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Sample records for cerium 126

  1. Cerium

    SciTech Connect

    1992-11-01

    Cerium in the year 1803, three scientists (M.H. Laproth, J.J. Berzelius, and W. Hisinger) independently discovered cerium (Ce), the first lanthanide element to be isolated. The element`s name is derived from the asteroid Ceres, which was discovered just two years before cerium. The name {open_quotes}cerium{close_quotes} is especially appropriate since cerium, in its +4 ionic state, exhibits a {open_quotes}ceres,{close_quotes} or reddish-orange, color. Cerium has a very high crystal abundance of 46 ppm, similar to that of the very common gas, nitrogen, and abundant metal, copper. Of all the rare earth (RE) ores mined today, the average concentration of cerium in the ore is 46.4 percent, in terms of cerium oxide (CeO{sub 2}) content per total rare earth oxide (REO) by weight. Cerium is therefore the most abundant of all the rare earths, with concentrations as high as 50 percent CeO{sub 2}/REO in Chinese bastnasite and 52 percent in Russian loparites. Based on US Bureau of Mines statistics, CTC estimates that the world`s total mined production of cerium oxide in 1991 was about 24,000 metric tons-almost half of the total rare earth oxides produced.

  2. Cerium Oxide and Cerium Compounds

    Integrated Risk Information System (IRIS)

    Cerium oxide and cerium compounds ; CASRN 1306 - 38 - 3 Human health assessment information on a chemical substance is included in the IRIS database only after a comprehensive review of toxicity data , as outlined in the IRIS assessment development process . Sections I ( Health Hazard Assessments fo

  3. Cerium metallofullerenes

    NASA Astrophysics Data System (ADS)

    Georgi, Petra; Kuran, Pavel; Dunsch, Lothar

    1999-09-01

    With respect to its redox state cerium is of high interest in metallofullerene research as its preferable redox states are 3+ and 4+. As representative structures of the cerium fullerene family both Ce2@C72 and Ce@C82 were prepared by the Krätschmer arc burning method. The metallofullerene Ce2@C72 was isolated for the first time using a two stage HPLC separation technique. The UV-Vis-NIR, IR and ESR spectra were compared with those of other C72 cage metallofullerenes. The existence and stability of the Ce2@C72 structure supports the assumption that the C72 carbon cage can be stabilised by metal ions. The endohedral fullerene Ce@C82 was also isolated by two stage HPLC and characterized by UV-Vis-NIR, IR and ESR spectroscopy for comparison with other endohedral C82 fullerenes. The redox properties of this metallofullerene structure were studied by cyclic voltammetry.

  4. PLUTONIUM-CERIUM ALLOY

    DOEpatents

    Coffinberry, A.S.

    1959-01-01

    An alloy is presented for use as a reactor fuel. The binary alloy consists essentially of from about 5 to 90 atomic per cent cerium and the balance being plutonium. A complete phase diagram for the cerium--plutonium system is given.

  5. Reaction chemistry of cerium

    SciTech Connect

    1997-01-01

    It is truly ironic that a synthetic organic chemist likely has far greater knowledge of the reaction chemistry of cerium(IV) than an inorganic colleague. Cerium(IV) reagents have long since been employed as oxidants in effecting a wide variety of organic transformations. Conversely, prior to the late 1980s, the number of well characterized cerium(IV) complexes did not extend past a handful of known species. Though in many other areas, interest in the molecular chemistry of the 4f-elements has undergone an explosive growth over the last twenty years, the chemistry of cerium(IV) has for the most part been overlooked. This report describes reactions of cerium complexes and structure.

  6. Thermoelectric properties of cerium monopnictides

    NASA Technical Reports Server (NTRS)

    Danielson, L. R.; Alexander, M. N.; Wood, C.; Lockwood, R. A.; Vandersande, J. W.

    1987-01-01

    Several cerium pnictides have been synthesized from the pure elements and hot pressed into test samples. Measurements of Seebeck coefficients and electrical resistivities were performed on these samples from room temperature to 1000 C. Cerium arsenide and cerium antimonide are n-type; cerium nitride changes from p-type to n-type conduction at 800 C. The materials are semimetals with resistivities below 1 mohm/cm. Cerium arsenide is the most favorable of the pnictides studied for high-temperature thermoelectric energy conversion, with an average power factor of 15 microW/cm K sq from 500 to 1000 C.

  7. IRIS Toxicological Review of Cerium Oxide and Cerium Compounds (Interagency Science Discussion Draft)

    EPA Science Inventory

    On September 29, 2009, the IRIS Summary and Toxicological Review of Cerium Oxide and Cerium Compounds was finalized and loaded onto the IRIS database. The Toxicological Review of Cerium Oxide and Cerium Compounds was reviewed internally by EPA, by other federal agencies and Whit...

  8. Preparation of cerium halide solvate complexes

    DOEpatents

    Vasudevan, Kalyan V; Smith, Nickolaus A; Gordon, John C; McKigney, Edward A; Muenchaussen, Ross E

    2013-08-06

    Crystals of a solvated cerium(III) halide solvate complex resulted from a process of forming a paste of a cerium(III) halide in an ionic liquid, adding a solvent to the paste, removing any undissolved solid, and then cooling the liquid phase. Diffusing a solvent vapor into the liquid phase also resulted in crystals of a solvated cerium(III) halide complex.

  9. VIEW OF BUILDING 126, LOOKING NORTH. BUILDING 126, THE SOURCE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF BUILDING 126, LOOKING NORTH. BUILDING 126, THE SOURCE CALIBRATION LABORATORY, WAS USED TO EXPOSE AND CALIBRATE RADIATION DETECTION DEVICES, INCLUDING THERMOLUMINESCENT DOSIMETERS, WORN BY EMPLOYEES TO DETECT RADIATION EXPOSURE - Rocky Flats Plant, Source Calibration Laboratory, Between Second & Third Streets & Central & Cedar Avenues, Golden, Jefferson County, CO

  10. PLUTONIUM-CERIUM-COBALT AND PLUTONIUM-CERIUM-NICKEL ALLOYS

    DOEpatents

    Coffinberry, A.S.

    1959-08-25

    >New plutonium-base teroary alloys useful as liquid reactor fuels are described. The alloys consist of 10 to 20 atomic percent cobalt with the remainder plutonium and cerium in any desired proportion, with the plutonium not in excess of 88 atomic percent; or, of from 10 to 25 atomic percent nickel (or mixture of nickel and cobalt) with the remainder plutonium and cerium in any desired proportion, with the plutonium not in excess of 86 atomic percent. The stated advantages of these alloys over unalloyed plutonium for reactor fuel use are a lower melting point and a wide range of permissible plutonium dilution.

  11. Thermodynamic properties of cerium mononitride

    NASA Astrophysics Data System (ADS)

    Aristova, N. M.; Belov, G. V.

    2014-09-01

    Data on the thermodynamic properties of cerium mononitride CeN in the solid state are analyzed. Relations approximating the temperature dependence of the thermodynamic functions of CeN(cr.) in the temperature range of 298.15-2900 K are obtained. Using the relations of thermodynamics known for this temperature range, the thermodynamic functions of cerium mononitride (entropy, Gibbs energy, and enthalpy variation) are calculated. The resulting data is entered into the database of the IVTANTHERMO software package and is used to analyze the thermal stability of CeN(cr.), and to estimate its boiling point at atmospheric pressure.

  12. PLUTONIUM-CERIUM-COPPER ALLOYS

    DOEpatents

    Coffinberry, A.S.

    1959-05-12

    A low melting point plutonium alloy useful as fuel is a homogeneous liquid metal fueled nuclear reactor is described. Vessels of tungsten or tantalum are useful to contain the alloy which consists essentially of from 10 to 30 atomic per cent copper and the balance plutonium and cerium. with the plutontum not in excess of 50 atomic per cent.

  13. IRIS Toxicological Review of Cerium Oxide and Cerium Compounds (External Review Draft)

    EPA Science Inventory

    EPA conducted a peer review of the scientific basis supporting the human health hazard and dose-response assessment of cerium oxide and cerium compounds that will appear on the Integrated Risk Information System (IRIS) database.

  14. Cerium oxide for sunscreen cosmetics

    NASA Astrophysics Data System (ADS)

    Yabe, Shinryo; Sato, Tsugio

    2003-02-01

    Ultrafine particles of Mn+ -doped ceria ( Mn+ =Mg 2+, Ca 2+, Sr 2+, Ba 2+, Y 3+, La 3+, Nd 3+, Sm 3+, Eu 3+, Tb 3+) for UV filter were prepared via soft solution chemical routes at 40°C. X-ray diffraction revealed that the prepared doped particles had the cubic fluorite structures although peak positions changed depending on the kind and amount of doped metal ion. Doping with 20 mol% Ca 2+ and 20 mol% Zn 2+ resulted in extremely decreasing the particle size (2-4 nm) and the catalytic activity of ceria for oxidation of castor oil. Ca 2+-doped cerium dioxide showed excellent UV absorbing effect and transparency in the visible ray region compared with undoped cerium dioxide.

  15. Grain Growth in Cerium Metal

    NASA Astrophysics Data System (ADS)

    Cooley, Jason; Katz, Martha; Mielke, Charles; Montalvo, Joel

    We report on grain growth in forged and rolled cerium plate for temperatures from 350 to 700 degrees C and times from 30 to 120 minutes. The cerium was made by arc-melting into a 25 mm deep by 80 mm diameter copper mold. The resulting disk was forged at room temperature to a 25% reduction of thickness four times with a 350 degree C strain relief heat treatment for 60 minutes between forging steps. The resulting 8 mm thick plate was clock rolled at room temperature to a 25% reduction of thickness three times with a 350 C strain relief heat treatment between steps resulting in a plate approximately 3 mm thick. 5 x 10 mm coupons were cut from the plate for the grain growth study.

  16. ADSORPTION OF CERIUM VALUES FROM AQUEOUS SOLUTIONS

    DOEpatents

    Roberts, F.P.

    1963-08-13

    Cerium can be removed from aqueous nitric acid (2 to 13 M) solutions by passing the latter over a PbO/sub 2/-containing anion exchange resin. The cerium is taken up by the resin, while any lanthanides, yttrium, and strontium present remain in the solution. (AEC)

  17. Formulation and method for preparing gels comprising hydrous cerium oxide

    DOEpatents

    Collins, Jack L; Chi, Anthony

    2013-05-07

    Formulations useful for preparing hydrous cerium oxide gels contain a metal salt including cerium, an organic base, and a complexing agent. Methods for preparing gels containing hydrous cerium oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including cerium, an organic base, and a complexing agent.

  18. Weakly ionized cerium plasma radiography

    NASA Astrophysics Data System (ADS)

    Sato, Eiichi; Hayasi, Yasuomi; Germer, Rudolf; Koorikawa, Yoshitake; Murakami, Kazunori; Tanaka, Etsuro; Mori, Hidezo; Kawai, Toshiaki; Ichimaru, Toshio; Obata, Fumiko; Takahashi, Kiyomi; Sato, Sigehiro; Takayama, Kazuyoshi; Ido, Hideaki

    2004-02-01

    In the plasma flash x-ray generator, high-voltage main condenser of about 200 nF is charged up to 55 kV by a power supply, and electric charges in the condenser are discharged to an x-ray tube after triggering the cathode electrode. The flash x-rays are then produced. The x-ray tube is of a demountable triode that is connected to a turbo molecular pump with a pressure of approximately 1 mPa. As electron flows from the cathode electrode are roughly converged to a rod cerium target of 3.0 mm in diameter by electric field in the x-ray tube, the weakly ionized linear plasma, which consists of cerium ions and electrons, forms by target evaporating. At a charging voltage of 55 kV, the maximum tube voltage was almost equal to the charging voltage of the main condenser, and the peak current was about 20 kA. When the charging voltage was increased, weakly ionized cerium plasma formed, and the K-series characteristic x-ray intensities increased. The x-ray pulse widths were about 500 ns, and the time-integrated x-ray intensity had a value of about 40 μC/kg at 1.0 m from x-ray source with a charging voltage of 55 kV. In the angiography, we employed a film-less computed radiography (CR) system and iodine-based microspheres. Because K-series characteristic x-rays are absorbed easily by the microspheres, high-contrast angiography has been performed.

  19. Virus Removal by Biogenic Cerium

    SciTech Connect

    De Gusseme, B.; Du Laing, G; Hennebel, T; Renard, P; Chidambaram, D; Fitts, J; Bruneel, E; Van Driessche, I; Verbeken, K; et. al.

    2010-01-01

    The rare earth element cerium has been known to exert antifungal and antibacterial properties in the oxidation states +III and +IV. This study reports on an innovative strategy for virus removal in drinking water by the combination of Ce(III) on a bacterial carrier matrix. The biogenic cerium (bio-Ce) was produced by addition of aqueous Ce(III) to actively growing cultures of either freshwater manganese-oxidizing bacteria (MOB) Leptothrix discophora or Pseudomonas putida MnB29. X-ray absorption spectroscopy results indicated that Ce remained in its trivalent state on the bacterial surface. The spectra were consistent with Ce(III) ions associated with the phosphoryl groups of the bacterial cell wall. In disinfection assays using a bacteriophage as model, it was demonstrated that bio-Ce exhibited antiviral properties. A 4.4 log decrease of the phage was observed after 2 h of contact with 50 mg L{sup -1} bio-Ce. Given the fact that virus removal with 50 mg L{sup -1} Ce(III) as CeNO{sub 3} was lower, the presence of the bacterial carrier matrix in bio-Ce significantly enhanced virus removal.

  20. Virus removal by biogenic cerium.

    PubMed

    De Gusseme, Bart; Du Laing, Gijs; Hennebel, Tom; Renard, Piet; Chidambaram, Dev; Fitts, Jeffrey P; Bruneel, Els; Van Driessche, Isabel; Verbeken, Kim; Boon, Nico; Verstraete, Willy

    2010-08-15

    The rare earth element cerium has been known to exert antifungal and antibacterial properties in the oxidation states +III and +IV. This study reports on an innovative strategy for virus removal in drinking water by the combination of Ce(III) on a bacterial carrier matrix. The biogenic cerium (bio-Ce) was produced by addition of aqueous Ce(III) to actively growing cultures of either freshwater manganese-oxidizing bacteria (MOB) Leptothrix discophora or Pseudomonas putida MnB29. X-ray absorption spectroscopy results indicated that Ce remained in its trivalent state on the bacterial surface. The spectra were consistent with Ce(III) ions associated with the phosphoryl groups of the bacterial cell wall. In disinfection assays using a bacteriophage as model, it was demonstrated that bio-Ce exhibited antiviral properties. A 4.4 log decrease of the phage was observed after 2 h of contact with 50 mg L(-1) bio-Ce. Given the fact that virus removal with 50 mg L(-1) Ce(III) as CeNO(3) was lower, the presence of the bacterial carrier matrix in bio-Ce significantly enhanced virus removal. PMID:20704235

  1. 42 CFR 1003.126 - Settlement.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Settlement. 1003.126 Section 1003.126 Public Health OFFICE OF INSPECTOR GENERAL-HEALTH CARE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OIG AUTHORITIES CIVIL MONEY PENALTIES, ASSESSMENTS AND EXCLUSIONS § 1003.126 Settlement. The Inspector General has...

  2. 42 CFR 1003.126 - Settlement.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 5 2013-10-01 2013-10-01 false Settlement. 1003.126 Section 1003.126 Public Health OFFICE OF INSPECTOR GENERAL-HEALTH CARE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OIG AUTHORITIES CIVIL MONEY PENALTIES, ASSESSMENTS AND EXCLUSIONS § 1003.126 Settlement. The Inspector General has...

  3. 42 CFR 1003.126 - Settlement.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 5 2014-10-01 2014-10-01 false Settlement. 1003.126 Section 1003.126 Public Health OFFICE OF INSPECTOR GENERAL-HEALTH CARE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OIG AUTHORITIES CIVIL MONEY PENALTIES, ASSESSMENTS AND EXCLUSIONS § 1003.126 Settlement. The Inspector General has...

  4. 46 CFR 126.330 - Plans.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Plans. 126.330 Section 126.330 Shipping COAST GUARD... Inspection § 126.330 Plans. Before construction starts, the owner, operator, or builder shall develop plans indicating the proposed arrangement and construction of the vessel. (The list of plans to be developed...

  5. 46 CFR 126.330 - Plans.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Plans. 126.330 Section 126.330 Shipping COAST GUARD... Inspection § 126.330 Plans. Before construction starts, the owner, operator, or builder shall develop plans indicating the proposed arrangement and construction of the vessel. (The list of plans to be developed...

  6. 46 CFR 126.330 - Plans.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Plans. 126.330 Section 126.330 Shipping COAST GUARD... Inspection § 126.330 Plans. Before construction starts, the owner, operator, or builder shall develop plans indicating the proposed arrangement and construction of the vessel. (The list of plans to be developed...

  7. 46 CFR 126.330 - Plans.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Plans. 126.330 Section 126.330 Shipping COAST GUARD... Inspection § 126.330 Plans. Before construction starts, the owner, operator, or builder shall develop plans indicating the proposed arrangement and construction of the vessel. (The list of plans to be developed...

  8. 46 CFR 126.330 - Plans.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Plans. 126.330 Section 126.330 Shipping COAST GUARD... Inspection § 126.330 Plans. Before construction starts, the owner, operator, or builder shall develop plans indicating the proposed arrangement and construction of the vessel. (The list of plans to be developed...

  9. 40 CFR 92.126 - Test run.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 20 2011-07-01 2011-07-01 false Test run. 92.126 Section 92.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Test Procedures § 92.126 Test run. (a) The following...

  10. 40 CFR 92.126 - Test run.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 20 2014-07-01 2013-07-01 true Test run. 92.126 Section 92.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Test Procedures § 92.126 Test run. (a) The following...

  11. 40 CFR 92.126 - Test run.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Test run. 92.126 Section 92.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Test Procedures § 92.126 Test run. (a) The following...

  12. 40 CFR 92.126 - Test run.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 21 2012-07-01 2012-07-01 false Test run. 92.126 Section 92.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Test Procedures § 92.126 Test run. (a) The following...

  13. 40 CFR 92.126 - Test run.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 21 2013-07-01 2013-07-01 false Test run. 92.126 Section 92.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM LOCOMOTIVES AND LOCOMOTIVE ENGINES Test Procedures § 92.126 Test run. (a) The following...

  14. 49 CFR 1.26 - Secretarial succession.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 1 2011-10-01 2011-10-01 false Secretarial succession. 1.26 Section 1.26 Transportation Office of the Secretary of Transportation ORGANIZATION AND DELEGATION OF POWERS AND DUTIES Office of the Secretary § 1.26 Secretarial succession. (a) The following officials, in the order...

  15. 36 CFR 251.126 - Appeals.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Appeals. 251.126 Section 251.126 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE LAND USES Revenue-Producing Visitor Services in Alaska § 251.126 Appeals. Decisions related to the issuance of special...

  16. 36 CFR 251.126 - Appeals.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 2 2011-07-01 2011-07-01 false Appeals. 251.126 Section 251.126 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE LAND USES Revenue-Producing Visitor Services in Alaska § 251.126 Appeals. Decisions related to the issuance of special...

  17. 50 CFR 665.126 - Notifications.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 13 2012-10-01 2012-10-01 false Notifications. 665.126 Section 665.126 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES IN THE WESTERN PACIFIC American Samoa Fisheries § 665.126 Notifications. Any special permit...

  18. 29 CFR 1917.126 - River banks.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 7 2012-07-01 2012-07-01 false River banks. 1917.126 Section 1917.126 Labor Regulations...) MARINE TERMINALS Terminal Facilities § 1917.126 River banks. (a) This section applies to temporary installations or temporary operations near a river bank. (b) Where working surfaces at river banks slope...

  19. 29 CFR 1917.126 - River banks.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false River banks. 1917.126 Section 1917.126 Labor Regulations...) MARINE TERMINALS Terminal Facilities § 1917.126 River banks. (a) This section applies to temporary installations or temporary operations near a river bank. (b) Where working surfaces at river banks slope...

  20. 32 CFR 552.126 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 3 2012-07-01 2009-07-01 true Definitions. 552.126 Section 552.126 National Defense Department of Defense (Continued) DEPARTMENT OF THE ARMY MILITARY RESERVATIONS AND NATIONAL CEMETERIES REGULATIONS AFFECTING MILITARY RESERVATIONS Control of Firearms, Ammunition and Other Dangerous Weapons on Fort Gordon § 552.126...

  1. 22 CFR 126.13 - Required information.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Required information. 126.13 Section 126.13... PROVISIONS § 126.13 Required information. (a) All applications for licenses (DSP-5, DSP-61, DSP-73, and DSP... are multiple consignors, consignees or freight forwarders, and all the required information cannot...

  2. 40 CFR 80.126 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 17 2014-07-01 2014-07-01 false Definitions. 80.126 Section 80.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) REGULATION OF FUELS AND FUEL ADDITIVES Attest Engagements § 80.126 Definitions. The following definitions shall...

  3. 50 CFR 665.126 - Notifications.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 13 2013-10-01 2013-10-01 false Notifications. 665.126 Section 665.126 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES IN THE WESTERN PACIFIC American Samoa Fisheries § 665.126 Notifications. Any special permit...

  4. 50 CFR 665.126 - Notifications.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 9 2010-10-01 2010-10-01 false Notifications. 665.126 Section 665.126 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES IN THE WESTERN PACIFIC American Samoa Fisheries § 665.126 Notifications. Any special permit...

  5. 50 CFR 665.126 - Notifications.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 11 2011-10-01 2011-10-01 false Notifications. 665.126 Section 665.126 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE (CONTINUED) FISHERIES IN THE WESTERN PACIFIC American Samoa Fisheries § 665.126 Notifications. Any special permit...

  6. 22 CFR 126.13 - Required information.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Required information. 126.13 Section 126.13 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.13 Required information. (a) All applications for licenses (DSP-5, DSP-61, DSP-73, and...

  7. 22 CFR 126.3 - Exceptions.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Exceptions. 126.3 Section 126.3 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.3 Exceptions. In a case of exceptional or undue hardship, or when it is otherwise in the...

  8. 22 CFR 126.3 - Exceptions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Exceptions. 126.3 Section 126.3 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.3 Exceptions. In a case of exceptional or undue hardship, or when it is otherwise in the...

  9. 22 CFR 126.3 - Exceptions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Exceptions. 126.3 Section 126.3 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.3 Exceptions. In a case of exceptional or undue hardship, or when it is otherwise in the...

  10. 22 CFR 126.3 - Exceptions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Exceptions. 126.3 Section 126.3 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.3 Exceptions. In a case of exceptional or undue hardship, or when it is otherwise in the...

  11. 22 CFR 126.5 - Canadian exemptions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Canadian exemptions. 126.5 Section 126.5 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.5 Canadian exemptions. (a) Temporary import of defense articles. Port Director of U.S. Customs and Border Protection and postmasters...

  12. 22 CFR 126.5 - Canadian exemptions.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Canadian exemptions. 126.5 Section 126.5 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.5 Canadian exemptions. (a) Temporary import of defense articles. Port Director of U.S. Customs and Border Protection and postmasters...

  13. 7 CFR 762.126 - Security requirements.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 7 2012-01-01 2012-01-01 false Security requirements. 762.126 Section 762.126... AGRICULTURE SPECIAL PROGRAMS GUARANTEED FARM LOANS § 762.126 Security requirements. (a) General. (1) The lender is responsible for ensuring that proper and adequate security is obtained and maintained to...

  14. 7 CFR 762.126 - Security requirements.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 7 2014-01-01 2014-01-01 false Security requirements. 762.126 Section 762.126... AGRICULTURE SPECIAL PROGRAMS GUARANTEED FARM LOANS § 762.126 Security requirements. (a) General. (1) The lender is responsible for ensuring that proper and adequate security is obtained and maintained to...

  15. 49 CFR 1.26 - Secretarial succession.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Secretarial succession. 1.26 Section 1.26 Transportation Office of the Secretary of Transportation ORGANIZATION AND DELEGATION OF POWERS AND DUTIES Office of the Secretary § 1.26 Secretarial succession. (a) The following officials, in the order...

  16. 33 CFR 126.3 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Definitions. 126.3 Section 126.3 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.3 Definitions. As used in this part— Break-bulk means packages that are...

  17. 29 CFR 1917.126 - River banks.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 7 2011-07-01 2011-07-01 false River banks. 1917.126 Section 1917.126 Labor Regulations...) MARINE TERMINALS Terminal Facilities § 1917.126 River banks. (a) This section applies to temporary installations or temporary operations near a river bank. (b) Where working surfaces at river banks slope...

  18. 29 CFR 1917.126 - River banks.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 7 2014-07-01 2014-07-01 false River banks. 1917.126 Section 1917.126 Labor Regulations...) MARINE TERMINALS Terminal Facilities § 1917.126 River banks. (a) This section applies to temporary installations or temporary operations near a river bank. (b) Where working surfaces at river banks slope...

  19. 29 CFR 1917.126 - River banks.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 7 2013-07-01 2013-07-01 false River banks. 1917.126 Section 1917.126 Labor Regulations...) MARINE TERMINALS Terminal Facilities § 1917.126 River banks. (a) This section applies to temporary installations or temporary operations near a river bank. (b) Where working surfaces at river banks slope...

  20. 46 CFR 126.140 - Drydocking.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Drydocking. 126.140 Section 126.140 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.140 Drydocking. (a) Unless one or more extensions are authorized by the Commandant (CG-CVC), each OSV must be placed in drydock or...

  1. 46 CFR 126.130 - Cranes.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Cranes. 126.130 Section 126.130 Shipping COAST GUARD... § 126.130 Cranes. (a) Except as provided by paragraph (b) of this section, cranes, if installed, must... chapter. (b) The manufacturer of a crane may have tests and inspections conducted in compliance with §...

  2. 46 CFR 126.130 - Cranes.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Cranes. 126.130 Section 126.130 Shipping COAST GUARD... § 126.130 Cranes. (a) Except as provided by paragraph (b) of this section, cranes, if installed, must... chapter. (b) The manufacturer of a crane may have tests and inspections conducted in compliance with §...

  3. 46 CFR 126.130 - Cranes.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Cranes. 126.130 Section 126.130 Shipping COAST GUARD... § 126.130 Cranes. (a) Except as provided by paragraph (b) of this section, cranes, if installed, must... chapter. (b) The manufacturer of a crane may have tests and inspections conducted in compliance with §...

  4. 46 CFR 126.130 - Cranes.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Cranes. 126.130 Section 126.130 Shipping COAST GUARD... § 126.130 Cranes. (a) Except as provided by paragraph (b) of this section, cranes, if installed, must... chapter. (b) The manufacturer of a crane may have tests and inspections conducted in compliance with §...

  5. 46 CFR 126.130 - Cranes.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Cranes. 126.130 Section 126.130 Shipping COAST GUARD... § 126.130 Cranes. (a) Except as provided by paragraph (b) of this section, cranes, if installed, must... chapter. (b) The manufacturer of a crane may have tests and inspections conducted in compliance with §...

  6. 7 CFR 762.126 - Security requirements.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 7 2010-01-01 2010-01-01 false Security requirements. 762.126 Section 762.126... AGRICULTURE SPECIAL PROGRAMS GUARANTEED FARM LOANS § 762.126 Security requirements. (a) General. (1) The lender is responsible for ensuring that proper and adequate security is obtained and maintained to...

  7. 7 CFR 762.126 - Security requirements.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 7 2011-01-01 2011-01-01 false Security requirements. 762.126 Section 762.126... AGRICULTURE SPECIAL PROGRAMS GUARANTEED FARM LOANS § 762.126 Security requirements. (a) General. (1) The lender is responsible for ensuring that proper and adequate security is obtained and maintained to...

  8. 5 CFR 185.126 - Evidence.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 1 2010-01-01 2010-01-01 false Evidence. 185.126 Section 185.126 Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PROGRAM FRAUD CIVIL REMEDIES § 185.126 Evidence. (a) The ALJ shall determine the admissibility of evidence. (b) Except as provided...

  9. 32 CFR 643.126 - Transportation licenses.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 4 2013-07-01 2013-07-01 false Transportation licenses. 643.126 Section 643.126... ESTATE Additional Authority of Commanders § 643.126 Transportation licenses. Installation commanders are... free competitive proposals of all available companies or individuals. (b) DD Form 694...

  10. 32 CFR 643.126 - Transportation licenses.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 4 2010-07-01 2010-07-01 true Transportation licenses. 643.126 Section 643.126... ESTATE Additional Authority of Commanders § 643.126 Transportation licenses. Installation commanders are... free competitive proposals of all available companies or individuals. (b) DD Form 694...

  11. 32 CFR 643.126 - Transportation licenses.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 4 2012-07-01 2011-07-01 true Transportation licenses. 643.126 Section 643.126... ESTATE Additional Authority of Commanders § 643.126 Transportation licenses. Installation commanders are... free competitive proposals of all available companies or individuals. (b) DD Form 694...

  12. 32 CFR 643.126 - Transportation licenses.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 4 2014-07-01 2013-07-01 true Transportation licenses. 643.126 Section 643.126... ESTATE Additional Authority of Commanders § 643.126 Transportation licenses. Installation commanders are... free competitive proposals of all available companies or individuals. (b) DD Form 694...

  13. 32 CFR 643.126 - Transportation licenses.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 4 2011-07-01 2011-07-01 false Transportation licenses. 643.126 Section 643.126... ESTATE Additional Authority of Commanders § 643.126 Transportation licenses. Installation commanders are... free competitive proposals of all available companies or individuals. (b) DD Form 694...

  14. Cerium oxide nanoparticles in cancer

    PubMed Central

    Gao, Ying; Chen, Kan; Ma, Jin-lu; Gao, Fei

    2014-01-01

    With the development of many nanomedicines designed for tumor therapy, the diverse abilities of cerium oxide nanoparticles (CONPs) have encouraged researchers to pursue CONPs as a therapeutic agent to treat cancer. Research data have shown CONPs to be toxic to cancer cells, to inhibit invasion, and to sensitize cancer cells to radiation therapy and chemotherapy. CONPs also display minimal toxicity to normal tissues and provide protection from various forms of reactive oxygen species generation. Differential cytotoxicity is important for anticancer drugs to distinguish effectively between tumor cells and normal cells. The antioxidant capabilities of CONPs, which enable cancer therapy protection, have also resulted in the exploration of these particles as a potential anticancer treatment. Taken together, CONPs might be a potential nanomedicine for cancer therapy and this review highlights the current research into CONPs as a novel therapeutic for the treatment of cancer. PMID:24920925

  15. Pharmacological potential of cerium oxidenanoparticles

    NASA Astrophysics Data System (ADS)

    Celardo, Ivana; Pedersen, Jens Z.; Traversa, Enrico; Ghibelli, Lina

    2011-04-01

    Nanotechnology promises a revolution in pharmacology to improve or create ex novo therapies. Cerium oxidenanoparticles (nanoceria), well-known as catalysts, possess an astonishing pharmacological potential due to their antioxidant properties, deriving from a fraction of Ce3+ ions present in CeO2. These defects, compensated by oxygen vacancies, are enriched at the surface and therefore in nanosized particles. Reactions involving redox cycles between the Ce3+ and Ce4+oxidation states allow nanoceria to react catalytically with superoxide and hydrogen peroxide, mimicking the behavior of two key antioxidant enzymes, superoxide dismutase and catalase, potentially abating all noxious intracellularreactive oxygen species (ROS) via a self-regenerating mechanism. Hence nanoceria, apparently well tolerated by the organism, might fight chronic inflammation and the pathologies associated with oxidative stress, which include cancer and neurodegeneration. Here we review the biological effects of nanoceria as they emerge from in vitro and in vivo studies, considering biocompatibility and the peculiar antioxidant mechanisms.

  16. The formation of light emitting cerium silicates in cerium-doped silicon oxides

    SciTech Connect

    Li Jing; Zalloum, Othman; Roschuk, Tyler; Heng Chenglin; Wojcik, Jacek; Mascher, Peter

    2009-01-05

    Cerium-doped silicon oxides with cerium concentrations of up to 0.9 at. % were deposited by electron cyclotron resonance plasma enhanced chemical vapor deposition. Bright cerium related photoluminescence, easily seen even under room lighting conditions, was observed from the films and found to be sensitive to film composition and annealing temperature. The film containing 0.9 at. % Ce subjected to anneal in N{sub 2} at 1200 deg. C for 3 h showed the most intense cerium-related emission, easily visible under bright room lighting conditions. This is attributed to the formation of cerium silicate [Ce{sub 2}Si{sub 2}O{sub 7} or Ce{sub 4.667} (SiO{sub 4}){sub 3}O], the presence of which was confirmed by high resolution transmission electron microscopy.

  17. Cerium anomaly at microscale in fossils.

    PubMed

    Gueriau, Pierre; Mocuta, Cristian; Bertrand, Loïc

    2015-09-01

    Patterns in rare earth element (REE) concentrations are essential instruments to assess geochemical processes in Earth and environmental sciences. Excursions in the "cerium anomaly" are widely used to inform on past redox conditions in sediments. This proxy resources to the specificity of cerium to adopt both the +III and +IV oxidation states, while most rare earths are purely trivalent and share very similar reactivity and transport properties. In practical terms, the level of cerium anomaly is established through elemental point quantification and profiling. All these models rely on a supposed homogeneity of the cerium oxidation state within the samples. However, this has never been demonstrated, whereas the cerium concentration can significantly vary within a sample, as shown for fossils, which would vastly complicate interpretation of REE patterns. Here, we report direct micrometric mapping of Ce speciation through synchrotron X-ray absorption spectroscopy and production of local rare earth patterns in paleontological fossil tissues through X-ray fluorescence mapping. The sensitivity of the approach is demonstrated on well-preserved fishes and crustaceans from the Late Cretaceous (ca. 95 million years (Myr) old). The presence of Ce under the +IV form within the fossil tissues is attributed to slightly oxidative local conditions of burial and agrees well with the limited negative cerium anomaly observed in REE patterns. The [Ce(IV)]/[Ce(tot)] ratio appears remarkably stable at the microscale within each fossil and is similar between fossils from the locality. Speciation maps were obtained from an original combination of synchrotron microbeam X-ray fluorescence, absorption spectroscopy, and diffraction, together with light and electron microscopy. This work also highlights the need for more systematic studies of cerium geochemistry at the microscale in paleontological contexts, in particular across fossil histologies. PMID:26239283

  18. 27 CFR 21.126 - Safrole.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2013-04-01 2013-04-01 false Safrole. 21.126 Section 21.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL FORMULAS FOR DENATURED ALCOHOL AND RUM Specifications for Denaturants § 21.126 Safrole. (a) Congealing point. 10.0° to 11.2 °C....

  19. 27 CFR 21.126 - Safrole.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Safrole. 21.126 Section 21.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS FORMULAS FOR DENATURED ALCOHOL AND RUM Specifications for Denaturants § 21.126 Safrole. (a) Congealing point. 10.0° to 11.2 °C....

  20. 27 CFR 21.126 - Safrole.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2012-04-01 2012-04-01 false Safrole. 21.126 Section 21.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS FORMULAS FOR DENATURED ALCOHOL AND RUM Specifications for Denaturants § 21.126 Safrole. (a) Congealing point. 10.0° to 11.2 °C....

  1. 27 CFR 21.126 - Safrole.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2014-04-01 2014-04-01 false Safrole. 21.126 Section 21.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL FORMULAS FOR DENATURED ALCOHOL AND RUM Specifications for Denaturants § 21.126 Safrole. (a) Congealing point. 10.0° to 11.2 °C....

  2. α-Radioactivity of cerium-142

    USGS Publications Warehouse

    Senftle, F.E.; Stern, T.W.; Alekna, V.P.

    1959-01-01

    JOHNSON AND NIER1 have measured the atomic masses of some of the rare-earth isotopes and have shown that the mass difference cerium-142—(barium-138 + helium-4) is equivalent to 1.68 ± 0.10 MeV. Similar results for the naturally occurring samarium and neodymium isotopes show that the α-active isotope of each element is the one having the largest possible decay energy. Rasmussen and others2 suggest that the two or three neutrons just beyond the closed shell of 82 neutrons have decreased binding energies and hence the α-energy has a maximum about 84 neutrons. Johnson and Nier suggest that the α-decay of cerium-142 may take place with enough energy to be experimentally observable. Porschen and Riezler3 examined a sample of un-enriched cerium ammonium citrate using nuclear track plates sensitive to α-particles. No α-activity was observed after a 30-day exposure of 1.2 mgm. of the cerium salt. In 1957 Riezler and Kauw4 reported an alpha activity for an enriched sample of cerium-142. From their results they calculated a half-life of 5.1 × 1015 years with an uncertainty factor of 2.

  3. 7 CFR 1220.126 - Secretary.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE SOYBEAN PROMOTION, RESEARCH, AND CONSUMER INFORMATION Soybean Promotion and Research Order Definitions § 1220.126 Secretary. The...

  4. 7 CFR 1220.126 - Secretary.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE SOYBEAN PROMOTION, RESEARCH, AND CONSUMER INFORMATION Soybean Promotion and Research Order Definitions § 1220.126 Secretary. The...

  5. 7 CFR 1220.126 - Secretary.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE SOYBEAN PROMOTION, RESEARCH, AND CONSUMER INFORMATION Soybean Promotion and Research Order Definitions § 1220.126 Secretary. The...

  6. 7 CFR 1220.126 - Secretary.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE SOYBEAN PROMOTION, RESEARCH, AND CONSUMER INFORMATION Soybean Promotion and Research Order Definitions § 1220.126 Secretary. The...

  7. 7 CFR 1220.126 - Secretary.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE SOYBEAN PROMOTION, RESEARCH, AND CONSUMER INFORMATION Soybean Promotion and Research Order Definitions § 1220.126 Secretary. The...

  8. Nanocrystalline cerium oxide materials for solid fuel cell systems

    DOEpatents

    Brinkman, Kyle S

    2015-05-05

    Disclosed are solid fuel cells, including solid oxide fuel cells and PEM fuel cells that include nanocrystalline cerium oxide materials as a component of the fuel cells. A solid oxide fuel cell can include nanocrystalline cerium oxide as a cathode component and microcrystalline cerium oxide as an electrolyte component, which can prevent mechanical failure and interdiffusion common in other fuel cells. A solid oxide fuel cell can also include nanocrystalline cerium oxide in the anode. A PEM fuel cell can include cerium oxide as a catalyst support in the cathode and optionally also in the anode.

  9. Divalent fluoride doped cerium fluoride scintillator

    DOEpatents

    Anderson, David F.; Sparrow, Robert W.

    1991-01-01

    The use of divalent fluoride dopants in scintillator materials comprising cerium fluoride is disclosed. The preferred divalent fluoride dopants are calcium fluoride, strontium fluoride, and barium fluoride. The preferred amount of divalent fluoride dopant is less than about two percent by weight of the total scintillator. Cerium fluoride scintillator crystals grown with the addition of a divalent fluoride have exhibited better transmissions and higher light outputs than crystals grown without the addition of such dopants. These scintillators are useful in radiation detection and monitoring applications, and are particularly well suited for high-rate applications such as positron emission tomography (PET).

  10. 7 CFR 4279.126 - Loan terms.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 15 2014-01-01 2014-01-01 false Loan terms. 4279.126 Section 4279.126 Agriculture Regulations of the Department of Agriculture (Continued) RURAL BUSINESS-COOPERATIVE SERVICE AND RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GUARANTEED LOANMAKING Business and Industry Loans §...

  11. 7 CFR 4279.126 - Loan terms.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 15 2013-01-01 2013-01-01 false Loan terms. 4279.126 Section 4279.126 Agriculture Regulations of the Department of Agriculture (Continued) RURAL BUSINESS-COOPERATIVE SERVICE AND RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GUARANTEED LOANMAKING Business and Industry Loans §...

  12. 7 CFR 4279.126 - Loan terms.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 15 2012-01-01 2012-01-01 false Loan terms. 4279.126 Section 4279.126 Agriculture Regulations of the Department of Agriculture (Continued) RURAL BUSINESS-COOPERATIVE SERVICE AND RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GUARANTEED LOANMAKING Business and Industry Loans §...

  13. 7 CFR 4279.126 - Loan terms.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 15 2011-01-01 2011-01-01 false Loan terms. 4279.126 Section 4279.126 Agriculture Regulations of the Department of Agriculture (Continued) RURAL BUSINESS-COOPERATIVE SERVICE AND RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GUARANTEED LOANMAKING Business and Industry Loans §...

  14. 9 CFR 3.126 - Facilities, indoor.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Facilities, indoor. 3.126 Section 3.126 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE... ambient temperature shall not be allowed to fall below nor rise above temperatures compatible with...

  15. 29 CFR 570.126 - Parental exemption.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Parental exemption. 570.126 Section 570.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS CHILD LABOR REGULATIONS, ORDERS AND STATEMENTS OF INTERPRETATION General Statements of Interpretation of the Child Labor Provisions of the Fair Labor...

  16. 29 CFR 570.126 - Parental exemption.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 3 2012-07-01 2012-07-01 false Parental exemption. 570.126 Section 570.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS CHILD LABOR REGULATIONS, ORDERS AND STATEMENTS OF INTERPRETATION General Statements of Interpretation of the Child...

  17. 29 CFR 570.126 - Parental exemption.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 3 2013-07-01 2013-07-01 false Parental exemption. 570.126 Section 570.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS CHILD LABOR REGULATIONS, ORDERS AND STATEMENTS OF INTERPRETATION General Statements of Interpretation of the Child...

  18. 29 CFR 570.126 - Parental exemption.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 3 2011-07-01 2011-07-01 false Parental exemption. 570.126 Section 570.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS CHILD LABOR REGULATIONS, ORDERS AND STATEMENTS OF INTERPRETATION General Statements of Interpretation of the Child...

  19. 29 CFR 570.126 - Parental exemption.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 3 2014-07-01 2014-07-01 false Parental exemption. 570.126 Section 570.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR REGULATIONS CHILD LABOR REGULATIONS, ORDERS AND STATEMENTS OF INTERPRETATION General Statements of Interpretation of the Child...

  20. 37 CFR 41.126 - Arbitration.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2011-07-01 2011-07-01 false Arbitration. 41.126 Section... COMMERCE PRACTICE BEFORE THE BOARD OF PATENT APPEALS AND INTERFERENCES Contested Cases § 41.126 Arbitration. (a) Parties to a contested case may resort to binding arbitration to determine any issue in...

  1. 37 CFR 41.126 - Arbitration.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false Arbitration. 41.126 Section... COMMERCE PRACTICE BEFORE THE BOARD OF PATENT APPEALS AND INTERFERENCES Contested Cases § 41.126 Arbitration. (a) Parties to a contested case may resort to binding arbitration to determine any issue in...

  2. 49 CFR 571.126 - Standard No. 126; Electronic stability control systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 6 2011-10-01 2011-10-01 false Standard No. 126; Electronic stability control systems. 571.126 Section 571.126 Transportation Other Regulations Relating to Transportation (Continued) NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION FEDERAL MOTOR VEHICLE SAFETY STANDARDS Federal Motor Vehicle...

  3. Cerium migration during PEM fuel cell accelerated stress testing

    SciTech Connect

    Baker, Andrew M.; Mukundan, Rangachary; Borup, Rodney L.; Spernjak, Dusan; Judge, Elizabeth J.; Advani, Suresh G.; Prasad, Ajay K.

    2016-01-01

    Cerium is a radical scavenger which improves polymer electrolyte membrane (PEM) fuel cell durability. During operation, however, cerium rapidly migrates in the PEM and into the catalyst layers (CLs). In this work, membrane electrode assemblies (MEAs) were subjected to accelerated stress tests (ASTs) under different humidity conditions. Cerium migration was characterized in the MEAs after ASTs using X-ray fluorescence. During fully humidified operation, water flux from cell inlet to outlet generated in-plane cerium gradients. Conversely, cerium profiles were flat during low humidity operation, where in-plane water flux was negligible, however, migration from the PEM into the CLs was enhanced. Humidity cycling resulted in both in-plane cerium gradients due to water flux during the hydration component of the cycle, and significant migration into the CLs. Fluoride and cerium emissions into effluent cell waters were measured during ASTs and correlated, which signifies that ionomer degradation products serve as possible counter-ions for cerium emissions. Fluoride emission rates were also correlated to final PEM cerium contents, which indicates that PEM degradation and cerium migration are coupled. Lastly, it is proposed that cerium migrates from the PEM due to humidification conditions and degradation, and is subsequently stabilized in the CLs by carbon catalyst supports.

  4. Cerium migration during PEM fuel cell accelerated stress testing

    DOE PAGESBeta

    Baker, Andrew M.; Mukundan, Rangachary; Borup, Rodney L.; Spernjak, Dusan; Judge, Elizabeth J.; Advani, Suresh G.; Prasad, Ajay K.

    2016-01-01

    Cerium is a radical scavenger which improves polymer electrolyte membrane (PEM) fuel cell durability. During operation, however, cerium rapidly migrates in the PEM and into the catalyst layers (CLs). In this work, membrane electrode assemblies (MEAs) were subjected to accelerated stress tests (ASTs) under different humidity conditions. Cerium migration was characterized in the MEAs after ASTs using X-ray fluorescence. During fully humidified operation, water flux from cell inlet to outlet generated in-plane cerium gradients. Conversely, cerium profiles were flat during low humidity operation, where in-plane water flux was negligible, however, migration from the PEM into the CLs was enhanced. Humiditymore » cycling resulted in both in-plane cerium gradients due to water flux during the hydration component of the cycle, and significant migration into the CLs. Fluoride and cerium emissions into effluent cell waters were measured during ASTs and correlated, which signifies that ionomer degradation products serve as possible counter-ions for cerium emissions. Fluoride emission rates were also correlated to final PEM cerium contents, which indicates that PEM degradation and cerium migration are coupled. Lastly, it is proposed that cerium migrates from the PEM due to humidification conditions and degradation, and is subsequently stabilized in the CLs by carbon catalyst supports.« less

  5. Texture Control in Cerium Oxide Films (Poster)

    SciTech Connect

    van Hest, M. F. A. M.; Leenheer, A. J.; Perkins, J. D.; Teplin, C. W.; Ginley, D. S.

    2006-05-01

    The conclusions are: (1) Texture control is possible in cerium oxide by epitaxial growth or adjusting the substrate angle; (2) Biaxial (111) texture emerges with inclined angle depositions on glass; and (3) Biaxial (200) texture emerges by epitaxial growth on YSZ.

  6. 7 CFR 4279.126 - Loan terms.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE GUARANTEED LOANMAKING Business and Industry Loans § 4279.126 Loan terms. (a) The maximum repayment for loans on real estate will not exceed 30 years; machinery...

  7. 40 CFR 80.126 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... FUELS AND FUEL ADDITIVES Attest Engagements § 80.126 Definitions. The following definitions shall apply... the CPA or CIA performing the agreed-upon procedures engagement under this subpart. (i) Foot...

  8. 40 CFR 80.126 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... FUELS AND FUEL ADDITIVES Attest Engagements § 80.126 Definitions. The following definitions shall apply... the CPA or CIA performing the agreed-upon procedures engagement under this subpart. (i) Foot...

  9. 22 CFR 126.13 - Required information.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... PROVISIONS § 126.13 Required information. (a) All applications for licenses (DSP-5, DSP-61, DSP-73, and DSP... must be marked at the top as follows: “Attachment to Department of State License Form (insert DSP-5,...

  10. 40 CFR 80.126 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... FUELS AND FUEL ADDITIVES Attest Engagements § 80.126 Definitions. The following definitions shall apply... the CPA or CIA performing the agreed-upon procedures engagement under this subpart. (i) Foot...

  11. Uptake and accumulation of bulk and nanosized cerium oxide particles and ionic cerium by radish (Raphanus sativus L.).

    PubMed

    Zhang, Weilan; Ebbs, Stephen D; Musante, Craig; White, Jason C; Gao, Cunmei; Ma, Xingmao

    2015-01-21

    The potential toxicity and accumulation of engineered nanomaterials (ENMs) in agricultural crops has become an area of great concern and intense investigation. Interestingly, although below-ground vegetables are most likely to accumulate the highest concentrations of ENMs, little work has been done investigating the potential uptake and accumulation of ENMs for this plant group. The overall objective of this study was to evaluate how different forms of cerium (bulk cerium oxide, cerium oxide nanoparticles, and the cerium ion) affected the growth of radish (Raphanus sativus L.) and accumulation of cerium in radish tissues. Ionic cerium (Ce(3+)) had a negative effect on radish growth at 10 mg CeCl3/L, whereas bulk cerium oxide (CeO2) enhanced plant biomass at the same concentration. Treatment with 10 mg/L cerium oxide nanoparticles (CeO2 NPs) had no significant effect on radish growth. Exposure to all forms of cerium resulted in the accumulation of this element in radish tissues, including the edible storage root. However, the accumulation patterns and their effect on plant growth and physiological processes varied with the characteristics of cerium. This study provides a critical frame of reference on the effects of CeO2 NPs versus their bulk and ionic counterparts on radish growth. PMID:25531028

  12. PCB126 Inhibits Adipogenesis of Human Preadipocytes

    PubMed Central

    Gadupudi, Gopi; Gourronc, Francoise A.; Ludewig, Gabriele; Robertson, Larry W.; Klingelhutz, Aloysius J.

    2014-01-01

    Emerging evidence indicates that persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs), are involved in the development of diabetes. Dysfunctional adipocytes play a significant role in initiating insulin resistance. Preadipocytes make up a large portion of adipose tissue and are necessary for the generation of functional mature adipocytes through adipogenesis. PCB126 is a dioxin-like PCB and a potent aryl hydrocarbon receptor (AhR) agonist. We hypothesized that PCB126 may be involved in the development of diabetes through disruption of adipogenesis. Using a newly developed human preadipocyte cell line called NPAD (Normal PreADipocytes), we found that exposure of preadipocytes to PCB126 resulted in significant reduction in their subsequent ability to fully differentiate into adipocytes, more so than when the cells were exposed to PCB126 during differentiation. Reduction in differentiation by PCB126 was associated with downregulation of transcript levels of a key adipocyte transcription factor, PPARγ, and late adipocyte differentiation genes. An AhR antagonist, CH223191, blocked this effect. These studies indicate that preadipocytes are particularly sensitive to the effects of PCB126 and suggest that AhR activation inhibits PPARγ transcription and subsequent adipogenesis. Our results validate the NPAD cell line as a useful model for studying the effects of POPs on adipogenesis. PMID:25304490

  13. Study of cerium phase transitions in shock wave experiments

    SciTech Connect

    Zhernokletov, M. V. Kovalev, A. E.; Komissarov, V. V.; Novikov, M. G.; Zocher, M. A. Cherne, F. J.

    2011-02-15

    Cerium has a complex phase diagram that is explained by the presence of structural phase transitions. Experiments to measure the sound velocities in cerium by two methods were carried out to determine the onset of cerium melting on the Hugoniot. In the pressure range 4-37 GPa, the sound velocity in cerium samples was measured by the counter release method using manganin-based piezoresistive gauges. In the pressure range 35-140 GPa, the sound velocity in cerium was measured by the overtaking release method using carbogal and tetrachloromethane indicator liquids. The samples were loaded with plane shock wave generators using powerful explosive charges. The onset of cerium melting on the Hugoniot at a pressure of about 13 GPa has been ascertained from the measured elastic longitudinal and bulk sound velocities.

  14. Gamma-alpha Isostructural Transition in Cerium

    SciTech Connect

    Lanata, Nicola; Yao, Yong-Xin; Wang, Cai-Zhuang; Ho, Kai-Ming; Schmalian, Jorg; Haule, Kristjan; Kotliar, Gabriel

    2013-11-05

    We present zero-temperature first-principles calculations of elemental cerium and we compute its pressure-volume phase diagram within a theoretical framework able to describe simultaneously both the α and the γ phases. A surprising result revealed by our study is the presence of a clear signature of the transition at zero temperature and that this signature can be observed if and only if the spin-orbit coupling is taken into account. Our calculations indicate that the transition line in the pressure-temperature phase diagram of this material has a low-T critical point at negative pressures, placed very close to zero temperature. This suggests that cerium is very close to being “quantum critical,” in agreement with recent experiments.

  15. Atomic Transition Probabilities for Neutral Cerium

    NASA Astrophysics Data System (ADS)

    Lawler, J. E.; den Hartog, E. A.; Wood, M. P.; Nitz, D. E.; Chisholm, J.; Sobeck, J.

    2009-10-01

    The spectra of neutral cerium (Ce I) and singly ionized cerium (Ce II) are more complex than spectra of other rare earth species. The resulting high density of lines in the visible makes Ce ideal for use in metal halide (MH) High Intensity Discharge (HID) lamps. Inclusion of cerium-iodide in a lamp dose can improve both the Color Rendering Index and luminous efficacy of a MH-HID lamp. Basic spectroscopic data including absolute atomic transition probabilities for Ce I and Ce II are needed for diagnosing and modeling these MH-HID lamps. Recent work on Ce II [1] is now being augmented with similar work on Ce I. Radiative lifetimes from laser induced fluorescence measurements [2] on neutral Ce are being combined with emission branching fractions from spectra recorded using a Fourier transform spectrometer. A total of 14 high resolution spectra are being analyzed to determine branching fractions for 2000 to 3000 lines from 153 upper levels in neutral Ce. Representative data samples and progress to date will be presented. [4pt] [1] J. E. Lawler, C. Sneden, J. J. Cowan, I. I. Ivans, and E. A. Den Hartog, Astrophys. J. Suppl. Ser. 182, 51-79 (2009). [0pt] [2] E. A. Den Hartog, K. P. Buettner, and J. E. Lawler, J. Phys. B: Atomic, Molecular & Optical Physics 42, 085006 (7pp) (2009).

  16. Effects of Cerium Oxide Nanoparticles on Sorghum Plant Traits

    NASA Astrophysics Data System (ADS)

    Mu, L.; Chen, Y.; Darnault, C. J. G.; Rauh, B.; Kresovich, S.; Korte, C.

    2015-12-01

    Nanotechnology and nanomaterials are considered as the development of the modern science. However, besides with that wide application, nanoparticles arouse to the side effects on the environment and human health. As the catalyst of ceramics and fuel industry, Cerium (IV) oxide nanoparticles (CeO2 NPs) can be found in the environment following their use and life-cycle. Therefore, it is critical to assess the potential effects that CeO2 NPs found in soils may have on plants. In this study, CeO2 NPs were analyzed for the potential influence on the sorghum [Sorghum bicolor (L.) Moench] (Reg. no. 126) (PI 154844) growth and traits. The objectives of this research were to determine whether CeO2 NPs impact the sorghum germination and growth characteristics. The sorghum was grown in the greenhouse located at Biosystems Research Complex, Clemson University under different CeO2 NPs treatments (0mg; 100mg; 500mg; 1000mg CeO2 NPs/Kg soil) and harvested around each month. At the end of the each growing period, above ground vegetative tissue was air-dried, ground to 2mm particle size and compositional traits estimated using near-infrared spectroscopy. Also, the NPK value of the sorghum tissue was tested by Clemson Agriculture Center. After the first harvest, the result showed that the height of above ground biomass under the nanoparticles stress was higher than that of control group. This difference between the control and the nanoparticles treatments was significant (F>F0.05; LSD). Our results also indicated that some of the compositional traits were impacted by the different treatments, including the presence and/or concentrations of the nanoparticles.

  17. Local Structure of Cerium in Aluminophosphate and Silicophosphate Glasses

    SciTech Connect

    J Rygel; Y Chen; C Pantano; T Shibata; J Du; L Kokou; R Woodman; J Belcher

    2011-12-31

    The local structure of cerium in two systematic compositional series of glasses, nominally CeP{sub 3}O{sub 9}-AlP{sub 3}O{sub 9} and CeP{sub 3}O{sub 9}-SiP{sub 2}O{sub 7}, was interrogated using X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS) spectroscopy. XPS revealed that, for glasses melted in air, {>=}95% of cerium ions are Ce{sup 3+}. This was independently confirmed using X-ray absorption near edge spectroscopy (XANES). Ce K-edge extended X-ray absorption fine structure (EXAFS) has been used to determine the local structure of Ce{sup 3+}. Near the metaphosphate composition, cerium was found to have an average cerium coordination number of {approx}7.0 and an average cerium-oxygen bond length of 2.41 {angstrom}. The average cerium coordination number and average cerium-oxygen bond distance were found to increase with decreasing cerium concentration in both compositional series. Rare-earth clustering is suggested based on numerical calculations for glasses containing {>=}14 and {>=}15 mol% Ce{sub 2}O{sub 3} for the aluminophosphate and silicophosphate series, respectively.

  18. 40 CFR 721.8657 - Cerium, hydroxy oleate propionate complexes.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 31 2014-07-01 2014-07-01 false Cerium, hydroxy oleate propionate... Specific Chemical Substances § 721.8657 Cerium, hydroxy oleate propionate complexes. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as...

  19. 40 CFR 721.8657 - Cerium, hydroxy oleate propionate complexes.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 31 2011-07-01 2011-07-01 false Cerium, hydroxy oleate propionate... Specific Chemical Substances § 721.8657 Cerium, hydroxy oleate propionate complexes. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as...

  20. 40 CFR 721.8657 - Cerium, hydroxy oleate propionate complexes.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 30 2010-07-01 2010-07-01 false Cerium, hydroxy oleate propionate... Specific Chemical Substances § 721.8657 Cerium, hydroxy oleate propionate complexes. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as...

  1. Local Structure of Cerium in Aluminophosphate and Silicophosphate Glasses

    SciTech Connect

    Rygel, Jennifer L.; Chen, Yongsheng; Pantano, Carlo G.; Shibata, Tomohiro; Du, Jincheng; Kokou, Leopold; Woodman, Robert; Belcher, James

    2011-09-20

    The local structure of cerium in two systematic compositional series of glasses, nominally CeP{sub 3}O{sub 9}-AlP{sub 3}O{sub 9} and CeP{sub 3}O{sub 9}-SiP{sub 2}O{sub 7}, was interrogated using X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS) spectroscopy. XPS revealed that, for glasses melted in air, {>=}95% of cerium ions are Ce{sup 3+}. This was independently confirmed using X-ray absorption near edge spectroscopy (XANES). Ce K-edge extended X-ray absorption fine structure (EXAFS) has been used to determine the local structure of Ce{sup 3+}. Near the metaphosphate composition, cerium was found to have an average cerium coordination number of {approx}7.0 and an average cerium-oxygen bond length of 2.41 {angstrom}. The average cerium coordination number and average cerium-oxygen bond distance were found to increase with decreasing cerium concentration in both compositional series. Rare-earth clustering is suggested based on numerical calculations for glasses containing {>=}14 and {>=}15 mol% Ce{sub 2}O{sub 3} for the aluminophosphate and silicophosphate series, respectively.

  2. 40 CFR 721.8657 - Cerium, hydroxy oleate propionate complexes.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 32 2013-07-01 2013-07-01 false Cerium, hydroxy oleate propionate... Specific Chemical Substances § 721.8657 Cerium, hydroxy oleate propionate complexes. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as...

  3. 40 CFR 721.8657 - Cerium, hydroxy oleate propionate complexes.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 32 2012-07-01 2012-07-01 false Cerium, hydroxy oleate propionate... Specific Chemical Substances § 721.8657 Cerium, hydroxy oleate propionate complexes. (a) Chemical substance and significant new uses subject to reporting. (1) The chemical substance identified as...

  4. RECOVERY OF Pu FROM CERIUM TRIFLUORIDE BY FLUORINATION

    DOEpatents

    Brown, H.S.; Bohlmann, E.G.

    1959-02-10

    An improved process is prcsented for selectively recovering plutonium from a solution containing fission products comprising precipitating cerium trifluoride in the solution for effccting carrier precipitation of plutonium. The resulting carrier precipitate is dried and subjected to fluorination at about 600 C. The plutonium forms a volatile fiuoridc and is so separated from the nonvolatile cerium fluoride.

  5. Cerium migration during PEM fuel cell assembly and operation

    SciTech Connect

    Baker, Andrew M.; Torraco, Dennis; Judge, Elizabeth J.; Spernjak, Dusan; Mukundan, Rangachary; Borup, Rod L.; Advani, Suresh G.; Prasad, Ajay K.

    2015-09-14

    Cerium migration between PEM fuel cell components is influenced by potential-driven mobility, ionic diffusion, and gradients in water content. These factors were investigated in ex situ experiments and in operating fuel cells. Potential-induced migration was measured ex situ in hydrated window cells. Cerium-containing MEAs were also fabricated and tested under ASTs. MEA disassembly and subsequent XRF analysis were used to observe rapid cerium migration during cell assembly and operation. During MEA hot pressing, humidification, and low RH operation at OCV, ionic diffusion causes uniform migration from the membrane into the catalyst layers. During high RH operation at OCV, in-plane cerium gradients arise due to variations in water content. These gradients may diminish the scavenging efficacy of cerium by reducing its proximity to generated radicals.

  6. 46 CFR 126.430 - Scope.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.430 Scope. The inspection for certification is made by a marine inspector to... vessel and its equipment available for inspection, including the following items: (a) Structure....

  7. 46 CFR 126.430 - Scope.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.430 Scope. The inspection for certification is made by a marine inspector to... vessel and its equipment available for inspection, including the following items: (a) Structure....

  8. 46 CFR 126.430 - Scope.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.430 Scope. The inspection for certification is made by a marine inspector to... vessel and its equipment available for inspection, including the following items: (a) Structure....

  9. 46 CFR 126.430 - Scope.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.430 Scope. The inspection for certification is made by a marine inspector to... vessel and its equipment available for inspection, including the following items: (a) Structure....

  10. 40 CFR 93.126 - Exempt projects.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... in 23 CFR part 771. Air Quality Continuation of ride-sharing and van-pooling promotion activities at... that action. Noise attenuation. Emergency or hardship advance land acquisitions (23 CFR 710.503... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Exempt projects. 93.126 Section...

  11. 40 CFR 93.126 - Exempt projects.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... in 23 CFR part 771. Air Quality Continuation of ride-sharing and van-pooling promotion activities at... that action. Noise attenuation. Emergency or hardship advance land acquisitions (23 CFR 710.503... 40 Protection of Environment 20 2014-07-01 2013-07-01 true Exempt projects. 93.126 Section...

  12. 40 CFR 93.126 - Exempt projects.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... in 23 CFR part 771. Air Quality Continuation of ride-sharing and van-pooling promotion activities at... that action. Noise attenuation. Emergency or hardship advance land acquisitions (23 CFR 710.503... 40 Protection of Environment 20 2011-07-01 2011-07-01 false Exempt projects. 93.126 Section...

  13. 40 CFR 93.126 - Exempt projects.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... in 23 CFR part 771. Air Quality Continuation of ride-sharing and van-pooling promotion activities at... that action. Noise attenuation. Emergency or hardship advance land acquisitions (23 CFR 710.503... 40 Protection of Environment 21 2012-07-01 2012-07-01 false Exempt projects. 93.126 Section...

  14. 22 CFR 126.13 - Required information.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... PROVISIONS § 126.13 Required information. (a) All applications for licenses (DSP-5, DSP-61, DSP-73, and DSP... License Form (insert DSP-5, 61, 73, or 85, as appropriate) for Export of (insert commodity) valued at... licenses (DSP-5, DSP-61, DSP-73, and DSP-85), all requests for approval of agreements and...

  15. 33 CFR 157.126 - Pumps.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Washing (COW) System on Tank Vessels Design, Equipment, and Installation § 157.126 Pumps. (a) Crude oil must be supplied to the COW machines by COW system pumps or cargo pumps. (b) The pumps under paragraph...) A sufficient pressure and flow is supplied to allow the simultaneous operation of those COW...

  16. 33 CFR 157.126 - Pumps.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Washing (COW) System on Tank Vessels Design, Equipment, and Installation § 157.126 Pumps. (a) Crude oil must be supplied to the COW machines by COW system pumps or cargo pumps. (b) The pumps under paragraph...) A sufficient pressure and flow is supplied to allow the simultaneous operation of those COW...

  17. 33 CFR 157.126 - Pumps.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Washing (COW) System on Tank Vessels Design, Equipment, and Installation § 157.126 Pumps. (a) Crude oil must be supplied to the COW machines by COW system pumps or cargo pumps. (b) The pumps under paragraph...) A sufficient pressure and flow is supplied to allow the simultaneous operation of those COW...

  18. 33 CFR 157.126 - Pumps.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... THE PROTECTION OF THE MARINE ENVIRONMENT RELATING TO TANK VESSELS CARRYING OIL IN BULK Crude Oil Washing (COW) System on Tank Vessels Design, Equipment, and Installation § 157.126 Pumps. (a) Crude oil... pumps that are capable of supplying oil to the COW machines. (e) The COW system must be designed to...

  19. 33 CFR 157.126 - Pumps.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... THE PROTECTION OF THE MARINE ENVIRONMENT RELATING TO TANK VESSELS CARRYING OIL IN BULK Crude Oil Washing (COW) System on Tank Vessels Design, Equipment, and Installation § 157.126 Pumps. (a) Crude oil... pumps that are capable of supplying oil to the COW machines. (e) The COW system must be designed to...

  20. 5 CFR 1201.126 - Final decisions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 5 Administrative Personnel 3 2010-01-01 2010-01-01 false Final decisions. 1201.126 Section 1201... decisions. (a) In any action to discipline an employee, except as provided in paragraphs (b) or (c) of this... warranted, the administrative law judge, or the Board on petition for review, will issue a written...

  1. Ultrathin, epitaxial cerium dioxide on silicon

    SciTech Connect

    Flege, Jan Ingo Kaemena, Björn; Höcker, Jan; Schmidt, Thomas; Falta, Jens; Bertram, Florian; Wollschläger, Joachim

    2014-03-31

    It is shown that ultrathin, highly ordered, continuous films of cerium dioxide may be prepared on silicon following substrate prepassivation using an atomic layer of chlorine. The as-deposited, few-nanometer-thin Ce{sub 2}O{sub 3} film may very effectively be converted at room temperature to almost fully oxidized CeO{sub 2} by simple exposure to air, as demonstrated by hard X-ray photoemission spectroscopy and X-ray diffraction. This post-oxidation process essentially results in a negligible loss in film crystallinity and interface abruptness.

  2. Cerium and yttrium oxide nanoparticles are neuroprotective

    SciTech Connect

    Schubert, David . E-mail: schubert@salk.edu; Dargusch, Richard; Raitano, Joan; Chan, S.-W.

    2006-03-31

    The responses of cells exposed to nanoparticles have been studied with regard to toxicity, but very little attention has been paid to the possibility that some types of particles can protect cells from various forms of lethal stress. It is shown here that nanoparticles composed of cerium oxide or yttrium oxide protect nerve cells from oxidative stress and that the neuroprotection is independent of particle size. The ceria and yttria nanoparticles act as direct antioxidants to limit the amount of reactive oxygen species required to kill the cells. It follows that this group of nanoparticles could be used to modulate oxidative stress in biological systems.

  3. The surface chemistry of cerium oxide

    DOE PAGESBeta

    Mullins, David R.

    2015-01-29

    Our review covers the structure of, and chemical reactions on, well-defined cerium oxide surfaces. Ceria, or mixed oxides containing ceria, are critical components in automotive three-way catalysts due to their well-known oxygen storage capacity. Ceria is also emerging as an important material in a number of other catalytic processes, particularly those involving organic oxygenates and the water–gas shift reaction. Ceria's acid–base properties, and thus its catalytic behavior, are closely related to its surface structure where different oxygen anion and cerium cation environments are present on the low-index structural faces. The actual structure of these various faces has been the focusmore » of a number of theoretical and experimental investigations. Ceria is also easily reducible from CeO2 to CeO2-X. The presence of oxygen vacancies on the surface often dramatically alters the adsorption and subsequent reactions of various adsorbates, either on a clean surface or on metal particles supported on the surface. We conducted surface science studies on the surfaces of thin-films rather than on the surfaces of bulk single crystal oxides. The growth, characterization and properties of these thin-films are also examined.« less

  4. Photodissociation of Cerium Oxide Nanocluster Cations.

    PubMed

    Akin, S T; Ard, S G; Dye, B E; Schaefer, H F; Duncan, M A

    2016-04-21

    Cerium oxide cluster cations, CexOy(+), are produced via laser vaporization in a pulsed nozzle source and detected with time-of-flight mass spectrometry. The mass spectrum displays a strongly preferred oxide stoichiometry for each cluster with a specific number of metal atoms x, with x ≤ y. Specifically, the most prominent clusters correspond to the formula CeO(CeO2)n(+). The cluster cations are mass selected and photodissociated with a Nd:YAG laser at either 532 or 355 nm. The prominent clusters dissociate to produce smaller species also having a similar CeO(CeO2)n(+) formula, always with apparent leaving groups of (CeO2). The production of CeO(CeO2)n(+) from the dissociation of many cluster sizes establishes the relative stability of these clusters. Furthermore, the consistent loss of neutral CeO2 shows that the smallest neutral clusters adopt the same oxidation state (IV) as the most common form of bulk cerium oxide. Clusters with higher oxygen content than the CeO(CeO2)n(+) masses are present with much lower abundance. These species dissociate by the loss of O2, leaving surviving clusters with the CeO(CeO2)n(+) formula. Density functional theory calculations on these clusters suggest structures composed of stable CeO(CeO2)n(+) cores with excess oxygen bound to the surface as a superoxide unit (O2(-)). PMID:27035210

  5. Microstructure of surface cerium hydride growth sites

    SciTech Connect

    Brierley, Martin; Knowles, John; Montgomery, Neil; Preuss, Michael

    2014-05-15

    Samples of cerium were exposed to hydrogen under controlled conditions causing cerium hydride sites to nucleate and grow on the surface. The hydriding rate was measured in situ, and the hydrides were characterised using secondary ion mass spectrometry, scanning electron microscopy, and optical microscopy. The results show that the hydriding rate proceeded more quickly than earlier studies. Characterisation confirmed that the hydrogen is confined to the sites. The morphology of the hydrides was confirmed to be oblate, and stressed material was observed surrounding the hydride, in a number of cases lathlike features were observed surrounding the hydride sites laterally with cracking in the surface oxide above them. It is proposed that during growth the increased lattice parameter of the CeH{sub 2} induces a lateral compressive stress around the hydride, which relieves by the ca. 16% volume collapse of the γ-Ce to α-Ce pressure induced phase transition. Cracking of the surface oxide above the laths reduces the diffusion barrier to hydrogen reaching the metal/oxide interface surrounding the hydride site and contributes to the anisotropic growth of the hydrides.

  6. The surface chemistry of cerium oxide

    SciTech Connect

    Mullins, David R.

    2015-01-29

    Our review covers the structure of, and chemical reactions on, well-defined cerium oxide surfaces. Ceria, or mixed oxides containing ceria, are critical components in automotive three-way catalysts due to their well-known oxygen storage capacity. Ceria is also emerging as an important material in a number of other catalytic processes, particularly those involving organic oxygenates and the water–gas shift reaction. Ceria's acid–base properties, and thus its catalytic behavior, are closely related to its surface structure where different oxygen anion and cerium cation environments are present on the low-index structural faces. The actual structure of these various faces has been the focus of a number of theoretical and experimental investigations. Ceria is also easily reducible from CeO2 to CeO2-X. The presence of oxygen vacancies on the surface often dramatically alters the adsorption and subsequent reactions of various adsorbates, either on a clean surface or on metal particles supported on the surface. We conducted surface science studies on the surfaces of thin-films rather than on the surfaces of bulk single crystal oxides. The growth, characterization and properties of these thin-films are also examined.

  7. 33 CFR 126.3 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... any of the following: (1) Division 1.1 and 1.2 explosives, as defined in 49 CFR 173.50, for which a permit is required under 33 CFR 126.17. (2) Ammonium nitrate products, division 5.1 (oxidizing) materials listed in 49 CFR 176.410, for which a permit is required under 49 CFR 176.415. (3) Division 4.3...

  8. 33 CFR 126.3 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... any of the following: (1) Division 1.1 and 1.2 explosives, as defined in 49 CFR 173.50, for which a permit is required under 33 CFR 126.17. (2) Ammonium nitrate products, division 5.1 (oxidizing) materials listed in 49 CFR 176.410, for which a permit is required under 49 CFR 176.415. (3) Division 4.3...

  9. 33 CFR 126.3 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... any of the following: (1) Division 1.1 and 1.2 explosives, as defined in 49 CFR 173.50, for which a permit is required under 33 CFR 126.17. (2) Ammonium nitrate products, division 5.1 (oxidizing) materials listed in 49 CFR 176.410, for which a permit is required under 49 CFR 176.415. (3) Division 4.3...

  10. 33 CFR 126.3 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... any of the following: (1) Division 1.1 and 1.2 explosives, as defined in 49 CFR 173.50, for which a permit is required under 33 CFR 126.17. (2) Ammonium nitrate products, division 5.1 (oxidizing) materials listed in 49 CFR 176.410, for which a permit is required under 49 CFR 176.415. (3) Division 4.3...

  11. Optical glass surfaces polishing by cerium oxide particles

    NASA Astrophysics Data System (ADS)

    Bouzid, D.; Belkhie, N.; Aliouane, T.

    2012-02-01

    The use of powders in metallic oxides as means of grinding and polishing of the optical glass components have seen recently a large application in optical industry. In fact, cerium oxide abrasive is more used in the optical glass polishing. It is used as grains abrasive in suspension or fixed abrasive (pellets); these pellets are manufactured from a mixture made of cerium oxide abrasive and a organic binder. The cerium oxide used in the experiments is made by (Logitech USA) of 99 % purity, the average grain size of the particle is 300 nm, the density being 6,74 g /cm3 and the specific surface is 3,3042 m2/g. In this study, we are interested in the surfaces quality of the optical glass borosilicate crown (BK7) polished by particles in cerium oxide bounded by epoxy. The surfaces of the optical glass treated are characterized by the roughness, the flatness by using the microscope Zygo and the SEM.

  12. Cerium migration during PEM fuel cell assembly and operation

    DOE PAGESBeta

    Baker, Andrew M.; Torraco, Dennis; Judge, Elizabeth J.; Spernjak, Dusan; Mukundan, Rangachary; Borup, Rod L.; Advani, Suresh G.; Prasad, Ajay K.

    2015-10-02

    Cerium migration between PEM fuel cell components is influenced by potential-driven mobility, ionic diffusion, and gradients in water content. These factors were investigated in ex situ experiments and in operating fuel cells. Potential-induced migration was measured ex situ in hydrated window cells. Cerium-containing MEAs were also fabricated and tested under ASTs. MEA disassembly and subsequent XRF analysis were used to observe rapid cerium migration during cell assembly and operation. During MEA hot pressing, humidification, and low RH operation at OCV, ionic diffusion causes uniform migration from the membrane into the catalyst layers. During high RH operation at OCV, in-plane ceriummore » gradients arise due to variations in water content. These gradients may diminish the scavenging efficacy of cerium by reducing its proximity to generated radicals.« less

  13. Heteroaggregation of cerium oxide nanoparticles and nanoparticles of pyrolyzed biomass

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Heteroaggregation with indigenous particles is an important process controlling the mobility of engineered nanomaterials in the environment. We studied heteroaggregation of cerium oxide nanoparticles (n-CeO2), which are widely used commercially, with nanoparticles of pyrogenic carbonaceous material ...

  14. 30 CFR 550.126 - Electronic payment instructions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 2 2013-07-01 2013-07-01 false Electronic payment instructions. 550.126 Section 550.126 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF General Fees § 550.126...

  15. 30 CFR 550.126 - Electronic payment instructions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 2 2012-07-01 2012-07-01 false Electronic payment instructions. 550.126 Section 550.126 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF General Fees § 550.126...

  16. 30 CFR 550.126 - Electronic payment instructions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 2 2014-07-01 2014-07-01 false Electronic payment instructions. 550.126 Section 550.126 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF General Fees § 550.126...

  17. 30 CFR 250.126 - Electronic payment instructions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 2 2010-07-01 2010-07-01 false Electronic payment instructions. 250.126 Section 250.126 Mineral Resources MINERALS MANAGEMENT SERVICE, DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF General Fees § 250.126 Electronic...

  18. 30 CFR 250.126 - Electronic payment instructions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 2 2011-07-01 2011-07-01 false Electronic payment instructions. 250.126 Section 250.126 Mineral Resources BUREAU OF OCEAN ENERGY MANAGEMENT, REGULATION, AND ENFORCEMENT... Fees § 250.126 Electronic payment instructions. You must file all payments electronically through...

  19. 13 CFR 126.600 - What are HUBZone contracts?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What are HUBZone contracts? 126.600 Section 126.600 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Contractual Assistance § 126.600 What are HUBZone contracts? HUBZone contracts are contracts awarded to...

  20. 46 CFR 126.110 - Inspection after accident.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Inspection after accident. 126.110 Section 126.110 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.110 Inspection after accident. (a) The owner or operator of an OSV shall make...

  1. 46 CFR 126.450 - Fire-extinguishing equipment.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Fire-extinguishing equipment. 126.450 Section 126.450 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.450 Fire-extinguishing equipment. At each inspection...

  2. 46 CFR 126.110 - Inspection after accident.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Inspection after accident. 126.110 Section 126.110 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.110 Inspection after accident. (a) The owner or operator of an OSV shall make...

  3. 46 CFR 126.110 - Inspection after accident.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Inspection after accident. 126.110 Section 126.110 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.110 Inspection after accident. (a) The owner or operator of an OSV shall make...

  4. 46 CFR 126.450 - Fire-extinguishing equipment.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Fire-extinguishing equipment. 126.450 Section 126.450 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.450 Fire-extinguishing equipment. At each inspection...

  5. 46 CFR 126.450 - Fire-extinguishing equipment.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Fire-extinguishing equipment. 126.450 Section 126.450 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.450 Fire-extinguishing equipment. At each inspection...

  6. 46 CFR 126.450 - Fire-extinguishing equipment.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Fire-extinguishing equipment. 126.450 Section 126.450 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.450 Fire-extinguishing equipment. At each inspection...

  7. 46 CFR 126.110 - Inspection after accident.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Inspection after accident. 126.110 Section 126.110 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.110 Inspection after accident. (a) The owner or operator of an OSV shall make...

  8. 46 CFR 126.450 - Fire-extinguishing equipment.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Fire-extinguishing equipment. 126.450 Section 126.450 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.450 Fire-extinguishing equipment. At each inspection...

  9. 46 CFR 126.110 - Inspection after accident.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Inspection after accident. 126.110 Section 126.110 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.110 Inspection after accident. (a) The owner or operator of an OSV shall make...

  10. 21 CFR 152.126 - Frozen cherry pie.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 2 2014-04-01 2014-04-01 false Frozen cherry pie. 152.126 Section 152.126 Food... HUMAN CONSUMPTION FRUIT PIES Requirements for Specific Standardized Fruit Pies § 152.126 Frozen cherry pie. (a) Identity. (1) Frozen cherry pie (excluding baked and then frozen) is the food prepared...

  11. 21 CFR 152.126 - Frozen cherry pie.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Frozen cherry pie. 152.126 Section 152.126 Food... HUMAN CONSUMPTION FRUIT PIES Requirements for Specific Standardized Fruit Pies § 152.126 Frozen cherry pie. (a) Identity. (1) Frozen cherry pie (excluding baked and then frozen) is the food prepared...

  12. 21 CFR 152.126 - Frozen cherry pie.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Frozen cherry pie. 152.126 Section 152.126 Food... HUMAN CONSUMPTION FRUIT PIES Requirements for Specific Standardized Fruit Pies § 152.126 Frozen cherry pie. (a) Identity. (1) Frozen cherry pie (excluding baked and then frozen) is the food prepared...

  13. 21 CFR 152.126 - Frozen cherry pie.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 2 2013-04-01 2013-04-01 false Frozen cherry pie. 152.126 Section 152.126 Food... HUMAN CONSUMPTION FRUIT PIES Requirements for Specific Standardized Fruit Pies § 152.126 Frozen cherry pie. (a) Identity. (1) Frozen cherry pie (excluding baked and then frozen) is the food prepared...

  14. 21 CFR 152.126 - Frozen cherry pie.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 2 2012-04-01 2012-04-01 false Frozen cherry pie. 152.126 Section 152.126 Food... HUMAN CONSUMPTION FRUIT PIES Requirements for Specific Standardized Fruit Pies § 152.126 Frozen cherry pie. (a) Identity. (1) Frozen cherry pie (excluding baked and then frozen) is the food prepared...

  15. 46 CFR 126.170 - Carriage of offshore workers.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Carriage of offshore workers. 126.170 Section 126.170 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION General § 126.170 Carriage of offshore workers. (a) Offshore workers may be carried aboard an...

  16. 42 CFR 424.126 - Payment to the hospital.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Payment to the hospital. 424.126 Section 424.126... Foreign Country § 424.126 Payment to the hospital. (a) Conditions for payment. Medicare pays the hospital...) Reflects the hospital's intent to claim for all covered services furnished during a calendar year....

  17. 17 CFR 12.6 - Extensions of time; adjournments; postponements.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 17 Commodity and Securities Exchanges 1 2010-04-01 2010-04-01 false Extensions of time; adjournments; postponements. 12.6 Section 12.6 Commodity and Securities Exchanges COMMODITY FUTURES TRADING COMMISSION RULES RELATING TO REPARATIONS General Information and Preliminary Consideration of Pleadings § 12.6 Extensions of time;...

  18. 46 CFR 126.470 - Marine-engineering systems.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 46 Shipping 4 2014-10-01 2014-10-01 false Marine-engineering systems. 126.470 Section 126.470... CERTIFICATION Inspection for Certification § 126.470 Marine-engineering systems. The inspection procedures for marine-engineering systems contained in subchapter F of this chapter apply....

  19. 46 CFR 126.470 - Marine-engineering systems.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 46 Shipping 4 2013-10-01 2013-10-01 false Marine-engineering systems. 126.470 Section 126.470... CERTIFICATION Inspection for Certification § 126.470 Marine-engineering systems. The inspection procedures for marine-engineering systems contained in subchapter F of this chapter apply....

  20. 46 CFR 126.470 - Marine-engineering systems.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 4 2011-10-01 2011-10-01 false Marine-engineering systems. 126.470 Section 126.470 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Inspection for Certification § 126.470 Marine-engineering systems. The inspection procedures for marine-engineering systems...

  1. 46 CFR 126.470 - Marine-engineering systems.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 4 2012-10-01 2012-10-01 false Marine-engineering systems. 126.470 Section 126.470... CERTIFICATION Inspection for Certification § 126.470 Marine-engineering systems. The inspection procedures for marine-engineering systems contained in subchapter F of this chapter apply....

  2. 40 CFR 98.126 - Data reporting requirements.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 21 2014-07-01 2014-07-01 false Data reporting requirements. 98.126 Section 98.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR PROGRAMS (CONTINUED) MANDATORY GREENHOUSE GAS REPORTING Fluorinated Gas Production § 98.126 Data reporting requirements. (a) All facilities. In addition to...

  3. 21 CFR 814.126 - Postapproval requirements and reports.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Postapproval requirements and reports. 814.126 Section 814.126 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES Humanitarian Use Devices § 814.126 Postapproval requirements and reports. (a) An...

  4. 46 CFR 126.470 - Marine-engineering systems.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Marine-engineering systems. 126.470 Section 126.470... CERTIFICATION Inspection for Certification § 126.470 Marine-engineering systems. The inspection procedures for marine-engineering systems contained in subchapter F of this chapter apply....

  5. 22 CFR 126.10 - Disclosure of information.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Disclosure of information. 126.10 Section 126... AND PROVISIONS § 126.10 Disclosure of information. (a) Freedom of information. Subchapter R of this title contains regulations on the availability to the public of information and records of...

  6. 22 CFR 126.12 - Continuation in force.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Continuation in force. 126.12 Section 126.12... PROVISIONS § 126.12 Continuation in force. All determinations, authorizations, licenses, approvals of... previous provisions of this subchapter, continue in full force and effect until or unless modified,...

  7. 22 CFR 126.12 - Continuation in force.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Continuation in force. 126.12 Section 126.12... PROVISIONS § 126.12 Continuation in force. All determinations, authorizations, licenses, approvals of... previous provisions of this subchapter, continue in full force and effect until or unless modified,...

  8. 22 CFR 126.12 - Continuation in force.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Continuation in force. 126.12 Section 126.12... PROVISIONS § 126.12 Continuation in force. All determinations, authorizations, licenses, approvals of... previous provisions of this subchapter, continue in full force and effect until or unless modified,...

  9. 22 CFR 126.12 - Continuation in force.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Continuation in force. 126.12 Section 126.12... PROVISIONS § 126.12 Continuation in force. All determinations, authorizations, licenses, approvals of... previous provisions of this subchapter, continue in full force and effect until or unless modified,...

  10. 22 CFR 126.12 - Continuation in force.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Continuation in force. 126.12 Section 126.12... PROVISIONS § 126.12 Continuation in force. All determinations, authorizations, licenses, approvals of... previous provisions of this subchapter, continue in full force and effect until or unless modified,...

  11. 22 CFR 126.9 - Advisory opinions and related authorizations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Advisory opinions and related authorizations. 126.9 Section 126.9 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.9 Advisory opinions and related authorizations. (a) Advisory...

  12. 7 CFR 1726.126-1726.149 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 11 2011-01-01 2011-01-01 false 1726.126-1726.149 Section 1726.126-1726.149 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE ELECTRIC SYSTEM CONSTRUCTION POLICIES AND PROCEDURES Generation Facilities §§ 1726.126-1726.149...

  13. 7 CFR 1726.126-1726.149 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 11 2014-01-01 2014-01-01 false 1726.126-1726.149 Section 1726.126-1726.149 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE ELECTRIC SYSTEM CONSTRUCTION POLICIES AND PROCEDURES Generation Facilities §§ 1726.126-1726.149...

  14. 7 CFR 1726.126-1726.149 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 11 2012-01-01 2012-01-01 false 1726.126-1726.149 Section 1726.126-1726.149 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE ELECTRIC SYSTEM CONSTRUCTION POLICIES AND PROCEDURES Generation Facilities §§ 1726.126-1726.149...

  15. 7 CFR 1726.126-1726.149 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 11 2013-01-01 2013-01-01 false 1726.126-1726.149 Section 1726.126-1726.149 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE ELECTRIC SYSTEM CONSTRUCTION POLICIES AND PROCEDURES Generation Facilities §§ 1726.126-1726.149...

  16. 7 CFR 1726.126-1726.149 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 11 2010-01-01 2010-01-01 false 1726.126-1726.149 Section 1726.126-1726.149 Agriculture Regulations of the Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE ELECTRIC SYSTEM CONSTRUCTION POLICIES AND PROCEDURES Generation Facilities §§ 1726.126-1726.149...

  17. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 5 2011-01-01 2010-01-01 true Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  18. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 5 2010-01-01 2010-01-01 false Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  19. 32 CFR 865.126 - Sample report format.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 6 2011-07-01 2011-07-01 false Sample report format. 865.126 Section 865.126...-GENERAL PERSONNEL REVIEW BOARDS Air Force Discharge Review Board § 865.126 Sample report format. Summary of Statistics for Air Force Discharge Review Board RCS: DD-M(SA) 1489 Record review Applied...

  20. 32 CFR 865.126 - Sample report format.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 6 2012-07-01 2012-07-01 false Sample report format. 865.126 Section 865.126...-GENERAL PERSONNEL REVIEW BOARDS Air Force Discharge Review Board § 865.126 Sample report format. Summary of Statistics for Air Force Discharge Review Board RCS: DD-M(SA) 1489 Record review Applied...

  1. 32 CFR 865.126 - Sample report format.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 6 2014-07-01 2014-07-01 false Sample report format. 865.126 Section 865.126...-GENERAL PERSONNEL REVIEW BOARDS Air Force Discharge Review Board § 865.126 Sample report format. Summary of Statistics for Air Force Discharge Review Board RCS: DD-M(SA) 1489 Record review Applied...

  2. 32 CFR 865.126 - Sample report format.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 6 2013-07-01 2013-07-01 false Sample report format. 865.126 Section 865.126 National Defense Department of Defense (Continued) DEPARTMENT OF THE AIR FORCE ORGANIZATION AND MISSION-GENERAL PERSONNEL REVIEW BOARDS Air Force Discharge Review Board § 865.126 Sample report format. Summary of Statistics for Air Force...

  3. 32 CFR 865.126 - Sample report format.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Sample report format. 865.126 Section 865.126...-GENERAL PERSONNEL REVIEW BOARDS Air Force Discharge Review Board § 865.126 Sample report format. Summary of Statistics for Air Force Discharge Review Board RCS: DD-M(SA) 1489 Record review Applied...

  4. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 5 2012-01-01 2012-01-01 false Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  5. 14 CFR § 1264.126 - Computation of time.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 5 2014-01-01 2014-01-01 false Computation of time. § 1264.126 Section § 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period...

  6. 14 CFR 1264.126 - Computation of time.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 5 2013-01-01 2013-01-01 false Computation of time. 1264.126 Section 1264.126 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION IMPLEMENTATION OF THE PROGRAM FRAUD CIVIL PENALTIES ACT OF 1986 § 1264.126 Computation of time. (a) In computing any period of...

  7. 7 CFR 927.126 - Processed pear reports.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 8 2010-01-01 2010-01-01 false Processed pear reports. 927.126 Section 927.126... Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Rules and Regulations Reports § 927.126 Processed pear reports. (a) Each handler shall furnish...

  8. 7 CFR 927.126 - Processed pear reports.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 8 2011-01-01 2011-01-01 false Processed pear reports. 927.126 Section 927.126... Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Rules and Regulations Reports § 927.126 Processed pear reports. (a) Each handler shall furnish...

  9. 7 CFR 927.126 - Processed pear reports.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 8 2014-01-01 2014-01-01 false Processed pear reports. 927.126 Section 927.126... AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Rules and Regulations Reports § 927.126 Processed pear reports. (a) Each handler shall furnish...

  10. 7 CFR 927.126 - Processed pear reports.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 8 2012-01-01 2012-01-01 false Processed pear reports. 927.126 Section 927.126... Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Rules and Regulations Reports § 927.126 Processed pear reports. (a) Each handler shall furnish...

  11. 7 CFR 927.126 - Processed pear reports.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 8 2013-01-01 2013-01-01 false Processed pear reports. 927.126 Section 927.126... AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Rules and Regulations Reports § 927.126 Processed pear reports. (a) Each handler shall furnish...

  12. Method of applying a cerium diffusion coating to a metallic alloy

    DOEpatents

    Jablonski, Paul D.; Alman, David E.

    2009-06-30

    A method of applying a cerium diffusion coating to a preferred nickel base alloy substrate has been discovered. A cerium oxide paste containing a halide activator is applied to the polished substrate and then dried. The workpiece is heated in a non-oxidizing atmosphere to diffuse cerium into the substrate. After cooling, any remaining cerium oxide is removed. The resulting cerium diffusion coating on the nickel base substrate demonstrates improved resistance to oxidation. Cerium coated alloys are particularly useful as components in a solid oxide fuel cell (SOFC).

  13. Control of cerium oxidation state through metal complex secondary structures

    SciTech Connect

    Levin, Jessica R.; Dorfner, Walter L.; Carroll, Patrick J.; Schelter, Eric J.

    2015-08-11

    A series of alkali metal cerium diphenylhydrazido complexes, Mx(py)y[Ce(PhNNPh)4], M = Li, Na, and K, x = 4 (Li and Na) or 5 (K), and y = 4 (Li), 8 (Na), or 7 (K), were synthesized to probe how a secondary coordination sphere would modulate electronic structures at a cerium cation. The resulting electronic structures of the heterobimetallic cerium diphenylhydrazido complexes were found to be strongly dependent on the identity of the alkali metal cations. When M = Li+ or Na+, the cerium(III) starting material was oxidized with concomitant reduction of 1,2-diphenylhydrazine to aniline. Reduction of 1,2-diphenylhydrazine was not observed when M = K+, and the complex remained in the cerium(III) oxidation state. Oxidation of the cerium(III) diphenylhydrazido complex to the Ce(IV) diphenylhydrazido one was achieved through a simple cation exchange reaction of the alkali metals. As a result, UV-Vis spectroscopy, FTIR spectroscopy, electrochemistry, magnetic susceptibility, and DFT studies were used to probe the oxidation state and the electronic changes that occurred at the metal centre.

  14. Control of cerium oxidation state through metal complex secondary structures

    DOE PAGESBeta

    Levin, Jessica R.; Dorfner, Walter L.; Carroll, Patrick J.; Schelter, Eric J.

    2015-08-11

    A series of alkali metal cerium diphenylhydrazido complexes, Mx(py)y[Ce(PhNNPh)4], M = Li, Na, and K, x = 4 (Li and Na) or 5 (K), and y = 4 (Li), 8 (Na), or 7 (K), were synthesized to probe how a secondary coordination sphere would modulate electronic structures at a cerium cation. The resulting electronic structures of the heterobimetallic cerium diphenylhydrazido complexes were found to be strongly dependent on the identity of the alkali metal cations. When M = Li+ or Na+, the cerium(III) starting material was oxidized with concomitant reduction of 1,2-diphenylhydrazine to aniline. Reduction of 1,2-diphenylhydrazine was not observedmore » when M = K+, and the complex remained in the cerium(III) oxidation state. Oxidation of the cerium(III) diphenylhydrazido complex to the Ce(IV) diphenylhydrazido one was achieved through a simple cation exchange reaction of the alkali metals. As a result, UV-Vis spectroscopy, FTIR spectroscopy, electrochemistry, magnetic susceptibility, and DFT studies were used to probe the oxidation state and the electronic changes that occurred at the metal centre.« less

  15. FUN3D Manual: 12.6

    NASA Technical Reports Server (NTRS)

    Biedron, Robert T.; Derlaga, Joseph M.; Gnoffo, Peter A.; Hammond, Dana P.; Jones, William T.; Kleb, William L.; Lee-Rausch, Elizabeth M.; Nielsen, Eric J.; Park, Michael A.; Rumsey, Christopher L.; Thomas, James L.; Wood, William A.

    2015-01-01

    This manual describes the installation and execution of FUN3D version 12.6, including optional dependent packages. FUN3D is a suite of computational fluid dynamics simulation and design tools that uses mixed-element unstructured grids in a large number of formats, including structured multiblock and overset grid systems. A discretely-exact adjoint solver enables efficient gradient-based design and grid adaptation to reduce estimated discretization error. FUN3D is available with and without a reacting, real-gas capability. This generic gas option is available only for those persons that qualify for its beta release status.

  16. The potential toxic effects of cerium on organism: cerium prolonged the developmental time and induced the expression of Hsp70 and apoptosis in Drosophila melanogaster.

    PubMed

    Wu, Bin; Zhang, Di; Wang, Dan; Qi, Chunyan; Li, Zongyun

    2012-10-01

    Due to the widespread application of cerium, a rare earth element, the risk of exposure to cerium has increased. Therefore, understanding the physiological effects of cerium is of great importance. Our previous work showed that cerium caused significant lifespan shortening accompanied by oxidative damage in Drosophila melanogaster, however, little is known about the detailed mechanism of cerium-induced cytotoxicity. Thus, we examined the developmental time during metamorphosis, and assessed the toxic effects of cerium by evaluating heat shock protein 70 (Hsp70), DNA damage markers and apoptosis in D. melanogaster. We found that cerium extended the developmental time of D. melanogaster and up-regulated the expression of Hsp70 when the concentration of cerium was increased (especially concentrations over 26.3 μg/g). Up-regulation of the cell cycle checkpoint p53 and cell signaling protein p38 were also observed when the concentration of cerium was over 104 μg/g. In addition, the activities of caspase-3 and caspase-9, markers of apoptosis, were significantly higher when the larvae were exposed to ceric sulfate. These results suggest that high concentrations of cerium may result in DNA damage and ultimately apoptosis in D. melanogaster, and strongly indicate that cerium should be applied with caution and the potential toxic effects in humans should also be taken into consideration. PMID:22707041

  17. UV laser induced photochromic centers in cerium doped calcium fluoride

    SciTech Connect

    Pogatshnik, G.J.; Hamilton, D.S.

    1987-01-01

    The optical excitation of the lowest 4f to 5d transition in Ce/sup 3 +/:CaF/sub 2/ by the 308 mm output of a Xe-Cl excimer laser results in strong coloration. The centers created were found to be divalent cerium ions at cubic sites. The system exhibits photochromic properties; the crystal can be returned to the original transparent state by illuminating it with light which is absorbed by the divalent cerium ions. The creation process for these photochromic centers involves a resonant two-photon transition from the 4f ground state of the cerium ion to the conduction band of the CaF/sub 2/ host. The lowest 5d level of the cerium ion serves as the real intermediate state for this transition. The photoionized electron can be trapped by another trivalent cerium ion at a site of cubic symmetry. These impurity sites with O/sub h/ symmetry result when the charge compensator associated with the rare earth ion is somewhat removed from the cerium ion site. The charge compensator is needed to maintain charge neutrality in the crystal when a trivalent rare earth is substituted for a Ca ion in the host lattice. The absence of a local charge compensator at a Ce/sup 3 +/ site with O/sub h/ symmetry, provides a net positive Coulombic potential, which aids in the trapping of electrons from the conduction band. The capture of an electron by a cerium ion at cubic site, changes the valence state of the ion to Ce/sup 2 +/ which accounts for the coloration of the crystal after illumination with uv laser light. A model for the production of the photochromic centers is presented.

  18. On the system cerium-platinum-silicon

    SciTech Connect

    Gribanov, Alexander Grytsiv, Andriy; Royanian, Esmaeil; Rogl, Peter; Bauer, Ernst; Giester, Gerald; Seropegin, Yurii

    2008-11-15

    Phase relations in the ternary system Ce-Pt-Si have been established for the isothermal section at 800 deg. C based on X-ray powder diffraction, metallography, scanning electron microscopy (SEM) and electron probe microanalysis (EPMA) techniques on about 120 alloys, which were prepared by various methods employing arc-melting under argon or powder reaction sintering. Nineteen ternary compounds were observed. Atom order in the crystal structures of {tau}{sub 18}-Ce{sub 5}(Pt,Si){sub 4} (Pnma; a=0.77223(3) nm, b=1.53279(8) nm c=0.80054(5) nm), {tau}{sub 3}-Ce{sub 2}Pt{sub 7}Si{sub 4} (Pnma; a=1.96335(8) nm, b=0.40361(4) nm, c=1.12240(6) nm) and {tau}{sub 10}-CePtSi{sub 2} (Cmcm; a=0.42943(2) nm, b=1.67357(5) nm, c=0.42372(2) nm) was determined by direct methods from X-ray single-crystal CCD data and found to be isotypic with the Sm{sub 5}Ge{sub 4}-type, the Ce{sub 2}Pt{sub 7}Ge{sub 4}-type and the CeNiSi{sub 2}-type, respectively. Rietveld refinements established the atom arrangement in the structures of Pt{sub 3}Si (Pt{sub 3}Ge-type, C2/m, a=0.7724(2) nm, b=0.7767(2) nm, c=0.5390(2) nm, {beta}=133.86(2){sup o}), {tau}{sub 16}-Ce{sub 3}Pt{sub 5}Si (Ce{sub 3}Pd{sub 5}Si-type, Imma, a=0.74025(8) nm, b=1.2951(2) nm, c=0.7508(1) nm) and {tau}{sub 17}-Ce{sub 3}PtSi{sub 3} (Ba{sub 3}Al{sub 2}Ge{sub 2}-type, Immm, a=0.41065(5) nm, b=0.43221(5) nm, c=1.8375(3) nm). Phase equilibria in Ce-Pt-Si are characterised by the absence of cerium solubility in platinum silicides. Cerium silicides and cerium platinides, however, dissolve significant amounts of the third component, whereby random substitution of the almost equally sized atom species platinum and silicon is reflected in extended homogeneous regions at constant Ce content such as for {tau}{sub 13}-Ce(Pt{sub x}Si{sub 1-x}){sub 2}, {tau}{sub 6}-Ce{sub 2}Pt{sub 3+x}Si{sub 5-x} or {tau}{sub 7}-CePt{sub 2-x}Si{sub 2+x}. - Graphical abstract: Phase relations in the ternary system Ce-Pt-Si have been established for the isothermal

  19. IRIS TOXICOLOGICAL REVIEW AND SUMMARY DOCUMENTS FOR CERIUM OXIDE (STABLE) AND COMPOUNDS

    EPA Science Inventory

    Cerium is a member of the lanthanoid series of rare earth metals. It is also the most abundant and most reactive of the rare earth metals. Cerium oxidizes at room temperature and forms a variety of salt compounds including oxides, hydroxides, sulfates and chlorides. Cerium is ...

  20. Potential for recovery of cerium contained in automotive catalytic converters

    USGS Publications Warehouse

    Bleiwas, Donald I.

    2013-01-01

    Catalytic converters (CATCONs) are required by Federal law to be installed in nearly all gasoline- and diesel-fueled onroad vehicles used in the United States. About 85 percent of the light-duty vehicles and trucks manufactured worldwide are equipped with CATCONs. Portions of the CATCONs (called monoliths) are recycled for their platinum-group metal (PGM) content and for the value of the stainless steel they contain. The cerium contained in the monoliths, however, is disposed of along with the slag produced from the recycling process. Although there is some smelter capacity in the United States to treat the monoliths in order to recover the PGMs, a great percentage of monoliths is exported to Europe and South Africa for recycling, and a lesser amount is exported to Japan. There is presently no commercial-scale capacity in place domestically to recover cerium from the monoliths. Recycling of cerium or cerium compounds from the monoliths could help ensure against possible global supply shortages by increasing the amount that is available in the supply chain as well as the number and geographic distribution of the suppliers. It could also reduce the amount of material that goes into landfills. Also, the additional supply could lower the price of the commodity. This report analyzes how much cerium oxide is contained in CATCONs and how much could be recovered from used CATCONs.

  1. Mechanical and Thermophysical Properties of Cerium Monopnictides

    NASA Astrophysics Data System (ADS)

    Bhalla, Vyoma; Singh, Devraj; Jain, S. K.

    2016-03-01

    The ultrasonic attenuation due to phonon-phonon interaction, thermoelastic relaxation and dislocation damping mechanisms has been investigated in cerium monopnictides CeX (X: N, P, As, Sb and Bi) for longitudinal and shear waves along {< }100{rangle }, {< }110{rangle } and {< }111{rangle } directions. The second- and third-order elastic constants of CeX have also been computed in the temperature range 0 K to 500 K using Coulomb and Born-Mayer potential upto second nearest neighbours. The computed values of these elastic constants have been applied to find out Young's moduli, bulk moduli, Breazeale's non-linearity parameters, Zener anisotropy, ultrasonic velocity, ultrasonic Grüneisen parameter, thermal relaxation time, acoustic coupling constants and ultrasonic attenuation. The fracture/toughness ratio is less than 1.75, which shows that the chosen materials are brittle in nature as found for other monopnictides. The drag coefficient acting on the motion of screw and edge dislocations due to shear and compressional phonon viscosities of the lattice have also been evaluated for both the longitudinal and shear waves. The thermoelastic loss and dislocation damping loss are negligible in comparison to loss due to Akhieser damping (phonon-phonon interaction). The obtained results for CeX are in qualitative agreement with other semi-metallic monopnictides.

  2. Potentiometric analysis using solutions of cerium sulfates

    SciTech Connect

    Pugin., G.V.; Pisarevskii, A.M.; Polozova, I.P.; Shults, M.M.

    1986-06-01

    In a previous work the authors outlined the bases of a new method of instrumental determination of the chemical oxygen consumption (COC): The analysis is performed within the framework of the umpire analysis of COC, but the consumption of the oxidizing agent is continuously recorded according to the change in the emf of the galvanic cell (glass pH-metric electrode; cerium (IV,III) sulfates, potassium bichromate, 7.5 M H/sub 2/SO/sub 4/; and glass redoximetric electrode EO-021. The authors contend that potentiometric recording permits not only a simplication of the determination of COC but also the removal of the rigid limitations on the time of boiling of the sample. Additional information may be obtained on the corresponding and difficultly oxidized substances in the sample to be analyzed. It is noted after a discussion of main peculiarities of the cell that the selection of the conditions of analysis is dictated largely by the requirements set in the determinations of COC which permits a number of shortcomings of the potentiometric method to be determined.

  3. Characterization of cerium fluoride nanocomposite scintillators

    SciTech Connect

    Stange, Sy; Esch, Ernst I; Brown, Leif O; Couture, Aaron J; Mckigney, Edward A; Muenchausen, Ross E; Del Sesto, Rico E; Gilbertson, Robert D; Mccleskey, T Mark; Reifarth, Rene

    2009-01-01

    Measurement of the neutron capture cross-sections of a number of short-lived isotopes would advance both pure and applied scientific research. These cross-sections are needed for calculation of criticality and waste production estimates for the Advanced Fuel Cycle Initiative, for analysis of data from nuclear weapons tests, and to improve understanding of nucleosynthesis. However, measurement of these cross-sections would require a detector with a faster signal decay time than those used in existing neutron capture experiments. Crystals of faster detector materials are not available in sufficient sizes and quantities to supply these large-scale experiments. Instead, we propose to use nanocomposite detectors, consisting of nanoscale particles of a scintillating material dispersed in a matrix material. We have successfully fabricated cerium fluoride (CeF{sub 3}) nanoparticles and dispersed them in a liquid matrix. We have characterized this scintillator and have measured its response to neutron capture. Results of the optical, structural, and radiation characterization will be presented.

  4. Environmental geochemistry of cerium: applications and toxicology of cerium oxide nanoparticles.

    PubMed

    Dahle, Jessica T; Arai, Yuji

    2015-02-01

    Cerium is the most abundant of rare-earth metals found in the Earth's crust. Several Ce-carbonate, -phosphate, -silicate, and -(hydr)oxide minerals have been historically mined and processed for pharmaceutical uses and industrial applications. Of all Ce minerals, cerium dioxide has received much attention in the global nanotechnology market due to their useful applications for catalysts, fuel cells, and fuel additives. A recent mass flow modeling study predicted that a major source of CeO2 nanoparticles from industrial processing plants (e.g., electronics and optics manufactures) is likely to reach the terrestrial environment such as landfills and soils. The environmental fate of CeO2 nanoparticles is highly dependent on its physcochemical properties in low temperature geochemical environment. Though there are needs in improving the analytical method in detecting/quantifying CeO2 nanoparticles in different environmental media, it is clear that aquatic and terrestrial organisms have been exposed to CeO2 NPs, potentially yielding in negative impact on human and ecosystem health. Interestingly, there has been contradicting reports about the toxicological effects of CeO2 nanoparticles, acting as either an antioxidant or reactive oxygen species production-inducing agent). This poses a challenge in future regulations for the CeO2 nanoparticle application and the risk assessment in the environment. PMID:25625406

  5. Environmental Geochemistry of Cerium: Applications and Toxicology of Cerium Oxide Nanoparticles

    PubMed Central

    Dahle, Jessica T.; Arai, Yuji

    2015-01-01

    Cerium is the most abundant of rare-earth metals found in the Earth’s crust. Several Ce-carbonate, -phosphate, -silicate, and -(hydr)oxide minerals have been historically mined and processed for pharmaceutical uses and industrial applications. Of all Ce minerals, cerium dioxide has received much attention in the global nanotechnology market due to their useful applications for catalysts, fuel cells, and fuel additives. A recent mass flow modeling study predicted that a major source of CeO2 nanoparticles from industrial processing plants (e.g., electronics and optics manufactures) is likely to reach the terrestrial environment such as landfills and soils. The environmental fate of CeO2 nanoparticles is highly dependent on its physcochemical properties in low temperature geochemical environment. Though there are needs in improving the analytical method in detecting/quantifying CeO2 nanoparticles in different environmental media, it is clear that aquatic and terrestrial organisms have been exposed to CeO2 NPs, potentially yielding in negative impact on human and ecosystem health. Interestingly, there has been contradicting reports about the toxicological effects of CeO2 nanoparticles, acting as either an antioxidant or reactive oxygen species production-inducing agent). This poses a challenge in future regulations for the CeO2 nanoparticle application and the risk assessment in the environment. PMID:25625406

  6. Elaboration and characterization of thin solid films containing cerium

    NASA Astrophysics Data System (ADS)

    Hamdi, S.; Guerfi, S.; Siab, R.

    2009-11-01

    Cerium oxide films are widely studied as a promising alternative to Cr(VI) based pre-treatments for the corrosion protection of different metals and alloys. Cathodic electrodeposition of Cerium containing thin films was realised on TA6V substrates from a Ce(NO3)3, 6H2O and mixed water-ethyl alcohol solutions at 0.01 M. Experimental conditions to obtain homogeneous and crack free thin films were determined. The deposited cerium quantity appears proportional to the quantity of electricity used, as indicated by the Faraday law. Subsequent thermal treatment lead to a CeO2 coating, expected to provide an increase of TA6V oxidation resistance at high temperatures. The deposits were characterized by differential scanning calorimetry (DSC), optical and scanning electron microscopies.

  7. Dehydrogenation of isopropanol on a cerium-nickel catalyst

    NASA Astrophysics Data System (ADS)

    Platonov, E. A.; Naumkin, A. V.; Maslakov, K. I.; Yagodovskii, V. D.

    2012-12-01

    The effect of a cerium additive on the catalytic activity of a 2 wt % Ni/SiO2 catalyst is studied. It found that under both flow and static conditions the activity of (2 wt % Ni + 0.2 wt % Ce)/SiO2 catalyst is higher than that of the original sample; the increase in activity results from a sharp increase in the number of active sites. A change in the composition of the surface layer of the catalysts is analyzed by X-ray photoelectron spectroscopy. It was found that the fraction of nickel decreases and the fraction of carbon increases in cerium-containing catalyst. An explanation of the change in the elemental composition of the catalytic active sites of a nickel catalyst in the presence of cerium is proposed on the basis of XPS data and previous quantum chemical calculations.

  8. Determination of different valence forms of cerium in glasses using potentiometric titration

    SciTech Connect

    Chesnokova, S.M.; Danilova, I.Yu.; Andreev, P.A.

    1987-09-01

    This paper describes a potentiometric method for the quantitative determination of two cerium oxide forms--cerium dioxide and dicerium trioxide--in glasses where the oxides form a major constituent. The method uses hydroquinone as a reducing agent. Cerium valences are also determined. The sensitivity of the method is tested by analyzing known synthetic mixtures simulating the composition of the glasses. The method has been used to determine the total concentration of cerium and to monitor the redox regime in glass melting furnaces during the melting of cerium-containing glasses.

  9. Synthesis and characterization of magnesium doped cerium oxide for the fuel cell application

    NASA Astrophysics Data System (ADS)

    Kumar, Amit; Kumari, Monika; Kumar, Mintu; Kumar, Sacheen; Kumar, Dinesh

    2016-05-01

    Cerium oxide has attained much attentions in global nanotechnology market due to valuable application for catalytic, fuel additive, and widely as electrolyte in solid oxide fuel cell. Doped cerium oxide has large oxygen vacancies that allow for greater reactivity and faster ion transport. These properties make cerium oxide suitable material for SOFCs application. Cerium oxide electrolyte requires lower operation temperature which shows improvement in processing and the fabrication technique. In our work, we synthesized magnesium doped cerium oxide by the co-precipitation method. With the magnesium doping catalytic reactivity of CeO2 was increased. Synthesized nanoparticle were characterized by the XRD and UV absorption techniques.

  10. In situ growth of epitaxial cerium tungstate (100) thin films.

    PubMed

    Skála, Tomáš; Tsud, Nataliya; Orti, Miguel Ángel Niño; Menteş, Tevfik Onur; Locatelli, Andrea; Prince, Kevin Charles; Matolín, Vladimír

    2011-04-21

    The deposition of ceria on a preoxidized W(110) crystal at 870 K has been studied in situ by photoelectron spectroscopy and low-energy electron diffraction. Formation of an epitaxial layer of crystalline cerium tungstate Ce(6)WO(12)(100), with the metals in the Ce(3+) and W(6+) chemical states, has been observed. The interface between the tungsten substrate and the tungstate film consists of WO suboxide. At thicknesses above 0.89 nm, cerium dioxide grows on the surface of Ce(6)WO(12), favoured by the limited diffusion of tungsten from the substrate. PMID:21399780

  11. The effective thermal conductivity of an adsorbent - Praseodymium cerium oxide

    NASA Technical Reports Server (NTRS)

    Secary, J. J.; Tong, T. W.

    1992-01-01

    The results of an experimental study to determine the effective thermal conductivity of praseodymium cerium oxide are reported. Praseodymium cerium oxide is an adsorbent used in the development of adsorption compressors for spaceborne refrigeration systems. A guarded-hot-plate apparatus was built for this study. Measurements were carried out for mean temperatures ranging from 300 to 600 C under a vacuum of 10 exp -5 torr. For the temperature range studied, the effective thermal conductivity increased from 0.14 to 0.76 W/m per C with increasing temperature, while displaying a cubic temperature dependency.

  12. Optical and electrical studies of cerium mixed oxides

    SciTech Connect

    Sherly, T. R.; Raveendran, R.

    2014-10-15

    The fast development in nanotechnology makes enthusiastic interest in developing nanomaterials having tailor made properties. Cerium mixed oxide materials have received great attention due to their UV absorption property, high reactivity, stability at high temperature, good electrical property etc and these materials find wide applications in solid oxide fuel cells, solar control films, cosmetics, display units, gas sensors etc. In this study cerium mixed oxide compounds were prepared by co-precipitation method. All the samples were doped with Zn (II) and Fe (II). Preliminary characterizations such as XRD, SEM / EDS, TEM were done. UV - Vis, Diffuse reflectance, PL, FT-IR, Raman and ac conductivity studies of the samples were performed.

  13. Optical and electrical studies of cerium mixed oxides

    NASA Astrophysics Data System (ADS)

    Sherly, T. R.; Raveendran, R.

    2014-10-01

    The fast development in nanotechnology makes enthusiastic interest in developing nanomaterials having tailor made properties. Cerium mixed oxide materials have received great attention due to their UV absorption property, high reactivity, stability at high temperature, good electrical property etc and these materials find wide applications in solid oxide fuel cells, solar control films, cosmetics, display units, gas sensors etc. In this study cerium mixed oxide compounds were prepared by co-precipitation method. All the samples were doped with Zn (II) and Fe (II). Preliminary characterizations such as XRD, SEM / EDS, TEM were done. UV - Vis, Diffuse reflectance, PL, FT-IR, Raman and ac conductivity studies of the samples were performed.

  14. Cerium Oxyhydroxide Clusters: Formation, Structure and Reactivity

    SciTech Connect

    Aubriet, F.; Gaumet, Jean-Jacques; De Jong, Wibe A.; Groenewold, G. S.; Gianotto, Anita K.; McIIwain, Michael E.; Van Stipdonk, Michael J.; Leavitt, Christopher M.

    2009-05-11

    Cerium oxyhydroxide cluster anions were produced by irradiating ceric oxide particles using 355 nm laser pulses that were synchronized with pulses of nitrogen gas admitted to the irradiation chamber. The gas pulse stabilized the nascent clusters that are largely anhydrous [CexOy] ions and neutrals. These initially-formed species react with water, principally forming closed-shell (c-s) oxohydroxy species that are described by the general formula [CexOy(OH)z]-. In general, the extent of hydroxylation varies from a value of 3 OH per Ce atom when x = 1 to a value slightly greater than 1 for x > 8. The Ce3 and Ce6 species deviate significantly from this trend: the x = 3 cluster accommodates more hydroxyl moieties compared to neighboring congeners at x = 2 and x = 4. Conversely, the x = 6 cluster is significantly less hydroxylated. Density functional theory (DFT) modeling of the cluster structures show that the hydrated clusters are hydrolyzed, and contain one-to-multiple hydroxide moieties, but not datively bound water. DFT also predicts an energetic preference for formation of highly symmetric structures as the size of the clusters increases. The calculated structures indicate that the ability of the Ce3 oxyhydroxide to accommodate more extensive hydroxylation is due to a more open, hexagonal structure in which the Ce atoms can participate in multiple hydrolysis reactions. Conversely the Ce6 oxyhydroxide has an octahedral structure that is not conducive to hydrolysis. In addition to the c-s clusters, open-shell (o-s) oxyhydroxides and superoxides are also formed, and they become more prominent as the size of the clusters increases, suggesting that the larger ceria clusters have an increased ability to stabilize a non-bonding electron. The overall intensity of the clusters tends to monotonically decrease as the cluster size increases, however this trend is interrupted at Ce13, which is significantly more stable compared to neighboring congeners, suggesting formation of

  15. Cerium Oxyhydroxide Clusters: Formation, Structure and Reactivity

    SciTech Connect

    Frederic Aubriet; Jean-Jacques Gaumet; Wibe A de Jong; Groenewold, Gary S; Gianotto, Anita K; McIlwain, Michael E; Michael J. Van Stipdonk; Christopher M. Leavitt

    2009-06-01

    Cerium oxyhydroxide cluster anions were produced by irradiating ceric oxide particles using 355 nm laser pulses that were synchronized with pulses of nitrogen gas admitted to the irradiation chamber. The gas pulse stabilized the nascent clusters that are largely anhydrous [CexOy] ions and neutrals. These initially-formed species react with water, principally forming closed-shell (c-s) oxohydroxy species that are described by the general formula [CexOy(OH)z]-. In general, the extent of hydroxylation varies from a value of 3 OH per Ce atom when x = 1 to a value slightly greater than 1 for x > 8. The Ce3 and Ce6 species deviate significantly from this trend: the x = 3 cluster accommodates more hydroxyl moieties compared to neighboring congeners at x = 2 and x = 4. Conversely, the x = 6 cluster is significantly less hydroxylated. Density functional theory (DFT) modeling of the cluster structures show that the hydrated clusters are hydrolyzed, and contain one-to-multiple hydroxide moieties, but not datively bound water. DFT also predicts an energetic preference for formation of highly symmetric structures as the size of the clusters increases. The calculated structures indicate that the ability of the Ce3 oxyhydroxide to accommodate more extensive hydroxylation is due to a more open, hexagonal structure in which the Ce atoms can participate in multiple hydrolysis reactions. Conversely the Ce6 oxyhydroxide has an octahedral structure that is not conducive to hydrolysis. In addition to the c-s clusters, open-shell (o-s) oxyhydroxides and superoxides are also formed, and they become more prominent as the size of the clusters increases, suggesting that the larger ceria clusters have an increased ability to stabilize a non-bonding electron. The overall intensity of the clusters tends to monotonically decrease as the cluster size increases, however this trend is interrupted at Ce13, which is significantly more stable compared to neighboring congeners, suggesting formation of

  16. Properties of Cerium Containing Lead Free Solder

    NASA Astrophysics Data System (ADS)

    Xie, Huxiao

    With increasing concerns of the intrinsic toxicity of lead (Pb) in electronics, a series of tin (Sn) based alloys involving silver (Ag) and copper (Cu) have been proposed as replacements for Pb-Sn solder and widely accepted by industry. However, they have a higher melting point and often exhibit poorer damage tolerance than Pb-Sn alloys. Recently, a new class of alloys with trace amount of rare-earth (RE) elements has been discovered and investigated. In previous work from Prof. Chawla's group, it has been shown that cerium (Ce)-based Pb-free solder are less prone to oxidation and Sn whiskering, and exhibit desirable attributes of microstructural refinement and enhanced ductility relative to lanthanum (La)-based Sn-3.9Ag-0.7Cu (SAC) alloy. Although the formation of RESn3 was believed to be directly responsible for the enhanced ductility in RE-containing SAC solder by allowing microscopic voids to nucleate throughout the solder volume, this cavitation-based mechanism needs to be validated experimentally and numerically. Additionally, since the previous study has exhibited the realistic feasibility of Ce-based SAC lead-free solder alloy as a replacement to conventional SAC alloys, in this study, the proposed objective focuses on the in in-depth understanding of mechanism of enhanced ductility in Ce-based SAC alloy and possible issues associated with integration of this new class of solder into electronic industry, including: (a) study of long-term thermal and mechanical stability on industrial metallization, (b) examine the role of solder volume and wetting behavior of the new solder, relative to Sn-3.9Ag-0.7Cu alloys, (c) conduct experiments of new solder alloys in the form of mechanical shock and electromigration. The research of this new class alloys will be conducted in industrially relevant conditions, and the results would serve as the first step toward integration of these new, next generation solders into the industry.

  17. 10 CFR 110.126 - Protection of classified information.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Protection of classified information. 110.126 Section 110... MATERIAL Special Procedures for Classified Information in Hearings § 110.126 Protection of classified information. Nothing in this subpart shall relieve any person from safeguarding classified information...

  18. 10 CFR 110.126 - Protection of classified information.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Protection of classified information. 110.126 Section 110... MATERIAL Special Procedures for Classified Information in Hearings § 110.126 Protection of classified information. Nothing in this subpart shall relieve any person from safeguarding classified information...

  19. 10 CFR 110.126 - Protection of classified information.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 2 2014-01-01 2014-01-01 false Protection of classified information. 110.126 Section 110... MATERIAL Special Procedures for Classified Information in Hearings § 110.126 Protection of classified information. Nothing in this subpart shall relieve any person from safeguarding classified information...

  20. 10 CFR 110.126 - Protection of classified information.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Protection of classified information. 110.126 Section 110... MATERIAL Special Procedures for Classified Information in Hearings § 110.126 Protection of classified information. Nothing in this subpart shall relieve any person from safeguarding classified information...

  1. 10 CFR 110.126 - Protection of classified information.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 2 2013-01-01 2013-01-01 false Protection of classified information. 110.126 Section 110... MATERIAL Special Procedures for Classified Information in Hearings § 110.126 Protection of classified information. Nothing in this subpart shall relieve any person from safeguarding classified information...

  2. 30 CFR 250.126 - Electronic payment instructions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 2 2012-07-01 2012-07-01 false Electronic payment instructions. 250.126 Section 250.126 Mineral Resources BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE... Electronic payment instructions. You must file all payments electronically through Pay.gov. This...

  3. 30 CFR 250.126 - Electronic payment instructions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 2 2013-07-01 2013-07-01 false Electronic payment instructions. 250.126 Section 250.126 Mineral Resources BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE... Electronic payment instructions. You must file all payments electronically through Pay.gov. This...

  4. 30 CFR 250.126 - Electronic payment instructions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 2 2014-07-01 2014-07-01 false Electronic payment instructions. 250.126 Section 250.126 Mineral Resources BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT, DEPARTMENT OF THE... Electronic payment instructions. You must file all payments electronically through Pay.gov. This...

  5. 12 CFR 308.126 - Special supervisory associations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false Special supervisory associations. 308.126... Termination of Insured Status § 308.126 Special supervisory associations. If the Board of Directors finds that a savings association is a special supervisory association under the provisions of section...

  6. 12 CFR 308.126 - Special supervisory associations.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 4 2011-01-01 2011-01-01 false Special supervisory associations. 308.126... Termination of Insured Status § 308.126 Special supervisory associations. If the Board of Directors finds that a savings association is a special supervisory association under the provisions of section...

  7. 27 CFR 41.126 - Termination of bond.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2010-04-01 2010-04-01 false Termination of bond. 41.126 Section 41.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY (CONTINUED) TOBACCO IMPORTATION OF TOBACCO PRODUCTS, CIGARETTE PAPERS AND TUBES, AND PROCESSED TOBACCO Puerto Rican...

  8. 7 CFR 1260.126 - Plans and projects.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 10 2012-01-01 2012-01-01 false Plans and projects. 1260.126 Section 1260.126 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE BEEF PROMOTION AND RESEARCH...

  9. 7 CFR 1260.126 - Plans and projects.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 10 2011-01-01 2011-01-01 false Plans and projects. 1260.126 Section 1260.126 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE BEEF PROMOTION AND RESEARCH...

  10. 7 CFR 1260.126 - Plans and projects.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 10 2014-01-01 2014-01-01 false Plans and projects. 1260.126 Section 1260.126 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE BEEF PROMOTION AND RESEARCH...

  11. 7 CFR 1260.126 - Plans and projects.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 10 2010-01-01 2010-01-01 false Plans and projects. 1260.126 Section 1260.126 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE BEEF PROMOTION AND RESEARCH...

  12. 7 CFR 1260.126 - Plans and projects.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 10 2013-01-01 2013-01-01 false Plans and projects. 1260.126 Section 1260.126 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MISCELLANEOUS COMMODITIES), DEPARTMENT OF AGRICULTURE BEEF PROMOTION AND RESEARCH...

  13. 34 CFR 303.126 - Payor of last resort.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false Payor of last resort. 303.126 Section 303.126 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION EARLY INTERVENTION PROGRAM FOR INFANTS AND TODDLERS...

  14. 21 CFR 146.126 - Frozen concentrate for colored lemonade.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 2 2014-04-01 2014-04-01 false Frozen concentrate for colored lemonade. 146.126... Fruit Juices and Beverages § 146.126 Frozen concentrate for colored lemonade. (a) Frozen concentrate for colored lemonade conforms to the definition and standard of identity prescribed for frozen concentrate...

  15. 21 CFR 146.126 - Frozen concentrate for colored lemonade.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 2 2013-04-01 2013-04-01 false Frozen concentrate for colored lemonade. 146.126... Fruit Juices and Beverages § 146.126 Frozen concentrate for colored lemonade. (a) Frozen concentrate for colored lemonade conforms to the definition and standard of identity prescribed for frozen concentrate...

  16. 21 CFR 146.126 - Frozen concentrate for colored lemonade.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 2 2012-04-01 2012-04-01 false Frozen concentrate for colored lemonade. 146.126... Fruit Juices and Beverages § 146.126 Frozen concentrate for colored lemonade. (a) Frozen concentrate for colored lemonade conforms to the definition and standard of identity prescribed for frozen concentrate...

  17. 21 CFR 146.126 - Frozen concentrate for colored lemonade.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Frozen concentrate for colored lemonade. 146.126... Fruit Juices and Beverages § 146.126 Frozen concentrate for colored lemonade. (a) Frozen concentrate for colored lemonade conforms to the definition and standard of identity prescribed for frozen concentrate...

  18. 21 CFR 146.126 - Frozen concentrate for colored lemonade.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Frozen concentrate for colored lemonade. 146.126... Fruit Juices and Beverages § 146.126 Frozen concentrate for colored lemonade. (a) Frozen concentrate for colored lemonade conforms to the definition and standard of identity prescribed for frozen concentrate...

  19. 10 CFR 72.126 - Criteria for radiological protection.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Criteria for radiological protection. 72.126 Section 72... WASTE General Design Criteria § 72.126 Criteria for radiological protection. (a) Exposure control... radiation exposure. (b) Radiological alarm systems. Radiological alarm systems must be provided...

  20. 21 CFR 145.126 - Artificially sweetened canned cherries.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 2 2013-04-01 2013-04-01 false Artificially sweetened canned cherries. 145.126... § 145.126 Artificially sweetened canned cherries. (a) Artificially sweetened canned cherries is the food which conforms to the definition and standard of identity prescribed for canned cherries by §...

  1. 42 CFR 417.126 - Recordkeeping and reporting requirements.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... HEALTH CARE PREPAYMENT PLANS Qualified Health Maintenance Organizations: Organization and Operation § 417... 42 Public Health 3 2011-10-01 2011-10-01 false Recordkeeping and reporting requirements. 417.126 Section 417.126 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND...

  2. 42 CFR 417.126 - Recordkeeping and reporting requirements.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... HEALTH CARE PREPAYMENT PLANS Qualified Health Maintenance Organizations: Organization and Operation § 417... 42 Public Health 3 2010-10-01 2010-10-01 false Recordkeeping and reporting requirements. 417.126 Section 417.126 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND...

  3. 46 CFR 126.480 - Safety Management Certificate.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... CERTIFICATION Inspection for Certification § 126.480 Safety Management Certificate. (a) All offshore supply vessels of 500 gross tons or over to which 33 CFR part 96 applies, on an international voyage must have a... 46 Shipping 4 2014-10-01 2014-10-01 false Safety Management Certificate. 126.480 Section...

  4. 20 CFR 10.126 - What does the decision contain?

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 1 2011-04-01 2011-04-01 false What does the decision contain? 10.126 Section 10.126 Employees' Benefits OFFICE OF WORKERS' COMPENSATION PROGRAMS, DEPARTMENT OF LABOR FEDERAL EMPLOYEES' COMPENSATION ACT CLAIMS FOR COMPENSATION UNDER THE FEDERAL EMPLOYEES' COMPENSATION ACT,...

  5. 21 CFR 145.126 - Artificially sweetened canned cherries.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 2 2012-04-01 2012-04-01 false Artificially sweetened canned cherries. 145.126... § 145.126 Artificially sweetened canned cherries. (a) Artificially sweetened canned cherries is the food which conforms to the definition and standard of identity prescribed for canned cherries by §...

  6. 15 CFR 923.126 - Pre-application procedures.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Pre-application procedures. 923.126 Section 923.126 Commerce and Foreign Trade Regulations Relating to Commerce and Foreign Trade (Continued) NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE OCEAN AND COASTAL RESOURCE MANAGEMENT COASTAL ZONE MANAGEMENT...

  7. 40 CFR 86.126-90 - Calibration of other equipment.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 19 2012-07-01 2012-07-01 false Calibration of other equipment. 86.126... Complete Heavy-Duty Vehicles; Test Procedures § 86.126-90 Calibration of other equipment. Other test... according to good practice. Specific equipment requiring calibration are the gas chromatograph and...

  8. 40 CFR 86.126-90 - Calibration of other equipment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 18 2010-07-01 2010-07-01 false Calibration of other equipment. 86.126... Complete Heavy-Duty Vehicles; Test Procedures § 86.126-90 Calibration of other equipment. Other test... according to good practice. Specific equipment requiring calibration are the gas chromatograph and...

  9. 40 CFR 86.126-90 - Calibration of other equipment.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 19 2014-07-01 2014-07-01 false Calibration of other equipment. 86.126... Complete Heavy-Duty Vehicles; Test Procedures § 86.126-90 Calibration of other equipment. Other test... according to good practice. Specific equipment requiring calibration are the gas chromatograph and...

  10. 40 CFR 86.126-90 - Calibration of other equipment.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 19 2013-07-01 2013-07-01 false Calibration of other equipment. 86.126... Complete Heavy-Duty Vehicles; Test Procedures § 86.126-90 Calibration of other equipment. Other test... according to good practice. Specific equipment requiring calibration are the gas chromatograph and...

  11. 40 CFR 86.126-90 - Calibration of other equipment.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 18 2011-07-01 2011-07-01 false Calibration of other equipment. 86.126... Complete Heavy-Duty Vehicles; Test Procedures § 86.126-90 Calibration of other equipment. Other test... according to good practice. Specific equipment requiring calibration are the gas chromatograph and...

  12. 40 CFR 426.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 31 2013-07-01 2013-07-01 false Pretreatment standards for new sources. 426.126 Section 426.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS (CONTINUED) GLASS MANUFACTURING POINT SOURCE CATEGORY Incandescent Lamp Envelope Manufacturing Subcategory §...

  13. 40 CFR 426.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 31 2012-07-01 2012-07-01 false Pretreatment standards for new sources. 426.126 Section 426.126 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS (CONTINUED) GLASS MANUFACTURING POINT SOURCE CATEGORY Incandescent Lamp Envelope Manufacturing Subcategory §...

  14. 29 CFR 784.126 - Operation of the fishing vessel.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Operation of the fishing vessel. 784.126 Section 784.126... STANDARDS ACT APPLICABLE TO FISHING AND OPERATIONS ON AQUATIC PRODUCTS Exemptions Provisions Relating to Fishing and Aquatic Products General Character and Scope of the Section 13(a)(5) Exemption §...

  15. 29 CFR 784.126 - Operation of the fishing vessel.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 3 2014-07-01 2014-07-01 false Operation of the fishing vessel. 784.126 Section 784.126... STANDARDS ACT APPLICABLE TO FISHING AND OPERATIONS ON AQUATIC PRODUCTS Exemptions Provisions Relating to Fishing and Aquatic Products General Character and Scope of the Section 13(a)(5) Exemption §...

  16. 29 CFR 784.126 - Operation of the fishing vessel.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 3 2012-07-01 2012-07-01 false Operation of the fishing vessel. 784.126 Section 784.126... STANDARDS ACT APPLICABLE TO FISHING AND OPERATIONS ON AQUATIC PRODUCTS Exemptions Provisions Relating to Fishing and Aquatic Products General Character and Scope of the Section 13(a)(5) Exemption §...

  17. 29 CFR 784.126 - Operation of the fishing vessel.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 3 2013-07-01 2013-07-01 false Operation of the fishing vessel. 784.126 Section 784.126... STANDARDS ACT APPLICABLE TO FISHING AND OPERATIONS ON AQUATIC PRODUCTS Exemptions Provisions Relating to Fishing and Aquatic Products General Character and Scope of the Section 13(a)(5) Exemption §...

  18. 29 CFR 784.126 - Operation of the fishing vessel.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 3 2011-07-01 2011-07-01 false Operation of the fishing vessel. 784.126 Section 784.126... STANDARDS ACT APPLICABLE TO FISHING AND OPERATIONS ON AQUATIC PRODUCTS Exemptions Provisions Relating to Fishing and Aquatic Products General Character and Scope of the Section 13(a)(5) Exemption §...

  19. 29 CFR 780.126 - Contract arrangements for raising poultry.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 3 2011-07-01 2011-07-01 false Contract arrangements for raising poultry. 780.126 Section... General Scope of Agriculture Raising of Livestock, Bees, Fur-Bearing Animals, Or Poultry § 780.126 Contract arrangements for raising poultry. Feed dealers and processors sometimes enter into...

  20. 29 CFR 780.126 - Contract arrangements for raising poultry.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 3 2013-07-01 2013-07-01 false Contract arrangements for raising poultry. 780.126 Section... General Scope of Agriculture Raising of Livestock, Bees, Fur-Bearing Animals, Or Poultry § 780.126 Contract arrangements for raising poultry. Feed dealers and processors sometimes enter into...

  1. 29 CFR 780.126 - Contract arrangements for raising poultry.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 3 2012-07-01 2012-07-01 false Contract arrangements for raising poultry. 780.126 Section... General Scope of Agriculture Raising of Livestock, Bees, Fur-Bearing Animals, Or Poultry § 780.126 Contract arrangements for raising poultry. Feed dealers and processors sometimes enter into...

  2. 29 CFR 780.126 - Contract arrangements for raising poultry.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 3 2014-07-01 2014-07-01 false Contract arrangements for raising poultry. 780.126 Section... General Scope of Agriculture Raising of Livestock, Bees, Fur-Bearing Animals, Or Poultry § 780.126 Contract arrangements for raising poultry. Feed dealers and processors sometimes enter into...

  3. 29 CFR 780.126 - Contract arrangements for raising poultry.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Contract arrangements for raising poultry. 780.126 Section... General Scope of Agriculture Raising of Livestock, Bees, Fur-Bearing Animals, Or Poultry § 780.126 Contract arrangements for raising poultry. Feed dealers and processors sometimes enter into...

  4. 38 CFR 12.6 - Cases of living veterans.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2014-07-01 2014-07-01 false Cases of living veterans. 12.6 Section 12.6 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS DISPOSITION OF VETERAN'S PERSONAL FUNDS AND EFFECTS Disposition of Veteran's Personal Funds and Effects...

  5. 38 CFR 12.6 - Cases of living veterans.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2012-07-01 2012-07-01 false Cases of living veterans. 12.6 Section 12.6 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS DISPOSITION OF VETERAN'S PERSONAL FUNDS AND EFFECTS Disposition of Veteran's Personal Funds and Effects...

  6. 38 CFR 12.6 - Cases of living veterans.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Cases of living veterans. 12.6 Section 12.6 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS DISPOSITION OF VETERAN'S PERSONAL FUNDS AND EFFECTS Disposition of Veteran's Personal Funds and Effects...

  7. 38 CFR 12.6 - Cases of living veterans.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2013-07-01 2013-07-01 false Cases of living veterans. 12.6 Section 12.6 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS DISPOSITION OF VETERAN'S PERSONAL FUNDS AND EFFECTS Disposition of Veteran's Personal Funds and Effects...

  8. 38 CFR 12.6 - Cases of living veterans.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2011-07-01 2011-07-01 false Cases of living veterans. 12.6 Section 12.6 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS DISPOSITION OF VETERAN'S PERSONAL FUNDS AND EFFECTS Disposition of Veteran's Personal Funds and Effects...

  9. 38 CFR 21.126 - Farm cooperative course.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Farm cooperative course. 21.126 Section 21.126 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS (CONTINUED) VOCATIONAL REHABILITATION AND EDUCATION Vocational Rehabilitation and Employment Under 38 U.S.C. Chapter 31 Educational and Vocational...

  10. 20 CFR 10.126 - What does the decision contain?

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 20 Employees' Benefits 1 2012-04-01 2012-04-01 false What does the decision contain? 10.126 Section 10.126 Employees' Benefits OFFICE OF WORKERS' COMPENSATION PROGRAMS, DEPARTMENT OF LABOR FEDERAL... does the decision contain? The decision shall contain findings of fact and a statement of reasons....

  11. 20 CFR 10.126 - What does the decision contain?

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 20 Employees' Benefits 1 2013-04-01 2012-04-01 true What does the decision contain? 10.126 Section 10.126 Employees' Benefits OFFICE OF WORKERS' COMPENSATION PROGRAMS, DEPARTMENT OF LABOR FEDERAL... does the decision contain? The decision shall contain findings of fact and a statement of reasons....

  12. 29 CFR 794.126 - Computations for a new business.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 29 Labor 3 2011-07-01 2011-07-01 false Computations for a new business. 794.126 Section 794.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR STATEMENTS... full calendar or fiscal year, the analysis can be made by the methods described in §§ 794.123 and...

  13. 29 CFR 794.126 - Computations for a new business.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 3 2010-07-01 2010-07-01 false Computations for a new business. 794.126 Section 794.126 Labor Regulations Relating to Labor (Continued) WAGE AND HOUR DIVISION, DEPARTMENT OF LABOR STATEMENTS... full calendar or fiscal year, the analysis can be made by the methods described in §§ 794.123 and...

  14. 19 CFR 12.6 - Affidavits required to accompany entry.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 1 2012-04-01 2012-04-01 false Affidavits required to accompany entry. 12.6 Section 12.6 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY... restitution payments of the type referred to in Executive Order No. 11851, dated April 10, 1975 (40 FR...

  15. 19 CFR 12.6 - Affidavits required to accompany entry.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 1 2013-04-01 2013-04-01 false Affidavits required to accompany entry. 12.6 Section 12.6 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY... restitution payments of the type referred to in Executive Order No. 11851, dated April 10, 1975 (40 FR...

  16. 19 CFR 12.6 - Affidavits required to accompany entry.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 19 Customs Duties 1 2014-04-01 2014-04-01 false Affidavits required to accompany entry. 12.6 Section 12.6 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY... restitution payments of the type referred to in Executive Order No. 11851, dated April 10, 1975 (40 FR...

  17. 19 CFR 12.6 - Affidavits required to accompany entry.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 1 2011-04-01 2011-04-01 false Affidavits required to accompany entry. 12.6 Section 12.6 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY... restitution payments of the type referred to in Executive Order No. 11851, dated April 10, 1975 (40 FR...

  18. 50 CFR 648.126 - Scup minimum fish sizes.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 12 2014-10-01 2014-10-01 false Scup minimum fish sizes. 648.126 Section... Scup Fishery § 648.126 Scup minimum fish sizes. (a) Moratorium (commercially) permitted vessels. The... whole fish or any part of a fish found in possession, e.g., fillets. These minimum sizes may be...

  19. 50 CFR 648.126 - Scup minimum fish sizes.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 12 2013-10-01 2013-10-01 false Scup minimum fish sizes. 648.126 Section... Scup Fishery § 648.126 Scup minimum fish sizes. (a) Moratorium (commercially) permitted vessels. The... whole fish or any part of a fish found in possession, e.g., fillets. These minimum sizes may be...

  20. 17 CFR 248.126 - Delivery of opt out notices.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 17 Commodity and Securities Exchanges 4 2014-04-01 2014-04-01 false Delivery of opt out notices. 248.126 Section 248.126 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED) REGULATIONS S-P, S-AM, AND S-ID Regulation S-AM: Limitations on Affiliate Marketing §...

  1. 50 CFR 216.126 - Applications for Letters of Authorization.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 10 2012-10-01 2012-10-01 false Applications for Letters of Authorization. 216.126 Section 216.126 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS Taking...

  2. 21 CFR 145.126 - Artificially sweetened canned cherries.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Artificially sweetened canned cherries. 145.126 Section 145.126 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION CANNED FRUITS Requirements for Specific Standardized Canned...

  3. 21 CFR 145.126 - Artificially sweetened canned cherries.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 2 2014-04-01 2014-04-01 false Artificially sweetened canned cherries. 145.126 Section 145.126 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION CANNED FRUITS Requirements for Specific Standardized Canned...

  4. 21 CFR 145.126 - Artificially sweetened canned cherries.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Artificially sweetened canned cherries. 145.126 Section 145.126 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) FOOD FOR HUMAN CONSUMPTION CANNED FRUITS Requirements for Specific Standardized Canned...

  5. Hydrothermal preparation of fractal dendrites: Cerium carbonate hydroxide and cerium oxide

    SciTech Connect

    Wu Mingzai; Zhang Qihua; Liu Yanmei; Fang Qingqing; Liu Xiansong

    2009-06-03

    The surfactant-assisted hydrothermal route was used to prepare fractal dendrite cerium carbonate hydroxide (CeOHCO{sub 3}) microstructures. After annealing at 600 deg. C for 4 h, the products were transformed to CeO{sub 2}. The crystal structures of the two compounds were determined by X-ray diffraction (XRD). The morphologies and microstructures were characterized by field emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). Room temperature photoluminescence (PL) showed that a strong ultraviolet emission at 336 nm was observed for CeOHCO{sub 3}, and that centered at 415 nm for CeO{sub 2} microstructures. Both of these emission peaks are different from those reported for CeOHCO{sub 3} and CeO{sub 2} with other shapes. In addition, the possible growth mechanism of dendrite CeOHCO{sub 3} microstructures and the role of surfactant polyvinyl pyrrolidone (PVP) were also investigated in this paper.

  6. Electrode electrolyte interlayers containing cerium oxide for electrochemical fuel cells

    DOEpatents

    Borglum, Brian P.; Bessette, Norman F.

    2000-01-01

    An electrochemical cell is made having a porous fuel electrode (16) and a porous air electrode (13), with solid oxide electrolyte (15) therebetween, where the air electrode surface opposing the electrolyte has a separate, attached, dense, continuous layer (14) of a material containing cerium oxide, and where electrolyte (16) contacts the continuous oxide layer (14), without contacting the air electrode (13).

  7. Cerium; Crystal Structure and Position in The Periodic Table

    PubMed Central

    Johansson, Börje; Luo, Wei; Li, Sa; Ahuja, Rajeev

    2014-01-01

    The properties of the cerium metal have intrigued physicists and chemists for many decades. In particular a lot of attention has been directed towards its high pressure behavior, where an isostructural volume collapse (γ phase → α phase) has been observed. Two main models of the electronic aspect of this transformation have been proposed; one where the 4f electron undergoes a change from being localized into an itinerant metallic state, and one where the focus is on the interaction between the 4f electron and the conduction electrons, often referred to as the Kondo volume collapse model. However, over the years it has been repeatedly questioned whether the cerium collapse really is isostructural. Most recently, detailed experiments have been able to remove this worrisome uncertainty. Therefore the isostructural aspect of the α-γ transition has now to be seriously addressed in the theoretical modeling, something which has been very much neglected. A study of this fundamental characteristic of the cerium volume collapse is made in present paper and we show that the localized ⇌ delocalized 4f electron picture provides an adequate description of this unique behavior. This agreement makes it possible to suggest that an appropriate crossroad position for cerium in The Periodic Table. PMID:25227991

  8. (Hydro)peroxide ligands on colloidal cerium oxide nanoparticles.

    PubMed

    Damatov, Delina; Mayer, James M

    2016-08-11

    Anhydrous H2O2 reacts with organic colloidal solutions of ceria nanoparticles to form a stable surface peroxo/hydroperoxo species with the release of oleate capping ligands into solution. A new optical spectroscopic signature was identified for cerium-peroxo/hydroperoxo species in solution and correlated with solid-state IR spectroscopy and chemical reactivity. PMID:27468991

  9. Ce-Cu-Si (Cerium-Copper-Silicon)

    NASA Astrophysics Data System (ADS)

    Materials Science International Team MSIT

    This document is part of Subvolume C2 'Non-Ferrous Metal Systems. Part 2: Selected Copper Systems' of Volume 11 'Ternary Alloy Systems - Phase Diagrams, Crystallographic and Thermodynamic Data critically evaluated by MSIT®' of Landolt-Börnstein - Group IV 'Physical Chemistry'. It provides data of the ternary system Cerium-Copper-Silicon.

  10. Purification of cerium, neodymium and gadolinium for low background experiments

    NASA Astrophysics Data System (ADS)

    Boiko, R. S.; Barabash, A. S.; Belli, P.; Bernabei, R.; Cappella, F.; Cerulli, R.; Danevich, F. A.; Incicchitti, A.; Laubenstein, M.; Mokina, V. M.; Nisi, S.; Poda, D. V.; Polischuk, O. G.; Tretyak, V. I.

    2014-01-01

    Cerium, neodymium and gadolinium contain double beta active isotopes. The most interesting are 150Nd and 160Gd (promising for 0ν2β search), 136Ce (2β+ candidate with one of the highest Q2β). The main problem of compounds containing lanthanide elements is their high radioactive contamination by uranium, radium, actinium and thorium. The new generation 2β experiments require development of methods for a deep purification of lanthanides from the radioactive elements. A combination of physical and chemical methods was applied to purify cerium, neodymium and gadolinium. Liquid-liquid extraction technique was used to remove traces of Th and U from neodymium, gadolinium and for purification of cerium from Th, U, Ra and K. Co-precipitation and recrystallization methods were utilized for further reduction of the impurities. The radioactive contamination of the samples before and after the purification was tested by using ultra-low-background HPGe gamma spectrometry. As a result of the purification procedure the radioactive contamination of gadolinium oxide (a similar purification efficiency was reached also with cerium and neodymium oxides) was decreased from 0.12 Bq/kg to 0.007 Bq/kg in 228Th, from 0.04 Bq/kg to <0.006 Bq/kg in 226Ra, and from 0.9 Bq/kg to 0.04 Bq/kg in 40K. The purification methods are much less efficient for chemically very similar radioactive elements like actinium, lanthanum and lutetium.

  11. Cerium as a surrogate in the plutonium immobilization waste form

    NASA Astrophysics Data System (ADS)

    Marra, James Christopher

    In the aftermath of the Cold War, approximately 50 tonnes (MT) of weapons useable plutonium (Pu) has been identified as excess. The U.S. Department of Energy (DOE) has decided that at least a portion of this material will be immobilized in a titanate-based ceramic for final disposal in a geologic repository. The baseline formulation was designed to produce a ceramic consisting primarily of a highly substituted pyrochlore with minor amounts of brannerite and hafnia-substituted rutile. Since development studies with actual actinide materials is difficult, surrogates have been used to facilitate testing. Cerium has routinely been used as an actinide surrogate in actinide chemistry and processing studies. Although cerium appeared as an adequate physical surrogate for powder handling and general processing studies, cerium was found to act significantly different from a chemical perspective in the Pu ceramic form. The reduction of cerium at elevated temperatures caused different reaction paths toward densification of the respective forms resulting in different phase assemblages and microstructural features. Single-phase fabrication studies and cerium oxidation state analyses were performed to further quantify these behavioral differences. These studies indicated that the major phases in the final phase assemblages contained point defects likely leading to their stability. Additionally, thermochemical arguments predicted that the predominant pyrochlore phase in the ceramic was metastable. The apparent metastabilty associated with primary phase in the Pu ceramic form indicated that additional studies must be performed to evaluate the thermodynamic properties of these compounds. Moreover, the metastability of this predominant phase must be considered in assessment of long-term behavior (e.g. radiation stability) of this ceramic.

  12. miR-126: A novel regulator in colon cancer

    PubMed Central

    HUANG, WEINA; LIN, JIE; ZHANG, HONGXUAN

    2016-01-01

    Colon cancer is one of the most common, lethal diseases worldwide. Tumor metastasis and chemotherapy resistance are the main reasons for its poor prognosis and high fatality rate. Tumor development is thought of as one of the most complex cellular events as it is a multi-step cascading process involving infinite proliferation, invasion and immigration. Recently, increasing studies have demonstrated that microRNA-126 (miR-126) has an important role in colon cancer. The expression of miR-126 decreased significantly in colon cancer, particularly in highly metastatic cell lines. miR-126 controls tumor cell growth, metastasis and survival via inactivation of the oncogene signaling pathway, indicating that miR-126 may serve as a therapeutic target for anticancer therapy. Potentially, miR-126 was also reported to be an ideal molecular target as a novel biomarker for liver metastasis from colorectal cancer due to its changeable expression level. In the present review, the current knowledge regarding regulatory function of miR-126 is summarized along with its underlying mechanisms in colon cancer. PMID:26893826

  13. [Determination of silver and cerium in the liver and the kidney from a severely burned infant treated with silver sulfadiazine and cerium nitrate].

    PubMed

    Hirakawa, K

    1983-02-01

    Silver and cerium in the liver and the kidney from severely burned infant were analyzed by neutron activation method. The patient was treated topically with cerium nitrate/silver sulfadiazine cream and cerium nitrate solution for 3 months. Then, the treatment with these drugs was stopped because of abdominal distention. The patient died 1 month after the cessation of the treatment with these drugs. The tissue specimens, blank liver sample and reference standards were irradiated with TRIGA MARK II Reactor of Rikkyo University. About 1 month after the irradiation, the activities were measured with a Ge(Li) detector coupled to a 4096 channel pulse height analyzer. A large amount of silver was detected both in the liver and in the kidney and a trace of cerium only in the liver. A considerable amount of silver was detected in the liver and its quantity was about 1600 times more than that of normal livers reported by Hamilton, Minski and Cleary (1972-73). Neither silver nor cerium were detected in the blank liver. These results suggest that prolonged topical chemotherapy of cerium nitrate/silver sulfadiazine cream and cerium nitrate solution for the extensive burn injuries causes considerable absorption of silver and cerium into the liver and the kidney. PMID:6867381

  14. Fundamental aspects of regenerative cerium oxide nanoparticles and their applications in nanobiotechnology

    NASA Astrophysics Data System (ADS)

    Patil, Swanand D.

    Cerium oxide has been used extensively for various applications over the past two decades. The use of cerium oxide nanoparticles is beneficial in present applications and can open avenues for future applications. The present study utilizes the microemulsion technique to synthesize uniformly distributed cerium oxide nanoparticles. The same technique was also used to synthesize cerium oxide nanoparticles doped with trivalent elements (La and Nd). The fundamental study of cerium oxide nanoparticles identified variations in properties as a function of particle size and also due to doping with trivalent elements (La and Nd). It was found that the lattice parameter of cerium oxide nanoparticles increases with decrease in particle size. Also Raman allowed mode shift to lower energies and the peak at 464 cm-1 becomes broader and asymmetric. The size dependent changes in cerium oxide were correlated to increase in oxygen vacancy concentration in the cerium oxide lattice. The doping of cerium oxide nanoparticles with trivalent elements introduces more oxygen vacancies and expands the cerium oxide lattice further (in addition to the lattice expansion due to the size effect). The lattice expansion is greater for La-doped cerium oxide nanoparticles compared to Nd-doping due to the larger ionic radius of La compared to Nd, the lattice expansion is directly proportional to the dopant concentration. The synthesized cerium oxide nanoparticles were used to develop an electrochemical biosensor of hydrogen peroxide (H2O2). The sensor was useful to detect H2O2 concentrations as low as 1muM in water. Also the preliminary testing of the sensor on tomato stem and leaf extracts indicated that the sensor can be used in practical applications such as plant physiological studies etc. The nanomolar concentrations of cerium oxide nanoparticles were also found to be useful in decreasing ROS (reactive oxygen species) mediated cellular damages in various in vitro cell cultures. Cerium oxide

  15. FIRST FLOOR, Looking east into Room 126 showing the equipment ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    FIRST FLOOR, Looking east into Room 126 showing the equipment on the east wall - Department of Energy, Mound Facility, Hydrolysis House Building (HH Building), One Mound Road, Miamisburg, Montgomery County, OH

  16. Perspective view of gas station, 126 North F Street, corner ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Perspective view of gas station, 126 North F Street, corner of F and 2nd Streets North, view looking southeast - Lakeview Downtown Historic District, E, F & G Streets between Second Street North & First Street South, Lakeview, Lake County, OR

  17. 126. SECTION OF BREAST WHEELS 7 AND 8, 1843 Frederic ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. SECTION OF BREAST WHEELS 7 AND 8, 1843 Frederic Graff, Jr., Collection of the Franklin Institute - Fairmount Waterworks, East bank of Schuylkill River, Aquarium Drive, Philadelphia, Philadelphia County, PA

  18. 7 CFR 1710.126 - Federal debt delinquency.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... and Basic Policies § 1710.126 Federal debt delinquency. (a) Prior to approval of a loan or advance of... Federal income tax obligations or a loan or loan guarantee from another Federal agency. If delinquent,...

  19. 126. PLAN OF IMPROVEMENT, HUNTINGTON BEACH MUNICIPAL PIER: EXTENSION DETAILS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. PLAN OF IMPROVEMENT, HUNTINGTON BEACH MUNICIPAL PIER: EXTENSION DETAILS Sheet 7 of 11 (#3280) - Huntington Beach Municipal Pier, Pacific Coast Highway at Main Street, Huntington Beach, Orange County, CA

  20. Critical indices for reversible gamma-alpha phase transformation in metallic cerium

    NASA Astrophysics Data System (ADS)

    Soldatova, E. D.; Tkachenko, T. B.

    1980-08-01

    Critical indices for cerium have been determined within the framework of the pseudobinary solution theory along the phase equilibrium curve, the critical isotherm, and the critical isobar. The results obtained verify the validity of relationships proposed by Rushbrook (1963), Griffiths (1965), and Coopersmith (1968). It is concluded that reversible gamma-alpha transformation in metallic cerium is a critical-type transformation, and cerium has a critical point on the phase diagram similar to the critical point of the liquid-vapor system.

  1. Study of cerium diffusion in undoped lithium-6 enriched glass with Rutherford backscattering spectrometry

    NASA Astrophysics Data System (ADS)

    Zhang, Xiaodong; Moore, Michael E.; Lee, Kyung-Min; Lukosi, Eric D.; Hayward, Jason P.

    2016-07-01

    Undoped lithium-6 enriched glasses coated with pure cerium (99.9%) with a gold protection layer on top were heated at three different temperatures (500, 550, and 600 °C) for varied durations (1, 2, and 4 h). Diffusion profiles of cerium in such glasses were obtained with the conventional Rutherford backscattering technique. Through fitting the diffusion profiles with the thin-film solution of Fick's second law, diffusion coefficients of cerium with different annealing temperatures and durations were solved. Then, the activation energy of cerium for the diffusion process in the studied glasses was found to be 114 kJ/mol with the Arrhenius equation.

  2. Shock wave experiments to examine the multiphase properties of cerium

    SciTech Connect

    Jensen, Brian James

    2009-01-01

    There is a scientific need to obtain new data to constrain and refine next generation multi-phase equation-of-state (EOS) for metals. Experiments are needed to locate phase boundaries, determine transition kinetic times, and to obtain EOS and Hugoniot data for relevant phases. The objectives of the current work was to examine the multiphase properties for cerium including the dynamic melt boundary and the low-pressure solid-solid phase transition through the critical point. These objectives were addressed by performing plate impact experiment that used multiple experimental configuration including front-surface impact experiments to directly measure transition kinetics, multislug experiments that used the overtake method to measure sound speeds at pressure, and preheat experiments to map out phase boundaries. Preliminary data and analysis obtained for cerium will be presented.

  3. Fabrication of mesoporous cerium dioxide films by cathodic electrodeposition.

    PubMed

    Kim, Young-Soo; Lee, Jin-Kyu; Ahn, Jae-Hoon; Park, Eun-Kyung; Kim, Gil-Pyo; Baeck, Sung-Hyeon

    2007-11-01

    Mesoporous cerium dioxide (Ceria, CeO2) thin films have been successfully electrodeposited onto ITO-coated glass substrates from an aqueous solution of cerium nitrate using CTAB (Cetyltrimethylammonium Bromide) as a templating agent. The synthesized films underwent detailed characterizations. The crystallinity of synthesized CeO2 film was confirmed by XRD analysis and HR-TEM analysis, and surface morphology was investigated by SEM analysis. The presence of mesoporosity in fabricated films was confirmed by TEM and small angle X-ray analysis. As-synthesized film was observed from XRD analysis and HR-TEM image to have well-crystallized structure of cubic phase CeO2. Transmission electron microscopy and small angle X-ray analysis revealed the presence of uniform mesoporosity with a well-ordered lamellar phase in the CeO2 films electrodeposited with CTAB templating. PMID:18047150

  4. Isomorphic phase transformation in shocked cerium using molecular dynamics

    SciTech Connect

    Dupont, Virginie; Germann, Timothy C; Chen, Shao - Ping

    2010-08-12

    Cerium (Ce) undergoes a significant ({approx}16%) volume collapse associated with an isomorphic fcc-fcc phase transformation when subject to compressive loading. We present here a new Embedded Atom Method (EAM) potential for Cerium that models two minima for the two fcc phases. We show results from its use in Molecular Dynamics (MD) simulations of Ce samples subjected to shocks with pressures ranging from 0.5 to 25 GPa. A split wave structure is observed, with an elastic precursor followed by a plastic wave. The plastic wave causes the expected fcc-fcc phase transformation. Comparisons to experiments and MD simulations on Cesium (Cs) indicate that three waves could be observed. The construction of the EAM potential may be the source of the difference.

  5. Antioxidant activity of levan coated cerium oxide nanoparticles.

    PubMed

    Kim, Sun-Jung; Chung, Bong Hyun

    2016-10-01

    Levan coated cerium oxide nanoparticles (LCNPs) with the enhanced antioxidant activity were successfully synthesized and characterized. Levan and their derivatives are attractive for biomedical applications attributable to their antioxidant, anti-inflammation and anti-tumor properties. LCNPs were synthesized using the one-pot and green synthesis system with levan. For production of nanoparticles, levan plays a role as a stabilizing and reducing agent. Fourier transform infrared spectroscopy (FT-IR) analysis showed that LCNPs successfully synthesized. The morphology and size of nanoparticles were confirmed by transmission electron microscopy (TEM) and dynamic light scattering (DLS). LCNPs have good water solubility and stability. The conjugation of levan with cerium oxide nanoparticles improved antioxidant activity. Moreover the level of ROS was reduced after treatment of LCNPs to H2O2 stimulated NIH3T3 cells. These results demonstrate that the LCNPs are useful for applying of treatment of ROS induced diseases. PMID:27312651

  6. Monomers, Dimers, and Helices: Complexities of Cerium and Plutonium Phenanthrolinecarboxylates.

    PubMed

    Cary, Samantha K; Ferrier, Maryline G; Baumbach, Ryan E; Silver, Mark A; Lezama Pacheco, Juan; Kozimor, Stosh A; La Pierre, Henry S; Stein, Benjamin W; Arico, Alexandra A; Gray, Danielle L; Albrecht-Schmitt, Thomas E

    2016-05-01

    The reaction of Ce(III) or Pu(III) with 1,10-phenanthroline-2,9-dicarboxylic acid (PDAH2) results in the formation of new f-element coordination complexes. In the case of cerium, Ce(PDA)(H2O)2Cl·H2O (1) or [Ce(PDAH)(PDA)]2[Ce(PDAH)(PDA)] (2) was isolated depending on the Ce/ligand ratio in the reaction. The structure of 2 is composed of two distinct substructures that are constructed from the same monomer. This monomer is composed of a Ce(III) cation bound by one PDA(2-) dianionic ligand and one PDAH(-) monoanionic ligand, both of which are tetradentate. Bridging by the carboxylate moieties leads to either [Ce(PDAH)(PDA)]2 dimers or [Ce(PDAH)(PDA)]1∞ helical chains. For plutonium, Pu(PDA)2 (3) was the only product isolated regardless of the Pu/ligand ratio employed in the reaction. During the reaction of plutonium with PDAH2, Pu(III) is oxidized to Pu(IV), generating 3. This assignment is consistent with structural metrics and the optical absorption spectrum. Ambiguity in the assignment of the oxidation state of cerium in 1 and 2 from UV-vis-near-IR spectra invoked the use of Ce L3,2-edge X-ray absorption near-edge spectroscopy, magnetic susceptibility, and heat capacity measurements. These experiments support the assignment of Ce(III) in both compounds. The bond distances and coordination numbers are also consistent with these assignments. 3 contains 8-coordinate Pu(IV), whereas the cerium centers in 1 and 2 are 9- and/or 10-coordinate, which correlates with the increased size of Ce(III) versus Pu(IV). Taken together, these data provide an example of a system where the differences in the redox behavior between these f elements creates more complex chemistry with cerium than with plutonium. PMID:27070401

  7. Optical Response of Shocked Cerium-Doped Lutetium Oxyorthosilicate

    SciTech Connect

    G. D. Stevens

    2003-03-01

    Shock experiments were performed in order to characterize the triboluminescent signature of cerium-doped lutetium oxyorthosilicate (LSO:Ce). This material shows prompt, nano-second timescale light emission when driven by explosive detonation. When properly applied to a surface, it may be used as a shock arrival sensor, and also for imaging the propagation of a shock front. Triboluminescent rise times, spectral content, and spatial resolution measurements are presented.

  8. Fungus mediated synthesis of biomedically important cerium oxide nanoparticles

    SciTech Connect

    Khan, Shadab Ali; Ahmad, Absar

    2013-10-15

    Graphical abstract: - Highlights: • First time biological synthesis of cerium oxide oxide nanoparticles using fungus Humicola sp. • Complete characterization of cerium oxide nanoparticles. • Biosynthesis of naturally protein capped, luminescent and water dispersible CeO{sub 2} nanoparticles. • Biosynthesized CeO{sub 2} nanoparticles can be used for many biomedical applications. - Abstract: Nanomaterials can be synthesized by chemical, physical and the more recently discovered biological routes. The biological routes are advantageous over the chemical and physical ones as unlike these, the biological synthesis protocols occur at ambient conditions, are cheap, non-toxic and eco-friendly. Although purely biological and bioinspired methods for the synthesis of nanomaterials are environmentally benign and energy conserving processes, their true potential has not been explored yet and attempts are being made to extend the formation of technologically important nanoparticles using microorganisms like fungi. Though there have been reports on the biosynthesis of oxide nanoparticles by our group in the past, no attempts have been made to employ fungi for the synthesis of nanoparticles of rare earth metals or lanthanides. Here we report for the first time, the bio-inspired synthesis of biomedically important cerium oxide (CeO{sub 2}) nanoparticles using the thermophilic fungus Humicola sp. The fungus Humicola sp. when exposed to aqueous solutions of oxide precursor cerium (III) nitrate hexahydrate (CeN{sub 3}O{sub 9}·6H{sub 2}O) results in the extracellular formation of CeO{sub 2} nanoparticles containing Ce (III) and Ce (IV) mixed oxidation states, confirmed by X-ray Photoemission Spectroscopy (XPS). The formed nanoparticles are naturally capped by proteins secreted by the fungus and thus do not agglomerate, are highly stable, water dispersible and are highly fluorescent as well. The biosynthesized nanoparticles were characterized by UV–vis spectroscopy

  9. Engineered cerium oxide nanoparticles: Effects on bacterial growth and viability

    SciTech Connect

    Pelletier, Dale A; Suresh, Anil K; Holton, Gregory A; McKeown, Catherine K; Wang, Wei; Gu, Baohua; Mortensen, Ninell P; Allison, David P; Joy, David Charles; Allison, Martin R; Brown, Steven D; Phelps, Tommy Joe; Doktycz, Mitchel John

    2010-01-01

    Interest in engineered nanostructures has risen in recent years due to their use in energy conservation strategies and biomedicine. To ensure prudent development and use of nanomaterials, the fate and effects of such engineered structures on the environment should be understood. Interactions of nanomaterials with environmental microorganisms are inevitable, but the general consequences of such interactions remain unclear. Further, standardized methods for assessing such interactions are lacking. Therefore, we have initiated a multianalytical approach to understand the interactions of synthesized nanoparticles with bacterial systems. These efforts are focused initially on cerium oxide nanoparticles and model bacteria in order to evaluate characterization procedures and the possible fate of such materials in the environment. In this study the effects of cerium oxide nanoparticles on the growth and viability of Gram-negative Escherichia coli and Shewanella oneidensis, a metal-reducing bacteria, and Gram-positive Bacillus subtilis were examined relative to particle size, growth media, pH, and dosage. A hydrothermal based synthesis procedure was used to prepare cerium oxide nanoparticles of defined sizes in order to eliminate complications originating from the use of organic solvents and surfactants. Bactericidal effects were determined by minimum inhibitory concentration, colony forming units, disc diffusion tests and Live/Dead assays. In growth inhibition experiments involving E. coli and B. subtilis, a clear strain and size-dependent inhibition was observed. S. oneidensis appeared to be unaffected by the cerium oxide nanoparticles. Transmission electron microscopy along with microarray-based transcriptional profiling have been used to understand the response mechanism of the bacteria. The use of multiple analytical approaches adds confidence to toxicity assessments while the use of different bacterial systems highlights the potential wide-ranging effects of

  10. Jet formation in cerium metal to examine material strength

    SciTech Connect

    Jensen, B. J. Cherne, F. J.; Prime, M. B.; Yeager, J. D.; Ramos, K. J.; Hooks, D. E.; Cooley, J. C.; Dimonte, G.; Fezzaa, K.; Iverson, A. J.; Carlson, C. A.

    2015-11-21

    Examining the evolution of material properties at extreme conditions advances our understanding of numerous high-pressure phenomena from natural events like meteorite impacts to general solid mechanics and fluid flow behavior. Recent advances in synchrotron diagnostics coupled with dynamic compression platforms have introduced new possibilities for examining in-situ, spatially resolved material response with nanosecond time resolution. In this work, we examined jet formation from a Richtmyer-Meshkov instability in cerium initially shocked into a transient, high-pressure phase, and then released to a low-pressure, higher-temperature state. Cerium's rich phase diagram allows us to study the yield stress following a shock induced solid-solid phase transition. X-ray imaging was used to obtain images of jet formation and evolution with 2–3 μm spatial resolution. From these images, an analytic method was used to estimate the post-shock yield stress, and these results were compared to continuum calculations that incorporated an experimentally validated equation-of-state (EOS) for cerium coupled with a deviatoric strength model. Reasonable agreement was observed between the calculations and the data illustrating the sensitivity of jet formation on the yield stress values. The data and analysis shown here provide insight into material strength during dynamic loading which is expected to aid in the development of strength aware multi-phase EOS required to predict the response of matter at extreme conditions.

  11. Enhancing cerium and plutonium solubility by reduction in borosilicate glass

    NASA Astrophysics Data System (ADS)

    Cachia, J.-N.; Deschanels, X.; Den Auwer, C.; Pinet, O.; Phalippou, J.; Hennig, C.; Scheinost, A.

    2006-06-01

    High-level radioactive wastes produced by spent fuel reprocessing containing fission and activation products as well as actinides are incorporated in a borosilicate glass. To ensure optimum radionuclide containment, the resulting glass must be as homogeneous as possible. Microscopic heterogeneity can arise from various processes including the excess loading of an element above its solubility limit. The current actinide loading limit is 0.4 wt%. Work is in progress to assess the actinide solubility in these glasses, especially for plutonium. Initially the actinides were simulated by lanthanides and hafnium. The results show that trivalent elements (La, Gd) exhibit greater solubility than tetravalent elements (Pu, Hf). Cerium is an interesting element because its oxidation state varies from IV to III depending on the process conditions, such as the temperature and redox potential of the melt. In order to quantify the solubility increase, cerium-doped glass samples were melted under reducing conditions by adding a reducing agent. The solubility observed at 1473 K increased significantly from 0.95 to 13.00 wt%. Several reducing compounds have been tested. This paper deals with this study and the application to reduce Pu(IV) to Pu(III). The reduction state was characterized by X-ray absorption spectroscopy (XANES) for plutonium and by chemical analysis for cerium. The material homogeneity was verified by optical and scanning electron microscopy. Preliminary findings concerning the reduction of Pu-doped glasses fabricated in hot cells are also discussed.

  12. Jet formation in cerium metal to examine material strength

    NASA Astrophysics Data System (ADS)

    Jensen, B. J.; Cherne, F. J.; Prime, M. B.; Fezzaa, K.; Iverson, A. J.; Carlson, C. A.; Yeager, J. D.; Ramos, K. J.; Hooks, D. E.; Cooley, J. C.; Dimonte, G.

    2015-11-01

    Examining the evolution of material properties at extreme conditions advances our understanding of numerous high-pressure phenomena from natural events like meteorite impacts to general solid mechanics and fluid flow behavior. Recent advances in synchrotron diagnostics coupled with dynamic compression platforms have introduced new possibilities for examining in-situ, spatially resolved material response with nanosecond time resolution. In this work, we examined jet formation from a Richtmyer-Meshkov instability in cerium initially shocked into a transient, high-pressure phase, and then released to a low-pressure, higher-temperature state. Cerium's rich phase diagram allows us to study the yield stress following a shock induced solid-solid phase transition. X-ray imaging was used to obtain images of jet formation and evolution with 2-3 μm spatial resolution. From these images, an analytic method was used to estimate the post-shock yield stress, and these results were compared to continuum calculations that incorporated an experimentally validated equation-of-state (EOS) for cerium coupled with a deviatoric strength model. Reasonable agreement was observed between the calculations and the data illustrating the sensitivity of jet formation on the yield stress values. The data and analysis shown here provide insight into material strength during dynamic loading which is expected to aid in the development of strength aware multi-phase EOS required to predict the response of matter at extreme conditions.

  13. Antibacterial Activity of Polymer Coated Cerium Oxide Nanoparticles

    PubMed Central

    Shah, Vishal; Shah, Shreya; Shah, Hirsh; Rispoli, Fred J.; McDonnell, Kevin T.; Workeneh, Selam; Karakoti, Ajay; Kumar, Amit; Seal, Sudipta

    2012-01-01

    Cerium oxide nanoparticles have found numerous applications in the biomedical industry due to their strong antioxidant properties. In the current study, we report the influence of nine different physical and chemical parameters: pH, aeration and, concentrations of MgSO4, CaCl2, KCl, natural organic matter, fructose, nanoparticles and Escherichia coli, on the antibacterial activity of dextran coated cerium oxide nanoparticles. A least-squares quadratic regression model was developed to understand the collective influence of the tested parameters on the anti-bacterial activity and subsequently a computer-based, interactive visualization tool was developed. The visualization allows us to elucidate the effect of each of the parameters in combination with other parameters, on the antibacterial activity of nanoparticles. The results indicate that the toxicity of CeO2 NPs depend on the physical and chemical environment; and in a majority of the possible combinations of the nine parameters, non-lethal to the bacteria. In fact, the cerium oxide nanoparticles can decrease the anti-bacterial activity exerted by magnesium and potassium salts. PMID:23110109

  14. Induction of pulmonary fibrosis by cerium oxide nanoparticles

    SciTech Connect

    Ma, Jane Y.; Mercer, Robert R.; Barger, Mark; Schwegler-Berry, Diane; Scabilloni, James; Ma, Joseph K.; Castranova, Vincent

    2012-08-01

    Cerium compounds have been used as a diesel engine catalyst to lower the mass of diesel exhaust particles, but are emitted as cerium oxide (CeO{sub 2}) nanoparticles in the diesel exhaust. In a previous study, we have demonstrated a wide range of CeO{sub 2}-induced lung responses including sustained pulmonary inflammation and cellular signaling that could lead to pulmonary fibrosis. In this study, we investigated the fibrogenic responses induced by CeO{sub 2} in a rat model at various time points up to 84 days post-exposure. Male Sprague Dawley rats were exposed to CeO{sub 2} by a single intratracheal instillation. Alveolar macrophages (AM) were isolated by bronchial alveolar lavage (BAL). AM-mediated cellular responses, osteopontin (OPN) and transform growth factor (TGF)-β1 in the fibrotic process were investigated. The results showed that CeO{sub 2} exposure significantly increased fibrotic cytokine TGF-β1 and OPN production by AM above controls. The collagen degradation enzymes, matrix metalloproteinase (MMP)-2 and -9 and the tissue inhibitor of MMP were markedly increased in the BAL fluid at 1 day- and subsequently declined at 28 days after exposure, but remained much higher than the controls. CeO{sub 2} induced elevated phospholipids in BAL fluid and increased hydroxyproline content in lung tissue in a dose- and time-dependent manner. Immunohistochemical analysis showed MMP-2, MMP-9 and MMP-10 expressions in fibrotic regions. Morphological analysis noted increased collagen fibers in the lungs exposed to a single dose of 3.5 mg/kg CeO{sub 2} and euthanized at 28 days post-exposure. Collectively, our studies show that CeO{sub 2} induced fibrotic lung injury in rats, suggesting it may cause potential health effects. -- Highlights: ► Cerium oxide exposure significantly affected the following parameters in the lung. ► Induced fibrotic cytokine OPN and TGF-β1 production and phospholipidosis. ► Caused imbalance of the MMP-9/ TIMP-1 ratio that favors fibrosis

  15. Dynamic shape effect in {sup 126}Ba at low spin

    SciTech Connect

    Dewald, A.; Weil, D.; Kruecken, R.; Kuehn, R.; Peusquens, R.; Tiesler, H.; Vogel, O.; Zell, K.O.; von Brentano, P.; Bazzacco, D.; Rossi-Alvarez, C.; Pavan, P.; DeAcuna, D.; De Angelis, G.; De Poli, M. ||

    1996-11-01

    Lifetimes of excited states in {sup 126}Ba have been measured with high precision by means of the GASP spectrometer using the coincidence recoil distance technique. The reaction {sup 100}Mo({sup 30}Si,4{ital n}) {sup 126}Ba at a beam energy of 130 MeV was used. The data were analyzed with the differential decay-curve method (DDCM). The obtained transition quadrupole moments disagree with the predictions of the asymmetric rotor model (ARM), the interacting boson model (IBM), and the general collective model (GCM). They give evidence for a sudden dynamic shape change in {sup 126}Ba between the 4{sup +} and 10{sup +} levels of the ground-state band. {copyright} {ital 1996 The American Physical Society.}

  16. Photodynamical modeling of hierarchical stellar system KOI-126

    NASA Astrophysics Data System (ADS)

    Earl, Nicholas Michael

    The power and precision of the Kepler space telescope has provided the astrophysical field with a valuable insight into the dynamics of extra-solar systems. KOI-126 represents the first eclipsing hierarchical triple stellar system identified in the Kepler mission's photometry. The dynamics of the system are such that ascertaining the parameters of each body accurately (better than a few percent) is possible from the photometry alone. This allows determination of the characteristics while avoiding biases inherent in traditional studies of low-mass eclipsing systems. The parameter set for KOI-126 was originally reported on by Carter et al. and is uniquely composed of a low-mass binary, KOI-126 B and KOI-126 C. This pair orbits a third, more massive star KOI-126 A. The original analysis employed a full dynamical-photometric model, utilizing a Levenberg-Marquardt algorithm and least-squares minimization, to fit the short-cadence (i.e. successive 58.84 second cadence exposures) photometric data from the Kepler spacecraft captured over a period of 247 days. The updated catalog of short-cadence data now covers a span of 1,300 days. In light of the new data, and the valuable contribution accurately sampled fully-convective stars offer to theoretical stellar models, it is therefore relevant to refine the parameters of this system. Furthermore, with the ubiquity of multi-stellar systems, a well documented, portable, scalable computer modeling code for N-body systems is introduced. Thus, a new analysis is done on KOI-126 using this parallelized dynamical-photometric modeling package written in Python, based on Carter et al.'s original code, titled Pynamic. Pynamic allows the use of several fitting algorithms, but in this analysis utilizes the affine-invariant Markov chain Monte Carlo ensemble.

  17. Cerium doped red mud catalytic ozonation for bezafibrate degradation in wastewater: Efficiency, intermediates, and toxicity.

    PubMed

    Xu, Bingbing; Qi, Fei; Sun, Dezhi; Chen, Zhonglin; Robert, Didier

    2016-03-01

    In this study, the performance of bezafibrate (BZF) degradation and detoxification in the aqueous phase using cerium-modified red mud (RM) catalysts prepared using different cerium sources and synthesis methods were evaluated. Experimental results showed that the surface cerium modification was responsible for the development of the catalytic activity of RM and this was influenced by the cerium source and the synthesis method. Catalyst prepared from cerium (IV) by precipitation was found to show the best catalytic activity in BZF degradation and detoxification. Reactive oxygen species including peroxides, hydroxyl radicals, and super oxide ions were identified in all reactions and we proposed the corresponding catalytic reaction mechanism for each catalyst that prepared from different cerium source and method. This was supported by the intermediates profiles that were generated upon BZF degradation. The surface and the structural properties of cerium-modified RM were characterized in detail by several analytical methods. Two interesting findings were made: (1) the surface texture (specific surface area and mesoporous volume) influenced the catalytic reaction pathway; and (2) Ce(III) species and oxygen vacancies were generated on the surface of the catalyst after cerium modification. This plays an important role in the development of the catalytic activity. PMID:26706928

  18. 40 CFR Appendix C to Part 97 - Final Section 126 Rule: Trading Budget

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Final Section 126 Rule: Trading Budget... PROGRAMS (CONTINUED) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Pt. 97, App. C Appendix C to Part 97—Final Section 126 Rule: Trading Budget ST F126-EGU F126-NEGU Total DC 207...

  19. 40 CFR Appendix C to Part 97 - Final Section 126 Rule: Trading Budget

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 21 2011-07-01 2011-07-01 false Final Section 126 Rule: Trading Budget... PROGRAMS (CONTINUED) FEDERAL NOX BUDGET TRADING PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Pt. 97, App. C Appendix C to Part 97—Final Section 126 Rule: Trading Budget ST F126-EGU F126-NEGU Total DC 207...

  20. Hydrocarbon-based polymer electrolyte cerium composite membranes for improved proton exchange membrane fuel cell durability

    NASA Astrophysics Data System (ADS)

    Lee, Hyejin; Han, Myungseong; Choi, Young-Woo; Bae, Byungchan

    2015-11-01

    Hydrocarbon-based cerium composite membranes were prepared for proton exchange membrane fuel cell applications to increase oxidative stability. Different amounts of cerium ions were impregnated in sulfonated poly(arylene ether sulfone) (SPES) membranes and their physicochemical properties were investigated according to the cerium content. Field-emission scanning electron microscopy and inductively coupled plasma analyses confirmed the presence of cerium ions in the composite membranes and 1H NMR indicated the successful coordination of sulfonic acid groups with the metal ions. Increasing amounts of cerium ions resulted in decreases in the proton conductivity and water uptake, but enhanced oxidative stability. The oxidative stability of the composite membranes was proven via a hydrogen peroxide exposure experiment which mimicked fuel cell operating conditions. In addition, more than 2200 h was achieved with the composite membrane under in situ accelerated open circuit voltage (OCV) durability testing (DOE protocol), whereas the corresponding pristine SPES membrane attained only 670 h.

  1. Tuning Reactivity and Electronic Properties through Ligand Reorganization within a Cerium Heterobimetallic Framework

    SciTech Connect

    Robinson, Jerome R.; Gordon, Zachary; Booth, Corwin H.; Carroll, Patrick J.; Walsh, Patrick J.; Schelter, Eric J.

    2014-06-24

    Cerium compounds have played vital roles in organic, inorganic, and materials chemistry due to their reversible redox chemistry between trivalent and tetravalent oxidation states. However, attempts to rationally access molecular cerium complexes in both oxidation states have been frustrated by unpredictable reactivity in cerium(III) oxidation chemistry. Such oxidation reactions are limited by steric saturation at the metal ion, which can result in high energy activation barriers for electron transfer. An alternative approach has been realized using a rare earth/alkali metal/1,1'-BINOLate (REMB) heterobimetallic framework, which uses redox-inactive metals within the secondary coordination sphere to control ligand reorganization. The rational syntheses of functionalized cerium(IV) products and a mechanistic examination of the role of ligand reorganization in cerium(III) oxidation are presented.

  2. 40 CFR Appendix D to Part 97 - Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons)

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 21 2011-07-01 2011-07-01 false Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons) D Appendix D to Part 97 Protection of... PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Pt. 97, App. D Appendix D to Part 97—Final Section 126...

  3. 40 CFR Appendix D to Part 97 - Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons)

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 21 2014-07-01 2014-07-01 false Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons) D Appendix D to Part 97 Protection of... PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Pt. 97, App. D Appendix D to Part 97—Final Section 126...

  4. 40 CFR Appendix D to Part 97 - Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons)

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons) D Appendix D to Part 97 Protection of... PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Pt. 97, App. D Appendix D to Part 97—Final Section 126...

  5. 40 CFR Appendix D to Part 97 - Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons)

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 22 2013-07-01 2013-07-01 false Final Section 126 Rule: State Compliance supplement pools for the Section 126 Final Rule (Tons) D Appendix D to Part 97 Protection of... PROGRAM AND CAIR NOX AND SO2 TRADING PROGRAMS Pt. 97, App. D Appendix D to Part 97—Final Section 126...

  6. Effects of uncoated and citric acid coated cerium oxide nanoparticles, bulk cerium oxide, cerium acetate, and citric acid on tomato plants.

    PubMed

    Barrios, Ana Cecilia; Rico, Cyren M; Trujillo-Reyes, Jesica; Medina-Velo, Illya A; Peralta-Videa, Jose R; Gardea-Torresdey, Jorge L

    2016-09-01

    Little is known about the physiological and biochemical responses of plants exposed to surface modified nanomaterials. In this study, tomato (Solanum lycopersicum L.) plants were cultivated for 210days in potting soil amended with uncoated and citric acid coated cerium oxide nanoparticles (nCeO2, CA+nCeO2) bulk cerium oxide (bCeO2), and cerium acetate (CeAc). Millipore water (MPW), and citric acid (CA) were used as controls. Physiological and biochemical parameters were measured. At 500mg/kg, both the uncoated and CA+nCeO2 increased shoot length by ~9 and ~13%, respectively, while bCeO2 and CeAc decreased shoot length by ~48 and ~26%, respectively, compared with MPW (p≤0.05). Total chlorophyll, chlo-a, and chlo-b were significantly increased by CA+nCeO2 at 250mg/kg, but reduced by bCeO2 at 62.5mg/kg, compared with MPW. At 250 and 500mg/kg, nCeO2 increased Ce in roots by 10 and 7 times, compared to CA+nCeO2, but none of the treatments affected the Ce concentration in above ground tissues. Neither nCeO2 nor CA+nCeO2 affected the homeostasis of nutrient elements in roots, stems, and leaves or catalase and ascorbate peroxidase in leaves. CeAc at 62.5 and 125mg/kg increased B (81%) and Fe (174%) in roots, while at 250 and 500mg/kg, increased Ca in stems (84% and 86%, respectively). On the other hand, bCeO2 at 62.5 increased Zn (152%) but reduced P (80%) in stems. Only nCeO2 at 62.5mg/kg produced higher total number of tomatoes, compared with control and the rest of the treatments. The surface coating reduced Ce uptake by roots but did not affect its translocation to the aboveground organs. In addition, there was no clear effect of surface coating on fruit production. To our knowledge, this is the first study comparing the effects of coated and uncoated nCeO2 on tomato plants. PMID:26672385

  7. 27 CFR 17.126 - Formulas for intermediate products.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Formulas for intermediate... NONBEVERAGE PRODUCTS Formulas and Samples § 17.126 Formulas for intermediate products. (a) The manufacturer shall submit a formula on TTB Form 5154.1 for each self-manufactured ingredient made with...

  8. 45 CFR 147.126 - No lifetime or annual limits.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Protection and Affordable Care Act and applicable regulations. (d) Restricted annual limits permissible prior....126 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS... subject to all of the provisions of PHS Act sections 2701 through 2719A. Example 6. (i) Facts. For...

  9. 45 CFR 147.126 - No lifetime or annual limits.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Protection and Affordable Care Act and applicable regulations. (d) Restricted annual limits permissible prior....126 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS... subject to all of the provisions of PHS Act sections 2701 through 2719A. Example 6. (i) Facts. For...

  10. 41 CFR 105-71.126 - Non-Federal audit.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 41 Public Contracts and Property Management 3 2013-07-01 2013-07-01 false Non-Federal audit. 105... GOVERNMENTS 71.12-Post-Award Requirements/Financial Administration § 105-71.126 Non-Federal audit. (a) Basic rule. Grantees and subgrantees are responsible for obtaining audits in accordance with the Single...

  11. 41 CFR 105-71.126 - Non-Federal audit.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 41 Public Contracts and Property Management 3 2012-01-01 2012-01-01 false Non-Federal audit. 105... GOVERNMENTS 71.12-Post-Award Requirements/Financial Administration § 105-71.126 Non-Federal audit. (a) Basic rule. Grantees and subgrantees are responsible for obtaining audits in accordance with the Single...

  12. 41 CFR 105-71.126 - Non-Federal audit.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 41 Public Contracts and Property Management 3 2011-01-01 2011-01-01 false Non-Federal audit. 105... GOVERNMENTS 71.12-Post-Award Requirements/Financial Administration § 105-71.126 Non-Federal audit. (a) Basic rule. Grantees and subgrantees are responsible for obtaining audits in accordance with the Single...

  13. 41 CFR 105-71.126 - Non-Federal audit.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 41 Public Contracts and Property Management 3 2014-01-01 2014-01-01 false Non-Federal audit. 105... GOVERNMENTS 71.12-Post-Award Requirements/Financial Administration § 105-71.126 Non-Federal audit. (a) Basic rule. Grantees and subgrantees are responsible for obtaining audits in accordance with the Single...

  14. 27 CFR 26.126 - Taxpayment in Puerto Rico.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Taxpayment in Puerto Rico..., DEPARTMENT OF THE TREASURY LIQUORS LIQUORS AND ARTICLES FROM PUERTO RICO AND THE VIRGIN ISLANDS Liquors and Articles Purchased by Tourists in Puerto Rico § 26.126 Taxpayment in Puerto Rico. Liquors upon which...

  15. 22 CFR Appendix - Supplement No. 1 to Part 126

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Supplement No. 1 to Part 126 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS Exemptions regarding intra-company, intra-organization, and intra-governmental transfers to employees who are dual nationals or third-country nationals....

  16. 40 CFR Appendix A to Part 423 - 126 Priority Pollutants

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 28 2010-07-01 2010-07-01 true 126 Priority Pollutants A Appendix A to Part 423 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND... Priority Pollutants 001Acenaphthene 002Acrolein 003Acrylonitrile 004Benzene 005Benzidine...

  17. 46 CFR 126.350 - Specific tests and inspections.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Initial Inspection § 126.350 Specific tests and inspections. (a) The applicable tests and inspections set forth in subpart D of this part must be made during the initial inspection. (b) The...

  18. 46 CFR 126.350 - Specific tests and inspections.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Initial Inspection § 126.350 Specific tests and inspections. (a) The applicable tests and inspections set forth in subpart D of this part must be made during the initial inspection. (b) The...

  19. 46 CFR 126.350 - Specific tests and inspections.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Initial Inspection § 126.350 Specific tests and inspections. (a) The applicable tests and inspections set forth in subpart D of this part must be made during the initial inspection. (b) The...

  20. 46 CFR 126.350 - Specific tests and inspections.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Initial Inspection § 126.350 Specific tests and inspections. (a) The applicable tests and inspections set forth in subpart D of this part must be made during the initial inspection. (b) The...

  1. 46 CFR 126.350 - Specific tests and inspections.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS INSPECTION AND CERTIFICATION Initial Inspection § 126.350 Specific tests and inspections. (a) The applicable tests and inspections set forth in subpart D of this part must be made during the initial inspection. (b) The...

  2. 126. EXTERIOR VIEW, LOOKING NORTH, SHOWING CAST SHED NO. 2, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. EXTERIOR VIEW, LOOKING NORTH, SHOWING CAST SHED NO. 2, FURNACE NO. 2, STOVES, POWER HOUSE, STACKS, FURNACE NO. 1 CAST SHED. FURNACE NO. 2 IS IN PROCESS OF RESTORATION. - Sloss-Sheffield Steel & Iron, First Avenue North Viaduct at Thirty-second Street, Birmingham, Jefferson County, AL

  3. 22 CFR Appendix - Supplement No. 1 to Part 126

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Supplement No. 1 to Part 126 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS Exemptions regarding intra-company, intra-organization, and intra-governmental transfers to employees who are...

  4. 40 CFR Appendix A to Part 423 - 126 Priority Pollutants

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 29 2011-07-01 2009-07-01 true 126 Priority Pollutants A Appendix A to Part 423 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY Pt. 423, App. A Appendix A to Part...

  5. 40 CFR 421.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Secondary Silver Subcategory § 421.126 Pretreatment standards for new sources. Except as provided in 40 CFR 403.7, any new source... 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass...

  6. 40 CFR 421.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Secondary Silver Subcategory § 421.126 Pretreatment standards for new sources. Except as provided in 40 CFR 403.7, any new source... 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass...

  7. 40 CFR 421.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... § 421.126 Pretreatment standards for new sources. Except as provided in 40 CFR 403.7, any new source... 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of... following values: (a) Subpart L—Film Stripping. PSNS Pollutant or pollutant property Maximum for any 1...

  8. 40 CFR 421.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... § 421.126 Pretreatment standards for new sources. Except as provided in 40 CFR 403.7, any new source... 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of... following values: (a) Subpart L—Film Stripping. PSNS Pollutant or pollutant property Maximum for any 1...

  9. 40 CFR 421.126 - Pretreatment standards for new sources.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... § 421.126 Pretreatment standards for new sources. Except as provided in 40 CFR 403.7, any new source... 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of... following values: (a) Subpart L—Film Stripping. PSNS Pollutant or pollutant property Maximum for any 1...

  10. 19 CFR 12.6 - Affidavits required to accompany entry.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Section 12.6 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY... required to accompany entry. (a) Cheeses produced in the member states of the European Communities shall... not be required to accompany importations of cheese produced in the member states of the...

  11. 21 CFR 814.126 - Postapproval requirements and reports.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... (CONTINUED) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES Humanitarian Use Devices § 814.126... of § 814.82(a)(7). In addition, medical device reports submitted to FDA in compliance with the... known or reasonably should be known to the applicant, medical device reports made under part 803 of...

  12. 46 CFR 126.480 - Safety Management Certificate.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... vessels of 500 gross tons or over to which 33 CFR part 96 applies, on an international voyage must have a... certificate on board. (b) A Safety Management Certificate is issued for a period of not more than 60 months. ... 46 Shipping 4 2010-10-01 2010-10-01 false Safety Management Certificate. 126.480 Section...

  13. 126. REDUNDANCY SYSTEM CONTROLS FOR UMBILICAL MAST RETRACTION AT LOWER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. REDUNDANCY SYSTEM CONTROLS FOR UMBILICAL MAST RETRACTION AT LOWER LEFT SIDE OF HYDRAULIC CONTROL PANEL IN UMBILICAL MAST PUMP ROOM (209), LSB (BLDG. 751) - Vandenberg Air Force Base, Space Launch Complex 3, Launch Pad 3 East, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

  14. 41 CFR 105-71.126 - Non-Federal audit.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 3 2010-07-01 2010-07-01 false Non-Federal audit. 105... Administration 71-UNIFORM ADMINISTRATIVE REQUIREMENTS FOR GRANTS AND COOPERATIVE AGREEMENTS WITH STATE AND LOCAL GOVERNMENTS 71.12-Post-Award Requirements/Financial Administration § 105-71.126 Non-Federal audit. (a)...

  15. 21 CFR 814.126 - Postapproval requirements and reports.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... (CONTINUED) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES Humanitarian Use Devices § 814.126... of § 814.82(a)(7). In addition, medical device reports submitted to FDA in compliance with the... known or reasonably should be known to the applicant, medical device reports made under part 803 of...

  16. 21 CFR 814.126 - Postapproval requirements and reports.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... (CONTINUED) MEDICAL DEVICES PREMARKET APPROVAL OF MEDICAL DEVICES Humanitarian Use Devices § 814.126... of § 814.82(a)(7). In addition, medical device reports submitted to FDA in compliance with the... known or reasonably should be known to the applicant, medical device reports made under part 803 of...

  17. 40 CFR Appendix A to Part 423 - 126 Priority Pollutants

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 30 2012-07-01 2012-07-01 false 126 Priority Pollutants A Appendix A to Part 423 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY Pt. 423, App. A Appendix A to...

  18. 40 CFR Appendix A to Part 423 - 126 Priority Pollutants

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 30 2013-07-01 2012-07-01 true 126 Priority Pollutants A Appendix A to Part 423 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY Pt. 423, App. A Appendix A to Part...

  19. 40 CFR Appendix A to Part 423 - 126 Priority Pollutants

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 29 2014-07-01 2012-07-01 true 126 Priority Pollutants A Appendix A to Part 423 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS STEAM ELECTRIC POWER GENERATING POINT SOURCE CATEGORY Pt. 423, App. A Appendix A to Part...

  20. 50 CFR 216.126 - Applications for Letters of Authorization.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS Taking Of Marine Mammals Incidental To Space Vehicle And Test Flight Activities § 216.126 Applications for Letters of Authorization. (a) To incidentally take marine mammals pursuant...

  1. 50 CFR 216.126 - Applications for Letters of Authorization.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE MAMMALS Taking Of Marine Mammals Incidental To Space Vehicle And Test Flight Activities § 216.126 Applications for Letters of Authorization. (a) To incidentally take marine mammals pursuant...

  2. Identification of the Charge Carriers in Cerium Phosphate Ceramics

    SciTech Connect

    Ray, Hannah L.; Jonghe, Lutgard C. De

    2010-06-02

    The total conductivity of Sr-doped cerium orthophosphate changes by nearly two orders of magnitude depending on the oxygen and hydrogen content of the atmosphere. The defect model for the system suggests that this is because the identity of the dominant charge carrier can change from electron holes to protons when the sample is in equilibrium with air vs. humidified hydrogen. In this work are presented some preliminary measurements that can help to clarify this exchange between carriers. The conduction behavior of a 2percent Sr-doped CePO4 sample under symmetric atmospheric conditions is investigated using several techniques, including AC impedance, H/D isotope effects, and chronoamperometry.

  3. Luminescence of cerium-doped strontium barium niobate

    NASA Astrophysics Data System (ADS)

    Lee, Sun-Kyun; Son, Chang-Won; Chung, Sun-Ju; Tak, Sung-Jun; Lim, Ki-Soo

    2000-10-01

    The broad photoluminescent emission from Ce:Sr0.6Ba0.4Nb2O6 has been observed at 550 nm with excitation in the blue. Photoluminescent excitation spectrum has revealed a trivalent cerium absorption band that is assumed to be a 4f-5d transition. Temperature dependence of the photoluminescence spectra and its lifetimes in 15 - 365 K showed the existence of two different trap centers in the material. We have also investigated the photoluminescence during two-wave mixing experiment to study trap centers.

  4. Study of Phase Transitions in Cerium by Pressure Gauge PVDF

    NASA Astrophysics Data System (ADS)

    Zhernokletov, Mikhail; Simakov, Vladimir; Borissenok, Valery; Bragunets, Viacheslav; Volgin, Vasily; Cherne, Frank; Zocher, Marvin

    2007-06-01

    This paper examines phase transitions in cerium during shock compression using PVDF gauges. A two-wave structure was observed with loading pressures of 4GPa - 12GPa. The wave structure consists of leading isentropic compression wave followed by a shock wave. This wave structure was formed as a result of the isomorphic (γ-α) phase transition. The wave profiles exhibited no peculiarities resulting from the polymorphic transition (α-ɛ) as predicted by Elkin et. al [Proceedings of the International Conference VII Khariton Readings, Sarov 2005, p. 116].

  5. Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles.

    PubMed

    Majumdar, Sanghamitra; Peralta-Videa, Jose R; Trujillo-Reyes, Jesica; Sun, Youping; Barrios, Ana C; Niu, Genhua; Margez, Juan P Flores-; Gardea-Torresdey, Jorge L

    2016-11-01

    Soil organic matter plays a major role in determining the fate of the engineered nanomaterials (ENMs) in the soil matrix and effects on the residing plants. In this study, kidney bean plants were grown in soils varying in organic matter content and amended with 0-500mg/kg cerium oxide nanoparticles (nano-CeO2) under greenhouse condition. After 52days of exposure, cerium accumulation in tissues, plant growth and physiological parameters including photosynthetic pigments (chlorophylls and carotenoids), net photosynthesis rate, transpiration rate, and stomatal conductance were recorded. Additionally, catalase and ascorbate peroxidase activities were measured to evaluate oxidative stress in the tissues. The translocation factor of cerium in the nano-CeO2 exposed plants grown in organic matter enriched soil (OMES) was twice as the plants grown in low organic matter soil (LOMS). Although the leaf cover area increased by 65-111% with increasing nano-CeO2 concentration in LOMS, the effect on the physiological processes were inconsequential. In OMES leaves, exposure to 62.5-250mg/kg nano-CeO2 led to an enhancement in the transpiration rate and stomatal conductance, but to a simultaneous decrease in carotenoid contents by 25-28%. Chlorophyll a in the OMES leaves also decreased by 27 and 18% on exposure to 125 and 250mg/kg nano-CeO2. In addition, catalase activity increased in LOMS stems, and ascorbate peroxidase increased in OMES leaves of nano-CeO2 exposed plants, with respect to control. Thus, this study provides clear evidence that the properties of the complex soil matrix play decisive roles in determining the fate, bioavailability, and biological transport of ENMs in the environment. PMID:27343939

  6. Adenocarcinoma cells isolated from patients in the presence of cerium and transferrin in vitro

    PubMed Central

    Zende-Del, A; Gholami, MR; Abdollahpour, F; Ahmadvand, H

    2015-01-01

    Aim: Cerium as a trace element in the periodic table is a member of the lanthanide group. Cerium ionic radius and its binding properties are similar to ferric ions, which may be bound to transferrin. So it can be considered as a competitive element to iron and can interfere with iron absorption. The aim of this study was to investigate the inhibitory effect of Cerium in presence of transferrin on gastric adenocarcinoma cells in vitro. Methods: The adenocarcinoma cells were obtained from patients after a pathological confirmation, then they were cultured in DMEM environment and cytotoxic effect of different concentrations of cerium were measured (0.1, 1, 10 and 100 µM) in the presence and absence of transferrin, on periods 24 and 48 hours by MTT and LDH cytotoxic assay. Results: The results of MTT and LDH measurements showed that Cerium itself has a cytotoxic effect on cancer cells isolated from the patient as well as it increases significantly in the presence of transferrin carrying a mortality rate of cancer cells (P <.05). Conclusion: Cerium is competitive element in the mechanism of iron absorption and can interfere and inhibit the growth of adenocarcinoma cancer cells; also, the use of Cerium and transferrin simultaneously may cause a greater inhibitory effect. PMID:26664465

  7. Novel borothermal route for the synthesis of lanthanum cerium hexaborides and their field emission properties

    SciTech Connect

    Menaka; Patra, Rajkumar; Ghosh, Santanu; Ganguli, Ashok K.

    2012-10-15

    The present study describes the development of a simple approach to stabilize polycrystalline lanthanum cerium hexaborides without using any flux and at ambient pressure. The nanostructured lanthanum-cerium borides were synthesized using hydroxide precursors. These precursors (La{sub 1-x}Ce{sub x}(OH){sub 3}, x=0.1, 0.2, 0.3 and 0.5) were synthesized via hydrothermal route in the presence of Tergitol (surfactant, nonylphenol ethoxylate) as a capping agent. The precursors on heating with boron at 1300 Degree-Sign C lead to the formation of nanostructures (cubes, rods and pyramids) of lanthanum cerium hexaboride. We have investigated the field emission behaviour of the hexaboride films fabricated by spin coating. It was observed that the pyramidal shaped nanostructures of La{sub 0.5}Ce{sub 0.5}B{sub 6} shows excellent field emission characteristics with high field enhancement factor of 4502. - Graphical abstract: Nanostructured lanthanum cerium hexaboride with efficient field emission have fabricated by low temperature hydroxide precursor mediated route. Highlights: Black-Right-Pointing-Pointer New methodology to prepare lanthanum cerium hexaboride at 1300 Degree-Sign C via borothermal route. Black-Right-Pointing-Pointer Nanostructured lanthanum cerium hexaboride film by spin coating process. Black-Right-Pointing-Pointer Nanopyramids based lanthanum cerium hexaboride shows excellent field emission.

  8. An environmentally compliant cerium-based conversion coating for aluminum protection

    NASA Astrophysics Data System (ADS)

    Lin, Xuan

    Chromate conversion coatings have been extensively used in the aircraft industry for the corrosion protection of aluminum alloys. Unfortunately, hexavalent chromium, which is a primary component in the chromating process, is a confirmed carcinogen. Because of rising remediation and disposal costs caused by increasingly strict regulations, the replacement of the traditional chromate conversion process is becoming a top priority in the metal finishing industry. This research focused on the electrodeposition of cerium-based coatings on 7075-T6 aluminum alloy in an electrolyte containing a cerium salt, an oxidizing agent and an organic solvent. The cerium-rich deposits were characterized by phase composition, oxidation state, coating thickness, surface morphology, deposition mechanism and polarization behavior. Chemical and electrochemical tests were utilized to compare the corrosion resistance between cerium-based coatings and chromate conversion coatings. To characterize and simulate the deposition process, a variety of approaches were utilized to study the oxidation states of cerium in various soluble and precipitated forms as a function of hydrogen peroxide and electrolyte pH. The pH ranges where the oxidation and reduction reactions dominate were determined. Further studies were performed to optimize the corrosion performance of cerium-based coatings and to understand the effects of electrolyte constituents and deposition parameters. The optimum levels for these variables were identified. A patent disclosure on the cerium-based coating process was made to the University of Missouri-Rolla and has now been officially filed with the U.S. Patent Office.

  9. Influence of cerium additions on high-temperature-impact ductility and fracture behavior of iridium alloys

    SciTech Connect

    Gubbi, A.N.; Zee, R.H.; George, E.P.; Ohriner, E.K.

    1997-10-01

    Radioisotope thermoelectric generators (RTGs), used for supplying electric power to interplanetary space missions, utilize the energy liberated due to decay of the radioisotope fuel. The material used for cladding the fuel pellets is an iridium-based alloy developed at Oak Ridge National Laboratory, which contains nominally 0.3 wt pct W, 60 wppm Th, and 50 wppm Al, generally known as DOP-26. High-temperature tensile impact testing was carried out on Ir + 0.3 wt pct W alloys doped with cerium and thorium individually, and with cerium and thorium together. Impact ductility was evaluated as a function of grain size and test temperature. Cerium by itself was not as effective as thorium in improving the grain boundary cohesion, even though it segregated more strongly than thorium to the grain boundaries. This lower grain boundary cohesion was responsible for lower impact ductility and higher brittle-to-ductile transition temperature of cerium-doped alloys compared to those of the thorium- or thorium plus cerium-doped alloys. Reduction in thorium content by a factor of 5 (from 50 to 10 appm) in the bulk did not result in any significant reduction in high-temperature impact ductility or an increase in the brittle-to-ductile transition temperature as long as sufficient cerium was added to provide grain refinement. Grain boundary strengths of thorium- and thorium plus cerium-doped alloys were almost identical.

  10. Hydrothermal synthesis of cerium titanate nanorods and its application in visible light photocatalysis

    SciTech Connect

    Pei, L.Z. Liu, H.D.; Lin, N.; Yu, H.Y.

    2015-01-15

    Highlights: • Cerium titanate nanorods have been synthesized by a simple hydrothermal process. • The size of the cerium titanate nanorods can be controlled by growth conditions. • Cerium titanate nanorods exhibit good photocatalytic activities for methyl blue. - Abstract: Cerium titanate nanorods have been prepared via a hydrothermal process using sodium dodecyl sulfate (SDS) as the surfactant. The cerium titanate nanorods have been analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), and ultraviolet–visible (UV–vis) diffuse reflectance spectrum. XRD shows that the nanorods are composed of CeTi{sub 21}O{sub 38} phase. Electron microscopy observations indicate that the nanorods have good single crystalline nature. The diameter and length of the nanorods are about 50–200 nm and 1–2 μm, respectively. Cerium titanate nanorods have a band gap of 2.65 eV. The photocatalytic activities of the nanorods have been investigated by degrading methylene blue (MB) under visible light irradiation. MB solution with the concentration of 10 mg L{sup −1} can be degraded totally with the irradiation time increasing to 240 min. Cerium titanate nanorods exhibit great potential in photocatalytic degradation of MB under visible light irradiation.

  11. Incorporation of Cerium and Neodymium in Uranyl Phases

    SciTech Connect

    Kim, C W.; Wronkiewicz, David J.; Finch, R J.; Buck, Edgar C.

    2006-07-15

    The potential for incorporating rare earth elements (REE) into/onto crystalline compounds has been evaluated by precipitating uranyl phases from aqueous solutions containing either cerium or neodymium. These REEs serve both as monitors for evaluating the potential repository behavior of REE radionuclides, and as surrogate elements for actinides (e.g., Ce4 and Nd3 for Pu4 and Am3, respectively). The present experiments examined the behavior of REE in the presence of ianthinite Formula Not Shown, becquerelite (Ca(UO2)6O4(OH)6(H2O)8), and other uranyl hydroxide compounds commonly noted as alteration products during the corrosion of UO2, spent nuclear fuel, and naturally occurring uraninite. The results of these experiments demonstrate that significant quantities of both cerium (Kd=1020) and neodymium (Kd=840) are incorporated within the uranium alteration phases and suggest that ionic substitution and/or adsorption to the uranyl phases can play a key role in the limiting the mobility of REE (and by analogy, actinide elements) in a nuclear waste repository.

  12. Altering properties of cerium oxide thin films by Rh doping

    SciTech Connect

    Ševčíková, Klára; Nehasil, Václav; Vorokhta, Mykhailo; Haviar, Stanislav; Matolín, Vladimír; and others

    2015-07-15

    Highlights: • Thin films of ceria doped by rhodium deposited by RF magnetron sputtering. • Concentration of rhodium has great impact on properties of Rh–CeO{sub x} thin films. • Intensive oxygen migration in films with low concentration of rhodium. • Oxygen migration suppressed in films with high amount of Rh dopants. - Abstract: Ceria containing highly dispersed ions of rhodium is a promising material for catalytic applications. The Rh–CeO{sub x} thin films with different concentrations of rhodium were deposited by RF magnetron sputtering and were studied by soft and hard X-ray photoelectron spectroscopies, Temperature programmed reaction and X-ray powder diffraction techniques. The sputtered films consist of rhodium–cerium mixed oxide where cerium exhibits a mixed valency of Ce{sup 4+} and Ce{sup 3+} and rhodium occurs in two oxidation states, Rh{sup 3+} and Rh{sup n+}. We show that the concentration of rhodium has a great influence on the chemical composition, structure and reducibility of the Rh–CeO{sub x} thin films. The films with low concentrations of rhodium are polycrystalline, while the films with higher amount of Rh dopants are amorphous. The morphology of the films strongly influences the mobility of oxygen in the material. Therefore, varying the concentration of rhodium in Rh–CeO{sub x} thin films leads to preparing materials with different properties.

  13. Cerium Tetrafluoride: Sublimation, Thermolysis, and Atomic Fluorine Migration.

    PubMed

    Chilingarov, N S; Knot'ko, A V; Shlyapnikov, I M; Mazej, Z; Kristl, M; Sidorov, L N

    2015-08-01

    Saturated vapor pressure p° and enthalpy of sublimation (ΔsH°) of cerium tetrafluoride CeF4 were determined by means of Knudsen effusion mass spectrometry in the range of 750-920 K. It was discovered that sublimation of cerium tetrafluoride from a platinum effusion cell competes with thermal decomposition to CeF3 in the solid phase, but no accompanying release of fluorine to the gas phase occurs. Thus, fluorine atoms migrate within the surface layer of CeF4(s) to the regions of their irreversible drain. We used scanning electron microscopy to study the distribution of the residual CeF3(s) across the inner surface of the effusion cell after complete evaporation of CeF4(s). It was observed that CeF3 accumulates near the edge of the effusion orifice and near the junction of the lid and the body of the cell, that is, in those regions where the fluorine atoms can migrate to a free platinum surface and thus be depleted from the system. Distribution of CeF3(s) solid particles indicates the ways of fluorine atoms migration providing CeF3(s) formation inside the CeF4(s) surface layer. PMID:26165149

  14. Synthesis of cerium rich intermetallics using molten metal eutectics

    NASA Astrophysics Data System (ADS)

    Tucker, Patricia Christine

    Metal eutectic fluxes are useful for exploratory synthesis of new intermetallic phases. In this work the use of cerium/transition metal eutectics such as: Ce/Co, Ce/Ni, and Ce/Fe have yielded many new synthetically and magnetically complex phases. Structural units that were previously observed in phases grown in La/Ni eutectic reactions have also been observed in new structures and analogs grown from cerium/transition metal eutectics. These structural units include a main group element coordinated by 9 rare-earth atoms (such as the Al Ce9 clusters seen in Ce31.0(2)Fe11.8(5)Al6.5(6) B13C4), trigonal planar FeC3 units (also seen in Ce31.0(2)Fe11.8(5)Al6.5(6)B 13C4), iron clusters capped by light elements (Fe4C 6 frustrated tetrahedral in Ce21Fe8M7C 14, and larger Fe clusters in Ce33Fe14B25 C34). Variants of these building blocks were observed in Ce10Co2B7C16 with square Co units and chains of B and C connected to them, Fe2C8 units observed in Ce7Fe2C9, and FeC4 observed in Ce4FeGa0.85Al0.15C4 and Ce4FeAlC4. Two new phases were grown from Ce/Fe eutectic, Ce33Fe 14B25C34 and Ce33Fe13B 18C34 which exhibits very similar structures, but significantly different magnetic behavior. Structurally these two phases are similar. Both crystallize in the Im-3m space group, but differ by the centering of the Fe clusters. Ce33Fe14B25C34 contains Fe clusters centered by B atoms and Al doped on the Fe2 site. In Ce33Fe13B18C34, the Fe cluster is a perfect cuboctahedron. Ce33Fe14B25 C34 exhibits mixed valent behavior of cerium at 75K and no magnetic moment on iron, where-as Ce33Fe13B18C 34 exhibits tetravalent cerium and its iron clusters undergo a ferromagnetic transition at 180K. Another borocarbide, Ce10Co2B7C 16 was synthesized from Ce/Co eutectic flux. This structure features squares of Co surrounded by chains of C and B and a sea of cerium atoms. Temperature dependent magnetic susceptibility measurements at 1 Tesla were fit to a modified Curie-Weiss law and a moment per Ce was

  15. [Ion chromatography of L-ascorbic acid, sulfite and thiosulfate using their postcolumn reactions with cerium (IV) and fluorescence detection of cerium (III)].

    PubMed

    Chen, Q; Hu, K; Miura, Y

    1999-09-01

    An ion chromatographic method was used to separate the species of L-ascorbic acid, sulfite and thiosulfate in their mixtures. This method is based on the separation of each anion in their mixtures by using a separation column, and then on the fluorimetric measurement of cerium (III) formed by a postcolumn reaction of cerium (IV) with the species of L-ascorbic acid, sulfite and thiosulfate in the effluent. The optimal conditions for separating and determining the above three species have been established. By using a 3 mmol/L carbonate eluent, the species of L-ascorbic acid, sulfite and thiosulfate could be eluted at the proper retention times of 1.7, 2.6 and 5.0 min, respectively, and these three anions could be separated completely. The effects of the concentrations of cerium (IV) and sulfuric acid in the postcolumn reaction solution on the chromatographic peak-height were tested in order to obtain the optimal peak-height. It was found that the peak-height at first increases rapidly with an increase in the concentration of cerium (IV) and sulfuric acid respectively up to a certain concertation, then increases slowly. These critical concentrations of cerium (IV) and sulfuric acid also depend on the amount of the analyte injected. Meanwhile the baseline signals of the sepectra increase with an increase in the concentration of cerium (IV). Some concentrations above the critical concentration of sulfuric acid could be selected as the optimal concentration of sulfuric acid, but the concentration of cerium (IV) should be optimized by establishing a compromise between the higher peak-height and the lower baseline signal. The detection limit of this method was found to be 1 mumol/L for thiosulfate when an amount of 100 microL analyte was injected. PMID:12552889

  16. Structural, topographical and electrical properties of cerium doped strontium barium niobate (Ce:SBN60) ceramics

    NASA Astrophysics Data System (ADS)

    Raj, S. Gokul; Mathivanan, V.; Kumar, G. Ramesh; Yathavan, S.; Mohan, R.

    2016-05-01

    Tungsten bronze type cerium doped strontium barium niobate (Ce:SBN - Sr0.6B0.4Nb2O6) ceramics were synthesized by solid state process. Cerium was used as dopant to improve its electrical properties. Influence of Ce+ ions on the photoluminescence properties was investigated in detail. The grain size topographical behavior of SBN powders and their associated abnormal grain growth (AGG) were completely analyzed through SEM studies. Finally dielectric, measurement discusses about the broad phase transition observed due to cerium dopant The results were discussed in detail.

  17. Cerium-Based Magnets: Novel High Energy Permanent Magnet Without Critical Elements

    SciTech Connect

    2012-01-01

    REACT Project: Ames Laboratory will develop a new class of permanent magnets based on the more commonly available element cerium for use in both EVs and renewable power generators. Cerium is 4 times more abundant and significantly less expensive than the rare earth element neodymium, which is frequently used in today’s most powerful magnets. Ames Laboratory will combine other metal elements with cerium to create a new magnet that can remain stable at the high temperatures typically found in electric motors. This new magnetic material will ultimately be demonstrated in a prototype electric motor, representing a cost-effective and efficient alternative to neodymium-based motors.

  18. 27. INTERIOR VIEW TO THE WEST OF ROOM 126 AT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    27. INTERIOR VIEW TO THE WEST OF ROOM 126 AT THE NORTH END OF THE ENTRANCE HALLWAY TO THE POST-MORTEM CELLS. IN THE CEILING IS A HATCHWAY TO THE UPPER LEVEL OF ROOM 123, THE DISASSEMBLY BAY, BY WHICH PARTS OF THE NUCLEAR REACTOR WERE PASSED FOR FURTHER DISASSEMBLY IN THE VARIOUS POST-MORTEM CELLS. - Nevada Test Site, Reactor Maintenance Assembly & Dissassembly Facility, Area 25, Jackass Flats, Junction of Roads F & G, Mercury, Nye County, NV

  19. 27 CFR 46.126 - Change in name or address.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2013-04-01 2013-04-01 false Change in name or address... (occupational) Tax Stamps § 46.126 Change in name or address. (a) Change in name. If there is a change in the corporate or firm name, or in the trade name, as shown on TTB Form 5630.5t, the taxpayer must file...

  20. 27 CFR 46.126 - Change in name or address.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2012-04-01 2011-04-01 true Change in name or address... (occupational) Tax Stamps § 46.126 Change in name or address. (a) Change in name. If there is a change in the corporate or firm name, or in the trade name, as shown on TTB Form 5630.5t, the taxpayer must file...

  1. 27 CFR 46.126 - Change in name or address.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 2 2014-04-01 2014-04-01 false Change in name or address... (occupational) Tax Stamps § 46.126 Change in name or address. (a) Change in name. If there is a change in the corporate or firm name, or in the trade name, as shown on TTB Form 5630.5t, the taxpayer must file...

  2. 126. Moses H. Cone Memorial Park. View of barbed wire ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. Moses H. Cone Memorial Park. View of barbed wire fence along carriage trail with a concrete box culvert for the carriage trail in the background. It is the only culvert on the parkway with stone veneer finished with a roman arch. It was constructed in 1960. Looking south-southeast. - Blue Ridge Parkway, Between Shenandoah National Park & Great Smoky Mountains, Asheville, Buncombe County, NC

  3. 13 CFR 126.501 - What are a qualified HUBZone SBC's ongoing obligations to SBA?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... affect its eligibility. Material change includes, but is not limited to, a change in the ownership... pursuant to § 126.504. In addition, SBA may seek the imposition of penalties under § 126.900. If...

  4. Correction: Single-molecule magnet behaviour in polynuclear assembly of trivalent cerium ions with polyoxomolybdates.

    PubMed

    Khélifa, A Ben; Belkhiria, M Salah; Huang, G; Freslon, S; Guillou, O; Bernot, K

    2016-06-01

    Correction for 'Single-molecule magnet behaviour in polynuclear assembly of trivalent cerium ions with polyoxomolybdates' by A. Ben Khélifa, et al., Dalton Trans., 2015, 44, 16458-16464. PMID:27161299

  5. Recent advances (2010-2015) in studies of cerium oxide nanoparticles' health effects.

    PubMed

    Li, Yan; Li, Peng; Yu, Hua; Bian, Ying

    2016-06-01

    Cerium oxide nanoparticles, widespread applied in our life, have attracted much concern for their human health effects. However, most of the works addressing cerium oxide nanoparticles toxicity have only used in vitro models or in vivo intratracheal instillation methods. The toxicity studies have varied results and not all are conclusive. The information about risk assessments derived from epidemiology studies is severely lacking. The knowledge of occupational safety and health (OSH) for exposed workers is very little. Thus this review focuses on recent advances in studies of toxicokinetics, antioxidant activity and toxicity. Additionally, aim to extend previous health effects assessments of cerium oxide nanoparticles, we summarize the epidemiology studies of engineered cerium oxide nanoparticles used as automotive diesel fuel additive, aerosol particulate matter in air pollution, other industrial ultrafine and nanoparticles (e.g., fumes particles generated in welding and flame cutting processes). PMID:27088851

  6. Direct growth of cerium oxide nanorods on diverse substrates for superhydrophobicity and corrosion resistance

    NASA Astrophysics Data System (ADS)

    Cho, Young Jun; Jang, Hanmin; Lee, Kwan-Soo; Kim, Dong Rip

    2015-06-01

    Superhydrophobic surfaces with anti-corrosion properties have attracted great interest in many industrial fields, particularly to enhance the thermal performance of offshore applications such as heat exchangers, pipelines, power plants, and platform structures. Nanostructures with hydrophobic materials have been widely utilized to realize superhydrophobicity of surfaces, and cerium oxide has been highlighted due to its good corrosion resistive and intrinsically hydrophobic properties. However, few studies of direct growth of cerium oxide nanostructures on diverse substrates have been reported. Herein we report a facile hydrothermal method to directly grow cerium oxide nanorods on diverse substrates, such as aluminum alloy, stainless steel, titanium, and silicon. Diverse substrates with cerium oxide nanorods exhibited superhydrophobicity with no hydrophobic modifiers on their surfaces, and showed good corrosion resistive properties in corrosive medium. We believe our method could pave the way for realization of scalable and sustainable corrosion resistive superhydrophobic surfaces in many industrial fields.

  7. Immobilization of simulated radioactive soil waste containing cerium by self-propagating high-temperature synthesis

    NASA Astrophysics Data System (ADS)

    Mao, Xianhe; Qin, Zhigui; Yuan, Xiaoning; Wang, Chunming; Cai, Xinan; Zhao, Weixia; Zhao, Kang; Yang, Ping; Fan, Xiaoling

    2013-11-01

    A simulated radioactive soil waste containing cerium as an imitator element has been immobilized by a thermite self-propagating high-temperature synthesis (SHS) process. The compositions, structures, and element leaching rates of products with different cerium contents have been characterized. To investigate the influence of iron on the chemical stability of the immobilized products, leaching tests of samples with different iron contents with different leaching solutions were carried out. The results showed that the imitator element cerium mainly forms the crystalline phases CeAl11O18 and Ce2SiO5. The leaching rate of cerium over a period of 28 days was 10-5-10-6 g/(m2 day). Iron in the reactants, the reaction products, and the environment has no significant effect on the chemical stability of the immobilized SHS products.

  8. Inhaled Diesel Emissions Generated with Cerium Oxide Nanoparticle Fuel Additive Induce Adverse Pulmonary and Systemic Effects

    EPA Science Inventory

    Diesel exhaust (DE) exposure induces adverse cardiopulmonary effects. Cerium oxide nanoparticles added to diesel fuel (DECe) increases fuel burning efficiency but leads to altered emission characteristics and potentially altered health effects. Here, we evaluated whether DECe res...

  9. Interaction of Perchloroethylene with Cerium Oxide in Three-Way Catalysts

    PubMed Central

    Rupp, Erik C.; Betterton, Eric A.; Arnold, Robert G.

    2010-01-01

    The role of cerium oxide on direct oxidation of perchloroethylene (PCE) by a three-way catalyst was explored. In the absence of an external oxidizing agent, PCE was oxidized over an alumina supported Pt/Rh three-way catalyst. We hypothesize that the chlorine atoms in the adsorbed PCE interact with oxygen in CeO2, reducing the cerium to create CeCl3. PMID:21218178

  10. Construction of heterocyclic structures by trivalent cerium salts promoted bond forming reactions.

    PubMed

    Properzi, Roberta; Marcantoni, Enrico

    2014-02-01

    Cerium(III) salts have recently gained increasing attention in the synthetic community, owing to the powerful features that are reviewed in detail in this tutorial. This review reports significant examples of cerium(III) promoted synthesis of heterocyclic structures, initially dealing with the synthesis of five- and six-membered ring nitrogen containing heterocycles, then describing the preparation of their oxygenated analogues and finally discussing the achievement of seven-membered rings and mixed heterocyclic motifs. PMID:24217370

  11. Enhanced electrochromism in cerium doped molybdenum oxide thin films

    SciTech Connect

    Dhanasankar, M.; Purushothaman, K.K.; Muralidharan, G.

    2010-12-15

    Cerium (5-15% by weight) doped molybdenum oxide thin films have been prepared on FTO coated glass substrate at 250 {sup o}C using sol-gel dip coating method. The structural and morphological changes were observed with the help of XRD, SEM and EDS analysis. The amorphous structure of the Ce doped samples, favours easy intercalation and deintercalation processes. Mo oxide films with 10 wt.% of Ce exhibit maximum anodic diffusion coefficient of 24.99 x 10{sup -11} cm{sup 2}/s and the change in optical transmittance of ({Delta}T at 550 nm) of 79.28% between coloured and bleached state with the optical density of ({Delta}OD) 1.15.

  12. Interplay of spin-orbit and entropic effects in cerium

    SciTech Connect

    Lanata, Nicola; Yao, Yong-Xin; Wang, Cai-Zhuang; Ho, Kai-Ming; Kotliar, Gabriel

    2014-10-01

    We perform first-principles calculations of elemental cerium and compute its pressure-temperature phase diagram, finding good quantitative agreement with the experiments. Our calculations indicate that, while a signature of the volume-collapse transition appears in the free energy already at low temperatures, at higher temperatures this signature is enhanced because of the entropic effects, and originates an actual thermodynamical instability. Furthermore, we find that the catalyst determining this feature is—in all temperature regimes—a pressure-induced effective reduction of the f-level degeneracy due to the spin-orbit coupling. Our analysis suggests also that the lattice vibrations might be crucial in order to capture the behavior of the pressure-temperature transition line at large temperatures.

  13. Structure and Electronic Properties of Cerium Orthophosphate: Theory and Experiment

    SciTech Connect

    Adelstein, Nicole; Mun, B. Simon; Ray, Hannah; Ross Jr, Phillip; Neaton, Jeffrey; De Jonghe, Lutgard

    2010-07-27

    Structural and electronic properties of cerium orthophosphate (CePO{sub 4}) are calculated using density functional theory (DFT) with the local spin-density approximation (LSDA+U), with and without gradient corrections (GGA-(PBE)+U), and compared to X-ray diffraction and photoemission spectroscopy measurements. The density of states is found to change significantly as the Hubbard parameter U, which is applied to the Ce 4f states, is varied from 0 to 5 eV. The calculated structural properties are in good agreement with experiment and do not change significantly with U. Choosing U = 3 eV for LDSA provides the best agreement between the calculated density of states and the experimental photoemission spectra.

  14. Growth of transition metals on cerium tungstate model catalyst layers.

    PubMed

    Skála, T; Tsud, N; Stetsovych, V; Mysliveček, J; Matolín, V

    2016-10-01

    Two model catalytic metal/oxide systems were investigated by photoelectron spectroscopy and scanning tunneling microscopy. The mixed-oxide support was a cerium tungstate epitaxial thin layer grown in situ on the W(1 1 0) single crystal. Active particles consisted of palladium and platinum 3D islands deposited on the tungstate surface at 300 K. Both metals were found to interact weakly with the oxide support and the original chemical state of both support and metals was mostly preserved. Electronic and morphological changes are discussed during the metal growth and after post-annealing at temperatures up to 700 K. Partial transition-metal coalescence and self-cleaning from the CO and carbon impurities were observed. PMID:27494195

  15. Static and dynamic high pressure experiments on cerium

    SciTech Connect

    Jensen, Brian J; Velisavljevic, Nenad; Cherne, Frank J; Stevens, Gerald; Tschauner, Oliver

    2011-01-25

    There is a scientific need to obtain dynamic data to develop and validate multi phase equation-of-state (EOS) models for metals. Experiments are needed to examine the relevant pure phases, to locate phase boundaries and the associated transition kinetics, and other material properties such as strength. Cerium is an ideal material for such work because it exhibits a complex multiphase diagram at relatively moderate pressures readily accessible using standard shock wave methods. In the current work, shock wave (dynamic) and diamond anvil cell (static) experiments were performed to examine the high pressure, low temperature region of the phase diagram to obtain EOS data and to search for the {alpha}-{var_epsilon} boundary. Past work examining the shock-melt transition and the low-pressure {gamma}-{alpha} transition will be presented in brief followed by details of recent results obtained from DAC and double-shock experiments.

  16. Theoretical studies of the high pressure phases in cerium

    SciTech Connect

    Wills, J.M.; Eriksson, O.; Boring, A.M. )

    1991-10-14

    We present full potential linear-muffin-tin-orbital calculations based on the local-density approximation, which reproduce the {ital T}=0 phase diagram of cerium (Ce), including the volumes and transition pressures for both the {alpha}{r arrow}{alpha}{prime}, and the {alpha}{prime}{r arrow}bct transitions. The {alpha}{r arrow}{alpha}{prime} transition is largely determined by a balance of two competing terms: a Madelung term and a 4{ital f} one-electron term. The {alpha}{prime}{r arrow}bct transition is driven by both 4{ital f} and 5{ital d} partial-wave contributions. This is the first successful, {ital ab} {ital initio} calculation of a crystallographic ({ital T}=0) phase diagram of an {ital f}-electron system.

  17. Deposition and investigation of lanthanum cerium hexaboride thin films

    NASA Astrophysics Data System (ADS)

    Kuzanyan, A. S.; Harutyunyan, S. R.; Vardanyan, V. O.; Badalyan, G. R.; Petrosyan, V. A.; Kuzanyan, V. S.; Petrosyan, S. I.; Karapetyan, V. E.; Wood, K. S.; Wu, H.-D.; Gulian, A. M.

    2006-09-01

    Thin films of lanthanum-cerium hexaboride, the promising thermoelectric material for low-temperature applications, are deposited on various substrates by the electron-beam evaporation, pulsed laser deposition and magnetron sputtering. The influence of the deposition conditions on the films X-ray characteristics, composition, microstructure and physical properties, such as the resistivity and Seebeck coefficient, is studied. The preferred (100) orientation of all films is obtained from XRD traces. In the range of 780-800 °C deposition temperature the highest intensity of diffractions peaks and the highest degree of the preferred orientation are observed. The temperature dependence of the resistivity and the Seebeck coefficient of films are investigated in the temperature range of 4-300 K. The features appropriate to Kondo effect in the dependences ρ( T) and S( T) are detected at temperatures below 20 K. Interplay between the value of the Seebeck coefficient, metallic parameters and Kondo scattering of investigated films is discussed.

  18. A tetravalent cerium complex containing a Ce=O bond.

    PubMed

    So, Yat-Ming; Wang, Guo-Cang; Li, Yang; Sung, Herman H-Y; Williams, Ian D; Lin, Zhenyang; Leung, Wa-Hung

    2014-02-01

    Whereas terminal oxo complexes of transition and actinide elements are well documented, analogous lanthanide complexes have not been reported to date. Herein, we report the synthesis and structure of a cerium(IV) oxo complex, [CeO(LOEt )2 (H2 O)]⋅MeC(O)NH2 (1; LOEt (-) =[Co(η(5) -C5 H5 ){P(O)(OEt)2 }3 ](-) ), featuring a short CeO bond (1.857(3) Å). DFT calculations indicate that the hydrogen bond to cocrystallized acetamide plays a key role in stabilizing the CeO moiety of 1 in the solid state. Complex 1 exhibits oxidizing and nucleophilic reactivity. PMID:24403106

  19. EPDM composite membranes modified with cerium doped lead zirconate titanate

    NASA Astrophysics Data System (ADS)

    Zaharescu, T.; Dumitru, A.; Lungulescu, M. E.; Velciu, G.

    2016-01-01

    This study was performed on γ-irradiated ethylene-propylene diene terpolymer (EPDM) loaded with lead zirconate titanate. The inorganic phase has a perovskite structure with general formula Pb(Zr0.65-xCexTi0.35)O3. The three composites with different Ce dopant concentrations revealed the stabilization activity of filler against oxidation proved by chemiluminescence investigation in respect to pristine polymer. The presence of cerium low concentrations in the solid lead zirconate titanate nanoparticles causes significant slowing of oxidation rate during radiation exposure. The improvement in the stabilization feature of filler is correlated with the existence of traps, whose interaction with free radicals assumes medium energy due to their convenient depth.

  20. An Alkali Metal-Capped Cerium(IV) Imido Complex.

    PubMed

    Solola, Lukman A; Zabula, Alexander V; Dorfner, Walter L; Manor, Brian C; Carroll, Patrick J; Schelter, Eric J

    2016-06-01

    Structurally authenticated, terminal lanthanide-ligand multiple bonds are rare and expected to be highly reactive. Even capped with an alkali metal cation, poor orbital energy matching and overlap of metal and ligand valence orbitals should result in strong charge polarization within such bonds. We expand on a new strategy for isolating terminal lanthanide-ligand multiple bonds using cerium(IV) complexes. In the current case, our tailored tris(hydroxylaminato) ligand framework, TriNOx(3-), provides steric protection against ligand scrambling and metal complex oligomerization and electronic protection against reduction. This strategy culminates in isolation of the first formal Ce═N bonded moiety in the complex [K(DME)2][Ce═N(3,5-(CF3)2C6H3)(TriNOx)], whose Ce═N bond is the shortest known at 2.119(3) Å. PMID:27163651

  1. 13 CFR 126.307 - Where will SBA maintain the List of qualified HUBZone SBCs?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Where will SBA maintain the List of qualified HUBZone SBCs? 126.307 Section 126.307 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Certification § 126.307 Where will SBA maintain the List of qualified HUBZone SBCs? Qualified HUBZone SBCs are...

  2. 33 CFR 126.11 - Waiver authority based on local or unusual conditions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Waiver authority based on local or unusual conditions. 126.11 Section 126.11 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.11 Waiver authority based on...

  3. 33 CFR 126.11 - Waiver authority based on local or unusual conditions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Waiver authority based on local or unusual conditions. 126.11 Section 126.11 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.11 Waiver authority based on...

  4. 33 CFR 126.11 - Waiver authority based on local or unusual conditions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Waiver authority based on local or unusual conditions. 126.11 Section 126.11 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.11 Waiver authority based on...

  5. 33 CFR 126.11 - Waiver authority based on local or unusual conditions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Waiver authority based on local or unusual conditions. 126.11 Section 126.11 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.11 Waiver authority based on...

  6. 13 CFR 126.701 - Can these subcontracting percentages requirements change?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Can these subcontracting percentages requirements change? 126.701 Section 126.701 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Contract Performance Requirements § 126.701 Can these subcontracting...

  7. 9 CFR 2.126 - Access and inspection of records and property.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 1 2011-01-01 2011-01-01 false Access and inspection of records and property. 2.126 Section 2.126 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE ANIMAL WELFARE REGULATIONS Miscellaneous § 2.126 Access and inspection of...

  8. 9 CFR 2.126 - Access and inspection of records and property.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 1 2010-01-01 2010-01-01 false Access and inspection of records and property. 2.126 Section 2.126 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE ANIMAL WELFARE REGULATIONS Miscellaneous § 2.126 Access and inspection of...

  9. 10 CFR 429.126 - Administrative law judge hearing and appeal.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 3 2014-01-01 2014-01-01 false Administrative law judge hearing and appeal. 429.126 Section 429.126 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT Enforcement § 429.126 Administrative...

  10. 10 CFR 429.126 - Administrative law judge hearing and appeal.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 3 2013-01-01 2013-01-01 false Administrative law judge hearing and appeal. 429.126 Section 429.126 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT Enforcement § 429.126 Administrative...

  11. 10 CFR 429.126 - Administrative law judge hearing and appeal.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 3 2012-01-01 2012-01-01 false Administrative law judge hearing and appeal. 429.126 Section 429.126 Energy DEPARTMENT OF ENERGY ENERGY CONSERVATION CERTIFICATION, COMPLIANCE, AND ENFORCEMENT FOR CONSUMER PRODUCTS AND COMMERCIAL AND INDUSTRIAL EQUIPMENT Enforcement § 429.126 Administrative...

  12. View of the cinder block milking barn (UT126D) and attached ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of the cinder block milking barn (UT-126-D) and attached livestock barn (UT-126-B) with large barn (UT-126-A) in the foreground, looking east-northeast - Thomas Powers Ranch, Milking Barn, 4137 North Highway 224, Snyderville, Summit County, UT

  13. 22 CFR 126.11 - Relations to other provisions of law.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Relations to other provisions of law. 126.11 Section 126.11 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.11 Relations to other provisions of law. The provisions in this...

  14. 17 CFR 1.26 - Deposit of instruments purchased with customer funds.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... purchased with customer funds. 1.26 Section 1.26 Commodity and Securities Exchanges COMMODITY FUTURES... Property § 1.26 Deposit of instruments purchased with customer funds. (a) Each futures commission merchant who invests customer funds in instruments described in § 1.25 shall separately account for...

  15. 13 CFR 126.900 - What penalties may be imposed under this part?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What penalties may be imposed under this part? 126.900 Section 126.900 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Penalties § 126.900 What penalties may be imposed under this part? (a) Suspension or debarment. The Agency debarring official...

  16. 13 CFR 126.803 - How will SBA process a HUBZone status protest?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How will SBA process a HUBZone status protest? 126.803 Section 126.803 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Protests § 126.803 How will SBA process a HUBZone status protest? (a) Notice of receipt of protest. (1) SBA immediately will notify...

  17. 22 CFR 126.1 - Prohibited exports, imports, and sales to or from certain countries.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Prohibited exports, imports, and sales to or from certain countries. 126.1 Section 126.1 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.1 Prohibited exports, imports, and sales to or from certain countries. (a) General. It...

  18. 22 CFR 126.1 - Prohibited exports, imports, and sales to or from certain countries.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... United States Munitions List (22 CFR part 121), irrespective of origin, are prohibited under the ITAR for... Register citations affecting § 126.1, see the List of CFR Sections Affected, which appears in the Finding... from certain countries. 126.1 Section 126.1 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL...

  19. 12 CFR 225.126 - Activities not closely related to banking.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 12 Banks and Banking 3 2011-01-01 2011-01-01 false Activities not closely related to banking. 225.126 Section 225.126 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE... Financial Holding Companies Interpretations § 225.126 Activities not closely related to banking. Pursuant...

  20. 13 CFR 126.611 - What is the process for such an appeal?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What is the process for such an appeal? 126.611 Section 126.611 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Contractual Assistance § 126.611 What is the process for such an appeal? (a) Notice of...

  1. 13 CFR 126.306 - How will SBA process the certification?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false How will SBA process the certification? 126.306 Section 126.306 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Certification § 126.306 How will SBA process the certification? (a) The D/HUB or designee...

  2. 13 CFR 126.611 - What is the process for such an appeal?

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 13 Business Credit and Assistance 1 2011-01-01 2011-01-01 false What is the process for such an appeal? 126.611 Section 126.611 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Contractual Assistance § 126.611 What is the process for such an appeal? (a) Notice of...

  3. 13 CFR 126.306 - How will SBA process the certification?

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 13 Business Credit and Assistance 1 2011-01-01 2011-01-01 false How will SBA process the certification? 126.306 Section 126.306 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Certification § 126.306 How will SBA process the certification? (a) The D/HUB or designee...

  4. 13 CFR 126.202 - Who does SBA consider to control a HUBZone SBC?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 13 Business Credit and Assistance 1 2014-01-01 2014-01-01 false Who does SBA consider to control a HUBZone SBC? 126.202 Section 126.202 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Requirements to be a Qualified HUBZone SBC § 126.202 Who does SBA consider to control a HUBZone SBC? Control means both the...

  5. 13 CFR 126.303 - Where must a concern submit its application and certification?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Where must a concern submit its application and certification? 126.303 Section 126.303 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Certification § 126.303 Where must a concern submit its application and certification? A concern seeking...

  6. 27 CFR 24.126 - Change in proprietorship involving a bonded wine warehouse.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... involving a bonded wine warehouse. 24.126 Section 24.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS WINE Establishment and Operations Changes Subsequent to Original Establishment § 24.126 Change in proprietorship involving a bonded wine...

  7. 33 CFR 126.30 - What are the conditions for conducting welding and hotwork?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... conducting welding and hotwork? 126.30 Section 126.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... FACILITIES § 126.30 What are the conditions for conducting welding and hotwork? (a) The facility operator must ensure that all welding or hotwork conducted at the facility meets the requirements of...

  8. 33 CFR 126.30 - What are the conditions for conducting welding and hotwork?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... conducting welding and hotwork? 126.30 Section 126.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... FACILITIES § 126.30 What are the conditions for conducting welding and hotwork? (a) The facility operator must ensure that all welding or hotwork conducted at the facility meets the requirements of...

  9. 33 CFR 126.30 - What are the conditions for conducting welding and hotwork?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... conducting welding and hotwork? 126.30 Section 126.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... FACILITIES § 126.30 What are the conditions for conducting welding and hotwork? (a) The facility operator must ensure that all welding or hotwork conducted at the facility meets the requirements of...

  10. 33 CFR 126.30 - What are the conditions for conducting welding and hotwork?

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... conducting welding and hotwork? 126.30 Section 126.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... FACILITIES § 126.30 What are the conditions for conducting welding and hotwork? (a) The facility operator must ensure that all welding or hotwork conducted at the facility meets the requirements of...

  11. 33 CFR 126.30 - What are the conditions for conducting welding and hotwork?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... conducting welding and hotwork? 126.30 Section 126.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... FACILITIES § 126.30 What are the conditions for conducting welding and hotwork? (a) The facility operator must ensure that all welding or hotwork conducted at the facility meets the requirements of...

  12. 13 CFR 126.401 - What is a program examination and what will SBA examine?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false What is a program examination and what will SBA examine? 126.401 Section 126.401 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Program Examinations § 126.401 What is a program examination and what will SBA examine? (a) General. A program examination...

  13. 26 CFR 16A.126-1 - Certain cost-sharing payments-in general.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... and the excludable portion that applies, if any. (d) Payments under watershed programs—(1) Programs within section 126(a)(9). Section 126(a)(9) covers certain programs affecting small watersheds. These... determined that section 126 improvements made in connection with small watersheds are within the scope...

  14. 26 CFR 16A.126-1 - Certain cost-sharing payments-in general.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... and the excludable portion that applies, if any. (d) Payments under watershed programs—(1) Programs within section 126(a)(9). Section 126(a)(9) covers certain programs affecting small watersheds. These... determined that section 126 improvements made in connection with small watersheds are within the scope...

  15. 7 CFR 1.26 - Representation before the Department of Agriculture.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 1 2011-01-01 2011-01-01 false Representation before the Department of Agriculture. 1.26 Section 1.26 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Departmental Proceedings § 1.26 Representation before the Department of Agriculture. (a) Applicability....

  16. 7 CFR 1.26 - Representation before the Department of Agriculture.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 1 2014-01-01 2014-01-01 false Representation before the Department of Agriculture. 1.26 Section 1.26 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Departmental Proceedings § 1.26 Representation before the Department of Agriculture. (a) Applicability....

  17. 7 CFR 1.26 - Representation before the Department of Agriculture.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 1 2013-01-01 2013-01-01 false Representation before the Department of Agriculture. 1.26 Section 1.26 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Departmental Proceedings § 1.26 Representation before the Department of Agriculture. (a) Applicability....

  18. 7 CFR 1.26 - Representation before the Department of Agriculture.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 1 2012-01-01 2012-01-01 false Representation before the Department of Agriculture. 1.26 Section 1.26 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Departmental Proceedings § 1.26 Representation before the Department of Agriculture. (a) Applicability....

  19. 7 CFR 1.26 - Representation before the Department of Agriculture.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false Representation before the Department of Agriculture. 1.26 Section 1.26 Agriculture Office of the Secretary of Agriculture ADMINISTRATIVE REGULATIONS Departmental Proceedings § 1.26 Representation before the Department of Agriculture. (a) Applicability....

  20. 27 CFR 70.126 - Date of allowance of refund or credit.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... refund or credit. 70.126 Section 70.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX... ADMINISTRATION Collection of Excise and Special (Occupational) Tax Abatements, Credits and Refunds § 70.126 Date of allowance of refund or credit. The date on which the appropriate TTB officer, first certifies...

  1. 27 CFR 70.126 - Date of allowance of refund or credit.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... refund or credit. 70.126 Section 70.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX... ADMINISTRATION Collection of Excise and Special (Occupational) Tax Abatements, Credits and Refunds § 70.126 Date of allowance of refund or credit. The date on which the appropriate TTB officer, first certifies...

  2. 27 CFR 70.126 - Date of allowance of refund or credit.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... refund or credit. 70.126 Section 70.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX... ADMINISTRATION Collection of Excise and Special (Occupational) Tax Abatements, Credits and Refunds § 70.126 Date of allowance of refund or credit. The date on which the appropriate TTB officer, first certifies...

  3. 27 CFR 70.126 - Date of allowance of refund or credit.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... refund or credit. 70.126 Section 70.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX... ADMINISTRATION Collection of Excise and Special (Occupational) Tax Abatements, Credits and Refunds § 70.126 Date of allowance of refund or credit. The date on which the appropriate TTB officer, first certifies...

  4. 27 CFR 70.126 - Date of allowance of refund or credit.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... or credit. 70.126 Section 70.126 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND... ADMINISTRATION Collection of Excise and Special (Occupational) Tax Abatements, Credits and Refunds § 70.126 Date of allowance of refund or credit. The date on which the appropriate TTB officer, first certifies...

  5. 12 CFR 204.126 - Depository institution participation in “Federal funds” market.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Federal fundsâ market. 204.126 Section 204.126 Banks and Banking FEDERAL RESERVE SYSTEM BOARD OF GOVERNORS...) Interpretations § 204.126 Depository institution participation in “Federal funds” market. (a) Under § 204.2(a)(1...: (1) That engage in businesses in which their parents are authorized to engage; or (2) The stock...

  6. 22 CFR 126.2 - Temporary suspension or modification of this subchapter.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Temporary suspension or modification of this subchapter. 126.2 Section 126.2 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.2 Temporary suspension or modification of this...

  7. 22 CFR 126.2 - Temporary suspension or modification of this subchapter.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Temporary suspension or modification of this subchapter. 126.2 Section 126.2 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.2 Temporary suspension or modification of this...

  8. 22 CFR 126.2 - Temporary suspension or modification of this subchapter.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 1 2012-04-01 2012-04-01 false Temporary suspension or modification of this subchapter. 126.2 Section 126.2 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.2 Temporary suspension or modification of this...

  9. 22 CFR 126.2 - Temporary suspension or modification of this subchapter.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false Temporary suspension or modification of this subchapter. 126.2 Section 126.2 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.2 Temporary suspension or modification of this...

  10. 13 CFR 126.303 - Where must a concern submit its application and certification?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 13 Business Credit and Assistance 1 2014-01-01 2014-01-01 false Where must a concern submit its application and certification? 126.303 Section 126.303 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Certification § 126.303 Where must a concern submit its application...

  11. 13 CFR 126.303 - Where must a concern submit its application and certification?

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 13 Business Credit and Assistance 1 2012-01-01 2012-01-01 false Where must a concern submit its application and certification? 126.303 Section 126.303 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Certification § 126.303 Where must a concern submit its application...

  12. 33 CFR 126.15 - What conditions must a designated waterfront facility meet?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false What conditions must a designated waterfront facility meet? 126.15 Section 126.15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) WATERFRONT FACILITIES HANDLING OF DANGEROUS CARGO AT WATERFRONT FACILITIES § 126.15 What conditions must...

  13. 22 CFR 126.11 - Relations to other provisions of law.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 1 2014-04-01 2014-04-01 false Relations to other provisions of law. 126.11 Section 126.11 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.11 Relations to other provisions of law. The provisions in this subchapter are in addition to, and are not in lieu...

  14. 12 CFR 225.126 - Activities not closely related to banking.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 3 2010-01-01 2010-01-01 false Activities not closely related to banking. 225.126 Section 225.126 Banks and Banking FEDERAL RESERVE SYSTEM (CONTINUED) BOARD OF GOVERNORS OF THE... Financial Holding Companies Interpretations § 225.126 Activities not closely related to banking. Pursuant...

  15. 13 CFR 126.603 - Does HUBZone certification guarantee receipt of HUBZone contracts?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 13 Business Credit and Assistance 1 2010-01-01 2010-01-01 false Does HUBZone certification guarantee receipt of HUBZone contracts? 126.603 Section 126.603 Business Credit and Assistance SMALL BUSINESS ADMINISTRATION HUBZONE PROGRAM Contractual Assistance § 126.603 Does HUBZone...

  16. 48 CFR 18.126 - Contractor rent-free use of Government property.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 48 Federal Acquisition Regulations System 1 2014-10-01 2014-10-01 false Contractor rent-free use of Government property. 18.126 Section 18.126 Federal Acquisition Regulations System FEDERAL... Flexibilities 18.126 Contractor rent-free use of Government property. Rental requirements do not apply to...

  17. 22 CFR 126.11 - Relations to other provisions of law.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Relations to other provisions of law. 126.11 Section 126.11 Foreign Relations DEPARTMENT OF STATE INTERNATIONAL TRAFFIC IN ARMS REGULATIONS GENERAL POLICIES AND PROVISIONS § 126.11 Relations to other provisions of law. The provisions in this...

  18. Induction of pulmonary fibrosis by cerium oxide nanoparticles

    PubMed Central

    Ma, Jane Y.; Mercer, Robert R.; Barger, Mark; Schwegler-Berry, Diane; Scabilloni, James; Ma, Joseph K.; Castranova, Vincent

    2015-01-01

    Cerium compounds have been used as a diesel engine catalyst to lower the mass of diesel exhaust particles, but are emitted as cerium oxide (CeO2) nanoparticles in the diesel exhaust. In a previous study, we have demonstrated a wide range of CeO2-induced lung responses including sustained pulmonary inflammation and cellular signaling that could lead to pulmonary fibrosis. In this study, we investigated the fibrogenic responses induced by CeO2 in a rat model at various time points up to 84 days post-exposure. Male Sprague Dawley rats were exposed to CeO2 by a single intratracheal instillation. Alveolar macrophages (AM) were isolated by bronchial alveolar lavage (BAL). AM-mediated cellular responses, osteopontin (OPN) and transform growth factor (TGF)-β1 in the fibrotic process were investigated. The results showed that CeO2 exposure significantly increased fibrotic cytokine TGF-β1 and OPN production by AM above controls. The collagen degradation enzymes, matrix metalloproteinase (MMP)-2 and -9 and the tissue inhibitor of MMP were markedly increased in the BAL fluid at 1 day- and subsequently declined at 28 days after exposure, but remained much higher than the controls. CeO2 induced elevated phospholipids in BAL fluid and increased hydroxyproline content in lung tissue in a dose- and time-dependent manner. Immunohistochemical analysis showed MMP-2, MMP-9 and MMP-10 expressions in fibrotic regions. Morphological analysis noted increased collagen fibers in the lungs exposed to a single dose of 3.5 mg/kg CeO2 and euthanized at 28 days post-exposure. Collectively, our studies show that CeO2 induced fibrotic lung injury in rats, suggesting it may cause potential health effects. PMID:22613087

  19. Synthesis and catalytic properties of microemulsion-derived cerium oxide nanoparticles

    SciTech Connect

    Kockrick, Emanuel; Schrage, Christian; Grigas, Anett; Geiger, Dorin; Kaskel, Stefan

    2008-07-15

    The synthesis of cerium dioxide nanoparticles using an inverse microemulsion technique and precipitation method was investigated. Cerium hydroxide nanoparticles were synthesized by adding diluted ammonia to n-heptane-surfactant-cerium nitrate system. The micelle and particle size in the range of 5-12 nm were controlled by varying the molar water to surfactant ratio and analyzed by dynamic light scattering (DLS), small angle X-ray scattering (SAXS) and high-resolution transmission electron microscopy (HRTEM). Cerium hydroxide nanoparticles were isolated and subsequently treated at 100-600 deg. C to obtain nanoscale ceria. Crystallite sizes of cerium dioxide in the range of 6-16 nm were estimated by Scherrer analysis by X-ray diffraction (XRD) and HRTEM. The catalytic activity of particles annealed at 400 and 600 deg. C in soot combustion reactions was characterized by temperature-programmed oxidation (TPO) indicating a size-dependant activity. Crystallite sizes and catalytic stability of elevated ceria systems were tested in second combustion cycles. - Graphical abstract: The synthesis of cerium dioxide nanoparticles using an inverse microemulsion technique and precipitation method was investigated using small angle X-ray scattering, dynamic light scattering and high-resolution transmission electron microscopy. Catalytic activity of ceria nanoparticles was tested in soot combustion reaction indicating size-dependent reactivity.

  20. Band structures extending to very high spin in Xe126

    NASA Astrophysics Data System (ADS)

    Rønn Hansen, C.; Sletten, G.; Hagemann, G. B.; Herskind, B.; Jensen, D. R.; Bringel, P.; Engelhardt, C.; Hübel, H.; Neußer-Neffgen, A.; Singh, A. K.; Carpenter, M. P.; Janssens, R. V. F.; Khoo, T. L.; Lauritsen, T.; Bednarczyk, P.; Byrski, T.; Curien, D.; Benzoni, G.; Bracco, A.; Camera, F.; Leoni, S.; Clark, R. M.; Fallon, P.; Korichi, A.; Roccaz, J.; Maj, A.; Wilson, J. N.; Lisle, J. C.; Steinhardt, T.; Thelen, O.; Ødegård, S. W.

    2007-09-01

    High-spin states in Xe126 have been populated in the Se82(Ca48,4n)Xe126 reaction in two experiments, one at the VIVITRON accelerator in Strasbourg using the Euroball detector array, and a subsequent one with ATLAS at Argonne using the Gammasphere Ge-detector array. Levels and assignments made previously for Xe126 up to I=20 have been confirmed and extended. Four regular bands extending to a spin of almost I=60, which are interpreted as two pairs of signature partners with opposite parity, are identified for the first time. The α = 0 partner of each pair is connected to the lower-lying levels, whereas the two α = 1 partners remain floating. A fractional Doppler shift analysis of transitions in the strongest populated (π,α)=(-,0) band provides a value of 5.20.50.4 b for the transition quadrupole moment, which can be related to a minimum in the potential-energy surface calculated by the ULTIMATE CRANKER cranked shell-model code at ɛ≈0.35 and γ≈5°. The four lowest bands calculated for this minimum compare well with the two signature pairs experimentally observed over a wide spin range. A sharp upbend at ℏω~1170 keV is interpreted as a crossing with a band involving the j15/2 neutron orbital, for which pairing correlations are expected to be totally quenched. The four long bands extend to within ˜5 spin units of a crossing with an yrast line defined by calculated hyperdeformed transitions and will serve as important stepping stones into the spin region beyond 60ħ for future experiments.

  1. 126. Photographic copy of drawing (undated, probably around 1920, original ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. Photographic copy of drawing (undated, probably around 1920, original drawing in Archives, Office of the Building, Administration Building, Sears, Roebuck and Company Mail Order Plant, Chicago, Illinois). Drawn by Sears Department 224 (engineer unknown). 1 inch to 16 feet. Archival copies are provided for the basement floor plans, layout of the two central pneumatic tube stations, and the fourth floor (typical merchandise storage). Reproductions of sheets 4 through 8 and 10 through 14 are provided in field record. GENERAL LAYOUT OF PNEUMATIC TUBES (SHEET 3-BASEMENT) - Sears Roebuck & Company Mail Order Plant, Merchandise Building, 924 South Homan Avenue, Chicago, Cook County, IL

  2. Cerium(IV) Hexanuclear Clusters from Cerium(III) Precursors: Molecular Models for Oxidative Growth of Ceria Nanoparticles.

    PubMed

    Mathey, Laurent; Paul, Mitali; Copéret, Christophe; Tsurugi, Hayato; Mashima, Kazushi

    2015-09-14

    Reactions of cerium(III) nitrate, Ce(NO3 )3 ⋅6 H2 O, with different carboxylic acids, such as pivalic acid, benzoic acid, and 4-methoxybenzoic acid, in the presence of a tridentate N,N,N-donor ligand, diethylenetriamine (L(1) ), under aerobic conditions yielded the corresponding cerium hexamers Ce6 O8 (O2 CtBu)8 (L(1) )4 (1), Ce6 O8 (O2 CC6 H5 )8 (L(1) )4 (2), and Ce6 O8 (O2 CC6 H4 -4-OCH3 )8 (L(1) )4 (3). Hexamers 1, 2, and 3 contain the same octahedral Ce(IV) 6 O8 core, in which all interstitial oxygen atoms are connected by μ3 -oxo bridging ligands. In contrast, treatment of the Ce(IV) precursor (NH4 )2 Ce(NO3 )6 (CAN) with pivalic acid and the ligand L(1) under the same conditions afforded Ce6 O4 (OH)4 (O2 CtBu)12 (L(1) )2 (4), exhibiting a deformed octahedral Ce(IV) 6 O4 (OH)4 core containing μ3 -oxo and μ3 -hydroxo moieties in defined positions. In contrast to the formation of 1-3, the use of N-methyldiethanolamine (L) in the reaction with Ce(NO3 )3 ⋅6 H2 O and pivalic acid afforded a previously reported Ce(III) dinuclear cluster, Ce2 (O2 CtBu)6 L2 , even in the presence of dioxygen. ESI-MS analysis of the reaction mixture clearly indicated the importance of the ligand L(1) in promoting oxidation of the Ce(III) aggregates, [Cen (O2 CtBu)3n (L(1) )2 ], which is necessary for the formation of Ce(IV) hexamers. PMID:26236034

  3. E3 Ubiquitin ligase RNF126 regulates the progression of tongue cancer.

    PubMed

    Wang, Lina; Wang, Xin; Zhao, Yuehan; Niu, Weidong; Ma, Guowu; Yin, Wei; Shi, Chun

    2016-08-01

    This study aims to analyze the role of RNF126 in the oncogenesis of tongue cancer. The cell proliferation and viability of human tongue cancer cells, SCC25 and SCC9 cells, were determined by cell counting and MTT assay, respectively. The effect of RNF126 on regulating AKT signaling pathway was analyzed through western blotting. The transplantation tumor model of nude mice was used to evaluate the tumorigenecity of RNF126. Knockdown of RNF126 inhibited the proliferation and viability of SCC9 and SCC25 cells. Inhibition of RNF126 also decreased the activity of AKT1 as well as its downstream molecules. Furthermore, RNF126 regulated the tumor volume on mice model. These data suggested that RNF126 might be related to the progression of tongue cancer through regulating AKT signaling pathway. PMID:27227488

  4. Alpha decay properties of superheavy nuclei Z = 126

    NASA Astrophysics Data System (ADS)

    Manjunatha, H. C.

    2016-01-01

    We have studied the possible isotopes of superheavy nuclei Z = 126 in the range 288 ≤ A ≥ 339 by studying through their α-decay properties. α-Decay half-life for the isotopes of Z = 126 superheavy nuclei in the range 288 ≤ A ≥ 339 is performed within the Coulomb and proximity potential model for deformed nuclei (CPPMDN). The calculated α half-lives agree with the values computed using the Viola-Seaborg systematic, the universal curve of Poenaru et al. (2011) [61]; (2012) [62] and the analytical formulas of Royer (2000) [63]. To identify the mode of decay of these isotopes, the spontaneous-fission half-lives were also evaluated using the semiempirical relation given by Xu et al. (2008) [72]. As we could observe α chains consistently from the nuclei 288-306126, we have predicted that these nuclei could not be synthesized and detected experimentally via α decay as their decay half-lives are too small, which span the order 10-9 to 10-6 s. Most of the predicted, unknown nuclei in the range 307 ≤ A ≥ 326 were found to have relatively long half-lives. Of these the nuclei 307126, 318126, 319126, 320126 and 323-326126 were found to have long half-lives and hence could be sufficient to detect them if synthesized in a laboratory.

  5. Unexpected Enzyme TEM-126: Role of Mutation Asp179Glu

    PubMed Central

    Delmas, J.; Robin, F.; Bittar, F.; Chanal, C.; Bonnet, R.

    2005-01-01

    The clinical isolate Escherichia coli CF884 exhibited low-level resistance to ceftazidime (4 μg/ml) by a positive double-disk synergy test and apparent susceptibility to cefuroxime, cefotaxime, cefepime, cefpirome, and aztreonam. The enzyme implicated in this phenotype was a novel 180-kb plasmid-encoded TEM-type extended-spectrum β-lactamase designated TEM-126 which harbors the mutations Asp179Glu and Met182Thr. TEM-126 exhibited significant hydrolytic activity (kcat, 2 s−1) and a Km value of 82 μM against ceftazidime. Molecular dynamics simulations suggested that the substitution Asp179Glu induces subtle conformational changes to the omega loop which may favor the insertion of ceftazidime in the binding site and the correct positioning of the crucial residue Glu166. Overall, these results highlight the remarkable plasticity of TEM enzymes, which can expand their activity against ceftazidime by the addition of one carbon atom in the side chain of residue 179. PMID:16189109

  6. miR-126 and miR-126* repress recruitment of mesenchymal stem cells and inflammatory monocytes to inhibit breast cancer metastasis

    PubMed Central

    Zhang, Yun; Yang, Pengyuan; Sun, Tao; Li, Dong; Xu, Xin; Rui, Yaocheng; Li, Chaoran; Chong, Mengyang; Ibrahim, Toni; Mercatali, Laura; Amadori, Dino; Lu, Xincheng; Xie, Dong; Li, Qi-Jing; Wang, Xiao-Fan

    2013-01-01

    The tumour stroma is an active participant during cancer progression. Stromal cells promote tumour progression and metastasis through multiple mechanisms including enhancing tumour invasiveness and angiogenesis, and suppressing immune surveillance. We report here that miR-126/miR-126*, a microRNA pair derived from a single precursor, independently suppress the sequential recruitment of mesenchymal stem cells and inflammatory monocytes into the tumour stroma to inhibit lung metastasis by breast tumour cells in a mouse xenograft model. miR-126/miR-126* directly inhibit stromal cell-derived factor-1 alpha (Sdf-1α) expression, and indirectly suppress the expression of chemokine (C–C motif) ligand 2 (Ccl2) by cancer cells in an Sdf-1α-dependent manner. miR-126/miR-126* expression is downregulated in cancer cells by promoter methylation of their host gene Egfl7. These findings determine how this microRNA pair alters the composition of the primary tumour microenvironment to favour breast cancer metastasis, and demonstrate a correlation between miR-126/126* downregulation and poor metastasis-free survival of breast cancer patients. PMID:23396050

  7. AP2α controls the dynamic balance between miR-126&126* and miR-221&222 during melanoma progression.

    PubMed

    Felli, N; Errico, M C; Pedini, F; Petrini, M; Puglisi, R; Bellenghi, M; Boe, A; Felicetti, F; Mattia, G; De Feo, A; Bottero, L; Tripodo, C; Carè, A

    2016-06-01

    Accumulating evidences have shown the association between aberrantly expressed microRNAs (miRs) and cancer, where these small regulatory RNAs appear to dictate the cell fate by regulating all the main biological processes. We demonstrated the responsibility of the circuitry connecting the oncomiR-221&222 with the tumor suppressors miR-126&126* in melanoma development and progression. According to the inverse correlation between endogenous miR-221&222 and miR-126&126*, respectively increasing or decreasing with malignancy, their enforced expression or silencing was sufficient for a reciprocal regulation. In line with the opposite roles of these miRs, protein analyses confirmed the reverse expression pattern of miR-126&126*-targeted genes that were induced by miR-221&222. Looking for a central player in this complex network, we revealed the dual regulation of AP2α, on one side directly targeted by miR-221&222 and on the other a transcriptional activator of miR-126&126*. We showed the chance of restoring miR-126&126* expression in metastatic melanoma to reduce the amount of mature intracellular heparin-binding EGF like growth factor, thus preventing promyelocytic leukemia zinc finger delocalization and maintaining its repression on miR-221&222 promoter. Thus, the low-residual quantity of these two miRs assures the release of AP2α expression, which in turn binds to and induces miR-126&126* transcription. All together these results point to an unbalanced ratio functional to melanoma malignancy between these two couples of miRs. During progression this balance gradually moves from miR-126&126* toward miR-221&222. This circuitry, besides confirming the central role of AP2α in orchestrating melanoma development and/or progression, further displays the significance of these miRs in cancer and the option of utilizing them for novel therapeutics. PMID:26434590

  8. AP2α controls the dynamic balance between miR-126&126* and miR-221&222 during melanoma progression

    PubMed Central

    Felli, N; Errico, M C; Pedini, F; Petrini, M; Puglisi, R; Bellenghi, M; Boe, A; Felicetti, F; Mattia, G; De Feo, A; Bottero, L; Tripodo, C; Carè, A

    2016-01-01

    Accumulating evidences have shown the association between aberrantly expressed microRNAs (miRs) and cancer, where these small regulatory RNAs appear to dictate the cell fate by regulating all the main biological processes. We demonstrated the responsibility of the circuitry connecting the oncomiR-221&222 with the tumor suppressors miR-126&126* in melanoma development and progression. According to the inverse correlation between endogenous miR-221&222 and miR-126&126*, respectively increasing or decreasing with malignancy, their enforced expression or silencing was sufficient for a reciprocal regulation. In line with the opposite roles of these miRs, protein analyses confirmed the reverse expression pattern of miR-126&126*-targeted genes that were induced by miR-221&222. Looking for a central player in this complex network, we revealed the dual regulation of AP2α, on one side directly targeted by miR-221&222 and on the other a transcriptional activator of miR-126&126*. We showed the chance of restoring miR-126&126* expression in metastatic melanoma to reduce the amount of mature intracellular heparin-binding EGF like growth factor, thus preventing promyelocytic leukemia zinc finger delocalization and maintaining its repression on miR-221&222 promoter. Thus, the low-residual quantity of these two miRs assures the release of AP2α expression, which in turn binds to and induces miR-126&126* transcription. All together these results point to an unbalanced ratio functional to melanoma malignancy between these two couples of miRs. During progression this balance gradually moves from miR-126&126* toward miR-221&222. This circuitry, besides confirming the central role of AP2α in orchestrating melanoma development and/or progression, further displays the significance of these miRs in cancer and the option of utilizing them for novel therapeutics. PMID:26434590

  9. Copper, Boron, and Cerium Additions in Type 347 Austenitic Steel to Improve Creep Rupture Strength

    NASA Astrophysics Data System (ADS)

    Laha, Kinkar; Kyono, J.; Shinya, Norio

    2012-04-01

    Type 347 austenitic stainless steel (18Cr-12Ni-Nb) was alloyed with copper (3 wt pct), boron (0.01 to 0.06 wt pct), and cerium (0.01 wt pct) with an aim to increase the creep rupture strength of the steel through the improved deformation and cavitation resistance. Short-term creep rupture strength was found to increase with the addition of copper in the 347 steel, but the long-term strength was inferior. Extensive creep cavitation deprived the steel of the beneficial effect of creep deformation resistance induced by nano-size copper particles. Boron and cerium additions in the copper-containing steel increased its creep rupture strength and ductility, which were more for higher boron content. Creep deformation, grain boundary sliding, and creep cavity nucleation and growth in the steel were found to be suppressed by microalloying the copper-containing steel with boron and cerium, and the suppression was more for higher boron content. An auger electron spectroscopic study revealed the segregation of boron instead of sulfur on the cavity surface of the boron- and cerium-microalloyed steel. Cerium acted as a scavenger for soluble sulfur in the steels through the precipitation of cerium sulfide (CeS). This inhibited the segregation of sulfur and facilitated the segregation of boron on cavity surface. Boron segregation on the nucleated cavity surface reduced its growth rate. Microalloying the copper-containing 347 steel with boron and cerium thus enabled to use the full extent of creep deformation resistance rendered by copper nano-size particle by increase in creep rupture strength and ductility.

  10. Exposure, Health and Ecological Effects Review of Engineered Nanoscale Cerium and Cerium Oxide Associated with its Use as a Fuel Additive

    EPA Science Inventory

    Advances of nanoscale science have produced nanomaterials with unique physical and chemical properties at commercial levels which are now incorporated into over 1000 products. Nanoscale cerium (di) oxide (CeO(2)) has recently gained a wide range of applications which includes coa...

  11. Exposure and Health Effects Review of Engineered Nanoscale Cerium and Cerium Dioxide Associated with its Use as a Fuel Additive - NOW IN PRINT IN THE JOURNAL

    EPA Science Inventory

    Advances of nanoscale science have produced nanomaterials with unique physical and chemical properties at commercial levels that are now incorporated into over 1000 products. Nanoscale cerium (di) oxide (Ce02) has recently gained a wide range of applications which includes coatin...

  12. Thermochemical Modeling of the Uranium-Cerium-Oxygen System

    SciTech Connect

    Voit, Stewart L; Besmann, Theodore M

    2010-10-01

    with actinide materials, fundamental studies with uranium are performed using surrogate materials as stand-ins for transuranic elements. In most cases, cerium can be used as a suitable substitute for plutonium when performing O:M and sintering kinetics studies because of identical valence states. Differences exist between the magnitude of reported thermodynamic data of (U,Pu)O{sub x} and (U,Ce)O{sub x}, however the change in oxygen potential versus O:M follows the same trend for both systems. Cerium is also a major fission product element, and thus understanding its behavior in fuel is an important issue as well.

  13. Coupled redox transformations of catechol and cerium at the surface of a cerium(III) phosphate mineral

    NASA Astrophysics Data System (ADS)

    Cervini-Silva, Javiera; Gilbert, Benjamin; Fakra, Sirine; Friedlich, Stephan; Banfield, Jillian

    2008-05-01

    Highly insoluble Ce-bearing phosphate minerals form by weathering of apatite [Ca5(PO4)3.(OH,F,Cl)], and are important phosphorous repositories in soils. Although these phases can be dissolved via biologically-mediated pathways, the dissolution mechanisms are poorly understood. In this paper we report spectroscopic evidence to support coupling of redox transformations of organic carbon and cerium during the reaction of rhabdophane (CePO4·H2O) and catechol, a ubiquitous biogenic compound, at pH 5. Results show that the oxic-anoxic conditions influence the mineral dissolution behavior. Under anoxic conditions, the release of P and Ce occurs stoichiometrically. In contrast, under oxic conditions, the mineral dissolution behavior is incongruent, with dissolving Ce3+ ions oxidizing to CeO2. Reaction product analysis shows the formation of CO2, polymeric C, and oxalate and malate. The presence of more complex forms of organic carbon was also confirmed. Near edge X-ray absorption fine structure spectroscopy measurements at Ce-M4,5 and C-K absorption edges on reacted CePO4·H2O samples in the absence or presence of catechol and dissolved oxygen confirm that (1) the mineral surface converts to the oxide during this reaction, while full oxidation is limited to the near-surface region only; (2) the Ce valence remains unchanged when the reaction between CePO4·H2O and O2 but in the absence of catechol. Carbon K-edge spectra acquired from rhabdophane reacted with catechol under oxic conditions show spectral features before and after reaction that are considerably different from catechol, indicating the formation of more complex organic molecules. Decreases in intensity of characteristic catechol peaks are accompanied by the appearance of new π∗ resonances due to carbon in carboxyl (ca. 288.5 eV) and carbonyl (ca. 289.3 eV) groups, and the development of broad structure in the σ∗ region characteristic of aliphatic carbon. Evolution of the C K-edge spectra is consistent

  14. 126. View in Generator Room of exciter unit no. 1; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. View in Generator Room of exciter unit no. 1; looking northwest. This unit includes a Pelton wheel manufactured by Allis Chalmers, no. 261, type C-1, Breaking Horse Power 600, head 370 feet, and 360 rpm; a General Electric DC generator, no. 1357609, type MPC 8, 340-350 form LD, 1360 amp, 350 rpm, 250 volts (no load), 250 volts (full load); and a General Electric induction motor, no. 4228863, type KT-4424, 20-500-360 form A, 60 cycles, 45 amp, 6,600 volts, 500 horsepower, continuous 50-degree centigrade rise, 350 rpm with full-load. Photo by Jet Lowe, HAER, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

  15. Synthesis and catalytic properties of microemulsion-derived cerium oxide nanoparticles

    NASA Astrophysics Data System (ADS)

    Kockrick, Emanuel; Schrage, Christian; Grigas, Anett; Geiger, Dorin; Kaskel, Stefan

    2008-07-01

    The synthesis of cerium dioxide nanoparticles using an inverse microemulsion technique and precipitation method was investigated. Cerium hydroxide nanoparticles were synthesized by adding diluted ammonia to n-heptane-surfactant-cerium nitrate system. The micelle and particle size in the range of 5-12 nm were controlled by varying the molar water to surfactant ratio and analyzed by dynamic light scattering (DLS), small angle X-ray scattering (SAXS) and high-resolution transmission electron microscopy (HRTEM). Cerium hydroxide nanoparticles were isolated and subsequently treated at 100-600 °C to obtain nanoscale ceria. Crystallite sizes of cerium dioxide in the range of 6-16 nm were estimated by Scherrer analysis by X-ray diffraction (XRD) and HRTEM. The catalytic activity of particles annealed at 400 and 600 °C in soot combustion reactions was characterized by temperature-programmed oxidation (TPO) indicating a size-dependant activity. Crystallite sizes and catalytic stability of elevated ceria systems were tested in second combustion cycles.

  16. Catalysts with Cerium in a Membrane Reactor for the Removal of Formaldehyde Pollutant from Water Effluents.

    PubMed

    Gutiérrez-Arzaluz, Mirella; Noreña-Franco, Luis; Ángel-Cuevas, Saúl; Mugica-Álvarez, Violeta; Torres-Rodríguez, Miguel

    2016-01-01

    We report the synthesis of cerium oxide, cobalt oxide, mixed cerium, and cobalt oxides and a Ce-Co/Al₂O₃ membrane, which are employed as catalysts for the catalytic wet oxidation (CWO) reaction process and the removal of formaldehyde from industrial effluents. Formaldehyde is present in numerous waste streams from the chemical industry in a concentration low enough to make its recovery not economically justified but high enough to create an environmental hazard. Common biological degradation methods do not work for formaldehyde, a highly toxic but refractory, low biodegradability substance. The CWO reaction is a recent, promising alternative that also permits much lower temperature and pressure conditions than other oxidation processes, resulting in economic benefits. The CWO reaction employing Ce- and Co-containing catalysts was carried out inside a slurry batch reactor and a membrane reactor. Experimental results are reported. Next, a mixed Ce-Co oxide film was supported on an γ-alumina membrane used in a catalytic membrane reactor to compare formaldehyde removal between both types of systems. Catalytic materials with cerium and with a relatively large amount of cerium favored the transformation of formaldehyde. Cerium was present as cerianite in the catalytic materials, as indicated by X-ray diffraction patterns. PMID:27231888

  17. Precipitation-Redispersion of Cerium Oxide Nanoparticles with Poly(acrylic acid): Toward Stable Dispersions

    SciTech Connect

    Sehgal,A.; Lalatonne, Y.; Berret, J.; Morvan, M.

    2005-01-01

    We exploit a precipitation-redispersion mechanism for complexation of short chain polyelectrolytes with cerium oxide nanoparticles to extend their stability ranges. As synthesized, cerium oxide sols at pH 1.4 consist of monodisperse cationic nanocrystalline particles having a hydrodynamic diameter of 10 nm and a molecular weight of 400 000 g mol{sup -1}. We show that short chain uncharged poly(acrylic acid) at low pH when added to a cerium oxide sols leads to macroscopic precipitation. As the pH is increased, the solution spontaneously redisperses into a clear solution of single particles with an anionic poly(acrylic acid) corona. The structure and dynamics of cerium oxide nanosols and their hybrid polymer-inorganic complexes in solution are investigated by static and dynamic light scattering, X-ray scattering, and chemical analysis. Quantitative analysis of the redispersed sol gives rise to an estimate of 40-50 polymer chains per particle for stable suspension. This amount represents 20% of the mass of the polymer-nanoparticle complexes. This complexation adds utility to the otherwise unstable cerium oxide dispersions by extending the range of stability of the sols in terms of pH, ionic strength, and concentration.

  18. Electrosynthesis of cerium hexaboride by the molten salt technique

    NASA Astrophysics Data System (ADS)

    Amalajyothi, K.; Berchmans, L. John; Angappan, S.; Visuvasam, A.

    2008-07-01

    Molten salts are well thought-out as the incredibly promising medium for chemical and electrochemical synthesis of compounds. Hence a stab has been made on the electrochemical synthesis of CeB 6 using molten salt technique. The electrolyte consisted of lithium fluoride (LiF), boron trioxide (B 2O 3) and cerium chloride (CeCl 3). Electrochemical experiments were carried out in an inconal reactor in an argon atmosphere. Electrolysis was executed in a high-density graphite crucible, which doles out as the electrolyte clutching vessel as well as the anode. The cathode was made up of a molybdenum rod. The electrolysis was carried out at 900 °C at different current densities intended for the synthesis of CeB 6 crystals. After the electrolysis, the cathode product was removed and cleaned using dilute HCl solution. The crystals were scrutinized by X-ray diffraction (XRD) to make out the phase and the purity. It has been observed that CeB 6 crystals are synthesized at all current densities and the product has traces of impurities.

  19. Electron inelastic mean free paths in cerium dioxide

    NASA Astrophysics Data System (ADS)

    Krawczyk, M.; Holdynski, M.; Lisowski, W.; Sobczak, J. W.; Jablonski, A.

    2015-06-01

    Electron transport properties in CeO2 powder samples were studied by elastic-peak electron spectroscopy (EPES). Prior to EPES measurements, the CeO2 sample surface was pre-sputtered by 0.5 keV Ar ion etching. As a result, an altered layer with thickness of 1.3 nm was created. X-ray photoelectron spectroscopy (XPS) analysis revealed two chemical states of cerium Ce4+ (68%) and Ce3+ (32%) at the surface region of CeO2 sample after such treatment. The inelastic mean free path (IMFP), characterizing electron transport, was evaluated as a function of energy within the 0.5-2 keV range. Experimental IMFPs were corrected for surface excitations and approximated by the simple function λ = kEp, where λ was the IMFP, E denoted the energy (in eV), and k = 0.207 and p = 0.6343 were the fitted parameters. The IMFPs measured here were compared with IMFPs resulting from the TPP-2M predictive equation for the measured composition of oxide surface. The measured IMFPs were found to be from 3.1% to 20.3% smaller than the IMFPs obtained from the predictive formula in the energy range of 0.5-2 keV. The EPES IMFP value at 500 eV was related to the altered layer of sputtered CeO2 samples.

  20. Toxicity of Cerium Oxide Nanoparticles in Human Lung Cancer Cells

    SciTech Connect

    Weisheng, Lin; Huang, Yue-wern; Zhou, Xiao Dong; Ma, Yinfa

    2006-12-31

    With the fast development of nanotechnology, the nanomaterials start to cause people's attention for potential toxic effect. In this paper, the cytotoxicity and oxidative stress caused by 20-nm cerium oxide (CeO2) nanoparticles in cultured human lung cancer cells was investigated. The sulforhodamine B method was employed to assess cell viability after exposure to 3.5, 10.5, and 23.3 μg/ml of CeO2 nanoparticles for 24, 48, and 72 h. Cell viability decreased significantly as a function of nanoparticle dose and exposure time. Indicators of oxidative stress and cytotoxicity, including total reactive oxygen species, glutathione, malondialdehyde, α-tocopherol, and lactate dehydrogenase, were quantitatively assessed. It is concluded from the results that free radicals generated by exposure to 3.5 to 23.3 μg/ml CeO2 nanoparticles produce significant oxidative stress in the cells, as reflected by reduced glutathione and α-tocopherol levels; the toxic effects of CeO2 nanoparticles are dose dependent and time dependent; elevated oxidative stress increases the production of malondialdehyde and lactate dehydrogenase, which are indicators of lipid peroxidation and cell membrane damage, respectively.