-deposited by hydrogen reduction of tungsten hexafluoride (WF.sub.6) to produce a tungsten body having from 40 to 100 ppm fluorine. The tungsten is then heated under vacuum to produce grain boundary porosity for a sufficient period of time to allow the pores along the grain boundaries to become interconnected.

Danko, Joseph C. (Danville, CA)

1982-01-01T23:59:59.000Z

462

List of Publications of Professor Ramanath Cowsik 1. Neutral Pion Production by 17 GeV Negative Pions in Carbon.  

E-Print Network [OSTI]

, and R. P. Verma, Phys. Rev. 158, 1238 (1967). 8. Lithium, Beryllium, Boron and Fluorine Nuclei in Cosmic. Phys. 46, S646 (1968). 10. Properties of Air Showers and the Nature of the Primary Cosmic Rays Spectrum. R. Cowsik, ibid. 46, S142 (1968). 11. Cosmic Ray Interactions. R. Cowsik, Ph.D. Thesis, Bombay

463

Conformational Properties of Poly(vinylidene fluoride). A Quantum Chemistry Study of Model Compounds  

E-Print Network [OSTI]

Conformational Properties of Poly(vinylidene fluoride). A Quantum Chemistry Study of Model of the conformers of HFH resembling crystalline polymorphs of PVDF, indicating that intermolecular interactions unfavorable second-order interactions between fluorine atoms occur in -CH2- centered t+t+ sequences and

Utah, University of

464

Subscriber access provided by UNIV OSNABRUECK The Journal of Physical Chemistry C is published by the American Chemical  

E-Print Network [OSTI]

by solar light. Doping with a foreign element is a promising method to sensitize a wide bandgap by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Article Evidence for Vacancy photocatalyst, e.g., TiO2, with visible light.5 Nonmetal- lic dopants including carbon,6 nitrogen,7 fluorine,8

Kühnle, Angelika

465

Physics Division ESH Bulletin 03-2 COMPRESSED GASES SECURITY ALERT  

E-Print Network [OSTI]

and the environment. We urge you to review your procedures in the following areas: 1. Secure storage (this means Ethylamine Chemicals of Concern Ethylene oxide Fluorine Germane Germanium tetrafluoride Hydrogen bromide Hydrogen chloride Hydrogen cyanide Hydrogen fluoride Hydrogen iodide Hydrogen selenide Hydrogen sulfide

466

Hydrothermally grown nanostructured WO films and their electrochromic characteristics  

E-Print Network [OSTI]

Hydrothermally grown nanostructured WO 3 films and their electrochromic characteristics.1088/0022-3727/43/28/285501 Hydrothermally grown nanostructured WO3 films and their electrochromic characteristics Zhihui Jiao1 , Xiao Wei and their electrochromic characteristics. Plate-like monoclinic WO3 nanostructures were grown directly on fluorine

Demir, Hilmi Volkan

467

22nd European Photovoltaic Solar Energy Conference, Fiera Milano, Italy, 3-7 September 2007 Version: 30 August 2007  

E-Print Network [OSTI]

22nd European Photovoltaic Solar Energy Conference, Fiera Milano, Italy, 3-7 September 2007 Version: 30 August 2007 FLUORINATED GREENHOUSE GASES IN PHOTOVOLTAIC MODULE MANUFACTURING: POTENTIAL EMISSIONS, The Netherlands V.M. Fthenakis, vmf@bnl.gov, Phone +1 631 344 2830, National Photovoltaic EH&S Research Center

468

Application of Vertically-Aligned SWNT Films for the Counter Electrode of Dye-Sensitized Solar Cells  

E-Print Network [OSTI]

Application of Vertically-Aligned SWNT Films for the Counter Electrode of Dye-Sensitized Solar a solar cell in which VA-SWNT films were used for a CE, in place of conventional sputtered Pt on fluorine to use vertically aligned single-walled carbon nanotube (VA-SWNT) films [1] synthesized by ACCVD method

Maruyama, Shigeo

469

Subscriber access provided by Iowa State University | Library The Journal of Physical Chemistry C is published by the American Chemical  

E-Print Network [OSTI]

ordered TiO2 nanotube arrays were fabricated via electrochemical anodization of high purity Ti foil and Ti was observed. In nonaqueous electrolyte, the electrolyte temperature markedly affected the TiO2 nanotube structure formation in Ti via electrochemical anodization in fluorine containing electrolytes in 1999

Lin, Zhiqun

470

Z .Sensors and Actuators B 65 2000 270272 www.elsevier.nlrlocatersensorb  

E-Print Network [OSTI]

Z .Sensors and Actuators B 65 2000 270­272 www.elsevier.nlrlocatersensorb Semiconductor sensors For the detection of fluorine, two different preparation methods for semiconductor gas sensors were developed.01 and 10 ppm type II . The sensitivity of Z Z ..type I sensors is about 116 mVrlg p F . It is possible

Moritz, Werner

471

-RIS-M-2210 KVANE -A KVANEFJELD DRILL CORE DATABASE  

E-Print Network [OSTI]

samples was 5663. All 5663 samples were analysed for 0, Th and K by gamma-ray spectrometry (GAM analytical work on the 1977 samples was done on crushed coresplits. In addition to the gamma-ray spectrometry different radioactive sources (EDX-CD and EDX-PLU), optical spectrometry for Li and Be (OP-SPEC), fluorine

472

ORIGINAL PAPER David Dolejs Don R. Baker  

E-Print Network [OSTI]

and associated hydrothermal processes. The interaction of fluorine with aluminosilicate melts and solids corre, the hydrothermal evolution of peraluminous granitic and greisen systems is controlled by white mica granitic rocks; its abundance in hydrothermal rocks is due to: (i) closed- system defluorination of topaz

Long, Bernard

473

Extraction of metals using supercritical fluid and chelate forming legand  

DOE Patents [OSTI]

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

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

1998-01-01T23:59:59.000Z

474

Extraction of metals using supercritical fluid and chelate forming ligand  

DOE Patents [OSTI]

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

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

1998-03-24T23:59:59.000Z

475

Fluid extraction  

DOE Patents [OSTI]

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

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

1999-01-01T23:59:59.000Z

476

Vanadium-pumped titanium x-ray laser  

DOE Patents [OSTI]

A resonantly photo-pumped x-ray laser is formed of a vanadium and titanium foil combination that is driven by two beams of intense line focused optical laser radiation. Ground state neon-like titanium ions are resonantly photo-pumped by line emission from fluorine-like vanadium ions. 4 figs.

Nilsen, J.

1992-05-26T23:59:59.000Z

477

Vanadium-pumped titanium x-ray laser  

DOE Patents [OSTI]

A resonantly photo-pumped x-ray laser (10) is formed of a vanadium (12) and titanium (14) foil combination (16) that is driven by two beams (18, 20) of intense line focused (22, 24) optical laser radiation. Ground state neon-like titanium ions (34) are resonantly photo-pumped by line emission from fluorine-like vanadium ions (32).

Nilsen, Joseph (Livermore, CA)

1992-01-01T23:59:59.000Z

478

Accelerator driven production of tritium: target and blanket design  

E-Print Network [OSTI]

investigated. The target designs in the heterogeneous systems were 1 / liquid lead, and 2/ layers of solid lead plates cooled by heavy water. The tritium breeding blanket assemblies contained either lithium oxide or molten fluorine salt with or without UF4...

Ragusa, Jean Concetto

1996-01-01T23:59:59.000Z

479

The role of lattice excitation in Si etching  

E-Print Network [OSTI]

The chemistries of fluorine, F?, and xenon difluoride, XeF?, with clean Si are basically the same, while their chemistries diverge dramatically past I ML F coverage. With a clean Si surface, F? and XeF? react utilizing an ...

Blair, Michael Ryan

2014-01-01T23:59:59.000Z

480

Sensors and Actuators B 49 (1998) 133138 High temperature semiconductor sensor for the detection of  

E-Print Network [OSTI]

was smaller than expected but the increased desorption rate and a high signal to noise ratio improved the environment. Electrochemical cells for the detection of fluorine are produced by several companies (e.g. [1 sensor promises an im- provement of the properties of the sensing structure because the electrochemical

Moritz, Werner

Note: This page contains sample records for the topic "fluorine iodine phos" 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

Experimental determination of CePO4 and YPO4 solubilities in H2ONaF at 800C and 1 GPa: implications for rare earth  

E-Print Network [OSTI]

: implications for rare earth element transport in high-grade metamorphic fluids P. TROPPER1 , 2 , C. E. MANNING2. They host signifi- cant rare earth elements (REE) and are useful for geochronology and geothermometry, so that Y, and by extension heavy rare earth elements (HREE), can be fractionated from LREE in fluorine

Manning, Craig

482

EMT and EHSC 2012 RESEARCH DAY PROGRAM 8:00 -8:30 Registration & Poster Setup  

E-Print Network [OSTI]

Simonich Environmental Chemistry "What Goes Around Comes Around ­ Chasing Air Pollution in the Western U-Madison " Linking Recruitment Failure of Great Lakes Lake Trout to Dioxin Exposure". 11:30 - 1:00 Lunch:00-1:15 EMT Trainee Lecture Will Backe Analysis of new and legacy fluorinated contaminants in groundwater

Tullos, Desiree

483

Nuclear spin relaxation in a vinylidene fluoride and trifluoroethylene copolymer (70/30).  

E-Print Network [OSTI]

583 Nuclear spin relaxation in a vinylidene fluoride and trifluoroethylene copolymer (70/30). II orientations dans les chaînes. Abstract. 2014 Measurements of the hydrogen and fluorine nuclear spin-lattice relaxation times T1 from 6 to 300 MHz and T103C1 from 3 to 100 kHz have been performed at different

Boyer, Edmond

484

AUTOMATIC HOT SPOT DETECTION AND SEGMENTATION IN WHOLE BODY FDG-PET IMAGES Haiying Guan1  

E-Print Network [OSTI]

AUTOMATIC HOT SPOT DETECTION AND SEGMENTATION IN WHOLE BODY FDG-PET IMAGES Haiying Guan1 , Toshiro a system for automatic hot spots detection and segmentation in whole body FDG-PET images. The main in clinical PET images. 1.INTRODUCTION Positron emission tomography (PET) using fluorine-18 de- oxyglucose

California at Santa Barbara, University of

485

Spent nuclear fuel recycling with plasma reduction and etching  

DOE Patents [OSTI]

A method of extracting uranium from spent nuclear fuel (SNF) particles is disclosed. Spent nuclear fuel (SNF) (containing oxides of uranium, oxides of fission products (FP) and oxides of transuranic (TRU) elements (including plutonium)) are subjected to a hydrogen plasma and a fluorine plasma. The hydrogen plasma reduces the uranium and plutonium oxides from their oxide state. The fluorine plasma etches the SNF metals to form UF6 and PuF4. During subjection of the SNF particles to the fluorine plasma, the temperature is maintained in the range of 1200-2000 deg K to: a) allow any PuF6 (gas) that is formed to decompose back to PuF4 (solid), and b) to maintain stability of the UF6. Uranium (in the form of gaseous UF6) is easily extracted and separated from the plutonium (in the form of solid PuF4). The use of plasmas instead of high temperature reactors or flames mitigates the high temperature corrosive atmosphere and the production of PuF6 (as a final product). Use of plasmas provide faster reaction rates, greater control over the individual electron and ion temperatures, and allow the use of CF4 or NF3 as the fluorine sources instead of F2 or HF.

Kim, Yong Ho

2012-06-05T23:59:59.000Z

486

C)  

Office of Legacy Management (LM)

fluorination o f U P 4 s a m p l e . -- --- ---- i--l-f-' - I N ? 9 8 0 3 Analytical Chemistry Sectisn: -- D a t e R e c e i v e d '7 - 1 2 - 5 6 b y b b - D a t e R e p o t i e d...

487

Electrolytes - Advanced Electrolyte and Electrolyte Additives  

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

Co 13 O 2 , LiNi 0.5 Mn 1.5 O 4 Anode: MCMB, LTO Electrolyte-1: 1.2M LiPF 6 ECEMC 37 with or without additive Electrolyte-2: fully or partially fluorinated...

488

JOURNAL OF APPLIED ELECTROCHEMISTRY 19 (1989) 475-484 REVIEWS OF APPLIED ELECTROCHEMISTRY 19  

E-Print Network [OSTI]

-temperature thermodynamic investigations on metallic fluorides, carbides, borides, phosphides, sulphides, alloys cells in alloy studies is the fact that the transition metal fluorides exhibit much smaller non in the case of alloy character- ization. Secondly, the solubility of fluorine in metals and alloys

Azad, Abdul-Majeed

489

NEUTRON LIFETIME EXPERIMENT BASED ON AN `ACCORDION-LIKE' UCN STORAGE VOLUME COATED WITH `LOW TEMPERATURE FOMBLIN'  

E-Print Network [OSTI]

, Cambridge, MA, USA; 2 University of Rhode Island, Kingston, RI, USA; 3 Joint Institute for Nuclear Research-fluorinated polymer, `Low Temperature Fomblin', has been tested as a wall coating in an ultracold neutron (UCN of an accordion-like storage vessel. In this system, the surface area and its distribution over height remain

Steyerl, Albert

490

Fabrication of Transparent-Conducting-Oxide-Coated Inverse Opals as Mesostructured Architectures for Electrocatalysis Applications: A  

E-Print Network [OSTI]

-energy conversion.1-9 For example, high-surface-area silica-based aerogels can be used as scaffolds for constructing), display both good light-harvesting and good charge collection.5-7,10 Since SiO2 aerogels are insulating of making high-surface-area electrodes (e.g., aerogels) directly from conducting materials (e.g., fluorine

491

Method for converting asbestos to non-carcinogenic compounds  

DOE Patents [OSTI]

Hazardous and carcinogenic asbestos waste characterized by a crystalline fibrous structure is transformed into non-carcinogenic, relatively nonhazardous, and non-crystalline solid compounds and gaseous compounds which have commercial utilization. The asbestos waste is so transformed by the complete fluorination of the crystalline fibrous silicate mineral defining the asbestos.

Selby, Thomas W. (Kingston, TN)

1996-01-01T23:59:59.000Z

492

Method for converting asbestos to non-carcinogenic compounds  

DOE Patents [OSTI]

Hazardous and carcinogenic asbestos waste characterized by a crystalline fibrous structure is transformed into non-carcinogenic, relatively nonhazardous, and non-crystalline solid compounds and gaseous compounds which have commercial utilization. The asbestos waste is so transformed by the complete fluorination of the crystalline fibrous silicate mineral defining the asbestos. 7 figs.

Selby, T.W.

1996-08-06T23:59:59.000Z

493

157 nm Pellicles for Photolithography: Mechanistic Investigation of the Deep UV Photolysis of Fluorocarbons.  

E-Print Network [OSTI]

of Fluorocarbons. Kwangjoo Leea , Steffen Jockuscha , Nicholas J. Turro*a , Roger H. Frenchb , Robert C. Whelandb and photodarkening of fluorinated polymers, mechanistic studies on the photolysis of liquid model fluorocarbons of the fluorocarbons were proposed, where Rydberg excited states are involved. Keywords: pellicles, fluorocarbon

Rollins, Andrew M.

494

Published: March 08, 2011 r 2011 American Chemical Society 1597 dx.doi.org/10.1021/ef101522w |Energy Fuels 2011, 25, 15971604  

E-Print Network [OSTI]

Architecture of Asphaltenes Hassan Sabbah, Amy L. Morrow, Andrew E. Pomerantz, and Richard N. Zare spectra of 23 model compounds and 2 petroleum asphaltene samples are presented. These experiments involved with the 157 nm output of a fluorine excimer laser. The average molecular weight of the asphaltene samples

Zare, Richard N.

495

Complete Phase I Tests As Described in the Multi-lab Test Plan for the Evaluation of CH3I Adsorption on AgZ  

SciTech Connect (OSTI)

Silver-exchanged mordenite (AgZ) has been identified as a potential sorbent for iodine present in the off-gas streams of a used nuclear fuel reprocessing facility. In such a facility, both elemental and organic forms of iodine are released from the dissolver in gaseous form. These species of iodine must be captured with high efficiency for a facility to avoid radioactive iodine release above regulatory limits in the gaseous effluent of the plant. Studies completed at Idaho National Laboratory (INL) examined the adsorption of organic iodine in the form of CH3I by AgZ. Upon breakthrough of the feed gas through the sorbent bed, elemental iodine was observed in the effluent stream, despite the fact that the only source of iodine in the system was the CH3I in the feed gas.1 This behavior does not appear to have been reported previously nor has it been independently confirmed. Thus, as a result of these prior studies, multiple knowledge gaps relating to the adsorption of CH3I by AgZ were identified, and a multi-lab test plan, including Oak Ridge National Laboratory (ORNL), INL, Pacific Northwest National Laboratory (PNNL), and Sandia National Laboratories, was formulated to address each in a systematic way.2 For this report, the scope of work for ORNL was further narrowed to three thin-bed experiments that would characterize CH3I adsorption onto AgZ in the presence of water, NO, and NO2. Completion of these three-thin bed experiments demonstrated that organic iodine in the form of CH3I was adsorbed by reduced silver mordenite (Ag0Z) to a 50% higher loading than that of I2 when adsorbed from a dry air stream. Adsorption curves suggest different adsorption mechanisms for I2 and CH3I. In the presence of NO and NO2 gas, the loading of CH3I onto Ag0Z is suppressed and may be reversible. Further, the presence of NO and NO2 gas appears to oxidize CH3I to I2; this is indicated by an adsorption curve similar to that of I2 on Ag0Z. Finally, the loss of organic iodine loading capacity by Ag0Z in the presence of NOx is unaffected by the addition of water vapor to the gas stream; no marked additional loss in capacity or retention was observed.

Bruffey, S. H. [ORNL; Jubin, R. T. [ORNL

2014-09-30T23:59:59.000Z

496

Silver-Mordenite for Radiologic Gas Capture from Complex Streams: Dual Catalytic CH3I Decomposition and I Confinement  

SciTech Connect (OSTI)

The effective capture and storage of radiological iodine (129I) remains a strong concern for safe nuclear waste storage and safe nuclear energy. Silver-containing mordenite (MOR) is a longstanding benchmark for iodine capture. In nuclear fuel reprocessing scenarios, complex gas streams will be present and the need for high selectivity of all iodine containing compounds is of the utmost importance for safety and the environment. In particular, a molecular level understanding of the sorption of organic iodine compounds is not well understood. Here we probe the structure and distribution of methyl iodide sorbed by silver-containing MOR using a combination of crystallographic and materials characterization techniques including: infrared spectroscopy, thermogravimetric analysis with mass spectrometry, Micro-X-ray Fluorescence, powder X-ray diffraction analysis, and pair distribution function analysis. The iodine is captured inside the MOR pore in the form of AgI nanoparticles, that is consistent with the pores sizes of the MOR, indicating that the molecule is both physically and chemically captured in the Ag-MOR. The organic component is surface catalyzed by the zeolite via the formation of Surface Methoxy Species (SMS) that result in downstream organics of dimethyl ether and methanol formation.

Tina M. Nenoff; Mark Rodriguez; Nick Soelberg; Karena W. Chapman

2014-12-01T23:59:59.000Z

497

Chemical aspects of pellet-cladding interaction in light water reactor fuel elements  

SciTech Connect (OSTI)

In contrast to the extensive literature on the mechanical aspects of pellet-cladding interaction (PCI) in light water reactor fuel elements, the chemical features of this phenomenon are so poorly understood that there is still disagreement concerning the chemical agent responsible. Since the earliest work by Rosenbaum, Davies and Pon, laboratory and in-reactor experiments designed to elucidate the mechanism of PCI fuel rod failures have concentrated almost exclusively on iodine. The assumption that this is the reponsible chemical agent is contained in models of PCI which have been constructed for incorporation into fuel performance codes. The evidence implicating iodine is circumstantial, being based primarily upon the volatility and significant fission yield of this element and on the microstructural similarity of the failed Zircaloy specimens exposed to iodine in laboratory stress corrosion cracking (SCC) tests to cladding failures by PCI.

Olander, D.R.

1982-01-01T23:59:59.000Z

498

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents [OSTI]

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na.sub.4 B.sub.12 I.sub.11 SSB.sub.12 I.sub.11, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy.

Miura, Michiko (Hampton Bays, NY); Slatkin, Daniel N. (Southold, NY)

1997-03-18T23:59:59.000Z

499

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents [OSTI]

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na{sub 4}B{sub 12}I{sub 11}SSB{sub 12}I{sub 11}, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy. 1 fig.

Miura, M.; Slatkin, D.N.

1997-03-18T23:59:59.000Z

500

Halogenated sulfidohydroboranes for nuclear medicine and boron neutron capture therapy  

DOE Patents [OSTI]

A method for performing boron neutron capture therapy for the treatment of tumors is disclosed. The method includes administering to a patient an iodinated sulfidohydroborane, a boron-10-containing compound. The site of the tumor is localized by visualizing the increased concentration of the iodine labelled compound at the tumor. The targeted tumor is then irradiated with a beam of neutrons having an energy distribution effective for neutron capture. Destruction of the tumor occurs due to high LET particle irradiation of the tissue secondary to the incident neutrons being captured by the boron-10 nuclei. Iodinated sulfidohydroboranes are disclosed which are especially suitable for the method of the invention. In a preferred embodiment, a compound having the formula Na.sub.4 B.sub.12 I.sub.11 SSB.sub.12 I.sub.11, or another pharmaceutically acceptable salt of the compound, may be administered to a cancer patient for boron neutron capture therapy.

Miura, Michiko (Hampton Bays, NY); Slatkin, Daniel N. (Southold, NY)

1995-10-03T23:59:59.000Z