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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

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

2

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

3

Tunable Electrochemical Properties of Fluorinated Graphene. ...  

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

Tunable Electrochemical Properties of Fluorinated Graphene. Tunable Electrochemical Properties of Fluorinated Graphene. Abstract: The structural and electrochemical properties of...

4

It's Elemental - The Element Fluorine  

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

Oxygen Oxygen Previous Element (Oxygen) The Periodic Table of Elements Next Element (Neon) Neon The Element Fluorine [Click for Isotope Data] 9 F Fluorine 18.9984032 Atomic Number: 9 Atomic Weight: 18.9984032 Melting Point: 53.53 K (-219.62°C or -363.32°F) Boiling Point: 85.03 K (-188.12°C or -306.62°F) Density: 0.001696 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 17 Group Name: Halogen What's in a name? From the Latin and French words for flow, fluere. Say what? Fluorine is pronounced as FLU-eh-reen or as FLU-eh-rin. History and Uses: Fluorine is the most reactive of all elements and no chemical substance is capable of freeing fluorine from any of its compounds. For this reason, fluorine does not occur free in nature and was extremely difficult for

5

Thermal properties of fluorinated graphene  

Science Journals Connector (OSTI)

Large-scale atomistic simulations using the reactive force field approach are implemented to investigate the thermomechanical properties of fluorinated graphene (FG). A set of parameters for the reactive force field potential optimized to reproduce key quantum mechanical properties of relevant carbon-fluorine cluster systems are presented. Molecular dynamics simulations are used to investigate the thermal rippling behavior of FG and its mechanical properties and compare them with graphene, graphane and a sheet of boron nitride. The mean square value of the height fluctuations ?h2? and the height-height correlation function H(q) for different system sizes and temperatures show that FG is an unrippled system in contrast to the thermal rippling behavior of graphene. The effective Young's modulus of a flake of fluorinated graphene is obtained to be 273 N/m and 250 N/m for a flake of FG under uniaxial strain along armchair and zigzag directions, respectively.

Sandeep Kumar Singh; S. Goverapet Srinivasan; M. Neek-Amal; S. Costamagna; Adri C. T. van Duin; F. M. Peeters

2013-03-29T23:59:59.000Z

6

Iodine in Texas Soils.  

E-Print Network (OSTI)

in order of the increasing average iodine content of their s, the divisions rank as follows, beginning with the lowest: ~tral Basin 1.7 parts per million, East Texas Timber Country Gulf Coast Prairie 3.5, High Plains 3.9, West Cross Timbers to 5..... ................................. .......................................... Gulf Coast Pralrle.. Elackland Pralrles. .......................................... ........................................... Rio .Grande Plain. ............................................... Roll~ng Pla~ns High Pla...

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

1939-01-01T23:59:59.000Z

7

Iodine content of food groups  

Science Journals Connector (OSTI)

The iodine content of several kinds of foods representing different product groups available on the Swiss market was analyzed by isotope dilution inductively coupled plasma mass spectrometry using the enriched long-lived nuclide 129I. Considerable variations in levels of iodine between single foodstuffs within food groups were found, which also applied for levels in different food groups. The contribution of the food groups to the average daily iodine intake for the Swiss population was estimated from recent food consumption data. Bread and milk were identified as significant sources of iodine in the Swiss diet as they contributed 58 and 29?g/day, respectively. The estimated contribution of all basic food groups to the per capita intake of iodine was approximately 140?g/day, which was somewhat below the amount recognized for adequate nutrition (150?g/day). In view of the additional consumption of iodized kitchen salt, an average of 140?g/day underestimates the actual iodine intake.

M. Haldimann; A. Alt; A. Blanc; K. Blondeau

2005-01-01T23:59:59.000Z

8

Copolymers of fluorinated polydienes and sulfonated polystyrene  

DOE Patents (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

9

Successful fluorine-containing herbicide agrochemicals  

Science Journals Connector (OSTI)

Abstract Of the herbicides licensed worldwide, currently around 25% contain at least one fluorine atom and many contain multiple fluorines in the form of difluoro- and trifluoromethyl groups. Fluorine-containing compounds have made a significant contribution to the development of products for the agrochemicals industry and many organofluorine entities have found stable market positions. In this review we highlight the most important fluorinated herbicides in terms of their global use. The compounds are grouped by mode of action. A synthesis route is described for each compound although the synthesis presented may not actually be the industrial process.

Tomoya Fujiwara; David OHagan

2014-01-01T23:59:59.000Z

10

Energetics of Defects on Graphene through Fluorination. | EMSL  

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

Defects on Graphene through Fluorination. Energetics of Defects on Graphene through Fluorination. Abstract: In the present study, we used FGS5 as the substrate and implemented...

11

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

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

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...

12

Energetics of Defects on Graphene through Fluorination  

SciTech Connect

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

13

Tunable Electrochemical Properties of Fluorinated Graphene  

SciTech Connect

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

14

Fluorine Containing Diazines. Synthesis and Properties  

Science Journals Connector (OSTI)

This review deals with general and significant developments in the area of chemistry of fluorinated pyrimidine, pyrazine and pyridazine. Diazines bearing fluoro or ?-fluoroalkyl substituent at carbon atoms of ...

Dmitriy M. Volochnyuk

2014-01-01T23:59:59.000Z

15

Fluorinated carbon blacks : influence of the morphology of the starting material on the fluorination mechanism  

E-Print Network (OSTI)

, n° 2, p. 217-220. Abstract : The effect of fluorination, using CF4 r.f. plasmas, has been studied, we used CF4 r.f. plasma for the fluorination of carbon blacks and investigated, by X in r.f. plasma conditions was carried out in a SE-80 barrel reactor (Plasma Tech. System). CF4 gas

Paris-Sud XI, Université de

16

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

17

It's Elemental - The Element Iodine  

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

Tellurium Tellurium Previous Element (Tellurium) The Periodic Table of Elements Next Element (Xenon) Xenon The Element Iodine [Click for Isotope Data] 53 I Iodine 126.90447 Atomic Number: 53 Atomic Weight: 126.90447 Melting Point: 386.85 K (113.7°C or 236.7°F) Boiling Point: 457.55 K (184.4°C or 364.0°F) Density: 4.93 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Non-metal Period Number: 5 Group Number: 17 Group Name: Halogen What's in a name? From the Greek word for violet, iodes. Say what? Iodine is pronounced as EYE-eh-dine or as EYE-eh-din. History and Uses: Iodine was discovered by the French chemist Barnard Courtois in 1811. Courtois was extracting sodium and potassium compounds from seaweed ash. Once these compounds were removed, he added sulfuric acid (H2SO4) to

18

Fluorination of a depleted uranium-plutonium-nitride fuel with elemental fluorine  

Science Journals Connector (OSTI)

A physical and a mathematical model have been developed to describe the physicochemical process of torch fluorination of an uranium-plutonium-nitride fuel. An algorithm for calculating the velocity, temperatur...

V. A. Karelin; V. N. Brendakov; M. V. Popadeikin

19

Efficient Fluorinating Agent through Topochemical Fluorination of CoFe Layered Double Hydroxides  

Science Journals Connector (OSTI)

In the fields of pharmacology, agrochemicals, and functionalized materials, fully or partially fluorinated compounds exhibit unique chemical, biological, and physical properties. ... Unlike direct fluorination, which gives mainly a broad and continuous distribution of the species with fluorine content centered between C60F36 and C60F48, compounds having specific compositions C60Fx, x = 2, 16, 18, 20, or 36, were prepared and isolated with binary metal fluorides (AgF, AgF2, MnF3, CoF3, CeF4, or TbF4), some complex salts (K2PtF6 or K3CoF6), and a MnF3KF mixture. ... (13) The FA candidate should then possess an open structure (large edge-surface), an appropriate relative metal composition, and sites reactive toward fluorination at low temperatures. ...

Nicolas Louvain; Jrmy Peyroux; Marc Dubois; Wikenson Simond; Fabrice Leroux

2013-12-23T23:59:59.000Z

20

Optical Spectrum of Partially and Fully Fluorinated Graphene  

E-Print Network (OSTI)

In this letter we study the electronic structures and optical properties of partially and fully fluorinated graphene by a combination of \\abinitio\\ \\G0W0\\ calculations and large-scale multi-orbital tight-binding simulations. We find that for partially fluorinated graphene, the appearance of paired fluorine atoms is more favorable than unpaired atoms. We also show that different types of structural disorder, such as carbon vacancies, fluorine vacancies, fluorine vacancy-clusters and fluorine armchair- and zigzag-clusters, will introduce different types of midgap states and extra excitations within the optical gap. Furthermore we argue that the local formation of $sp^3$ bonds upon fluorination can be distinguished from other disorder inducing mechanisms which do not destroy the $sp^2$ hybrid orbitals by measuring the polarization rotation of passing polarized light.

Yuan, Shengjun; Schulz, Alexander; Wehling, Tim O; Katsnelson, Mikhail I

2014-01-01T23:59:59.000Z

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

MSIV leakage airborne iodine transport  

SciTech Connect

Gaseous iodine deposits on surfaces exposed to vapors. Basic chemical and physical principles predict this behavior, and several laboratory and in-plant measurements demonstrate the characteristic. An empirical model was developed that describes the deposition, resuspension, and transformation of airborne radioiodine molecular species as a stream containing these forms moves along its pathway. The model uses a data base of measured values of deposition and resuspension rates in its application and describes the conversion of the more reactive inorganic iodine species I[sub 2] to the less reactive organic species CH[sub 3]I as the iodine deposits and resuspends along the path. It also considers radioactive decay and chemical surface bonding during residence on surfaces. For the 8-day [sup 131]I, decay during the airborne portion of the transport is negligible. Verification of the model included measurement tests of long gaseous-activity sampling lines of different diameters, operated at different flow rates and stream temperatures. The model was applied to the streams at a boiling water reactor nuclear power plant to describe the transport through leaking main steam isolation valves (MSIVs), following a loss-of-coolant accident.

Cline, J.E. (Cline Associates Inc., Rockville, MD (United States))

1993-01-01T23:59:59.000Z

22

Iodine transport analysis in the ESBWR.  

SciTech Connect

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

23

Iodine monofluoride discharge laser investigation  

SciTech Connect

The results of an experimental investigation to improve the performance of a discharge-pumped iodine monofluoride laser are reported. Lasing was observed at 478.7, 484.7, 490.7, and 496.5 nm. Electrical measurements of the discharge characteristics permitted the energy flow in the circuit to be followed and laser efficiencies to be calculated. Parametric studies of gas mixtures were carried out. By optimizing several parameters, single-pulse lasing energies greater than 50 mJ were obtained.

Harris, D.G.; Blauer, J.A.; Hurlock, S.C. (Rockwell International, Rocketdyne Division, Canoga Park, CA (USA))

1990-10-15T23:59:59.000Z

24

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

25

Comparison of dual-energy CT-derived iodine content and iodine overlay of normal, inflammatory and metastatic squamous cell carcinoma cervical lymph nodes  

Science Journals Connector (OSTI)

To evaluate whether dual-energy computed tomography (DECT)-derived iodine content and iodine overlay could differentiate between normal,...

Ahmed M. Tawfik; A. A. Razek; J. Matthias Kerl; N. E. Nour-Eldin

2014-03-01T23:59:59.000Z

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

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

Subnanosecond photodissociation atomic iodine laser  

SciTech Connect

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

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

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

31

Fluorination of Arc-Produced Carbon Material Containing Multiwall Nanotubes  

Science Journals Connector (OSTI)

In this work we studied the fluorination process of MWNTs produced in an electric arc. ... Carbon material was synthesized by using a setup for arc-discharge graphite evaporation described elsewhere. ...

Nicolai F. Yudanov; Alexander V. Okotrub; Yuri V. Shubin; Lyudmila I. Yudanova; Lyubov G. Bulusheva; Andrew L. Chuvilin; Jean-Marc Bonard

2002-03-21T23:59:59.000Z

32

The Spectrum of Fluorine (F1). Part II  

Science Journals Connector (OSTI)

2 January 1928 research-article The Spectrum of Fluorine (F1). Part II Herbert Dingle The Royal Society is collaborating with JSTOR to digitize, preserve, and extend access to Proceedings...

1928-01-01T23:59:59.000Z

33

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

34

Iodine Solubility in Low-Activity Waste Borosilicate Glass at...  

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

Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this...

35

Reduced fouling of ultrafiltration membranes via surface fluorination  

SciTech Connect

Surface fluorination can affect significantly the performance of an ultrafiltration membrane used to concentrate a food-related stream. Membranes fluorinated and tested as flat sheets exhibit higher initial fluxes, and do not foul as rapidly as untreated membranes. This improvement is linked to increased surface hydrophilicity, as shown in decreased contact angle with water. This increased hydrophilicity, in turn, is linked to the addition of fluorine and oxygen to the surface. The pilot plant study did-not show the difference in membrane flux and fouling observed in the flat sheet study. Instead, fluorinated and unfluorinated modules behaved similarly. Fouling by potato waste feed was severe and resulted in formation of an extensive gel layer within the module on the membrane surface. XPS, SEM and FTIR indicate that buildup of organic material occurred on both fluorinated and unfluorinated membranes, but SEM indicates that a fibrous mat of material was observed only on the nonfluorinated membrane. We conclude that in the pilot study, membrane fouling and gel formation were so extensive that the surface interaction effect was overwhelmed.

Sedath, R.H.; Yates, S.F.; Li, N.N.

1993-03-01T23:59:59.000Z

36

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

E-Print Network (OSTI)

in microbubble contrast agents for ultrasound imaging, positron sources for PET imaging, and as an imaging probe in 19F MRI. Additionally, fluorinated organic compounds generate a high ionization yield of fluorine in secondary ion mass spectrometry (SIMS), which...

Bailey, Mark Michael

2010-07-26T23:59:59.000Z

37

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

38

Fluorinated Phenoxy Boron Subphthalocyanines in Organic Light-Emitting Diodes  

Science Journals Connector (OSTI)

Fluorinated Phenoxy Boron Subphthalocyanines in Organic Light-Emitting Diodes ... All nuclear magnetic resonance (NMR) spectra were acquired on a Varian Mercury 400 MHz system in deuterated chloroform (CDCl3) purchased from Cambridge Isotope Laboratories which was used as received. ... Mass spectrometry was performed on a Waters GC time-of-flight mass spectrometer with an electron ionization probe and accurate mass determination. ...

Graham E. Morse; Michael G. Helander; Jozef F. Maka; Zheng-Hong Lu; Timothy P. Bender

2010-06-22T23:59:59.000Z

39

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

40

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

SciTech Connect

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

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 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

42

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

Energy.gov (U.S. Department of Energy (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...

43

Viscosity of high-temperature iodine  

Science Journals Connector (OSTI)

The viscosity coefficient of iodine in the temperature range 500?T?3000 K is calculated. Because of the low dissociation energy of the I2 molecules, the dissociation degree of the gas increases quickly with temperature, and I+I2 and I+I collisions must be taken into account in calculations of viscosity at temperatures greater than 1000. Several possible channels for atom-atom interaction are considered, and the resulting collision integrals are averaged over all the important channels. It is also shown that the rigid-sphere model is inaccurate in predictions of the viscosity. The approach of the present work is general and can be used for other diatomic gases with arbitrary dissociation degree.

Steve H. Kang and Joseph A. Kunc

1991-09-15T23:59:59.000Z

44

Effect of radical fluorination on mono- and bi-layer graphene in Ar/F{sub 2} plasma  

SciTech Connect

Fluorinated graphene has the possibility to achieve unique properties and functions in graphene. We propose a highly controlled fluorination method utilizing fluorine radicals in Ar/F{sub 2} plasma. To suppress ion bombardments and improve the reaction with fluorine radicals on graphene, the substrate was placed 'face down' in the plasma chamber. Although monolayer graphene was more reactive than bilayer, fluorination of bilayer reached the level of I{sub D}/I{sub G} {approx} 0.5 in Raman D peak intensity at 532 nm excitation. Annealing fluorinated samples proved reversibility of radical fluorination for both mono- and bi-layer graphenes. X-ray photoelectron spectroscopy showed the existence of carbon-fluorine bonding.

Tahara, K.; Iwasaki, T.; Hatano, M. [Department of Physical Electronics, Tokyo Institute of Technology, Tokyo 152-8552 (Japan); Matsutani, A. [Semiconductor and MEMS Processing Center, Technical Department, Tokyo Institute of Technology, Tokyo 226-8503 (Japan)

2012-10-15T23:59:59.000Z

45

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

46

Recycle of iodine-loaded silver mordenite by hydrogen reduction  

SciTech Connect

In 1977 and 1978, workers at Idaho National Engineering Laboratory (INEL) developed and tested a process for the regeneration and reuse of silver mordenite, AgZ, used to trap iodine from the dissolver off-gas stream of a nuclear fuel reprocessing plant. We were requested by the Airborne Waste Management Program Office of the Department of Energy to perform a confirmatory recycle study using repeated loadings at about 150/sup 0/C with elemental iodine, each followed by a drying step at 300/sup 0/C, then by iodine removal using elemental hydrogen at 500/sup 0/C. The results of our study show that AgZ can be recycled. There was considerable difficulty in stripping the iodine at 500/sup 0/C.; however, this step went reasonably well at 550/sup 0/C or slightly higher, with no apparent loss in the iodine-loading capacity of the AgZ. Large releases of elemental iodine occurred during the drying stage and the early part of the stripping stage. Lead zeolite, which was employed in the original design to trap the HI produced, is ineffective in removal of I/sub 2/. The process needs modification to handle the iodine. Severe corrosion of the stainless steel components of the system resulted from the HI-I/sub 2/-H/sub 2/O mixture. Monel or other halogen-resistant materials need to be examined for this application. Because of difficulty with the stripping stage and with corrosion, the experiments were terminated after 12 cycles. Thus, the maximum lifetime (cycles) of recycle AgZ has not been determined. Mechanistic studies of iodine retention by silver zeolites and of the behavior of silver atoms on the reduction stage would be of assistance in optimizing silver mordenite recycle.

Burger, L.L.; Scheele, R.D.

1982-11-01T23:59:59.000Z

47

The Spectrum of Fluorine, F II, F III, F IV  

Science Journals Connector (OSTI)

The spectrum of fluorine extending from 125A to 620A has been obtained by using a two-meter grazing-incidence spectrograph. A large number of these lines, including nearly all of the stronger ones, have been classified as transitions in the F II, F III and F IV ions. This has made possible the classification of additional lines measured by Dingle in the longer wave-length regions. These analyses yield the following ionization potentials: F II 34.81 volts, F III 62.35 volts, F IV 87.34 volts.

I. S. Bowen

1934-01-15T23:59:59.000Z

48

Separation of plutonium and americium by low-temperature fluorination  

SciTech Connect

The authors have demonstrated separation of Pu and in-grown Am using the gaseous reagent dioxygen difluoride. Aged PuF{sub 4} was fluorinated at room temperature to generate PuF{sub 6} gas, which was trapped separately and reduced to PuF{sub 4}. The reaction product contained very little Am. Unreacted solid had elevated concentrations of Am that were consistent with a material balance. Use of a gaseous reagent and product enabled remote handling during reaction and purification. This result demonstrated a simple and minimal waste alternative that may have application to a number of actinide purification problems.

Mills, T.R.; Reese, L.W.

1993-10-01T23:59:59.000Z

49

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

NLE Websites -- All DOE Office Websites (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,...

50

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

51

Some consequences of the fluorination of brucite-like layers in layered double hydroxides: Adsorption  

Science Journals Connector (OSTI)

Abstract Hydrotalcite-like compounds were synthesised by co-precipitation method. The originality of the work is the replacement of structural OH? by F?. Fluoride anions were incorporated as a part of the brucite like layers not as compensating anions. The resulting adsorptive properties of fluorinated materials are very different than those observed for the fluorine-free sample. The polarity and polarisability parameters were calculated by using dyes and xenon as molecular probes. The hydrogen bond accepting character and acido-basicity are the main properties enhanced because of the fluorination of hydrotalcite-like compounds, helping to diversify adsorption sites for chromophores or water.

Enrique Lima; Heriberto Pfeiffer; Jorge Flores

2014-01-01T23:59:59.000Z

52

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

SciTech Connect

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

53

Uranium mineralization in fluorine-enriched volcanic rocks  

SciTech Connect

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

54

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 analytical techniques to study the sorption and transport behavior of iodine species (iodide, iodate, and 4 and batch experiments to investigate the interconversion, sorption and transport of iodine species

Hu, Qinhong "Max"

55

Dry deposition of gaseous elemental iodine on water  

E-Print Network (OSTI)

DRy DEPOSITION OF GASEOUS ELEMENTAL IODINE ON WATER A Thesis by MICHAEL DANA ALLEN Submitted to the Graduate College of Texas AlkM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE August 19/4 Ma...Jor SubJect: Nuclear Engineering (Health Physics) DRY DEPOSITION OF GASEOUS ELEMENTAL IODINE ON WATER A Thesis MICHAEL DANA ALLEN Approved as to style and content by: irman of C ttee) ( a of Department) (Member) (Member) August 1974 3. 1. 595') 6...

Allen, Michael Dana

2012-06-07T23:59:59.000Z

56

337th Catalysis Research Center (CRC) Colloquium Fluorine Industry in China  

E-Print Network (OSTI)

337th Catalysis Research Center (CRC) Colloquium Fluorine Industry in China Lu Long (Shanghai, Central Research & Development, Experimental Station, DuPont Company, USA 1994.9 to1996.9 Postdoctoral

Ishii, Hitoshi

57

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

58

A novel solidification technique for fluorine-contaminated bassanite using waste materials in ground improvement applications  

Science Journals Connector (OSTI)

This study investigates the development of solidification technology, based on the formation of ettringite, for fluorine-contaminated bassanite using waste and ... B in varying proportions to obtain the optimal ettringite

Takeshi Kamei; Aly Ahmed; Hideto Horai

2014-04-01T23:59:59.000Z

59

Comparative study of four fluorinated quinolones in susceptibility factors on microorganisms  

E-Print Network (OSTI)

Widely considered in the medical field as the last of the golden anti-microbial drugs, fluorinated quinolones provide a "last defense" for the attack on bacterial infections. The drugs are useful for treating gram negative and some gram positive...

Patel, Ketul R

2013-02-22T23:59:59.000Z

60

Reaction of a Fluorine Atom with Methanol: Potential Energy Surface Considerations  

Science Journals Connector (OSTI)

Reaction of a Fluorine Atom with Methanol: Potential Energy Surface Considerations ... The latter two energetic features nicely explain why 40% of the laboratory products follow the less exothermic pathway A. ...

Hao Feng; Katherine R. Randall; Henry F. Schaefer; III

2014-09-15T23:59:59.000Z

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.


61

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

E-Print Network (OSTI)

SPIN-ROTATION CONTRIBUTION TO THE RELAXATION TIME OF THE FLUORINE NUCLEI IN BENZOTRIFLUORIDE A Thesis By ROBERT HARDY FAULK Submitted to the Graduate College of the Texas ASM University in partial fulfillment of the requirements... Contributions to the Relaxation Time for the Fluorine 6 Hydrogen Relaxation Time and the Correlation Time 33 35 36 I. INTRODUCTION The spin-rotation interaction may be visualized in the following manner. Because of the inhomogeneous distribution of charge...

Faulk, Robert Hardy

2012-06-07T23:59:59.000Z

62

Aging of Iodine-Loaded Silver Mordenite in NO2  

SciTech Connect

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. ? 500C). 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 150C, 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

63

Reduction of phosphorus diffusion in germanium by fluorine implantation  

SciTech Connect

The control of phosphorus (P) diffusion in germanium (Ge) is essential for the realisation of ultrashallow n-type junctions in Ge. This work reports a detailed study of the effect of fluorine (F) co-implantation on P diffusion in Ge. P and F profiles were characterized by secondary ion mass spectroscopy. The ion implantation damage was investigated using cross sectional transmission electron microscopy. It is shown that F co-implantation reduces the implanted P profile width and reduces both intrinsic and extrinsic P diffusion in Ge. A defect mediated mechanism for the strong influence of F co-implantation on P diffusion in Ge is proposed and invokes the formation of F{sub n}V{sub m} clusters in the F-amorphized Ge layer. A fraction of these F{sub n}V{sub m} clusters decorate the interstitial type end-of-range defects in the re-grown Ge layer and the rest react during re-growth with interstitial germanium atoms diffusing back from the amorphous crystalline interface. The Ge vacancies are then annihilated and mobile interstitial F is released and out diffuses from the surface. This results in a re-grown Ge layer which has a low vacancy concentration and in which the P diffusion rate is reduced. These results open the way to the realization of enhanced Ge n-type devices.

El Mubarek, H. A. W. [School of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL (United Kingdom)

2013-12-14T23:59:59.000Z

64

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

SciTech Connect

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

65

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

SciTech Connect

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

66

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

SciTech Connect

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 als 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

67

Iodine-131 releases from the Hanford Site, 1944--1947  

SciTech Connect

Releases of fission product iodine-131 are calculated for the 1944 through 1947 period from the Hanford Reservation. 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.

1993-03-01T23:59:59.000Z

68

Iodine Loading of NO Aged Silver Exchanged Mordenite  

SciTech Connect

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

69

1758 J. Phys. Chem. 1992, 96, 1758-1764 Ab Initio MO Study of the Thermal Decomposition of Fluorinated Disilanes,  

E-Print Network (OSTI)

of Fluorinated Disilanes, Edgar W. Ignaciot and H. Bernhard Schlegel* Department of Chemistry, Wayne State disilane, the SiH2+ SiH, and SiH3SiH+ H2paths are favored over other modes of decomposition Fluorinated silanes and disilanes, and reactive intermediates derived from these compounds, are important

Schlegel, H. Bernhard

70

A model-based technique for real-time estimation of absolute fluorine concentration in a CF4/Ar plasma  

E-Print Network (OSTI)

A model-based technique for real-time estimation of absolute fluorine concentration in a CF4/Ar for quantitative interpretation of actinometric data to deduce bulk plasma fluorine concentration in a CF4/Ar, for application of real-time feedback control to plasma etching. Based upon a model of CF4 chemistry reaction

Terry, Fred L.

71

Extraction of Am and Eu with N,N?-substituted pyridine-2,6-dicarboxamides in fluorinated diluents  

Science Journals Connector (OSTI)

Extraction of Am and Eu with N,N?-substituted pyridine-2,6-dicarboxamides in fluorinated diluents was studied. N,N?-Diethyl-N,N?-di(p-tolyl)pyridine-2,6-dicarboxamide (EtTPDA) is readily soluble in fluorinated di...

V. A. Babain; M. Yu. Alyapyshev; I. V. Smirnov; A. Yu. Shadrin

72

Transition of Iodine Analysis to Accelerator Mass Spectrometry  

SciTech Connect

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 years 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

73

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

74

Additive-Driven Dissolution Enhancement of Colloidal Silica. 3. Fluorine-Containing Additives  

Science Journals Connector (OSTI)

Add to ACS ChemWorx ... Among the former are silica removal by ion-exchange methods(13) and utilization of scale inhibitors. ... Therefore, we would like to broaden the scope of the potential utilization of fluorine-containing additives with the objective that a broader choice of additive selection will be available to end-users. ...

Konstantinos D. Demadis; Maria Somara; Eleftheria Mavredaki

2012-01-20T23:59:59.000Z

75

Dopant activation during solid phase crystallization of poly-Si and influence of fluorine and hydrogen  

SciTech Connect

Dopant activation for ion implanted solid phase crystallized (SPC) a-Si:H films, deposited by low temperature PECVD, was investigated. The impact of film thickness, the effect of subsequent hydrogenation, and a possible role for fluorine in this process have been studied.

Kalkan, A.K.; Kingi, R.M.; Fonash, S.J.

1997-07-01T23:59:59.000Z

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

New fluorinated acrylic polymers for improving weatherability of building stone materials  

Science Journals Connector (OSTI)

Acrylic polymers are widely used for their suitability to be shaped in different molecular structures. However, while very appropriate for many applications, these materials are characterized by a limited outdoor stability. In order to improve this last characteristic while maintaining the simple and flexible synthetic route, a study was performed based on the preparation of fluorinated polymers from acrylic monomers where several H-atoms in different positions were replaced with F-atoms. The structure design was aimed to optimize (e.g. minimize) the fluorine content of the final material while obtaining improved chemical and photochemical stability, good filmability and limited permeability to condensed water. The preparation of polymers of methacrylates derived from partially fluorinated alcohol by free radical mechanism is described. The fluorine content and distribution in the macromolecules is modulated by selecting different monomers and by copolymerization with nonfluorinated acrylates or vinylethers. The selection of the comonomers and their relative content in the polymer allows to control the glass transition temperature and the filmability as well as the protection efficiency of the coating. Polymers derived from more complex monomers such as ?-trifluoromethyl-methylacrylate are also described. The suitability of these new materials for protective coating of stones is tested by evaluating their stability to different chemical and physical agents and their selective permeability to water vapour vs. condensed water.

F Ciardelli; M Aglietto; L Montagnini di Mirabello; E Passaglia; S Giancristoforo; V Castelvetro; G Ruggeri

1997-01-01T23:59:59.000Z

79

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

80

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

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

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

82

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

SciTech Connect

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

83

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

SciTech Connect

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 83.63.8%, and 86.41.6% 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

84

Growth of single-crystalline rutile TiO2 nanorods on fluorine-doped tin oxide glass for organicinorganic  

E-Print Network (OSTI)

, 15] and CdS [2] have been explored and studied to overcome this shortcome, and used in organicGrowth of single-crystalline rutile TiO2 nanorods on fluorine-doped tin oxide glass for organic

Cao, Guozhong

85

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

SciTech Connect

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 g/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 g/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 g/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

86

Synthesis of carbon-11, fluorine-18, and nitrogen-13 labeled radiotracers for biomedical applications  

SciTech Connect

A number of reviews, many of them recent, have appeared on various aspects of /sup 11/C, /sup 18/F and /sup 13/N-labeled radiotracers. This monograph treats the topic principally from the standpoint of synthetic organic chemistry while keeping in perspective the necessity of integrating the organic chemistry with the design and ultimate application of the radiotracer. Where possible, recent examples from the literature of organic synthesis are introduced to suggest potentially new routes which may be applied to problems in labeling organic molecules with the short-lived positron emitters, carbon-11, fluorine-18, and nitrogen-13. The literature survey of carbon-11, fluorine-18 and nitrogen-13 labeled compounds presented are of particular value to scientists working in this field. Two appendices are also included to provide supplementary general references. A subject index concludes this volume.

Fowler, J.S.; Wolf, A.P.

1981-01-01T23:59:59.000Z

87

Structures and adsorption energetics for chemisorbed fluorine atoms on Si(100)-21  

Science Journals Connector (OSTI)

We report first-principles electronic-structure calculations related to the initial fluorination of the Si(100)-21 surface. Embedded finite silicon clusters are used to model an extended Si(100)-21 surface. Two theoretical approaches, including a geometry-mapping procedure and an evaluation of lateral interactions via a dicluster model, are presented. Adsorption of up to 2.0 monolayers of fluorine is considered. Heats of adsorption, activation barriers, preferred binding sites, equilibrium geometries, charge transfer, and vibrational frequencies are predicted for this coverage range. Lateral interactions between various adspecies are found to be critically important in determining their stability. Thermochemical predictions derived from these calculations are used to postulate a reaction mechanism associated with the initial etching steps and with the adsorption kinetics of XeF2 versus F2.

Christine J. Wu and Emily A. Carter

1992-04-15T23:59:59.000Z

88

Synthesis of fluorinated malonamides and use in L/L extraction of f-elements  

Science Journals Connector (OSTI)

Abstract Synthesis of new fluorinated tertiary malonamides (F-malonamides) was accomplished, and their liquid/liquid (L/L) extraction properties with f-elements were investigated. These molecules are fluorinated analogues of well known extractants used in several processes designed towards the treatment of nuclear wastes, and the efficient separation of lanthanides from minor actinides; however, the synthesis of F-malonamides deserved a modification of the general synthetic route commonly employed to prepare H-malonamides. Extraction of neodymium from various aqueous media into both fluorous and classical solvents was studied, which revealed an opposite trend between F-malonamides and H-malonamides: L/L extraction ability is very sensitive to the nitrogen atoms substitution pattern, and the most efficient F-malonamide is compound 3 (R1=Me), whereas the best H-malonamide is compound 5 (R1=Bu, DMDBTDMA).

Marie-Claire Dul; Damien Bourgeois; Jrme Maynadi; Daniel Meyer

2013-01-01T23:59:59.000Z

89

Benzo(C)fluorine, PAH with possible human health implications. (To BAP or  

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

Benzo(C)fluorine, PAH with possible human health implications. (To BAP or Benzo(C)fluorine, PAH with possible human health implications. (To BAP or not to BAP) Speaker(s): Larry Goldstein Date: November 7, 2000 - 12:00pm Location: 90-3122 Polycyclic aromatic hydrocarbons (PAH) are ubiquitous environmental contaminants with potential health consequences. Essentially all the cancer risk from exposure to coal tar, cigarette smoke and other products of incomplete combustion is thought to reflect the contributions of PAHs with 4 or more fused rings. In risk assessment as currently practiced the major contributor to overall risk is the 5-ring PAH benzo(a)pyrene (B(a)P).However, recent studies using a lifetime feeding protocol indicate that B(a)P does not meet criteria for application to risk assessment since it does not induce lung tumors, the endpoint upon which risk assessments

90

Specific Fluorine Labeling of the HyHEL10 Antibody Affects Antigen Binding and Dynamics  

SciTech Connect

To more fully understand the molecular mechanisms responsible for variations in binding affinity with antibody maturation, we explored the use of site specific fluorine labeling and {sup 19}F nuclear magnetic resonance (NMR). Several single-chain (scFv) antibodies, derived from an affinity-matured series of anti-hen egg white lysozyme (HEL) mouse IgG1, were constructed with either complete or individual replacement of tryptophan residues with 5-fluorotryptophan ({sup 5F}W). An array of biophysical techniques was used to gain insight into the impact of fluorine substitution on the overall protein structure and antigen binding. SPR measurements indicated that {sup 5F}W incorporation lowered binding affinity for the HEL antigen. The degree of analogue impact was residue-dependent, and the greatest decrease in affinity was observed when {sup 5F}W was substituted for residues near the binding interface. In contrast, corresponding crystal structures in complex with HEL were essentially indistinguishable from the unsubstituted antibody. {sup 19}F NMR analysis showed severe overlap of signals in the free fluorinated protein that was resolved upon binding to antigen, suggesting very distinct chemical environments for each {sup 5F}W in the complex. Preliminary relaxation analysis suggested the presence of chemical exchange in the antibody-antigen complex that could not be observed by X-ray crystallography. These data demonstrate that fluorine NMR can be an extremely useful tool for discerning structural changes in scFv antibody-antigen complexes with altered function that may not be discernible by other biophysical techniques.

Acchione, Mauro; Lee, Yi-Chien; DeSantis, Morgan E.; Lipschultz, Claudia A.; Wlodawer, Alexander; Li, Mi; Shanmuganathan, Aranganathan; Walter, Richard L.; Smith-Gill, Sandra; Barchi, Jr., Joseph J. (SAIC); (NCI)

2012-10-16T23:59:59.000Z

91

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

SciTech Connect

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

92

Converting solar energy into laser radiation using a fullerene-oxygen-iodine laser with solar pumping  

Science Journals Connector (OSTI)

The concept of a system for directly converting solar energy into laser radiation on the basis of a fullerene-oxygen-iodine laser has been developed. It is shown that this system has...

Mak, A A; Belousova, I M; Kiselev, V M; Grenishin, A S; Danilov, O B; Sosnov, E N

2009-01-01T23:59:59.000Z

93

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

SciTech Connect

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 0.40.5?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

94

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

SciTech Connect

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

95

Effect of iodine chemical form on thyroid doses during a severe accident  

Science Journals Connector (OSTI)

In most of the accidents that may occur in nuclear reactors, the short-term radiological consequences are expected to be dominated by isotopes of iodine. The assessment of doses resulting from iodine release during a severe reactor accident requires knowledge of the iodine chemical forms and removal mechanisms prior to the release to the environment. In this paper, the arguments concerning iodine chemical form in severe accidents are stated. Removal mechanisms prior to release to the environment are summarised. Various assumptions of iodine chemical form during a severe accident were used to assess the radiation doses to thyroid at site boundaries and at the low population zone of a pressurised water reactor. Doses were calculated for an adult and a ten-year-old child. It was concluded that if the spray system was used prior to the release, with proper additives to raise the pH of the sump, the doses are generally reduced. The main contributor to dose in this case is organic iodine.

Mohamed Y. Khalil; Mohamed S. Nagy; Kamal A. Talha; Mohga I. Hassan

2006-01-01T23:59:59.000Z

96

NO2 Aging and Iodine Loading of Silver-Functionalized Aerogels  

SciTech Connect

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

97

On the Use of Thermal NF3 as the Fluorination and Oxidation Agent in Treatment of Used Nuclear Fuels  

SciTech Connect

This paper presents results of our investigation on the use of nitrogen trifluoride as the fluorination or fluorination/oxidation agent for use in a process for separating valuable constituents from used nuclear fuels by employing the volatility of many transition metal and actinide fluorides. Nitrogen trifluoride is less chemically and reactively hazardous than the hazardous and aggressive fluorinating agents used to prepare uranium hexafluoride and considered for fluoride volatility based nuclear fuels reprocessing. In addition, nitrogen trifluorides less aggressive character may be used to separate the volatile fluorides from used fuel and from themselves based on the fluorination reactions temperature sensitivity (thermal tunability) rather than relying on differences in sublimation/boiling temperature and sorbents. Our thermodynamic calculations found that nitrogen trifluoride has the potential to produce volatile fission product and actinide fluorides from candidate oxides and metals. Our simultaneous thermogravimetric and differential thermal analyses found that the oxides of lanthanum, cerium, rhodium, and plutonium fluorinated but did not form volatile fluorides and that depending on temperature volatile fluorides formed from the oxides of niobium, molybdenum, ruthenium, tellurium, uranium, and neptunium. We also demonstrated near-quantitative removal of uranium from plutonium in a mixed oxide.

Scheele, Randall D.; McNamara, Bruce K.; Casella, Andrew M.; Kozelisky, Anne E.

2012-05-01T23:59:59.000Z

98

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 - (more)

Miu, Kevin (Kevin K.)

2006-01-01T23:59:59.000Z

99

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

100

Fluorination behavior of UO{sub 2}F{sub 2} in the presence of F{sub 2} and O{sub 2}  

SciTech Connect

To apply the fluoride volatility process to the spent nuclear fuel, fluorination of UO{sub 2} by fluorine has been studied. In this reaction, it is possible that the U-O-F compounds, such as UO{sub 2}F{sub 2}, are produced. Therefore, study of such compounds is useful in order to know the fluorination behavior of UO{sub 2}. This paper presents the fluorination behavior of UO{sub 2}F{sub 2} in the presence of F{sub 2} and O{sub 2}, analyzed by thermogravimetry and differential thermal analysis (TG-DTA) method using anti-corrosion type differential thermo-balance. In fluorine gas, exothermic peaks appeared and volatilization of UF{sub 6}. In oxygen gas, only slowly pace decomposition was measured from UO{sub 22} to UF{sub 6} and UO{sub 3}. (authors)

Matsuda, Minoru; Sato, Nobuaki; Kirishima, Akira; Tochiyama, Osamu [Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai, Miyagi, 980-8577 (Japan)

2007-07-01T23:59:59.000Z

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.


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

The structure of tissue on cell culture-extracted thyroglobulin is independent of its iodine content  

Science Journals Connector (OSTI)

The major protein synthesized in vitro by the ovine thyroid cell line OVNIS 6H is the prothyroid hormone thyroglobulin. Purified from serum-free cell culture media using sucrose gradient centrifugation, the thyroglobulin dimer was analysed for iodine content and observed by electron microscopy. In their usual medium, the OVNIS 6H cells produce a very poorly iodinated thyroglobulin containing 0.05 I atom per molecule. When cultured with methimazole or propylthiouracil, two inhibitors of iodide organification, less than 0.007 I atom/molecules was found. These molecules purified from cell cultures were compared to those purified from ovine thyroid tissue containing 26 I atoms/mol. Despite large differences in iodine content, the three preparations all consist of 19 S thyroglobulin dimers with the classical ovoidal shape. The variability in size measurements remains in a 2% range for all thyroglobulin types. Consequently, no real significant variation can be found between the highly iodinated thyroglobulin isolated from tissue, and the poorly or non-iodinated thyroglobulins isolated from cells cultured with or without methimazole or propylthiouracil.

E. Delain; A. Aouani; A. Vignal; E. Couture-Tosi; S. Hovspian; G. Fayet

1987-01-01T23:59:59.000Z

103

Effect of a fluorinated nickel surface on the decomposition of perfluorodiethoxymethane  

SciTech Connect

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

104

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

SciTech Connect

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

105

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

E-Print Network (OSTI)

diagram of the flow tube setup is shown in Fig. 1. A radio-frequency rf electric discharge at 13.56 MHz nm transition of atomic iodine where the O2 a1 used to pump the iodine was produced by a radio-frequency operating between two internal hollow cathode electrodes was used as the excitation source. The plasma zone

Carroll, David L.

106

Electrochemical study of iodine in the LiAlCl/sub 4/. 3SO/sub 2/ electrolyte  

SciTech Connect

Cyclic voltammograms and chronopotentiometric curves recorded at microelectrodes in LiAlCl/sub 4/ . 3SO/sub 2/ solvate containing iodine reagents are discussed. Iodine reduction was found to be a diffusion-limited process. The product of this reduction reacts with the SO/sub 2/ solvate allowing a catalytic reduction of sulfur dioxide.

Lojou, E.; Messina, R.; Perichon, J. (L.E.C.S.O. (FR)); Descroix, J.P.; Sarre, G. (SAFT (FR))

1989-05-01T23:59:59.000Z

107

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

SciTech Connect

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

108

Ductility loss of ion-irradiated zircaloy-2 in iodine. [55 MeV alpha particles  

SciTech Connect

An ion bombardment simulation technique for neutron irradiation was applied to 'thick' materials to study the effect of radiation damage on the ductility change in Zircaloy-2 in an iodine environment. Specimens were prepared from actual cladding tubes and, prior to the irradiation, they were heat-treated in vacuo at 450, 580, and 700/degree/C for 2 h. Irradiation was performed by 52-MeV alpha particles up to the 0.32 displacements per atom (dpa) at 340/degree/C. Ductility loss begins to appear after 0.03 dpa irradiation, both in iodine and argon gas environments. The iodine presence resulted in ductility reduction, compared with the argon result in all irradiation dose ranges examined. The stress applied during irradiation caused ductility loss to commence at lower dosage than in the case of stress-free irradiation. These results are discussed in relation to the existing stress corrosion cracking models.

Shimada, M.; Terasawa, M.; Yamamoto, S.; Kamei, H.; Koizumi, K.

1981-01-01T23:59:59.000Z

109

Extraction and Quantitative Analysis of Iodine in Solid and Solution Matrixes  

SciTech Connect

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

110

One-Step Production of Superhydrophobic Coatings on Flat Substrates via Atmospheric Rf Plasma Process Using Non-Fluorinated Hydrocarbons  

Science Journals Connector (OSTI)

One-Step Production of Superhydrophobic Coatings on Flat Substrates via Atmospheric Rf Plasma Process Using Non-Fluorinated Hydrocarbons ... This paper describes the direct deposition of hydrocarbon coatings with a static water contact angle higher than 150 using simple C6 hydrocarbons as a reactive gas in helium plasma generated in ambient air without any preroughening of the silicon (100) substrate. ...

Seul Hee Lee; Zachary R. Dilworth; Erik Hsiao; Anna L. Barnette; Matthew Marino; Jeong Hoon Kim; Jung-Gu Kang; Tae-Hwan Jung; Seong H. Kim

2011-01-31T23:59:59.000Z

111

Technetium and Iodine Getters to Improve Cast Stone Performance  

SciTech Connect

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

112

Metal-free and non-fluorine paper-based generator  

Science Journals Connector (OSTI)

Abstract Paper-based generator which can be integrated into traditional paper packaging process flows is particularly desirable. In this study, we reported a novel metal-free, non-fluorine, foldable paper-based electret generator based on electrostatic effect. The power generating process was carefully studied by a finite element simulation and numerical calculation in this report. The paper-based generator stimulated by human motion could drive a commercial liquid crystal display (LCD), showing its potential application in anti-counterfeit label. Moreover, a multiple-fold paper-based generator was also fabricated, and the enhancement of the area output is demonstrated. Therefore, the paper-based electret generator can effectively accumulate the irregular energy and extend the applications for paper electronics.

Qiyi Hu; Bo Wang; Qize Zhong; Junwen Zhong; Bin Hu; Xiaoqing Zhang; Jun Zhou

2014-01-01T23:59:59.000Z

113

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

SciTech Connect

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

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

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

116

Gain recovery in an electric oxygen-iodine laser J. W. Zimmerman,1,a  

E-Print Network (OSTI)

of this experiment shows that reducing the forward pumping rate by an effective factor of approximately 4 to simulate American Institute of Physics. DOI: 10.1063/1.3064163 The electrically driven oxygen-iodine laser Electri passes through a water-cooled heat exchanger and then passes through a duct containing injectors

Carroll, David L.

117

Sources and reservoirs of anthropogenic iodine-129 in western New York  

Science Journals Connector (OSTI)

Large quantities of iodine-129 have been released during nuclear weapons testing, and from nuclear power and fuel reprocessing plants. The distribution of this isotope was investigated in 110 surface water and soil samples from western New York (where several potential point sources are located) and other areas of North America, to evaluate its sources, transport pathways, and reservoirs. Elevated 129I concentrations associated with a former reprocessing facility at West Valley, NY, can be tracked to Lakes Erie and Ontario via site drainage, and for over 200 km via atmospheric transport, while only a negligible signal is associated with active power plants in the area. The results point to local reprocessing as the major source of 129I in western New York, while bomb fallout constitutes less than 0.5% of the signal. Surface soil is the dominant reservoir for anthropogenic 129I in this region. Across North America, 129I concentrations are lower than in western New York, although still significantly higher than expected weapons fallout. Reprocessing releases are currently seen to be the major source for elevated 129I concentrations on a global scale, in contrast to previous suggestions that most anthropogenic 129I was still derived from weapons fallout. Concentrations of 129I and iodine in surface reservoirs are generally found to be uncorrelated, implying that natural iodine and anthropogenic 129I are not yet in equilibrium. The results suggest that anthropogenic 129I is cycled between the atmosphere-soil-vegetation systems more rapidly than natural, pre-anthropogenic iodine.

Usha Rao; Udo Fehn

1999-01-01T23:59:59.000Z

118

THE RELATION OF DETERIORATION OF ORANGE JUICE TO ITS IODINE REDUCING VALUE  

Science Journals Connector (OSTI)

...maturity, variety and treatment on the iodine value...MCNAIR CHICAGO, ILLINOIS WATER SOLUBLE MAGNESIUM IN...this lake from a 1 to 5 water extract, have been...test as an indicator of water soluble and exchangeable...NEW MULTIPLE-UNIT ELECTRODIALYSIS ous fields of science...

M. A. Joslyn; G. L. Marsh

1932-07-22T23:59:59.000Z

119

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

120

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.

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

Behavior of mercury and iodine during vitrification of simulated alkaline Purex waste  

SciTech Connect

Current plans indicate that the high-level wastes stored at the Savannah River Plant will be solidified by vitrification. The behavior of mercury and iodine during the vitrification process is of concern because: mercury is present in the waste in high concentrations (0.1 to 2.8 wt%); mercury will react with iodine and the other halogens present in the waste during vitrification and; the mercury compounds formed will be volatilized from the vitrification process placing a high particulate load in the vitrification system off-gas. Twelve experiments were completed to study the behavior of mercury during vitrification of simulated SRP Purex waste. The mercury was completely volatized from the vitrification system in all experiments. The mercury reacted with iodine, chlorine and oxygen to form a fine particulate solid. Quantitative recovery of mercury compounds formed in the vitrification system off-gas was not possible due to high (37 to 90%) deposition of solids in the off-gas piping. The behavior of mercury and iodine was most strongly influenced by the vitrification system atmosphere. During experiments performed in which the oxygen content of the vitrification system atmosphere was low (< 1 vol%); iodine retention in the glass product was 27 to 55%, the mercury composition of the solids recovered from the off-gas scrub solutions was 75 to 85 wt%, and a small quantity of metallic mercury was recovered from the off-gas scrub solution. During experiments performed in which the oxygen content of the vitrification system atmosphere was high (20 vol%), iodide retention in the glass product was 3 to 15%, the mercury composition of the solids recovered from the off-gas scrub solutions was 60 to 80 wt%, and very little metallic mercury was recovered from the off-gas scrub solution.

Holton, L.K.

1981-09-01T23:59:59.000Z

122

Hydrogen and fluorine migration in photo-double-ionization of 1,1-difluoroethylene (1,1-C2H2F2) near and above threshold  

E-Print Network (OSTI)

and fluorine migration in photo-double-ionization of 1,1-nondissociative and dissociative photo-double-ionization ofdirect and indirect photo-double-ionization mechanisms at a

Gaire, B.

2014-01-01T23:59:59.000Z

123

Electrochemical cell studies on fluorinated natural graphite in propylene carbonate electrolyte with difluoromethyl acetate (MFA) additive for low temperature lithium battery application  

Science Journals Connector (OSTI)

Electrochemical cell performances of fluorinated natural graphite (abbreviated as FNG) electrode material was studied by using 1M of LiClO4? EC: DEC: PC (1: 1: 1 v%) electrolyte solution with and without 015% v/...

R. Chandrasekaran; M. Koh; Y. Ozhawa; H. Aoyoma

2009-05-01T23:59:59.000Z

124

Performance improvement of phenyl acetate as propylene carbonate-based electrolyte additive for lithium ion battery by fluorine-substituting  

Science Journals Connector (OSTI)

Abstract Phenyl acetate (PA) is more stable and much cheaper than vinylene carbonate (VC), a commercial electrolyte additive for graphite anode of lithium ion battery, but its performance needs to be improved. In this paper, we report a new additive, 4-fluorophenyl acetate (4-FPA), which results from the fluorine-substituting of PA. The properties of the formed solid electrolyte interphase (SEI) by 4-FPA are investigated comparatively with PA by molecular energy level calculation, cyclic voltammetry, chargedischarge test, scanning electron microscopy, energy dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy. It is found that the SEI formed by 4-FPA is more protective than PA, resulting in the improved cyclic stability of lithium ion battery: the capacity retention of LiFePO4/graphite cell after 90 cycles is 92% for 4-FPA but only 84% for PA. The fluorine in 4-FPA makes it more reducible than PA and the fluorine-containing reduction products of 4-FPA are incorporated into the SEI, which contributes to the improved performance.

Bin Li; Yaqiong Wang; Haibin Lin; Xianshu Wang; Mengqing Xu; Yating Wang; Lidan Xing; Weishan Li

2014-01-01T23:59:59.000Z

125

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

E-Print Network (OSTI)

ADSORBATE-INDUCED CORROSION: ANODIC DISSOLUTION OF PALLADIUM INDUCED BY CHEMISORBED IODINE IN HALIDE-FREE ACID SOLUTIONS A Thesis JANEMARIE A. SCHIMPF Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1991 Major Subject: Chemistry ADSORBATE-INDUCED CORROSION: ANODIC DISSOLUTION OF PALLADIUM INDUCED BY CHEMISORBED IODINE IN HALIDE-FREE ACID SOLUTIONS A Thesis JANEMARIE A. SCHIMPF Approved...

Schimpf, Janemarie A

2012-06-07T23:59:59.000Z

126

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

E-Print Network (OSTI)

The temperature dep ndence of th. ! capac! tance of tvlo iodine sin;, le crystals. Iiessur. . cents on samp! e 8 acre rinds in the c- crystallo''rcphic diection and those on samo) e C 0 . , 'DPlatl 5 ( !Gout PP5' ) in the a-c p]ane. 20 :t. CI 0 Lu LIJ LJ I... The temperature dep ndence of th. ! capac! tance of tvlo iodine sin;, le crystals. Iiessur. . cents on samp! e 8 acre rinds in the c- crystallo''rcphic diection and those on samo) e C 0 . , 'DPlatl 5 ( !Gout PP5' ) in the a-c p]ane. 20 :t. CI 0 Lu LIJ LJ I...

Intararithi, Thanom

2012-06-07T23:59:59.000Z

127

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

SciTech Connect

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

128

What can be learned with an iodine solar-neutrino detector?  

SciTech Connect

We study the potential benefits of an iodine-based solar-neutrino detector for testing hypotheses that involve neutrino oscillations. We argue that such a detector will have a good chance of distinguishing the two allowed regions of {Delta}{ital m}{sup 2}-sin{sup 2}2{theta} parameter space if neutrino conversion is occurring in the Sun. It should also be able to detect seasonal variations in the signal due to vacuum oscillations and might be sensitive enough to detect day/night variations due to MSW transitions in the earth. Although it would need to be calibrated, a working iodine detector could be completed long before more ambitious projects that seek to accomplish the same things.

Engel, J. [Department of Physics and Astronomy, CB3255, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)] [Department of Physics and Astronomy, CB3255, University of North Carolina, Chapel Hill, North Carolina 27599 (United States); Krastev, P.I. [Institute for Advanced Study, Princeton, New Jersey 08540 (United States)] [Institute for Advanced Study, Princeton, New Jersey 08540 (United States); Lande, K. [Department of Astronomy and Astrophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)] [Department of Astronomy and Astrophysics, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)

1995-05-01T23:59:59.000Z

129

Coupling the nickel-iodine-sulphur cycle with a nuclear reactor  

Science Journals Connector (OSTI)

Nuclear hydrogen production is a technically feasible and economically viable option for addressing future energy needs. Several projects have been started on the co-generation of hydrogen and electricity from nuclear energy. In this report, the nickel sulphur iodine (NIS) cycle, a thermochemical water splitting cycle originally developed in ENEA for solar hydrogen production, was studied to be coupled with a new generation nuclear reactor for massive hydrogen production.

Pier Paolo Prosini

2013-01-01T23:59:59.000Z

130

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

SciTech Connect

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

131

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

SciTech Connect

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

132

Heterogeneous distribution of trace elements and fluorine in phosphogypsum by-product  

Science Journals Connector (OSTI)

Phosphogypsum (PG), a by-product from phosphate fertilizer production, is composed mainly of gypsum (CaSO42H2O) but also contains minor quantities of trace elements (TE), rare earth elements (REE) and F. Some elements may be elevated in quantities to be of environmental concern. This study determined the distribution of TE, REE and F among three size fractions (53 ?m) in \\{PGs\\} derived from three different phosphate rock sources. Fine fraction PG (<20 ?m) composed of <10% of total PG mass but was highly enriched in TE, REE and F compared to unfractionated PG. For PG derived from Idaho rock, Se in the fine fraction was enriched 830 times over soil and 415 times over shale while Cd was enriched in the fine fraction 70-fold over shale and soil. Fluorine was elevated 37 times in the fine fraction compared to shale. The same trends were observed for PG derived from Togo and Florida rocks. Elevated elemental concentrations in fine particles and particle sorting during PG deposition may contribute to chemical heterogeneity of PG repositories, and make elements more susceptible to mobilization processes, such as leaching and erosion. Removal of fines will improve the utilization of PG in other industries, such as for use as an amendment to agricultural soils.

J.M. Arocena; P.M. Rutherford; M.J. Dudas

1995-01-01T23:59:59.000Z

133

Fluorine-supported flames ignited by a pulsed CO2 laser  

Science Journals Connector (OSTI)

The chemistry accompanying pulsed CO2 laser irradiation of fuelSF6 mixtures was examined using time-integrated visible emission spectroscopy and analysis of the IR absorption spectra of end products. Under suitable conditions of laser energy, gas pressure, mixture ratio and cell geometry, the visible luminescence exhibits characteristics of fluorine-supported flames. Similar emission has been observed in irradiated fuelS2F10 mixtures. An analysis of ignition delay versus absorbed laser energy is presented for CH4?SF6 mixtures; it accounts for fluence-dependent absorption by these mixtures and models the effects of hydrodynamic motion on the initial pressure, density and temperature profiles in the samples using a computer code for two-dimensional wave propagation. Many of the IR absorption data are consistent with a reaction mechanism involving the formation of small hydrocarbon intermediates followed by efficient hydrogen abstraction to generate end products such as CS2, CF4 and C2F4. Mechanisms for reaction initiation are discussed.

Wayne M. Trott

1984-01-01T23:59:59.000Z

134

Electron scattering mechanisms in fluorine-doped SnO{sub 2} thin films  

SciTech Connect

Polycrystalline fluorine-doped SnO{sub 2} (FTO) thin films have been grown by ultrasonic spray pyrolysis on glass substrate. By varying growth conditions, several FTO specimens have been deposited and the study of their structural, electrical, and optical properties has been carried out. By systematically investigating the mobility as a function of carrier density, grain size, and crystallite size, the contribution of each physical mechanism involved in the electron scattering has been derived. A thorough comparison of experimental data and calculations allows to disentangle these different mechanisms and to deduce their relative importance. In particular, the roles of extended structural defects such as grain or twin boundaries as revealed by electron microscopy or x-ray diffraction along with ionized impurities are discussed. As a consequence, based on the quantitative analysis presented here, an experimental methodology leading to the improvement of the electro-optical properties of FTO thin films is reported. FTO thin films assuming an electrical resistivity as low as 3.7??10{sup ?4}???cm (square sheet resistance of 8??/?) while retaining good transmittance up to 86% (including substrate effect) in the visible range have been obtained.

Rey, G., E-mail: germrey@gmail.com; Consonni, V.; Bellet, D. [Laboratoire des Matriaux et du Gnie Physique, CNRSGrenoble INP, 3 parvis Louis Nel, 38016 Grenoble (France); Ternon, C. [Laboratoire des Matriaux et du Gnie Physique, CNRSGrenoble INP, 3 parvis Louis Nel, 38016 Grenoble (France); Laboratoire des Technologies de la Microlectronique, CNRS/UJF-Grenoble 1/CEA, 17 rue des Martyrs, 38054 Grenoble (France); Modreanu, M. [Micro-Nanoelectronics Centre, Tyndall National Institute, University College Cork, Lee Maltings, Dyke Parade, Cork (Ireland); Mescot, X. [Institut de Microlectronique Electromagntisme et Photonique-Laboratoire d'Hyperfrquences et de Caractrisation, Grenoble INP, 3 Parvis Louis Nel, 38016 Grenoble (France)

2013-11-14T23:59:59.000Z

135

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

136

Iodine doping effects on the lattice thermal conductivity of oxidized polyacetylene nanofibers  

SciTech Connect

Thermal transport in oxidized polyacetylene (PA) nanofibers with diameters in the range between 74 and 126?nm is measured with the use of a suspended micro heater device. With the error due to both radiation and contact thermal resistance corrected via a differential measurement procedure, the obtained thermal conductivity of oxidized PA nanofibers varies in the range between 0.84 and 1.24?W?m{sup ?1}?K{sup ?1} near room temperature, and decreases by 40%70% after iodine doping. It is also found that the thermal conductivity of oxidized PA nanofibers increases with temperature between 100 and 350?K. Because of exposure to oxygen during sample preparation, the PA nanofibers are oxidized to be electrically insulating before and after iodine doping. The measurement results reveal that iodine doping can result in enhanced lattice disorder and reduced lattice thermal conductivity of PA nanofibers. If the oxidation issue can be addressed via further research to increase the electrical conductivity via doping, the observed suppressed lattice thermal conductivity in doped polymer nanofibers can be useful for the development of such conducting polymer nanostructures for thermoelectric energy conversion.

Bi, Kedong, E-mail: lishi@mail.utexas.edu, E-mail: kedongbi@seu.edu.cn [Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments, School of Mechanical Engineering, Southeast University, Nanjing 211189 (China); Department of Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712 (United States); Weathers, Annie; Pettes, Michael T.; Shi, Li, E-mail: lishi@mail.utexas.edu, E-mail: kedongbi@seu.edu.cn [Department of Mechanical Engineering, University of Texas at Austin, Austin, Texas 78712 (United States); Matsushita, Satoshi; Akagi, Kazuo [Department of Polymer Chemistry, Kyoto University, Kyoto 615-8510 (Japan); Goh, Munju [Department of Polymer Chemistry, Kyoto University, Kyoto 615-8510 (Japan); Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), Eunha-ri san 101, Bondong-eup, Wanju-gun, Jeolabuk-do 565-905 (Korea, Republic of)

2013-11-21T23:59:59.000Z

137

Determine Minimum Silver Flake Addition to GCM for Iodine Loaded AgZ  

SciTech Connect

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

138

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

139

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

SciTech Connect

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

140

Iodine-129 and plutonium isotopes in Arctic kelp as historical indicators of transport of nuclear fuel-reprocessing wastes from mid-to-high latitudes in the Atlantic Ocean  

Science Journals Connector (OSTI)

...Iodine-129:iodine-127 ratios were determined using accelerator mass spectrometry in 34 Arctic marine algae collected between 1930 and 1993. A smaller set (5) of marine algae were also analyzed mass spectrometr...

L. W. Cooper; T. M. Beasley; X.-L. Zhao; C. Soto; K. L. Vinogradova

1998-06-01T23:59:59.000Z

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

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

SciTech Connect

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

142

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

SciTech Connect

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

143

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

SciTech Connect

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

144

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

SciTech Connect

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

145

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

146

Removal of mercury from solids using the potassium iodide/iodine leaching process  

SciTech Connect

Potassium iodide (KI) and iodine (I{sub 2}) leaching solutions have been evaluated for use in a process for removing mercury from contaminated mixed waste solids. Most of the experimental work was completed using surrogate waste. During the last quarter of fiscal year 1995, this process was evaluated using an actual mixed waste (storm sewer sediment from the Oak Ridge Y-12 Site). The mercury content of the storm sewer sediment was measured and determined to be approximately 35,000 mg/kg. A solution consisting of 0.2 M I{sub 2} and 0.4 M KI proved to be the most effective leachant used in the experiments when applied for 2 to 4 h at ambient temperature. Over 98% of the mercury was removed from the storm sewer sediment using this solution. Iodine recovery and recycle of the leaching agent were also accomplished successfully. Mathematical model was used to predict the amount of secondary waste in the process. Both surrogate waste and actual waste were used to study the fate of radionuclides (uranium) in the leaching process.

Klasson, K.T.; Koran, L.J. Jr.; Gates, D.D.; Cameron, P.A.

1997-12-01T23:59:59.000Z

147

Purification, Recovery, and Laser-Driven Fluorination of Silicon from Dissolved and Particulate Silica for the Measurement of Natural Stable Isotope Abundances  

Science Journals Connector (OSTI)

Purification, Recovery, and Laser-Driven Fluorination of Silicon from Dissolved and Particulate Silica for the Measurement of Natural Stable Isotope Abundances ... At least three simple techniques exist for this:? fusion of SiO2 with Na2CO3 to form water-soluble sodium silicate, dissolution in HF, or dissolution in NaOH. ...

Christina L. De La Rocha; Mark A. Brzezinski; Michael J. DeNiro

1996-11-01T23:59:59.000Z

148

Fluoroalkylated ?,?-Unsaturated Imines as Synthons for the Preparation of Fluorinated Triazinane-2,4-diones and Dihydropyrimidin-2(1H)-ones  

Science Journals Connector (OSTI)

Although triazinane-2,4-dione heterocycles have been used in herbicidal formulations(34) and in pharmaceutical compositions,(35) few examples of preparation of the triazinane-2,4-dione heterocycles have been reported. ... As many as 2530% of agrochemicals and 20% of pharmaceuticals on the market are estimated to contain fluorine. ...

Guillermo Fernndez de Trocniz; Ana M. Ochoa de Retana; Gloria Rubiales; Francisco Palacios

2014-05-06T23:59:59.000Z

149

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

E-Print Network (OSTI)

in radioactive waste, iodine 129 I will make a significant contribution to potential overall long-term dose resulting from waste storage ( [Altmann, 2008] and [Grambow, 2008] ). 129 I has a complex chemistry of the Callovian­Oxfordian (160 Ma) clayey formation from the ANDRA (French Radioactive Waste Management Agency

Paris-Sud XI, Université de

150

UV-vis spectroscopy of iodine adsorbed on alkali-metal-modified zeolite catalysts for addition of carbon dioxide to ethylene oxide  

SciTech Connect

The basicity of alkali-metal-exchange (Na, K, Cs) zeolites X and Y was probed by UV-vis diffuse reflectance spectroscopy of adsorbed iodine. The observed blue shift in the visible absorption spectrum of adsorbed iodine, compared to gaseous iodine, correlated well with the negative charge on the framework oxygen atoms calculated from the Sanderson electronegativity equalization principle. The blue shifts associated with iodine adsorbed on classical catalytic supports like silica, alumina, and magnesia suggest that the iodine adsorption technique for probing basicity is applicable to a wide variety of solids. Iodine was also adsorbed on X and Y zeolites containing occluded cesium oxide formed by decomposition of impregnated cesium acetate. However, the iodine appeared to irreversibly react on these strongly basic samples, possibly forming an adsorbed triiodide ions. As a complement to the adsorption studies, the activity of alkali-metal-containing zeolites for the base-catalyzed formation of ethylene carbonate from ethylene oxide and carbon dioxide was investigated. Among the ion-exchanged zeolites, the cesium form of zeolite X exhibited the highest activity for ethylene carbonate formation. The catalytic activity of a zeolite containing occluded cesium was even higher than that of a cesium-exchanged zeolite. The presence of water adsorbed in zeolite pores promoted the rate of ethylene carbonate formation for both cesium-exchanged and cesium-impregnated zeolite X.

Doskocil, E.J.; Bordawekar, S.V.; Kaye, B.G.; Davis, R.J. [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering] [Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering

1999-07-29T23:59:59.000Z

151

Physical properties of highly oriented spray-deposited fluorine-doped tin dioxide films as transparent conductor  

Science Journals Connector (OSTI)

Heavily fluorine-doped tin dioxide films were deposited by spray pyrolysis using a high precursor concentration. The effect of film thickness was studied in the range 801230nm. The films were polycrystalline and preferentially oriented along [200]. The grain size, carrier mobility ?, carrier concentration N and resistivity reached ?230nm, 35cm2/Vs, 61020cm?3 and 310?4?cm, respectively, for 1000nm films. An unusual direct and linear ?N dependence revealed the importance of the structural properties. The 1000nm thick films possessed an average visible transmittance ?81% and a reflectance ?66% at 2500nm. The electro-optical properties revealed their excellent quality as a TCO material.

Chitra Agashe; J. Hpkes; G. Schpe; M. Berginski

2009-01-01T23:59:59.000Z

152

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 In/sup 3 +/ salts.

Cahen, D.; Chen, Y.W.

1984-09-20T23:59:59.000Z

153

Test bed for a high throughput supersonic chemical oxygen - iodine laser  

SciTech Connect

The paper reports the development of a test bed for a chemical oxygen - iodine laser based on a high throughput jet flow singlet oxygen generator (JSOG). The system provides vertical singlet oxygen extraction followed by horizontal orientation of subsequent subsystems. This design enables the study of flow complexities and engineering aspects of a distributed weight system as an input for mobile and other platform-mounted systems developed for large scale power levels. The system under consideration is modular and consists of twin SOGs, plenum and supersonic nozzle modules, with the active medium produced in the laser cavity. The maximal chlorine flow rate for the laser is {approx}1.5 mole s{sup -1} achieving a typical chemical efficiency of about 18%. (lasers)

Singhal, Gaurav; Mainuddin; Rajesh, R; Varshney, A K; Dohare, R K; Kumar, Sanjeev; Singh, V K; Kumar, Ashwani; Verma, Avinash C; Arora, B S; Chaturvedi, M K; Tyagi, R K; Dawar, A L

2011-05-31T23:59:59.000Z

154

The generation of singlet Delta oxygen - A technology overview. [For use in chemical oxygen iodine lasers  

SciTech Connect

The rate of generation of O2(1Delta g) using the chlorine-basic-hydrogen-peroxide reaction is a key element to predict the performance of the chemical oxygen iodine laser. O2(1Delta g) carries the energy in the laser, and thus is one of the prime determinants of power in the flow. To predict the performance of O2(1Delta g) generators requires the prediction of the utilization of chlorine, the yield of excited oxygen, and the concentration of potential contaminants in the chemical exhaust of the generator. This paper describes an approach to the analysis of O2(1Delta g) generators. 6 refs.

Mcdermott, W.E. (Rockwell International Corp., Rocketdyne Div., Canoga Park, CA (United States))

1992-07-01T23:59:59.000Z

155

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

SciTech Connect

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

156

Iodine Treatment of LigninCellulose Acetate Electrospun Fibers: Enhancement of Green Fiber Carbonization  

Science Journals Connector (OSTI)

Iodine Treatment of LigninCellulose Acetate Electrospun Fibers: Enhancement of Green Fiber Carbonization ... The chemical composition of the samples were analyzed using an Oxford Instruments X-Max20 energy dispersive X-ray spectrometer (EDS), Thermo Scientific Nicolet 6700 Fourier transform infrared (FTIR) spectrometer with a GladiATR single reflection ATR accessory (operated between 400 and 4000 cm1 with a 4 cm1 resolution averaged over 40 scans), and Renishaw Raman spectrometer operated using a 785 nm near-infrared laser (11001900 cm1 with a 0.8 cm1 resolution averaged over 3 scans). ... This work presents a systematic study of the ratio between the integrated intensities of the disorder-induced D and G Raman bands (ID/IG) in nanographite samples with different crystallite sizes (La) and using different excitation laser energies. ...

Makoto Schreiber; Singaravelu Vivekanandhan; Amar Kumar Mohanty; Manjusri Misra

2014-11-06T23:59:59.000Z

157

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

158

Two-dimensional real-time imaging system for subtraction angiography using an iodine filter  

SciTech Connect

A new type of subtraction imaging system was developed using an iodine filter and a single-energy broad bandwidth monochromatized x ray. The x-ray images of coronary arteries made after intravenous injection of a contrast agent are enhanced by an energy-subtraction technique. Filter chopping of the x-ray beam switches energies rapidly, so that a nearly simultaneous pair of filtered and nonfiltered images can be made. By using a high-speed video camera, a pair of two 512 {times} 512 pixel images can be obtained within 9 ms. Three hundred eighty-four images (raw data) are stored in a 144-Mbyte frame memory. After phantom studies, {ital in} {ital vivo} subtracted images of coronary arteries in dogs were obtained at a rate of 15 images/s.

Umetani, K.; Ueda, K. (Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185 (Japan)); Takeda, T.; Anno, I.; Itai, Y. (Institute of Clinical Medicine, University of Tsukuba, Ibaraki 305 (Japan)); Akisada, M.; Nakajima, T. (Tama Health Management Center, Tachikawa, Tokyo 190 (Japan))

1992-01-01T23:59:59.000Z

159

Electronic structure and models of receptor of monooxygenase inductors from a number of polychlorinated polycyclic compounds. 3. Mndo calculations of chlorine and fluorine derivatives of dibenzo-p-dioxins  

Science Journals Connector (OSTI)

MNDO calculations for dibenzo-para-dioxin (DD) and its chlorine- and fluorine-substituted derivatives have shown that the geometric structure of the molecules and the ?-donor properties are very little depende...

A. V. Fokin; N. P. Vorob'eva; N. I. Raevskii

1989-11-01T23:59:59.000Z

160

Can we remove iodine-131 from tap water in Japan by boiling? Experimental testing in response to the Fukushima Daiichi Nuclear Power Plant accident  

Science Journals Connector (OSTI)

Iodine-131 concentrations in tap water higher than 100BqL?1 were reported by several local governments in Japan following the Fukushima Daiichi Nuclear Power Plant accident. Some individuals in the emergency-response community recommended the boiling of tap water to remove iodine-131. However, the tap water boiling tests in this study showed no iodine-131 loss from the tap water with either short-term boiling (110min) or prolonged boiling (up to 30min) resulting in up to 3-fold volume reductions. In this situation, boiling was shown to be not effective in removing iodine-131 from tap water; indeed even higher concentrations may result from the liquid-volume reduction accompanying this process.

K. Tagami; S. Uchida

2011-01-01T23:59:59.000Z

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

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

162

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

163

Ion-ion neutralization of iodine in radio-frequency inductive discharges of Xe and I2 mixtures  

E-Print Network (OSTI)

. There is a considerable body of research investigating rare gas- halogen kinetics in the context of atmospheric pressure. The plasma is sustained in an 3.8 cm i.d. by 7.6-cm- long quartz tube. The excitation coil is a solenoid, and having eight and three-quarters turns. Variable rf power is supplied to the sys- tem at 11.3 MHz. Iodine

Kushner, Mark

164

Effects of fluorine substitution on the electrochemical performance of layered Li-excess nickel manganese oxides cathode materials for lithium-ion batteries  

Science Journals Connector (OSTI)

Abstract Li[Li1/6Ni1/4Mn7/12]O2?xFx (x=0, 0.025, 0.05, 0.075, 0.1) as the cathode materials for rechargeable lithium batteries have been synthesized via the co-precipitation method followed by a high-temperature solid-state reaction. Field emission scanning electron microscopy images exhibit that fluorine substitution catalyzes the growth of the primary particles. Although the initial discharge capacity decreases as the fluorine content increasing, the fluorine substituted materials present significant improvement in the cycling performance. Among the synthesized materials, Li[Li1/6Ni1/4Mn7/12]O1.95F0.05 exhibits excellent high temperature (50C) cycling performance with a capacity retention of 93.7% after 30 cycles while the bare Li[Li1/6Ni1/4Mn7/12]O2 cathode exhibited only 73.7%.

Hongxiao Li; Li-Zhen Fan

2013-01-01T23:59:59.000Z

165

Distributions of selenium, iodine, lead, thorium and uranium in Japanese river waters  

SciTech Connect

Long-lived radionuclides released from nuclear facilities, such as deep underground disposal facilities, could reach humans through several transfer paths in the environment. Uses of ground water and river water for agricultural field irrigation and for drinking water are important paths. In order to understand behavior of long-lived radionuclides in the terrestrial water environment, we carried out a natural analogue study, that is, measurement of selenium (Se), iodine (I), lead (Pb), thorium (Th) and uranium (U) concentrations in 45 Japanese rivers at 10 sampling points from the upper stream to the river mouth for each river. Geometric mean concentrations for Se, I, Pb, Th and U were 0.057, 1.4, 0.039, 0.0055, 0.0109 ng/mL, respectively. Distribution patterns from upper stream to river mouth were different by elements, for instance, the concentrations of I, Th and U increased when the sampling points were nearer the river mouth, while that of Se were almost constant. For Pb, the highest value was observed in the middle part of each river in many cases. (authors)

Tagami, K.; Uchida, S. [National Institute of Radiological Sciences, Chiba (Japan)

2007-07-01T23:59:59.000Z

166

Optical saturation and extraction from the chemical oxygen-iodine laser medium  

SciTech Connect

A rate equation model for the loaded gain of a flowing chemical oxygen-iodine laser is described. The solution of the model is obtained for the loaded gain when the medium is stimulated by a multimode field. It is shown that optical saturation of the COIL medium is governed by three parameters: the ratio of the collision to Doppler linewidth measuring how much of the total linewidth is accessed; a saturation parameter measuring the field strength required to overcome medium quenching; and a cross-relaxation parameter measuring the ability of the velocity and hyper-fine relaxation to restore homogeneity to the transition. Criteria for the saturation character, homogeneous, inhomogeneous, or mixed, are established. This gain model is used to parametrically examine the sensitivity of the loaded gain and optical extraction efficiency to cavity pressure and to the uncertainty in the magnitude of the velocity cross-relaxation rates. It is shown, under single-mode operating conditions, that the extraction efficiency increases as the rate of velocity cross-relaxation increases and that the saturation behavior of the medium can be totally changed by only modes changes in the cavity operating conditions. The implication when interpreting experimental data and scaling from low to high power operation are briefly discussed and it is shown that interpreting test data without consideration of the factors presented here can lead to substantial error in estimating the power available from the flow.

Copeland, D.A.; Bauer, A.H. (Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.)

1993-09-01T23:59:59.000Z

167

Abatement of Xenon and Iodine Emissions from Medical Isotope Production Facilities  

SciTech Connect

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

168

The mechanical properties of Zircaloy-2 after exposure to iodine-methanol solutions  

Science Journals Connector (OSTI)

An investigation is described into the changes in mechanical properties of Zircaloy-2 after corrosion in boiling iodinemethanol solutions. As-received specimens, 0.7 mm thick, corroded rapidly in the boiling solution (0.25 g of iodine/litre of methanol); for preoxidised specimens the presence of an intact oxide film inhibited corrosive attack in direct proportion to the oxide thickness. Preoxidised specimens showed reduced corrosion resistance after prestraining 2.0 0.25% before corrosion. Tensile tests at room temperature indicated that when the corrosion weight loss exceeded 7 mg/dm2, the strength and uniform ductility became adversely effected. Such changes were associated with extensive intergranular attack in as-received specimens or with localized intergranular attack below cracks in the oxide in preoxidised specimens. The final failure was always by a transgranular ductile tearing process. Thus above 7 mg/dm2 weight loss, corresponding to a maximum of 70 ?m intergranular penetration, the fall in strength was due to the loss of load-bearing section in this specimen geometry and section thickness.

R.D. Nicholson

1980-01-01T23:59:59.000Z

169

Development of a Novel Iodine-Vitamin C/Vanadium Redox Flow Battery  

Science Journals Connector (OSTI)

Abstract A novel (I+/I2)/vitamin C vs. V4+/V5+ semi-vanadium redox flow battery (semi-VRFB) with iodine, vitamin C, and V4+/V5+ redox couples, using multiple electrodes was investigated. The electrodes, Ni-P/carbon paper and Ni-P/TiO2/carbon paper, were modified by the electroless plating method and sol-gel process. The electrochemical characteristics and the performance of the semi-VRFB were verified by the cyclic voltammetry method and a charge-discharge test. This study shows modified electrodes can improve the reversibility and symmetry of the oxidation-reduction reaction of the semi-VRFB system, and effectively raise its storage ability. The coulomb efficiency of the semi-VRFB system is close to 96%, which is higher than the all-VRFB. The semi-VRFB system can reduce the amount of vanadium salt, therefore, it is not only a reduction in cost, but also has a great potential for the development of energy storage systems.

Mei-Ling Chen; Shu-Ling Huang; Chin-Lung Hsieh; Jan- Yen Lee; Tz-Jiun Tsai

2014-01-01T23:59:59.000Z

170

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

SciTech Connect

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-129s 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

171

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

172

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

SciTech Connect

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

173

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

SciTech Connect

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

174

An investigation of the neutron flux in bone-fluorine phantoms comparing accelerator based in vivo neutron activation analysis and FLUKA simulation data  

Science Journals Connector (OSTI)

Abstract We have tested the Monte Carlo code FLUKA for its ability to assist in the development of a better system for the in vivo measurement of fluorine. We used it to create a neutron flux map of the inside of the in vivo neutron activation analysis irradiation cavity at the McMaster Accelerator Laboratory. The cavity is used in a system that has been developed for assessment of fluorine levels in the human hand. This study was undertaken to (i) assess the FLUKA code, (ii) find the optimal hand position inside the cavity and assess the effects on precision of a hand being in a non-optimal position and (iii) to determine the best location for our ?-ray detection system within the accelerator beam hall. Simulation estimates were performed using FLUKA. Experimental measurements of the neutron flux were performed using Mn wires. The activation of the wires was measured inside (1) an empty bottle, (2) a bottle containing water, (3) a bottle covered with cadmium and (4) a dry powder-based fluorine phantom. FLUKA was used to simulate the irradiation cavity, and used to estimate the neutron flux in different positions both inside, and external to, the cavity. The experimental results were found to be consistent with the Monte Carlo simulated neutron flux. Both experiment and simulation showed that there is an optimal position in the cavity, but that the effect on the thermal flux of a hand being in a non-optimal position is less than 20%, which will result in a less than 10% effect on the measurement precision. FLUKA appears to be a code that can be useful for modeling of this type of experimental system.

F. Mostafaei; F.E. McNeill; D.R. Chettle; W. Matysiak; C. Bhatia; W.V. Prestwich

2015-01-01T23:59:59.000Z

175

Effects of Fluorine-Containing Graft and Block Copolymer Additives on Removal Characteristics of Dilute Benzene in Water by Microphase-Separated Membranes Modified with These Additives  

Science Journals Connector (OSTI)

Add to ACS ChemWorx ... When larger amounts of the PFA-g-PDMS and PFA-b-PDMS were added to a PMMA/PDMS, the latter additive could keep the microphase-separated structures with a continuous PDMS phase, but the former did not. ... Thus, in this study the pervaporation characteristics for the removal of benzene from a dilute aqueous solution of benzene using PFA-g-PDMS/PMMA-g-PDMS and PFA-b-PDMS/PMMA-g-PDMS membranes, which were prepared by adding fluorine-containing graft and block copolymer additives to the PMMA-g-PDMS membrane, were investigated. ...

Tadashi Uragmi; Hiroshi Yamada; Takashi Miyata

2006-02-11T23:59:59.000Z

176

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

SciTech Connect

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

177

Test Plan to Demonstrate Removal of Iodine and Tritium from Simulated Nuclear Fuel Recycle Plant Off-gas Streams using Adsorption Processes  

SciTech Connect

This letter documents the completion of the FCR&D Level 4 milestone for the Sigma Team Off-Gas - ORNL work package (FT-14OR031202), Co-absorption studies - Design system complete/test plan complete (M4FT-14OR0312022), due November 15, 2013. The objective of this test plan is to describe research that will determine the effectiveness of silver mordenite and molecular sieve beds to remove iodine and water (tritium) from off-gas streams arising from used nuclear fuel recycling processes, and to demonstrate that the iodine and water can be recovered separately from one another.

Bruffey, Stephanie H. [ORNL] [ORNL; Spencer, Barry B. [ORNL] [ORNL; Jubin, Robert Thomas [ORNL] [ORNL

2013-12-11T23:59:59.000Z

178

Fracture-mechanics analysis of iodine stress-corrosion crack propagation in zircaloy tubing used to clad oxide-pellet fuel rods. LWBR Development Program  

SciTech Connect

A fracture mechanics model is presented for analysis of iodine induced stress corrosion crack growth in Zircaloy tubing. The model utilizes a power law to relate crack velocity to stress intensity factor, a hyperbolic tangent function for the influence of iodine concentration, and an exponential function for the influence of temperature and material strength. Comparisons of predicted to measured failure times show that predicted failure times are within a factor of two of the measured failure times for a majority of the specimens considered.

Crescimanno, P.J.; Campbell, W.R.; Goldberg, I.

1983-04-01T23:59:59.000Z

179

Anion retention in soil: Possible application to reduce migration of buried technetium and iodine  

SciTech Connect

This report summarizes a literature review of our present knowledge of the anion exchange properties of a number of soils and minerals, which may potentially be used as anion exchangers to retard migration of such anions as iodide (I{sup {minus}}), iodate (IO{sub 3}{sup {minus}}) and pertechnetate (TcO{sub 4}{sup {minus}}) away from disposal site. The amorphous clays allophane and imogolite, are found to be among the most important soil components capable of developing appreciable amounts of positive charge for anion exchange even at about neutral pH. Decreases in the SiO{sub 2}/Al{sub 2}O{sub 3} ratio and soil pH result in an increase in soil AEC. Allophane and imogolite rich soils have an AEC ranging from 1 to 18 meq/100g at pH about 6. Highly weathered soils dominated by Fe and Al oxides and kaolinite may develop a significant amount of AEC as soil pH falls. The retention of iodine (I) and technetium ({Tc}), by soils is associated with both soil organic matter, and Fe and Al oxides, whereas sorption on layer silicate minerals in negligible. Fe and Al oxides become more important in the retention of anionic I{sup {minus}}, IO{sub 3}{sup {minus}}, and TcO{sub 4}{sup {minus}} as pH falls, since more positive charge is developed on the oxide surfaces. Although few studies, if any, have been conducted on I and {Tc} sorption by soil allophane and imogolite, it is estimated that a surface plough soil (2 million pounds soil per acre) with 5 meq/100g AEC, as is commonly found in andisols, shall retain approximately 5900 kg I and 4500 kg {Tc}. It is conceivable that an anion exchanger such as an andisol could be used to modify the near field environment of a radioactive waste disposal facility. This whole disposal system would then offer similar migration resistance to anions as is normally afforded to cations by usual and normal soils. 93 refs., 10 figs., 7 tabs.

Gu, B.; Schulz, R.K. (California Univ., Berkeley, CA (United States). Dept. of Soil Science)

1991-10-01T23:59:59.000Z

180

Fluorine K x-ray spectra for projectiles moving at 0.5 to 1.5 MeV/amu in gas, foil, and solid targets  

Science Journals Connector (OSTI)

High-resolution x-ray spectral measurements are used to determine the relative intensity of x-ray transitions for ions such as fluorine excited in collisions with various-pressure Ne, Ar, and Kr gas targets, thin carbon foils, and a thick carbon slab. The relative intensities are observed to be nonlinearly dependent on both target density and incident charge Z. These effects are attributed to strong collisional quenching of initial states by subsequent large-impact-parameter collisions. The data permit extraction of the total quenching cross sections (?Q) for fast fluorine ions in various states. A strong enhancement of the relative intensity of 2P13 is observed for F7+ and O6+ projectiles. This strong enhancement is attributed to selective excitation of metastable states in the beam, i.e., 1s2s S13, into the 1s2p P13 state. Finally, the data for foil and solid targets are used to obtain information on the excitation states of ions moving in solids.

R. J. Fortner and D. L. Matthews

1977-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluorine iodine phos" from the National Library of EnergyBeta (NLEBeta).
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181

Characterisation of C-F polymer film formation on the air-bearing surface etched sidewall of fluorine-based plasma interacting with AL2O3-TiC substrate  

Science Journals Connector (OSTI)

C-F polymer redeposition is generated on the etched sidewall of the patterned air-bearing surface (ABS). This C-F polymer is a byproduct from fluorine-based plasma using a Surface Technology Systems multiplex-pro air-bearing etch (ABE). The morphology ...

Alonggot Limcharoen; Pichet Limsuwan; Chupong Pakpum; Krisda Siangchaew

2013-01-01T23:59:59.000Z

182

Fission gas and iodine release measured up to 15 GWd/t UO/sub 2/ burnup  

SciTech Connect

A summary is presented of the measured release of xenon, krypton and iodine up to 15 GWd/t UO/sub 2/ burnup for fuel centerline temperatures ranging from 950 to 1800 K, at average linear heat ratings of 15 to 35 kW/m. The IFA-430 is composed of four 1.28-m-long fuel rods containing 10% enriched UO/sub 2/ pellet fuel. Two of the fuel rods are connected, top and bottom, to a gas flow system that permits the fission gases released from the fuel pellets to be swept out of the rods during irradiation and measured via gamma spectrometry. The release/burnup increased significantly between 10 and 15 GWd/t burnup. Fuel temperature did not change. Increased releases were due to physical changes in the fuel-surface area. Changes appeared to be due to higher power operation and burnup.

Appelhans, A.D.

1983-01-01T23:59:59.000Z

183

The effects of texture and surface condition on the iodine stress corrosion cracking susceptibility of unirradiated Zircaloy-2  

SciTech Connect

Four lots of stress-relieved Zircaloy-2 tubing were prepared from a single heat of the alloy. Tube reduction parameters were controlled so that each lot had a different crystallographic texture. The tubing with the most radial (least tangential) basal pole intensity was shown to have a Kearns texture number in the radial direction of 0.61, whereas the equivalent value for the tubing with the least radial texture was 0.48. Each lot of tubing was given one of three surface treatments: etched, etched and grit blasted, or lightly etched and shot blasted. The iodine stress corrosion cracking (SCC) susceptibility of the unirradiated tubing was determined by measuring the time to failure in a standard tube pressurization test at about 593 K in which 6 mg of iodine was present for each square centimetre of exposed Zircaloy surface. The results showed that texture has a large effect on SCC susceptibility and that surface condition has a significant but lesser effect. The SCC resistance was lowest in the material with the most tangential basal pole intensity and increased as the texture became more radial. The lightly etched and shot-blasted surface resulted in times to failure that were shorter than the times for the other two surface conditions. However, it seems likely that the influence of surface treatment is quite complex and that SCC susceptibility can change significantly with a seemingly minor change in the surface treatment technique. The effect of texture was interpreted in terms of its influence on strength, on deformation characteristics, and on orientation of SCC susceptible planes with respect to the dominant tensile (hoop) stress. The effect of surface condition was interpreted in terms of its influence on residual stresses, on local texture changes, on local stress concentration, and on chemical activity.

Syrett, B.C.; Cubicciotti, D.; Jones, R.L.

1981-12-01T23:59:59.000Z

184

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

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

185

Enhanced photovoltaic properties of di(dodecylthiophene)-alt-2,3-di(3-octoxylphenyl)-5,8-dithieno[3,2-b]thiophene 6,7-difluoroquinoxaline copolymer by fluorination  

Science Journals Connector (OSTI)

Abstract A novel di(dodecylthiophene)-alt-2,3-di(3-octoxylphenyl)-5,8-dithieno[3,2-b]thiophene-6,7-difluoroquinoxaline copolymer (PBT-TTQ-F) and its counterpart of PBT-TTQ-H without the substituted fluorine atom were designed and synthesized. Significant effect of the attaching fluorine atoms in the polymer backbone on photovoltaic properties of copolymers was observed. In the optimized bulk hetero-junction polymer solar cells with a structure of ITO/PEDOT: PSS/copolymers: PC71BM (1:2, w/w)/Ca/Al, PBT-TTQ-F exhibited a higher power conversion efficiency (PCE) of 3.05% with a short-circuit current (Jsc) of 9.48mA/cm2 and a fill factor (FF) of 48.6% under an illumination of AM 1.5, 100mW/cm2. The PCE, Jsc and FF values are 1.21.7 times higher than those of the PBT-TTQ-H-based devices. Our results demonstrated that photovoltaic properties could be significantly enhanced by copolymeric fluorination in PCSc.

Pei Zhou; Jiang Fan; Dongfeng Dang; Junwei Shi; Xiangdong Wang; Wenhong Peng; Hua Tan; Yafei Wang; Yu Liu; Weiguo Zhu

2015-01-01T23:59:59.000Z

186

Iodine-stress corrosion cracking of Zircaloy-2 cladding under near plane strain and localized stress-strain conditions  

SciTech Connect

The segmented expanding mandrel test (SEMT) method is generally regarded as a good laboratory simulator of pellet-cladding interactions (PCI) in LWR fuel rods. Yet it does not reproduce the low strain failures in Zircaloy cladding typical of PCI-failed fuel elements and commonly observed in other types of laboratory specimens. This investigation addressed this apparent inconsistency. Iodine-stress corrosion cracking (I-SCC) of cold worked, unirradiated Zircaloy-2 cladding was induced in three different types of tubing specimens (known as regular, thin-wall, and chamfered) in a modified SEMT apparatus designed to test mechanical conditions that could lead to slow strain failures. Only the chamfered sample, which has been shown to be subjected to more nearly plane strain conditions than either of the other two specimen types, failed consistently at low (0.8%) total diametral strains in good agreement with in-reactor failure data. Such conditions were numerically and experimentally quantified by means of finite element calculational models and local strain measurements. The numerical analyses and strain measurements provide valuable insight into the PCI simulating power of the segmented expanding mandrel test and its experimental limitations. Failure-strain results for chamfered barrier claddings were obtained and compared with available literature data. The improved I-SCC resistance of this type of cladding was confirmed but the failure strains were significantly lower than reported for regular barrier tubes.

Nobrega, B.N.

1984-01-01T23:59:59.000Z

187

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

SciTech Connect

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

188

Hydrogen and fluorine migration in photo-double-ionization of 1,1-difluoroethylene (1,1-C2H2F2) near and above threshold  

Science Journals Connector (OSTI)

We have studied the nondissociative and dissociative photo-double-ionization of 1,1-difluoroethylene using single photons of energies ranging from 40 to 70 eV. Applying a coincident electron-ion three-dimensional momentum imaging technique, kinematically complete measurements have been achieved. We present the branching ratios of the six reaction channels identified in the experiment. Electron-ion energy maps and relative electron emission angles are used to distinguish between direct and indirect photo-double-ionization mechanisms at a few different photon energies. The influence of selection and propensity rules is discussed. Threshold energies of double ionization are extracted from the sum of the kinetic energies of the electrons, which hint to the involvement of different manifolds of states. The dissociative ionization channels with two ionic fragments are explored in detail by measuring the kinetic energy release of the fragment ions, sum of the kinetic energies, as well as the energy sharing of the two emitted electrons. We investigate the migration of hydrogen and fluorine atoms and compare the experimental results to the photo-double-ionization of centrosymmetric linear and planar hydrocarbons (C2H2 and C2H4) whenever possible.

B. Gaire; I. Bocharova; F. P. Sturm; N. Gehrken; J. Rist; H. Sann; M. Kunitski; J. Williams; M. S. Schffler; T. Jahnke; B. Berry; M. Zohrabi; M. Keiling; A. Moradmand; A. L. Landers; A. Belkacem; R. Drner; I. Ben-Itzhak; Th. Weber

2014-04-21T23:59:59.000Z

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

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

Dosimetric and Late Radiation Toxicity Comparison Between Iodine-125 Brachytherapy and Stereotactic Radiation Therapy for Juxtapapillary Choroidal Melanoma  

SciTech Connect

Purpose: To compare the dose distributions and late radiation toxicities for {sup 125}I brachytherapy (IBT) and stereotactic radiation therapy (SRT) in the treatment of juxtapapillary choroidal melanoma. Methods: Ninety-four consecutive patients with juxtapapillary melanoma were reviewed: 30 have been treated with IBT and 64 with SRT. Iodine-125 brachytherapy cases were modeled with plaque simulator software for dosimetric analysis. The SRT dosimetric data were obtained from the Radionics XKnife RT3 software. Mean doses at predetermined intraocular points were calculated. Kaplan-Meier estimates determined the actuarial rates of late toxicities, and the logrank test compared the estimates. Results: The median follow-up was 46 months in both cohorts. The 2 cohorts were balanced with respect to pretreatment clinical and tumor characteristics. Comparisons of radiation toxicity rates between the IBT and SRT cohorts yielded actuarial rates at 50 months for cataracts of 62% and 75% (P=.1), for neovascular glaucoma 8% and 47% (P=.002), for radiation retinopathy 59% and 89% (P=.0001), and for radiation papillopathy 39% and 74% (P=.003), respectively. Dosimetric comparisons between the IBT and SRT cohorts yielded mean doses of 12.8 and 14.1 Gy (P=.56) for the lens center, 17.6 and 19.7 Gy (P=.44) for the lens posterior pole, 13.9 and 10.8 Gy (P=.30) for the ciliary body, 61.9 and 69.7 Gy (P=.03) for optic disc center, and 48.9 and 60.1 Gy (P<.0001) for retina at 5-mm distance from tumor margin, respectively. Conclusions: Late radiation-induced toxicities were greater with SRT, which is secondary to the high-dose exposure inherent to the technique as compared with IBT. When technically feasible, IBT is preferred to treat juxtapapillary choroidal melanoma.

Krema, Hatem, E-mail: htmkrm19@yahoo.com [Department of Ocular Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)] [Department of Ocular Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada); Heydarian, Mostafa [Department of Radiation Medicine, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)] [Department of Radiation Medicine, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada); Beiki-Ardakani, Akbar [Department of Radiation Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada); Weisbrod, Daniel [Department of Ocular Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)] [Department of Ocular Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada); Xu, Wei [Department of Biostatistics, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)] [Department of Biostatistics, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada); Laperriere, Normand J.; Sahgal, Arjun [Department of Radiation Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)] [Department of Radiation Oncology, Princess Margaret Hospital/University Health Network, University of Toronto, Toronto, Ontario (Canada)

2013-07-01T23:59:59.000Z

191

Reaction with Propane of I(52P1/2), produced by Photolysis of Iodine in the Continuum of the B3?ou+X1?g+ System, and by Collisional Release inside the Banded Region  

Science Journals Connector (OSTI)

... and the ^-propyl iodide was determined by gas chromatography, after separation of the unreacted propane on a low-temperature still. The quantum yield is independent of the area of ... 60 C in a mixture of 0-20 mm of iodine with 100 mm of propane, the quantum yield for the formation of ^-propyl iodide is 1-5 x ...

A. B. CALLEAR; J. F. WILSON

1966-07-30T23:59:59.000Z

192

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

193

Fission product iodine during early Hanford-Site operations: Its production and behavior during fuel processing, off-gas treatment and release to the atmosphere  

SciTech Connect

The Hanford Environmental Dose Reconstruction (HEDR) Project was established to estimate the radiological dose impact that Hanford Site operations may have made on the local and regional population. This impact is estimated by examining operations involving radioactive materials that were conducted at the Hanford Site from the startup of the first reactor in 1944 to the present. HEDR Project work is divided among several technical tasks. One of these tasks, Source Terms, is designed to develop quantitative estimates of all significant emissions of radionuclides by Hanford Site operations since 1944. Radiation doses can be estimated from these emissions by accounting for specific radionuclide transport conditions and population demography. This document provides technical information to assist in the evaluation of iodine releases. 115 refs., 5 figs., 3 tabs.

Burger, L.L.

1991-05-01T23:59:59.000Z

194

Generation of iodine L-shell X-rays under excitation of large CF{sub 3}I clusters by femtosecond laser radiation  

SciTech Connect

The use of clusters of polyatomic molecules with a relatively low ionisation energy ({approx}10 eV) is proposed for the efficient production of X-ray radiation. We have observed for the first time the generation of characteristic X-ray radiation due to L transitions in iodine atoms under the high-intensity femtosecond laser irradiation of molecular CF{sub 3}I clusters, which were a small admixture to Ar carrier gas. The X-ray conversion efficiency amounts to {approx}10{sup -6} (for a yield of {approx}10{sup 7} photons per pulse), which is an order of magnitude higher than the efficiency we obtained in the case of argon clusters under comparable conditions. (letters)

Gordienko, Vyacheslav M; Dzhidzhoev, M S; Zhvaniya, I A; Pribytkov, Andrei V; Trubnikov, Dmitrii N; Fedorov, D O

2012-11-30T23:59:59.000Z

195

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

196

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

197

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

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

to trigger on and measure hard probes... methods to study high energy density QCD at the LHC. The ALICE Electromagnetic Calorimeter (EMCal) adds... from other ALICE detector...

198

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

SciTech Connect

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

199

Reaccin con borohidruro de sodio de 3, 3-etiln-bis (3,4-dihidro-6-halo-sustituido-2h-1,3-benzoxazina) donde halo es: flor, cloro, bromo y yodo / Reaction with sodium borohydride of 3, 3-etylene-bis (3,4-dihydro-6-halo-substituted-2h-1,3-benzoxazine) where halo is: fluorine, chlorine, bromine and iodine .  

E-Print Network (OSTI)

??Rojas Salgado, Jicli Jos (2010) Reaccin con borohidruro de sodio de 3, 3-etiln-bis (3,4-dihidro-6-halo-sustituido-2h-1,3-benzoxazina) donde halo es: flor, cloro, bromo y yodo / Reaction with (more)

Rojas Salgado, Jicli Jos

2010-01-01T23:59:59.000Z

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

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

202

NMR evidence of LiF coating rather than fluorine substitution in Li(Ni{sub 0.425}Mn{sub 0.425}Co{sub 0.15})O{sub 2}  

SciTech Connect

A series of 'Li{sub 1+z/2}(Ni{sub 0.425}Mn{sub 0.425}Co{sub 0.15}){sub 1-z/2}O{sub 2-z}F{sub z}' materials was prepared by a coprecipitation route and their structure was characterized using X-ray diffraction (XRD), as well as {sup 7}Li and {sup 19}F Magic Angle Spinning (MAS) NMR spectroscopy. Two hypotheses were considered: (i) formation of layered oxyfluoride materials and (ii) formation of a mixture between the layered material and LiF. Structural parameters were refined by the Rietveld method, using XRD diffraction data. The refinement results did not allow us to choose between these two hypotheses: no significant change in crystallinity and structural parameters was observed irrespective of the fluorine ratio. {sup 7}Li and {sup 19}F MAS NMR analyses showed signals with isotropic positions characteristic of LiF, but envelopes characteristic of very strong dipolar interactions with the electron spins of the material, demonstrating that LiF was not incorporated into the layered oxide structure but was instead present as a coating. - Graphical abstract: {sup 7}Li and {sup 19}F MAS NMR show signals with isotropic positions characteristic of LiF, but with spinning sidebands envelopes characteristic of very strong dipolar interactions with the electron spins of the layered oxide, demonstrating that F is not a part of the material but is present as an LiF coating.

Menetrier, M.; Bains, J. [ICMCB, CNRS, Universite Bordeaux 1, Site ENSCPB, 87 avenue Schweitzer, 33608 PESSAC cedex (France); Croguennec, L. [ICMCB, CNRS, Universite Bordeaux 1, Site ENSCPB, 87 avenue Schweitzer, 33608 PESSAC cedex (France)], E-mail: laurence.croguennec@icmcb-bordeaux.cnrs.fr; Flambard, A.; Bekaert, E. [ICMCB, CNRS, Universite Bordeaux 1, Site ENSCPB, 87 avenue Schweitzer, 33608 PESSAC cedex (France); Jordy, C.; Biensan, Ph. [SAFT, Direction de la Recherche, 111-113 Bld Alfred Daney, 33074 Bordeaux (France); Delmas, C. [ICMCB, CNRS, Universite Bordeaux 1, Site ENSCPB, 87 avenue Schweitzer, 33608 PESSAC cedex (France)

2008-12-15T23:59:59.000Z

203

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

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

204

The Seebeck coefficient of iodine  

E-Print Network (OSTI)

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Dry and Wet Crystals ~ ~ ~ ~ ~ ~ ~ ~ Thermoelectric emf Measurement ~ ~ ~ ~ Temperature Variation and Measurement Seebeck Coefficient Measurement Shields and Ground Accuracy Time Required to Obtain Steady-State Miscellaneous 5 5 5 5 7 7 7... the term in the variation of the scattering mechanism, varies as CHAPTER I THEORY The Seebeck effect is the appearance of a voltage drop (thermo- electric emf) in the sample due to a temperature gradient. The Seebeck coefficient of a material...

Perez-Fernandez, Domingo Miguel

2012-06-07T23:59:59.000Z

205

Iodine-129 in Terrestrial Ores  

Science Journals Connector (OSTI)

...from the Broken Hill district of New South Wales...breaking the seal and heating the charcoal to2000C...observed in many major geothermal areas studied in Iceland...within the region of geothermal alteration of the surface...faults, and, in many geothermal areas, faults provide...

B. Srinivasan; E. C. Alexander Jr.; O. K. Manuel

1971-07-23T23:59:59.000Z

206

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

207

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

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

208

Catalysed Reaction of Xenon with Fluorine  

Science Journals Connector (OSTI)

... of the nickel wire after reaction showed that the surface (x 10,000) was roughened by poly crystalline flakes (~l[ji), which were shown by electron diffraction to ...

B. G. BAKER; P. G. FOX

1964-10-31T23:59:59.000Z

209

Recent Developments in Fluorine-Containing Agrochemicals  

Science Journals Connector (OSTI)

The past 15 years has been a very exciting time for research into agrochemicals, with many significant advances being achieved. ... achieved against a background of change in the agrochemicals industry. Finney ha...

David Cartwright

1994-01-01T23:59:59.000Z

210

Iodine Charge-Transfer Salts of Benzene-Bridged Bis(1,2,3,5-diselenadiazolyl) Diradicals. Electrocrystallization and Solid-State Characterization of 1,3- and 1,4-[(Se2N2C)C6H4(CN2Se2)][I  

Science Journals Connector (OSTI)

Electroreduction of 1,3- and 1,4-benzene-bridged bis(diselenadiazolium) salts [1,4-Se][SbF6]2 and [1,4-Se][SbF6]2 in acetonitrile, at a Pt wire and in the presence of iodine affords the 1:1 charge-transfer salts [1,4-Se][I] and [1,3-Se][I]. Crystals of [1,...

C. D. Bryan; A. W. Cordes; N. A. George; R. C. Haddon; C. D. MacKinnon; R. T. Oakley; T. T. M. Palstra; A. S. Perel

1996-03-14T23:59:59.000Z

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

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

Enzymatic Iodination of Sindbis Virus Proteins  

Science Journals Connector (OSTI)

...in 0.3 ml of growth medium. Adsorption was allowed to pro- ceed for 60 min at 36 C with occasional shaking. Eagle medium (2...Migration here and in subsequent figures was from left to right. ceed for 10 min, at which time the monolayer was washed three times...

Bartholomew M. Sefton; Gary G. Wickus; Boyce W. Burge

1973-05-01T23:59:59.000Z

213

Photo-effects in iodine single crystals  

E-Print Network (OSTI)

Effects 29 29 29 34 34 4D CHAPTER V. DISCUSSIGN A. Dark EMF Values B. photo EMP Spectral Response D. Tenperature Dependence 42 42 44 45 APPENDIX A . Tabulation of Driginal Experlnsntal Data B. Changes in Dark end I hoto EMP... with Tenperature 50 58 54 REFKRENCES LIST OP TABLES Table Effects of various gaseous amhients on dark and photo emf values Page 31 II Effects of cooling on dark and photo emf values 33 vi LIST OF PIGVRES Figure Possible photo-transitions in sn...

Rieves, John Michael

2012-06-07T23:59:59.000Z

214

Speciation of dissolved iodine in estuarine waters  

Science Journals Connector (OSTI)

... at 4 C in the dark, and analysed within a month of collection. Previous storage experiments showed that no measurable changes in iodate or iodide occurred in water stored in ... ) was determined by a procedure different from that used for estuarine waters.

J. DAVID SMITH; EDWARD C. V. BUTLER

1979-02-08T23:59:59.000Z

215

Equilibria in trialkylarsine oxide-iodine solutions  

E-Print Network (OSTI)

. Copley, F. Fairbrother, and A. Thompson, J. Less-Common Metals, 8, 256 (1965) ~ 5 ~ 9. 10. 12 L. J. Andrews, Chem. Revs. , ~4, 713 (1954). L. E. Orgel, Quart. Revs. , 8, 422 (1954) . S. P. NcGlynn, Chem. Revs. , ~8, 1113 (1958). L. J. Andrews...

Kolar, Frank Lee

2012-06-07T23:59:59.000Z

216

Natural iodine in a clay formation: Implications for iodine fate in geological disposals  

E-Print Network (OSTI)

a significant contribution to potential overall long-term dose resulting from the waste storage (Altmann, 2008 Laboratory of Environmental Geology, Research Group of Geoenvironmental/Engineering Division of Solid Waste problematic radioisotopes in the context of nuclear waste geological disposal due to its high mobility

Paris-Sud XI, Université de

217

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

SciTech Connect

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

218

Positron emission tomographic imaging of tumors using monoclonal antibodies  

SciTech Connect

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

219

A combined purification of fluorine-containing foul water  

SciTech Connect

An experiment was carried out for two-stage water purification. A solution of AOC ( aluminum oxychloride) was added to a neutralized and clarified foul water and the pH brought up to 11.5 by lime water. After cleaning, the required components were identified. This method is simple and in relation to the apparatus used does not differ from the neutralization method. Therefore under industrial conditions the process can be carried out using the standard equipment. The hypothesis that flouride is codeposited with CHSA-3 has been confirmed experimentally. With additional purification using the sulfo-aluminate method, the value of the pH immediately after deposition is greater than the norm. The results obtained have made it possible to develop a simple, effective method of combining high purification of foul water from flourine and sulfates with the simultaneous additional deposition of heavy ferrous metals.

Sal'nikova, E.O.

1986-05-01T23:59:59.000Z

220

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

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)

and The Nanotechnology Center for Mechanics in Regenerative Medicine, Columbia University, New York, New York 10027 C and The Nanotechnology Center for Mechanics in Regenerative Medicine, Columbia University, New York, New York 10027 Department of Chemical Engineering, Columbia University, New York, New York 10027 and The Nanotechnology

Hone, James

222

Synthesis and material properties of supramolecules containing fluorinated organomercurials  

E-Print Network (OSTI)

to the mercury atom in an h2-fashion via Hg???Carene bonds which range from 2.3 to 2.7 ?. Longer Hg???p interactions are also often observed in neutral organomercurial 21 derivatives which bear arene ligands.84 With Hg???Carene distances in the range of 3... to the mercury atom in an h2-fashion via Hg???Carene bonds which range from 2.3 to 2.7 ?. Longer Hg???p interactions are also often observed in neutral organomercurial 21 derivatives which bear arene ligands.84 With Hg???Carene distances in the range of 3...

Taylor, Thomas Jackson

2009-05-15T23:59:59.000Z

223

Low Temperature Reduction of Alumina Using Fluorine Containing Ionic Liquids  

SciTech Connect

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 30C 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 3.9107 cm2?s1 at a temperature of 30C. 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

224

Organic fluorine in human serum: natural versus industrial sources  

Science Journals Connector (OSTI)

...highly inadvisable to locate a chemical waste disposal site adjacent to a radioac-tive waste disposal site. Naturally occur-ring organic substances...EPA-52015-761020 (1977). 3. The hydrology of the Maxey Flats site has been described in H. H. Zehner...

J Belisle

1981-06-26T23:59:59.000Z

225

Fluorinated Electrolyte for 5-V Li-Ion Chemistry  

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

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...

226

Fluorine-Modified Polyaromatic Hydrocarbons for Organic Electronics...  

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

semiconductors with potential application to flexible OLED displays and organic photovoltaics (OPVs). Description The laboratory of Dr. Steven Strauss has been a pioneer in the...

227

The crystal structure of the triphenylphosphine sulfide - iodine addition complex  

E-Print Network (OSTI)

AND REFINENENT Page 3 5 REFERENCES DISCUSSION OF THE STRUCTURE . . . 10 LIST OF FICUPES Figure l. 2 ~ 3 ~ Page Composite of' the Intensity Statistics f' or the ( 010 ) and ( 001 ) crojections . . . . . lip The Assn'etric Unit in a-axis Pro lection...&lycee . or -', o. ' inc, c&srb)on& anci hydro, "l&&rr;&ave tho f ollowing r&. sul. s: 'od ne &1 oor' I;yd, ogcn 0 b . , ". r' v F& d 56. 33', ' 3 2. 26;:r. h. . o c?r& al 3 c&'' ';) ) ; or ono raolcc ulc o" t, r&c complox irr thc, rni ?, . c...

Schweikert, William Walter

2012-06-07T23:59:59.000Z

228

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

229

Simulation of the sulphur iodine thermochemical cycle / Bothwell Nyoni.  

E-Print Network (OSTI)

??The demand for energy is increasing throughout the world, and fossil fuel resources are diminishing. At the same time, the use of fossil fuels is (more)

Nyoni, Bothwell

2011-01-01T23:59:59.000Z

230

Technetium and Iodine Separations in the UREX Process.  

SciTech Connect

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

231

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

232

Distribution of iodine in soils of Northern Ireland  

Science Journals Connector (OSTI)

...geochemical and airborne geophysical survey...concentrates while the airborne geophysical survey...square. 2-mm fraction pulverized in...Lead collection fire assay/ ICP-MS...Lead collection fire assay/ ICP-MS...the 2 150 mum fraction. Examined for...1958). The release of highly radioactive...

Dermot Smyth; Christopher C. Johnson

233

Synthetic Approaches to a Novel Iodinated Analogue of BPA  

Science Journals Connector (OSTI)

Prevailing clinical boron carriers for BNCT are disodium mercaptoundecahydro-closo...-dodecaborate (sodium borocaptate, BSH) and 4-dihydroxyboryl phenylalanine (4-boronophenylalanine, BPA). It has been shown that...

M. Suominen; J. Vhtalo; J. Yli-Kauhaluoma

2001-01-01T23:59:59.000Z

234

The standard potential of the iodate/iodine electrode  

E-Print Network (OSTI)

THE STAJ'JDAPD POTDi TIAL IODATE/IODI JJE EDEC'i ROJ E A Thesis RODNEY, DJ&ll . RT SPITZ Suhmitted to the Gregau?te Coliec, :e of Texas AJ'H Ln: uer; its in pvrtia1 fu' fi11ment of the re. ". , uir?. ". : nt for the deosr'. e of MASTER OE.... O. Lundberg and W. M. Latimer, J. Amer. Chem. Soc. 56, 858 (1934) VITA Rodney Dwight Spitz was born in Saqinaw, Michigan on August 8, 1935. He is the son of Albert F. . Spitz of Saginaw, Michigan and Aurelia O. Prater. of Ventura, California...

Spitz, Rodney Dwight

2012-06-07T23:59:59.000Z

235

Detection of iodine monoxide in the tropical free troposphere  

Science Journals Connector (OSTI)

...runs were conducted with WRF (22): (i) a 60-h...km) to better resolve local deep convection. The model...retrieval. Fig. S3. WRF simulations from a cloud-resolving...line. Scattered trade wind cumulus clouds (gray...research and forecast model (WRF) analysis of air...

Barbara Dix; Sunil Baidar; James F. Bresch; Samuel R. Hall; K. Sebastian Schmidt; Siyuan Wang; Rainer Volkamer

2013-01-01T23:59:59.000Z

236

Imaging of Fluorine and Boron from Fluorinated Boronophenylalanine in the Same Cell at Organelle Resolution by Correlative Ion Microscopy and Confocal Laser Scanning Microscopy  

Science Journals Connector (OSTI)

...J. A. Quantitative imaging and microlocalization of boron-10 in brain tumors and infiltrating tumor cells by SIMS ion...R. Quantitative subcellular dynamic SIMS imaging of boron-10 and boron-11 isotopes in the same cell delivered by...

Subhash Chandra; George W. Kabalka; Daniel R. Lorey II; Duane R. Smith; Jeffrey A. Coderre

2002-08-01T23:59:59.000Z

237

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

SciTech Connect

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

238

Plasma-assisted CVD of fluorinated, hydrogenated amorphous silicon. Final report  

SciTech Connect

During the past year, three novel large-area (100 cm/sup 2/) a-Si:H solar cells were developed with the following configurations: inverted NIP/SS cells with an improved red response; inverted a-Si:H/a-B:H heterojunction cells with high V/sub oc/; and NIP/metal cells with a CVD P-layer grown pyrolytically from silane and diborane. Initial experiments were performed using disilane as the deposition gas for the intrinsic layer in both NIP/SS and PIN/SS structures. Coatings of In/sub 2/O/sub 3/, using a technique developed by Dr. Ovadyahu, were applied to NIP/SS cells in order to evaluate its potential as a conductive coating in practical amorphous silicon solar cells.

Coleman, J.H.; Hammes, J.P.; Wiesmann, H.J.

1981-01-01T23:59:59.000Z

239

Molecular Model of the Ring-Opening and Ring-Closure Reaction of a Fluorinated Indolylfulgide  

Science Journals Connector (OSTI)

Next, the role of the seam is elucidated by focusing on the energetic and structural characteristics of two further CoIns from that seam, one in the closed-ring region (CoInC) and one in the open-ring region (CoIncZc/tZc). ... A similar constellation is found at the open-ring side, where CoIncZc/tZc could be located (Figure 6, bottom). ... ring opening process in pyrrole has been investigated by performing classical on-the-fly dynamics using the multiconfiguration SCF method for the computation of energies and energy gradients. ...

Artur Nenov; Wolfgang J. Schreier; Florian O. Koller; Markus Braun; Regina de Vivie-Riedle; Wolfgang Zinth; Igor Pugliesi

2012-09-29T23:59:59.000Z

240

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

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

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

242

Decomposition Mechanism of Fluorinated Compounds in Water Plasmas Generated Under Atmospheric Pressure  

Science Journals Connector (OSTI)

We developed a DC water plasma torch which with a cathode of...16...]. The hafnium used as cathode material can overcome the erosion problems and achieve a long operating time in oxidation atmospheric. The torch ...

Narengerile; Hironori Saito; Takayuki Watanabe

2010-12-01T23:59:59.000Z

243

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

244

Photochemical dimerization of a fluorinated dibenzylideneacetone in chloroform solution  

Science Journals Connector (OSTI)

(1E,4E)-1,5-Bis(2,6-difluorophenyl)penta-1,4-dien-3-one dimerizes under sunlight in chloroform solution to form the corresponding cyclobutane derivative. The dimer shows the `truxillic acid'-type arrangement of crystallographic centres of inversion, with cell dimensions closely related to those of the monomer.

Schwarzer, A.

2014-01-09T23:59:59.000Z

245

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

246

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

SciTech Connect

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

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

SciTech Connect

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

248

Spectroscopic ellipsometry and Raman study of fluorinated nanocrystalline carbon thin films  

E-Print Network (OSTI)

and gas flux ratio of CH4 and CF4 . Utilizing the Tauc­Lorentzian formula, we performed multilayer substrate at varying growth temperatures and gas flow ratio of CH4 and CF4 us- ing spectroscopic

Yang, In-Sang

249

Orthogonal Patterning of Multiple Biomolecules Using an Organic Fluorinated Resist and Imprint Lithography  

Science Journals Connector (OSTI)

Streptavidin solutions of final concentrations 1, 2, and 5 ?g/mL were prepared in carbonate buffer (43 mM NaHCO3, 7 mM Na2CO2, 0.05% (w/v) NaN3, pH 9.2). ... Protein solutions containing 25 ?g/mL of either DNP-BSA or biotin-BSA in phosphate buffered saline (PBS, pH 7.4) were prepared. ... (25) Our approach differs from this backfill technique by providing the ability to adhere new layers of proteins within already existing layers and in a spatially defined manner. ...

Kari M. Midthun; Priscilla G. Taylor; Carol Newby; Margarita Chatzichristidi; Panagiota S. Petrou; Jin-Kyun Lee; Sotiris E. Kakabakos; Barbara A. Baird; Christopher K. Ober

2013-02-25T23:59:59.000Z

250

Bulk heterojunction organic solar cell based on a novel fluorescent fluorineboron complex  

Science Journals Connector (OSTI)

Organic materials in solar cells are a promising alternative to inorganic ones...14...]. Moreover, the chemical flexibility for modifications on organic materials via chemical synthesis methods drives the...57....

Fen Qiao; Aimin Liu; Ying Zhou; Yi Xiao; Ping Ou Yang

2009-03-01T23:59:59.000Z

251

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

SciTech Connect

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

252

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

SciTech Connect

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

253

Production and application of synthetic precursors labeled with carbon-11 and fluorine-18  

SciTech Connect

It is evident from this chapter that there is enormous flexibility both in the selection of the nature of the radioisotope and ways to generate it, as well as in the selection of the labeling precursor to appropriately attach that radioisotope to some larger biomolecule of interest. The arsenal of radiolabeling precursors now available to the chemist is quite extensive, and without a doubt will continue to grow as chemists develop new ones. However, the upcoming years will perhaps reflect a greater effort in refining existing methods for preparing some of those precursors that are already available to us. For example, the use of solid-phase reactions to accomplish in a single step what would normally take several using conventional solvent-based reactions has already been shown to work in many occasions. The obvious advantage here is that processes become more amenable to system automation thus affording greater reliability in day-to-day operations. There are perhaps other technologies in science that have yet to be realized by the chemist in the PET laboratory that could provide a similar or even a greater benefit. One only needs to be open to new ideas, and imaginative enough to apply them to the problems at hand.

Ferrieri, R.A.

2001-04-02T23:59:59.000Z

254

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

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

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

255

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

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

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

256

Normal ferroelectric to ferroelectric relaxor conversion in fluorinated polymers and the relaxor dynamics  

Science Journals Connector (OSTI)

To elucidate the molecular origin of the polarization dynamics in the ferroelectric relaxor poly(vinylidene fluoridetrifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) terpolymer, a broadband dielectric st...

Shihai Zhang; Rob J. Klein; Kailiang Ren; Baojin Chu

2006-01-01T23:59:59.000Z

257

Normal ferroelectric to ferroelectric relaxor conversion in fluorinated polymers and the relaxor dynamics  

Science Journals Connector (OSTI)

To elucidate the molecular origin of the polarization dynamics in the ferroelectric relaxor poly(vinylidene fluoridetrifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)) terpolymer, a broadband dielectric st...

Shihai Zhang; Rob J. Klein; Kailiang Ren; Baojin Chu

2007-01-01T23:59:59.000Z

258

Characterization and First Human Investigation of FIBT, a Novel Fluorinated A? Plaque Neuroimaging PET Radioligand  

Science Journals Connector (OSTI)

[18F]FIBT was titrated against post-mortem human AD brain homogenate in a saturation binding assay previously performed with [3H]PiB. ... Binding of [18F]FIBT to human AD brain was further analyzed by in vitro incubation of human AD brain sections in comparison to [11C]PiB and standard immunohistochemistry. ... Finally, [18F]FIBT was administered to two human subjects for a dynamic 90-min PET/MR brain investigation. ...

Behrooz Hooshyar Yousefi; Andre Manook; Timo Grimmer; Thomas Arzberger; Boris von Reutern; Gjermund Henriksen; Alexander Drzezga; Stefan Frster; Markus Schwaiger; Hans-Jrgen Wester

2014-12-08T23:59:59.000Z

259

Fluorine-Doped Carbon Blacks: Highly Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction  

Science Journals Connector (OSTI)

As a result of the energy crisis in the world, fuel cells are attractive as clean and sustainable energy conversion devices because they can help address the ever increasing global energy demand. ... (2, 3) To date, Pt-based materials are the most widely used electrocatalysts for ORR;(4-6) however, Pt-based catalysts suffer from problems, such as sluggish oxygen reduction at any pH, durability, very limited reserves, high cost, and inactivation by carbon monoxide (CO) poisoning. ...

Xiujuan Sun; Yuwei Zhang; Ping Song; Jing Pan; Lin Zhuang; Weilin Xu; Wei Xing

2013-07-03T23:59:59.000Z

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

Download Full-text PDF  

Science Journals Connector (OSTI)

... seawater with cium phosphates such as apatites and phos- calcium phosphates in two regions of the phorites; an ion product which in its. North Pacific Ocean.

2000-01-13T23:59:59.000Z

262

Download Full-text PDF  

Science Journals Connector (OSTI)

Carlson-type trophic state index (Carlson 1977; Kratzer and. Brezonik 1981). Dense stands of .... 3C through completion of analysis. Nitrate (NO ) and phos-. 3.

2005-10-25T23:59:59.000Z

263

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

2009-01-01T23:59:59.000Z

264

Iodine molecule for neutrino mass spectroscopy: ab initio calculation of spectral rate  

Science Journals Connector (OSTI)

......such as tritium for the measurement of an averaged absolute neutrino mass value, and (2) the search of neutrinoless double beta decay for verification of lepton number violation related to a finite Majorana type of masses. So far negative......

Motomichi Tashiro; Masahiro Ehara; Susumu Kuma; Yuki Miyamoto; Noboru Sasao; Satoshi Uetake; Motohiko Yoshimura

2014-01-01T23:59:59.000Z

265

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

266

Distribution coefficient values describing iodine, neptunium, selenium, technetium, and uranium sorption to Hanford sediments. Supplement 1  

SciTech Connect

Burial of vitrified low-level waste (LLW) in the vadose zone of the Hanford Site is being considered as a long-term disposal option. Regulations dealing with LLW disposal require that performance assessment (PA) analyses be conducted. Preliminary modeling efforts for the Hanford Site LLW PA were conducted to evaluate the potential health risk of a number of radionuclides, including Ac, Am, C, Ce, Cm, Co, Cs, Eu, 1, Nb, Ni, Np, Pa, Pb, Pu, Ra, Ru, Se, Sn, Sr, Tc, Th, U, and Zr (Piepho et al. 1994). The radionuclides, {sup 129}I, {sup 237}Np, {sup 79}Se, {sup 99}Tc, and {sup 234,235,238}U, were identified as posing the greatest potential health hazard. It was also determined that the outcome of these simulations were very sensitive to the parameter describing the extent to which radionuclides sorbed to the subsurface matrix, described as a distribution coefficient (K{sub d}). The distribution coefficient is a ratio of the radionuclide concentration associated with the solid phase to that in the liquid phase. The literature-derived K{sub d} values used in these simulations were conservative, i.e., lowest values within the range of reasonable values used to provide an estimate of the maximum health threat. Thus, these preliminary modeling results reflect a conservative estimate rather than a best estimate of what is likely to occur. The potential problem with providing only a conservative estimate is that it may mislead us into directing resources to resolve nonexisting problems.

Kaplan, D.I.; Seme, R.J.

1995-03-01T23:59:59.000Z

267

The iodineplutoniumxenon age of the MoonEarth system revisited  

Science Journals Connector (OSTI)

...to a higher thermal regime of the...Isotopic spectrum of xenon relative...Ozima. 2012 Thermal evolution of...Plutonium-fission xenon found...spallation and neutron-induced reactions...I. High-energy irradiances...

2014-01-01T23:59:59.000Z

268

Thermochemical H 2- Production with Sulfur-Iodine Process and Solar Energy Adaptation  

Science Journals Connector (OSTI)

A thermochemical cycle for hydrogen production is a process in which water is used as a feedstock along with a non-fossil high temperature heat source to produce H2 and O2 as product gases. The water splitting pr...

K. F. Knoche

1991-01-01T23:59:59.000Z

269

Carrier envelope phase stabilization of a femtosecond laser and iodine spectroscopy  

E-Print Network (OSTI)

for carrier envelope phase stabilization. An f to 2f interferometer was used to detect the carrier envelope offset frequency, and a fast photo diode was employed to measure the repetition rate. Two similar designed phase lock loops are used to stabilize both...

Zhu, Feng

2006-10-30T23:59:59.000Z

270

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

271

Enhancement of electric oxygen-iodine laser performance using a rectangular discharge and longer gain length  

E-Print Network (OSTI)

is produced by a single radio-frequency-excited electric discharge sustained in an O2­He­NO gas mixture a is produced by a single transverse capacitive 13.56 MHz rf excited electric discharge sustained in an O2­He discharge channel section has an internal flow cross section of 1.6 cm by 7.5 cm. The plasma zone filled

Carroll, David L.

272

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

273

Solar-Grade Silicon from Metallurgical-Grade Silicon Via Iodine Chemical Vapor Transport Purification: Preprint  

SciTech Connect

This conference paper describes the atmospheric-pressure in an ''open'' reactor, SiI2 transfers from a hot (>1100C) Si source to a cooler (>750C) Si substrate and decomposes easily via 2SiI2 Si+ SiI4 with up to 5?m/min deposition rate. SiI4 returns to cyclically transport more Si. When the source is metallurgical-grade Si, impurities can be effectively removed by three mechanisms: (1) differing free energies of formation in forming silicon and impurity iodides; (2) distillation; and (3) differing standard free energies of formation during deposition. Distillation has been previously reported. Here, we focused on mechanisms (1) and (3). We made feedstock, analyzed the impurity levels, grew Czochralski single crystals, and evaluated crystal and photovoltaic properties. Cell efficiencies of 9.5% were obtained. Incorporating distillation (step 2) should increase this to a viable level.

Ciszek, T. F.; Wang, T. H.; Page, M. R.; Bauer, R. E.; Landry, M. D.

2002-05-01T23:59:59.000Z

274

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

275

Prolonged survival of Pseudomonas cepacia in commercially manufactured povidone-iodine.  

Science Journals Connector (OSTI)

...facturing plant. A plant investigation was initiated to deter...would all seem prudent as remedial measures. Manu- facturers...W. J. Martone. 1984. Investigations into the survival of Pseudomonas...commercial iodophor solution: investigation of the implicated manufacturing...

R L Anderson; R W Vess; A L Panlilio; M S Favero

1990-11-01T23:59:59.000Z

276

Microhydration Effects on the Intermediates of the SN2 Reacation of Iodide Anion with Methyl Iodine  

SciTech Connect

Reactions of halide anions with methyl halides (X- + CH3Y ? XCH3 + Y-) are bimolecular nucleophilic substitution (SN2) reactions that have been well investigated in the last few decades.[1] Figure 1 shows typical potential energy surfaces (PESs) proposed for symmetric (X- + CH3X ? XCH3 + X-) SN2 reactions along the reaction coordinate. In the gas phase, the PES has two minima corresponding to the stable X-(CH3X) complexes.[2] The PES is substantially distorted by the solvation. Since the negative charge is delocalized over the [XCH3X]- moiety at the transition state the stabilization energy gained by the solvation is smaller for the transition state than that for the (X- + CH3X) reactants or the X- (CH3X) complexes. In solution, a large potential barrier exists between the reactants and products. The rate constants of these reactions in protic solvents were reported to be a few orders of magnitude smaller than those in aprotic solvents; this trend was explained by the formation of solvation shells of protic molecules around the halide anions.[1,3] Morokuma has previously reported a theoretical study on the PES of the (Cl- + CH3Cl ? ClCH3 + Cl-) SN2 reaction with a few H2O molecules. The attachment of H2O molecules to the Cl-(CH3Cl) reactive system produces metastable isomers, which affect the reaction mechanism.[4] Johnson and coworkers extensively investigated the structure and reactions of halide anion complexes in the gas phase using photodissociation spectroscopy.

Doi, Keisuke; Togano, Eijiro; Xantheas, Sotiris S.; Nakanishi, Ryuzo; Nagata, Takashi; Ebata, Takayuki; Inokuchi, Yoshiya

2013-04-15T23:59:59.000Z

277

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

278

Iodine Isotopes (127I and 129I) in Aerosols at High Altitude Alp Stations  

Science Journals Connector (OSTI)

Since there are no local pollution sources and the observatory itself is supplied with electricity through cable, the SBO has the ideal characteristics of a high alpine background station. ... In the period of Jan 16 to Feb 1 (first 129I maximum at Zugspitze) the winds came mainly from southeast to southwest, but beginning with Jan 29 the main wind direction was from northwest to west. ... Also we would expect influence from air masses with southern origin at Sonnblick, while at Zugspitze the air flow should be mainly from northwest with the exception of foehn situations (which occur more frequently during spring). ...

Tania Jabbar; Peter Steier; Gabriele Wallner; Alfred Priller; Norbert Kandler; August Kaiser

2012-07-23T23:59:59.000Z

279

Evaluation of radiation-induced myocardial damage using iodine-123 ?-methyl-iodophenyl pentadecanoic acid scintigraphy  

Science Journals Connector (OSTI)

......short follow-up period after completion of RT for cardiac dysfunction...most useful as a prognostic index for RT-induced cardiac events...has become a widely accepted index of heart failure or heart remodeling...The median interval from completion of RT to I-123 BMIPP scintigraphy......

Rei Umezawa; Kei Takase; Keiichi Jingu; Kentaro Takanami; Hideki Ota; Tomohiro Kaneta; Ken Takeda; Haruo Matsushita; Hisanori Ariga; Shoki Takahashi; Shogo Yamada

2013-09-01T23:59:59.000Z

280

NIDC: Online Catalog of Isotope Products | Product Search  

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

Product Search Product Search Step 1 - Enter your search criteria below. Element Name Actinium Aluminum Americium Antimony Argon Arsenic Astatine Barium Berkelium Beryllium Bismuth Bohrium Boron Bromine Cadmium Caesium Calcium Californium Carbon Cerium Chlorine Chromium Cobalt Copernicium Copper Curium Darmstadtium Dubnium Dysprosium Einsteinium Erbium Europium Fermium Fluorine Francium Gadolinium Gallium Germanium Gold Hafnium Hassium Helium Holmium Hydrogen Indium Iodine Iridium Iron Krypton Lanthanum Lawrencium Lead Lithium Lutetium Magnesium Manganese Meitnerium Mendelevium Mercury Molybdenum Neodymium Neon Neptunium Nickel Niobium Nitrogen Nobelium Osmium Oxygen Palladium Phosphorus Platinum Plutonium Polonium Potassium Praseodymium Promethium Protactinium Radium Radon Rhenium Rhodium Roentgenium Rubidium Ruthenium Rutherfordium Samarium Scandium Seaborgium Selenium Silicon Silver Sodium Strontium Sulfur Tantalum Technetium Tellurium Terbium Thallium Thorium Thulium Tin Titanium Tungsten Ununhexium Ununoctium Ununpentium Ununquadium Ununseptium Ununtrium Uranium Vanadium Xenon Ytterbium Yttrium Zinc Zirconium

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

NIDC: Online Catalog of Isotope Products | Request a New Product  

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

Request a New Product Request a New Product Step 1 - Enter the new product's criteria below. Element Name Actinium Aluminum Americium Antimony Argon Arsenic Astatine Barium Berkelium Beryllium Bismuth Bohrium Boron Bromine Cadmium Caesium Calcium Californium Carbon Cerium Chlorine Chromium Cobalt Copernicium Copper Curium Darmstadtium Dubnium Dysprosium Einsteinium Erbium Europium Fermium Fluorine Francium Gadolinium Gallium Germanium Gold Hafnium Hassium Helium Holmium Hydrogen Indium Iodine Iridium Iron Krypton Lanthanum Lawrencium Lead Lithium Lutetium Magnesium Manganese Meitnerium Mendelevium Mercury Molybdenum Neodymium Neon Neptunium Nickel Niobium Nitrogen Nobelium Osmium Oxygen Palladium Phosphorus Platinum Plutonium Polonium Potassium Praseodymium Promethium Protactinium Radium Radon Rhenium Rhodium Roentgenium Rubidium Ruthenium Rutherfordium Samarium Scandium Seaborgium Selenium Silicon Silver Sodium Strontium Sulfur Tantalum Technetium Tellurium Terbium Thallium Thorium Thulium Tin Titanium Tungsten Ununhexium Ununoctium Ununpentium Ununquadium Ununseptium Ununtrium Uranium Vanadium Xenon Ytterbium Yttrium Zinc Zirconium

282

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; Kfer, Karl-Heinz; Horsch, Martin; Hasse, Hans

2014-01-01T23:59:59.000Z

283

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

284

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 Stbener; Peter Klein; Karl-Heinz Kfer; Martin Horsch; Hans Hasse

2014-08-21T23:59:59.000Z

285

Fluorine Speciation Analysis Using Reverse Phase Liquid Chromatography Coupled Off-Line to Continuum Source Molecular Absorption Spectrometry (CS-MAS): Identification and Quantification of Novel Fluorinated Organic Compounds in Environmental and Biological Samples  

Science Journals Connector (OSTI)

(1-4) Perfluorinated compounds (PFCs) are especially well-known for their unusual solubility, being simultaneously hydro- and lipophobic. ... (5, 6) This recognition has triggered a boost in interest in the monitoring of PFCs in water, wildlife and food. ... Chemicals used for AAS modifiers, reported by Gleisner et al.,(17) included gallium nitride (99.9%, ...

Zhiwei Qin; David McNee; Heike Gleisner; Andrea Raab; Kwaku Kyeremeh; Marcel Jaspars; Eva Krupp; Hai Deng; Jrg Feldmann

2012-06-11T23:59:59.000Z

286

Use of a Novel Fluorinated Organosulfur Compound To Isolate Bacteria Capable of Carbon-Sulfur Bond Cleavage  

Science Journals Connector (OSTI)

...sulfone (also known as sulfolane and tetrahydrothiophene sulfone), DBT sulfone, pentafluorobenzoic...PFPSS, 1,4-dithiane, and tetrahydrothiophene sulfone, were used as sulfur sources...Variovorax sp. strain growing on tetrahydrothiophene sulfone and by Bressler et al...

Jonathan D. Van Hamme; Phillip M. Fedorak; Julia M. Foght; Murray R. Gray; Heather D. Dettman

2004-03-01T23:59:59.000Z

287

Micrometer-Sized Fluorine Doped Tin Oxide As Fast Electron Collector for Enhanced Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

And when the cycle is 2, the photovolatic characteristics of the device are much better with short-circuit current density Jsc, open circuit voltage Voc, and FF of 13.8 mA/cm2, 0.67 V, and 52%, respectively. ...

Xiao Rui Cui; Ye Feng Wang; Zhao Li; Lu Zhou; Fei Gao; Jing Hui Zeng

2014-09-16T23:59:59.000Z

288

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

289

Determination of Fluorine, Chlorine and Bromine in Household Products by means of Oxygen Bomb Combustion and Ion Chromatography  

Science Journals Connector (OSTI)

......17), and atmospheric (18) and...ultrapure water (18.2...chromatograph eluent generator cartridge...and waste water development...fluoride ions in atmospheric precipitates and natural waters. Journal...chromatograph eluent generator and an anion......

Shuai Zhang; Tianbo Zhao; Jia Wang; Xiaoling Qu; Wei Chen; Yin Han

2013-01-01T23:59:59.000Z

290

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.

291

Determination of Fluorine, Chlorine and Bromine in Household Products by means of Oxygen Bomb Combustion and Ion Chromatography  

Science Journals Connector (OSTI)

......K.L. Oxygen bomb combustion ion chromatography for...Determination of chlorine in coal by high performance...Determination of chlorine in coal by oxygen bomb-ion...Journal of Analytical Chemistry (2009) 37:1152-1156...chlorine-Oxygen flask combustion technique, SAC, Beijing......

Shuai Zhang; Tianbo Zhao; Jia Wang; Xiaoling Qu; Wei Chen; Yin Han

2013-01-01T23:59:59.000Z

292

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.

293

Direct One-Step Immobilization of Glucose Oxidase in Well-Ordered Mesostructured Silica Using a Nonionic Fluorinated Surfactant  

Science Journals Connector (OSTI)

This work describes the immobilization of glucose oxidase (GOD) in mesostructured silica. ... The appearance of secondary or interparticular porosity has been correlated with the SEM observations that show the formation of very small particles with increasing pH values of the synthesis gel. ... With the 2nd method both the nanostructure and the particle morphol. ...

J. L. Blin; C. Grardin; C. Carteret; L. Rodehser; C. Selve; M. J. Stb

2005-02-25T23:59:59.000Z

294

Reversible Oxidative Addition and Reductive Elimination of Fluorinated Disulfides at Gold(I) Thiolate Complexes: A New Ligand Exchange Mechanism  

Science Journals Connector (OSTI)

Robert E. Bachman *, Sheri A. Bodolosky-Bettis , Chelsea J. Pyle and Margaret Anne Gray ... (a) Bodolosky-Bettis, S. Gold Thiolates: Luminescent Properties and Reductive-Elimination/Oxidative Addition Processes. ... Bachman, R. E., Bodolosky-Bettis, S. A., Glennon, S. C., and Sirchio, S. A. J. Am. ...

Robert E. Bachman; Sheri A. Bodolosky-Bettis; Chelsea J. Pyle; Margaret Anne Gray

2008-10-01T23:59:59.000Z

295

Determination of Fluorine, Chlorine and Bromine in Household Products by means of Oxygen Bomb Combustion and Ion Chromatography  

Science Journals Connector (OSTI)

......circuit board a6 ND 394 11 47,144 157 Insulation material a7 2,663 16 N.D ND Computer...80,162 85 ND Rigid polyurethane foam b18 264 14 99,543 46 ND *Quintuplicate...commonly used as a foamer in thermal insulation materials. Furthermore, abundant......

Shuai Zhang; Tianbo Zhao; Jia Wang; Xiaoling Qu; Wei Chen; Yin Han

2013-01-01T23:59:59.000Z

296

Theoretical Study of the Addition Patterns of C60 Fluorination:? C60Fn (n = 1?60)  

Science Journals Connector (OSTI)

Unit de Physico-Chimie et de Physique des Matriaux (P.C.P.M.), Universit catholique de Louvain (UCL), Place Croix du Sud, 1 (Boltzmann), B-1348 Louvain-la-Neuve, Belgium; Research Group of General Chemistry (ALGC), Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050, Brussels, Belgium; Institut de Qumica Computacional and Departament de Qumica, Universitat de Girona, E-17071 Girona, Catalonia, Spain; Composite Systems and Materials Department (DMSC), ONERA BP72, 29 Avenue de la Division Leclerc, 92322 Chatillon, France; Laboratoire de Physique des Solides (LPS), Universit Paris Sud, Batiment 510, 91405 Orsay, France; and Chemistry Department, University of Sussex, Falmer, Brighton BN1 9QJ, United Kingdom ...

Gregory Van Lier; Montserrat Cases; Christopher P. Ewels; Roger Taylor; Paul Geerlings

2005-02-04T23:59:59.000Z

297

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

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

298

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

299

Meta-Analysis of Arabidopsis thaliana Phospho-Proteomics Data Reveals Compartmentalization of Phosphorylation Motifs  

Science Journals Connector (OSTI)

...accessible through the joint portal of MASCP Gator (Joshi et al., 2011). Several plant p-proteomics...Arabidopsis proteome aggregator database MASCP Gator (Joshi et al., 2011) at http://gator.masc-proteomics.org/ . In PhosPhAt...

Klaas J. van Wijk; Giulia Friso; Dirk Walther; Waltraud X. Schulze

2014-06-03T23:59:59.000Z

300

Loss of High-Energy Phosphate following Hyperthermia Demonstrated by in Vivo 31P-Nuclear Magnetic Resonance Spectroscopy  

Science Journals Connector (OSTI)

...even after substantial heat exposure. An obvious...discrepancy is that the loss of high-energy phos...correlation between loss of ATP, cell kill, and heat dose, when compared...Inhomogenous heat distribution, variable metabolic...

Michael B. Lilly; Thian C. Ng; William T. Evanochko; Charles R. Katholi; Narinder G. Kumar; Gabriel A. Elgavish; John R. Durant; Raymond Hiramoto; Vithal Ghanta; and Jerry D. Glickson

1984-02-01T23:59:59.000Z

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.


301

Biotechnological storage and utilization of entrapped solar energy  

Science Journals Connector (OSTI)

Our laboratory has recently developed a device employing immobilized F0F1...adenosine triphosphatase (ATPase) that allows synthesis of adenosine triphosphate (ATP) from adenosine 5?-diphosphate and inorganic phos...

Sumana Bhattacharya; Marc Schiavone; Amiya Nayak

2005-03-01T23:59:59.000Z

302

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.

303

ABSTRACTS:  

Science Journals Connector (OSTI)

......Then the tissues were brought into room temperature and hydrated with cacodylate buffer...one of the purified mold lipases and snake venom phos- pholipases, respectively...from known amino acid sequence. 11. Development of quantitative immunoelectron mi- croscopy......

The Thirty-first Symposium of the Japanese Society of Electron Microscopy Held at Faculty of Engineering; University of Tokyo; Tokyo; Japan October 17-18; 1985 Main Theme: Localization of Constituents

1986-01-01T23:59:59.000Z

304

A Matrix Isolation Study of the Photochemically Induced Reactions of Ozone with Iodine Cyanide and Bromine Cyanide  

Science Journals Connector (OSTI)

Robin J. H. Clark ,* Loraine J. Foley , and Stephen D. Price ... Clark, Robin J. H.; Dann, Jonathan R.; Foley, Loraine J. ... Clark, Robin J. H.; Dann, Jonathan R.; Foley, Loraine J. ...

Robin J. H. Clark; Loraine J. Foley; Stephen D. Price

2000-10-21T23:59:59.000Z

305

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

E-Print Network (OSTI)

Crockshank0 Mr, Jo P? Smith and their Vi 3 NA assistants fcr their help and cooperation at the PanTech Farms Amarillo,, Texas; D r 0 Tom G, Cartwright and assistants for their help and cooperation, Nj at Substation 239 McGregor9 Texas; Mr? John K? Riggs... Experiment Station, Substation 23, McGregor, Texas, and the PanTech .Farm, Amarillo, Texas, respectively? The third group consisted of animals that were, purchased by the Department of Animal Husbandry, A? and M 0 College of Texas, for demons tr a tiona.1...

Green, George G.

2013-10-04T23:59:59.000Z

306

The effect of vitamin B 12 and various levels of iodine in the diet of growing chicks and mature hens  

E-Print Network (OSTI)

. "sent in fish meal a. ;d brews" yeast (Carlsox' ct al, . '940), liver and dolactosed ilried whey (Menge, *"onibs and dhorb, 1949), fish soiubles (eundo ct al. , . ' 350) anti distillors solubles (iNorris ot al. , 1950). The offcut of vitamin D, 2... deiactosed whey, as shown in 'l'able IH. Tbe hens were artHiclaQy insemhated twice each week with 0. s ml. oi pooled semen iron: New Hampshire '. iales. The eggs were gathered daily, marked with hen number and dat' andstored bi a constant tempera- ture...

Banta, Edward Mack

2012-06-07T23:59:59.000Z

307

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

E-Print Network (OSTI)

&iocasein caused no chango in egg p"eduction i&i&en fc&3 by (?itt&. ridge and Novi!&off (1&347), . &ilson (1&34&3) and Iianson and Smyth (1'355) at 200 grims per tor. . -gg production w:is not affected wTi &n iodinai, =d ca cirl w'is f&'d b) oillie et al...&iocasein caused no chango in egg p"eduction i&i&en fc&3 by (?itt&. ridge and Novi!&off (1&347), . &ilson (1&34&3) and Iianson and Smyth (1'355) at 200 grims per tor. . -gg production w:is not affected wTi &n iodinai, =d ca cirl w'is f&'d b) oillie et al...

Young, Louis Lee

2012-06-07T23:59:59.000Z

308

Novel Parameter Predicting Grade 2 Rectal Bleeding After Iodine-125 Prostate Brachytherapy Combined With External Beam Radiation Therapy  

SciTech Connect

Purpose: To propose a novel parameter predicting rectal bleeding on the basis of generalized equivalent uniform doses (gEUD) after {sup 125}I prostate brachytherapy combined with external beam radiation therapy and to assess the predictive value of this parameter. Methods and Materials: To account for differences among radiation treatment modalities and fractionation schedules, rectal dosevolume histograms (DVHs) of 369 patients with localized prostate cancer undergoing combined therapy retrieved from corresponding treatment planning systems were converted to equivalent dose-based DVHs. The gEUDs for the rectum were calculated from these converted DVHs. The total gEUD (gEUD{sub sum}) was determined by a summation of the brachytherapy and external-beam radiation therapy components. Results: Thirty-eight patients (10.3%) developed grade 2+ rectal bleeding. The grade 2+ rectal bleeding rate increased as the gEUD{sub sum} increased: 2.0% (2 of 102 patients) for <70 Gy, 10.3% (15 of 145 patients) for 70-80 Gy, 15.8% (12 of 76 patients) for 80-90 Gy, and 19.6% (9 of 46 patients) for >90 Gy (P=.002). Multivariate analysis identified age (P=.024) and gEUD{sub sum} (P=.000) as risk factors for grade 2+ rectal bleeding. Conclusions: Our results demonstrate gEUD to be a potential predictive factor for grade 2+ late rectal bleeding after combined therapy for prostate cancer.

Shiraishi, Yutaka, E-mail: shiraishi@rad.med.keio.ac.jp [Department of Radiology, Keio University School of Medicine, Tokyo (Japan); Hanada, Takashi; Ohashi, Toshio [Department of Radiology, Keio University School of Medicine, Tokyo (Japan); Yorozu, Atsunori; Toya, Kazuhito [Department of Radiology, National Hospital Organization Tokyo Medical Center, Tokyo (Japan); Saito, Shiro [Department of Urology, National Hospital Organization Tokyo Medical Center, Tokyo (Japan); Shigematsu, Naoyuki [Department of Radiology, Keio University School of Medicine, Tokyo (Japan)

2013-09-01T23:59:59.000Z

309

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

SciTech Connect

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

310

Relation between clinical and laboratory parameters with radiation dose rates from patients receiving iodine-131 therapy for thyroid carcinoma  

Science Journals Connector (OSTI)

......educate every patient on radiation safety procedures for the dosage...improvised containers; the safety officer transferred...origin of emission, and radiation detection survey metre...significant. SPSS for Windows software package (Release 11......

Isa Neshandar Asli; Nastaran Baharfard; Babak Shafiei; Faraj Tabei; Hamid Javadi; Mohammad Seyedabadi; Iraj Nabipour; Majid Assadi

2010-03-01T23:59:59.000Z

311

Radioactive iodine (131I) therapy for differentiated thyroid cancer in Japan: current issues with historical review and future perspective  

Science Journals Connector (OSTI)

Finally, we are looking forward to receiving international supports abroad. The situation in Fukushima is changing every day and people in Fukushima are still now confronting a variety of...55...]. Due to their o...

Tatsuya Higashi; Takashi Kudo; Seigo Kinuya

2012-02-01T23:59:59.000Z

312

Proteins iodinated by the Chloramine-T method appear to be degraded at an abnormally rapid rate after endocytosis  

Science Journals Connector (OSTI)

...of Biomedical Sciences, and Biology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 Communicated by Alexander Hollaender...yolk proteins lipovitellin and phosvitin. These workers demonstrated that 96% of the radioactivity contained...

L. Opresko; H. S. Wiley; R. A. Wallace

1980-01-01T23:59:59.000Z

313

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

E-Print Network (OSTI)

salt used as a source of thallous ion. Thus, we were confined, at any tempera- ture, within certain limits of [I ], the lower limit being governed by solubility of T1NO and salt effect; and the upper by the possibility of occurence of Reac- tions B... salt used as a source of thallous ion. Thus, we were confined, at any tempera- ture, within certain limits of [I ], the lower limit being governed by solubility of T1NO and salt effect; and the upper by the possibility of occurence of Reac- tions B...

Simic, Radmilo

2012-06-07T23:59:59.000Z

314

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

E-Print Network (OSTI)

County using boron isotopes and general geochemistry, In Lawrence Livermore National Laboratory UCRL-ID-133529 (pp. 44). ? Davisson, M.L., Hudson, G.B., Herndon, R., & Woodside, G. (1999b). Report on isotope tracer investigations in the Forebay... of the Orange County Groundwater Basin: Fiscal years 1996 and 1997, In Lawrence Livermore National Laboratory UCRL-ID- 133531 (pp. 44). ? Dissanayake, C.B. & Chandrajith, R. (1999). Medical geochemistry of tropical environments. Earth-Science Reviews 47, 219...

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

2003-01-01T23:59:59.000Z

315

Fallout of atmospheric nuclear tests in 1950s and 1960s exposed more people to Iodine-131 than Chernobyl accident  

SciTech Connect

A National Cancer Institute report on I-131 radiation exposure from atmospheric nuclear weapon tests in the USA is summarized. (AIP)

Goodwin, I. [Physics Today, American Center for Physics, One Physics Ellipse, College Park, Maryland 20740-3843 (United States)

1997-09-01T23:59:59.000Z

316

SCENARIOS FOR MEETING CALIFORNIA'S 2050 CLIMATE GOALS California's Carbon Challenge Phase II Volume I: Non-Electricity Sectors and Overall Scenario Results  

E-Print Network (OSTI)

atmosphere. Some fluorinated compounds can also be transformed into other compounds during the plasma

Wei, Max

2014-01-01T23:59:59.000Z

317

REPORT OF THE SURFACE SCIENCE WORKSHOP  

E-Print Network (OSTI)

alkali, fluorine, water electrolysis) Problem: to reducepermit the photo- electrolysis of water with the production

Somorjai, G.A.

2010-01-01T23:59:59.000Z

318

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

319

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

320

A fluorine-labeled methotrexate as a probe for monitoring tumor antifolate pharmacokinetics: Synthesis, in vitro cytotoxicity, and pilot in vivo 19F magnetic resonance spectra  

Science Journals Connector (OSTI)

...humidified 5 CO2 atmosphere. For cytotoxicity...dissolved in blood plasma was placed in the...performed at 188 MHz (B 0 = 4.7 T...dissolved in blood plasma at 37C and 4.7...FMTX in a blood plasma phantom sample at...amine was done at atmospheric pressure and RT...

William M. Spees; Guangli Yang; Darren Veach; Maria Belen Rubio; Jason A. Koutcher; and William Bornmann

2003-10-01T23:59:59.000Z

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.


321

Anticancer steroid sulfatase inhibitors: synthesis of a potent fluorinated second-generation agent, in vitro and in vivo activities, molecular modeling, and protein crystallography  

Science Journals Connector (OSTI)

...spectrometer at 270, 67.9, and 376 MHz, respectively, and chemical...chromatography-mass spectrometry (atmospheric pressure chemical ionization...chromatography-mass spectrometry (atmospheric pressure), m/z 394.26...unsequestered ligand in the plasma over time. Hence, and given...

L.W. Lawrence Woo; Delphine S. Fischer; Christopher M. Sharland; Melanie Trusselle; Paul A. Foster; Surinder K. Chander; Anna Di Fiore; Claudiu T. Supuran; Giuseppina De Simone; Atul Purohit; Michael J. Reed; and Barry V.L. Potter

2008-08-01T23:59:59.000Z

322

A fluorine-labeled methotrexate as a probe for monitoring tumor antifolate pharmacokinetics: Synthesis, in vitro cytotoxicity, and pilot in vivo 19F magnetic resonance spectra  

Science Journals Connector (OSTI)

...washing with cold water provided the final...susceptibility matching water bath (16). For...the inversion-recovery pulse sequence...Figure 3. Inversion recovery data fit to Eq...amine was done at atmospheric pressure and RT...7 in 90 yield. Condensation with 6-(bromomethyl...

William M. Spees; Guangli Yang; Darren Veach; Maria Belen Rubio; Jason A. Koutcher; and William Bornmann

2003-10-01T23:59:59.000Z

323

Targeting Metal-A? Aggregates with Bifunctional Radioligand [11C]L2-b and a Fluorine-18 Analogue [18F]FL2-b  

Science Journals Connector (OSTI)

Autoradiography experiments with AD positive and healthy control brain samples were used to determine the specificity of binding for the radioligands compared to [11C]PiB, a known imaging agent for ?-amyloid (A?) aggregates. ... Displacement studies of [11C]L2-b and [18F]FL2-b with PiB and AV-45 determined that L2-b binds to A? aggregates differently from known radiopharmaceuticals. Finally, brain uptake of [11C]L2-b was examined through microPET imaging in healthy rhesus macaque, which revealed a maximum uptake at 2.5 min (peak SUV = 2.0) followed by rapid egress (n = 2). ...

Brian P. Cary; Allen F. Brooks; Maria V. Fawaz; Xia Shao; Timothy J. Desmond; Garrett M. Carpenter; Phillip Sherman; Carole A. Quesada; Roger L. Albin; Peter J. H. Scott

2014-11-09T23:59:59.000Z

324

Photocatalytic Reduction of CO2 in Aqueous Solution on Surface-Fluorinated Anatase TiO2 Nanosheets with Exposed {001} Facets  

Science Journals Connector (OSTI)

Bhattacharyya, K.; Danon, A.; Vijayan, B. K.; Gray, K. A.; Stair, P. C.; Weitz, E.Role of the Surface Lewis Acid and Base Sites in the Adsorption of CO2 on Titania Nanotubes and Platinized Titania Nanotubes: An In Situ FT-IR Study J. Phys. ... Bhattacharyya, Kaustava; Danon, Alon; Vijayan, Baiju K.; Gray, Kimberly A.; Stair, Peter C.; Weitz, Eric ...

Zhiqiao He; Lina Wen; Da Wang; Yijun Xue; Qianwen Lu; Cuiwei Wu; Jianmeng Chen; Shuang Song

2014-05-19T23:59:59.000Z

325

The Role of Dynamic Positron Emission Tomography for Quantifying Boron-10 in Vivo Using the Fructose Complex of Fluorine-18 Labeled Boronophenylalanine  

Science Journals Connector (OSTI)

One of the major difficulties facing successful boron neutron capture therapy (BNCT) is the paucity of in vivo pharmacokinetic data.1 Analytical techniques such as prompt gamma analysis, secondary ion mass spectr...

G. W. Kabalka; G. T. Smith; T. L. Nichols

2001-01-01T23:59:59.000Z

326

Understanding APIPolymer Proximities in Amorphous Stabilized Composite Drug Products Using FluorineCarbon 2D HETCOR Solid-State NMR  

Science Journals Connector (OSTI)

The procedure of the preparation of avagacestat, the API, has been described by Gillman et al.(19) The SDD was prepared in the course of experimental drug development in collaboration with Bend Research, Bend, OR. ... Gillman, K. W.; Starrett, J. E.; Parker, M. F.; Xie, K.; Bronson, J. J.; Marcin, L. R.; McElhone, K. E.; Bergstrom, C. P.; Mate, R. A.; Williams, R.; Meredith, J. E.; Burton, C. R.; Barten, D. M.; Toyn, J. H.; Roberts, S. B.; Lentz, K. A.; Houston, J. G.; Zaczek, R.; Albright, C. F.; Decicco, C. P.; Macor, J. E.; Olson, R. E.Discovery and Evaluation of BMS-708163, a Potent, Selective and Orally Bioavailable ?-Secretase Inhibitor ACS Med. ... Gillman, Kevin W.; Starrett, John E.; Parker, Michael F.; Xie, Kai; Bronson, Joanne J.; Marcin, Lawrence R.; McElhone, Kate E.; Bergstrom, Carl P.; Mate, Robert A.; Williams, Richard; Meredith, Jere E.; Burton, Catherine R.; Barten, Donna M.; Toyn, Jeremy H.; Roberts, Susan B.; Lentz, Kimberley A.; Houston, John G.; Zaczek, Robert; Albright, Charles F.; Decicco, Carl P.; Macor, John E.; Olson, Richard E. ...

Anuji Abraham; George Crull

2014-08-22T23:59:59.000Z

327

C20H4(C4F8)3: A Fluorine-Containing Annulated Corannulene that Is a Better Electron Acceptor Than C60  

SciTech Connect

There has been increased interest in the design and applications of small polyaromatic molecules for energy conversion and storage, organic transistors and OLEDs, and other emerging areas of modern technology.[1] In particular, functionalized polycyclic aromatic hydrocarbons (PAHs) were shown to demonstrate excellent electrical mobilities, in organic thin-film transistors, in some cases even under ambient conditions.[2] It has been suggested that air stability of such organic materials is correlated with their electronic properties, and more specifically, with a high electron affinity.[3] Until recently, geodesic PAHs, such as corannulene[4] or sumanene[5] and their numerous derivatives have not been seriously considered for optoelectronic applications because (i) they typically possess very low electron affinities (e.g., EA(C20H10) = 0.5(1) eV),[6] and (ii) laborious multistep syntheses with moderate-to-low yields made them practically unavailable for such studies.[7] Although the low availability of sumanene remains unchanged, significant progress has been made lately in the large-scale synthesis of corannulene.[8] Furthermore, our recent work demonstrated that functionalization of corannulene molecule with electron withdrawing groups (EWGs) results in drastic enhancement of its electron acceptor properties.[9] In particular, for trifluoromethylated derivative C20H5(CF3)5, a 950 mV positive shift in the reduction potential relative to the parent C20H10 was measured. We also predicted that other EWGs, including halogen atoms or cyanide group, could be used to enhance electron affinity of corannulene. Nearly linear correlation between the number of EWGs and the electron affinity (reduction potential) of the corresponding EWG-substituted corannulene molecules that was demonstrated by our DFT calculations, and, more recently, confirmed for C20H10-x(CF3)x=2,3,[10] provides a good tool for design of the molecules with desired electronic properties. Here, we report the first synthesis, structure, and electronic properties (in solution and in the gas phase) of the derivative of corannulene, which has a higher electron affinity (EA) than a well-studied acceptor fullerene C60

Kuvychko, Igor V.; Dubceac, Cristina; Deng, Shihu; Wang, Xue B.; Granovsky, Alexander A.; Popov, Alexey A.; Petrukhina, Marina A.; Strauss, Steven H.; Boltalina, Olga V.

2013-07-15T23:59:59.000Z

328

Use of Fluorinated Compounds To Detect Aromatic Metabolites from m-Cresol in a Methanogenic Consortium: Evidence for a Demethylation Reaction  

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...abundant phenols in waste- waters from hydrocarbon...such as coking, gasification, and liquefaction...wastewaters from coal gasification processes. Int...The treatment of wastes from the synthetic fuels industry, p. 65-129...

Kathleen L. Londry; Phillip M. Fedorak

1993-07-01T23:59:59.000Z

329

Highly regioselective SN2? reaction of ?-fluoroallylic phosphates with organocopper reagents and its application to the synthesis of fluorine-containing carbocycles  

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Abstract Treatment of ?-fluoroallyl phosphates with 2.2 equiv. of organocuprates, prepared readily from 2.2 equiv. each of CuCN and organometallics (organolithium reagents, Grignard reagents, and organozinc reagents), in THF at ?40 to 0C for 0.25 to 24h gave ?-products in a highly regioselective manner. Thus obtained ?-adducts were subjected to the ring-closing metathesis, the corresponding cyclic fluoroalkenes being afforded in good yields.

Takashi Nihei; Yusuke Kubo; Takashi Ishihara; Tsutomu Konno

2014-01-01T23:59:59.000Z

330

Toxoplasma gondii Oocysts in Water  

E-Print Network (OSTI)

Pavlo. 2005. Do iodine water purification tablets provide an1997. Efficacy of iodine water purification tablets againstwater: 1) concentration and filtration, 2) elution and purification

Wainwright, Katlyn E.

2008-01-01T23:59:59.000Z

331

Fluorspar  

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

Fluorspar Fluorspar Nature Bulletin No. 361-A December 6, 1969 Forest Preserve District of Cook County George W. Dunne, President Roland F. Eisenbeis, Supt. of Conservation FLUORSPAR Among all the states, Illinois stands at the top or very near the top in its production of corn, hogs, soybeans, oats and chickens. The same is true in industries: meat packing, steel, agricultural machinery, tractors, radios, telephones, paint, candy and many others. It is one of the leading producers of coal. Not commonly known, however, is the fact that the world's largest fluorite mines are located in Pope and Hardin counties along the Ohio River, and few people realize what an important part this mineral plays in our daily lives. Chlorine, bromine, iodine and fluorine are chemical elements always found in combination with some metal. Common salt is chloride of sodium. Fluorspar, or Fluorite, is fluoride of calcium. Although quite common, occurring in several states and in foreign countries, there are few deposits with veins large enough to be mined commercially. Almost half of what is used in this country comes from southern Illinois and most of the remainder from Kentucky, just across the river. It is mined from veins as much as 800 feet below the surface.

332

It's Elemental - The Periodic Table of Elements - Elements Listed by Atomic  

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

Atomic Number Atomic Number 1 Hydrogen H 2 Helium He 3 Lithium Li 4 Beryllium Be 5 Boron B 6 Carbon C 7 Nitrogen N 8 Oxygen O 9 Fluorine F 10 Neon Ne 11 Sodium Na 12 Magnesium Mg 13 Aluminum Al 14 Silicon Si 15 Phosphorus P 16 Sulfur S 17 Chlorine Cl 18 Argon Ar 19 Potassium K 20 Calcium Ca 21 Scandium Sc 22 Titanium Ti 23 Vanadium V 24 Chromium Cr 25 Manganese Mn 26 Iron Fe 27 Cobalt Co 28 Nickel Ni 29 Copper Cu 30 Zinc Zn 31 Gallium Ga 32 Germanium Ge 33 Arsenic As 34 Selenium Se 35 Bromine Br 36 Krypton Kr 37 Rubidium Rb 38 Strontium Sr 39 Yttrium Y 40 Zirconium Zr 41 Niobium Nb 42 Molybdenum Mo 43 Technetium Tc 44 Ruthenium Ru 45 Rhodium Rh 46 Palladium Pd 47 Silver Ag 48 Cadmium Cd 49 Indium In 50 Tin Sn 51 Antimony Sb 52 Tellurium Te 53 Iodine I 54 Xenon Xe 55 Cesium Cs 56 Barium Ba 57 Lanthanum La 58 Cerium Ce

333

It's Elemental - The Periodic Table of Elements - Elements Listed by  

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

Chemical Name Chemical Name Actinium Ac 89 Aluminum Al 13 Americium Am 95 Antimony Sb 51 Argon Ar 18 Arsenic As 33 Astatine At 85 Barium Ba 56 Berkelium Bk 97 Beryllium Be 4 Bismuth Bi 83 Bohrium Bh 107 Boron B 5 Bromine Br 35 Cadmium Cd 48 Calcium Ca 20 Californium Cf 98 Carbon C 6 Cerium Ce 58 Cesium Cs 55 Chlorine Cl 17 Chromium Cr 24 Cobalt Co 27 Copernicium Cn 112 Copper Cu 29 Curium Cm 96 Darmstadtium Ds 110 Dubnium Db 105 Dysprosium Dy 66 Einsteinium Es 99 Erbium Er 68 Europium Eu 63 Fermium Fm 100 Flerovium Fl 114 Fluorine F 9 Francium Fr 87 Gadolinium Gd 64 Gallium Ga 31 Germanium Ge 32 Gold Au 79 Hafnium Hf 72 Hassium Hs 108 Helium He 2 Holmium Ho 67 Hydrogen H 1 Indium In 49 Iodine I 53 Iridium Ir 77 Iron Fe 26 Krypton Kr 36 Lanthanum La 57 Lawrencium Lr 103 Lead Pb 82 Lithium Li 3 Livermorium Lv 116

334

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

SciTech Connect

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

335

It's Elemental - The Periodic Table of Elements - Elements Listed by  

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

Chemical Symbol Chemical Symbol Ac Actinium 89 Ag Silver 47 Al Aluminum 13 Am Americium 95 Ar Argon 18 As Arsenic 33 At Astatine 85 Au Gold 79 B Boron 5 Ba Barium 56 Be Beryllium 4 Bh Bohrium 107 Bi Bismuth 83 Bk Berkelium 97 Br Bromine 35 C Carbon 6 Ca Calcium 20 Cd Cadmium 48 Ce Cerium 58 Cf Californium 98 Cl Chlorine 17 Cm Curium 96 Cn Copernicium 112 Co Cobalt 27 Cr Chromium 24 Cs Cesium 55 Cu Copper 29 Db Dubnium 105 Ds Darmstadtium 110 Dy Dysprosium 66 Er Erbium 68 Es Einsteinium 99 Eu Europium 63 F Fluorine 9 Fe Iron 26 Fl Flerovium 114 Fm Fermium 100 Fr Francium 87 Ga Gallium 31 Gd Gadolinium 64 Ge Germanium 32 H Hydrogen 1 He Helium 2 Hf Hafnium 72 Hg Mercury 80 Ho Holmium 67 Hs Hassium 108 I Iodine 53 In Indium 49 Ir Iridium 77 K Potassium 19 Kr Krypton 36 La Lanthanum 57 Li Lithium 3 Lr Lawrencium 103

336

Characterization of a New Charge Sensitive Preamplifier (CSP) for the Electromagnetic Calorimeters of the ALICE Experiment  

SciTech Connect

The ALICE calorimeters PHOS and EMCal (including its extension DCal) are based on Avalanche Photo-Diode (APD) photosensors with Charge Sensitive Preamplifiers (CSPs) for readout of the scintillating elements. A new CSP has been developed on the basis of the design of the PHOS CSP, but modified to meet the requirements of the EMCal and DCal. Modifications were made specifically for a different APD choice with different characteristics, and also with the goals of less noise, faster rise time, and reduced cost. This paper presents a detailed description of the new CSP features and the test results.

Wang, Yaping [Inst. of Particle Physics/Key Lab. of Quark and Lepton Physics, Central China Normal Univ., Wuhan, C; Muller, Hans [CERN, Geneva, Switzerland; Cai, Xu [Inst. of Particle Physics/Key Lab. of Quark and Lepton Physics, Central China Normal Univ., Wuhan, C; Zhou, Daicui [Inst. of Particle Physics/Key Lab. of Quark and Lepton Physics, Central China Normal Univ., Wuhan, C; Awes, Terry C [ORNL; Yin, Zhongbao [Inst. of Particle Physics/Key Lab. of Quark and Lepton Physics, Central China Normal Univ., Wuhan, C

2012-01-01T23:59:59.000Z

337

Photovoltaics: Cheap, colourful solar cells  

Science Journals Connector (OSTI)

... composed of lead; methylammonium; and iodine or bromine, or both. Semiconductors used in solar ...solarcells ...

2013-04-17T23:59:59.000Z

338

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

339

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

E-Print Network (OSTI)

J. , Troe, J. , ,and Wallington, T. J. : Evaluated kinetic12/1423/2012/ Bilde, M. , Wallington, T. J. , Ferronato,

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

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

Continuous-wave laser oscillation in subsonic flow on the 1315 nm atomic iodine transition pumped by electric discharge produced O2,,a 1  

E-Print Network (OSTI)

of the experimental setup is shown in Fig. 1. A radio frequency rf electric discharge at 13.56 MHz operating between a 1 produced by a radio-frequency-excited electric discharge. The electric discharge was sustained two internal hollow cathode electrodes was used as the excitation source. The plasma zone

Carroll, David L.

342

Development and comparison of computational models for estimation of absorbed organ radiation dose in rainbow trout (Oncorhynchus mykiss) from uptake of iodine-131  

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Abstract This study develops and compares different, increasingly detailed anatomical phantoms for rainbow trout (Oncorhynchus mykiss) for the purpose of estimating organ absorbed radiation dose and dose rates from 131I uptake in multiple organs. The models considered are: a simplistic geometry considering a single organ, a more specific geometry employing additional organs with anatomically relevant size and location, and voxel reconstruction of internal anatomy obtained from CT imaging (referred to as CSUTROUT). Dose Conversion Factors (DCFs) for whole body as well as selected organs of O.mykiss were computed using Monte Carlo modeling, and combined with estimated activity concentrations, to approximate dose rates and ultimately determine cumulative radiation dose (?Gy) to selected organs after several half-lives of 131I. The different computational models provided similar results, especially for source organs (less than 30% difference between estimated doses), and whole body \\{DCFs\\} for each model (?3נ10?3?Gyd?1perBqkg?1) were comparable to \\{DCFs\\} listed in ICRP 108 for 131I. The main benefit provided by the computational models developed here is the ability to accurately determine organ dose. A conservative mass-ratio approach may provide reasonable results for sufficiently large organs, but is only applicable to individual source organs. Although CSUTROUT is the more anatomically realistic phantom, it required much more resource dedication to develop and is less flexible than the stylized phantom for similar results. There may be instances where a detailed phantom such as CSUTROUT is appropriate, but generally the stylized phantom appears to be the best choice for an ideal balance between accuracy and resource requirements.

N.E. Martinez; T.E. Johnson; K. Capello; J.E. Pinder III

2014-01-01T23:59:59.000Z

343

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

344

Nucleophilic vinylic substitutions of (Z)-(2-aroyloxyvinyl)phenyl-?3-iodanes with tetrabutylammonium halides: vinylic SN2 reactions and ligand coupling on iodine(III)  

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Treatment of (Z)-(?-benzoyloxyvinyl)phenyl-?3-iodanes, readily prepared from ethynyl(phenyl)(tetrafluoroborato)-?3-iodane via stereoselective Michael-type addition of benzoic acids in methanol in the presence of sodium benzoates, with tetrabutylammonium halides in THF at 65C results in a vinylic SN2 reaction to give the inverted (E)-?-benzoyloxyvinyl halides in high yields.

Masahito Ochiai; Yoshio Nishi; Masaya Hirobe

2005-01-01T23:59:59.000Z

345

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

346

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

347

Kinetic and equilibrium studies of fluoride sorption onto surfactant-modified smectites  

Science Journals Connector (OSTI)

...formulae of saturated smectites were derived from the chemical composition found using an Atomic Absorption Spectrophotometer (AAS...Advances in Fluorine Science, Fluorine and the Environment, Agrochemicals, Archaeology, Green Chemistry Water , 2 . Elsevier. Unuabonah...

S. Gamoudi; N. Frini-Srasra; E. Srasra

348

THE CENSUS OF 1930  

Science Journals Connector (OSTI)

...of California, to a site not yet selected, to...at-mnosphere. THE ELECTROLYTIC PRODUCTION OF FLUORINE FLUORINE...that do not react to electricity. Fluorine, however...cities such as Chicago, Kansas City, Syracuse, Denver...prehistoric animals at the same site, also announces a discovery...

1929-06-07T23:59:59.000Z

349

ABSTRACT:  

Science Journals Connector (OSTI)

......was developed on Ihe around of H similar principle to that of aerial survey and was applied to measurements of the rat and mouse...acid phos- phatase) activity in chicken bone tissues. Osamu Fukushima, Hlroshi Yamashlta and Carol V. Gay Dept.Anat.Jikei Univ......

The Forty-seventh Annual Meeting of the Japanese Society of Electron Microscopy

1991-08-01T23:59:59.000Z

350

Effect of Prolactin on Growth and the Estrogen Receptor Level of Human Breast Cancer Cells (MCF-7)  

Science Journals Connector (OSTI)

...enzyme or by the elevation of cAMP phos phodiesterase activity...enzymes such as thymidine kinase. cAMP has been implicated in tumor...Whether the endogenous level of cAMP is related to the effect of...106. New York: Appleton-Century-Crofts, 1971. 8. Godefroi...

Samir Shafie and S. C. Brooks

1977-03-01T23:59:59.000Z

351

The Chemi-Ionization Detector: A Flameless Ionization Detector  

Science Journals Connector (OSTI)

......phos- JOURNAL OF CHROMATOGRAPHIC SCIENCE VOL 8 AUGUST 1970 465 0 0 0 0000000 0 0 O C g 0 0 20 0 CsBr HEATER ON SAMPLE HEATER ON 60 SAMPLE HEATER OFF SAMPLE HEATER ON CsBr HEATER OFF 4 20 24 NAR I RITE VYCOR TUBE 00000000/100000000000 N2......

Martin Scolnick

1970-08-01T23:59:59.000Z

352

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

353

Supporting Information Halevy et al. 10.1073/pnas.1109444108  

E-Print Network (OSTI)

and Purification. We performed three stepped phos- phoric acid digestions of gently crushed bulk Allan Hills 84001 (ALH84001) at a temperature of 90 ? 1 °C, each consisting of three digestion steps. The aliquot weights for more than 16 h before being dropped into the acid. The CO2 evolved from acid digestion was continuously

Fischer, Woodward

354

Chemical Geology, 112 ( 1994 ) 91-104 91 Elsevier Science B.V., Amsterdam  

E-Print Network (OSTI)

August 1987 from eight stations along the longitudinal salinity gradient of the Beaulieu River Estuary the effectof salinity, agitation, biological activity, addition of a carbon source and degree of water of changing salinity on phos- 0009-2541/94/$07.00 © 1994 Elsevier Science B.V. All rights reserved. SSDI 0009

Canberra, University of

355

Regulation of the Chlamydomonas Cell Cycle by a Stable, Chromatin-Associated Retinoblastoma Tumor Suppressor Complex  

Science Journals Connector (OSTI)

...blotted to Immobilon-P PVDF membranes (Millipore) in 10 mM Tris, 100 mM Gly, and 10% methanol for 45 min at 400 mA with an Xcel-Blot apparatus (Invitrogen). Phos-Tag gels were incubated for 10 min in transfer buffer with 1 mM EDTA, washed twice...

Bradley J.S.C. Olson; Michael Oberholzer; Yubing Li; James M. Zones; Harjivan S. Kohli; Katerina Bisova; Su-Chiung Fang; Jill Meisenhelder; Tony Hunter; James G. Umen

2010-10-26T23:59:59.000Z

356

Inositol phosphates in the environment  

Science Journals Connector (OSTI)

...the numbering system, the reader is...cereal grains (Wheeler & Ferrel 1971...matter in aquatic systems (Anderson et...a comparative study of the adsorptive...magnetic resonance study of the phos...grassland farming systems in the UK. Soil...L. D. L. Foster & J. A. Dearing...

2002-01-01T23:59:59.000Z

357

The importance of intrinsic disorder for protein phosphorylation  

E-Print Network (OSTI)

The importance of intrinsic disorder for protein phosphorylation Lilia M. Iakoucheva, Predrag-based tool for the prediction of protein phos- phorylation sites, DISPHOS (DISorder-enhanced PHOSphorylation are very similar to those of intrinsically disordered protein regions. Thus, DISPHOS uses position

Radivojac, Predrag

358

J. N. Am. Benthol. Soc., 1992, 11(4):405-419 ? 1992 by The North American Benthological Society  

E-Print Network (OSTI)

reactive phosphorus (SRP)concentrations also decreased along the transect. During the period from June exhibited longitudinal trends. Re- gressions between phosphatase activity and streamwater SRP concentration and between phos- phorus content and streamwater SRP were highly significant for all data combined, with SRP

Rosemond, Amy Daum

359

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

360

Biodegradation of organic compounds in vadose zone and aquifer sediments.  

Science Journals Connector (OSTI)

...rotary head. Conventional, steam-cleaned, hollow-stem augers...phos- phorus, by using the ignition method (34); total nitrogen...mineral nitrogen, by using steam distillation (22); and exchangeable...substrates. This suggestion is based on the assumption that the affinities...

A Konopka; R Turco

1991-08-01T23:59:59.000Z

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.


361

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

362

Zone Melting  

Science Journals Connector (OSTI)

...four-turn induction coils of water-cooled copper tubing...by introducing a bit of water vapor into the hydrogen...apparatus (6). The water vapor combines with the...indium antimo-nide, gallium arsenide, gallium phos-phide...

W. G. Pfann

1962-03-30T23:59:59.000Z

363

Different central nervous system cell types display distinct and nonrandom arrangements of satellite DNA sequences  

Science Journals Connector (OSTI)

...Digestion was termi- nated by washing sections (3 times for 10 min each) in phos- phate-buffered saline containing 5 mM EDIA, glycine (4 mng/ml), and 0.5 mM phenylmethylsulfonyl fluoride. We also tried several other methods to avoid Pronase...

L Manuelidis

1984-01-01T23:59:59.000Z

364

This is an author-deposited version published in: http://oatao.univ-toulouse.fr/ Eprints ID: 5685  

E-Print Network (OSTI)

electrodes. Then, hydrogen is produced in an electrolytic cell using a phos- phate solution as the catholyte, nuclear, sustainable, etc.). The synthetic fuel mainly considered is hydrogen, which could make up of hydrogen through water electrolysis is performed using aqueous KOH (30%w) at 80 C and applying a cell

Mailhes, Corinne

365

Effect of 1-Methyl-1-nitrosourea on Poly(Adenosine Diphosphate-Ribose) Polymerase Activity at the Nucleosomal Level  

Science Journals Connector (OSTI)

...6000 units/mg) and snake venom phos phodiesterase...from Drug Research and Development Program, National Cancer...that heating at high temperatures does not affect poly...was carried out using snake venom phosphodiestemase...After 15 mm at room temperature, the reaction was stopped...

Swaroop Sudhakar; Kenneth D. Tew; and Mark E. Smulson

1979-04-01T23:59:59.000Z

366

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

367

Syntheses and Evaluation of Carbon-11- and Fluorine-18-Radiolabeled pan-Tropomyosin Receptor Kinases (Trk) Inhibitors: Exploration of the 4-aza-2-Oxindole Scaffold as Trk PET Imaging Agents  

Science Journals Connector (OSTI)

In vitro autoradiographic studies in rat brain and TrkB-expressing human neuroblastoma cryosections confirmed that [11C]9 specifically binds to Trk receptors in vitro. ... MicroPET studies revealed that binding of [11C]9 in the rodent brain is mostly nonspecific despite initial high brain uptake (SUVmax = 2.0). ... Preliminary microPET evaluation in rat revealed a moderate initial brain uptake (SUVmax = 0.8) but superior SUVs after 20 min and up to >220% at 60 min compared to the lead [11C]9. ...

Vadim Bernard-Gauthier; Arturo Aliaga; Antonio Aliaga; Mehdi Boujemeline; Robert Hopewell; Alexey Kostikov; Pedro Rosa-Neto; Alexander Thiel; Ralf Schirrmacher

2014-10-28T23:59:59.000Z

368

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

369

Experimental: Gel Electrolyte The gel mixtures were designed to be cast as  

E-Print Network (OSTI)

PEDOT:PSS as counter electrode, which demonstrated good Iodine regenerative catalytic activity .[2] www.risoe.dk/solarcells

370

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.

371

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

372

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

373

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

374

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Electrochemical Fluorination in Molten Fluoride Salts Electrochemical Fluorination in Molten Fluoride Salts Savannah River Site Aiken/Aiken/South Carolina This EEC covers activities in C105/110 related to development of an electrochemical fluorination process to separate selected metals (non- RCRA) from depleted uranium. The goal of the process is to convert depleted uranium metal (U) to gaseous uranium hexafluoride (UF6) that can be easily separated from solution while other metallic constituents remain as metals or are converted to non-volatile fluoride salts. The electrochemical fluorination process will be conducted in molten fluoride eutectic salts at temperatures above 300°C. The electrochemical fluorination process will be carried out using the fluorinating agents such as NF3, XeF2, and F2. Additional inert gases or vacuum may be used in

375

U.S. Department of Energy Categorical Exclusion Determination Form  

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

Electrochemical Fluorination in Molten Fluoride Salts Electrochemical Fluorination in Molten Fluoride Salts Savannah River Site Aiken/Aiken/South Carolina This EEC covers activities in C105/110 related to development of an electrochemical fluorination process to separate selected metals (non- RCRA) from depleted uranium. The goal of the process is to convert depleted uranium metal (U) to gaseous uranium hexafluoride (UF6) that can be easily separated from solution while other metallic constituents remain as metals or are converted to non-volatile fluoride salts. The electrochemical fluorination process will be conducted in molten fluoride eutectic salts at temperatures above 300°C. The electrochemical fluorination process will be carried out using the fluorinating agents such as NF3, XeF2, and F2. Additional inert gases or vacuum may be used in

376

Formation of Iron Oxyfluoride Phase on the Surface of Nano-Fe3O4 Conversion Compound for Electrochemical Energy Storage  

Science Journals Connector (OSTI)

Formation of Iron Oxyfluoride Phase on the Surface of Nano-Fe3O4 Conversion Compound for Electrochemical Energy Storage ... (21) In this work we aim to follow an alternate route for converting iron oxides to oxyfluorides using a controlled fluorination process. ... The FBR method used in this study for conversion of iron oxide to oxyfluorides using low pressure fluorine gas mixed with an inert carrier gas (He) is a relatively simple and safe process used routinely for fluorination studies. ...

Hui Zhou; Jagjit Nanda; Surendra K. Martha; Jamie Adcock; Juan C. Idrobo; Loc Baggetto; Gabriel M. Veith; Sheng Dai; Sreekanth Pannala; Nancy J. Dudney

2013-10-21T23:59:59.000Z

377

Use of solvents and environmental friendly materials for applications in Green Chemistry.  

E-Print Network (OSTI)

??The present Thesis studies three alternative solvent groups as sustainable replacement of traditional organic solvents. Some aspects of fluorinated solvents, supercritical fluids and ionic liquids, (more)

Samor, Chiara and#60;1982and#62

2010-01-01T23:59:59.000Z

378

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

379

Electrical insulation  

Science Journals Connector (OSTI)

n....Material with very low conductivity, which surrounds active electrical devices. Common electrical insulation chemicals are fluorine-containing polymers.

2007-01-01T23:59:59.000Z

380

Electrical Insulation  

Science Journals Connector (OSTI)

n...Material with very low conductivity which surrounds active electrical devices. Common electrical insulation chemicals are fluorine-containing polymers (Dissado LA...

Jan W. Gooch

2011-01-01T23:59:59.000Z

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

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

NLE Websites -- All DOE Office Websites (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...

382

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

383

A&A 518, L109 (2010) DOI: 10.1051/0004-6361/201014570  

E-Print Network (OSTI)

, corresponding to 0.6% of the solar abundance of fluorine. This value is close to that inferred from previous ISO

Giesen, Thomas

384

E-Print Network 3.0 - aerobic bacterial consortium Sample Search...  

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

of fluorinated environmental pollutants under aerobic conditions Syed Adnan Hasan... aerobic conditions Proefschrift ter verkrijging van het doctoraat in de Wiskunde en...

385

Description of coordinatively unsaturated sites regeneration over MoS2-based HDS catalysts using 35  

E-Print Network (OSTI)

modified with third doping elements, e.g. fluorine [2,3], phosphorus [4-9] or boron [10-14]. In addition

Boyer, Edmond

386

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

NLE Websites -- All DOE Office Websites (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...

387

The crystal structure of pyridinium hexafluoroantimonate(V  

E-Print Network (OSTI)

The arrangement of the fluorine atoms also appears to be disordered. The contribution to the X-ray scattering may be satisfactorily calculated by assuming that the disorder is best represented by a spherically rotating group of six fluorine atoms in a regular... octahedral arrangement with an antimony- fluorine bond distance of 1. 94 A. The minimum distances between the fluorine atoms and the atoms of the pyridine ring skeleton fall into two sets, one at 2 ' 63 A and 6 the other at 2. 755 A. For each group of six...

Copeland, Richard Franklin

2012-06-07T23:59:59.000Z

388

Separation of americium and europium from solutions of nitric and perchloric acid using dipicolinic acid diamides  

Science Journals Connector (OSTI)

Extraction of nitric acid, perchloric acid, americium, and europium with dialkyldiarylamides of 2,6-pyridinecarboxylic (dipicolinic) acid in polar fluorinated solvents (diluents) was analysed. Among the extrac...

M.Yu. Alyapyshev; V. A. Babain; I. V. Smirnov

2006-01-01T23:59:59.000Z

389

Separation of americium and europium from solutions of nitric and perchloric acid using dipicolinic acid diamides  

Science Journals Connector (OSTI)

Extraction of nitric acid, perchloric acid, americium, and europium with dialkyldiarylamides of 2,6-pyridinecarboxylic (dipicolinic) acid in polar fluorinated solvents (diluents) was analysed. Among the extrac...

M. Yu. Alyapyshev; V. A. Babain; I. V. Smirnov

2006-12-01T23:59:59.000Z

390

Novel Electrolytes and Additives | Department of Energy  

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

High Voltage Electrolyte for Lithium Batteries Vehicle Technologies Office Merit Review 2014: Fluorinated Electrolyte for 5-V Li-Ion Chemistry Novel Electrolytes and Additives...

391

Iodized Salt  

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

Iodized Salt Iodized Salt Name: Theresa Location: N/A Country: N/A Date: N/A Question: Why do they put iodine in salt? Replies: Iodine was introduced into salt at earlier this century when it was discovered that certain areas of the US had a mark deficiency in iodine in the diet of people, and people developed a neck swelling (goiter). The Great Lakes region is one of these areas where the soil is lacking iodine. Goiter can be caused when the thyroid gland swells because of a lack of iodine in the diet. Most medical advise now states that iodine in salt is no longer necessary due to our food sources arising from all over the world. Steve Sample Hi Theresa...see, there are a variety of elements and compounds that are necessary for the proper maintenance of our life. One of these is iodine, since a small quantity of iodine is needed for the adequate functioning of the thyroid gland. A deficiency of iodine produces dire effects, as goiter, where the thyroid gland swollens due to the lack of iodine traces in the diet. The iodine affects directly the tyrhoid gland secretions, which themselves, to a great extent, control heart action, nerve response to stimuli, rate of body growth and metabolism.

392

Hydrothermally Grown Upright-Standing Nanoporous Nanosheets of Iodine-Doped ZnO (ZnO:I) Nanocrystallites for a High-Efficiency Dye-Sensitized Solar Cell  

Science Journals Connector (OSTI)

Nanoporous nanosheets of ZnO and ZnO:I nanocrsytallites were washed with DI water and baked in air at 350 C for 30 min in order to remove any residual organics and optimize solar cell performance. ... The proposed growth process is a simple and low-cost approach for the large scale production of nanomaterials with high conversion efficiency to fabricate DSSCs and hybrid solar cells. ... This method is also anticipated to be equally applicable to other semiconductor photoelectrodes in DSSCs and organicinorganic hybrid solar cells. ...

Khalid Mahmood; Hyun Wook Kang; Seung Bin Park; Hyung Jin Sung

2013-03-19T23:59:59.000Z

393

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.

394

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

395

Control of the activity and synthesis of aspartate transcarbamylase in Aerobacter aerogenes  

E-Print Network (OSTI)

, uridine; CMP, cytidine-5'-monophosphate; CTP, cytidine-5'- triphosphate; UMP, uridine-5'-monophosphate; udp, uridine-phos- phorylase. INTRODUCTION In an endeavor to ascribe possible taxonomic and evolutionary relationships between organisms... the concentration -3 of carbamyl phosphate from an original concentration of 5 x 10 N -4 to a lower concentration of 5 x 10 M greater inhibition was observed by CMP and UMP. The triphosphates were then examined and -3 it was found that CTP (5 x 10 M) inhibited...

Deutsch, Walter Andrew

2012-06-07T23:59:59.000Z

396

Nitrification Capacities of Texas Soil Types and Factors which Affect Nitrification.  

E-Print Network (OSTI)

, the test was repeated n-ith the use of normal nitric acid. Basicity is expressed in terms of percentage of calcium carbonate. The acid was neutralized chiefly by calcium derived from calcium carbonate, if present, from calcium in the base exchange... to neutralize the nitric and sulphuric acids pro- duced, or of both. .4 few soils needed additions of available phos- phates for high nitrification (35) and there was a small percentage left which still did not nitrify the ammonium sulphate completely...

Sterges, A. J.; Fraps, G S. (George Stronach)

1947-01-01T23:59:59.000Z

397

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

398

The Active Potash of the Soil and Its Relation to Pot Experiments.  

E-Print Network (OSTI)

agreed with field tests on clay soils but not other types of soils (12). Moore (4) compares the quantity of potash and phos extracted from the soil by dilute acids, with the quanti by crops from the soil, regardless of the deficiencies of t any... ------------, Lufkin sand, subsoil Houston black clay -------------- Houston black clay --------------- Houston black clay --------------- Houston black clay ,-------------- Houston black clay --------------- July 20-September 8 --------------- July 20-September...

Fraps, G. S. (George Stronach)

1912-01-01T23:59:59.000Z

399

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

400

Biotransformation of Flurbiprofen by Cunninghamella Species  

Science Journals Connector (OSTI)

...spectrometry and fluorine-19 nuclear magnetic resonance spectroscopy...can be applied to the generation of useful quantities...of the metabolites by nuclear magnetic resonance...hollow fiber cartridge reactors: case study of diclofenac...spectrometry and fluorine-19 nuclear magnetic resonance spectroscopy...

Jessica Amadio; Katherine Gordon; Cormac D. Murphy

2010-07-23T23:59:59.000Z

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

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

E-Print Network (OSTI)

in lithium batteries [2, 3] and as solid lubricants [4­6]. The fluorination of graphite is also possible HF [9]. The obtained fluorinated materials, in which the planarity of the graphene layers for primary lithium batteries [16]. We showed in a previous work that the compounds obtained in the case of F2

Paris-Sud XI, Université de

402

DOI: 10.1002/ejoc.201100382 Rapid and Efficient Radiosyntheses of meta-Substituted [18  

E-Print Network (OSTI)

/ Microreactors / Iodonium salts Effective methods for the introduction of the short-lived posi- tron a hydrogen atom or hydroxy group in an organic molecule, (ii) the half-life of fluorine- 18 is well suited(p,n)18 F re- action on 18 O-enriched water.[11,12] The ease of production of high amounts of fluorine-18

Shen, Jun

403

Investigation of Anion-pi Interactions in Inorganic, Organic and Biological Systems  

E-Print Network (OSTI)

omitted for the sake of clarity. Copper atoms (teal), carbon atoms (gray), nitrogen atoms (blue), phosphorus atoms (pink), fluorine atoms (yellow). ................................................................. 46 2.10 Mass spectrum showing [Cu... the olefin and the anion. ............................................................... 73 3.4 Sum of the energies predicted by NBO for the charge transfer interactions between the fluorine lone pairs and the antibonding orbitals of the olefins...

Funck, Edward Sterling

2012-07-16T23:59:59.000Z

404

Cationic Main Group Compounds as Water Compatible Small Anion Receptors  

E-Print Network (OSTI)

.................................................. 31 27. Top: Fluoride capture and release protocol using [34]+. Bottom: Examples of fluorination reactions ................................................................ 33 28. Synthesis of 37, 38, and [39...-withdrawing substituents in triarylboranes constitutes a well-established method for enhancing their Lewis acidity.11 Noteworthy applications for these fluorinated boranes include the activation of transition metal and main group species via anionic ligand abstraction...

Leamer, Lauren Anne

2013-05-06T23:59:59.000Z

405

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

406

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

407

WHO Guidelines on Hand Hygiene in Health Care  

E-Print Network (OSTI)

.6 Hexachlorophene 11.7 Iodine and iodophors 11.8 Quaternary ammonium compounds 11.9 Triclosan 11.10 Other agents 11

Kim, Duck O.

408

E-Print Network 3.0 - age-dependent radium retention Sample Search...  

NLE Websites -- All DOE Office Websites (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...

409

HELSINKI UNIVERSITY OF TECHNOLOGY ENE-47.153 Halogens, dioxins/Halogens, dioxins/furansfurans  

E-Print Network (OSTI)

OrimulsionTM ~700 Petroleum coke, "petcoke" ~ 300 Natural gas - * Iodine 0.5 - 1.5 mg/kg #12;HELSINKI

Zevenhoven, Ron

410

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

411

EMSL - solids  

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

solids en Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. http:www.emsl.pnl.govemslwebpublicationsiodine-solubility-low-activity-waste-borosilicate-...

412

EMSL - liquids  

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

liquids en Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. http:www.emsl.pnl.govemslwebpublicationsiodine-solubility-low-activity-waste-borosilicate...

413

PART THREE REMEDIAL AND CORRECTIVE ACTIONS ARTICLE XIII. FINDINGS...  

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

substances, including chromium, strontium-90, tritium, iodine-129, uranium, cyanide, carbon tetrachloride, nitrates, and technetium-99 have been detected in the groundwater...

414

Slide 1  

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

(Reduction of Tc-99 is potentially reversible) Iodine-129 Nitrate Hexavalent Chromium Carbon Tetrachloride HNF-49889-VA Technology - In Situ Vitrification General Description *...

415

The effects of 20-hydroxyecdysone on cell surface proteins and cell interactions in Drosophila melanogaster cell lines  

E-Print Network (OSTI)

]-N-Acetylglucosamine 3 Immunoprecipitation with Disc Membrane Antiserum Lectin Affinity Chromatography 12 12 24 27 32 IV DISCUSSION AND CONCLUSIONS 40 REFERENCES 49 VITA 54 V1 LIST OF FIGURES FIGURE Page 1 7. 5% SDS- PAGE of NP-40 extracts of iodinated S3... cells. . . 14 2 7. 5%, SDS-PAGE of NP-40 extracts of iodinated L3 cells. 16 3 Two-dimensional gels of NP-40 extracts of iodinated S3 cells. 19 4 Two-dimensional gels of NP-40 extracts of iodinated L3 cells. 21 5 Two-dimensional gel of the acidic...

Stachowiak, Janice Ann

2012-06-07T23:59:59.000Z

416

Analytical Data Report of Water Samples Collected For I-129 Analysis  

SciTech Connect

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

417

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

SciTech Connect

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

418

Localized chemical switching of the charge state of nitrogen-vacancy luminescence centers in diamond  

E-Print Network (OSTI)

We present a beam-directed chemical technique for controlling the charge states of near-surface luminescence centers in semiconductors. Specifically, we fluorinate the surface of H-terminated diamond by electron beam irradiation in the presence of NF3 vapor. The fluorination treatment acts as a local chemical switch that alters the charge state of nitrogen-vacancy luminescence centers from the neutral to the negative state. The electron beam fluorination process is highly localized and can be used to control the emission spectrum of individual nanodiamonds and surface regions scanned by the electron beam

Shanley, Toby W; Aharonovich, Igor; Toth, Milos

2014-01-01T23:59:59.000Z

419

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

420

Nature and Use of Commercial Fertilizers.  

E-Print Network (OSTI)

on the Texas market. Formula 1.8-2-2 Fertilizer. This fertilizer contains 8 per cent available phosphoric acicl, 2 per cent potash and 1.65 per cent nitrogen. It may be prepared by mixing the following ingredients : ............. Acid phosphate, 14 per... phosphoric acid is rorth $1.00 per 100 pounds, the 14 per cent acid phosphate is worth $1.17 per 100 pounds, or very nearly 20 per cent more. Thus the consumer who purchases 14 per cent of acid phos- phate, when both I2 and 14 per cent are selling a...

Fraps, G. S. (George Stronach)

1908-01-01T23:59:59.000Z

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.


421

Effects of municipal effluent on algal growth  

E-Print Network (OSTI)

'luent with phos- phorus removed by lime and 3. Secondary eff'luent with phosphorus and nitrogen removed by high lime addition and air stripping. Laboratory experiments demonstrated that the dilution of' the econdary ef'f'luent to 1~0 by volume or tertiary ef... OF TABLES Table ~Pa DILUTIONS OF THE SAMPLES WITH TAP WATER RELATIONSHIP BETWFEN TOTAL PHOSPHORUS CONCENTRATION AND pH TO LI1&iE CONCENTRATION TOTAL KJELDAHL NITROGEN OF THE SECONDARY EFFLUENT AFTER MIXING WITH 750 ppm CaO, FOLLOWED BY 2-HOUR...

Sung, Yeh-Min

2012-06-07T23:59:59.000Z

422

The Soils of Eastland, El Paso, Lubbock and San Saba Counties.  

E-Print Network (OSTI)

foods in the soil. example, with the Caddo fine sandy loam of Camp county, the corn possibility for active phosphoric acid is 18, for the active potash 80, and for total nitrogen 23. The soil is probably deficient first in phos- phoric acid..., and vegetables are also produced as well as live stock. Table 4 contains the acreage and percentage of some of the types of soils which occur in Eastland county. Sixteen types were mapped and grouped into seven series. The Windthorst fine sandy loam occupies...

Fraps, G. S. (George Stronach)

1926-01-01T23:59:59.000Z

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

"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.

425

O R E G O N of the Hanford Thyroid Disease Study  

E-Print Network (OSTI)

to provide the necessary data for evaluation of thyroid disease and estimation of radiation dose. Data of Hanford's iodine-131, researchers studied a group of people with a wide range of radiation doses or consumed in contaminated food. Iodine-131 was the primary source of radiation for many people exposed

426

Missile Defense Rides Again  

Science Journals Connector (OSTI)

...oxygen-iodine laser mounted in the nose of a Boeing 747. Although such systems were heavily...and program manager for the NMD team at Boeing Co. which last April won a $1.6 billion...oxygen-iodine laser mounted in the nose of a Boeing 747. Although such systems were heavily...

James Glanz

1999-04-16T23:59:59.000Z

427

JOURNALDE PHYSIQUE IV ColloqueC7,supplt5ment au Journalde Physique111,Vol, 1,dkembre 1991  

E-Print Network (OSTI)

], and it is utilized for studies of laser nuclear fusion, X-lay lasers, and other plasma physics[2][3] such as glass-ku, Yokohama223,Japan ABSTRACT : A pulsed iodine laser driven by a chemical oxygen generator was developed is same as the conventional Chemically pumped Oxygen-Iodine Lasers (COIL), it is unique in that the pulsed

Boyer, Edmond

428

acs_JP_jp-2011-003529 1..6  

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

and (b) Atomistic solvation models of Li-ion in EC and PC, respectively. Red is oxygen, green is fluorine, blue is carbon, gray is phosphorus, and yellow is lithium. The plots at...

429

Ionic Liquids as Green Solvents for Alkylation and Acylation  

Science Journals Connector (OSTI)

Many clean solvents like water, ionic liquids, supercritical fluid, polyglycol, fluorine-containing solvents, and so on are employed to replace the conventional organic solvents. Among these, ionic liquids have a...

Zhongkui Zhao; Yitao Dai

2012-01-01T23:59:59.000Z

430

Fludarabine  

Science Journals Connector (OSTI)

Fludarabine is a fluorinated purine nucleoside analog of vidarabine, an antiviral agent. Fludarabine is resistant to adenosine deaminase and has antimetabolic properties. It is used for the treatment of chronic lymphocytic leukemia and low-grade lymphomas.

Barbara J. Rider

2007-01-01T23:59:59.000Z

431

Synthesis of new high performance lubricants and solid lubricants. Progress report, April 1992--March 1993  

SciTech Connect

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

432

Synthesis of new high performance lubricants and solid lubricants  

SciTech Connect

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

433

Water penetration into surfactant micelles  

Science Journals Connector (OSTI)

Water penetration into surfactant micelles ... The cross-relaxation rates for fluorines in the different moieties along the surfactant vary ... ... An oxidant, periodate, was added to the system, and the subsequent rate of thioether oxidation to ... ...

Haakan. Wennerstroem; Bjoern. Lindman

1979-01-01T23:59:59.000Z

434

Graphene-based Material Systems for Nanoelectronics and Energy Storage Devices  

E-Print Network (OSTI)

different carbon blacks in CF4 radiofrequency plasma" Carbonfluorine doped graphene with CF4 plasma treatment for 10s.fluorine doped graphene with CF4 plasma treatment for 10s.

Guo, Shirui

2012-01-01T23:59:59.000Z

435

Etching Efficiency for Si and SiO2 by CF+x, F+, and C+ Ion Beams Extracted from CF4 Plasmas  

Science Journals Connector (OSTI)

Fluorocarbon (CF+ x), fluorine (F+), and carbon (C+) ion beams with highcurrent density (50

T. Yamaguchi; K. Sasaki; K. Kadota

2000-03-01T23:59:59.000Z

436

Organofluorine Chemistry: Nomenclature and Historical Landmarks  

Science Journals Connector (OSTI)

Fluorinethe superhdlogenis by no means a rare element: found only in the form of its mononuclidic % MathType!MTEF!2!1!+- % feaagCart1ev2aaa...

R. E. Banks; J. C. Tatlow

1994-01-01T23:59:59.000Z

437

C3TA10700K 9327..9331  

NLE Websites -- All DOE Office Websites (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...

438

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

439

GIS in Human Health Studies  

Science Journals Connector (OSTI)

Elucidating the causes of fluorosis in the Peoples Republic of China offers another example of how GIS can be used to address the relationship ... to fumes from residential combustion of high-fluorine coal or br...

Joseph E. Bunnell; Alexander W. Karlsen

2013-01-01T23:59:59.000Z

440

DEPARTMENTS:  

Science Journals Connector (OSTI)

......Acetylene Ethyl Chloride Ethyl Fluoride Ethylene Ethylene Oxide Fluorine Halocarbon- 11...chromato - graphy. No guess: the price is low.Alurninum OxideW 200 acid...neutra) For informati Al on and price liet Write to: upharm Chemicals0......

New Literature Available

1969-11-01T23:59:59.000Z

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.


441

DEPARTMENTS:  

Science Journals Connector (OSTI)

......Ethane Ethyl Acetylene Ethyl Chloride Ethyl Fluoride Ethylene Ethylene Oxide Fluorine Halocarbon- 11, 12, 13, 13B1, 14...compounds, the molecular weight, the catalog number and price. Listed for most items are the struc- tural formula......

New Products

1969-09-01T23:59:59.000Z

442

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

443

EMEF DMC  

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

L. Cascade Air System M. Cascade Nitrogen System N. Purge and Evacuation Stations 0. Wet Air Pump Stations P. Seal Feed and Exhaust Systems Q. Fluorine Generation System Operating...

444

Physics Division ESH Bulletin 03-2 COMPRESSED GASES SECURITY ALERT  

E-Print Network (OSTI)

concerns for all personnel handling, storing, or using these chemicals. Arsine Ammonia Boron trichloride Ethylamine Chemicals of Concern Ethylene oxide Fluorine Germane Germanium tetrafluoride Hydrogen bromide Phosphorus trifluoride Sulfur dioxide Sulfur tetrafluoride Tungsten hexafluoride Contact your sales

445

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

446

Synthesis, Characterization and Anion Binding Properties of Boron-based Lewis Acids  

E-Print Network (OSTI)

fluorination chemistry. Interestingly, the telluronium systems show a greater fluoride anion affinity than their sulfonium analogs. This increase is assigned to the greater spatial and energetic accessibility of the sigma* orbital on the tellurium atom which...

Zhao, Hai Yan

2012-07-16T23:59:59.000Z

447

Electronic structure and reactivity of organofluorine compounds. 5. Electronic structure of CF3-substituted fluoroethylenes from MNDO and STO-3G calculations  

Science Journals Connector (OSTI)

It was established by MNDO and STO-3G quantum-chemical calculations of higher perfluorinated olefins that substitution of the fluorine atoms in C2F4 by CF3 groups leads to stabilization of the ?-MO and destabiliz...

I. N. Rozhkov; Yu. A. Borisov

1992-06-01T23:59:59.000Z

448

High Voltage Electrolytes for Li-ion Batteries | Department of...  

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

in Support of 5 V Li-ion Chemistries Vehicle Technologies Office Merit Review 2014: Fluorinated Electrolyte for 5-V Li-Ion Chemistry High Voltage Electrolyte for Lithium Batteries...

449

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

450

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

451

Application of modeling of the texture dependence of environmentally assisted crack growth of long and short cracks to ZIRCALOY fuel tubing  

SciTech Connect

Argon and iodine stress-rupture tests were performed on five lots of ZIRCALOY-4 tubing with relatively large differences in texture. The addition of iodine relative to argon decreases the failure time. The iodine data exhibited increasing failure times with decreasing stress until a plateau or threshold stress level was reached. The threshold stress was used to evaluate a model developed from fracture mechanics crack propagation data. Modification of this model was necessary in order to account for tubing texture, tubing fracture surface characteristics, test temperature, and the embrittling effect of iodine. The adjusted model predicts that moderate increases in the iodine threshold stress may be obtained with very low tangential texture tubing.

Foster, J.P.; Comstock, R.J. (Westinghouse Electric Corp., Pittsburgh, PA (USA). Research and Development Center)

1989-10-01T23:59:59.000Z

452

A Novel Fluorous Biphasic System: Werner-type Complexes in Fluorous Media  

E-Print Network (OSTI)

........................................................................................... 5 Figure 1.3. B?hlmann?s fluorous phosphonium salt ................................................. 6 Figure 1.4. Perfluorinated crown ethers: directly fluorinated (top), fluorous tagged (middle), Pozzi?s phase transfer catalyst... expanded the definition to mean "of or relating to, or having the characteristics of highly fluorinated saturated organic materials, molecules, or molecular fragments."2 These materials possess properties different from aqueous and organic materials...

Sullivan, Ann R.

2012-02-14T23:59:59.000Z

453

New Designs of Rigid Pincer Complexes with PXP Ligands and Late Transition Metals and sp3 C-F Bond Activation with Silylium and Alumenium Species  

E-Print Network (OSTI)

Fluoroorganic compounds play an integral role in everyday life due to their special chemical, biological and mechanical properties. 41 As present, about 30% of agrochemicals and 20% of pharmaceuticals contain fluorine, including drugs such as Lipitor... fundamental challenge to chemists, especially with regard to accomplishing it in a catalytic fashion and under mild conditions.47 The reasons for the challenge of C-F bond activation are the following.48 1) Fluorine is the most electronegative element...

Gu, Weixing

2012-02-14T23:59:59.000Z

454

Experimental and Theoretical Investigations of Anion-pi Interactions Metallacyclic Architectures of First-Row Transition Metals and N-Heteroaromatic Ligands  

E-Print Network (OSTI)

2N4F2???[PF6]- complex. (c) Side-view and (d) top-view of a ball and stick representation of the C2N4(CN)2???[PF6]- complex. Atom colors: carbon (grey), nitrogen (blue), fluorine (light blue), and phosphorus (orange... Page complex. Atom colors: carbon (grey), nitrogen (blue), fluorine (light blue), and phosphorus (orange). ................................................................... 67? Figure 27. (a) The anion-arene-anion interaction in [Ni4(bptz)4(NCCH3...

Giles, Ian

2012-07-16T23:59:59.000Z

455

Detection of bone disease in dogs by radioisotope scanning  

E-Print Network (OSTI)

, delayed union, and nonunion), osteomyelitis, degenerative arthritis, surgical osteotomy, i'ibrous dysplasia, osteochondromatosie, and growing epiphyses. Radioisotopic scanning has been reported 12 for studying the metabolism of Fluorine-18 in dogs 9..., ( 1962): 95-104. 2. Bauer, G. C. H. , and Smith, E. M. r Sr 85 Sointimetry in Osteoarthritis of the Knee. J . Nucl. Med. , 10, (Mar. , 1969): 109-116. Blau, M. , Nagler, W. , and Bender, M. A. : Fluorine ? 18. A New Isotope for Bone Scanning. J. Nucl...

Morris, Earl Louis

2012-06-07T23:59:59.000Z

456

New fluorocarbon elastomers for seals for geothermal and other aggressive environments. Final report  

SciTech Connect

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

457

elementwordsearch_2001  

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

C C I D L A B I R A G I K P O T A S S I U M B C N I Z I C N S R X Z R C L N I U M D A E L P I T I A O O H O O X Y O U I M O D A R B F Z T I R A D R E L D M P U N R X C P Y A A I C I B C K G O L D E I T G R Y Y H L I D B V I O D O X O B I M P A O N E A G L U V I Y E N A Z N I L Y U K E L N M L N I O T A U L X Y C I I O M O M E R C U R Y U R R O N M O Y N K M U N I T A L P V I R M N O I N O I N H O L C M G K A R F P I S M U I O N I V L I Y M N I T R O G E N L T O U T I X E U A O R D I I I T K O S H M U I D A L L A P N O D A R T I B I H L Y T A T U I V A F R R S D F S O N C A L C I U M G O R U O R R U R H E L U G A L U M I N U M N N A M R G A R R E L U R E W A R G D O E M E I N L L O N A N R E O O N I O D E R N R S D U I R B N K L I I N R H Z R A G S I R E E R M U C N W E N A D N I P A P E K D P U V N O M M N E T S G N U T N S H N V O I S I L V E R E I N N E L Y R I E O A N I C K E L I M U I N A T I T O T X S F H X S I L I C O N S W O D A H S R E P P O C P Y ALUMINUM GOLD NICKEL SILICON ANTIMONY HELIUM NITROGEN SILVER ARGON HYDROGEN OXYGEN SODIUM BERYLLIUM IODINE PALLADIUM SULFUR BORON IRON PHOSPHORUS TIN CALCIUM KRYPTON PLATINUM TITANIUM CARBON LEAD PLUTONIUM TUNGSTEN CHLORINE LITHIUM POTASSIUM URANIUM COPPER MERCURY RADIUM ZINC FLUORINE NEON RADON ZIRCONIUM

458

Model for the transport of airborne radioiodine  

SciTech Connect

Gaseous iodine deposits on surfaces exposed to the vapors. The industry has observed gaseous iodine transport behavior for years, and groups have proposed models describing the phenomena with limited success. The transport models attempt to describe the complicated chemical processes in terms of empirical rate constants. The current model, also empirical, treats deposition, conversion, and resuspension along a path of short segments where the assumption of instantaneous and homogeneous mixing is adequate, passing on the results as input to the next segment. The number of segments depends on line and flow parameters and can be as many as 100,000 for a long, large-diameter pipe with low flow. It includes a chemical bonding reaction rate to iodine deposited on the surface. The model has five compartments in each segment: concentrations of the three airborne iodine species, surface activity available for resuspension, and reacted surface iodine that is fixed on the surface. All iodine in the segment undergoes radioactive decay. The calculation divides the time period into small time division, typically 100, where the assumption of instantaneous equilibrium is applicable. The model initially developed by Science Applications International describes deposition, resuspension, and conversion of iodine in four differential equations that describe, respectively, airborne elemental, HOI and organic, and surface activities.

Cline, J.E.

1991-11-01T23:59:59.000Z

459

The chemistry of halogens on diamond: effects on growth and electron emission  

SciTech Connect

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

460

Xenon(IV)Carbon Bond of [C6F5XeF2]+; Structural Characterization and Bonding of [C6F5XeF2][BF4], [C6F5XeF2][BF4]2HF, and [C6F5XeF2][BF4]nNCCH 3 (n = 1, 2); and the Fluorinating Properties of [C6F5XeF2][BF4  

Science Journals Connector (OSTI)

We thank the Natural Sciences and Engineering Research Council of Canada for support in the form of a Discovery Grant (G.J.S.), the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie for support in the form of research grants (H.-J.F.), the Ontario Ministry of Training, Colleges, and Universities for graduate scholarships (J.H.), and SHARCNet (Shared Hierarchical Academic Research Computing Network; www.sharcnet.ca ... Levy, H. A.; Burns, J. H.; Agron, P. A. Science 1963, 139, 1208 1209 ...

Karsten Koppe; Jamie Haner; Hlne P. A. Mercier; Hermann-J. Frohn; Gary J. Schrobilgen

2014-10-20T23:59:59.000Z

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

U.S. Transparency monitoring under the U.S./Russian HEU purchase agreement  

SciTech Connect

The conversion of Highly Enriched Uranium (HEU) metal to low enriched uranium (LEU) takes place at four Russian sites. HEU metal to oxide processing began in 1994 with shipments of HEU oxide from the Siberian Chemical Enterprise (SChE) to the Ural Electrochemical Integrated Plant (UEIP) fluorination and blending facility. U.S. transparency monitoring at these facilities began in February 1996. In 1996, fluorination and blending operations began at the Electrochemical Plant (ECP). In 1997, additional HEU metal to oxide was added at the Mayak Production Association (MPA), and additional fluorination and blending operations have been performed at SChE. U.S. transparency monitoring at these facilities is intended to provide confidence that HEU weapons components are received, that the HEU metal is converted to HEU oxide, and that the HEU is blended to LEU prior to shipment to the U.S. Enrichment Corporation (USEC). The monitoring begins with observation of HEU weapon components in sealed containers, including confirmation of the {sup 235}U enrichment using U.S. nondestructive assay (NDA) equipment. The feeding of HEU metal shavings to the oxidation process and the subsequent packaging of the HEU oxide for shipment to the fluorination and blending facilities are then monitored. At those facilities, monitors are allowed to witness the fluorination and blending of the HEU into LEU. Monitors are allowed to use the NDA instrumentation to confirm that HEU is being processed. A series of process and material accountancy documents are provided to U.S. monitors.

Benton, J; Dougherth, D R; Glaser, J W; Thomas, D C

1999-07-27T23:59:59.000Z

462

Current status of fluoride volatility method development  

SciTech Connect

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

463

Influence of surface passivation on the minority carrier lifetime, Fe-B pair density and recombination center concentration  

Science Journals Connector (OSTI)

Three kinds of methods (0.08 mol/L iodine in ethanol, SiN x :H, and 40% HF) are used to passivate solar-grade Czochralski (Cz) silicon wafers. Thereafter, minority carrier lifeti...

Feng Li; ZhongQuan Ma; XiaJie Meng; Peng L; ZhengShan Yu

2010-06-01T23:59:59.000Z

464

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

465

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

466

Radiation Protection at Light Water Reactors  

Science Journals Connector (OSTI)

......refers primarily to US regulatory guidelines (e.g...worker monitoring. Regulatory limits such as contamination...appropriate references to regulatory guidelines for these...monitoring sections review particulate, radio-iodine...permits, ALARA work plans and scaffold management......

Ken Veinot

2013-11-01T23:59:59.000Z

467

!""#$%&'()*+,-#.',&"*/'-0*12!*,"*-0#*34'5#* 6,(,5'*7&#'$,(**  

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

468

DOCTORATES CONFERRED BY AMERICAN UNIVERSITIES  

Science Journals Connector (OSTI)

...Siceloff: " Simple Groups from Order 2001 to order 3640." Benjamin Roy Simpson: "Correlation of Mental Abilities. " Bertram...Photo-electric Properties of Vapors of Alkali Metals. ' Stuart Jeffery Bates: "The Iodine Coulometer and the Value of the Faraday...

1912-08-02T23:59:59.000Z

469

SciTech Connect: Deep Bed Adsorption Testing using Silver-Functionaliz...  

Office of Scientific and Technical Information (OSTI)

transfer zone may be as short as 0.5 inches under the sorption conditions of the first test. Only a small fraction of the iodine sorbed on Bed 1 was desorbed during the purge...

470

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

471

Rapid determination of trace concentrations of lead in gasoline by anodic stripping voltammetry  

Science Journals Connector (OSTI)

Anodic stripping voltammetry can be used for the determination of ?g/l concentrations of lead in gasoline. A gasoline sample is extracted with iodine monochloride reagent solution. An aliquot of the aqueous ph...

Pentti Laukkanen

472

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

473

Comparison of enrichment techniques for the isolation of Salmonella sp. from swine feces  

E-Print Network (OSTI)

seven comparative techniques for isolation. A standard protocol, consisting of xylose lysine tergitol-4 agar (XLT4) paired with a primary enrichment in tetrathionate broth with iodine (TTH) and secondary enrichment in Rappaport-Vassiliadis R10 broth (RV...

Andrews, Kimberley Denise

2012-06-07T23:59:59.000Z

474

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

475

Potential application of Zircaloy chemical embrittlement to volume reduction of spent-fuel cladding  

SciTech Connect

Embrittlement of Zircaloy fuel cladding tubes by corrosion media was studied from the viewpoint of its applicability to spent-fuel reprocessing. The results from irradiated as well as unirradiated tubes are summarized as follows: (1) when iodine was employed as the solute, the use of methanol as the solvent caused significant embrittlement of the Zircaloy; (2) for the iodine-methanol solution, the embrittlement increased with the iodine content but saturated at 1 wt%; (3) a water content of up to 10 vol% in the iodine-methanol solution did not decrease the extent of embrittlement; (4) fracture was of the grain-boundary type, and a fuel cladding tube irradiated to [approximately] 35GWd/t showed the same embrittlement behavior as an unirradiated one.

Nakatsuka, Masafumi (Nippon Nuclear Fuel Development Co., Ltd., Ibaraki (Japan))

1993-09-01T23:59:59.000Z

476

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

477

RESULTS OF FIRST EXPERIMENTS ON NEUTRON GENERATION IN THE VITA NEUTRON SOURCE  

E-Print Network (OSTI)

as activation detector due to capture of epithermal neutrons by iodine also. Bubble detectors were used shell and reliably protected from magnetic fields and electromagnetic noises. Stability of the power

Taskaev, Sergey Yur'evich

478

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

479

environmental | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this study was to determine the solubility of...

480

liquids | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this study was to determine the solubility of...

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

solids | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this study was to determine the solubility of...

482

cation migration | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this study was to determine the solubility of...

483

Imaging | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this study was to determine the solubility of...

484

quadrupolar nuclei | EMSL  

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

leads are available at this time. Iodine Solubility in Low-Activity Waste Borosilicate Glass at 1000 C. Abstract: The purpose of this study was to determine the solubility of...

485

Laser development for laser fusion applications. Research progress report, October 1978-September 1979  

SciTech Connect

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

486

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

487

CX-007967: Categorical Exclusion Determination | Department of Energy  

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

67: Categorical Exclusion Determination 67: Categorical Exclusion Determination CX-007967: Categorical Exclusion Determination "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 This EEC covers activities related to development of an electrochemical fluorination process to separate selected metals (non-RCRA) from depleted uranium. The goal of the process is to convert depleted uranium metal (U) to gaseous uranium hexafluoride (UF6) that can be easily separated from solution while other metallic constituents remain as metals or are converted to non-volatile fluoride salts. The electrochemical fluorination process will be conducted in molten fluoride eutectic salts at temperatures

488

It's Elemental - The Element Neon  

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

Fluorine Fluorine Previous Element (Fluorine) The Periodic Table of Elements Next Element (Sodium) Sodium The Element Neon [Click for Isotope Data] 10 Ne Neon 20.1797 Atomic Number: 10 Atomic Weight: 20.1797 Melting Point: 24.56 K (-248.59°C or -415.46°F) Boiling Point: 27.07 K (-246.08°C or -410.94°F) Density: 0.0008999 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 2 Group Number: 18 Group Name: Noble Gas What's in a name? From the Greek word for new, neos. Say what? Neon is pronounced as NEE-on. History and Uses: Neon was discovered by Sir William Ramsay, a Scottish chemist, and Morris M. Travers, an English chemist, shortly after their discovery of the element krypton in 1898. Like krypton, neon was discovered through the

489

It's Elemental - Isotopes of the Element Neon  

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

Fluorine Fluorine Previous Element (Fluorine) The Periodic Table of Elements Next Element (Sodium) Sodium Isotopes of the Element Neon [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 20 90.48% STABLE 21 0.27% STABLE 22 9.25% STABLE Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 16 9×10-21 seconds Double Proton Emission 100.00% 17 109.2 milliseconds Electron Capture with delayed Alpha Decay No Data Available Electron Capture 100.00% Electron Capture with delayed Proton Emission 100.00% 18 1.6670 seconds Electron Capture 100.00% 19 17.22 seconds Electron Capture 100.00% 20 STABLE - -

490

Novel silane and disilane precursors to amorphous semiconductors: Final subcontract report, May 1988  

SciTech Connect

This Final Report describes the preparation and characterization of amorphous fluorohydrogenated silicon thin films. The novel approach in this study lies in the use of fluorinated silanes as film precursors. The advantages of this method are well defined initial ratios of hydrogen and fluorine to silicon and greatly reduced hazards in the handling of the gas. Fluorine derivatives of both silane and disilane were synthesized. Both glow discharge (or plasma-enhanced CVD) and thermal (CVD) methods were employed to prepare amorphous silicon on glass and silicon wafers. The electrical characterization of the material prepared from difluorosilane showed that the a-Si:H:F films obtained are of solar-grade semiconductor quality and can be doped to p- and n-type materials with diborane and phosphine. 29 refs., 24 figs., 10 tabs.

Pernisz, U.C.; Sharp, K.G.

1988-09-01T23:59:59.000Z

491

Novel silane and disilane precursors to amorphous semiconductors. Annual report, 1 April 1985-31 March 1986  

SciTech Connect

This report describes the preparation and characterization of amorphous fluorohydrogenated silicon thin films. The novel approach lies in the use of fluorinated silanes as film precursors. This method has the advantages of well-defined initial ratios of hydrogen and fluorine and a greatly reduced hazards in the handling of the gas. Fluorine derivatives of both silane and disilane were synthesized. A conventional method, glow discharge (or plasma-enhanced chemical vapor deposition), was employed to prepare amorphous silicon on glass and Si wafers. The electrical characterization of the material prepared from difluorosilane (the main precursor during the contract period covered in this report) showed that the a-Si:H:F films obtained are of solar-grade semiconductor quality and can be doped to p- and n-type material with diborane and phosphine.

Pernisz, U.; Sharp, K.

1986-08-01T23:59:59.000Z

492

Ab initio calculations of various protonation sites in perfluorodiethyl ether: Models for high temperature lubricant decomposition?  

SciTech Connect

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

493

Thermal Reactions of Uranium Metal, UO2, U3O8, UF4, and UO2F2 with NF3 to Produce UF6  

SciTech Connect

he objective of this paper is to demonstrate that NF3 fluorinates uranium metal, UO2, UF4, UO3, U3O8, and UO2F22H2O 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

494

Donor bound excitons in ZnSe nanoresonators - Applications in quantum information science  

SciTech Connect

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

495

Optimization of transparent and reflecting electrodes for amorphous silicon solar cells. Final technical report  

SciTech Connect

Transparent conducting fluorine doped zinc oxide was deposited as thin films on soda lime glass substrates by atmospheric pressure chemical vapor deposition (CVD) at substrate temperatures of 460 to 500 degrees C. The precursors diethylzinc, tetramethylethylenediamine and benzoyl fluoride were dissolved in xylene. This solution was nebulized ultrasonically and then flash vaporized by a carrier gas of nitrogen preheated to 150 degrees C. Ethanol was vaporized separately, and these vapors were then mixed to form a homogeneous vapor mixture. Good reproducibility was achieved using this new CVD method. Uniform thicknesses were obtained by moving the heated glass substrates through the deposition zone. The best electrically and optical properties were obtained when the precursor solution was aged for more than a week before use. The films were polycrystalline and highly oriented with the c-axis perpendicular to the substrate. More than 90% of the incorporated fluorine atoms were electrically active as n-type dopants. The electrical resistivity of the films was as low as 5 x 10/sup -4/ Omega cm. The mobility was about 45 cm /Vs. The electron concentration was up to 3 x 10 %sup20;/cm. The optical absorption of the films was about 3-4% at a sheet resistance of 7 ohms/square. The diffuse transmittance was about 10% at a wavelength of 650 nm. Amorphous ilicon solar cells were deposited using the textured fluorine doped zinc oxide films as a front electrode. The short circuit current was increased over similar cells made with fluorine doped tin oxide, but the open circuit voltages and fill factors were reduced. The voltage was restored by overcoating the fluorine-doped zinc oxide with a thin layer of fluorine-doped tin oxide.

Gordon, R.G.; Kramer, K.; Liang, H.; Liu, X.; Pang, D.; Teff, D.

1998-09-01T23:59:59.000Z

496

Improved surface adhesion and coverage of perfluoropolyether lubricants following far-UV irradiation  

SciTech Connect

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

497

Cosine Interaction in CsF and RbF  

Science Journals Connector (OSTI)

A series of measurements of the line shape of the fluorine resonance versus magnetic field have been made using a molecular-beam apparatus. Good theoretical agreement has been found for RbF. The CsF behavior is complicated by the overlapping Cs spectrum. The equivalent field at the fluorine nucleus per unit molecular rotation, Hr, is found to be 2.280.20 gauss and 3.000.15 gauss for RbF and CsF respectively. These results are less than those previously measured.

G. Bemski; W. A. Nierenberg; H. B. Silsbee

1955-04-15T23:59:59.000Z

498

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

499

Dissociative ionization and neutral dissociation : CF{sub 4}, a case study.  

SciTech Connect

New results for the total neutral dissociation cross section and an estimate of the gross cross section for the production of neutral fluorine by electron impart on CF4 have been obtained by combining previously reported results for the total dissociation cross section and the counting cross section for the total dissociative ionization. This advancement was made possible by recently reported results for multi-cation formation obtained from coincidence experiments. The estimate of the neutral fluorine production cross section is of the same order of magnitude as the total dissociation cross section itself, a similarity which may explain why CF4 is such an effective etching gas.

Bonham, R. A.; Bruce, M. R.; Environmental Research; Univ. of Indiana; Indiana Univ.

1992-01-01T23:59:59.000Z

500

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