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1

Palladium or palladium hydride nanoparticles synthesized by laser ablation of a bulk palladium target in liquids.  

PubMed

Laser ablation of a bulk Pd target in DIW, acetone or ethanol was carried out for the production of nanoparticles colloidal solutions. The size distribution of the nanoparticles follows log-normal function for all three liquids, with a median diameter of 3, 1.1 and 1.5 nm and standard deviation of 0.65, 1 and 1, respectively. Amorphous carbon is found on the nanoparticles synthesized in the hydrocarbons (acetone or ethanol). In DIW pure Pd nanoparticles were generated while ablation in acetone or ethanol lead to the synthesis of palladium hydride (PdHx) nanoparticles. These nanoparticles can be used in hydrogen storage applications. PMID:23664391

Semaltianos, N G; Petkov, P; Scholz, S; Guetaz, L

2013-04-13

2

Tellurium-118/antimony-118 generator  

NASA Astrophysics Data System (ADS)

This research develops a radioisotope generator to obtain Sb-118 (3.5 m half-life, 75 percent positron s) from the 6.0 d Te-118 parent. About 2 mCi of Te-118 was produced per run. Gamma ray analysis with a GeLi detector indicated the production of Te-118/Sb-118, Sb-120, Sb-122, Te-119/Sb-119, Te-119m/Sb-119, Te-121, and Te-121m. The Sb target was brought into solution with HCl and HNO3 acid. Six percent sodium tartrate was added to the target solution to form the Sb-tartrate complex for loading onto an inorganic ion exchange column of neutal alumina (Al2O3) and SnO2. Six percent sodium tartrate at various pH's ranging from 2 to 8 were used as the eluent solutions. Elution yields of Sn-118 and breakthroughs of Te radioisotopes were determined by dose calibrator measurements and GeLi analysis. Results indicate that the Sn-118 yield at pH 7.0 from the SnO2 was twice the yield from Al2O3 with 6 percent tartrate, while the breakthroughs of Te radioactivity were nearly comparable for the two columns. However, elutions with 6 percent tartrate at pH 3.5 doubled the yield of Sb-118 from Al2O3 while elutions at pH 3.5 from SnO2 increased the Sb-118 yield about 28 percent. Cumulative elution volumes of 6 percent tartrate at pH 7.0 from either Al2O3 or SnO2 led to a gradual reduction in Sb-118 yield from about 25 percent down to 5 to 6 percent. Elutions at pH 3.5, led to a higher yield without a gradual reduction in yield with cumulative elution volumes of 6 percent tartrate. A pH of 5.0 was finally chosen as the best compromise between sustained levels of Sb-118 yield and the biological and chemical advantages of working at a pH higher than 3.5. Exchange labeling was used to label thio compounds with the Sb-118-tartrate from the generator.

Yano, Y.; Lagunas-Solar, M.

1989-06-01

3

Preparation of Fibrous Palladium.  

National Technical Information Service (NTIS)

Acrylic fibers (pan fibers) absorb palladium from a hot solution of palladium nitrate in nitric acid. When palladium-loaded acrylic fibers are burned, fibers consisting of palladium and palladium oxide are formed. Reduction of this mixture with hydrogen p...

G. L. Silver P. W. Seabaugh B. T. Leahy D. W. Werkmeister F. S. Martin

1988-01-01

4

Spectroscopic and cytotoxic studies of the novel designed palladium(II) complexes: ?-Lactoglobulin and K562 as the targets  

Microsoft Academic Search

Since palladium complexes have been reported to show fewer side effects relative to other heavy metal anticancer compounds, in this study a new class of four structurally related anticancer Pd(II) complexes including 2,2?-bipyridin-n-butyl dithiocarbamato Pd(II) nitrate (Com-1), 2,2?-bipyridin-n-hexyl dithiocarbamato Pd(II) nitrate (Com-2), 2,2?-bipyridin glycinato Pd(II) nitrate (Com-3) and 2,2?-bipyridin octylglycinato Pd(II) nitrate (Com-4) was designed. The effect of four synthesized

A. Divsalar; A. A. Saboury; R. Yousefi; A. A. Moosavi-Movahedi; H. Mansoori-Torshizi

2007-01-01

5

High concentration of deuterium in palladium  

SciTech Connect

In this paper, based on theoretical calculations, new schemes to increase the deuterium density in palladium over its initial value are presented. A high deuterium concentration in palladium is needed for application to solid-state fusion. The first deuterium enrichment scheme makes use of plasma ion implantation, which consists of a cylindrical palladium rod (target) preloaded with deuterium atoms, coated with diffusion barrier material, and immersed in a deuterium plasma. The palladium rod is connected to a high-power modulator, which provides a series of negative voltage pulses. During these negative pulses, deuterium ions fall on the target, penetrate the diffusion barrier, and are implanted inside the palladium. For reasonable system parameters allowed by current technology, theoretical calculations indicate that the saturation deuterium density after prolonged ion implantation can be several times the palladium atomic number density. The second deuterium enrichment scheme makes use of temperature gradient effects on the deuterium solubility in palladium. A heat source at temperature T{sub 2} and a heat sink at temperature T{sub 1} (where T{sub 2} {gt} T{sub 1}) are in contact with two different parts of a palladium sample, which has been presoaked with deuterium atoms and has been coated with diffusion barrier material or has been securely locked in a metal case. The temperature gradient created in the sample from such an arrangement forces the deuterium atoms in the hot region to migrate into the cold region, resulting in higher deuterium density in the cold region.

Uhm, H.S.; Lee, W.M. (Naval Surface Warfare Center, White Oak, Silver Spring, MD (US))

1992-01-01

6

Final Hazard Categorization for the Remediation of the 118-D-1, 118-D-2, 118-D-3, 118-H-1, 118-H-2, and 118-H-3 Solid Waste Burial Grounds  

SciTech Connect

This report presents the final hazard categorization (FHC) for the remediation of the 118-D-1, 118-D-2, and 118-D-3 Burial Grounds located within the 100-D/DR Area of the Hanford Site and the 118-H-1, 118-H-2, and 118-H-3 Burial Grounds located within the 100-H Area of the Hanford Site.

T. J. Rodovsky

2006-12-06

7

Final Hazard Categorization for the Remediation of the 118-D-1, 118-D-2, 118-D-3, 118-H-1, 118-H-2, and 118-H-3 Solid Waste Burial Grounds  

SciTech Connect

This report presents the final hazard categorization (FHC) for the remediation of the 118-D-1, 118-D-2, and 118-D-3 Burial Grounds located within the 100-D/DR Area of the Hanford Site and the 118-H-1, 118-H-2, and 118-H-3 Burial Grounds located within the 100-H Area of the Hanford Site.

T. J. Rodovsky

2007-04-12

8

Final Hazard Categorization and Auditable Safety Analysis for the Remediation of the 118-D-1, 118-D-2, 118-D-3, 118-H-1, 118-H-2 and 118-H-3 Solid Waste Burial Grounds  

SciTech Connect

This report presents the initial hazard categorization, final hazard categorization and auditable safety analysis for the remediation of the 118-D-1, 118-D-2, and 118-D-3 Burial Grounds located within the 100-D/DR Area of the Hanford Site and the 118-H-1, 118-H-2, and 118-H-3 Burial Grounds located within the 100-H Area of the Hanford Site.

T. J. Rodovsky

2006-03-01

9

Final Hazard Categorization for the Remediation of the 118-D-1, 118-D-2, 118-D-3, 118-H-1, 118-H-2, and 118-H-3 Solid Waste Burial Grounds  

SciTech Connect

This report presents the final hazard categorization for the remediation of the 118-D-1, 118-D-2, 118-D-3 Burial Grounds located within the 100-D/DR Area of the Hanford Site and the 118-H-1, 118-H-2, and 118-H-3 Burial Grounds located within the 100-H Area of the Hanford Site. A material at risk calculation was performed that determined the radiological inventory for each burial ground to be Hazard Category 3.

J.D. Ludowise

2009-06-17

10

Sputter target  

DOEpatents

The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy.

Gates, Willard G. (Kansas City, MO); Hale, Gerald J. (Overland Park, KS)

1980-01-01

11

Spectroscopic and cytotoxic studies of the novel designed palladium(II) complexes: beta-lactoglobulin and K562 as the targets.  

PubMed

Since palladium complexes have been reported to show fewer side effects relative to other heavy metal anticancer compounds, in this study a new class of four structurally related anticancer Pd(II) complexes including 2,2'-bipyridin-n-butyl dithiocarbamato Pd(II) nitrate (Com-1), 2,2'-bipyridin-n-hexyl dithiocarbamato Pd(II) nitrate (Com-2), 2,2'-bipyridin glycinato Pd(II) nitrate (Com-3) and 2,2'-bipyridin octylglycinato Pd(II) nitrate (Com-4) was designed. The effect of four synthesized ligands on the protein structure and cell proliferation were investigated. Whey carrier proteins beta-lactoglobulin-A and-B (BLG-A and-B) and chronic myelogenous leukemia cell line K562 were the targets. Fluorescence and CD instruments were used to assess effect of the ligands on the protein structure. Growth inhibitory effect of the Pd(II) complexes towards the cancer cells was measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. Results of fluorescence studies revealed that the complexes had no dithiocarbamate moiety (compounds 3 and 4) could quench the intrinsic fluorescence emission of the proteins at lower concentrations than those had such moiety (compounds 1 and 2). The far-UV-CD studies revealed that the regular secondary structure of BLG-A and -B did not show any noticeable alteration upon interaction with different of Pd(II)-complexes. The results of cell proliferation assay also displayed that Com-1 and Com-2 had more growth inhibitory activity against K562, than Com-3 and Com-4. Our results suggested that addition of dithiocarbamate moiety to structure of Pd(II) complexes probably has important role to improve the antiproliferative properties of the anticancer ligands and fewer effects on the carrier protein structure. PMID:17097727

Divsalar, A; Saboury, A A; Yousefi, R; Moosavi-Movahedi, A A; Mansoori-Torshizi, H

2006-10-04

12

40 CFR 35.118 - Unexpended balances.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Unexpended balances. 35.118 Section 35.118 Protection...Requirements § 35.118 Unexpended balances. Subject to any relevant provisions...Financial Status Report shows unexpended balances, the Regional Administrator will...

2013-07-01

13

14 CFR 1264.118 - Prehearing conferences.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Prehearing conferences. 1264.118 Section 1264.118...OF 1986 § 1264.118 Prehearing conferences. (a) The presiding officer may schedule prehearing conferences as appropriate. (b) Upon...

2012-01-01

14

Design, synthesis, and biological evaluation of a new palladium(II) complex: beta-lactoglobulin and K562 as targets.  

PubMed

A water-soluble Pd(II) complex (2,2'-bipyridinglycinato Pd(II) nitrate) has been synthesized and characterized. The effect of synthesized complex on the carrier model protein structure and cell proliferation was investigated. Whey carrier protein beta-lactoglobulin-B (BLG-B) and chronic myelogenous leukemia cell line K562 were the targets. Fluorescence and CD instruments were used to assess effect of the complex on the protein structure at different temperatures. Growth inhibitory and apoptotic effect of the Pd(II) complex toward the cancer cells was measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and flow cytometry. This complex exhibited potent cytotoxic properties against chronic myelogenous leukemia cell line K562. The cells showed different sensitivity to complex. Cytotoxic studies shown that Pd(II) complex induced apoptosis of K562 cells in a concentration and time dependent manner. Then, it might be concluded that Pd(II) complex is a promising antiproliferative agent and should execute its biological effects by inducing apoptosis. Results of fluorescence studies revealed that Pd(II) complex can quench the intrinsic fluorescence emission of the protein at different temperatures. The far- and near-UV CD studies displayed that the Pd(II) complex induces changes in the secondary and tertiary structures of BLG-B at different temperatures. The biological significance of this work is evident since BLG serves as a carrier molecule for several antitumor compounds. Therefore, the interaction of the Pd(II) complex (with antitumor activity) can provide useful information to better design metal anticancer complexes with fewer side effects. PMID:20175505

Divsalar, Adeleh; Saboury, Ali Akbar; Mansoori-Torshizi, Hassan; Ahmad, Faizan

2010-03-18

15

Palladium on kieselguhr  

SciTech Connect

Palladium supported in kieselguhr (Pd/K) is a candidate material for processing of hydrogen isotopes at Savannah River Laboratory (SRL) and Savannah River Plant (SRP). Kieselguhr is a porous, sedimentary rock composed of silicified skeletal remains of single-celled aquatic plants called diatoms. SRL has developed a process for deposition of palladium on kieselguhr particles using immersion in an ammonical palladium chloride solution followed by heating in hydrogen to decompose the chloride to metallic palladium. The goal is to produce Pd/K particles with less than 250 ppm chlorine.

Mosley, W.C.

1988-01-11

16

INNOVATIONS IN PALLADIUM MEMBRANE RESEARCH  

Microsoft Academic Search

This review highlights various aspects of current palladium membrane research and serves as a comprehensive bibliography covering palladium membrane preparation methods and applications. There are many promising uses for palladium membranes, although widespread use of the available technologies is constrained primarily by the high cost of palladium, lack of durability due to hydrogen embrittlement, and susceptibility to fouling. Various researchers

S. N. Paglieri

2002-01-01

17

7 CFR 1150.118 - Marketing.  

Code of Federal Regulations, 2013 CFR

... 9 2013-01-01 2013-01-01 false Marketing. 1150.118 Section 1150.118 Agriculture...Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; MILK), DEPARTMENT...

2013-01-01

18

48 CFR 873.118 - Debriefings.  

Code of Federal Regulations, 2012 CFR

...Section 873.118 Federal Acquisition Regulations System DEPARTMENT OF VETERANS AFFAIRS DEPARTMENT SUPPLEMENTARY REGULATIONS SIMPLIFIED ACQUISITION PROCEDURES FOR HEALTH-CARE RESOURCES 873.118 Debriefings. Offerors excluded...

2012-10-01

19

48 CFR 873.118 - Debriefings.  

Code of Federal Regulations, 2011 CFR

...Section 873.118 Federal Acquisition Regulations System DEPARTMENT OF VETERANS AFFAIRS DEPARTMENT SUPPLEMENTARY REGULATIONS SIMPLIFIED ACQUISITION PROCEDURES FOR HEALTH-CARE RESOURCES 873.118 Debriefings. Offerors excluded...

2011-10-01

20

7 CFR 1150.118 - Marketing.  

Code of Federal Regulations, 2012 CFR

... 9 2012-01-01 2012-01-01 false Marketing. 1150.118 Section 1150.118 Agriculture...Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Milk), DEPARTMENT...

2012-01-01

21

33 CFR 118.20 - Obtaining information.  

Code of Federal Regulations, 2013 CFR

...20 Section 118.20 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.20 Obtaining information. Persons desiring information concerning the marking of bridges...

2013-07-01

22

33 CFR 118.50 - Inspection.  

Code of Federal Regulations, 2013 CFR

...50 Section 118.50 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.50 Inspection. Lights and other signals required or authorized under this part are...

2013-07-01

23

33 CFR 118.130 - Fog signals.  

Code of Federal Regulations, 2013 CFR

...130 Section 118.130 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.130 Fog signals. On waterways where visibility is frequently reduced due to fog...

2013-07-01

24

33 CFR 118.150 - Traveller platforms.  

Code of Federal Regulations, 2013 CFR

...150 Section 118.150 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.150 Traveller platforms. The District Commander may require under deck traveller...

2013-07-01

25

33 CFR 118.1 - General requirements.  

Code of Federal Regulations, 2013 CFR

...1 Section 118.1 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.1 General requirements. All persons owning or operating bridges over the navigable...

2013-07-01

26

33 CFR 118.25 - Application procedure.  

Code of Federal Regulations, 2010 CFR

...25 Section 118.25 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.25 Application procedure. Approval of lights and other signals required...

2010-07-01

27

7 CFR 11.8 - Division hearings.  

Code of Federal Regulations, 2013 CFR

...hearings. 11.8 Section 11.8 Agriculture Office of...Divison Rules of Procedures § 11.8 Division hearings. ...Civil Procedure (28 U.S.C. App.). (3) Testimony required...request for a hearing under § 11.6(b), an appellant...

2013-01-01

28

Electronic Structure of Palladium.  

National Technical Information Service (NTIS)

A detailed investigation of the electronic structure of palladium is presented in terms of two different band models: (1) ab initio calculations using the augmented-plane-wave method, and (2) calculations using the combined interpolation scheme augmented ...

F. M. Mueller A. J. Freeman J. O. Dimmock A. M. Furdyna

1969-01-01

29

Palladium nanowire hydrogen sensor  

Microsoft Academic Search

Palladium nanowires, synthesized by template-nanomanufacturing techniques, has been studied for hydrogen gas sensing applications at room temperature. In this study parallel arrays of Pd nanowires were fabricated by electrodeposition from an aqueous plating solution onto an HOPG surface. The nanowires were then transferred onto a polystyrene film and silver electrical contact pads were fabricated by shadow masking. The morphology of

Deep Banerji; Massood Z. Atashbar; Srikanth Singamaneni

2003-01-01

30

Sputter target  

Microsoft Academic Search

The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy. 8 claims.

W. G. Gates; G. J. Hale

1980-01-01

31

Sputter target  

Microsoft Academic Search

The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy. 1 fig.

W. G. Gates; G. J. Hale

1980-01-01

32

Sputter target  

SciTech Connect

The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy. 1 fig.

Gates, W.G.; Hale, G.J.

1980-06-24

33

Sputter target  

SciTech Connect

The disclosure relates to an improved sputter target for use in the deposition of hard coatings. An exemplary target is given wherein titanium diboride is brazed to a tantalum backing plate using a gold-palladium-nickel braze alloy. 8 claims.

Gates, W.G.; Hale, G.J.

1980-06-24

34

Dasycladus ramosus, WNC2005-118  

NSDL National Science Digital Library

WNC2005-118, Dasycladus ramosus Chamberlain, intertidal, Jesser Point, Sodwana Bay, Kwazulu-Natal, South Africa, collection SA05-070, 18 Aug 2005, Coll: Brooke Stuercke, Det: B Stuercke & DW Freshwater, voucher for Fritz's study 1 of 2

Freshwater, Wilson

2008-03-07

35

21 CFR 118.3 - Definitions.  

Code of Federal Regulations, 2013 CFR

...PRODUCTION, STORAGE, AND TRANSPORTATION OF SHELL EGGS § 118.3 Definitions. The definitions...SE) onto a farm or among poultry houses. Egg products facility means a USDA-inspected egg products plant where liquid, frozen,...

2013-04-01

36

Estimation of palladium  

Microsoft Academic Search

In presence of tartaric acid and ammonium chloride, quinaldinic acid quantitively precipitates palladium from a hot solution at a pH range 3 to 7 whereas other ions such as arsenic (As3+ and As5+), mercury (Hg2+), cadmium, bismuth, antimony, iron, chromium, aluminium, beryllium, thorium, cerium (Ce3+), titanium, zirconium, uranium (UO22+), vanadate, molybdate, tungstate, cobalt, nickel, manganese, magnesium, calcium, barium and strontium

A. K. MAJUMDAtt; J. G. Sen Gupta

1958-01-01

37

Nanostructured palladium membrane synthesis by magnetron sputtering  

Microsoft Academic Search

Palladium membranes are of technological interest since they show a very high selectivity for hydrogen. Diffusion through the palladium is often the rate-limiting step in hydrogen transport through the membrane. Hydrogen flux can be improved by reducing the membrane thickness and increasing the hydrogen diffusivity. Nanostructured palladium has a higher hydrogen diffusivity than conventional palladium due to its large volume

Kenneth J. Bryden; Jackie Y. Ying

1995-01-01

38

10 CFR 1.18 - Advisory Committee on Nuclear Waste.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Advisory Committee on Nuclear Waste. 1.18 Section 1.18 Energy NUCLEAR REGULATORY COMMISSION STATEMENT OF ORGANIZATION...Committees § 1.18 Advisory Committee on Nuclear Waste. The Advisory Committee on...

2013-01-01

39

47 CFR 15.118 - Cable ready consumer electronics equipment.  

Code of Federal Regulations, 2010 CFR

...2011-10-01 false Cable ready consumer electronics equipment. 15.118 Section 15.118...Radiators § 15.118 Cable ready consumer electronics equipment. (a) All consumer electronics TV receiving equipment marketed in...

2011-10-01

40

33 CFR 118.90 - Bridges crossing channel obliquely.  

Code of Federal Regulations, 2013 CFR

...Waters 1 2013-07-01 2013-07-01 false Bridges crossing channel obliquely. 118.90 Section 118...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.90 Bridges...

2013-07-01

41

33 CFR 118.100 - Retroreflective panels on bridge piers.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Retroreflective panels on bridge piers. 118.100 Section 118.100 Navigation...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.100...

2013-07-01

42

33 CFR 156.118 - Advance notice of transfer.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Advance notice of transfer. 156.118 Section 156.118 Navigation... POLLUTION OIL AND HAZARDOUS MATERIAL TRANSFER OPERATIONS Oil and Hazardous Material Transfer Operations § 156.118 Advance...

2013-07-01

43

48 CFR 1371.118 - Changes-ship repair.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Changes-ship repair. 1371.118 Section 1371.118 Federal...DEPARTMENT SUPPLEMENTAL REGULATIONS ACQUISITIONS INVOLVING SHIP CONSTRUCTION AND SHIP REPAIR Provisions and Clauses 1371.118...

2012-10-01

44

48 CFR 1371.118 - Changes-ship repair.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Changes-ship repair. 1371.118 Section 1371.118 Federal...DEPARTMENT SUPPLEMENTAL REGULATIONS ACQUISITIONS INVOLVING SHIP CONSTRUCTION AND SHIP REPAIR Provisions and Clauses 1371.118...

2011-10-01

45

47 CFR 15.118 - Cable ready consumer electronics equipment.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 false Cable ready consumer electronics equipment. 15.118 Section 15.118...Radiators § 15.118 Cable ready consumer electronics equipment. (a) All consumer electronics TV receiving equipment marketed in...

2009-10-01

46

47 CFR 15.118 - Cable ready consumer electronics equipment.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Cable ready consumer electronics equipment. 15.118 Section 15.118...Radiators § 15.118 Cable ready consumer electronics equipment. (a) All consumer electronics TV receiving equipment marketed in...

2010-10-01

47

40 CFR 86.118-78 - Dynamometer calibration.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Dynamometer calibration. 86.118-78 Section 86.118-78...Procedures § 86.118-78 Dynamometer calibration. (a) The dynamometer shall...and then calibrated as required. The calibration shall consist of the...

2013-07-01

48

21 CFR 20.118 - Advisory committee records.  

Code of Federal Regulations, 2013 CFR

21 Food and Drugs 1 2013-04-01 2013-04-01...118 Section 20.118 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH...INFORMATION Availability of Specific Categories of Records § 20.118...

2013-04-01

49

Hydrogen absorption induced metal deposition on palladium and palladium-alloy particles  

DOEpatents

The present invention relates to methods for producing metal-coated palladium or palladium-alloy particles. The method includes contacting hydrogen-absorbed palladium or palladium-alloy particles with one or more metal salts to produce a sub-monoatomic or monoatomic metal- or metal-alloy coating on the surface of the hydrogen-absorbed palladium or palladium-alloy particles. The invention also relates to methods for producing catalysts and methods for producing electrical energy using the metal-coated palladium or palladium-alloy particles of the present invention.

Wang, Jia X. (East Setauket, NY); Adzic, Radoslav R. (East Setauket, NY)

2009-03-24

50

Neutron Resonance Parameters for Sn-118 (Tin)  

NASA Astrophysics Data System (ADS)

This document is part of the Supplement containing the complete sets of data of Volume 24 `Neutron Resonance Parameters' of Landolt-Brnstein - Group I `Elementary Particles, Nuclei and Atoms'. It provides the neutron resonance parameters for the isotope Sn-118 (Tin). Also included are spectra of gamma-rays from neutron resonance capture.

Sukhoruchkin, S. I.; Soroko, Z. N.

51

Recoil products from p+118Sn and d+118Sn at 3.65 GeV/ A  

NASA Astrophysics Data System (ADS)

The recoil properties of the product nuclei from the interaction of 3.65-GeV/nucleon protons and deuterons from the Nuclotron and Synchrophasotron of the Laboratory of High Energies (LHE), Joint Institute for Nuclear Research (JINR) at Dubna, with a 118Sn target have been studied using catcher foils. The experimental data were analyzed using the mathematical formalism of the standard two-step vector model. The analysis of kinematical characteristics of the light and medium-mass reaction products confirmed the contribution of fragmentation (or multifragmentation) processes in the production of these nuclei. The comparison of the results for protons and deuterons was made. The longitudinal momenta transferred to the target in the interaction with protons and deuterons were similar and was shown to depend only on the velocity, but not on the mass of projectile. Three different Los Alamos versions of the quarkgluon-string model (LAQGSM) were used for the discussion of our experimental results.

Balabekyan, A. R.; Danagulyan, A. S.; Drnoyan, J. R.; Hovhannisyan, G. H.; Demekhina, N. A.; Adam, J.; Kalinnikov, V. G.; Krivopustov, M. I.; Pronskikh, V. S.; Stegailov, V. I.; Solnyshkin, A. A.; Chaloun, P.; Tsoupko-Sitnikov, V. M.; Mashnik, S. G.; Gudima, K. K.

2007-11-01

52

27 CFR 19.118 - Change in location.  

Code of Federal Regulations, 2013 CFR

...location. 19.118 Section 19.118 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL DISTILLED SPIRITS PLANTS Changes to Registrations and...

2013-04-01

53

14 CFR 1214.118 - Special criteria for deployable payloads.  

Code of Federal Regulations, 2013 CFR

...1214.118 Section 1214.118 Aeronautics and Space NATIONAL AERONAUTICS AND SPACE ADMINISTRATION SPACE FLIGHT General Provisions Regarding Space Shuttle Flights of Payloads for Non-U.S. Government, Reimbursable Customers §...

2013-01-01

54

21 CFR 118.4 - Salmonella Enteritidis (SE) prevention measures.  

Code of Federal Regulations, 2013 CFR

...and Drugs 2 2013-04-01 2013-04-01 false Salmonella Enteritidis (SE) prevention measures. 118.4 Section...STORAGE, AND TRANSPORTATION OF SHELL EGGS § 118.4 Salmonella Enteritidis (SE) prevention measures. You...

2013-04-01

55

Aromatase is phosphorylated in situ at Serine-118  

PubMed Central

Phosphorylation of the cytochrome P450 aromatase has been proposed as a switch to rapidly modulate enzymatic activity and estrogen biosynthesis. Herein, we demonstrate that aromatase serine-118 is a potential phosphorylation site in mammalian cells. The amino acid context surrounding S118 is highly conserved among diverse animal species and suggests that an AGC-like kinase may phosphorylate aromatase. Mutation of S118 to Ala blocked phosphorylation. Mutation of S118 to either Ala or Asp destabilized aromatase, indicating an important structural role for S118. The phosphomimetic S118D mutant showed decreased specific enzymatic activity, decreased Vmax, and increased Km, while the S118A phospho-inhibiting mutant showed opposite effects. Our findings suggest that phosphorylation of S118 may decrease aromatase activity, presenting a mechanism whereby kinase signaling may modulate estrogen production and hormone balance.

Miller, Todd W.; Shin, Incheol; Kagawa, Norio; Evans, Dean B.; Waterman, Michael R.; Arteaga, Carlos L.

2010-01-01

56

33 CFR 118.3 - Incorporation by reference.  

Code of Federal Regulations, 2013 CFR

...3 Section 118.3 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.3 Incorporation by reference. (a) In this part, portions or the entire text...

2013-07-01

57

33 CFR 118.55 - Periods of operation.  

Code of Federal Regulations, 2013 CFR

...55 Section 118.55 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.55 Periods of operation. (a) Lights shall be displayed from sunset to sunrise and at...

2013-07-01

58

33 CFR 118.140 - Painting bridge piers.  

Code of Federal Regulations, 2013 CFR

...140 Section 118.140 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.140 Painting bridge piers. The District Commander may require painting the sides of...

2013-07-01

59

33 CFR 118.15 - Penalty for interference or obstruction.  

Code of Federal Regulations, 2013 CFR

...15 Section 118.15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.15 Penalty for interference or obstruction. Any person violating the provisions...

2013-07-01

60

33 CFR 118.10 - Interference or obstruction prohibited.  

Code of Federal Regulations, 2013 CFR

...10 Section 118.10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.10 Interference or obstruction prohibited. No person shall obstruct or interfere with any...

2013-07-01

61

33 CFR 118.120 - Radar reflectors and racons.  

Code of Federal Regulations, 2013 CFR

...120 Section 118.120 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.120 Radar reflectors and racons. The District Commander may require or authorize...

2013-07-01

62

33 CFR 118.5 - Penalty for failure to maintain.  

Code of Federal Regulations, 2013 CFR

...5 Section 118.5 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.5 Penalty for failure to maintain. Any person required to maintain lights and other...

2013-07-01

63

33 CFR 118.30 - Action by Coast Guard.  

Code of Federal Regulations, 2013 CFR

...30 Section 118.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.30 Action by Coast Guard. (a) The District Commander receiving the application...

2013-07-01

64

33 CFR 118.30 - Action by Coast Guard.  

Code of Federal Regulations, 2010 CFR

...30 Section 118.30 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.30 Action by Coast Guard. (a) The District Commander receiving the...

2010-07-01

65

33 CFR 118.40 - Modification of requirements.  

Code of Federal Regulations, 2010 CFR

...40 Section 118.40 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.40 Modification of requirements. (a) The District Commander may modify the...

2009-07-01

66

33 CFR 118.140 - Painting bridge piers.  

Code of Federal Regulations, 2010 CFR

... Section 118.140 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.140 Painting bridge piers. The District Commander may require painting the...

2010-07-01

67

33 CFR 118.10 - Interference or obstruction prohibited.  

Code of Federal Regulations, 2010 CFR

...10 Section 118.10 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.10 Interference or obstruction prohibited. No person shall obstruct or...

2010-07-01

68

33 CFR 118.140 - Painting bridge piers.  

Code of Federal Regulations, 2010 CFR

... Section 118.140 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.140 Painting bridge piers. The District Commander may require painting the...

2009-07-01

69

Palladium/kieselguhr composition and method  

DOEpatents

A hydrogen-absorbing composition and method for making such a composition. The composition comprises a metal hydride, preferably palladium, deposited onto a porous substrate such as kieselguhr, for use in hydrogen-absorbing processes. The composition is made by immersing a substrate in a concentrated solution containing palladium, such as tetra-amine palladium nitrate. Palladium from the solution is deposited onto the porous substrate, which is preferably in the form of kieselguhr particles. The substrate is then removed from the solution, calcined, and heat treated. This process is repeated until the desired amount of palladium has been deposited onto the substrate.

Mosley, Jr., Wilbur C. (202 Fairway Dr., New Ellenton, SC 29809)

1993-01-01

70

Palladium/kieselguhr composition and method  

DOEpatents

A hydrogen-absorbing composition and method for making such a composition are described. The composition comprises a metal hydride, preferably palladium, deposited onto a porous substrate such as kieselguhr, for use in hydrogen-absorbing processes. The composition is made by immersing a substrate in a concentrated solution containing palladium, such as tetra-amine palladium nitrate. Palladium from the solution is deposited onto the porous substrate, which is preferably in the form of kieselguhr particles. The substrate is then removed from the solution, calcined, and heat treated. This process is repeated until the desired amount of palladium has been deposited onto the substrate.

Mosley, W.C. Jr.

1993-09-28

71

33 CFR 118.80 - Lights on bascule bridges.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Lights on bascule bridges. 118.80 Section 118.80 Navigation and Navigable...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.80 Lights...

2013-07-01

72

33 CFR 118.85 - Lights on vertical lift bridges.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Lights on vertical lift bridges. 118.85 Section 118.85 Navigation and Navigable...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.85 Lights...

2013-07-01

73

33 CFR 118.65 - Lights on fixed bridges.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Lights on fixed bridges. 118.65 Section 118.65 Navigation and Navigable...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.65 Lights...

2013-07-01

74

33 CFR 118.70 - Lights on swing bridges.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Lights on swing bridges. 118.70 Section 118.70 Navigation and Navigable...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.70 Lights...

2013-07-01

75

46 CFR 118.320 - Fire hoses and nozzles.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Fire hoses and nozzles. 118.320 Section 118.320 Shipping...Fire Main System § 118.320 Fire hoses and nozzles. (a) A fire hose with a nozzle must be attached to each fire hydrant...

2012-10-01

76

32 CFR 552.118 - Issuance from unit arms room.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 false Issuance from unit arms room. 552.118 Section 552.118...MILITARY RESERVATIONS Physical Security of Arms, Ammunition, and Explosives-Fort Lewis...Washington § 552.118 Issuance from unit arms room. When privately owned weapons...

2009-07-01

77

32 CFR 552.118 - Issuance from unit arms room.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 true Issuance from unit arms room. 552.118 Section 552.118...MILITARY RESERVATIONS Physical Security of Arms, Ammunition, and Explosives-Fort Lewis...Washington § 552.118 Issuance from unit arms room. When privately owned weapons...

2010-07-01

78

33 CFR 118.85 - Lights on vertical lift bridges.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Lights on vertical lift bridges. 118.85 Section 118.85 Navigation...AND OTHER SIGNALS § 118.85 Lights on vertical lift bridges. (a) Lift span lights. The vertical lift span of every...

2009-07-01

79

33 CFR 118.85 - Lights on vertical lift bridges.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Lights on vertical lift bridges. 118.85 Section 118.85 Navigation...AND OTHER SIGNALS § 118.85 Lights on vertical lift bridges. (a) Lift span lights. The vertical lift span of every...

2010-07-01

80

40 CFR 86.118-00 - Dynamometer calibrations.  

Code of Federal Regulations, 2011 CFR

...18 2011-07-01 2011-07-01 false Dynamometer calibrations. 86.118-00 Section 86.118-00 Protection of...Vehicles; Test Procedures § 86.118-00 Dynamometer calibrations. (a) The dynamometer shall be calibrated at...

2011-07-01

81

Platinum-Palladium Crystal Structures  

NASA Astrophysics Data System (ADS)

Being able to predict Platinum-Palladium ordering is important in discovering new alloys that have commercial and industrial applications. Using direct quantum mechanical calculations coupled with a lattice-based Hamiltonian called a cluster expansion, we can predict which crystal structures are thermodynamically stable for. In addition, a Monte Carlo simulation can be used in this model to determine the order-disorder transition temperatures. Knowing which structures are thermodynamically stable and their respective transition temperatures may help develop useful platinum palladium alloys.

Pratt, Weston

2009-10-01

82

Palladium Electrolytes for Use in Selective Plating Processes.  

National Technical Information Service (NTIS)

The development of an aqueous palladium electrolyte not containing ammonia, for use in selective plating processes is reported. The deposition of pure palladium layers was effected from compounds of palladium(II) with a polyamine as complexing ligand. The...

K. Wundt M. Branik H. Meyer

1983-01-01

83

Palladium Catalyzed Reduction of Nitrobenzene.  

ERIC Educational Resources Information Center

|Compares two palladium (Pd/C) reducing systems to iron/tin-hydrochloric acid (Fe/HCl and Sn/HCl) reductions and suggests an efficient, clean, and inexpensive procedures for the conversion of nitrobenzene to aniline. Includes laboratory procedures used and discussion of typical results obtained. (JN)|

Mangravite, John A.

1983-01-01

84

A novel palladium-catalyzed homocoupling reaction initiated by transmetallation of palladium enolates  

Microsoft Academic Search

Palladium-catalyzed homocoupling reaction of aryl boronic acids has been developed using a protocol similar to the well-documented crosscoupling reaction. ?-Halocarbonyl compounds are applied to initiate the reaction via oxidative addition to a palladium(0) species. The resulting palladium enolate halide can promote the double transmetallation. Reductive elimination generates the desire homocoupling product.

Aiwen Lei; Xumu Zhang

2002-01-01

85

Palladium as electrode in DNA sequencing  

NASA Astrophysics Data System (ADS)

We construct a molecular junction comprising two identical ``reader'' molecules that are each linked on one end to a DNA single base via hydrogen bonds and on the other end to a palladium electrode. The structure of the junction is thus palladium-reader-base-reader-palladium. The palladium-reader contacts occur via Pd-S bonds. We calculated the electronic structure and conductance of the molecular junctions. Compared with the performance of molecular junctions with gold or titanium nitride electrodes, the current-voltage characteristics of the molecular junctions with palladium electrodes show higher sensitivity to the identity of the bridging DNA base, allowing the DNA bases to be distinguished more easily. Therefore, palladium is a superior electrode for molecular electronics and DNA sequencing.

Chen, Xiang

2013-08-01

86

Titanium(IV) oxide photocatalysts with palladium  

SciTech Connect

Samples of palladium decomposed onto TiO[sub 2] particles were prepared by two methods: the dispersion of a PdCl[sub 2] solution followed by thermal decomposition, and the photodecomposition of PdCl[sub 2]. The addition of palladium to all samples increased their photocatalytic activity toward the degradation of 1,4-dichlorobenzene. This increase was optimized and compared for these two preparative methods. Palladium was also decomposed onto TiO[sub 2] thin films by the photodecomposition of PdCl[sub 2]. The addition of palladium to the films increased their photocatalytic activity toward the degradation of salicylic acid. 35 refs., 4 figs., 4 tabs.

Papp, J.; Shen, H.S.; Kershaw, R.; Dwight, K.; Wold, A. (Brown Univ., Providence, RI (United States))

1993-03-01

87

Tritium Production from Palladium Alloys  

SciTech Connect

A number of palladium alloys have been loaded with deuterium or hydrogen under low energy bombardment in a system that allows the continuous measurement of tritium. Long run times (up to 200 h) result in an integration of the tritium and this, coupled with the high intrinsic sensitivity of the system ({approximately}0.1 nCi/l), enables the significance of the tritium measurement to be many sigma (>10). We will show the difference in tritium generation rates between batches of palladium alloys (Rh, Co, Cu, Cr, Ni, Be, B, Li, Hf, Hg and Fe) of various concentrations to illustrate that tritium generation rate is dependent on alloy type as well as within a specific alloy, dependent on concentration.

Claytor, T.N.; Schwab, M.J.; Thoma, D.J.; Teter, D.F.; Tuggle, D.G.

1998-04-19

88

PENTOSE AMIDOPHOSPHITES. SYNTHESIS, PALLADIUM COMPLEXES  

Microsoft Academic Search

Glycoamidophosphites in the pentose series have been synthesized based on 2,3-O-isopropylidene-?-methyl-D-ribofuranoside, 1,2-O-isopropylidene-?-D-xylofuranose, xylitane and 3,5-O-isopropylidenexylitane. Some of these compounds are used as ligands for the synthesis of the palladium complexes. Consideration is given to the behavior of these complexes as catalysts in the asymmetric hydrogenation of itaconic acid.

E. E. Nifantyev; S. A. Rumyantseva; M. P. Koroteyev; E. M. Abbasov; A. T. Teleshev; V. A. Pavlov; E. I. Klabunovsky

1981-01-01

89

30 CFR 250.118 - Will BSEE approve gas injection?  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Will BSEE approve gas injection? 250.118 Section 250...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL...Standards § 250.118 Will BSEE approve gas injection? The Regional Supervisor...

2013-07-01

90

40 CFR 51.118 - Stack height provisions.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Stack height provisions. 51.118 Section 51... Control Strategy § 51.118 Stack height provisions. (a) The plan must...affected by so much of any source's stack height that exceeds good engineering...

2013-07-01

91

19 CFR 12.118 - Toxic Substances Control Act.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Toxic Substances Control Act. 12.118 Section...of Mixtures and Articles § 12.118 Toxic Substances Control Act. The importation...substance or mixture, is governed by the Toxic Substances Control Act (TSCA)...

2013-04-01

92

The ITEA-NASA STS-118 Design Challenges  

ERIC Educational Resources Information Center

|In conjunction with the August 8, 2007 launch of STS-118, the International Technology Education Association (ITEA) and National Aeronautics and Space Administration (NASA) developed and recently debuted curricular units for Grades K-12 on Space Exploration, known as STS-118 Design Challenges. The units focus on aspects of the themes that NASA

Meade, Shelli D.; Caron, Daniel W.; Gray, Aaron; Weaver, Kim

2008-01-01

93

Hydrogen purifier. [palladium-silver tube purifier  

Microsoft Academic Search

Pressurized impure hydrogen gas from a hydrogen generator, bottled hydrogen, or other source is fed to a separate palladium purifier unit having an ultrapure hydrogen output for analytical use, and the like. A palladium-silver tube is inserted into a jacket tube to form a tube assembly which is coiled around a heated block. The jacket tube receives the impure hydrogen

C. O. Buckley; J. W. Jr. Bunn

1976-01-01

94

Biaxially textured metal substrate with palladium layer  

DOEpatents

Described is an article comprising a biaxially textured metal substrate and a layer of palladium deposited on at least one major surface of the metal substrate; wherein the palladium layer has desired in-plane and out-of-plane crystallographic orientations, which allow subsequent layers that are applied on the article to also have the desired orientations.

Robbins, William B [Maplewood, MN

2002-12-31

95

Platinum and palladium in roadside dust  

Microsoft Academic Search

Automobile catalytic converters apparently release significant quantities of platinum and palladium to the roadside environment. Dust samples collected from broad-leaved plants contained as high as 0.7 ppm of platinum and 2.5 times less palladium. Rains may wash this concentrate into local water systems or the ocean. 8 references, 1 table.

Vernon F. Hodge; Martha O. Stallard

1986-01-01

96

Pion scattering to collective excitations in 90Zr and 118Sn  

NASA Astrophysics Data System (ADS)

Inelastic scattering of 163 MeV ?- and ?+ to the collective states of 90Zr and 118Sn was used to determine the neutron-proton composition of the transitions. The lowest 2+ and 3- states were examined for both targets, as were the low-energy octupole, giant quadrupole, and giant monopole excitations. Only slight deviations from the features expected for a hydrodynamic model are observed for the low-lying 3- and 2+ states of 118Sn, but these states are observed to be proton-like in 90Zr. The giant quadrupole resonances and giant monopole resonances in both targets show a significantly greater ?- than ?+ strength, while the low-energy octupole resonance is excited symmetrically.

Ullmann, J. L.; Alons, P. W. F.; Clausen, B. L.; Kraushaar, J. J.; Mitchell, J. H.; Peterson, R. J.; Ristinen, R. A.; Boudrie, R. L.; King, N. S. P.; Morris, C. L.; Knudson, J. N.; Gibson, E. F.

1987-03-01

97

States in sup 118 Sn from sup 117 Sn(d,p) sup 118 Sn at 12 MeV.  

National Technical Information Service (NTIS)

sup 118 Sn energy levels up to = 5.2 MeV excitation energy are studied in the reaction sup 117 Sn (d,p) sup 118 Sn. Deuterons had a bombarding energy of 12 MeV. The protons were analyzed by a magnetic spectrograph. The detector was nuclear emulsion and th...

E. Frota-Pessoa

1983-01-01

98

Electromagnetic moment investigation of two short-lived isomeric states in118Sb  

NASA Astrophysics Data System (ADS)

Two short-lived isomeric states in118Sb have been investigated by the118Sn( p, n),118Sn( d, 2n) and115In( ?, n) reactions. The TDPAD method on solid and liquid metallic targets was used to measure the electromagnetic moments of these states. The results of the experiments are: 10050_2005_Article_BF01411861_TeX2GIFE1.gif begin{gathered} T_{1/2} = 13.4{text{ }}(3){text{ }}ns I^? = 3^ - {text{ }}g = - 1.254(31){text{ }}|Q| = 0.25{text{ }}(5){text{ }}b, \\ T_{1/2} = 22.8{text{ }}(4){text{ }}ns I^? = 7^ + {text{ }}g = + 0.680(18){text{ }}|Q| > 1.4{text{ }}b. \\ Pure[? 2d_{5/2} ? v1h_{1{text{ }}1/2} ]_{3 - } and[? 1g_{9/2}^{ - 1} ? v2d_{5/2}^{ - 1} ]_{7 + } configurations have been established for the two isomeric states. An experimental evidence concerning the participation of the 1 g {9/2/-1} proton shell-model intruder excitation into the positive parity low-lying level structure of the odd-odd118Sb nucleus was obtained.

Dima, S.; Duma, M.; Ionescu-Bujor, M.; Iord?chescu, A.; Pascovici, G.; Stan-Sion, C.

1985-12-01

99

LLE Review 118 (January-March 2009)  

SciTech Connect

This issue has the following articles: (1) Applied Plasma Spectroscopy: Laser-Fusion Experiments; (2) Relativistic Electron-Beam Transport Studies Using High-Resolution, Coherent Transition Radiation Imaging; (3) Pressure-Driven, Resistive Magnetohydrodynamic Interchange Instabilities in Laser-Produced, High-Energy-Density Plasmas; (4) Extended Model for Polymer Cholesteric Liquid Crystal Flake Reorientation and Relaxation; (5) Modeling the Effects of Microencapsulation on the Electro-Optic Behavior of Polymer Cholesteric Liquid Crystal Flakes; (6) Capillarity and Dielectrophoresis of Liquid Deuterium; and (7) A Stable Mid-IR, GaSb-Based Diode Laser Source for Cryogenic Target Layering at the OMEGA Laser Facility.

Bittle, W., editor

2009-08-03

100

Recovery of Macroinvertebrates by Screening in the Field: A Comparison between Coarse (1.18 mm)- and Fine (0.60 mm)-Mesh Sieves. Long Term Resource Monitoring Program.  

National Technical Information Service (NTIS)

We evaluated the potential loss of target benthic macroinvertebrates from coarse-mesh field wash down of samples through a 1.18-mm mesh sieve nested on a 0.60-mm mesh sieve. Visible target organisms (midges, mayflies, and fingernail clams) in the 1.18-mm ...

J. T. Dukerschein R. Gent J. Sauer

1997-01-01

101

Generation of palladium blacks from organometallic compounds  

SciTech Connect

The authors used chemical analysis, derivatography, and IR and x-ray photoelectron spectroscopy to study blacks prepared from palladium organometallic compounds. The active phase on the surface of these blacks is palladium in an oxidation state close to zero. The activity and selectivity of these catalysts in the liquid-phase hydrogenation of acetylenic bonds depends on the nature of the ligands of the starting pi-allylic palladium compounds, increasing in the series Cl is less than C/sub 5/H/sub 5/ is less than PPh/sub 3/.

Fasman, A.B.; Perkas, N.V.; Vozdvizhenskii, V.F.

1985-12-01

102

18 CFR 11.8 - Adjustment of annual charges.  

Code of Federal Regulations, 2013 CFR

...and Water Resources FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY REGULATIONS UNDER THE FEDERAL...FEDERAL POWER ACT Charges for Costs of Administration, Use...Lands, and Use of Government Dams § 11.8 Adjustment of...

2013-04-01

103

46 CFR 171.118 - Automatic ventilators and side ports.  

Code of Federal Regulations, 2011 CFR

...STABILITY SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS Openings in the Side of a Vessel Below the Bulkhead or Weather Deck § 171.118 Automatic ventilators and side ports. (a) An automatic ventilator must not be fitted in the...

2011-10-01

104

46 CFR 171.118 - Automatic ventilators and side ports.  

Code of Federal Regulations, 2012 CFR

...STABILITY SPECIAL RULES PERTAINING TO VESSELS CARRYING PASSENGERS Openings in the Side of a Vessel Below the Bulkhead or Weather Deck § 171.118 Automatic ventilators and side ports. (a) An automatic ventilator must not be fitted in the...

2012-10-01

105

27 CFR 479.118 - Proof of exportation.  

Code of Federal Regulations, 2011 CFR

...and Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Importation and Exportation Exportation § 479.118 Proof...

2011-04-01

106

118. Historic American Buildings Survey, Donald W. Dickensheets, Photographer. April ...  

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

118. Historic American Buildings Survey, Donald W. Dickensheets, Photographer. April 29, 1940. EAST TRANSEPT MURAL, 'CHILDHOOD OF VIRGIN MARY'. (NORTH ELEVATION) - San Xavier del Bac Mission, Mission Road, Tucson, Pima County, AZ

107

46 CFR 118.520 - Installation and location.  

Code of Federal Regulations, 2012 CFR

...ACCOMMODATIONS FOR MORE THAN 49 PASSENGERS FIRE PROTECTION EQUIPMENT Portable Fire Extinguishers § 118.520 Installation and location. Portable fire extinguishers must be located so that they are...

2012-10-01

108

46 CFR 118.500 - Required number, type, and location.  

Code of Federal Regulations, 2012 CFR

...PROTECTION EQUIPMENT Portable Fire Extinguishers § 118.500 Required number...location. (a) Each portable fire extinguisher on a vessel must be of a type...minimum number of portable fire extinguishers required on a vessel...

2012-10-01

109

27 CFR 21.118 - Methyl n-butyl ketone.  

Code of Federal Regulations, 2013 CFR

... FORMULAS FOR DENATURED ALCOHOL AND RUM Specifications for Denaturants § 21.118 Methyl n -butyl ketone. (a) Acidity (as acetic acid). 0.02 percent by weight, maximum. (b) Color. Colorless. (c) Odor. Characteristic...

2013-04-01

110

27 CFR 479.118 - Proof of exportation.  

Code of Federal Regulations, 2013 CFR

...Firearms BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE FIREARMS AND AMMUNITION MACHINE GUNS, DESTRUCTIVE DEVICES, AND CERTAIN OTHER FIREARMS Importation and Exportation Exportation § 479.118 Proof of...

2013-04-01

111

118. Detail of turbine unit no. 2, looking south. Photo ...  

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

118. Detail of turbine unit no. 2, looking south. Photo by Jet Lowe, HAER, 1989. - Puget Sound Power & Light Company, White River Hydroelectric Project, 600 North River Avenue, Dieringer, Pierce County, WA

112

View across Argonne Parade Ground, with building 118 in left ...  

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

View across Argonne Parade Ground, with building 118 in left foreground toward Bandall Avenue Buildings in background. View to south. - Fort David A. Russell, Randall Avenue west of First Street, Cheyenne, Laramie County, WY

113

4. SANDY RIVER (STARK ST.) BRIDGE, WEST ELEVATION, LOOKING 118 ...  

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

4. SANDY RIVER (STARK ST.) BRIDGE, WEST ELEVATION, LOOKING 118 DEGREES EAST-SOUTHEAST. - Historic Columbia River Highway, Stark Street Bridge, Spanning Sandy River on Stark Street at Historic Columbia River Highway, Troutdale, Multnomah County, OR

114

42 CFR 460.118 - Violation of rights.  

Code of Federal Regulations, 2012 CFR

...DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) PROGRAMS OF ALL-INCLUSIVE CARE FOR THE ELDERLY (PACE) Participant Rights § 460.118 Violation of rights. The PACE...

2012-10-01

115

Shape coexistence and strongly coupled bands in {sup 118}Sb  

SciTech Connect

Excited states of {sup 118}Sb were populated via the {sup 116}Cd({sup 7}Li,5n){sup 118}Sb fusion-evaporation reaction at a beam energy of 50 MeV. The previously known level scheme has been considerably extended, and about 36 new transitions were added into the level scheme of {sup 118}Sb. One new rotational band has been identified, and assigned the {pi}g{sub 9/2}{sup -1} x {nu}g{sub 7/2} configuration. The configuration-fixed constrained triaxial relativistic mean-field approaches and the particle-rotor model calculations are employed for analysis of the level structure of {sup 118}Sb.

Wang, S. Y.; Qi, B.; Sun, D. P.; Ren, X. L.; Duan, B. T.; Chen, F.; Liu, C.; Xu, C. J.; Liu, L. [Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Shandong University at Weihai, Weihai 264209 (China); Hua, H.; Li, Z. Y. [School of Physics, and SK Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871 (China); Yao, J. M. [School of Physical Science and Technology, Southwest University, Chongqing 400715 (China); Zhu, L. H.; Wu, X. G.; Li, G. S.; Liu, Y.; Li, X. Q.; Zheng, Y.; Wang, L. L.; Wang, L. [China Institute of Atomic Energy, Beijing 102413 (China)

2010-11-15

116

118. VIEW OF NORTH ELEVATION FROM THE NORTHEAST (DUPLICATE OF ...  

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

118. VIEW OF NORTH ELEVATION FROM THE NORTHEAST (DUPLICATE OF HAER NO. PA-505-9) - Delaware County Electric Company, Chester Station, Delaware River at South end of Ward Street, Chester, Delaware County, PA

117

33 CFR 118.80 - Lights on bascule bridges.  

Code of Federal Regulations, 2010 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.80 Lights on bascule bridges. (a) Lift span lights. Each lift span of every bascule bridge...

2009-07-01

118

33 CFR 118.80 - Lights on bascule bridges.  

Code of Federal Regulations, 2010 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.80 Lights on bascule bridges. (a) Lift span lights. Each lift span of every bascule bridge...

2010-07-01

119

33 CFR 118.70 - Lights on swing bridges.  

Code of Federal Regulations, 2010 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.70 Lights on swing bridges. (a) Swing span lights on through bridges. Each swing span of every...

2009-07-01

120

33 CFR 118.100 - Retroreflective panels on bridge piers.  

Code of Federal Regulations, 2010 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.100 Retroreflective...or channel sides on bridges not required to have bridge lighting. Lateral significant red triangles and...

2010-07-01

121

33 CFR 118.100 - Retroreflective panels on bridge piers.  

Code of Federal Regulations, 2010 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.100 Retroreflective...or channel sides on bridges not required to have bridge lighting. Lateral significant red triangles and...

2009-07-01

122

33 CFR 118.70 - Lights on swing bridges.  

Code of Federal Regulations, 2010 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.70 Lights on swing bridges. (a) Swing span lights on through bridges. Each swing span of every...

2010-07-01

123

Atomic Mass and Nuclear Binding Energy for Sn-118 (Tin)  

NASA Astrophysics Data System (ADS)

This document is part of the Supplement containing the complete sets of data of Subvolume A `Nuclei with Z = 1 - 54' of Volume 22 `Nuclear Binding Energies and Atomic Masses' of Landolt-Brnstein - Group I `Elementary Particles, Nuclei and Atoms'. It provides atomic mass, mass excess, nuclear binding energy, nucleon separation energies, Q-values, and nucleon residual interaction parameters for atomic nuclei of the isotope Sn-118 (Tin, atomic number Z = 50, mass number A = 118).

Sukhoruchkin, S. I.; Soroko, Z. N.

124

Decays of 118In, 120In isomers to levels in 118Sn, 120Sn, and 122Sn  

NASA Astrophysics Data System (ADS)

The nuclear excited states of 118Sn, 120Sn, and 122Sn were studied by means of the decays of 4.45-min 118In isomer, 46.2-sec and 47.3-sec 120In isomers, and 10.3-sec and 10.8-sec 122In isomers, respectively. The In activities were produced by the (n,p) reaction with 14-MeV neutrons on enriched samples of 118Sn, 120Sn, and 122Sn. The ? rays, measured with a Ge(Li) detector, were incorporated into separate level schemes, each resulting from the decay of an individual In isomer. The experimental level schemes of 118Sn, 120Sn, and 122Sn were compared with level schemes calculated on the basis of a broken-pair model that includes up to two broken pairs in the 50

Raman, S.; Walkiewicz, T. A.; Multhauf, L. G.; Tirsell, K. G.; Bonsignori, G.; Allaart, K.

1988-03-01

125

The 120Sn(p,t) 118Sn Reaction:. Level Structure of 118Sn and Microscopic Dwba Calculations  

NASA Astrophysics Data System (ADS)

The 120Sn(p,t)118Sn reaction has been studied in a high-resolution experiment at an incident energy of 21 MeV. Differential cross-sections for 37 transitions to levels of 118Sn up to an excitation energy of about 3.6 MeV have been measured. Cluster and microscopic DWBA analysis and shell model calculations have been carried out.

Guazzoni, P.; Zetta, L.; Covello, A.; Gargano, A.; Bayman, B. F.; Graw, G.; Hertenberger, R.; Faestermann, T.; Wirth, H.-F.; Jaskla, M.

2008-04-01

126

Palladium and its alloys as membrane catalysts  

SciTech Connect

Possibilities have been examined for the use of selective transport of hydrogen through palladium alloy membranes in order to increase the efficiency of hydrogen recovery from gas mixtures and catalytic reactions in which hydrogen is consumed or formed. By varying the hydrogen concentration in the bulk and on the surface of a palladium alloy, it becomes possible to increase the selectivity of hydrogenation reactions. Continuous and semicontinuous methods have been developed for obtaining valuable products on membrane catalysts.

Gryaznov, V.M.

1983-05-01

127

Regio- and chemoselective palladium-catalyzed benzylallylation of activated olefins: the remarkable effect of palladium nanoparticles.  

PubMed

The palladium-catalyzed three-component reactions of benzyl halides, activated olefins, and allyltributylstannane were successfully conducted to produce the corresponding benzylallylation products in satisfactory to high yields. The benzylallylation reaction proceeded smoothly under mild conditions in the presence of palladium nanoparticles in tetrahydrofuran. PMID:23657474

Zhang, Xuan; Feng, Xiujuan; Yu, Xiaoqiang; He, Ren; Bao, Ming

2013-06-28

128

Electronic Structure of Palladium-Hydrogen and Palladium-Deuterium Rom Dehaas-van Alphen Experiments.  

National Technical Information Service (NTIS)

The electronic structure of a transition metal-hydrogen interstitial alloy was studied. Data on the Fermi surface and on the electron scattering rates of palladium-hydrogen and palladium-deuterium are obtained from de Haas-van Alphen experiments using a t...

W. J. Venema

1980-01-01

129

21 CFR 118.9 - Administration of the Salmonella Enteritidis (SE) prevention plan.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Administration of the Salmonella Enteritidis (SE) prevention plan. 118.9 Section 118...TRANSPORTATION OF SHELL EGGS § 118.9 Administration of the Salmonella Enteritidis (SE) prevention plan. You must...

2013-04-01

130

41 CFR 102-118.50 - How does my agency pay for transportation services?  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false How does my agency pay for transportation services? 102-118.50 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

131

41 CFR 102-118.95 - What forms can my agency use to pay transportation bills?  

Code of Federal Regulations, 2013 CFR

...false What forms can my agency use to pay transportation bills? 102-118.95 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

132

33 CFR 118.110 - Daymarks and lateral lighting on bridges.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Daymarks and lateral lighting on bridges. 118.110 Section 118.110 Navigation and Navigable...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.110...

2013-07-01

133

24 CFR 886.118 - Amount of housing assistance payments in projects receiving other HUD assistance.  

Code of Federal Regulations, 2013 CFR

...housing assistance payments in projects receiving other HUD assistance. 886.118 Section 886.118 Housing...ALLOCATIONS Additional Assistance Program for Projects With HUD-Insured and HUD-Held Mortgages § 886.118 Amount of housing...

2013-04-01

134

10 CFR 745.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2010 CFR

... Applications and proposals lacking definite plans for involvement of human subjects. 745.118 Section 745.118 Energy DEPARTMENT OF ENERGY PROTECTION OF HUMAN SUBJECTS § 745.118 Applications and proposals lacking definite...

2009-01-01

135

10 CFR 745.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2010 CFR

... Applications and proposals lacking definite plans for involvement of human subjects. 745.118 Section 745.118 Energy DEPARTMENT OF ENERGY PROTECTION OF HUMAN SUBJECTS § 745.118 Applications and proposals lacking definite...

2010-01-01

136

27 CFR 20.118 - Rubbing alcohol general-use formula.  

Code of Federal Regulations, 2013 CFR

... false Rubbing alcohol general-use formula. 20.118 Section 20.118 Alcohol...DISTRIBUTION AND USE OF DENATURED ALCOHOL AND RUM Formulas and Statements of Process General-Use Formulas § 20.118 Rubbing alcohol...

2013-04-01

137

38 CFR 16.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 16.118 Section 16.118...DEPARTMENT OF VETERANS AFFAIRS PROTECTION OF HUMAN SUBJECTS § 16.118 Applications and...lacking definite plans for involvement of human subjects. Certain types...

2013-07-01

138

7 CFR 1c.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 1c.118 Section 1c.118...Secretary of Agriculture PROTECTION OF HUMAN SUBJECTS § 1c.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-01-01

139

28 CFR 46.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 46.118 Section 46.118...OF JUSTICE (CONTINUED) PROTECTION OF HUMAN SUBJECTS § 46.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-07-01

140

15 CFR 27.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 27.118 Section 27.118...the Secretary of Commerce PROTECTION OF HUMAN SUBJECTS § 27.118 Applications and...lacking definite plans for involvement of human subjects. Certain types...

2013-01-01

141

33 CFR 118.110 - Daymarks and lateral lighting on bridges.  

Code of Federal Regulations, 2010 CFR

...false Daymarks and lateral lighting on bridges. 118.110 Section 118...HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.110 Daymarks and lateral lighting on bridges. (a) The District...

2009-07-01

142

33 CFR 118.110 - Daymarks and lateral lighting on bridges.  

Code of Federal Regulations, 2010 CFR

...false Daymarks and lateral lighting on bridges. 118.110 Section 118...HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.110 Daymarks and lateral lighting on bridges. (a) The District...

2010-07-01

143

Palladium Catalysis for Energy Applications  

SciTech Connect

Palladium (Pd) is an attractive catalyst for a range of new combustion applications comprising primary new technologies for future industrial energy needs, including gas turbine catalytic combustion, auto exhaust catalysts, heating and fuel cells. Pd poses particular challenges because it changes both chemical state and morphology as a function of temperature and reactant environment and those changes result in positive and negative changes in activity. Interactions with the support, additives, water, and contaminants as well as carbon formation have also been observed to affect Pd catalyst performance. This report describes the results of a 3.5 year project that resolves some of the conflicting reports in the literature about the performance of Pd-based catalysts.

Pfefferle, L. D.; Datye, A.

2001-03-01

144

A Novel Small Molecule FL118 That Selectively Inhibits Survivin, Mcl-1, XIAP and cIAP2 in a p53-Independent Manner, Shows Superior Antitumor Activity  

PubMed Central

Drug/radiation resistance to treatment and tumor relapse are major obstacles in identifying a cure for cancer. Development of novel agents that address these challenges would therefore be of the upmost importance in the fight against cancer. In this regard, studies show that the antiapoptotic protein survivin is a central molecule involved in both hurdles. Using cancer cell-based survivin-reporter systems (US 7,569,221 B2) via high throughput screening (HTS) of compound libraries, followed by in vitro and in vivo analyses of HTS-derived hit-lead compounds, we identified a novel anticancer compound (designated FL118). FL118 shows structural similarity to irinotecan. However, while the inhibition of DNA topoisomerase 1 activity by FL118 was no better than the active form of irinotecan, SN-38 at 1 M, FL118 effectively inhibited cancer cell growth at less than nM levels in a p53 status-independent manner. Moreover, FL118 selectively inhibited survivin promoter activity and gene expression also in a p53 status-independent manner. Although the survivin promoter-reporter system was used for the identification of FL118, our studies revealed that FL118 not only inhibits survivin expression but also selectively and independently inhibits three additional cancer-associated survival genes (Mcl-1, XIAP and cIAP2) in a p53 status-independent manner, while showing no inhibitory effects on control genes. Genetic silencing or overexpression of FL118 targets demonstrated a role for these targets in FL118s effects. Follow-up in vivo studies revealed that FL118 exhibits superior antitumor efficacy in human tumor xenograft models in comparison with irinotecan, topotecan, doxorubicin, 5-FU, gemcitabine, docetaxel, oxaliplatin, cytoxan and cisplatin, and a majority of mice treated with FL118 showed tumor regression with a weekly 4 schedule. FL118 induced favorable body-weight-loss profiles (temporary and reversible) and was able to eliminate large tumors. Together, the molecular targeting features of FL118 plus its superior antitumor activity warrant its further development toward clinical trials.

Cheng, Qiuying; Keefe, James T.; Rustum, Youcef M.; Li, Fengzhi

2012-01-01

145

Recoil products from p+{sup 118}Sn and d+{sup 118}Sn at 3.65 GeV/A  

SciTech Connect

The recoil properties of the product nuclei from the interaction of 3.65-GeV/nucleon protons and deuterons from the Nuclotron and Synchrophasotron of the Laboratory of High Energies (LHE), Joint Institute for Nuclear Research (JINR) at Dubna, with a {sup 118}Sn target have been studied using catcher foils. The experimental data were analyzed using the mathematical formalism of the standard two-step vector model. The analysis of kinematical characteristics of the light and medium-mass reaction products confirmed the contribution of fragmentation (or multifragmentation) processes in the production of these nuclei. The comparison of the results for protons and deuterons was made. The longitudinal momenta transferred to the target in the interaction with protons and deuterons were similar and was shown to depend only on the velocity, but not on the mass of projectile. Three different Los Alamos versions of the quark-gluon-string model (LAQGSM) were used for the discussion of our experimental results.

Balabekyan, A. R., E-mail: balabekyan@ysu.am; Danagulyan, A. S.; Drnoyan, J. R.; Hovhannisyan, G. H. [Yerevan State University (Armenia); Demekhina, N. A. [Yerevan Physics Institute (Armenia); Adam, J.; Kalinnikov, V. G.; Krivopustov, M. I.; Pronskikh, V. S.; Stegailov, V. I.; Solnyshkin, A. A.; Chaloun, P.; Tsoupko-Sitnikov, V. M. [Joint Institute for Nuclear Research (Russian Federation); Mashnik, S. G. [Los Alamos National Laboratory (United States); Gudima, K. K. [Academy of Science of Moldova, Institute of Applied Physics (Moldova, Republic of)

2007-11-15

146

Palladiumsilver composite membranes by electroless plating technique  

Microsoft Academic Search

The exact conditions for deposition of pure palladium and pure silver membranes as well as simultaneous, co-deposition of palladium and silver have been identified for a hydrazine-based plating bath containing both palladium and silver precursors. The electroless plating kinetics have been determined for co-deposition of palladium and silver from the mixed plating bath. A mathematical model has been developed to

Y. S. Cheng; K. L. Yeung

1999-01-01

147

Preparation and characterization of a composite palladium-ceramic membrane  

Microsoft Academic Search

Composite palladium--ceramic membranes with palladium films ranging from 11.4 to 20 [mu]m were made by depositing palladium on the inside surface of asymmetric tubular ceramic membranes. Electroless plating was used to deposit the palladium film. Membranes were characterized by conducting permeability experiments with hydrogen, nitrogen, and helium at temperatures from 723 to 913 K and feed pressures from 160 to

John P. Collins

1993-01-01

148

ENCAPSULATION OF PALLADIUM IN POROUS WALL HOLLOW GLASS MICROSPHERES  

SciTech Connect

A new encapsulation method was investigated in an attempt to develop an improved palladium packing material for hydrogen isotope separation. Porous wall hollow glass microspheres (PWHGMs) were produced by using a flame former, heat treating and acid leaching. The PWHGMs were then filled with palladium salt using a soak-and-dry process. The palladium salt was reduced at high temperature to leave palladium inside the microspheres.

Heung, L; George Wicks, G; Ray Schumacher, R

2008-04-09

149

Role of palladium at superfine aluminum powder combustion in air  

Microsoft Academic Search

Palladium influence to combustion steps, temperature regime and final products composition by superfine aluminum powder combustion in air was studied. It is shown, that palladium, possibly, doesn't participate in nitrogen fixation mechanism; but microstructure characteristics of combustion products shows that they forms by palladium presence: significant part of combustion products stabilize as needle polycrystals.

A. P. Ilyin; A. A. Gromov; E. M. Popenko

1999-01-01

150

Oxidation of methane over palladium catalysts: effect of the support  

Microsoft Academic Search

This work is focused on the deep catalytic oxidation of methane over supported palladium catalysts. The influences of the metal loading, oxidation state of palladium, nature of supports, presence of promoters in the supports (for zirconia-based supports), and thermal stability have been studied experimentally. Catalysts were prepared by incipient wetness of commercially available supports with aqueous solutions of palladium nitrate.For

Lara S. Escandn; Salvador Ordez; Aurelio Vega; Fernando V. D??ez

2005-01-01

151

Effect of Fretting on the Contact Resistance of Palladium  

Microsoft Academic Search

The fretting of palladium contacts was studied at conditions relevant to their use in separable electronic connectors. Wrought, clad, and electroplated palladium mated to wrought palladium develop high contact resistance due to the formation of friction polymer. This can occur in ordinary room air which contains traces of organic air pollutants. Contact resistance changes diminish as force is increased. Static

MORTON ANTLER; EDWARD S. SPROLES

1982-01-01

152

40 CFR 86.118-00 - Dynamometer calibrations.  

Code of Federal Regulations, 2010 CFR

...Emission Regulations for 1977 and Later Model Year New Light-Duty Vehicles and New Light-Duty Trucks and New Otto-Cycle Complete Heavy-Duty Vehicles; Test Procedures § 86.118-00 Dynamometer calibrations. (a) The dynamometer...

2009-07-01

153

29 CFR 780.118 - Harvesting.  

Code of Federal Regulations, 2010 CFR

...Harvestingâ of Commodities § 780.118 Harvesting. (a) The term Harvesting as used in section 3(f) includes...concentration point on the farm are engaged in Harvesting (Vives v. Serralles, 145 F. 2d...

2009-07-01

154

21 CFR 118.12 - Enforcement and compliance.  

Code of Federal Regulations, 2013 CFR

...STORAGE, AND TRANSPORTATION OF SHELL EGGS § 118.12 Enforcement and compliance...for the diversion or destruction of shell eggs and for informal hearings under the PHS Act: (1) Upon a finding that any shell eggs have been produced or held in...

2013-04-01

155

118. #3 SHAFT ALLEY (PROPELLER SHAFT) FORWARD LOOKING AFT ...  

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

118. #3 SHAFT ALLEY (PROPELLER SHAFT) - FORWARD LOOKING AFT ON PORT SIDE SHOWING THE SHAFT, SHAFT PACKING GLAND, SHAFT SEAL COOLING WATER LINE AND FIVE INCH FIRE MAIN PIPING. - U.S.S. HORNET, Puget Sound Naval Shipyard, Sinclair Inlet, Bremerton, Kitsap County, WA

156

33 CFR 118.60 - Characteristics of lights.  

Code of Federal Regulations, 2013 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.60 Characteristics of lights...sufficient candlepower as to be visible against the background lighting at a distance of at least 2,000 yards 90 percent of...

2013-07-01

157

Phthalocyanine-peptide conjugates via palladium-catalyzed cross-coupling reactions.  

PubMed

Phthalocyanines (Pc) were conjugated with peptide moieties to improve their target selectivity for potential use as fluorescence and/or positron emission tomography (PET) probes in medical imaging. Three synthetic methods based on palladium-catalyzed cross-coupling reactions (Sonogashira, Buchwald-Hartwig, and Suzuki-Miyaura) were investigated. Using these methods, a series of peptides monofunctionalized with Pc at the N/C-terminal position or on a phenylalanine side chain was obtained in good yields and characterized. PMID:21302913

Ali, Hasrat; Ait-Mohand, Samia; Gosselin, Simon; van Lier, Johan E; Gurin, Brigitte

2011-02-08

158

Sputtered thin-film pH electrodes of platinum, palladium, ruthenium, and iridium oxides  

Microsoft Academic Search

Thin-film metal oxides have been investigated for use as pH electrodes. These materials may have potential for measuring pH under conditions that are not favorable for glass electrodes. Reactive sputtering of platinum, palladium, ruthenium, and iridium metal targets in argon-oxygen atmospheres is used to produce 1 ?m thick electrodes on alumina and silicon substrates. The structure of the deposits is

Kenneth G. Kreider; Michael J. Tarlov; James P. Cline

1995-01-01

159

Iminophosphinite pincer palladium complexes: Synthesis and application  

Microsoft Academic Search

Iminophosphinite pincer palladium complexes were synthesized and evaluated as potential catalysts in the Suzuki coupling reactions of phenylboronic acid and various aryl halides. The iminophosphinite ligands were synthesized through condensation reactions between 2-bromo-3-hydroxybenzaldehyde and 2,4,6-trimethylaniline and 2,6-diisopropylaniline, followed by phosphorylation with chlorodiphenylphosphine and chlorodicyclohexylphosphine. Oxidative addition of the pincer ligands to Pd2(dba)3 afforded palladium iminophosphinite complexes [(2-(CHNR)-6-(OPR?2)C6H3)PdBr] (R=2,6-iPr2C6H3, R?=Ph (2a)

Jake Yorke; Jessica Sanford; Andreas Decken; Aibing Xia

2010-01-01

160

Thermodynamic stability of palladium alloys: Part I: The palladium-niobium system  

NASA Astrophysics Data System (ADS)

The palladium activities of 12 palladium-niobium alloys (compositions from 60Pd40Nb to 97Pd3Nb) have been determined experimentally with a twin-chamber Knudsen cell mass spectrometer between 1450 and 1750 K. From the measured aPd data, other relevant thermo-dynamic properties are calculated. The ?Gf o and ?Hf o of Pd-Nb alloys thus obtained are com-pared with the published values estimated on the basis of empirical models. The results of the present work show a strong attractive interaction in the solid state between the palladium atoms and the niobium atoms. The measured palladium activities show a strong negative deviation from the ideal solution behavior.

Stickney, M. J.; Chandrasekharaiah, M. S.; Gingerich, K. A.; Speed, J. A.

1991-09-01

161

Microcalorimetric study of the absorption of hydrogen by palladium powders and carbon-supported palladium particles  

SciTech Connect

The adsorption and absorption of hydrogen on and in various forms of supported and unsupported palladium were studied using heat-flow calorimetry. The supports were found to have a tremendous effect on the nature of the hydrogen-palladium system. For palladium supported on silica or alumina, irreversible chemisorption was found to take place and be followed by bulk hydride formation. In contrast, it was found for carbon-supported particles that chemisorption does not take place and that the observed behavior could be explained by a model using only bulk hydride formation. It was further found that the heat of formation and equilibrium for [beta]-hydride formation are functions of particle size. It was not clear if surface adsorption takes place on unsupported palladium. 37 refs., 9 figs., 2 tabs.

Wunder, R.W.; Cobes, J.W.; Phillips, J.; Radovic, L.R. (Pennsylvania State Univ., University Park (United States)); Lopez Peinado, A.J. (U.N.E.D., Madrid (Spain)); Carrasco-Marin, F. (Universidad de Granada (Spain))

1993-04-01

162

Life as a sober citizen: Aldo Leopold's Wildlife Ecology 118  

NASA Astrophysics Data System (ADS)

This historic case study addressed the issue of the lack of citizen action toward environmentally responsible behavior. Although there have been studies regarding components of environmental responsible behavior [ERB], there has been little focus on historic models of exemplary figures of ERB. This study examined one of the first conservation courses in the United States, Wildlife Ecology 118, taught by Aldo Leopold (1887--1948) for 13 years at the University of Wisconsin. Today, Aldo Leopold is recognized as an exemplary conservationist whose land ethic is cited as providing the ecological approach needed for understanding the complex issues of modern society. The researcher conjectured that examination of one of the first environmental education courses could support and strengthen environmental education practices by providing a heuristic perspective. The researcher used two different strategies for analysis of the case. For Research Question One---"What were Leopold's teaching strategies in Wildlife Ecology 118?"---the researcher used methods of comparative historical analysis. The researcher examined the learning outcomes that Leopold used in Wildlife Ecology 118 and compared them against a rubric of the Four Strands for Environmental Education (North American Association for Environmental Education [NAAEE], 1999). The Four Strands for Environmental Education are the current teaching strategies used by educators. The results indicated that Wildlife Ecology 118 scored high in Knowledge of Processes and Systems and Environmental Problem Solving strands. Leopold relied on historic case examples and animal biographies to build stories that engaged students. Field trips gave students practical experience for environmental knowledge with special emphasis on phenology. For Research Question Two---"What was the context of the lessons in Wildlife Ecology 118?"---the researcher used environmental history methods for analysis. Context provided the knowledge and understanding of Leopold's choices for developing lessons that he thought would engage students to become environmentally responsible citizens. The contexts were grouped into four categories: (a) work and research related, (b) professional development, (c) leisure and, (d) public service. There were five themes that emerged from the course contexts: (a) case histories, (b) animal biographies, (c) phenology application, (d) food chains, and (e) ecosystems. The results of the study indicated that Wildlife Ecology 118 ranks high in areas of environmental problem solving and knowledge of processes and systems. Both of the areas are often difficult for educators to incorporate in their lessons. Through case histories, animal biographies, phenology, ecological diagrams, ecosystem comparisons and field trips, Leopold provides many examples that can be easily updated and used in current classroom practices, both in K--12 and college levels.

Theiss, Nancy Stearns

163

Mitochondrial DNA sequences for 118 individuals from northeastern Spain  

Microsoft Academic Search

A population database was generated from 118 unrelated Caucasoid individuals living in Spain. Sequence polymorphisms of the\\u000a mitochondrial DNA (mtDNA) control region, hypervariable regions I and II (HVRI and HVRII) were determined using the polymerase\\u000a chain reaction (PCR) and direct sequencing. A total of 102 different sequences were found as defined by 105 variable positions.\\u000a The most common sequence occurred

M. Crespillo; J. A. Luque; M. Paredes; R. Fernndez; E. Ramrez; J. L. Valverde

2000-01-01

164

Adsorption of palladium ions by magnetite nanoparticles  

Microsoft Academic Search

Platinum group metals (PGMs) which are widely used in car catalytic converters have been in high demand, in spite of a low natural abundance in the earth crust. Due to scarcity and high value of these metals, there is an increased interest towards their recovery from wastes such as spent catalyst. Palladium togheter with platinum is the metal more used

D. Jimenez de Aberasturi; I. Ruiz de Larramendi; R. Pinedo; I. Gil de Muro

2010-01-01

165

Migration behavior of palladium in UO2.  

National Technical Information Service (NTIS)

Palladium (Pd) is one of the interesting fission products in both HTGR and LWR fuel technologies. It is easily released from UO(sub 2) kernels in HTGR coated fuel particles and reacts with SiC coating layer. Also, Pd is one of the metal fission products c...

M. Takada H. Ohashi T. Morozumi T. Ogawa K. Fukuda

1990-01-01

166

Formation and Decomposition of Palladium Hvdride Particles  

Microsoft Academic Search

Nanoscale changes in surface structure that accompany the low temperature exposure of palladium to hydrogen are reported. Field Emission Microscopy, a method for rapid in situ imaging of surfaceprocesses, has been used to exam- inepalladium tips of radius - 200 nm, produced by a novel technique. Images are presented of the initial stages of the uptake of hydrogen. Subsurface hydrides

D. Cobden; B. E. Nieuwenhuys; Y V. Gorodetskii; Y N. Parmon

167

Measurements of helium in electrolyzed palladium  

SciTech Connect

The result of a double-blind, cold fusion experiment are reported, in which six laboratories measured the helium content of five identically shaped 2-mm-diam {times} 10-cm-long palladium rods supplied by Fleischmann and Pons. Three rods were initially implanted with {sup 4}He. Before analysis, three of the rods had served as cathodes during electrolysis in cold fusion experiments: two in 0.1 M LiOD, and one in 0.1 M LiOH. The other two, one implanted and one not, served as references. The major observations reported on in this paper are as follows: All the materials, including the as-received palladium stock, contained easily measured quantities of {sup 4}He, well above amounts normally found in high-purity palladium. The {sup 4}He could be totally removed from at least two of the materials, including the as-received palladium stock, by surface etching the samples to a depth of {approximately}25 {mu}m. Helium implanted by alpha-particle bombardment remained in the electrodes through out the electrolysis. No {sup 3}He was measured above detection limits in any of the materials by any of the six laboratories.

Morrey, J.R.; Jones, R.H.; Wacker, J.F. (Pacific Northwest Lab., Richland, WA (United States)); Caffee, M.W.; Hudson, G.B.; Ruiz, B.V. (Lawrence Livermore National Lab., CA (United States)); Farrar, H.; Oliver, B.M. (Pacific Northwest Lab., Richland, WA (United States)). Rocketdyne Div.); Hoffman, N.J. (Rockwell International Corp., Canoga Park, CA (United States). Energy Technology Engineering Center); Kurz, M.D. (Woods Hole Oceanographic Institution, MA (United States)); Lupton, J. (California Univ., Santa Barbara, CA (United States). Marine Science Inst.); van Veen, A. (Delft Univ. of Technology, Interfaculty Reactor Inst., Mekelweg 15 NI-2629JB Delft (NL))

1990-12-01

168

Hydrogen and Palladium Foil: Two Classroom Demonstrations  

ERIC Educational Resources Information Center

|In these two classroom demonstrations, students observe the reaction between H[subscript 2] gas and Pd foil. In the first demonstration, hydrogen and palladium combine within one minute at 1 atm and room temperature to yield the non-stoichiometric, interstitial hydride with formula close to the maximum known value, PdH[subscript 0.7]. In the

Klotz, Elsbeth; Mattson, Bruce

2009-01-01

169

Growth and sedimentation of fine particles produced in aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation.  

National Technical Information Service (NTIS)

It is known that palladium and palladium-silver fine particles were formed from deaerated aqueous solutions of palladium sulfate and palladium sulfate-silver sulfate induced by gamma-ray irradiation. Changes in particle size and with amount of particles i...

M. Hatada C. D. Jonah

1994-01-01

170

Microwave-assisted synthesis of palladium nanocubes and nanobars  

Microsoft Academic Search

Microwave was employed in the shape-controlled synthesis of palladium nanoparticles. Palladium nanocubes and nanobars with a mean size of about 23.8nm were readily synthesized with H2PdCl4 as a precursor, tetraethylene glycol (TEG) as both a solvent and a reducing agent in the presence of PVP and CTAB in 80s under microwave irradiation. The structures of the as-prepared palladium nanoparticles were

Yanchun Yu; Yanxi Zhao; Tao Huang; Hanfan Liu

2010-01-01

171

Characterization of palladium nanoparticles protected with polymer as hydrogenation catalyst  

Microsoft Academic Search

Suspensions of palladium nanoparticles protected with poly(N-vinyl-2-pyrrolidone) (PVP) were prepared by refluxing the solution of palladium(II) chloride in methanol in the presence of PVP with various weight-average molecular weight (MW = 6 000, 25 000, 175 000 and 574 000). The average diameter of palladium nanoparticles determined by transmission electron microscopy increased from 2.0 to 2.5 nm with increasing MW

Hidefumi Hirai; Noboru Yakura; Yoko Seta; Shinya Hodoshima

1998-01-01

172

Application of recoverable nanosized palladium(0) catalyst in Sonogashira reaction  

Microsoft Academic Search

In the absence of ligand, copper and amine, a recoverable nanoparticle palladium(0) catalyzed Sonogashira reaction of aryl iodides and bromides with terminal alkynes was developed. The protocol involved the use of an environmental-friendly reaction system with ethanol as the solvent, potassium carbonate as a base, and poly(vinylpyrrolidone) (PVP) supported nanosized palladium metal colloids as the catalyst. The palladium metal was

Pinhua Li; Lei Wang; Hongji Li

2005-01-01

173

A near-infrared and ratiometric fluorescent chemosensor for palladium.  

PubMed

A near-infrared chemosensor for palladium based on the Tsuji-Trost reaction was developed. It displayed specific and ratiometric fluorescent responses toward palladium with a distinct color change from green to blue in aqueous media. PEG400 was employed as the reducing agent and palladium ligand instead of water-insoluble triphenylphosphine. The chemosensor's bioimaging potential was demonstrated by in vitro and in vivo experiments. PMID:23652163

Wang, Junyu; Song, Fengling; Wang, Jingyun; Peng, Xiaojun

2013-07-01

174

Laser processing of palladium for selective electroless copper plating  

Microsoft Academic Search

Various methods for laser-assisted activation of dielectric layers for selective electroless copper plating are investigated. The direct writing of palladium feature by the Ar+ laser-induced pyrolytic decomposition of an organometallic palladium resin on polyimide and Si3N4 leads to active Pd sites which are selectively copper plated. Other laser-induced processes for selective palladium seeding are studied. It is also shown that

Marie-Helene Bernier; Ricardo Izquierdo; Michel Meunier

1994-01-01

175

Process for recovery of palladium from nuclear fuel reprocessing wastes  

DOEpatents

Palladium is selectively removed from spent nuclear fuel reprocessing waste by adding sugar to a strong nitric acid solution of the waste to partially denitrate the solution and cause formation of an insoluble palladium compound. The process includes the steps of: (a) adjusting the nitric acid content of the starting solution to about 10 M, (b) adding 50% sucrose solution in an amount sufficient to effect the precipitation of the palladium compound, (c) heating the solution at reflux temperature until precipitation is complete, and (d) centrifuging the solution to separate the precipitated palladium compound from the supernatant liquid.

Campbell, David O. (Oak Ridge, TN); Buxton, Samuel R. (Wartburg, TN)

1981-01-01

176

Process for recovery of palladium from nuclear fuel reprocessing wastes  

DOEpatents

Palladium is selectively removed from spent nuclear fuel reprocessing waste by adding sugar to a strong nitric acid solution of the waste to partially denitrate the solution and cause formation of an insoluble palladium compound. The process includes the steps of: (a) adjusting the nitric acid content of the starting solution to about 10 M; (b) adding 50% sucrose solution in an amount sufficient to effect the precipitation of the palladium compound; (c) heating the solution at reflux temperature until precipitation is complete; and (d) centrifuging the solution to separate the precipitated palladium compound from the supernatant liquid.

Campbell, D.O.; Buxton, S.R.

1980-06-16

177

21 CFR 118.10 - Recordkeeping requirements for the Salmonella Enteritidis (SE) prevention plan.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Recordkeeping requirements for the Salmonella Enteritidis (SE) prevention plan. 118.10 Section...SHELL EGGS § 118.10 Recordkeeping requirements for the Salmonella Enteritidis (SE) prevention plan. (a) Records:...

2013-04-01

178

21 CFR 118.8 - Testing methodology for Salmonella Enteritidis (SE).  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Testing methodology for Salmonella Enteritidis (SE). 118.8 Section... § 118.8 Testing methodology for Salmonella Enteritidis (SE). (a) Testing...Environmental Sampling and Detection of Salmonella in Poultry Houses, April...

2013-04-01

179

41 CFR 102-118.60 - To what extent must my agency use electronic commerce?  

Code of Federal Regulations, 2013 CFR

...what extent must my agency use electronic commerce? 102-118.60 Section 102-118...what extent must my agency use electronic commerce? Your agency must use electronic commerce in all areas of your transportation...

2013-01-01

180

21 CFR 118.6 - Egg testing for Salmonella Enteritidis (SE).  

Code of Federal Regulations, 2013 CFR

...Drugs 2 2013-04-01 2013-04-01 false Egg testing for Salmonella Enteritidis (SE). 118.6... PRODUCTION, STORAGE, AND TRANSPORTATION OF SHELL EGGS § 118.6 Egg testing for Salmonella Enteritidis (SE)....

2013-04-01

181

25 CFR 900.118 - Do these construction contract regulations apply to construction management services?  

Code of Federal Regulations, 2013 CFR

...âconstruction contractâ regulations apply to construction management services? 900.118 Section...SELF-DETERMINATION AND EDUCATION ASSISTANCE ACT Construction § 900.118 Do these construction contract regulations apply to...

2013-04-01

182

40 CFR 26.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 26.118 Section 26.118...PROTECTION AGENCY GENERAL PROTECTION OF HUMAN SUBJECTS Basic EPA Policy for Protection of Subjects in Human Research Conducted or Supported by EPA...

2013-07-01

183

14 CFR 1230.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 1230.118 Section 1230...AND SPACE ADMINISTRATION PROTECTION OF HUMAN SUBJECTS § 1230.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-01-01

184

10 CFR 745.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 745.118 Section 745... DEPARTMENT OF ENERGY PROTECTION OF HUMAN SUBJECTS § 745.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-01-01

185

22 CFR 225.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 225.118 Section 225...INTERNATIONAL DEVELOPMENT PROTECTION OF HUMAN SUBJECTS § 225.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-04-01

186

16 CFR 1028.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 1028.118 Section 1028...SAFETY COMMISSION GENERAL PROTECTION OF HUMAN SUBJECTS § 1028.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-01-01

187

32 CFR 219.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...lacking definite plans for involvement of human subjects. 219.118 Section 219...CONTINUED) MISCELLANEOUS PROTECTION OF HUMAN SUBJECTS § 219.118 Applications...lacking definite plans for involvement of human subjects. Certain types...

2013-07-01

188

34 CFR 97.118 - Applications and proposals lacking definite plans for involvement of human subjects.  

Code of Federal Regulations, 2013 CFR

...proposals lacking definite plans for involvement of human subjects. 97.118 Section 97.118...Secretary, Department of Education PROTECTION OF HUMAN SUBJECTS Federal Policy for the Protection of Human Subjects (Basic ED Policy for...

2013-07-01

189

7 CFR 1.118 - Appeal of initial adverse agency determination on correction or amendment.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Appeal of initial adverse agency determination on correction or amendment. 1.118...REGULATIONS Privacy Act Regulations § 1.118 Appeal of initial adverse agency determination on correction or amendment....

2012-01-01

190

33 CFR 118.75 - Lights on single-opening drawbridges.  

Code of Federal Regulations, 2013 CFR

...75 Section 118.75 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.75 Lights on single-opening drawbridges. (a) Bridges in this class. Bridges of...

2013-07-01

191

33 CFR 118.95 - Lights on structures not part of a bridge or approach structure.  

Code of Federal Regulations, 2010 CFR

...95 Section 118.95 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.95 Lights on structures not part of a bridge or approach structure. Lights on...

2010-07-01

192

33 CFR 118.95 - Lights on structures not part of a bridge or approach structure.  

Code of Federal Regulations, 2010 CFR

...95 Section 118.95 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.95 Lights on structures not part of a bridge or approach structure. Lights on...

2009-07-01

193

Intramolecular reductive elimination of methane from a dinuclear palladium complex containing methyl and hydride on adjacent palladium centers  

SciTech Connect

The preparation, isolation, and determination of structure of a dinuclear palladium complex containing methyl and hydride on adjacent palladium atoms its facile 1,1-dinuclear intramolecular elimination of methane are reported. The complex was isolated as its tetraphenylborate salt and was fully characterized including its x-ray structure. Reductive elimination from the deuterated complex containing deutride on one palladium and trideuteriomethyl on the other gave a quantitative yield of methane. 16 references, 3 figures.

Kellenberger, B.; Young, S.J.; Stille, J.K.

1985-01-01

194

21 CFR 118.7 - Sampling methodology for Salmonella Enteritidis (SE).  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Sampling methodology for Salmonella Enteritidis (SE). 118.7 Section 118.7 Food and...TRANSPORTATION OF SHELL EGGS § 118.7 Sampling methodology for Salmonella Enteritidis (SE). (a) Environmental...

2013-04-01

195

21 CFR 118.5 - Environmental testing for Salmonella Enteritidis (SE).  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Environmental testing for Salmonella Enteritidis (SE). 118.5 Section 118.5 Food and...TRANSPORTATION OF SHELL EGGS § 118.5 Environmental testing for Salmonella Enteritidis (SE). (a) Environmental testing when...

2013-04-01

196

33 CFR 118.95 - Lights on structures not part of a bridge or approach structure.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Lights on structures not part of a bridge or approach structure. 118.95 Section 118.95...Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.95 Lights...

2013-07-01

197

21 CFR 118.1 - Persons covered by the requirements in this part.  

Code of Federal Regulations, 2013 CFR

...as defined in § 118.3, you must comply only with the refrigeration requirements in § 118.4(e) for production of eggs on...processing or egg products facilities, you must comply with the refrigeration requirements in § 118.4(e). This section applies...

2013-04-01

198

Severity Indices of Personality Problems (SIPP-118) in Adolescents: Reliability and Validity  

ERIC Educational Resources Information Center

The Severity Indices of Personality Problems (SIPP-118; Verheul et al., 2008) is a self-report questionnaire focusing on core components of (mal)adaptive personality functioning. The SIPP-118 was developed and validated in an adult population. In adult populations, the 16 facets of the SIPP-118 fit into 5 higher order domains: self-control,

Feenstra, Dine J.; Hutsebaut, Joost; Verheul, Roel; Busschbach, Jan J. V.

2011-01-01

199

37 CFR 1.18 - Patent post allowance (including issue) fees.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Patent post allowance (including issue) fees. 1.18 Section 1.18 Patents, Trademarks...Money § 1.18 Patent post allowance (including issue) fees. (a) Issue fee for issuing each original patent, except a...

2013-07-01

200

Palladium-catalyzed amination of aryl nonaflates.  

PubMed

The first detailed study of the palladium-catalyzed amination of aryl nonaflates is reported. Use of ligands 2-4 and 6 allows for the catalytic amination of electron-rich and -neutral aryl nonaflates with both primary and secondary amines. With use of Xantphos 5, the catalytic amination of a variety of functionalized aryl nonaflates resulted in excellent yields of anilines; even 2-carboxymethyl aryl nonaflate is effectively coupled with a primary alkylamine. Moderate yields were obtained when coupling halo-aryl nonaflates with a variety of amines, where in most cases the aryl nonaflate reacted in preference to the aryl halide. Overall, aryl nonaflates are an effective alternative to triflates in palladium-catalyzed C-N bond-forming processes due to their increased stability under the reaction conditions. PMID:14656080

Anderson, Kevin W; Mendez-Perez, Maria; Priego, Julian; Buchwald, Stephen L

2003-12-12

201

Silver-Palladium Surfaces Inhibit Biofilm Formation  

Microsoft Academic Search

Undesired biofilm formation is a major concern in many areas. In the present study, we investigated biofilm-inhibiting properties of a silver-palladium surface that kills bacteria by generating microelectric fields and electrochemical redox processes. For evaluation of the biofilm inhibition efficacy and study of the biofilm inhibition mechanism, the silver-sensitive Escherichia coli J53 and the silver-resistant E. coli J53(pMG101) strains were

Wen-Chi Chiang; Casper Schroll; Lisbeth Rischel Hilbert; P. Moller; Tim Tolker-Nielsen

2009-01-01

202

Novel heterometallic palladiumsilver complex  

Microsoft Academic Search

The reaction between Pd3(OOCMe)6 and Ag2(OOCMe)2 afforded the first palladiumsilver heterometallic acetate-bridged complex PdII[(?-OOCMe)2AgI(HOOCMe)2]2 (1). The molecular geometry and electronic structure of 1 were studied by single-crystal XRD and quantum-chemical DFT calculations. Thermal transformations of 1in vacuo and under Ar, H2 produced PdAg alloy nanoparticles characterized with powder XRD and EXAFS.

Natalia Yu. Kozitsyna; Sergei E. Nefedov; Alla P. Klyagina; Alexander A. Markov; Zhanna V. Dobrokhotova; Yuri A. Velikodny; Dmitry I. Kochubey; Tatiana S. Zyubina; Alexander E. Gekhman; Michael N. Vargaftik; Ilya I. Moiseev

2011-01-01

203

Palladium catalysts on activated carbon supports  

Microsoft Academic Search

A number of activated carbons produced from peat, coconut shell, and by pyrolysis of hydrocarbons have been subjected to treatment with oxygen, chlorine, hydrogen or ammonia at elevated temperatures to get a representative series of catalyst supports differing in porous structure and surface chemistry (characterized by nitrogen adsorption and selective titrations). Palladium was deposited from anionic (H2PdCl4), neutral (Pd(OAc)2, in

M. Gurrath; T. Kuretzky; H. P. Boehm; L. B. Okhlopkova; A. S. Lisitsyn; V. A. Likholobov

2000-01-01

204

Silver-Palladium Surfaces Inhibit Biofilm Formation?  

PubMed Central

Undesired biofilm formation is a major concern in many areas. In the present study, we investigated biofilm-inhibiting properties of a silver-palladium surface that kills bacteria by generating microelectric fields and electrochemical redox processes. For evaluation of the biofilm inhibition efficacy and study of the biofilm inhibition mechanism, the silver-sensitive Escherichia coli J53 and the silver-resistant E. coli J53[pMG101] strains were used as model organisms, and batch and flow chamber setups were used as model systems. In the case of the silver-sensitive strain, the silver-palladium surfaces killed the bacteria and prevented biofilm formation under conditions of low or high bacterial load. In the case of the silver-resistant strain, the silver-palladium surfaces killed surface-associated bacteria and prevented biofilm formation under conditions of low bacterial load, whereas under conditions of high bacterial load, biofilm formation occurred upon a layer of surface-associated dead bacteria.

Chiang, Wen-Chi; Schroll, Casper; Hilbert, Lisbeth Rischel; M?ller, Per; Tolker-Nielsen, Tim

2009-01-01

205

Silver-palladium surfaces inhibit biofilm formation.  

PubMed

Undesired biofilm formation is a major concern in many areas. In the present study, we investigated biofilm-inhibiting properties of a silver-palladium surface that kills bacteria by generating microelectric fields and electrochemical redox processes. For evaluation of the biofilm inhibition efficacy and study of the biofilm inhibition mechanism, the silver-sensitive Escherichia coli J53 and the silver-resistant E. coli J53[pMG101] strains were used as model organisms, and batch and flow chamber setups were used as model systems. In the case of the silver-sensitive strain, the silver-palladium surfaces killed the bacteria and prevented biofilm formation under conditions of low or high bacterial load. In the case of the silver-resistant strain, the silver-palladium surfaces killed surface-associated bacteria and prevented biofilm formation under conditions of low bacterial load, whereas under conditions of high bacterial load, biofilm formation occurred upon a layer of surface-associated dead bacteria. PMID:19151185

Chiang, Wen-Chi; Schroll, Casper; Hilbert, Lisbeth Rischel; Mller, Per; Tolker-Nielsen, Tim

2009-01-16

206

Heck reaction catalysed by pyridyl-imine palladium(0) and palladium(II) complexes  

Microsoft Academic Search

Three different palladium(II) complexes Pd(NN?)Cl2 and two different palladium(0) complexes Pd(NN?)(dmfu) (dmfu=dimethylfumarate) containing NN? pyridyl-imine ligands, have been prepared and used as pre-catalysts for the coupling between iodobenzene and methyl acrylate (Meac) (Heck reaction). All the reactions have been conducted in DMF at 80C, using Et3N as base and a Pd:PhI:Meac:Et3N=1:1000:1100:1000 molar ratio. In all cases the complete conversion of

Paolo Pelagatti; Mauro Carcelli; Mirco Costa; Sandra Ianelli; Corrado Pelizzi; Dominga Rogolino

2005-01-01

207

Palladium-catalyzed glycal imidate rearrangement: formation of alpha- and beta-N-glycosyl trichloroacetamides.  

PubMed

A novel palladium(II)-catalyzed stereoselective synthesis of alpha- and beta-N-glycosyl trichloroacetamides has been developed. The alpha- and beta-selectivity at the anomeric carbon depends on the nature of the palladium-ligand catalyst. While the cationic palladium(II) promotes the alpha-selectivity, the neutral palladium(II) favors the beta-selectivity. PMID:17880097

Yang, Jaemoon; Mercer, Gregory J; Nguyen, Hien M

2007-09-19

208

Palladium-based hydrogen sensing for monitoring of ageing materials  

Microsoft Academic Search

Palladium and its alloys show a high and selective affinity for hydrogen, resulting in a volume expansion. We report on development work using fibre Bragg gratings attached to palladium tubes to monitor strain resulting from hydrogen uptake. The technique is aimed at low concentration hydrogen monitoring where H2 is the result of ageing of polymer materials.

Robert R. J. Maier; J. S. Barton; Julian D. C. Jones; Scott McCulloch; Ben J. S. Jones; Gary Burnell

2005-01-01

209

Palladium-based hydrogen sensing for monitoring of ageing materials  

Microsoft Academic Search

Palladium and its alloys show a high and selective affinity for hydrogen, resulting in a volume expansion. We report on development work using fibre Bragg gratings attached to palladium tubes to monitor strain resulting from hydrogen uptake. The technique is aimed at low concentration hydrogen monitoring where H-2 is the result of ageing of polymer materials.

R. R. J. Maier; J. S. Barton; J. D. C. Jones; S. McCulloch; B. J. S. Jones; G. Burnell

2005-01-01

210

Optical fibre hydrogen sensors based on palladium coatings  

Microsoft Academic Search

Optical fibre sensors for Hydrogen detection at low concentrations has become a growing research area using Palladium as an active medium. Palladium is widely used in hydrogen sensing as it show a high and selective affinity for hydrogen. This metal is capable to absorb hydrogen up to 900 times its own volume which permits that during the expansion mechanical forces

L. Coelho; S. F. O. Silva; Paula A. R. Tafulo; J. L. Santos; O. Frazo; F. X. Malcata

2011-01-01

211

Palladium-based hydrogen sensing for monitoring of ageing materials  

Microsoft Academic Search

Palladium and its alloys show a high and selective affinity for hydrogen, resulting in a volume expansion. Fibre Bragg gratings attached to palladium elements are used to monitor the resultant strain from the hydrogen uptake. The technique is aimed at low concentration hydrogen monitoring to a few hundred ppm, where H2 is the result of ageing of polymer materials. We

R. R. J. Maier; J. S. Barton; J. D. C. Jones; S. McCulloch; B. J. S. Jones; G. Burnell

2006-01-01

212

Palladium-based hydrogen sensing for monitoring of ageing materials  

Microsoft Academic Search

Palladium and its alloys show a high and selective affinity for hydrogen, resulting in a volume expansion. Fibre Bragg gratings attached to palladium elements are used to monitor the resultant strain from the hydrogen uptake. The technique is aimed at low concentration hydrogen monitoring to a few hundred ppm, where H-2 is the result of ageing of polymer materials. We

R. R. J. Maier; J. S. Barton; J. D. C. Jones; S. McCulloch; B. J. S. Jones; G. Burnell

2006-01-01

213

Palladium carbide nanoparticles by gas flow reaction synthesis  

Microsoft Academic Search

Nanoparticles of palladium carbide, a metastable phase with carbon atoms on interstitial sites of metallic lattice, were synthesized by a single process, which allows palladium metallic nanoparticles formed by vapor condensation in flowing argon carrier gas to immediately come in contact with acetone vapor. The average particle size observed by transmission electron microscopy is 5 nm and the geometric standard

Takao Yamamoto; Motoaki Adachi; Keisuke Kawabata; Keisaku Kimura; Horst W. Hahn

1993-01-01

214

Palladium Doped Nano Porous Silicon to Enhance Hydrogen Sensing  

Microsoft Academic Search

A mass manufacturable impedance based, palladium doped porous silicon sensor, was fabricated for hydrogen detection. The sensor was built using electrochemical etching to produce mesoporous silicon. Four nanometers of palladium was defused directly into the porous silicon and another four nanometers of Pd was deposited on the defused surface to enhance sensing. The sensor was tested in a sealed chamber

Kevin Luongo

2006-01-01

215

Faceting of curved tungsten surface induced by palladium  

Microsoft Academic Search

The influence of a palladium adlayer on the surface topography of a needle-shaped tungsten crystal is studied using field ion microscopy. When the curved surface is covered by palladium and annealed at 10001200 K, both macroscopic faceting and steplike microfaceting is observed. The macroscopic {110} and {211} crystal facets increase in size, {211} steplike microfacets are formed around ?111? poles,

A. Szczepkowicz; A Ciszewski

2002-01-01

216

Support and water effects on palladium based methane combustion catalysts  

Microsoft Academic Search

The effect of the support (?-alumina and zirconia) and of the presence of water on the catalytic activity of palladium particles was investigated both on oxidized and reduced states using temperature programmed reaction (TPR). The support was found to influence the onset and the rate of the reoxidation process. The particle size of the palladium phase, however, strongly influenced the

Dragos Ciuparu; Lisa Pfefferle

2001-01-01

217

Support effect on methane combustion over palladium catalysts  

Microsoft Academic Search

The support effect on the low temperature catalytic combustion of methane over palladium catalysts was studied by using a series of metal oxides as the support. The catalytic activity varied with the support, and support oxides with moderate acid strength gave maximum methane conversion. The oxidation state of palladium after the catalytic run, characterized by XRD and XAFS, also varied

Hisao Yoshida; Tomoyuki Nakajima; Yoshiteru Yazawa; Tadashi Hattori

2007-01-01

218

Effect of Palladium Form on Tetraphenylborate Decomposition Rate  

SciTech Connect

Palladium catalyzes the decomposition of tetraphenylborate in alkaline solutions. Researchers postulate several decomposition mechanisms that differ in the form of the palladium catalyst. Potential forms include solid and soluble, different soluble species (such as aqueous or organic soluble), and different oxidation states (i.e., 0, II, and IV). Initial tests measured the reactivity and distribution of four Pd forms in tetraphenylborate slurries.

Walker, D.D. [Westinghouse Savannah River Company, AIKEN, SC (United States)

1998-04-28

219

Method to Test Isotopic Separation Efficiency of Palladium Packed Columns.  

National Technical Information Service (NTIS)

The isotopic effect of palladium has been applied in different ways to separate hydrogen isotopes for many years. At Savannah River Site palladium deposited on kieselguhr (Pd/k) is used in a thermal cycling absorption process (TCAP) to purify tritium for ...

J. C. Staack J. E. Klein L. K. Heung W. D. Jacobs

2007-01-01

220

Hydrogen Sensors and Switches from Electrodeposited Palladium Mesowire Arrays  

Microsoft Academic Search

Hydrogen sensors and hydrogen-activated switches were fabricated from arrays of mesoscopic palladium wires. These palladium ``mesowire'' arrays were prepared by electrodeposition onto graphite surfaces and were transferred onto a cyanoacrylate film. Exposure to hydrogen gas caused a rapid (less than 75 milliseconds) reversible decrease in the resistance of the array that correlated with the hydrogen concentration over a range from

Frdric Favier; Erich C. Walter; Michael P. Zach; Thorsten Benter; Reginald M. Penner

2001-01-01

221

41 CFR 102-118.55 - What administrative procedures must my agency establish for payment of freight, household goods...  

Code of Federal Regulations, 2013 CFR

...payment of freight, household goods, or other transportation services? 102-118.55 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

222

41 CFR 102-118.150 - What are the major mandatory terms and conditions governing the use of passenger transportation...  

Code of Federal Regulations, 2013 CFR

...and conditions governing the use of passenger transportation documents? 102-118.150 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

223

41 CFR 102-118.425 - Is my agency allowed to perform a postpayment audit on our transportation bills?  

Code of Federal Regulations, 2013 CFR

...allowed to perform a postpayment audit on our transportation bills? 102-118.425 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Postpayment...

2013-01-01

224

41 CFR 102-118.160 - Who is liable if my agency makes an overpayment on a transportation bill?  

Code of Federal Regulations, 2013 CFR

...liable if my agency makes an overpayment on a transportation bill? 102-118.160 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

225

41 CFR 102-118.65 - Can my agency receive electronic billing for payment of transportation services?  

Code of Federal Regulations, 2013 CFR

...agency receive electronic billing for payment of transportation services? 102-118.65 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

226

41 CFR 102-118.145 - Where are the mandatory terms and conditions governing the use of passenger transportation...  

Code of Federal Regulations, 2013 CFR

...and conditions governing the use of passenger transportation documents? 102-118.145 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

227

An accurate redetermination of the 118Sn binding energy  

NASA Astrophysics Data System (ADS)

The energy of well-known strong ? line from 198Au, the ``gold standard'', has been modified in the light of new adjustments in the fundamental constants and the value of 411.80176(12)keV was determined, which is 0.29eV lower than the latest 1999 value. An energy calibration procedure for determining the neutron binding energy, Bn, from complicated (n,?) spectra has been developed. A mathematically simple minimization function consisting only of terms having as parameters the coefficients of the energy calibration curve (polynomial) is used. A priori information about the relationships among the energies of different peaks on the spectrum is taken into account by a Monte-Carlo simulation. The procedure was used in obtaining Bn for 118Sn. The ?-ray spectrum from thermal neutron radiative capture by 117Sn has been measured on the IBR-2 pulsed reactor. ?-rays were detected by a 72cm3 HPGe detector. For a better determination of Bn it was important to determine Bn for 64Cu. This value was obtained from two ?-spectra. One spectrum was measured on the IBR-2 by the same detector. The other spectrum was measured with a pair spectrometer at the Brookhaven High Flux Beam Reactor. From these two spectra, Bn for 64Cu was determined to be equal to 7915.52(8)keV. This result essentially differs from the previous value of 7915.96(11)keV. The mean value of the two most precise results of the Bn for 118Sn, was determined to be 9326.35(9)keV. The Bn for 57Fe was determined to be 7646.08(9)keV.

Borzakov, S. B.; Chrien, R. E.; Faikow-Stanczyk, H.; Grigoriev, Yu. V.; Panteleev, Ts. Ts.; Pospisil, S.; Smotritsky, L. M.; Telezhnikov, S. A.

2002-03-01

228

Analysis of deformed palladium cathodes resulting from heavy water electrolysis  

SciTech Connect

Earlier experiments suggested that large differences in heat release between the two sides of a palladium electrode coated with gold on one side and manganese oxide on the other cause observed electrode deformation with high-pressure D{sub 2} gas loading in an electrolysis-like cell. Similar experiments were repeated using heavy water electrolysis. Palladium/titanium coatings on one side and gold coating on the other were made for the preparation of the palladium electrodes. Biaxial bending, partial discoloration, and microcracks of palladium electrodes were observed after 18 days of electrolysis. Analysis of the deformed palladium cathodes was performed. It was discovered that to convert this configuration to a practical energy-producing cell, a coating technique must be found to reduce outward diffusion of deuterium, i.e., to maintain a high D/Pd ratio over longer periods of time. 33 refs., 7 figs., 1 tab.

An, H.K.; Jeong, E.J.; Hong, J.H.; Lee, Y. [Research Inst. of Industrial Science and Technology, Kyoungbuk (Korea, Republic of)

1995-07-01

229

41 CFR 102-118.25 - Does GSA still require my agency to submit its overall transportation policies for approval?  

Code of Federal Regulations, 2013 CFR

...still require my agency to submit its overall transportation policies for approval? 102-118.25...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT General...

2013-01-01

230

41 CFR 102-118.290 - Must every electronic and paper transportation bill undergo a prepayment audit?  

Code of Federal Regulations, 2013 CFR

... false Must every electronic and paper transportation bill undergo a prepayment audit? 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Prepayment Audits of...

2013-01-01

231

Palladium Tetraazaanulenes: The Synthesis and Structure of Palladium 5,7,12,14 - Tetramethyl-Dibenzo(b,i)(1,4,8,11)Tetraaza(14)Annulene.  

National Technical Information Service (NTIS)

The first palladium dibenzotetraaza (14) annulenes have been prepared from the reaction of the free base ligand with bis(benzonitrile)paddadous chloride. Analytical data are consistent with the proposed structures. Palladium 5.7.12.14-tetramethyl-dibenzo(...

M. Tsutsui R. L. Bobsein G. Cash R. Pettersen

1978-01-01

232

AM1 parameters for palladium and silver.  

PubMed

We report the parameterization of AM1 for the elements palladium and silver. The basis sets for both metals contain one set each of s-, p- and d-orbitals. AM1 parameters are now available for H, C, N, O and F (which use the original AM1 parameters), Al, Si, P, S, Cl, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Br, Zr, Mo, Pd, Ag, I and Au. The performance and typical errors of AM1 are discussed for Pd and Ag and compared with the PM6 Hamiltonian. PMID:21229370

Kayi, Hakan; Clark, Timothy

2011-01-13

233

Substructure and properties of thick palladium films  

NASA Astrophysics Data System (ADS)

Thick (up to 9 ?m) condensates are deposited by electron-beam evaporation (EBE) and magnetron sputtering of palladium. The surface substructure and morphology of these condensates are studied by electron microscopy. The strength and hydrogen permeability of these vacuum condensates are measured. It is found that condensation-stimulated processes give rise to a gradient substructure across the film thickness and that the gradient films are substantially stronger than epitaxial films. The epitaxial films grown by EBE proved to be most permeable to hydrogen.

Ievlev, V. M.; Belonogov, E. K.; Maksimenko, A. A.; Burkhanov, G. S.; Roshan, N. R.

2008-02-01

234

Neutron holographic study of palladium hydride  

NASA Astrophysics Data System (ADS)

A holographic image of the atomic arrangement in a PdH0.78 single crystal was recorded using spherical neutron waves generated by incoherent neutron-proton scattering (``internal source concept''). The resolution is sufficient to show the positions of single atomic nuclei on their respective lattice sites despite the delocalization of protons due to the weak bonding of hydrogen dissolved in palladium metal. Ways to overcome problems in the reconstruction of atomic positions related to the highly unfavorable sample shape are discussed. The technique offers possibilities for the investigation of various materials containing substantial amounts of hydrogen.

Cser, Lszl; Trk, Gyula; Krexner, Gerhard; Prem, Manfred; Sharkov, Ivan

2004-08-01

235

Scalable synthesis of nanoporous palladium powders.  

SciTech Connect

Nanoporous palladium powders are synthesized on milligram to gram scales by chemical reduction of tetrachloro complexes by ascorbate in a concentrated aqueous surfactant at temperatures between -20 and 30 C. Particle diameters are approximately 50 nm, and each particle is perforated by 3 nm pores, as determined by electron tomography. These materials are of potential value for storage of hydrogen isotopes and electrical charge; producing them at large scales in a safe and efficient manner will help realize this. A slightly modified procedure also results in nanoporous platinum.

Robinson, David B.; Tran, Kim L.; Clift, W. Miles; Arslan Ilke; Langham, Mary Elizabeth; Ong, Markus D.; Fares, Stephen James

2009-03-01

236

Californium--palladium metal neutron source material  

DOEpatents

Californium, as metal or oxide, is uniformly dispersed throughout a noble metal matrix, provided in compact, rod or wire form. A solution of californium values is added to palladium metal powder, dried, blended and pressed into a compact having a uni-form distribution of californium. The californium values are decomposed to californium oxide or metal by heating in an inert or reducing atmosphere. Sintering the compact to a high density closes the matrix around the dispersed californium. The sintered compact is then mechanically shaped into an elongated rod or wire form. (4 claims, no drawings) (Official Gazette)

Dahlen, B.L.; Mosly, W.C. Jr.; Smith, P.K.; Albenesius, E.L.

1974-01-22

237

Direct Observation of Paramagnons in Palladium  

SciTech Connect

We report an inelastic neutron scattering study of the spin fluctuations in the nearly ferromagnetic element palladium. Dispersive over-damped collective magnetic excitations or 'paramagnons' are observed up to 128 meV. We analyze our results in terms of a Moriya-Lonzarich-type spin-fluctuation model and estimate the contribution of the spin fluctuations to the low-temperature heat capacity. In spite of the paramagnon excitations being relatively strong, their relaxation rates are large. This leads to a small contribution to the low-temperature electronic specific heat.

Doubble, R. [University of Bristol, UK; Hayden, S M. [University of Bristol, UK; Dai, Pengcheng [University of Tennessee, Knoxville (UTK); Mook Jr, Herbert A [ORNL; Thompson, James R [ORNL; Frost, C. [ISIS Facility, Rutherford Appleton Laboratory

2010-01-01

238

Recoil studies in the reaction of {sup 12}C ions with the enriched isotope {sup 118}Sn  

SciTech Connect

The recoil properties of the product nuclei from the interaction of 2.2 GeV/nucleon {sup 12}C ions from Nuclotron of the Laboratory of High Energies, Joint Institute for Nuclear Research at Dubna with a {sup 118}Sn target have been studied via catcher foils method. The experimental data were analyzed using the mathematical formalism of the standard two-step vector model. The results for {sup 12}C ions are compared with those for deuterons and protons. Three different Los Alamos versions of the Quark-Gluon String Model were used for comparison with our experimental data.

Balabekyan, A. R., E-mail: balabekyan@ysu.am; Danagulyan, A. S.; Drnoyan, J. R. [Yerevan State University (Armenia); Demekhina, N. A. [JINR (Russian Federation); Hovhannisyan, G. H. [Yerevan State University (Armenia); Adam, J.; Kalinnikov, V. G.; Krivopustov, M. I.; Pronskikh, V. S.; Stegailov, V. I.; Solnyshkin, A. A.; Tsoupko-Sitnikov, V. M. [JINR (Russian Federation); Mashnik, S. G. [Los Alamos National Laboratory (United States); Gudima, K. K. [Academy of Sciences of Moldova, Institute of Applied Physics (Moldova, Republic of)

2010-07-15

239

Hydrogen Sensors and Switches from Electrodeposited Palladium Mesowire Arrays  

NASA Astrophysics Data System (ADS)

Hydrogen sensors and hydrogen-activated switches were fabricated from arrays of mesoscopic palladium wires. These palladium ``mesowire'' arrays were prepared by electrodeposition onto graphite surfaces and were transferred onto a cyanoacrylate film. Exposure to hydrogen gas caused a rapid (less than 75 milliseconds) reversible decrease in the resistance of the array that correlated with the hydrogen concentration over a range from 2 to 10%. The sensor response appears to involve the closing of nanoscopic gaps or ``break junctions'' in wires caused by the dilation of palladium grains undergoing hydrogen absorption. Wire arrays in which all wires possessed nanoscopic gaps reverted to open circuits in the absence of hydrogen gas.

Favier, Frdric; Walter, Erich C.; Zach, Michael P.; Benter, Thorsten; Penner, Reginald M.

2001-09-01

240

Hydrogen Adsorption onto Magnesium Palladium and Magnesium Palladium Niobium Multilayer Thin Films  

NASA Astrophysics Data System (ADS)

We report on the synthesis and characterization of magnesium palladium and magnesium niobium multilayer thin films as a possible reversible hydrogen storage material. The multilayer thin films are characterized by x-ray diffraction (XRD) and x-ray reflectivity (XRR) before and after hydrogen uptake. This study examines the optimal thickness of the magnesium film which would allow the diffusion of hydrogen to form magnesium hydride (MgH2). Thin barriers of palladium and niobium permit hydrogen to permeate while acting as a diffusion barrier to oxygen. Multilayer thin films are grown with various magnesium thicknesses via magnetron sputtering on a sapphire substrate. Thicknesses of Mg, MgH2, Pd, and Nb are reported. Likewise, interfacial roughness attributable to hydrogenation and dehydrogenation cycling measured using XRR are reported.

Steinmetz, Christian; Hettinger, Jeffrey; Dobbins, Tabbetha

2013-03-01

241

Influence of a surfactant and reducing agent on preparation of palladium.  

PubMed

We investigated the influence of a surfactant and reducing agent on the preparation of palladium nanoparticles, characterizing the prepared palladium nanoparticles by Transmission Electron Microscopy (TEM), and X-ray diffractometer (XRD). Colloidal palladium nanoparticles are prepared using PdCl2 as a precursor and polyvinylpyrrolidone (PVP) as a surfactant. In addition, hydrogen and sodium borohydride are used as reducing agents are used to characterize the prepared palladium nanoparticles. The concentrations of a precursor, a surfactant and its molecular weight affect the size of palladium nanoparticles, while the reducing agents influence the morphologies and structures of palladium nanoparticles. PMID:23755629

Kim, Sang Chai; Jung, Sang Chul; Park, Young-Kwon; Ahn, Ho Geun; Seo, Seong Gyu

2013-03-01

242

Effect of Lactobacillus salivarius Bacteriocin Abp118 on the Mouse and Pig Intestinal Microbiota  

PubMed Central

Lactobacilli are Gram-positive bacteria that are a subdominant element in the human gastrointestinal microbiota, and which are commonly used in the food industry. Some lactobacilli are considered probiotic, and have been associated with health benefits. However, there is very little culture-independent information on how consumed probiotic microorganisms might affect the entire intestinal microbiota. We therefore studied the impact of the administration of Lactobacillus salivarius UCC118, a microorganism well characterized for its probiotic properties, on the composition of the intestinal microbiota in two model animals. UCC118 has anti-infective activity due to production of the bacteriocin Abp118, a broad-spectrum class IIb bacteriocin, which we hypothesized could impact the microbiota. Mice and pigs were administered wild-type (WT) L. salivarius UCC118 cells, or a mutant lacking bacteriocin production. The microbiota composition was determined by pyrosequencing of 16S rRNA gene amplicons from faeces. The data show that L. salivarius UCC118 administration had no significant effect on proportions of major phyla comprising the mouse microbiota, whether the strain was producing bacteriocin or not. However, L. salivarius UCC118 WT administration led to a significant decrease in Spirochaetes levels, the third major phylum in the untreated pig microbiota. In both pigs and mice, L. salivarius UCC118 administration had an effect on Firmicutes genus members. This effect was not observed when the mutant strain was administered, and was thus associated with bacteriocin production. Surprisingly, in both models, L. salivarius UCC118 administration and production of Abp118 had an effect on Gram-negative microorganisms, even though Abp118 is normally not active in vitro against this group of microorganisms. Thus L. salivarius UCC118 administration has a significant but subtle impact on mouse and pig microbiota, by a mechanism that seems at least partially bacteriocin-dependent.

Riboulet-Bisson, Eliette; Sturme, Mark H. J.; Jeffery, Ian B.; O'Donnell, Michelle M.; Neville, B. Anne; Forde, Brian M.; Claesson, Marcus J.; Harris, Hugh; Gardiner, Gillian E.; Casey, Patrick G.; Lawlor, Peadar G.; O'Toole, Paul W.; Ross, R. Paul

2012-01-01

243

Formation of palladium fullerides and their thermal decomposition into palladium nanoparticles  

Microsoft Academic Search

Formation of palladium fullerides from various Pd:C60 compositions was studied by XRD, Raman spectroscopy and TEM. Raman spectra of PdxC60 samples show close similarity to spectra of C60 polymers obtained under high pressure\\/high temperature conditions and suggest the formation of chain-like and two-dimensional polymeric structures in PdxC60 of various compositions. Thermal decomposition of PdxC60 results in the formation of fine

A. V. Talyzin; A. Dzwilewski; M. Pudelko

2007-01-01

244

Palladium catalysis in the synthesis of medicinal agents.  

PubMed

Palladium-catalyzed reactions are having a great impact on the synthesis of medicinal agents due to their ability to form carbon-carbon and carbon-heteroatom bonds effectively. Quite often the palladium-catalyzed step(s) in a synthesis is key to the overall strategy for preparing a drug candidate. The diversity of the coupling processes is being broadened by the availability of new functionalities for the oxidative addition and transmetalation steps. In addition, the development of new ligands, or the application of existing ligands, is playing a large role in expanding the choices of coupling partners. Traditionally, palladium reactions have constructed achiral systems, however, the number of successful asymmetric syntheses with palladium chemistry is growing. This review will cover the variety of coupling reactions that have been applied to drug synthesis, with representative examples highlighted from the recent literature. PMID:19649833

Larsen, R D

1999-11-01

245

Palladium-Based Electrocatalysts and Fuel cells employing such Electrocatalysts.  

National Technical Information Service (NTIS)

A direct organic fuel cell includes a fluid fuel comprising formic acid, an anode having an electrocatalyst comprising palladium nanoparticles, a fluid oxidant, a cathode electrically connected to the anode, and an electrolyte interposed between the anode...

R. I. Masel R. T. Larsen Y. Zhu

2004-01-01

246

Design and synthesis of thin palladium membranes for hydrogen separation  

SciTech Connect

The progress of electroless deposition of palladium around the pore area at surface of porous stainless steel was recorded in order to understand membrane formation and to control the membrane quality. A bridge structure is formed during the membrane formation around the pore area of the substrate. The porous substrate was modified to be smooth using micro-or nano-size metal or metal oxide particles in order to make sure that palladium membrane is strongly supported by the substrate and as the result the membrane thickness can be further reduced. The experimental results obtained from hydrogen permeation through the palladium membranes having the thickness from 400 nm to 18 {mu}m demonstrate that these thin membranes are solid and they can be used at the temperature of 550 deg.C and hydrogen pressure difference of 350 kPa. The proposed processing will allow optimizing the design and fabrication of thin palladium membranes for hydrogen separation. (authors)

Shi, Z.; Szpunar, J. A. [Dept. of Materials Engineering, McGill Univ., 3610 Univ., Montreal, QC H3A 2B2 (Canada); Wu, S. [AH2T Inc., 225 President Kennedy Avenue, PK6230, Montreal, QC H2X 3Y8 (Canada)

2008-07-15

247

Comparative Methylation Chemistry of Platinum, Palladium, Lead, and Manganese.  

National Technical Information Service (NTIS)

A study was carried out to evaluate the potential for platinum, palladium, lead, and manganese salts and oxides to be biochemically methylated. Methylation is an important, well recognized, determinant of metal toxicity; the striking example being the ext...

R. T. Taylor

1976-01-01

248

Highly efficient palladium-catalyzed hydrostannation of ethyl ethynyl ether  

PubMed Central

The palladium-catalyzed hydrostannation of acetylenes is widely exploited in organic synthesis as a means of forming vinyl stannanes for use in palladium-catalyzed cross-coupling reactions. Application of this methodology to ethyl ethynyl ether results in an enol ether that is challenging to isolate from the crude reaction mixture because of incompatibility with typical silica gel chromatography. Reported here is a highly efficient procedure for the palladium-catalyzed hydrostannation of ethyl ethynyl ether using 0.1% palladium(0) catalyst and 1.0 equiv of tributyltin hydride. The product obtained is a mixture of regioisomers that can be carried forward with exclusive reaction of the ?-isomer. This method is highly reproducible; relative to previously reported procedures, it is more economical and involves a more facile purification procedure.

Andrews, Ian P.; Kwon, Ohyun

2008-01-01

249

Solubility of hydrogen in single-sized palladium clusters  

SciTech Connect

Hydrogen concentration-pressure isotherms of surfactant-stabilized palladium clusters and polymer-embedded palladium clusters with diameters of 2, 3, and 5 nm are measured with the gas sorption method at room temperature. The results show that, compared to bulk palladium, the hydrogen solubility in the {alpha} phase of the clusters is enhanced fivefold to tenfold, and the miscibility gap is narrowed. Both results can be explained by assuming that hydrogen occupies the subsurface sites of the palladium clusters. The Pd-H isotherms of all clusters show the existence of hysteresis, even though the formation of misfit dislocations is unfavorable in small clusters. Compared to surfactant-stabilized clusters, the polymer-embedded clusters show slow absorption and desorption kinetics. The absorption kinetics can be described by a diffusion model for the composite polymer-cluster system.

Sachs, C.; Pundt, A.; Kirchheim, R.; Winter, M.; Reetz, M. T.; Fritsch, D.

2001-08-15

250

Crossover behavior in hydrogen sensing mechanism for palladium ultrathin films.  

SciTech Connect

Palladium has been extensively studied as a material for hydrogen sensors because of the simplicity of its reversible resistance change when exposed to hydrogen gas. Various palladium films and nanostructures have been used, and different responses have been observed with these diverse morphologies. In some cases, such as with nanowires, the resistance will decrease, whereas in others, such as with thick films, the resistance will increase. Each of these mechanisms has been explored for several palladium structures, but the crossover between them has not been systematically investigated. Here we report on a study aimed at deciphering the nanostructure-property relationships of ultrathin palladium films used as hydrogen gas sensors. The crossover in these films is observed at a thickness of {approx} 5 nm. Ramifications for future sensor developments are discussed.

Darling, S. B.; Ramanathan, M.; Skudlarek, G.; Wang, H. H.; Illinois Math and Science Academy

2010-01-01

251

Palladium-based electrocatalysts and fuel cells employing such electrocatalysts  

SciTech Connect

A direct organic fuel cell includes a fluid fuel comprising formic acid, an anode having an electrocatalyst comprising palladium nanoparticles, a fluid oxidant, a cathode electrically connected to the anode, and an electrolyte interposed between the anode and the cathode.

Masel; Richard I. (Champaign, IL), Zhu; Yimin (Urbana, IL), Larsen; Robert T. (Champaign, IL)

2010-08-31

252

Nanocontact-induced catalytic activation in palladium nanoparticles  

Microsoft Academic Search

We report the synthesis and catalytic studies of novel palladium nanostructures assembled from small nanoparticles by a surfactant-templated method. These one-dimensional nanomaterials comprise high-density nanocontacts of ~1 nm in contact length at the particle-particle interface. In contrast to dispersed Pd nanoparticles (~5 nm), the polycrystalline palladium nanowires exhibit enhanced (~200 times) catalytic reactivity towards carbon-carbon cross-couplings under mild conditions. Theoretical

Changlong Jiang; Sadananda Ranjit; Zhongyu Duan; Yu Lin Zhong; Kian Ping Loh; Chun Zhang; Xiaogang Liu

2009-01-01

253

Palladium nanoparticles and nanowires deposited electrochemically: AFM and electrochemical characterization  

Microsoft Academic Search

Palladium nanoparticles and nanowires electrochemically deposited onto a carbon surface were studied using cyclic voltammetry,\\u000a impedance spectroscopy and atomic force microscopy. The ex situ and in situ atomic force microscopy (AFM) topographic images\\u000a showed that nanoparticles and nanowires of palladium were preferentially electrodeposited to surface defects on the highly\\u000a oriented pyrolytic graphite surface and enabled the determination of the Pd

Victor C. Diculescu; Ana-Maria Chiorcea-Paquim; Oana Corduneanu; Ana Maria Oliveira-Brett

2007-01-01

254

Preparation of palladium composite membranes by modified electroless plating procedure  

Microsoft Academic Search

A thin palladium composite membrane was produced by modified electroless plating procedure. Compared with the conventional electroless plating procedure, the modified electroless plating procedure consists of the activation of a ceramic substrate by the solgel process of a Pd(II)-modified boehmite sol. Additionally, the infiltration of an electroless plating solution to a porous substrate during the deposition of palladium was employed

H.-B Zhao; K Pflanz; J.-H Gu; A.-W Li; N Stroh; H Brunner; G.-X Xiong

1998-01-01

255

Analysis of deformed palladium cathodes resulting from heavy water electrolysis  

Microsoft Academic Search

Earlier experiments suggested that large differences in heat release between the two sides of a palladium electrode coated with gold on one side and manganese oxide on the other cause observed electrode deformation with high-pressure D gas loading in an electrolysis-like cell. Similar experiments were repeated using heavy water electrolysis. Palladium\\/titanium coatings on one side and gold coating on the

H. K. An; E. J. Jeong; J. H. Hong; Y. Lee

1995-01-01

256

Synthesis and characterization of nitrides of iridium and palladiums  

SciTech Connect

We describe the synthesis of nitrides of iridium and palladium using the laser-heated diamond anvil cell. We have used the in situ techniques of x-ray powder diffraction and Raman scattering to characterize these compounds and have compared our experimental findings where possible to the results of first-principles theoretical calculations. We suggest that palladium nitride is isostructural with pyrite, while iridium nitride has a monoclinic symmetry and is isostructural with baddeleyite.

Crowhurst, Jonathan C.; Goncharov, Alexander F.; Sadigh, B.; Zaug, J.M.; Aberg, D.; Meng, Yue; Prakapenka, Vitali B. (LLNL); (CIW); (UC)

2008-08-14

257

Catalytic dechlorination of chlorophenols in water by palladium\\/iron  

Microsoft Academic Search

Three isomer chlorophenols, o-, m-, p-chlorophenol, were dechlorinated by palladium\\/iron powder in water through catalytic reduction. The dechlorinated reaction is believed to take place on the surface site of the catalyst in a pseudo-first-order reaction. The reduction product for all the three isomers is phenol. The dechlorination rate increases with increase of bulk loading of palladium due to the increase

Yihui Liu; Fenglin Yang; Po Lock Yue; Guohua Chen

2001-01-01

258

41 CFR 102-118.240 - How does my agency get GBL and GTR forms?  

Code of Federal Regulations, 2010 CFR

41 Public Contracts and Property Management 3 2012-01-01 2012-01-01 false How does my agency get GBL and GTR forms? 102-118.240 Section 102-118.240 Public Contracts and Property Management Federal Property Management Regulations System (Continued) FEDERAL MANAGEMENT...

2012-01-01

259

Cleanup Verification Package for the 118-B-6, 108-B Solid Waste Burial Ground  

SciTech Connect

This cleanup verification package documents completion of remedial action for the 118-B-6, 108-B Solid Waste Burial Ground. The 118-B-6 site consisted of 2 concrete pipes buried vertically in the ground and capped by a concrete pad with steel lids. The site was used for the disposal of wastes from the "metal line" of the P-10 Tritium Separation Project.

M. L. Proctor

2006-06-13

260

Polychlorinated biphenyl (118) activates osteoclasts and induces bone resorption in goldfish.  

PubMed

To analyze the effect of polychlorinated biphenyl (PCB) 118 on fish bone metabolism, we examined osteoclastic and osteoblastic activities, as well as plasma calcium levels, in the scales of PCB (118)-injected goldfish. In addition, effect of PCB (118) on osteoclasts and osteoblasts was investigated in vitro. Immature goldfish, in which the endogenous effects of sex steroids are negligible, were used. PCB (118) was solubilized in dimethyl sulfoxide at a concentration of 10ppm. At 1 and 2days after PCB (118) injection (100ng/g body weight), both osteoclastic and osteoblastic activities, and plasma calcium levels were measured. In an in vitro study, then, both osteoclastic and osteoblastic activities as well as each marker mRNA expression were examined. At 2days, scale osteoclastic activity in PCB (118)-injected goldfish increased significantly, while osteoblastic activity did not change significantly. Corresponding to osteoclastic activity, plasma calcium levels increased significantly at 2days after PCB (118) administration. Osteoclastic activation also occurred in the marker enzyme activities and mRNA expressions in vitro. Thus, we conclude that PCB (118) disrupts bone metabolism in goldfish both in vivo and in vitro experiments. PMID:23247518

Yachiguchi, Koji; Matsumoto, Noriko; Haga, Yuki; Suzuki, Motoharu; Matsumura, Chisato; Tsurukawa, Masahiro; Okuno, Toshihiro; Nakano, Takeshi; Kawabe, Kimi; Kitamura, Kei-Ichiro; Toriba, Akira; Hayakawa, Kazuichi; Chowdhury, Vishwajit S; Endo, Masato; Chiba, Atsuhiko; Sekiguchi, Toshio; Nakano, Masaki; Tabuchi, Yoshiaki; Kondo, Takashi; Wada, Shigehito; Mishima, Hiroyuki; Hattori, Atsuhiko; Suzuki, Nobuo

2012-12-18

261

Die magnetischen Momente der 5 ? -Niveaus von Sn 118 und Sn 120  

Microsoft Academic Search

The rotations of??-angular correlations in strong external magnetic fields were observed in the decay of 5.1h Sb118 and 5.8d Sb120. Values of the gyromagnetic ratios of the 5- two particle states of Sn118 and Sn120 were derived.

E. Bodenstedt; H. J. Krner; E. Gerdau; J. Radeloff; K. Auerbach; L. Mayer; A. Roggenbuck

1962-01-01

262

41 CFR 102-118.330 - What are the elements of an acceptable prepayment audit program?  

Code of Federal Regulations, 2013 CFR

... 3 2013-01-01 2013-01-01 false What are the elements of an acceptable prepayment audit program? 102-118.330...Maintaining An Approved Program § 102-118.330 What are the elements of an acceptable prepayment audit program? An...

2013-01-01

263

The ternary system cerium-palladium-silicon  

NASA Astrophysics Data System (ADS)

Phase relations in the ternary system Ce-Pd-Si have been established for the isothermal section at 800 C based on X-ray powder diffraction and EMPA techniques on about 130 alloys, which were prepared by arc-melting under argon or powder reaction sintering. Eighteen ternary compounds have been observed to participate in the phase equilibria at 800 C. Atom order was determined by direct methods from X-ray single-crystal counter data for the crystal structures of ?8Ce3Pd4Si4 (U3Ni4Si4-type, Immm; a=0.41618(1), b=0.42640(1), c=2.45744(7) nm), ?16Ce2Pd14Si (own structure type, P4/nmm; a=0.88832(2), c=0.69600(2) nm) and also for ?18CePd1-xSix (x=0.07; FeB-type, Pnma; a=0.74422(5), b=0.45548(3), c=0.58569(4) nm). Rietveld refinements established the atom arrangement in the structures of ?5Ce3PdSi3 (Ba3Al2Ge2-type, Immm; a=0.41207(1), b=0.43026(1), c=1.84069(4) nm) and ?13Ce3-xPd20+xSi6 (0?x?1, Co20Al3B6-type, Fm3m; a=1.21527(2) nm). The ternary compound Ce2Pd3Si3 (structure-type Ce2Rh1.35Ge4.65, Pmmn; a=0.42040(1), b=0.42247(1), c=1.72444(3) nm) was detected as a high-temperature compound, however, does not participate in the equilibria at 800 C. Phase equilibria in Ce-Pd-Si are characterized by the absence of cerium solubility in palladium silicides. Mutual solubility among cerium silicides and cerium-palladium compounds are significant whereby random substitution of the almost equally sized atom species palladium and silicon is reflected in extended homogeneous regions at constant Ce-content such as for ?2Ce(PdxSi1-x)2 (AlB2-derivative type), ?6Ce(PdxSi1-x)2 (ThSi2-type) and ?7CePd2-xSi2+x. The crystal structures of compounds ?4Ce~8Pd~46Si~46, ?12Ce~29Pd~49Si~22, ?15Ce~22Pd~67Si~11, ?17Ce~5Pd~77Si~18 and ?18CePd1-xSix (x~0.1) are still unknown.

Lipatov, Alexey; Gribanov, Alexander; Grytsiv, Andriy; Rogl, Peter; Murashova, Elena; Seropegin, Yurii; Giester, Gerald; Kalmykov, Konstantin

2009-09-01

264

Catalytic activity of palladium supported on single wall carbon nanotubes compared to palladium supported on activated carbon  

Microsoft Academic Search

Nanoparticles (210nm) of palladium have been deposited on single wall carbon nanotubes (SWNT) by spontaneous reduction from Pd(OAc)2 or from oxime carbapalladacycle. These catalysts exhibit higher catalytic activity than palladium over activated carbon (Pd\\/C) for the Heck reaction of styrene and iodobenzene and for the Suzuki coupling of phenylboronic and iodobenzene. This fact has been attributed as reflecting the dramatic

Avelino Corma; Hermenegildo Garcia; Antonio Leyva

2005-01-01

265

Electrocatalysts having platium monolayers on palladium, palladium alloy, and gold alloy core-shell nanoparticles, and uses thereof  

SciTech Connect

The invention relates to platinum-coated particles useful as fuel cell electrocatalysts. The particles are composed of a noble metal or metal alloy core at least partially encapsulated by an atomically thin surface layer of platinum atoms. The invention particularly relates to such particles having a palladium, palladium alloy, gold alloy, or rhenium alloy core encapsulated by an atomic monolayer of platinum. In other embodiments, the invention relates to fuel cells containing these electrocatalysts and methods for generating electrical energy therefrom.

Adzic, Radoslav (Setauket, NY); Mo, Yibo (Naperville, IL); Vukmirovic, Miomir (Port Jefferson Station, NY); Zhang, Junliang (Rochester, NY)

2010-12-21

266

Electronic Transitions of Palladium and Vanadium Dimer  

NASA Astrophysics Data System (ADS)

The laser induced fluorescence (LIF) spectrum of palladium dimer (Pd_{2}) in the visible region between 480 and 700 nm has been studied. Five vibrational bands were recorded and analyzed; they are assigned to a ^{3} ? _{g} - X^{3} ? _{u} ^{+} system. The vibrational frequency of the ground X^{3} ? _{u} ^{+} state has been determined to be 211.4 cm^{-1}. This is the first experimental observation of the LIF spectrum of Pd_{2}. In addition, the LIF spectrum of vanadium dimer (V_{2}) has also been studied; several new transition band systems were observed in the wavelength between 480 and 530 nm. The analysis of the spectra recorded for these two molecules will be presented.

Qian, Yue; Ng, Y. W.; Cheung, A. S.-C.

2013-06-01

267

Electrochemical Synthesis and Characterization of Palladium Nanostructures  

NASA Astrophysics Data System (ADS)

Palladium (Pd) is a good candidate material for hydrogen gas sensing at room temperature due to its high affinity to hydrogen. Pd in the form of nanostructures has demonstrated better performance in its gas sensing property as compared to that in the form of bulk metal because of its large surface area to volume ratio. In this work, various Pd nanostructures were synthesized via electrochemical route. Pd in the form of nanowires can be produced directly via template-assisted electrodeposition while Pd nanotubes were synthesized by galvanic displacement with morphology and composition governed by electrolyte temperature and reaction time. Using similar electrodeposition conditions, Pd in the form of nanoparticles were electrochemically decorated on the surfaces of ZnO rods and Si nanowires arrays. Growth study on various Pd nanostructures produced is presented here, using microscopy, diffraction and probe-based techniques for microstructural, morphological and chemical characterizations.

Ilias, S. H.; Kok, K. Y.; Ng, I. K.; Saidin, N. U.

2013-04-01

268

Palladium-catalyzed asymmetric benzylation of azlactones.  

PubMed

Asymmetric benzylation of prochiral azlactone nucleophiles enables the catalytic introduction of a benzyl group towards the synthesis of ?,?-disubstituted amino acids. Herein, we report an enantioselective palladium-catalyzed process using chiral bis(diphenylphosphinobenzoyl)diamine (dppba) ligands. Naphthalene- and heterocycle-based methyl carbonates react with a number of azlactones derived from both natural and unnatural amino acids. Monocyclic benzylic electrophiles, for which the barrier to ionization is higher, must employ a phosphate leaving group in order to react. Reaction conditions for electron-rich and -neutral benzylic electrophiles have been developed, and the scope of the reaction has been explored with respect to both reaction partners. The high levels of asymmetric induction, as well as the reactivity pattern of the electrophiles, suggest an ?(3) -benzyl intermediate that arises through two distinct pathways. PMID:24115047

Trost, Barry M; Czabaniuk, Lara C

2013-09-25

269

Synthesis and characterization of n-octadecayl mercaptan-protected palladium nanoparticles  

Microsoft Academic Search

Long-chain n-octadecayl mercaptan (C18H37SH)-passivated palladium nanoparticles are synthesized and characterized. The palladium nanoparticles are successfully capped by n-octadecayl mercaptan. These palladium nanoparticles have the same face-centered cubic crystalline structure as Pd in the bulk phase. The size of the capped palladium nanoparticles varies in the range of 1.35.5 nm for various reaction conditions. These results show that the long-chain n-octadecayl

C. M. Shen; Y. K. Su; H. T. Yang; T. Z. Yang; H. J. Gao

2003-01-01

270

Recovery of cesium and palladium from nuclear reactor fuel processing waste  

DOEpatents

A method of recovering cesium and palladium values from nuclear reactor fission product waste solution involves contacting the solution with a source of chloride ions and oxidizing palladium ions present in the solution to precipitate cesium and palladium as Cs.sub.2 PdCl.sub.6.

Campbell, David O. (Oak Ridge, TN)

1976-01-01

271

Photochemical formation of palladium patterns on surface-modified polyimide resin  

Microsoft Academic Search

A simplified method for forming a palladium circuit pattern on polyimide resin substrate was proposed. The carboxyl group, as a cation exchange group, was formed on the polyimide resin surface by a potassium hydroxide treatment. Palladium(II) ion was then adsorbed onto the surface modified polyimide resin by ion exchange. Ultraviolet irradiation of this palladium(II) ion absorbed resin with sodium formate

M. Seita; H. Nawafune; T. Nishioka; S. Mizumoto; T. Kanai

2002-01-01

272

Palladiumpolyelectrolyte hybrid nanoparticles for hydrogen sensor in fuel cells  

Microsoft Academic Search

We prepared palladiumpolyelectrolyte hybrid nanoparticles by using a metallization of polyelectrolyte. In this study, we selected polyacrylic acid (PAA) as a polyelectrolyte and reduced the palladium ions on the PAA by using ascorbic acids in order to form a unique spherically shaped mosslike hybrid nanoparticle. Palladium (Pd) can absorb hydrogen to become PdHx, and the storage of hydrogen increases the

Satoshi Ohara; Yoshiharu Hatakeyama; Mitsuo Umetsu; Kazuyoshi Sato; Takashi Naka; Tadafumi Adschiri

2009-01-01

273

Shape-controlled palladium nanowires and nanoparticles electrodeposited on carbon electrodes  

Microsoft Academic Search

Palladium nanoparticles and nanowires were electrodeposited on two carbon electrode surfaces, highly oriented pyrolytic graphite and glassy carbon, and extensively characterised by voltammetry and atomic force microscopy (AFM). The electrochemical behaviour in buffer solution of the palladium nanostructures, electrodeposited at different potentials from two concentrations of palladium (II) sulphate, was investigated. The electrodeposition parameters, the concentration of the precursor solution

Oana Corduneanu; Victor C. Diculescu; Ana-Maria Chiorcea-Paquim; Ana-Maria Oliveira-Brett

2008-01-01

274

The effect of direction of hydrogen permeation on the rate through a composite palladium membrane  

Microsoft Academic Search

This paper reports the effect of direction of hydrogen permeation on the rate through a composite palladium membrane. Palladium film is coated on the outer surface of a tubular ceramic support. Permeation rates of hydrogen through the palladium membrane were measured at 573, 673 and 773K under two modes. The first one is called CP mode in which hydrogen permeates

Shigeo Goto; Suttichai Assabumrungrat; Tomohiko Tagawa; Piyasan Praserthdam

2000-01-01

275

Atmospheric pressure aminocarbonylation of aryl iodides using palladium nanoparticles supported on MOF-5.  

PubMed

An efficient amide synthesis by atmospheric pressure aminocarbonylation using palladium nanoparticles supported on MOF-5 is reported. Interestingly, only 0.5 wt% palladium loading was required to achieve high yields. The catalyst is recyclable and offers negligible palladium leaching. PMID:22338700

Dang, Tuan T; Zhu, Yinghuai; Ghosh, Subhash C; Chen, Anqi; Chai, Christina L L; Seayad, Abdul M

2012-02-01

276

The Roles of Subsurface Carbon and Hydrogen in Palladium-Catalyzed Alkyne Hydrogenation  

Microsoft Academic Search

Alkynes can be selectively hydrogenated into alkenes on solid palladium catalysts. This process requires a strong modification of the near-surface region of palladium, in which carbon (from fragmented feed molecules) occupies interstitial lattice sites. In situ x-ray photoelectron spectroscopic measurements under reaction conditions indicated that much less carbon was dissolved in palladium during unselective, total hydrogenation. Additional studies of hydrogen

Detre Teschner; Jnos Borsodi; Attila Wootsch; Zsolt Rvay; Michael Hvecker; Axel Knop-Gericke; S. David Jackson; Robert Schlgl

2008-01-01

277

Investigations of photo-induced decomposition of palladium acetate for electroless copper plating  

Microsoft Academic Search

Photo-induced decomposition of palladium acetate films has been performed by using argon and xenon excimer vacuum ultraviolet (VUV) sources that emit radiation peaking at wavelengths of 126 and 172 nm, respectively. VUV irradiation of a substrate treated with palladium acetate results in the formation of palladium, which acts as a catalyst for subsequent copper plating by means of an electroless

Jun-Ying Zhang; Ian W. Boyd

1998-01-01

278

Highly sensitive hydrogen sensors using palladium coated fiber optics with exposed cores and evanescent field interactions  

Microsoft Academic Search

A novel fiber optic hydrogen sensor which is constructed by depositing palladium over an exposed core region of a multimode fiber is reported. The sensing mechanism is based on evanescent field interaction with the palladium coating. Since the length, thickness, and composition of the palladium patch can be controlled independently of each other, it is possible to increase the speed

Massood Tabib-Azar; Boonsong Sutapun; Rose Petrick; Alex Kazemi

1999-01-01

279

Modulation of CdSe fluorescence using palladium nanoparticles  

NASA Astrophysics Data System (ADS)

The increasing demand for clean, efficient energy has strongly influenced the direction of nanoscale research. One of the most promising areas of solar energy production lies with cadmium selenide quantum dots (CdSe QDs). As a means to improve the efficiency of solar energy conversion in QDs, metal nanoparticles have been examined. It has been shown that in certain systems the presence of these metal nanoparticles increase electron - hole charge separation thus providing extended times for electron harvesting. Most of the systems currently explored utilize gold nanoparticles, which is unsurprising due to the vast amount of synthetic methods for these particles and their plasmonic effects on the QDs. We seek to further examine these unique metal nanoparticle -quantum dot interactions through the study of CdSe QD - palladium nanoparticle systems. We employ both steady-state and time resolved ensemble fluorescence spectroscopy to observe the effects of increasing palladium nanoparticle concentrations on both the fluorescence intensity and lifetime of various CdSe QDs. We find that decreasing separation distance between the particles through increasing palladium concentration, leads to a stronger interaction between the particles. We find expected fluorescence quenching of the QDs at higher concentrations of palladium. At low palladium concentrations however we observe a unique fluorescence enhancement of the QDs. We use this data to explore the relative contributions of energy and electron transfer between the particles and determine the conditions under which the maximum effects of these interactions are observed.

Major, Kevin J.; Jones, Marcus

2011-09-01

280

41 CFR 102-118.45 - How does a transportation service provider (TSP) bill my agency for transportation and...  

Code of Federal Regulations, 2013 CFR

...Property Management 3 2013-01-01 2013-01-01 false How does a transportation service provider (TSP) bill my agency for transportation and transportation services? 102-118.45 Section 102-118.45 Public Contracts...

2013-01-01

281

41 CFR 102-118.195 - What documents must a transportation service provider (TSP) send to receive payment for a...  

Code of Federal Regulations, 2013 CFR

... false What documents must a transportation service provider (TSP) send to receive payment for a transportation billing? 102-118.195 Section...FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION...

2013-01-01

282

9 CFR 118.3 - Movement of detained biological products; Termination of detention.  

Code of Federal Regulations, 2013 CFR

...ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE VIRUSES, SERUMS, TOXINS, AND ANALOGOUS PRODUCTS; ORGANISMS AND VECTORS DETENTION; SEIZURE AND CONDEMNATION § 118.3 Movement of detained biological products; Termination...

2013-01-01

283

46 CFR 118.420 - Pre-engineered fixed gas fire extinguishing systems.  

Code of Federal Regulations, 2010 CFR

... FIRE PROTECTION EQUIPMENT Fixed Fire Extinguishing and Detecting Systems § 118.420 Pre-engineered fixed gas fire extinguishing...light to indicate discharge; (2) An audible alarm that sounds upon discharge; and (3) A means to reset devices...

2009-10-01

284

46 CFR 118.420 - Pre-engineered fixed gas fire extinguishing systems.  

Code of Federal Regulations, 2010 CFR

... FIRE PROTECTION EQUIPMENT Fixed Fire Extinguishing and Detecting Systems § 118.420 Pre-engineered fixed gas fire extinguishing...light to indicate discharge; (2) An audible alarm that sounds upon discharge; and (3) A means to reset devices...

2010-10-01

285

Photometric Observations of Asteroids 31 Euphrosyne, 118 Peito, 13 Egeria, 196 Philomena, and 471 Papagena  

NASA Astrophysics Data System (ADS)

. Medjante fotometria fotoelectrica BV fueron estudiados 31 EUPHROSYNE, 118 PEITHO en su oposici6n de 1988, y 13 EGERIA, 196 PHILOMENA y 471 PAPAGENA en su oposici6n de 1989, con el fin de determinar su per1odo de rotaci6n, la orientaci6n del polo y la forma de los asteroides. Se presentan las curvas de luz de 118 PEITHO y 13 EGERIA. ABSTRACT. The asteroids 31 EUPHROSYNE and 118 PEITHO at their opposition of 1988, and 13 EGERIA, 196 PHILOMENA and 471 PAPAGENA at their opposition of 1989, have been studied by means of photoelectric photometry BV with the purpose of determining their rotation periods, pole orientation and shapes. The lightcurves of 118 PEITHO and 13 EGERIA are shown. : ASTEROIDS - PHOTOMETRY

Licandro, J.; Gallardo, T.; Tancredi, G.

1990-11-01

286

34 CFR 300.118 - Children in public or private institutions.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 false Children in public or private institutions...STATES FOR THE EDUCATION OF CHILDREN WITH DISABILITIES State Eligibility Least Restrictive Environment (lre) § 300.118 Children in public or private...

2013-07-01

287

34 CFR 300.118 - Children in public or private institutions.  

Code of Federal Regulations, 2010 CFR

... 2009-07-01 false Children in public or private institutions...STATES FOR THE EDUCATION OF CHILDREN WITH DISABILITIES State Eligibility Least Restrictive Environment (lre) § 300.118 Children in public or private...

2009-07-01

288

34 CFR 300.118 - Children in public or private institutions.  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Children in public or private institutions...STATES FOR THE EDUCATION OF CHILDREN WITH DISABILITIES State Eligibility Least Restrictive Environment (lre) § 300.118 Children in public or private...

2010-07-01

289

25 CFR 900.118 - Do these construction contract regulations apply to construction management services?  

Code of Federal Regulations, 2010 CFR

...âconstruction contractâ regulations apply to construction management services? 900.118 Section 900...construction contract regulations apply to construction management services? No. Construction management services may be contracted...

2009-04-01

290

25 CFR 900.118 - Do these construction contract regulations apply to construction management services?  

Code of Federal Regulations, 2010 CFR

...âconstruction contractâ regulations apply to construction management services? 900.118 Section 900...construction contract regulations apply to construction management services? No. Construction management services may be contracted...

2010-04-01

291

10 CFR 51.118 - Final environmental impact statement-notice of availability.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Final environmental impact statement-notice of availability...Documents § 51.118 Final environmental impact statementnotice of availability...Upon completion of a final environmental impact statement or any supplement to a...

2013-01-01

292

40 CFR 81.118 - Southwest Missouri Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2010 CFR

...Regions § 81.118 Southwest Missouri Intrastate Air Quality Control Region. The Southwest Missouri Intrastate Air Quality...delimited): In the State of Missouri: Barton County, Barry County...Greene County, Henry County, Hickory County, Howell County,...

2009-07-01

293

40 CFR 81.118 - Southwest Missouri Intrastate Air Quality Control Region.  

Code of Federal Regulations, 2010 CFR

...Regions § 81.118 Southwest Missouri Intrastate Air Quality Control Region. The Southwest Missouri Intrastate Air Quality...delimited): In the State of Missouri: Barton County, Barry County...Greene County, Henry County, Hickory County, Howell County,...

2010-07-01

294

41 CFR 102-118.630 - How must a TSP refund amounts due to GSA?  

Code of Federal Regulations, 2013 CFR

...GSA Audit Division at: General Services Administration Transportation Audit Division (QMCA) Crystal Plaza 4, Room 300 2200 Crystal Drive Arlington, VA 22202 www.gsa.gov/transaudits Note to § 102-118.630:...

2013-01-01

295

41 CFR 105-53.118 - Locations of material available for public inspection.  

Code of Federal Regulations, 2013 CFR

...Section 105-53.118 Public Contracts and Property... GENERAL SERVICES ADMINISTRATION 53-STATEMENT OF...material available for public inspection. GSA...materials available for public inspection and copying...a) General Services Administration, 18th & F...

2013-01-01

296

24 CFR 904.118 - Homeowners association-planned unit development (PUD).  

Code of Federal Regulations, 2013 CFR

24 Housing and Urban Development 4 2013-04-01 2013-04-01...Section 904.118 Housing and Urban Development OFFICE OF ASSISTANT SECRETARY...HOUSING, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT LOW RENT HOUSING...

2013-04-01

297

40 CFR 82.118 - Compliance by wholesalers, distributors and retailers.  

Code of Federal Regulations, 2012 CFR

...Products Using Ozone-Depleting Substances § 82.118 Compliance...spare parts manufactured with controlled substances and selling those parts for...products manufactured with a controlled substance that are supplied to the...

2012-07-01

298

46 CFR 201.118 - Witness fees; expenses of taking depositions.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Witness fees; expenses of taking depositions...and Depositions (Rule 11) § 201.118 Witness fees; expenses of taking depositions. Witnesses whose depositions are taken pursuant to...

2012-10-01

299

46 CFR 201.118 - Witness fees; expenses of taking depositions.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Witness fees; expenses of taking depositions...and Depositions (Rule 11) § 201.118 Witness fees; expenses of taking depositions. Witnesses whose depositions are taken pursuant to...

2011-10-01

300

32 CFR 865.118 - Availability of Discharge Review Board documents for public inspection and copying.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Availability of Discharge Review Board documents for public inspection and copying...ORGANIZATION AND MISSION-GENERAL PERSONNEL REVIEW BOARDS Air Force Discharge Review Board § 865.118 Availability of...

2013-07-01

301

33 CFR 118.45 - Lighting for the protection of aerial navigation.  

Code of Federal Regulations, 2013 CFR

... 2013-07-01 2013-07-01 false Lighting for the protection of aerial navigation...DEPARTMENT OF HOMELAND SECURITY BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.45 Lighting for the protection of aerial...

2013-07-01

302

27 CFR 46.118 - Certificate in lieu of lost or destroyed special tax stamp.  

Code of Federal Regulations, 2013 CFR

...of lost or destroyed special tax stamp. 46.118 Section...Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT...RELATING TO TOBACCO PRODUCTS AND CIGARETTE PAPERS AND TUBES Rules for Special (Occupational) Tax Special Tax Stamps §...

2013-04-01

303

Absence of structure in the 20,22Ne + 118Sn quasi-elastic barrier distribution  

Microsoft Academic Search

Motivated by the extreme deformation parameters of the projectile, we have measured quasi-elastic scattering for 20Ne+118Sn. In contrast to calculations based on known collective states, the experimental barrier distribution is structureless. A comparison with the system 22Ne+118Sn shows that this smoothing is unlikely to be due to nucleon- or ?-transfer channels, and is more likely to be due to coupling

E. Piasecki; ?. ?widerski; P. Czosnyka; M. Kowalczyk; K. Piasecki; M. Witecki; T. Czosnyka; J. Jastrzebski; A. Kordyasz; M. Kisielinski; T. Krogulski; M. Mutterer; S. Khlebnikov; W. H. Trzaska; K. Hagino; N. Rowley

2005-01-01

304

Analysis of Central Events in the Interactions of Relativistic Heavy Ions with Emulsion Nuclei at 118.4 GeV  

SciTech Connect

Data on the multiplicity of the secondary produced particles in the central events from the interactions of 32S with AgBr nuclei at 118.4 GeV. A different selection criteria of the central collision in heavy ion interactions was investigated. The multiplicity distributions of the different produced shower particles (mainly pions) in the central events for each criteria was studied. The multiplicity distributions of the target fragments emitted in the central events was fitted by a Gaussian distribution. The target analysis of the experimental data shows agreement with the limiting fragmentation hypothesis.

EL-Falaky, E. [Physics Department, Faculty of Education, Suez Canal University, El-Suez (Egypt)

2007-02-14

305

Biotemplated aqueous-phase palladium crystallization in the absence of external reducing agents.  

PubMed

A new synthetic strategy enabling highly controlled aqueous-phase palladium crystallization on the tobacco mosaic virus (TMV) is demonstrated without the addition of external reducing agents. This low cost, solution processing method yields continuous and uniform coatings of polycrystalline palladium on TMV, creating highly uniform palladium nanowires of tens of nanometers in thickness and hundreds of nanometers in length. Our approach utilizes a palladium chloride precursor to produce metallic Pd coatings on TMV without the need for an external reducing agent. X-ray photoelectron spectroscopy and in situ transmission electron microscopy were used to confirm the reduction of the surface palladium oxide layer on the palladium metal wires during room temperature hydrogenation. This leads to metallic palladium nanowires with surfaces free of residual organics, making these structures suitable for applications in nanoscale electronics. PMID:20845914

Lim, Jung-Sun; Kim, Seung-Min; Lee, Sang-Yup; Stach, Eric A; Culver, James N; Harris, Michael T

2010-10-13

306

Superlattices of platinum and palladium nanoparticles  

SciTech Connect

The authors have used a nonionic inverse micelle synthesis technique to form nanoclusters of platinum and palladium. These nanoclusters can be rendered hydrophobic or hydrophilic by the appropriate choice of capping ligand. Unlike Au nanoclusters, Pt nanoclusters show great stability with thiol ligands in aqueous media. Alkane thiols, with alkane chains ranging from C{sub 6} to C{sub 18} were used as hydrophobic ligands, and with some of these they were able to form 2-D and/or 3-D superlattices of Pt nanoclusters as small as 2.7 nm in diameter. Image processing techniques were developed to reliably extract from transmission electron micrographs (TEMs) the particle size distribution, and information about the superlattice domains and their boundaries. The latter permits one to compute the intradomain vector pair correlation function of the particle centers, from which they can accurately determine the lattice spacing and the coherent domain size. From these data the gap between the particles in the coherent domains can be determined as a function of the thiol chain length. It is found that as the thiol chain length increases, the gaps between particles within superlattice domains increases, but more slowly than one might expect, possibly indicating thiol chain interdigitation.

MARTIN,JAMES E.; WILCOXON,JESS P.; ODINEK,JUDY G.; PROVENCIO,PAULA P.

2000-04-06

307

Palladium exposure of barley: uptake and effects.  

PubMed

Motor vehicles are now equipped with exhaust gas catalytic converters containing rare metals, such as palladium (Pd), platinum and rhodium, as catalytic active materials, leading to significantly increased emission of these metals. Compared with platinum and rhodium, low concentrations of Pd have been shown to have more serious effects on cells and organisms. In the present study, uptake of Pd by barley and behaviour of Pd nanoparticles in nutrient solutions used to grow plants were observed in order to develop a model of Pd exposure of plant systems. Pd determination was performed using a selective separation and pre-concentration procedure, which was further developed for this study, and coupled to graphite furnace atomic absorption spectrometry. The results show that uptake of Pd depends on Pd particle diameter. Compared to other toxic metals, like mercury, Pd causes stress effects in leaves at lower concentrations in nutrient solutions. Furthermore, Pd particles are dissolved at different rates, depending on size, in the nutrient solution during plant growth. PMID:18304202

Battke, F; Leopold, K; Maier, M; Schmidhalter, U; Schuster, M

2008-03-01

308

Structure of Palladium Nanoclusters for Hydrogen Gas Sensors  

SciTech Connect

Palladium nanoclusters produced by inert gas aggregation/magnetron sputtering are used as building blocks for the construction of nano electronic devices with large surface to volume ratios that can be used as sensitive hydrogen gas sensors in fuel cells and in petrochemical plants. X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), and high resolution transmission electron microscopy (HRTEM) have been used to characterize the structure, lattice constant, particle diameter and oxide thickness of the palladium nanoclusters in order to understand the operation of these sensors. Grazing incidence XRD (GIXRD) of heat treated Pd clusters has shown that the palladanite structure forms at elevated temperatures.

Stevens, K.J.; Ingham, B.; Toney, M.F.; Brown, S.A.; Lassesson, A.; /SLAC, SSRL /Canterbury U.

2009-05-11

309

The Influence of Target Temperature on Crater Morphometry: Experiments and Hydrocode Modelling  

NASA Astrophysics Data System (ADS)

Experimental data on the effect of target temperature on impact crater formation is sparse. Experimental data are presented detailing crater morphometry changes as a function of target temperature in the range 118-500 K.

Price, M. C.; Burchell, M. J.; Cole, M. J.

2011-03-01

310

Enhancement of a catalysis-based fluorometric detection method for palladium through rational fine-tuning of the palladium species.  

PubMed

Metal analyses in chemistry, materials science, and environmental science are currently performed using techniques such as inductively coupled plasma mass spectrometry and X-ray fluorescence, which require expensive instrumentation and are not high-throughput. Although fluorescent probes are known for their sensitivity and specificity and are amenable to high-throughput analyses, the robustness of such analyses are typically limited due to their binding-based nature. Herein we report an improvement of our previously reported catalysis-based fluorescent probe for palladium by rationally fine-tuning the redox and coordination chemistries of the palladium species involved in the O-deallylation reaction. This method now rivals current analytical methods with respect to sensitivity. We demonstrate palladium detection in various active pharmaceutical ingredients, spent catalytic converter materials, and a metal scavenger resin. Thus, fluorescent methods may have the potential for substituting the current instrument-intensive techniques. PMID:19317401

Garner, Amanda L; Song, Fengling; Koide, Kazunori

2009-04-15

311

Novel mechanisms of platinum drug resistance identified in cells selected for resistance to JM118 the active metabolite of satraplatin  

Microsoft Academic Search

PurposeThe goal of this study was to identify molecular determinants of sensitivity and resistance to JM118, the active metabolite\\u000a of satraplatin, an orally bioavailable cisplatin analog that has activity in prostate cancer.\\u000a \\u000a \\u000a \\u000a Experimental designHuman ovarian carcinoma 2008\\/JM118 cells were derived from parental 2008 cells by repeated exposure to JM118; the revertant\\u000a 2008\\/JM118\\/REV subline was isolated from the 2008\\/JM118 cells by

Goli Samimi; Shuichi Kishimoto; Gerald Manorek; James K. Breaux; Stephen B. Howell

2007-01-01

312

41 CFR 102-118.675 - What recourse does my agency have if a TSP does not pay a transportation debt?  

Code of Federal Regulations, 2013 CFR

...does my agency have if a TSP does not pay a transportation debt? 102-118.675 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Claims and Appeal...

2013-01-01

313

41 CFR 102-118.85 - Can my agency use a Government contractor issued charge card to pay for transportation services?  

Code of Federal Regulations, 2013 CFR

...Government contractor issued charge card to pay for transportation services? 102-118.85 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Ordering and Paying...

2013-01-01

314

41 CFR 102-118.210 - May my agency use bills of lading other than the GBL for a transportation shipment?  

Code of Federal Regulations, 2013 CFR

...use bills of lading other than the GBL for a transportation shipment? 102-118.210 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Use of Government...

2013-01-01

315

41 CFR 102-118.230 - What if my agency creates or eliminates a field office approved to prepare transportation documents?  

Code of Federal Regulations, 2013 CFR

...eliminates a field office approved to prepare transportation documents? 102-118.230 Section 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Use of Government...

2013-01-01

316

Platinum-monolayer Electrocatalysts: Palladium Interlayer on IrCo Alloy Core Improves Activity in Oxygen-reduction Reaction  

SciTech Connect

We describe the synthesis and electrocatalytic properties of a new low-Pt electrocatalyst consisting of an IrCo core, a Pd interlayer, and a surface Pt monolayer, emphasizing the interlayer's role in improving electrocatalytic activity for the oxygen-reduction reaction on Pt in HClO{sub 4} solution. We prepared the IrCo alloys by decomposing, at 800 C, hexacyanometalate, KCoIr(CN){sub 6}, adsorbed on the carbon surfaces. The synthesis of Ir{sub 3}Co/C involved heating a mix of metal salts and carbon in hydrogen at 500 C. Thereafter, we placed a palladium and/or platinum monolayer on them via the galvanic displacement of an underpotentially deposited copper monolayer. The electrocatalysts were characterized using structural- and electrochemical-techniques. For PtML/PdML/IrCo/C, we observed a Pt mass activity of 1.18 A/mg{sub (Pt)} and the platinum-group-metals mass of 0.16 A/mg{sub (Pt, Pd, Ir)}. In comparison, without a Pd interlayer, i.e., Pt{sub ML}/IrCo/C, the activities of 0.15 A/mg{sub (Pt)} and 0.036 A/mg{sub (Pt, Pd, Ir)} were considerably lower. We consider that the palladium interlayer plays an essential role in achieving high catalytic activity by adjusting the electronic interaction of the platinum monolayer with the IrCo core, so that it accelerates the kinetics of adsorption and desorption of the intermediates of oxygen reduction. A similar trend was observed for Pt{sub ML}/Pd{sub ML} and Pt{sub ML} deposited on Ir{sub 3}Co/C alloy core. We used density functional theory to interpret the observed phenomena.

Gong, K.; Chen, W.-F.; Sasaki, K.; Su, D.; Vukmirovic, M.B.; Zhou, W.; Izzo, E.L.; Perez-Acosta, C.; Hirunsit, P.; Balbuena, P.B.; Adzic, R.R.

2010-11-15

317

On the corrosion behavior and biocompatibility of palladium-based dental alloys  

NASA Astrophysics Data System (ADS)

Palladium-based alloys have been used as dental restorative materials for about two decades with good clinical history. But there have been clinical case reports showing possible allergy effects from these alloys. The aim of this study was to characterize the corrosion behavior and mechanisms of several palladium-based dental alloys by potentiodynamic polarization methods, electrochemical impedance spectroscopy (EIS), and scanning Kelvin probe force microscopy/atomic force microscopy (SKPFM/AFM), and to evaluate their biocompatibility by a cell culture technique and an animal model. Using SKPFM/AFM and scanning electron microscopy, the Ru-enriched phase from the use of ruthenium as a grain-refining element was identified as being slightly more noble than the palladium solid solution matrix in a high-palladium alloy. Other secondary precipitates that exist in the microstructures of these high-palladium alloys have minimal differences in Volta potential compared to the matrix. For high-palladium alloys, corrosion is generally uniform due to the predominant palladium content in the different phases. Potentiodynamic polarization and EIS have shown that representative palladium-silver alloys have low corrosion tendency and high corrosion resistance, which are equivalent to a well-known high-noble gold-palladium alloy in simulated body fluid and oral environments. The palladium-silver alloys tested are resistant to chloride ion corrosion. Passivation and dealloying have been identified for all of the tested palladium-silver alloys. The great similarity in corrosion behavior among the palladium-silver alloys is attributed to their similar chemical compositions. The variation in microstructures of palladium-silver alloys tested does not cause significant difference in corrosion behavior. The corrosion resistance of these palladium-silver alloys at elevated potentials relevant to oral environment is still satisfactory. The release of elements from representative dental palladium alloys into cell culture media did not significantly affect the proliferation and viability of human fibroblast cells. Subcutaneous implantation of samples of one high-palladium alloy, one palladium-silver alloy and a gold alloy into mice did not cause any significant histological change in their skin and spleen. The presence of an oxide layer from dental laboratory processing of these alloys did not cause any adverse reactions from the cells or animals. The biocompatibility of the dental palladium-based alloys evaluated by the cell culture and animal models is satisfactory, suggesting that these alloys are safe for clinical usage.

Sun, Desheng

318

The ternary system cerium-palladium-silicon  

SciTech Connect

Phase relations in the ternary system Ce-Pd-Si have been established for the isothermal section at 800 deg. C based on X-ray powder diffraction and EMPA techniques on about 130 alloys, which were prepared by arc-melting under argon or powder reaction sintering. Eighteen ternary compounds have been observed to participate in the phase equilibria at 800 deg. C. Atom order was determined by direct methods from X-ray single-crystal counter data for the crystal structures of tau{sub 8}-Ce{sub 3}Pd{sub 4}Si{sub 4} (U{sub 3}Ni{sub 4}Si{sub 4}-type, Immm; a=0.41618(1), b=0.42640(1), c=2.45744(7) nm), tau{sub 16}-Ce{sub 2}Pd{sub 14}Si (own structure type, P4/nmm; a=0.88832(2), c=0.69600(2) nm) and also for tau{sub 18}-CePd{sub 1-x}Si{sub x} (x=0.07; FeB-type, Pnma; a=0.74422(5), b=0.45548(3), c=0.58569(4) nm). Rietveld refinements established the atom arrangement in the structures of tau{sub 5}-Ce{sub 3}PdSi{sub 3} (Ba{sub 3}Al{sub 2}Ge{sub 2}-type, Immm; a=0.41207(1), b=0.43026(1), c=1.84069(4) nm) and tau{sub 13}-Ce{sub 3-x}Pd{sub 20+x}Si{sub 6} (0<=x<=1, Co{sub 20}Al{sub 3}B{sub 6}-type, Fm3-barm; a=1.21527(2) nm). The ternary compound Ce{sub 2}Pd{sub 3}Si{sub 3} (structure-type Ce{sub 2}Rh{sub 1.35}Ge{sub 4.65}, Pmmn; a=0.42040(1), b=0.42247(1), c=1.72444(3) nm) was detected as a high-temperature compound, however, does not participate in the equilibria at 800 deg. C. Phase equilibria in Ce-Pd-Si are characterized by the absence of cerium solubility in palladium silicides. Mutual solubility among cerium silicides and cerium-palladium compounds are significant whereby random substitution of the almost equally sized atom species palladium and silicon is reflected in extended homogeneous regions at constant Ce-content such as for tau{sub 2}-Ce(Pd{sub x}Si{sub 1-x}){sub 2} (AlB{sub 2}-derivative type), tau{sub 6}-Ce(Pd{sub x}Si{sub 1-x}){sub 2} (ThSi{sub 2}-type) and tau{sub 7}-CePd{sub 2-x}Si{sub 2+x}. The crystal structures of compounds tau{sub 4}-Ce{sub a}pprox{sub 8}Pd{sub a}pprox{sub 46}Si{sub a}pprox{sub 46}, tau{sub 12}-Ce{sub a}pprox{sub 29}Pd{sub a}pprox{sub 49}Si{sub a}pprox{sub 22}, tau{sub 15}-Ce{sub a}pprox{sub 22}Pd{sub a}pprox{sub 67}Si{sub a}pprox{sub 11}, tau{sub 17}-Ce{sub a}pprox{sub 5}Pd{sub a}pprox{sub 77}Si{sub a}pprox{sub 18} and tau{sub 18}-CePd{sub 1-x}Si{sub x} (xapprox0.1) are still unknown. - Abstract: Phase relations in the ternary system Ce-Pd-Si have been established for the isothermal section at 800 deg. C based on X-ray powder diffraction, metallography, SEM and EMPA techniques on about 130 alloys. 18 ternary compounds were observed. Display Omitted

Lipatov, Alexey [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Wien (Austria); Materials Science Department of the Moscow State University, Leninskie Gory, GSP-1, 119991 Moscow (Russian Federation); Gribanov, Alexander [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Wien (Austria); Chemistry Department of the Moscow State University, Leninskie Gory, GSP-1, 119991 Moscow (Russian Federation); Grytsiv, Andriy [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Wien (Austria); Rogl, Peter, E-mail: peter.franz.rogl@univie.ac.a [Institute of Physical Chemistry, University of Vienna, Waehringerstrasse 42, A-1090 Wien (Austria); Murashova, Elena; Seropegin, Yurii [Chemistry Department of the Moscow State University, Leninskie Gory, GSP-1, 119991 Moscow (Russian Federation); Giester, Gerald [Institute of Mineralogy and Crystallography, University of Vienna, Althanstrasse 14, A-1090 Wien (Austria); Kalmykov, Konstantin [Chemistry Department of the Moscow State University, Leninskie Gory, GSP-1, 119991 Moscow (Russian Federation)

2009-09-15

319

Metal allergen of the 21st century--a review on exposure, epidemiology and clinical manifestations of palladium allergy.  

PubMed

Consumers are mainly exposed to palladium from jewellery and dental restorations. Palladium contact allergy is nearly always seen together with nickel allergy, as palladium and nickel tend to cross-react. We aimed to analyse the available palladium patch test data and case reports to determine whether the prevalence of palladium mono-sensitization has increased. Based on available patch test data from the period 1986-2008, a total of 10 778 patients were patch tested with palladium chloride. The median prevalence of palladium allergy was 7.8% (range <1.0-19.0%) in dermatitis patients and 7.4% (range 1.3-13.9%) in dental patients. The median prevalence of palladium mono-sensitization (defined as the presence of palladium allergy and the absence of nickel allergy) was 0.2% (range 0-1.6%) in dermatitis patients and 0.5% (range 0-7.2%) in dental patients. A slight increase in the prevalence of palladium mono-sensitization was observed over the study period. We conclude that clinically relevant palladium allergy should mainly be suspected in patients who present with allergic contact granulomas at sites of piercing, but also in patients who have clinical disease and palladium patch test reactivity without concomitant nickel reactivity. Palladium salts should be included in dental screening patch test series. Palladium use in jewellery should be limited until we know more about the risk of sensitization. PMID:21392026

Faurschou, Annesofie; Menn, Torkil; Johansen, Jeanne D; Thyssen, Jacob P

2011-04-01

320

Initiation of electroless nickel plating on copper, palladium-activated copper, gold, and platinum  

SciTech Connect

The catalytic activity of copper, palladium-activated copper, gold, and platinum for electro-oxidation of hypophosphite and electroless nickel plating was investigated in an ammoniacal solution of pH 8.8 at 50/sup 0/C by potential measurements and linear sweep voltammetry from -0.3 to -0.92V vs. SCE. Early stages of nickel plating on copper-palladium substrates were studied by scanning electron microscopy in conjunction with EDAX. It was found that palladium-activated copper and gold were catalytically active in the entire range of potentials examined; copper was active below -0.6 platinum was not active at all. Small amounts of electrolytically deposited nickel considerably increased the electro-oxidation rate of hypophosphite on copper, gold, and palladium. TEM examinations showed that activation of copper in a PdCl/sub 2//HCl solution resulted in the deposition of palladium in the form of separate patches. Electroless nickel deposition on copper substrates with separate palladium spots took place on copper and palladium independently of each other. The deposition on palladium was faster than that on copper. It was concluded that the activation of copper substrates around palladium spots occurred solely through a spontaneous potential shift, induced by electro-oxidation of hypophosphite on the palladium spots. It was suggested that small amounts of one metal synergistically enhanced the catalytic activity of the other metals.

Flis, J.; Duquette, D.J.

1984-02-01

321

Thermal Neutron Capture Cross Sections of The Palladium Isotopes.  

National Technical Information Service (NTIS)

We have measured precise thermal neutron capture (gamma)-ray cross sections (sigma)(sub (gamma)) for all stable Palladium isotopes with the guided thermal neutron beam from the Budapest Reactor. The data were compared with other data from the literature a...

R. B. Firestone M. Krticka D. P. McNabb B. Sleaford U. Agvaanluvsan T. Belgya Z. Revay

2005-01-01

322

Thermal neutron capture cross sections of the palladium isotopes  

NASA Astrophysics Data System (ADS)

Precise thermal neutron capture ?-ray cross sections ?? were measured for all elements with Z=1-83,90, and 92, except for He and Pm, at the Budapest Reactor. These data were evaluated with additional information from the literature to generate the Evaluated Gamma-ray Activation File (EGAF). Isotopic radiative neutron cross sections can be deduced from the total transition cross section feeding the ground state, ?0=???(GS) if the decay scheme is complete. The EGAF file contains partial ?-ray cross sections for all stable palladium isotopes. None of these decay schemes are complete, although in each case transitions de-exciting low-lying levels are known. We have performed Monte Carlo simulations of the palladium thermal neutron capture decay schemes using the computer code DICEBOX. The simulated populations of low low-lying levels are normalized to the measured ?? values from EGAF and the total radiative neutron cross section ?0 is obtained. The ?0 values derived for the palladium isotopes agree well with previous measurements and were in several cases more precise. Complementary use of ?-ray cross-section data and Monte Carlo calculations has proven effective in determining both the palladium total radiative cross sections and new nuclear structure information.

Krti?ka, M.; Firestone, R. B.; McNabb, D. P.; Sleaford, B.; Agvaanluvsan, U.; Belgya, T.; Revay, Z. S.

2008-05-01

323

Fibre optics in palladium-based hydrogen sensing  

Microsoft Academic Search

Hydrogen sensing at low concentrations in the order of tens to hundreds of parts per million ( ppm) over extended periods requires highly sensitive and stable sensor technology. Palladium and its alloys are widely used in hydrogen sensing as they show a high and selective affinity for hydrogen. On exposure to hydrogen, Pd experiences a volumetric expansion, roughly proportional to

R. R. J. Maier; B. J. S. Jones; J. S. Barton; S. McCulloch; T. Allsop; J. D. C. Jones; I. Bennion

2007-01-01

324

Operation of platinum-palladium catalysts with leaded gasoline.  

PubMed Central

The effect of various fuel additives on the ability of platinum-palladium catalytic converters to remove the carbon monoxide and hydrocarbon components of automotive exhaust has been examined. Engine dynamometer studies suggest that these catalysts may be successfully used in conjunction with fuels of relatively high tetraethyllead concentrations, provided the ethylene dibromide portion of the scavenger is excluded.

Teague, D M; Clougherty, L B; Speca, A N

1975-01-01

325

Iridium oxide and palladium modified nitric oxide microsensor  

Microsoft Academic Search

An electrochemical microsensor, constructed by chemical modification of Nafion, poly(vinyl pyridine) (PVP), palladium and iridium oxide onto a platinum microelectrode, has been developed for the determination of nitric oxide (NO). This microsensor exhibits excellent catalytic activity toward NO oxidation, which is confirmed by differential pulse voltammetry. Cyclic voltammetry and differential pulse amperometry are also performed to measure NO. The catalytic

Yuezhong Xian; Wenliang Sun; Jian Xue; Min Luo; Litong Jin

1999-01-01

326

Migration behavior of palladium in UO(sub 2), (3).  

National Technical Information Service (NTIS)

Palladium (Pd) is easily released from UO(sub 2) kernels in HTGR coated fuel particles, and reacts with SiC coating layer. In addition, Pd is one of metallic fission products in irradiation UO(sub 2), which constitutes in dissoluble residue in reprocessin...

M. Yoneyama S. Sato H. Ohashi T. Ogawa A. Ito

1992-01-01

327

Interaction of hydrogen with palladium surface: FIM and FEM studies  

Microsoft Academic Search

In the present paper, we focus on the geometrical and electronic changes in palladium surface structure which appeared during its interaction with hydrogen in the presence of an external electric field. The interaction process was examined by using the field ion microscopy (FIM) as well as the field emission microscopy (FEM) techniques. In order to study the geometrical changes in

A. Tomaszewska; A. Ciszewski; Z. M. St?pie?

2008-01-01

328

Deactivation of palladium catalyst in catalytic combustion of methane  

Microsoft Academic Search

Catalytic combustion of natural gas, for applications such as gas turbines, can reduce NOx emissions. Palladium-on-stabilised alumina has been found to be the most efficient catalyst for the complete oxidation of methane to carbon dioxide and water. However, its poor durability is considered to be an obstruction for the development of catalytic combustion. This work was aimed at identifying the

Patrick Euzen; Jean-Herv Le Gal; Bernadette Rebours; Grard Martin

1999-01-01

329

CATALYTIC COMBUSTION OF METHANE OVER PALLADIUM-BASED CATALYSTS  

Microsoft Academic Search

Palladium-based catalysts are widely applied in exhaust catalytic converter and catalytic combustion systems. The mechanism for methane oxidation on a Pd-based catalyst is complex. Catalyst activity is influenced by variations in the process pressure and temperature, by the gas mixture composition, by the type of support and various additives, and by pretreatment under reducing or oxidizing atmospheres. In this paper,

Dragos Ciuparu; Maxim R. Lyubovsky; Eric Altman; Lisa D. Pfefferle; Abhaya Datye

2002-01-01

330

Room-temperature hydrogen sensor based on palladium nanowires  

Microsoft Academic Search

Palladium (Pd) nanowires, synthesized by template-nanomanufacturing techniques, has been studied for hydrogen gas-sensing applications at room temperature. In this study, parallel arrays of Pd nanowires were fabricated by electrodeposition from an aqueous plating solution onto the surface of highly oriented pyrolytic graphite (HOPG). The nanowires were then transferred onto a polystyrene film and silver electrical contact pads were fabricated by

Massood Z. Atashbar; D. Banerji; S. Singamaneni

2005-01-01

331

Batch Studies of Sodium Tetraphenylborate Decomposition on Reduced Palladium Catalyst  

SciTech Connect

In these batch experiments we obtained preliminary information on palladium based catalytic decomposition of sodium tetraphenylborate (NaTPB). These preliminary data provide necessary data to design subsequent catalytic decomposition experiments for NaTPB using a continuous stirred tank reactor (CSTR).

Barnes, M.J.

2001-02-13

332

Physical chemical properties of polyimide palladium nano - composite membranes  

Microsoft Academic Search

Polyimide polymer membranes posses' exceptional physical - chemical properties including excellent stability at relatively high temperatures (? 400C), superior mechanical properties, and are highly resistant to various chemicals. Palladium is well known for its unique physical - chemical interactions with hydrogen. Interest in metal polymer composites can be attributed to the drive to produce a material with the savings in

Patrick Ndungu; Olushola Adeniyi; Leslie Petrik; Alexander Nechaev

2011-01-01

333

MOCVD of palladium films: kinetic aspects and film properties  

Microsoft Academic Search

Palladium (Pd), a well-known catalytic material, is used in many hydrogenation reactions in the chemical industry. The method of catalyst preparation strongly affects its catalytic activity. The MOCVD technique is more expensive compared to the classical wet impregnation. However, a great advantage of this method is deposition of small amounts of catalysts finely dispersed on the outer and inner surface

V. K. Wunder; S. Schmid; N. Popovska; G. Emig

2002-01-01

334

Hydrogen storage studies of palladium decorated nitrogen doped graphene nanoplatelets.  

PubMed

Hydrogen storage in materials is of significant importance in the present scenario of depleting conventional energy sources. Porous solids such as activated carbon or nanostructured carbon materials have promising future as hydrogen storage media. The hydrogen storage capacity in nanostructured carbon materials can be further enhanced by atomic hydrogen spillover from a supported catalyst. In the present work, the hydrogen storage properties of nitrogen doped graphene nanoplatelets (N-GNP) and palladium decorated nitrogen doped graphene nanoplatelets (Pd/N-GNP) have been investigated. The results show that hydrogen uptake capacity of nitrogen doped graphene nanoplatelets and palladium decorated nitrogen doped graphene nanoplatelets at pressure 32 bar and temperature 25 degrees C is 0.42 wt% and 1.25 wt% respectively. The dispersion of palladium nanoparticles increases the hydrogen storage capacity of nitrogen doped graphene nanoplatelets by 0.83 wt%. This may be due to high dispersion of palladium nanoparticles and strong adhesion between metal and graphene nanoplatelets over the surface of N-GNP, which enhances the spillover mechanism. Thus, an increase in the hydrogen spillover effect and the binding energy between metal nanoparticles and supporting material achieved by nitrogen doping has been observed to result in a higher hydrogen storage capacity of pristine GNP. PMID:22962796

Vinayan, B P; Sethupathi, K; Ramaprabhu, S

2012-08-01

335

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

NASA Astrophysics Data System (ADS)

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

Kathawa, J.; Fry, C.; Thoennessen, M.

2013-01-01

336

The Adsorption and Diffusion of Electrolytic Hydrogen in Palladium  

Microsoft Academic Search

A sensitive electrochemical technique, which permits the recording of the instantaneous rate of permeation of electrolytic hydrogen through palladium, is described. Results were obtained under conditions required by theory for the diffusion of hydrogen with the use of electronic potentiostats. Analysis of the results shows the validity of the equations previously deduced for the diffusion of hydrogen. No anomalies in

M. A. V. Devanathan; Z. Stachurski

1962-01-01

337

Elastic and Inelastic Proton Scattering from Even Palladium Isotopes.  

National Technical Information Service (NTIS)

Aspects of scattering experiments from palladium isotopes are discussed. Five even Pd isotopes are selected to study anharmonicities in the low-lying spectrum. Analysis of the 12 MeV and 52 MeV experimental data taken from the literature is performed by a...

H. V. von Geramb G. Palla

1980-01-01

338

Palladium-Catalyzed Asymmetric Hydrogenation of ?-Acyloxy-1-arylethanones.  

PubMed

First hand: The first example of a palladium-catalyzed asymmetric hydrogenation of ?-acyloxy ketones (1) was accomplished to give the hydrogenated products 2 with by far the highest catalytic efficiency in up to quantitative conversions and excellent enantioselectivities. The hydrogenated products could serve as important intermediates for the preparation of many drug candidates. TFE=2,2,2-trifluoroethanol. PMID:24038964

Chen, Jianzhong; Liu, Delong; Butt, Nicholas; Li, Chao; Fan, Dongyang; Liu, Yangang; Zhang, Wanbin

2013-09-13

339

Palladium-Catalyzed Coupling Reactions of Aryl Chlorides  

Microsoft Academic Search

Collectively, palladium-catalyzed cou- pling reactions represent some of the most powerful and versatile tools avail- able to synthetic organic chemists. Their widespread popularity stems in part from the fact that they are gen- erally tolerant to a large number of functional groups, which allows them to be employed in a wide range of applications. However, for many years a major

Adam F. Littke; Gregory C. Fu

2002-01-01

340

Thermal neutron capture cross sections of the palladium isotopes  

SciTech Connect

Precise thermal neutron capture {gamma}-ray cross sections {sigma}{sub {gamma}} were measured for all elements with Z=1-83,90, and 92, for He and Pm, at the Budapest Reactor. These data were evaluated with additional information from the literature to generate the Evaluated Gamma-ray Activation File (EGAF). Isotopic radiative neutron cross sections can be deduced from the total transition cross section feeding the ground state, {sigma}{sub 0}={sigma}{sigma}{sub {gamma}}(GS) if the decay scheme is complete. The EGAF file contains partial {gamma}-ray cross sections for all stable palladium isotopes. None of these decay schemes are complete, although in each case transitions de-exciting low-lying levels are known. We have performed Monte Carlo simulations of the palladium thermal neutron capture decay schemes using the computer code DICEBOX. The simulated populations of low low-lying levels are normalized to the measured {sigma}{sub {gamma}} values from EGAF and the total radiative neutron cross section {sigma}{sub 0} is obtained. The {sigma}{sub 0} values derived for the palladium isotopes agree well with previous measurements and were in several cases more precise. Complementary use of {gamma}-ray cross-section data and Monte Carlo calculations has proven effective in determining both the palladium total radiative cross sections and new nuclear structure information.

Krticka, M. [Charles University in Prague, Faculty of Mathematics and Physics, V Holesovickach 2, CZ-180 00 Prague 8 (Czech Republic); North Carolina State University, Raleigh, NC 27695 (United States); Firestone, R. B. [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); McNabb, D. P.; Sleaford, B.; Agvaanluvsan, U. [Lawrence Livermore National Laboratory, L-414, 7000 East Avenue, Livermore, CA 94551 (United States); Belgya, T.; Revay, Z. S. [Institute of Isotope and Surface Chemistry, H-1525, Budapest (Hungary)

2008-05-15

341

States built on the 10+ isomers in 118,120,122,124Sn  

NASA Astrophysics Data System (ADS)

The high-spin structure above the previously known 10+ isomers of the 118,120,122,124Sn isotopes was studied via prompt ?-ray spectroscopy. All isotopes were populated as fragments following the fission of much heavier compound nuclei formed in three fusion-fission reactions. The 118,120,122Sn isotopes were also independently populated and studied as evaporation residues in the 124Sn(n,xn?) reactions, with x=3,5,7. Transitions above the previously known 10+ isomers were observed for the first time and the corresponding level schemes above these isomers were established up to 6646-, 5673-, 5386-, and 5952-keV excitation energy for 118,120,122,124Sn, respectively. The experimental results are compared with predictions from shell-model calculations.

Fotiades, N.; Devlin, M.; Nelson, R. O.; Cizewski, J. A.; Krcken, R.; Clark, R. M.; Fallon, P.; Lee, I. Y.; Macchiavelli, A. O.; Younes, W.

2011-11-01

342

Neutron elastic scattering from 116,118,120,122,124Sn  

NASA Astrophysics Data System (ADS)

Accurate measurements of neutron differential elastic cross sections have been obtained from even isotopes of Sn. Data are presented for the elastic scattering of 11 MeV neutrons from 116, 118, 120, 122, 124Sn, the elastic scattering for 24 MeV neutrons from 116, 118, 124Sn and the neutron total cross section from 118, 120, 122, 124Sn in the energy ranges 5.0-10.6 MeV and 20.0-26.0 MeV. The elastic scattering data are analyzed in terms of an empirical optical-model potential. The obtained optical-potential parameters are analyzed in terms of energy and isospin dependence and compared with those obtained from proton elastic scattering on even Sn isotopes.

Rapaport, J.; Mirzaa, Mohammed; Hadizadeh, H.; Bainum, D. E.; Finlay, R. W.

1980-05-01

343

Sampling and Analysis Instruction for Borehole Sampling at 118-B-1 Burial Ground  

SciTech Connect

The Washington Closure Hanford (WCH) Field Remediation Project has removed all of the disposed materials and contaminated soil from the 118-B-1 Burial Ground with the exception of tritium-contaminated soil that is believed to extend from the bottom of the present excavation to groundwater and is believed to contribute to tritium contamination observed at down-gradient monitoring Well 199-B8-6. This sampling and analysis instruction (SAI) provides the requirements for sample collection and laboratory analysis for characterization of the vertical distribution of tritium contamination in the vadose zone soil below the 118-B-1 Burial Ground remedial action excavation.

W. S. Thompson

2007-04-02

344

Degradation of a xenobiotic textile dye, Disperse Brown 118, by Brevibacillus laterosporus.  

PubMed

The toxic textile dye, Disperse Brown 118, was degraded by Brevibacillus laterosporus. 96% decolorization was achieved within 48h at pH 7, 40C at 50mg dye l(-1) accompanied by significant increases in the activities of veratryl alcohol oxidase, tyrosinase and NADH-DCIP reductase. HPTLC and FT-IR spectroscopy confirmed biodegradation after dye decolorization. As identified by GC-MS, biodegradation products of Disperse Brown 118 were N-carbamoyl-2-[(8-chloroquinazolin-4-yl)oxy] acetamide and N-carbamoyl-2-(quinazolin-4-yloxy)acetamide which were much less toxic than parent dye as evidenced by phytotoxicity tests. PMID:23794049

Kurade, Mayur B; Waghmode, Tatoba R; Kabra, Akhil N; Govindwar, Sanjay P

2013-06-21

345

g factors in 116,118,120Sn: Sensitivity to configurations near the Fermi surface  

NASA Astrophysics Data System (ADS)

The transient-field technique has been used to measure the g(21+) values in 116,118,120Sn, simultaneously, relative to each other and to the well-known g(21+) values in the stable even Pd isotopes. The g factor in 118Sn, which has a small positive value, evidently differs from those in 116Sn and 120 124Sn, which have small negative values. This behavior is investigated through shell model calculations. The experimental g factors are also compared with recent QRPA and RQRPA calculations.

East, M. C.; Stuchbery, A. E.; Wilson, A. N.; Davidson, P. M.; Kibdi, T.; Levon, A. I.

2008-07-01

346

0+ analogue state in118Sb from117Sn(p,n?) reaction  

NASA Astrophysics Data System (ADS)

The analogue of the 0+ ground state in118Sn has been observed in the compound nucleus118Sb through117Sn(p,n ?)117Sb reaction. The neutron decays of this analogue resonance have been studied from the deexciting ?-rays of the residual nucleus117Sb. From off resonance excitation functions, spin assignments have been made to states in117Sb, on the basis of Hauser-Feshbach formalism. The resonance parameters of the isobaric analogue resonance have been determined, including the total, proton and neutron decay widths.

Pal, J.; Dey, C. C.; Bose, S.; Sinha, B. K.; Chatterjee, M. B.; Mahapatra, D. P.

1996-12-01

347

Characterization of the {beta}-phase of the palladium-hydrogen equation of state  

SciTech Connect

The {beta}-phase of the P-C-T curves of the palladium-hydrogen system is encountered at high pressures of gaseous hydrogen and low temperatures of this system. The {beta}-phase is characterized by an increase in the concentration of hydrogen in the palladium lattice with an increase in pressure of the free hydrogen gas surrounding the palladium. The P-C-T curves in this study are determined by gravimetric measurements of the hydrided palladium sample to determine the amount of hydrogen within the palladium lattice. The amount of hydrogen is kept constant within the experimental system and the temperature is varied which changes the pressures. The objective of this experimental thesis is to accurately determine the P-C-T curves of palladium in the {beta}-phase region to pressures of 20,000 psia and medium to low temperature region of {minus}60 C to 100 C.

Fisher, K.J.

1998-07-01

348

Structural variation in palladium nanoparticles of the C-Pd system when dissolving hydrogen in them  

NASA Astrophysics Data System (ADS)

The structure of nanocomposites of the C-Pd system has been studied by X-ray diffraction analysis and transmission electron microscopy. Variations in the lattice period of nanosized palladium, the average amount of hydrogen dissolved in it, and the size distribution of palladium nanoparticles have been analyzed as functions of the nanocomposite fabrication temperature. Based on the structural data, the solubility of hydrogen in nanosized palladium has been estimated.

Efimov, M. N.; Nekrasova, A. A.; Dzidziguri, E. L.; Sidorova, E. N.; Zemtsov, L. M.; Karpacheva, G. P.

2012-07-01

349

Method for recovering palladium and technetium values from nuclear fuel reprocessing waste solutions  

DOEpatents

A method for recovering palladium and technetium values from nuclear fuel reprocessing waste solutions containing these and other values by contacting the waste solution with an extractant of tricaprylmethylammonium nitrate in an inert hydrocarbon diluent which extracts the palladium and technetium values from the waste solution. The palladium and technetium values are recovered from the extractant and from any other coextracted values with a strong nitric acid strip solution.

Horwitz, E. Philip (Elmhurst, IL); Delphin, Walter H. (Woodridge, IL)

1979-07-24

350

Palladium-microencapsulated graphite as the negative electrode in Li-ion cells  

Microsoft Academic Search

A Pd-encapsulated graphite electrode was used as the negative electrode in Li-ion cells. Through dispersion of ultrafine nanoparticles of palladium on the surface of graphite, the interfacial properties of the carbon surface were modified. The presence of the palladium dramatically reduces the initial irreversible capacity of the graphite in propylene carbonate (PC)-based electrolyte. Palladium suppresses the solvated lithium ion intercalation

Ping Yu; Bala S. Haran; James A. Ritter; Ralph E. White; Branko N. Popov

2000-01-01

351

Superparamagnetic nanoparticles-supported phosphine-free palladium catalyst for the Sonogashira coupling reaction  

Microsoft Academic Search

Superparamagnetic nanoparticles were synthesized following a microemulsion method, and functionalized with Schiff-base groups on the surface to form immobilized bidentate ligands. The functionalized nanoparticles were complexed with palladium acetate, affording the immobilized palladium complex catalyst with a palladium loading of 0.24mmol\\/g. The catalyst was characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), vibrating sample

Nam T. S. Phan; Ha V. Le

2011-01-01

352

Pyridine-based dicarbene ligand: synthesis and structure of a bis-2-pyridylidene palladium complex.  

PubMed

We herein report the synthesis of a bis-2-pyridylidene palladium(II) complex as an isoelectronic structure of the well-known 2,2'-bipyridine complexes. One-pot or stepwise C-Cl oxidative addition followed by base-mediated C-H palladation of the chlorobipyridine dication to palladium(0) yielded the bis-2-pyridylidene palladium(II) carbonate smoothly. PMID:23685618

Yoshidomi, Tetsushi; Segawa, Yasutomo; Itami, Kenichiro

2013-05-17

353

Aqueous-Phase Palladium-Catalyzed Coupling. A Green Chemistry Laboratory Experiment  

NASA Astrophysics Data System (ADS)

An upper-level inorganic/organic experiment presents important concepts in modern green chemistry. A water-soluble modified triphenylphosphine ligand is prepared and used to prepare a water-soluble palladium catalyst. The palladium catalyst is formed in situ and used for the aqueous, homogenous, palladium-catalyzed cross-coupling reaction of iodobenzene and diethyl phosphite. The product is diethyl phenylphosphonate.

Featured on the Cover

Harper, Brandy A.; Chance Rainwater, J.; Birdwhistell, Kurt; Knight, D. Andrew

2002-06-01

354

Palladium-catalyzed combustion of methane: Simulated gas turbine combustion at atmospheric pressure  

Microsoft Academic Search

Atmospheric pressure tests were performed in which a palladium catalyst ignites and stabilizes the homogeneous combustion of methane. Palladium exhibited a reversible deactivation at temperatures above 750C, which acted to self-regulate its operating temperature. A properly treated palladium catalyst could be employed to preheat a methane\\/air mixture to temperatures required for ignition of gaseous combustion (ca. 800C) without itself being

Martin Fowles; W. Weisenstein; V. Scherer

1995-01-01

355

Palladium thin film deposition on polyimide by CW Ar + laser radiation for electroless copper plating  

Microsoft Academic Search

Ar+ laser radiation (CW, 488 nm) is used to induce deposition of palladium (Pd) thin films onto polyimide surfaces from palladiumamine {[Pd(NH3)4]2+} solutions. The chemical reaction is carried out by formaldehyde-assisted reduction of palladiumamine complex molecules to metallic Pd, and is localized on the polymer substrate by a focused and scanned Ar+ laser beam. The narrow (614 ?m), homogeneous and

K. Kords; S. Leppvuori; A. Uusimki; Thomas F. George; L. Nnai; R. Vajtai; K. Bali; J. Bksi

2001-01-01

356

Excimer lamp-induced decomposition of palladium metalorganic films for electroless copper plating  

Microsoft Academic Search

Photo-assisted activation of non-catalytic substrates using an excimer lamp for subsequent electroless copper plating is described. The palladium films formed and the ?-methallyl-dibenzoylmethyl-palladium(II) layers used were characterized using ultraviolet spectrophotometry and Fourier transform infrared spectroscopy. The variables which are important to the process are discussed, including the exposure time, UV intensity and chamber pressure. The photo-decomposition of the palladium compounds

Jun-Ying Zhang; Ian W. Boyd; Sylvia Draper

1998-01-01

357

Hydrogen transport through tubular membranes of palladium-coated tantalum and niobium  

Microsoft Academic Search

Palladium-based membranes have been used for decades in hydrogen extraction because of their high permeability and good surface properties and because palladium, like all metals, is 100% selective for hydrogen transport. The authors describe experiments with hydrogen-extraction membranes made of palladium-coated niobium and tantalum heat-exchanger tubers. The cost was about $45\\/ft of 3\\/8 inch tubular membrane, and the fluxes were

Robert E. Buxbaum; Andrew B. Kinney

1996-01-01

358

Separation of Hydrogen Using an Electroless Deposited Thin-Film Palladium-Ceramic Composite Membrane  

SciTech Connect

The primary objective of this project was to prepare and characterize a hydrogen permselective palladium-ceramic composite membrane for high temperature gas separations and catalytic membrane reactors. Electroless plating method was used to deposit a thin palladium film on microporous ceramic substrate. The objective of this paper is to discuss the preparation and characterization of a thin-film palladium-ceramic composite membrane for selective separation of hydrogen at elevated temperatures and pressures. In this paper, we also present a model to describe the hydrogen transport through the palladium-ceramic composite membrane in a cocurrent flow configuration.

Ilias, S.; King, F.G.; Fan, Ting-Fang; Roy, S. [North Carolina Agricultural and Technical State Univ., Greensboro, NC (United States). Dept. of Chemical Engineering

1996-12-31

359

Mechanism of enhanced hydrogen adsorption on palladium-doped nanoporous carbon fibers  

SciTech Connect

Recent work at Oak Ridge National Laboratory was directed towards adsorptive storage of hydrogen in nanoporous carbon fibers in which palladium was incorporated prior to spinning and carbonization/activation of the fibers. Palladium doped carbon fibers exhibited enhanced hydrogen uptake compared to the corresponding palladium-free nanoporous carbon fibers (at room temperature and 2 MPa pressure). However, the mechanism responsible for the enhanced hydrogen uptake is not fully understood. New findings are presented in this paper in support of a mechanism that encompasses both hydrogen spillover on palladium metal sites and hydrogen physisorption on nanostructured carbon sites.

Contescu, Cristian I [ORNL; Gallego, Nidia C [ORNL; Wu, Xianxian [ORNL; Tekinalp, Halil [Clemson University; Edie, Dan [Clemson University; Thies, Mark C [ORNL; Baker, Frederick S [ORNL

2007-01-01

360

Extraction of palladium from acidic solutions with the use of carbon adsorbents  

SciTech Connect

We studied the sorption of palladium(II) on LKAU-4, LKAU-7, and BAU carbon adsorbents from model hydrochloric acid solutions and the solutions of spent palladium-containing catalysts. It was found that sorbents based on charcoal (BAU) and anthracite (LKAU-4) were characterized by high sorption capacities for palladium. The kinetics of the saturation of carbon adsorbents with palladium(II) ions was studied, and it was found that more than 60% of the initial amount of Pd(II) was recovered in a 1-h contact of an adsorbent with a model solution. This value for the solutions of spent catalysts was higher than 35%.

O.N. Kononova; N.G. Goryaeva; N.B. Dostovalova; S.V. Kachin; A.G. Kholmogorov [Krasnoyarsk State University, Krasnoyarsk (Russian Federation)

2007-08-15

361

Cleanup Verification Package for the 118-C-1, 105-C Solid Waste Burial Ground  

SciTech Connect

This cleanup verification package documents completion of remedial action for the 118-C-1, 105-C Solid Waste Burial Ground. This waste site was the primary burial ground for general wastes from the operation of the 105-C Reactor and received process tubes, aluminum fuel spacers, control rods, reactor hardware, spent nuclear fuel and soft wastes.

M. J. Appel and J. M. Capron

2007-07-25

362

Complete genome sequence of Brucella canis strain 118, a strain isolated from canine.  

PubMed

Brucella canis infects several species of animals, and canine is the preferred host. Genome sequences of strains from different hosts are valuable for comparative analysis of host adaptation and microevolution. Here, we report the genome sequence of Brucella canis strain 118, a strain isolated from canine. PMID:23144418

Gao, Guangjun; Li, Jing; Li, Tiefeng; Zhang, Zhengfang; Wang, Liping; Yuan, Xitong; Wang, Yufei; Xu, Jie; Ke, Yuehua; Huang, Liuyu; Wang, Dali; Chen, Zeliang; Xu, Xingran

2012-12-01

363

Phosphorylation of histone H3 Thr 118 converts nucleosomes into a higher-mass complex  

NASA Astrophysics Data System (ADS)

The nucleosome is the fundamental unit of DNA compaction in eukaryotes by which 147 base pairs of DNA wrap 1.7 times around a protein complex called the histone octamer. Numerous chemical modifications are found in vivo that alter octamer surface charge and shape. One such modification is phosphorylation of histone H3 residue Thr 118 located in the dyad region of the nucleosome. We find that phosphorylated H3 T118 (H3 pT118) octamer, when reconstituted with DNA of about 200bp, suppresses nucleosome formation and promotes formation of a higher-mass DNA-protein complex. Coordinately, dephosphorylation of H3 pT118 octamer by phosphatase results in reconstitution of normal nucleosomes. DNAse I foot printing reveals that while DNA contacting the octamer surface in nucleosomes is less accessible than free DNA, the entire DNA strand is equally accessible in the higher-mass complex and is digested at one-third the rate of free DNA.

North, Justin; Poirier, Michael; Ferdinand, Michelle; Ottesen, Jennifer

2009-03-01

364

26 CFR 509.118 - Credit against United States tax for Swiss tax.  

Code of Federal Regulations, 2013 CFR

... REGULATIONS UNDER TAX CONVENTIONS SWITZERLAND General Income Tax § 509.118...within the United States by a resident of Switzerland, such royalty shall be included in...tax when so derived by a resident of Switzerland who is a citizen of the United...

2013-04-01

365

26 CFR 509.118 - Credit against United States tax for Swiss tax.  

Code of Federal Regulations, 2010 CFR

... REGULATIONS UNDER TAX CONVENTIONS SWITZERLAND General Income Tax § 509.118...within the United States by a resident of Switzerland, such royalty shall be included in...tax when so derived by a resident of Switzerland who is a citizen of the United...

2010-04-01

366

42 CFR 483.118 - Residents and applicants determined not to require NF level of services.  

Code of Federal Regulations, 2012 CFR

...applicants determined not to require NF level of services. 483.118 Section 483...applicants determined not to require NF level of services. (a) Applicants who do...determines that a resident requires neither the level of services provided by a NF nor...

2012-10-01

367

42 CFR 84.118 - Half-mask facepieces, full facepieces, and mouthpieces; fit; minimum requirements.  

Code of Federal Regulations, 2012 CFR

...OF RESPIRATORY PROTECTIVE DEVICES Gas Masks § 84.118 Half-mask facepieces...respiratory protective qualities of the gas mask. (c) Half-mask facepieces...facepiece tests in § 84.124. (d) Gas masks with mouthpieces shall be...

2012-10-01

368

42 CFR 84.118 - Half-mask facepieces, full facepieces, and mouthpieces; fit; minimum requirements.  

Code of Federal Regulations, 2010 CFR

...OF RESPIRATORY PROTECTIVE DEVICES Gas Masks § 84.118 Half-mask facepieces...respiratory protective qualities of the gas mask. (c) Half-mask facepieces...facepiece tests in § 84.124. (d) Gas masks with mouthpieces shall be...

2009-10-01

369

42 CFR 84.118 - Half-mask facepieces, full facepieces, and mouthpieces; fit; minimum requirements.  

Code of Federal Regulations, 2011 CFR

...OF RESPIRATORY PROTECTIVE DEVICES Gas Masks § 84.118 Half-mask facepieces...respiratory protective qualities of the gas mask. (c) Half-mask facepieces...facepiece tests in § 84.124. (d) Gas masks with mouthpieces shall be...

2011-10-01

370

42 CFR 84.118 - Half-mask facepieces, full facepieces, and mouthpieces; fit; minimum requirements.  

Code of Federal Regulations, 2010 CFR

...OF RESPIRATORY PROTECTIVE DEVICES Gas Masks § 84.118 Half-mask facepieces...respiratory protective qualities of the gas mask. (c) Half-mask facepieces...facepiece tests in § 84.124. (d) Gas masks with mouthpieces shall be...

2010-10-01

371

12 CFR 225.118 - Computer services for customers of subsidiary banks.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 2013-01-01 false Computer services for customers of subsidiary...Companies Interpretations § 225.118 Computer services for customers of subsidiary...presented that the service company owns a computer which it utilizes to furnish...

2013-01-01

372

41 CFR 102-118.330 - What are the elements of an acceptable prepayment audit program?  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false What are the elements of an acceptable prepayment audit program...Program § 102-118.330 What are the elements of an acceptable prepayment audit program...TSP's invoice number, the billed amount, TIN, standard carrier alpha code, the...

2010-07-01

373

41 CFR 102-118.330 - What are the elements of an acceptable prepayment audit program?  

Code of Federal Regulations, 2010 CFR

... 2009-07-01 false What are the elements of an acceptable prepayment audit program...Program § 102-118.330 What are the elements of an acceptable prepayment audit program...TSP's invoice number, the billed amount, TIN, standard carrier alpha code, the...

2009-07-01

374

CII Honeywell Bull, Level 64 DPS7, COBOL-74 V-55.118.  

National Technical Information Service (NTIS)

This Validation Summary Report (VSR) for the CII Honeywell Bull, COBOL V-55.118 running under the provides a consolidated summary of the results obtained from the validation of the subject compiler against the 1974 COBOL Standard (X3.23-1974/FIPS PUB 21-1...

1982-01-01

375

40 CFR 65.118 - Alternative means of emission limitation: Enclosed-vented process units.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Alternative means of emission limitation: Enclosed-vented...RULE Equipment Leaks § 65.118 Alternative means of emission limitation: Enclosed-vented...equipment leaks are routed to a process or fuel gas system or collected and...

2011-07-01

376

118. JOB NO. 1347M, SHEET 2, 1930/1931, ADDITION FOR PRESSED ...  

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

118. JOB NO. 1347-M, SHEET 2, 1930/1931, ADDITION FOR PRESSED STEEL DEPARTMENT FOR FORD MOTOR COMPANY; FIRST FLOOR PLAN - Ford Motor Company Long Beach Assembly Plant, Assembly Building, 700 Henry Ford Avenue, Long Beach, Los Angeles County, CA

377

Excited 0 exp + States and Electric Monopole Transitions in exp 118 SN.  

National Technical Information Service (NTIS)

Electric monopole transitions of 1758.06(0 sub 1+ - 0 sub(g)sup(+)), 2056.64(0 sub 2+ - 0 sub(g)sup(+)) and 298.58 keV(0 sub 2+ - 0 sub 1+ ) in exp 118 Sn were observed in the internal conversion electron spectra with a pi sqrt 2 iron-free magnetic beta -...

H. Kawakami N. Yoshikawa K. Komura M. Koike H. Yamasa

1981-01-01

378

A Case Series Describing 118 Patients With Lower Limb Necrotizing Fasciitis  

Microsoft Academic Search

Necrotizing fasciitis of the lower limb is not uncommon, with poor outcome. This study reviewed 118 cases (78 males and 40 females) with mean age of 45 + 16.5 years (range 12-95 years) of lower limb necrotizing fasciitis admitted to the Department of Surgery, BHU in India between 1995 and 2007. Most patients (n = 97) presented with fever. Other

A. K. Khanna; Satyendra K. Tiwary; Puneet Kumar; Rahul Khanna; Anuradha Khanna

2009-01-01

379

41 CFR 102-118.430 - What information must be on my agency's transportation bills submitted for a postpayment audit?  

Code of Federal Regulations, 2013 CFR

... What information must be on my agency's transportation bills submitted for a postpayment audit...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Postpayment...

2013-01-01

380

41 CFR 102-118.405 - Are my agency's prepayment audited transportation bills subject to periodic postpayment audit...  

Code of Federal Regulations, 2013 CFR

...false Are my agency's prepayment audited transportation bills subject to periodic postpayment audit...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Prepayment Audits of...

2013-01-01

381

An intravenous (i.v.) route-compatible formulation of FL118, a survivin, Mcl-1, XIAP, and cIAP2 selective inhibitor, improves FL118 antitumor efficacy and therapeutic index (TI)  

PubMed Central

We recently reported a novel anticancer small molecule, designated FL118, which was discovered via high throughput screening (HTS), and followed by hit-lead in vitro and in vivo analysis. FL118 selectively inhibits the expression of four major cancer survival-associated gene products (survivin, Mcl-1, XIAP, and cIAP2) and shows promising antitumor activity in animal models of human cancers when administered using a weekly x 4 schedule (Ling et al., PLOS ONE. 2012, 7: e45571). Here, we compared the antitumor efficacy and therapeutic index (TI) of FL118 in a newly developed Tween 80-free formulation that can be delivered intravenously (i.v.) and intraperitoneally (i.p.) against the previous Tween 80-containing formulation that can only be delivered via an i.p. route. We found that the maximum tolerated dose (MTD) for FL118 in the i.v. formulation increases 3-7 fold in comparison with the MTD of FL118 in the i.p. formulation. FL118 in the i.v. recipe was able to eliminate human tumor xenografts in all three major schedules tested (daily x 5, q2 x 5 and weekly x 5). In contrast, FL118 was able to eliminate human tumor xenografts in the i.p. formulation only with the weekly x 4 schedule previously reported. The TI of FL118 in the i.v. formulation reached 5-6 in the most effective schedule, while the TI of FL118 in the i.p. formulation was only 1.3 - 2. These findings overcome several clinical challenges including FL118 formulation to realize clinically compatible drug administration routes, and expanding effective treatment schedules. The striking improvement of the TI makes FL118 a much safer drug for further development toward clinical trials.

Ling, Xiang; Li, Fengzhi

2013-01-01

382

In situ synthesis of carbon nanotubes decorated with palladium nanoparticles using arc-discharge in solution method  

Microsoft Academic Search

A unique, simple, inexpensive, and one-step synthesis route to produce carbon nanotubes (CNTs) decorated with palladium nanoparticles using a simplified dc arc-discharge in solution is reported. Zero-loss energy filtered transmission electron microscopy and scanning transmission electron microscopy confirm the presence of 3 nm palladium nanoparticles. Such palladium nanoparticles form during the reduction of palladium tetra-chloro-square-planar complex. The deconvoluted x-ray photoelectron

Debasis Bera; Suresh C. Kuiry; Matthew McCutchen; Sudipta Seal; Helge Heinrich; Grady C. Slane

2004-01-01

383

Study on corrosion resistance of palladium films on 316L stainless steel by electroplating and electroless plating  

Microsoft Academic Search

Palladium films with good adhesive strength were deposited on 316L stainless steel by electroless plating and electroplating. Scanning electronic microscopy, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, weight loss tests and electrochemical methods were used to study the properties of the films. The electroless plated palladium film mainly consisted of palladium, phosphorus and nitrogen, and the electroplated palladium film was

Junlei Tang; Yu Zuo

2008-01-01

384

Study of the interaction of palladium bis(acetylacetonate) with boron trifluoride etherate by IR and UV spectroscopy  

SciTech Connect

It has been shown in this work that the reaction of palladium bis(acetylacetonate) with boron trifluoride etherate is accompanied by the stepwise intracoordination exchange of acetylacetonato ligands for fluorine between palladium and boron. The process can proceed in two directions, depending on the initial concentration of the palladium complex and the B:Pd atomic ratio in the reaction medium. Different coordination compounds containing boron and palladium, but differing significantly in solubility in organic solvents are, accordingly, obtained.

Tkach, V.S.; Ratovskii, G.V.; Dmitrieva, T.V.; Malakhova, N.D.; Shmidt, F.K.

1985-10-01

385

Frequency response of IPMC actuator with palladium electrode  

NASA Astrophysics Data System (ADS)

The present study investigates the frequency response of IPMC actuator. By using the electroless plating method, IPMC actuator with palladium electrode was obtained in 60 minutes, which was shorter than the conventional fabrication time. In the observation of response to step voltages, IPMC actuator with palladium electrode showed larger deformation and slower backward motion than the conventional IPMC actuators with platinum electrode. In the experiments of frequency response, IPMC actuator showed the resonance phenomenon at a specified frequency, and the resonance frequency could be predicted by the simple cantilever beam model. Then, the phase shift increased drastically when the resonance phenomena were observed. Finally, the frequency response of IPMC actuator was modeled by using the transfer function.

Kobayashi, T.; Omiya, M.

2011-03-01

386

Laser Stimulation of Deuterated Palladium:. Past and Present  

NASA Astrophysics Data System (ADS)

A method is disclosed to fabricate a palladium cathode that can be electrolyzed in heavy water and stimulated with a laser at a predetermined wavelength to produce apparent excess power; the fabrication method involves cold working, polishing, etching and annealing the palladium prior to electrolytic loading with deuterium. Loading is accomplished with the cathode sitting in a magnetic field of 350 G. After loading the cathode with deuterium, gold is co-deposited electrolytically on the cathode. When a coating of gold is visible on the cathode, co-deposition is halted and the cathode is stimulated with a low-power laser with a maximum power of 30 mW. The thermal response of the cathode is typically 500 mW with maximum output observed of approximately 1 W. The effect is repeatable when protocols are followed and has been demonstrated in several laboratories.

Letts, Dennis; Cravens, Dennis

2005-12-01

387

Complete oxidation of methane on palladium catalysts. Final Report  

SciTech Connect

This is the final report for grant DE-FG02-00ER15026. It summarizes all the accomplishments in these 8 sections: (1) Adaptations on Existing Unit and Construction of New Unit; (2) Turnover Rate and Reaction Orders for the Complete Oxidation of Methane on a Palladium Foil in Excess Dioxygen; (3) Surface area increase on Pd foils after oxidation in excess methane; (4) UV Raman spectroscopic study of hydrogen bonding in gibbsite and bayerite between 93 and 453 K; (5) Coverage of Palladium Catalysts by Oxidized Silicon During Complete Oxidation of Methane; (6) Kinetics of Methane Oxidation under lean conditions over Pd and PdO; (7) An Explanation for the Hysteresis on the Oxidation of Methane; and (8) Structure of Pd(111) after oxidation in O{sub 2}.

Ribeiro, Fabio H.

2003-07-17

388

The catalytic inactivation of cellulase enzyme components by palladium complexes  

SciTech Connect

It has been discovered that sodium hexachloropalladate is a strong inhibitor of cellobiohydrolase I (CBH I) from Trichoderma reesei having an I{sub 50} of <50 {mu}M with p-nitrophenylcellobioside (PNPC) as the substrate. Similar complexes of the metals platinum, osmium, iridium, and rhodium have little effect on CBH I. Other cellulase activities (Avicelase, {beta}-glucanase) are also inhibited by the palladium complex, suggesting that inhibition of two major types of catalytic activity in cellulase are affected. Preliminary data on the kinetics of inhibition of CBH I by sodium hexachloropalladate indicate that the inhibition is reversible and, possibly, uncompetitive. It is anticipated that sodium hexachloropalladate and other palladium complexes will be useful for determining the effect of the binding of catalytically inactivated CBH I and other cellulase components on the structure of cellulose fibers.

Woodward, J.; Gooch, M.G.; Shultz, M.D.

1993-10-01

389

METHOD TO TEST ISOTOPIC SEPARATION EFFICIENCY OF PALLADIUM PACKED COLUMNS  

SciTech Connect

The isotopic effect of palladium has been applied in different ways to separate hydrogen isotopes for many years. At Savannah River Site palladium deposited on kieselguhr (Pd/k) is used in a thermal cycling absorption process (TCAP) to purify tritium for over ten years. The need to design columns for different throughputs and the desire to advance the performance of TCAP created the need to evaluate different column designs and packing materials for their separation efficiency. In this work, columns with variations in length, diameter and metal foam use, were tested using an isotope displacement method. A simple computer model was also developed to calculate the number of theoretical separation stages using the test results. The effects of column diameter, metal foam and gas flow rate were identified.

Heung, L; Gregory Staack, G; James Klein, J; William Jacobs, W

2007-06-27

390

Tests of isotopic separation efficiency of palladium packed columns  

SciTech Connect

The isotopic effect of palladium has been applied in different ways to separate hydrogen isotopes for many years. At Savannah River Site palladium deposited on kieselguhr (Pd/k) is used in a thermal cycling absorption process (TCAP) to purify tritium for over ten years. The need to design columns for different throughputs and the desire to advance the performance of TCAP created the need to evaluate different column designs and packing materials for their separation efficiency. In this work, columns with variations in length, diameter and metal foam presence were tested using an isotope displacement method. A simple computer model was also developed to calculate the number of theoretical separation stages based on the test results. The effects of column diameter, metal foam presence and gas flow rate were identified. (authors)

Heung, L. K.; Staack, G. C.; Klein, J. E.; Jacobs, W. D. [Savannah River National Laboratory, 773-A, Savannah River Site, Aiken, SC 29808 (United States)

2008-07-15

391

Palladium chloride to palladium metal two-dimensional nucleation and growth phenomena  

SciTech Connect

The reduction of a monolayer of surface-bound Pd(II) to Pd(0) on a palladium substrate reveals two-dimensional nucleation and growth phenomena. Using well-known 2D nucleation-growth theories, this reduction is shown to proceed by an instantaneous nucleation and growth mechanism. However, when a submonolayer of Pd(II) is present, this mechanism fails to account for the experimentally observed high cathodic currents seen at zero time. A model incorporating preexisting Pd(0) cylindrical sites on the partially oxidized Pd(0) surface has been successfully applied to account for the discrepancy between the experimental results and current 2D theories. Using this modified 2D model, values for the mathematical product of cylindrical growth rate and the square root of the nucleation site densities have been determined, and the overpotential dependence of the growth rate has been confirmed and quantified. These 2D nucleation-growth phenomena have practical consequences on the performance of the Pd(II)/Pd(0) system as a faradaic supercapacitor, and probably on the performance of other 2D faradaic supercapacitor systems. In addition, because many electrodes undergo monolayer surface oxidation-reduction reactions in other solvent systems, especially aqueous electrolytes, these 2D nucleation-growth phenomena may play a role in these important surface-modifying redox systems as well.

Long, H.C. de; Carlin, R.T. [Air Force Academy, CO (United States). Frank J. Seiler Research Lab.

1995-08-01

392

Palladium(II)-Catalyzed Enantioselective Synthesis of ?-(Trifluoromethyl)arylmethylamines.  

PubMed

Trifluoromethylacetaldimines, generated in situ from the corresponding N,O-acetals, undergo 1,2-addition of arylboroxines under palladium(II) catalysis to generate a variety of ?-(trifluoromethyl)arylmethylamines with good to high enantioselectivity (up to 97% ee). The pyridine-oxazolidine (PyOX) class of ligands was found to be particularly suitable for this transformation, which proceeds without exclusion of ambient air and moisture. PMID:23883415

Johnson, Thomas; Lautens, Mark

2013-07-24

393

Palladiumsilver thin film for hydrogen sensing  

Microsoft Academic Search

In this paper, a palladiumsilver (PdAg) thin film was fabricated and studied for hydrogen gas sensing. A zigzag-shaped microstructure of PdAg was coated on a porous alumina substrate through a combination of microfabrication techniques including photolithography, thin film sputtering and electron beam vacuum evaporation. The atomic ratio of the two metals is controlled at Pd:Ag=3:2. To evaluate the H2 sensitivity

Min Wang; Ying Feng

2007-01-01

394

Palladium nanowires and nanoparticles in mesoporous silica templates  

Microsoft Academic Search

Nanowires and nanoparticles of palladium are synthesized in mesoporous silicas FSM-16 and HMM-1, and their structural characterization and catalytic performances in CO oxidation have been studied. FSM-16 and HMM-1 were impregnated with H2PdCl4, and the thermal treatment under O2 or N2 atmosphere led to high dispersion of H2PdCl4 into the one-dimensional channels of the mesoporous materials (channel diameter ca. 3

Atsushi Fukuoka; Hidenobu Araki; Yuzuru Sakamoto; Shinji Inagaki; Yoshiaki Fukushima; Masaru Ichikawa

2003-01-01

395

Growth of nanoparticles in hydrogen-implanted palladium subsurfaces  

Microsoft Academic Search

Solid particles with nanometric dimensions are shown to grow in the opened subsurface of a polycrystalline palladium (Pd)\\u000a hydrogen-implanted at around 500C. The particles are Pd in main composition and densely grown on sloping walls of fissured\\u000a grain boundaries or cracks. The average grain size increases from deeper to shallow regions, suggesting that a negative temperature\\u000a gradient toward the surface

F. Okuyama

2010-01-01

396

IBM-2 Calculations of Selected Even-Even Palladium Nuclei  

NASA Astrophysics Data System (ADS)

In this study, we have employed the Interacting Boson Model-2 (IBM-2) to determine the most appropriate Hamiltonian for the study of palladium nuclei. Using the best fit values of parameters to construct the Hamiltonian, we have estimated energy levels and multipole mixing ratios (d (E2/M1)) for some doubly-even Pd nuclei. The results are compared with previous experimental and theoretical data and it is observed that they are in good agreement.

nc, lyas; Trkan, Nurettn

2006-11-01

397

Sputtered, electroless, and rolled palladiumceramic membranes  

Microsoft Academic Search

Three techniques were used to produce palladiumceramic (Pdceramic) composite membranes for hydrogen separation and production. They are sputtering, electroless deposition and rolling of thin Pd alloy films over ceramic porous tubes.After studying and developing the three coating techniques, an extensive testing and characterizing work was carried out on these thin film composite membranes. The results show that in the sputtered

S Tosti; L Bettinali; S Castelli; F Sarto; S Scaglione; V Violante

2002-01-01

398

Corrosion protection of titanium by pulsed plasma deposition of palladium  

Microsoft Academic Search

The potential of pulsed ion deposition of palladium, using several coating conditions, for the corrosion protection of titanium foil in 0.1 M H2SO4, 0.1 M HNO3 and a mixture of equal volumes of the two acids at 80C has been investigated by weight loss measurements, scanning electron microscopy and Rutherford backscattering spectroscopy. The environments were selected to evaluate the possible

S. D. Barson; P. Skeldon; G. E. Thompson; J. Piekoszewski; A. G. Chmielewski; Z. Werner; R. Grtzschel; E. Wieser

2000-01-01

399

Palladium- (and nickel-) catalyzed vinylation of aryl halides  

PubMed Central

Functionalized styrenes are extremely useful building blocks for organic synthesis and for functional polymers. One of the most general syntheses of styrenes involves the combination of an aryl halide with a vinyl organometallic reagent under catalysis by palladium or nickel complexes. This Feature Article provides the first comprehensive summary of the vinylation methods currently available along with a critical comparison of the efficiency, cost and scope of the methods.

Denmark, Scott E.; Butler, Christopher R.

2009-01-01

400

Biaryl Phosphine Ligands in Palladium-Catalyzed Amination  

PubMed Central

Palladium-catalyzed amination of aryl halides has undergone rapid development in the last 12 years. This has been largely driven by implementation of new classes of ligands. Biaryl phosphines have proven to provide especially active catalysts in this context. This review discusses the applications that these catalysts have found in C-N cross-coupling in heterocycle synthesis, pharmaceuticals, materials science and natural product synthesis.

Surry, David S.

2012-01-01

401

Synthesis and Characterization of palladium crystallites intercalated in montmorillonite  

SciTech Connect

Reduction of electrophilic Pd(II) complexes intercalated in montmorillonite under mild conditions (0[degrees]C in MeOH) has been shown to afford highly despersed metallic palladium, located mainly in the interlamellar regions of the clay. Transmission electron microscopy reveals an unusual platelet morphology for the interlammellar metal particles, suggesting that the clay structure may impose a kinetic constraint on the attainment of a thermodynamically more favorable spherical morphology. 15 refs., 3 figs., 2 tabs.

Crocker, M.; Buglass, J.G.; Herold, R.H.M. (Koninklijke/Shell-Lab., Amsterdam (Netherlands))

1993-01-01

402

Unravelling the labyrinth of palladium-catalysed reactions involving isocyanides.  

PubMed

Isocyanides possess a rich history in the world of synthetic chemistry. Recently the scope of this already versatile class of reagent has been expanded into its use in palladium-catalysed cascade sequences. The scope of this type of reaction is explored in depth and this tutorial review focuses on its various applications in chemical synthesis, and the wide range of systems that can be efficiently prepared using this strategy are documented. PMID:23443313

Lang, Stuart

2013-06-21

403

Corrosion and biocompatibility testing of palladium alloy castings  

Microsoft Academic Search

Objectives: The biocompatibility of palladiumcopper alloys has been questioned in the literature. The intention of the present work was to study: (a) the release of ions in an immersion test from a copper-containing alloy, Option (79% Pd, 10% Cu, 9% Ga, 2% Au), compared with an alloy without Cu, IS85 (82% Pd, 6% Ga, 3.5% Sn, 3.5% In, 2.5% Ag,

M Syverud; J. E Dahl; H Her; E Morisbak

2001-01-01

404

The catalytic inactivation of cellulase enzyme components by palladium complexes  

Microsoft Academic Search

It has been discovered that sodium hexachloropalladate is a strong inhibitor of cellobiohydrolase I (CBH I) from Trichoderma reesei having an I of <50 μM with p-nitrophenylcellobioside (PNPC) as the substrate. Similar complexes of the metals platinum, osmium, iridium, and rhodium have little effect on CBH I. Other cellulase activities (Avicelase, β-glucanase) are also inhibited by the palladium complex, suggesting

J. Woodward; M. G. Gooch; M. D. Shultz

1993-01-01

405

?-Type Glycosidic Bond Formation by Palladium-Catalyzed Decarboxylative Allylation.  

PubMed

Decarboxylative allylation of glycals: A ?-type glycosidic bond has been constructed in high regio- and stereoselectivity by means of a palladium-catalyzed decarboxylative O-glycosylation. Various kinds of glycals with different protecting groups have been examined for this reaction to afford a diverse set of glycosylated products, including phenolic O-glycosides, thiophenolic S-glycoside, aliphatic O-glycosides, and disaccharides with excellent ?-selectivity and reasonable to excellent yields. PMID:24108596

Xiang, Shaohua; Lu, Zhiqiang; He, Jingxi; Le Maihoang, Kim; Zeng, Jing; Liu, Xue-Wei

2013-09-17

406

The functionalized poly(ethylene glycol) supported palladium nanoparticles as a highly efficient catalyst for aerobic oxidation of alcohols  

Microsoft Academic Search

The aerobic oxidation of various alcohols was studied with the stabilizing palladium nanoparticles as the catalyst under very mild conditions in poly(ethylene glycol) (PEG) media. The bidentate nitrogen ligand functionalized-PEG played an important role in stabilizing and immobilizing palladium nanoparticles. The stabilizing palladium nanoparticles were found to be highly active for the oxidation of benzyl alcohol. Finally, the scope and

Bo Feng; Li Hua; Zhenshan Hou; Hanmin Yang; Yu Hu; Huan Li; Xiuge Zhao

2009-01-01

407

The use of ion exchange resins in the recycle of palladium catalysts for the synthesis of polyketones  

Microsoft Academic Search

In the present work, three methods were employed to find ways of recycling palladium catalysts. Ion exchange resins were used as carriers to prepare resin-supported palladium catalysts and the reusability of this catalyst in the preparation of polyketone by copolymerization of carbon monoxide and styrene was investigated. Additionally, the feasibility of recycling the expensive palladium catalysts was examined by two

Jintang Guo; Bing Liu; Xinying Wang; Jingwu Sun

2004-01-01

408

Surface Segregation in a Polycrystalline Palladium-Copper Alloy  

SciTech Connect

The surface composition of an alloy is rarely the same as its bulk. The differences are reflected in a number of important surface properties, including corrosion rates and catalytic activity. This work addresses the phenomenon of surface segregation in a polycrystalline palladium-copper alloy. Palladium-copper is of significant practical interest because of its potential as a hydrogen separation membrane for corrosive environments, like those found in coal gasification process streams. We combine X-ray Photoelectron Spectroscopy (XPS) and Low Energy Ion Scattering (LEIS) techniques to understand how the compositions of the surface region (SR, ~ top 3-4 atomic layers) and top layer (TL) of a bulk 70:30 (atomic) Pd:Cu alloy vary with thermal treatment and adsorption of hydrogen sulfide. On the clean surface, copper enrichment, both in the SR relative to the bulk and in the TL relative to the SR, occurs at all temperatures above 600K. Adsorption of sulfur as hydrogen sulfide results in a palladium-only TL, illustrating how the presence of an adatom can significantly affect segregation patterns. We consider our results from the perspective of thermodynamic theory, and demonstrate that consideration of the heat of mixing is important for a complete description of this system.

Miller, J.B.; Ye, P.; Matranga, C.; Gellman, A.J.

2006-11-01

409

In situ generation of palladium nanoparticles in smectite clays  

SciTech Connect

A novel synthetic route has been developed for the preparation of clay intercalated palladium catalysts. Liquid sorption and X-ray diffraction measurements on ethanol(1)-toluene(2)/hexadecylammonium montmorillonite dispersions indicated that a toluene-rich bulk liquid phase was equilibrated with a swollen, ethanol-rich interlamellar phase having a volume of about 0.9 cm{sup 3}/g organoclay. Introduction of palladium(II) acetate into the organoclay suspension led to the generation and deposition of a metallic palladium dispersion in the interlamellar space. This system behaved as a versatile nanophase reactor, wherein the ethanol functioned as both solvent and reducing agent. The progress of the Pd{sup 2+} {r_arrow} Pd{sup 0} reaction was monitored spectrophotometrically. The ethanolic reduction afforded Pd particles 2 to 14 nm in diameter, depending on the experimental conditions, deposited on clay particle defect sites. Organoclays loaded up to 10 mass % Pd were synthesized and characterized by BET surface area analysis, transmission electron microscopy, low-shear rheology, X-ray diffraction, and small-angle X-ray scattering measurements. The Pd-organoclay samples proved to be catalytically active in olefin hydrogenation in the liquid phase. 30 refs., 8 figs., 1 tab.

Kiraly, Z.; Dekany, I.; Mastalir, A. [Attila Jozsef Univ., Szeged (Hungary)] [and others

1996-06-01

410

Palladium-mediated arylation of 3-aminopiperidines and 3-aminopyrrolidines.  

PubMed

This paper describes the palladium-catalyzed arylation of 1-substituted 3-aminopyrrolidines or piperidines. Palladium(0) (1-2 mol %) in conjunction with "Buchwald's ligand" [2-(dimethylamino)-2'-(dicyclohexylphosphine)biphenyl] was shown to be the catalyst of choice for the coupling with aryl bromides or chlorides. When bromobenzene was used, a strong temperature effect was noticed. Whereas no reaction occurred at 100 degrees C, yields higher than 85% were obtained at 130 degrees C for each substrate. Such an effect was not observed when diphosphines were used. Whereas Xantphos and, to a lesser extent BINAP, were moderately efficient in the coupling of all diamines, the palladium-mediated arylation in the presence of monophosphines was strongly dependent on the substrate. The results suggest the participation of both nitrogens of the aminoheterocycle in the reactive intermediate. This participation could also account for the highly selective arylation of the endocyclic nitrogen of unsubstituted 3-aminopyrrolidine or piperidine. Optimal conditions were found for the arylation using 2- or 4-substituted electron-poor or enriched aryl halides. PMID:15575771

Jean, Ludovic; Rouden, Jacques; Maddaluno, Jacques; Lasne, Marie-Claire

2004-12-10

411

Stereoselective palladium-catalyzed O-glycosylation using glycals.  

PubMed

A highly stereoselective palladium-catalyzed O-glycosylation reaction is described. The reaction of a glycal 3-acetate or carbonate with the zinc(II) alkoxide of acceptors establishes the glycosidic linkage under palladium catalysis to give rise to disaccharides as the product in good yields and with high stereoselectivity. In contrast to the Lewis acid mediated Ferrier procedure, the anomeric stereochemistry of this reaction is controlled by the employed ligand. Whereas the use of a complex of palladium acetate and 2-di(tert-butyl)phosphinobiphenyl as the catalyst results in the exclusive beta-glycoside formation, the same reaction using trimethyl phosphite ligand furnishes an alpha-anomer as the major product. The utility of the 2,3-unsaturation present in the resulting glycoside is demonstrated by the further transformations such as dihydroxylation, hydration, and hydrogenation reactions. Thus, the combination of the glycosylation and subsequent functionalization provides a novel entry to saccharides which are otherwise difficult to prepare. The broad scope of the process, mildness of the reaction conditions, and experimental simplicity should make this method a useful tool in synthetic carbohydrate chemistry. PMID:14759180

Kim, Hahn; Men, Hongbin; Lee, Chulbom

2004-02-11

412

Methane ignition catalyzed by in situ generated palladium nanoparticles  

SciTech Connect

Catalytic ignition of methane over the surfaces of freely-suspended and in situ generated palladium nanoparticles was investigated experimentally and numerically. The experiments were conducted in a laminar flow reactor. The palladium precursor was a compound (Pd(THD){sub 2}, THD: 2,2,6,6-tetramethyl-3,5-heptanedione) dissolved in toluene and injected into the flow reactor as a fine aerosol, along with a methane-oxygen-nitrogen mixture. For experimental conditions chosen in this study, non-catalytic, homogeneous ignition was observed at a furnace temperature of {proportional_to}1123 K, whereas ignition of the same mixture with the precursor was found to be {proportional_to}973 K. In situ production of Pd/PdO nanoparticles was confirmed by scanning mobility, transmission electron microscopy and X-ray photoelectron spectroscopy analyses of particles collected at the reactor exit. The catalyst particle size distribution was log-normal. Depending on the precursor loading, the median diameter ranged from 10 to 30 nm. The mechanism behind catalytic ignition was examined using a combined gas-phase and gas-surface reaction model. Simulation results match the experiments closely and suggest that palladium nanocatalyst significantly shortens the ignition delay times of methane-air mixtures over a wide range of conditions. (author)

Shimizu, T.; Abid, A.D.; Poskrebyshev, G.; Wang, H. [Department of Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089 (United States); Nabity, J.; Engel, J.; Yu, J. [TDA Research, Inc., 12345 W. 52nd Ave, Wheat Ridge, CO 80033 (United States); Wickham, D. [Reaction Systems, LLC, 19039 E. Plaza Drive, Suite 290, Parker, CO 80134 (United States); Van Devener, B.; Anderson, S.L. [Department of Chemistry, University of Utah, Salt Lake City, UT 84112 (United States); Williams, S. [Air Force Research Laboratory, Mail Stop RZA, 1950 Fifth Street, WPAFB, OH 45433 (United States)

2010-03-15

413

Near-edge x-ray-absorption fine-structure spectroscopy measurement of the p-symmetry unoccupied states of silver, palladium, and palladium silicide  

NASA Astrophysics Data System (ADS)

The density of unoccupied p states of silver, palladium, and palladium silicide has been measured for the first time with high resolution by x-ray absorption at the MIV,V edges. Our results show that the MIV,V-edge spectra yield information for 4d metals similar to that provided by K and LI edge measurement on 3d metals. The densities of states are in agreement with theoretical predictions both in regard to energy and relative intensity. Changes in the palladium MIV,V spectra on silicide formation give the first direct evidence of the role of Pd 5p states in compound formation.

Paolucci, G.; Prince, K. C.; Comelli, G.; Santoni, A.; Bisi, O.

1990-02-01

414

41 CFR 102-118.250 - Who is accountable for the issuance and use of GBL and GTR forms?  

Code of Federal Regulations, 2010 CFR

41 Public Contracts and Property Management 3 2011-01-01 2011-01-01 false Who is accountable for the issuance and use of GBL and GTR forms? 102-118.250 Section 102-118.250 Public Contracts and Property Management Federal Property Management Regulations System (Continued)...

2011-01-01

415

41 CFR 102-118.245 - How does my agency get an assigned set of GBL or GTR numbers?  

Code of Federal Regulations, 2010 CFR

41 Public Contracts and Property Management 3 2011-01-01 2011-01-01 false How does my agency get an assigned set of GBL or GTR numbers? 102-118.245 Section 102-118.245 Public Contracts and Property Management Federal Property Management Regulations System (Continued) ...

2011-01-01

416

Genetic basis for expression of the major globotetraose-containing lipopolysaccharide from H. influenzae strain Rd (RM118)  

Microsoft Academic Search

A genetic basis for the biosynthetic assembly of the globotetraose containing lipopolysaccharide (LPS) of Haemo- philus influenzae strain RM118 (Rd) was determined by structural analysis of LPS derived from mutant strains. We have previously shown that the parent strain RM118 elaborates

Derek W. Hood; Andrew D. Cox; Warren W. Wakarchuk; Melissa Schur; Elke K. H. Schweda; Shannon L. Walsh; Mary E. Deadman; Adele Martin; E. Richard Moxon; James C. Richards

2001-01-01

417

New Palladium-Catalyzed Approaches to Heterocycles and Carbocycles  

SciTech Connect

The tert-butylimines of o-(1-alkynyl)benzaldehydes and analogous pyridinecarbaldehydes have been cyclized under very mild reaction conditions in the presence of I{sub 2}, ICl, PhSeCl, PhSCl and p-O{sub 2}NC{sub 6}H{sub 4}SCl to give the corresponding halogen-, selenium- and sulfur-containing disubstituted isoquinolines and naphthyridines, respectively. Monosubstituted isoquinolines and naphthyridines have been synthesized by the metal-catalyzed ring closure of these same iminoalkynes. This methodology accommodates a variety of iminoalkynes and affords the anticipated heterocycles in moderate to excellent yields. The Pd(II)-catalyzed cyclization of 2-(1-alkynyl)arylaldimines in the presence of various alkenes provides an efficient way to synthesize a variety of 4-(1-alkenyl)-3-arylisoquinolines in moderate to excellent yields. The introduction of an ortho-methoxy group on the arylaldimine promotes the Pd-catalyzed cyclization and stabilizes the resulting Pd(II) intermediate, improving the yields of the isoquinoline products. Highly substituted naphthalenes have been synthesized by the palladium-catalyzed annulation of a variety of internal alkynes, in which two new carbon-carbon bonds are formed in a single step under relatively mild reaction conditions. This method has also been used to synthesize carbazoles, although a higher reaction temperature is necessary. The process involves arylpalladation of the alkyne, followed by intramolecular Heck olefination and double bond isomerization. This method accommodates a variety of functional groups and affords the anticipated highly substituted naphthalenes and carbazoles in good to excellent yields. Novel palladium migratiodarylation methodology for the synthesis of complex fused polycycles has been developed, in which one or more sequential Pd-catalyzed intramolecular migration processes involving C-H activation are employed. The chemistry works best with electron-rich aromatics, which is in agreement with the idea that these palladium-catalyzed C-H activation reactions parallel electrophilic aromatic substitution. A relatively efficient synthesis of cyclopropanes has been developed using palladium-catalyzed C-H activation chemistry, in which two new carbon-carbon bonds are formed in a single step. This method involves the palladium-catalyzed activation of relatively unreactive C-H bonds, and provides a very efficient way to synthesize cyclopropapyrrolo[1,2-a]indoles, analogues of the mitomycin antibiotics.

Qinhua Huang

2004-12-19

418

Study of a palladium coated Bragg grating sensor to detect and measure low hydrogen concentrations  

Microsoft Academic Search

In this work we present a sensor based in a Bragg grating coated by a small amount of palladium. We explain the process of fabrication in detail, from the etching of the fiber to the deposition of the palladium. In this sensor the amount of hydrogen absorbed by the Pd is hydrogen concentration dependant and causes a stress that alters

M. Aleixandrea; P. Correderab; M. L. Hernanzb; I. Sayagoa; M. C. Horrillo; J. Gutierrez-Monreal

2007-01-01

419

Synthesis and reactivity of alkyl-palladium N-heterocyclic carbene complexes.  

PubMed

The transamination of alkyl-palladium halide N-heterocyclic carbene complexes has enabled the isolation of products that reveal interesting insights into the factors which might be barriers to the development of a palladium-catalysed alkyl-amination reaction. PMID:17347724

Esposito, Oriana; Lewis, Alexandra K de K; Hitchcock, Peter B; Caddick, Stephen; Cloke, F Geoffrey N

2007-02-14

420

Synthesis and spectroscopic characterization of palladium nanoparticles by using broth of edible mushroom extract  

Microsoft Academic Search

Reliable and eco-friendly process for the synthesis of metallic nanoparticles is an important step in the field of Nanoscience and Technology. In the present study we fabricate the palladium nanoparticles by using mushroom extract as a reducing and capping agent. It was observed that the synthesis procedure was quite simple and in a single step benign palladium nanoparticles were formed.

K. Mallikarjuns; N. John Sushma; G. Narasimha; K. Venkateswara Rao; L. Manoj; B. Deva Prasad Raju

2011-01-01

421

Preparation of palladium membrane over porous stainless steel tube modified with zirconium oxide  

Microsoft Academic Search

A palladium membrane has been prepared by electroless plating on the surface of a porous stainless steel tube. Since the large surface pores of the tube are obstacle for preparation of a defect-free palladium film on the surface, zirconium oxide particles were deposited inside the pores. The mean thickness of the resulting Pd membrane on the modified tube was ca.

Dan Wang; Jianhua Tong; Hengyong Xu; Yasuyuki Matsumura

2004-01-01

422

Water as an Activator for Palladium(II)-Catalyzed Olefin Polymerization.  

PubMed

By a reasonable combination of the Wacker reaction and olefin polymerization processes, water proves to be an excellent activator for the palladium(II)-catalyzed polymerization of ethylene and it provides a safe, environmental-friendly and handy initiator for olefin polymerization. The activity of the olefin polymerization is comparable to reactions catalyzed by the corresponding alkylated cationic palladium complexes. PMID:24038439

Tao, Wen-Jie; Li, Jun-Fang; Peng, Ai-Qing; Sun, Xiu-Li; Yang, Xiao-Hong; Tang, Yong

2013-09-03

423

Palladium-Catalyzed Intramolecular Carbopalladation/Cyclization Cascade: Access to Polycyclic N-Fused Heterocycles  

PubMed Central

An efficient palladium-catalyzed intramolecular carbopalladation/cyclization cascade toward tetra- and pentacyclic N-fused heterocycles has been developed. This transformation proceeds via the palladium-catalyzed coupling of aryl halides with internal propargylic esters or ethers followed by the 5-endo-dig cyclization leading to polycyclic pyrroloheterocycles in moderate to excellent yields.

Chernyak, Dmitri

2011-01-01

424

Particle size and metal-support interaction effects in pumice supported palladium catalysts  

Microsoft Academic Search

Pumice supported palladium catalysts with different metal loading and different metal particle sizes have been analyzed with X-ray photoelectron spectroscopy (XPS). The observed negative shift of the Pd 3d doublet binding energies of all the catalysts with respect to the corresponding binding energies of palladium metal powder suggested an increased electron density at the metal centers. Through the combination of

A. M. Venezia; A. Rossi; D. Duca; A. Martorana; G. Deganello

1995-01-01

425

Cyclopropanation of allenes with diazomethane in the presence of palladium(II) compounds  

SciTech Connect

The authors studied the reactions of several allenes having various degrees of substitution with diazomethane in the presence of palladium(II) compounds. The reaction of substituted allenes with diazomethane in the presence of palladium(II) compounds takes place at the less substituted double bond with the formation of the corresponding methylenecyclopropanes.

Zefirov, N.S.; Lukin, K.A.; Timofeeva, A.Yu.

1988-05-10

426

Catalytic cross-coupling reactions mediated by palladium\\/nucleophilic carbene systems  

Microsoft Academic Search

In this mini-review, we present a summary of our recent work in the field of palladium-catalyzed cross-coupling reactions, with emphasis on the use of nucleophilic N-heterocyclic carbenes (NHC) as ancillary ligand. The palladium-mediated coupling reactions investigated include the SuzukiMiyaura, KumadaTamaoCorriu, Heck, Sonogashira, Stille, Hiyama and aryl amination reactions.

Anna C Hillier; Gabriela A Grasa; Mihai S Viciu; Hon Man Lee; Chuluo Yang; Steven P Nolan

2002-01-01

427

Characterization of carbon supported palladium catalysts: inference of electronic and particle size effects using reaction probes  

Microsoft Academic Search

Carbon supported palladium catalysts have been used in a wide range of industrial reactions, especially hydrogenation in the fine chemical industry. However, there are a lot of difficulties to characterize this system, mainly due to intrinsic characteristics of the carbon materials. This work aimed to evaluate the effect of dispersion and electronic density of palladium on the catalytic performance of

Andr L. Dantas Ramos; Pricles da Silva Alves; Donato A. G. Aranda; Martin Schmal

2004-01-01

428

Synthesis of functionalized dioxa-aza[7]helicenes using palladium catalyzed arylations.  

PubMed

Despite the recent reports on transition-metal catalyzed cycloisomerization strategies toward helicenes, the amount of palladium catalyzed routes remains rather scarce. Within this letter the successful preparation and characterization of novel dioxa-aza[7]helicenes using palladium mediated coupling reactions is presented. PMID:22360768

Kelgtermans, Hans; Dobrza?ska, Liliana; Van Meervelt, Luc; Dehaen, Wim

2012-02-24

429

Palladium deuteride formation in the cathode of an electrochemical cell: An in situ neutron diffraction study  

SciTech Connect

In this report, neutron diffraction of palladium cathodes is utilized to reveal palladium deuteride formation within the crystal structure of the metal. The experiment described in this report demonstrates the efficacy of neutron powder diffraction as a tool for structural studies of metal deuterides/hydrides and the feasibility of in situ diffraction measurements from a working electrochemical cell. (JL)

Rotella, F.J.; Richardson, J.W. Jr.; Redey, L.; Felcher, G.P.; Hitterman, R.L.; Kleb, R.

1991-01-01

430

Palladium deuteride formation in the cathode of an electrochemical cell: An in situ neutron diffraction study  

SciTech Connect

In this report, neutron diffraction of palladium cathodes is utilized to reveal palladium deuteride formation within the crystal structure of the metal. The experiment described in this report demonstrates the efficacy of neutron powder diffraction as a tool for structural studies of metal deuterides/hydrides and the feasibility of in situ diffraction measurements from a working electrochemical cell. (JL)

Rotella, F.J.; Richardson, J.W. Jr.; Redey, L.; Felcher, G.P.; Hitterman, R.L.; Kleb, R.

1991-12-31

431

A facile route for preparing a mesoporous palladium coordination polymer as a recyclable heterogeneous catalyst.  

PubMed

To overcome the separation difficulty of the palladium-based homogeneous catalyst, the palladium complex can be anchored on various supports such as silica, polymers and nanoparticles. For the same purpose, we describe a general and facile method to immobilize palladium bis(phosphine) complexes on the basis of the technique widely used for metal-organic framework (MOF) synthesis, yielding a mesoporous coordination polymer palladium-CP1. Although palladium complexes are generally not stable enough to allow further manipulation, we succeeded in preparation of a palladium coordination polymer without by-product Pd clusters or nanoparticles. The fresh palladium-CP1 catalyst exhibits a yield close to 55% for tolane at room temperature and 24 h in Sonogashira coupling of iodobenzene and phenylacetylene, as compared with a yield of 89% for its homogeneous counterpart [Pd(PPh(3))(2)Cl(2)]. Furthermore, this catalyst is stable enough to be reused more than four times with no Pd and Zn leaching. Therefore this new immobilization method offers great promise for the produce of recyclable palladium heterogeneous catalysts with higher activity and higher thermal and chemical stability in the future. PMID:22382505

Zhang, Siyong; Liu, Qinghua; Shen, Ming; Hu, Bingwen; Chen, Qun; Li, Hexing; Amoureux, Jean-Paul

2012-03-01

432

ALLERGIC RESPONSE TO PLATINUM AND PALLADIUM COMPLEXES DETERMINATION OF NO-EFFECT LEVEL  

EPA Science Inventory

Rabbits, guinea pigs and mice were subcutaneously injected with PtSO4 (with and without NH4Cl) and PdSO4 (with and without NH4Cl) in an attempt to sensitize the animals to platinum or palladium. No allergic induction was found. No allergic induction to platinum or palladium was f...

433

Nanoaggregates of a pentacenequinone derivative as reactors for the preparation of palladium nanoparticles.  

PubMed

Fluorescent nanoaggregates of pentacenequinone derivative serve as reactors for the preparation of palladium nanoparticles in aqueous medium. Further, the combination of catalytic quantities of palladium nanoparticles with NaBH(4) smoothly reduces 4-nitrophenol to 4-aminophenol in aqueous medium. PMID:23042509

Bhalla, Vandana; Gupta, Ankush; Kumar, Manoj

2012-12-18

434

High temperature performance study of gold wire bonding on a palladium bonding pad  

Microsoft Academic Search

Translating technology from aluminum based to copper based semiconductor has unique issues especially in wire bonding reliability. Copper is very easy to be oxidized when exposed to the air. Palladium was added to cover copper in order to resolve this problem. Finally, the gold wire is bonded with palladium instead of copper. The performance (mechanical and strength) of this interconnection

Wardhana Aji Sasangka; A. C. Tan

2006-01-01

435

VUV light-induced decomposition of palladium acetate films for electroless copper plating  

Microsoft Academic Search

VUV light-induced decomposition of palladium acetate films has been performed using a novel excimer lamp source of 126 nm radiation. Such exposure results in the formation of palladium, which acts as an activator for copper plating by means of an electroless bath. Selective copper patterns can thus be formed. The change in the optical transmission of the films formed on

Jun-Ying Zhang; Simon L King; Ian W Boyd; Qi Fang

1997-01-01

436

Inkjet printing of palladium catalyst patterns on polyimide film for electroless copper plating  

Microsoft Academic Search

A convenient method has been developed that provides for applying patterned copper tracks on flexible polyimide film for electronic applications. The workflow comprises inkjet printing of an aqueous palladium(II) solution onto surface treated polyimide film, followed by reduction to metallic palladium and electroless copper plating. All processing steps involved require minimal infrastructure and result in metallic feature dimensions down to

Stephan Busato; Alberto Belloli; Paolo Ermanni

2007-01-01

437

Development of a composite palladium membrane for selective hydrogen separation at high temperature  

Microsoft Academic Search

In this paper a method is described for development of a composite palladium membrane for selective hydrogen separation at high temperature. Electroless plating is used to form a thin palladium film on a silver porous substrate. The composite formed showed excellent mechanical strength and very large selectivity for hydrogen. The studies performed so far suggest that electroless plating can be

Rakesh Govind; Devendra Atnoor

1991-01-01

438

Projected shell model study of yrast bands in even-even 100-118Pd isotopes  

NASA Astrophysics Data System (ADS)

The projected shell model (PSM) study of 100-118Pd nuclei is carried out. The reliability of the ground-state wave functions is checked by reproducing yrast spectra and electromagnetic properties. The results of calculations indicate that the observed deformation systematics in 100-118Pd isotopes depends on the increase of occupation probability of (1 h 11/2 ? ) orbit and the deformation producing tendency of n-p interaction operating between Spin Orbit Partner (SOP) orbits ( d 5/2)?-( d 3/2) ? and ( g 9/2)?-( g 7/2) ? . Beside this, the results on band diagrams show that the yrast spectra in Pd isotopes do not arise from a single intrinsic state only but also from multi-quasiparticle states.

Bhat, A.; Bharti, A.; Khosa, S. K.

2012-03-01

439

Selecting cold 2n transfer in 162Dy(116Sn,118Sn)160Dy  

NASA Astrophysics Data System (ADS)

Cold 2n transfer has been studied using the reaction 162Dy(116Sn,118Sn)160Dy at energies in the vicinity of the Coulomb barrier. The experiment was performed at the Heidelberg-Darmstadt Crystal Ball spectrometer which was extended by 6 Compton suppressed Ge-detectors. It is demonstrated, that the direct population of intrinsically cold states in the deformed 160Dy transfer product can be selected by identifying and suppressing excitations to states above the yrast line using the Crystal Ball. The probability for populating yrast states in the deformed 160Dy nuclei in a 2n transfer reaction increases from 7% at grazing collisions up to ? 50% at large impact parameters, while the probability for populating the ground state in the spherical 2n transfer product 118Sn stays about constant at ? 45% for all measured impact parameters.

Hrtlein, T.; Bauer, H.; Pansegrau, D.; Schwalm, D.

1999-01-01

440

Response to ``Comment on `The cohesive energetics of cesium chloride [J. Chem. Phys. 118, 2308 (2003)]' ''  

NASA Astrophysics Data System (ADS)

The comment by A. Aguado on the article J. Chem. Phys. 118, 2308 (2003) presents new computations with the ab initio perturbed ion (AIPI) method and concludes that this approach provides more insight into ionic crystal cohesion than using the relativistic integrals program. However, uncertainties in the AIPI energies prevent variational arguments from determining the relative merits of the two methods. There is therefore no evidence either from the original article or elsewhere to justify the claims in the comment.

Pyper, N. C.

2003-10-01

441

Room temperature 0.1 ?m CMOS technology with 11.8 ps gate delay  

Microsoft Academic Search

We report a room temperature, 0.1 ?m CMOS technology on bulk Si substrates that delivers a record ring-oscillator gate delay of 11.8 psec at 2.5 V. Frequency dividers at 2.0 V operate with input frequencies exceeding 8.5 GHz. Feature sizes obey g-line lithography design rules except at the gate level. The high speed CMOS performance and the good subthreshold and

K. F. Lee; R. H. Yan; D. Y. Jeon; G. M. Chin; Y. O. Kim; D. M. Tennant; B. Razavi; H. D. Lin; Y. G. Wey; E. H. Westerwick; M. D. Morris; R. W. Johnson; T. M. Liu; M. Tarsia; M. Cerullo; R. G. Swartz; A. Ourmazd

1993-01-01

442

Cu clusters evolvement in Fe1.18% Cu binary alloy  

Microsoft Academic Search

Microstructure evolution of Fe-1.18%Cu binary alloy during solution and aging at 550?C was investigated under a high-resolution\\u000a electron microscopy (HREM). In addition, the aging strengthening mechanism was investigated based on the precipitation strengthening\\u000a theory. Results show that there were lots of Cu atom clusters in the ferrite matrix during solid solution and initial aging\\u000a stage, and Cu-rich metastable Fe-Cu particles

Huiping Ren; Haiyan Wang; Zongchang Liu

2007-01-01

443

VLTI/AMBER unveils a possible dusty pinwheel nebula in WR118  

NASA Astrophysics Data System (ADS)

Context: Most Wolf-Rayet stars (WR) of the WC9 subtype exhibit a dusty circumstellar envelope, but it is still a matter of debate how dust can form in their harsh environment. In a few cases, a pinwheel-like structure of the dusty envelope has been detected; therefore, it has been suggested that dust formation in all dusty WR stars might be linked to colliding winds in a binary system. Aims: We probed the innermost region of the circumstellar dust shell of the deeply embedded WR star WR 118. Methods: We carried out spectro-interferometric observations using the AMBER instrument of ESO's Very Large Telescope Interferometer in low-spectral resolution mode (R=35). The K-band observations were obtained with three 1.8 m telescopes spanning projected baselines between 9.2 and 40.1 m. Results: At high spatial frequencies, the AMBER visibilities exhibit a prominent lobe, indicating that the envelope contains one or several zones with a large local intensity gradient. The strong closure phase signal clearly shows that the circumstellar envelope of WR 118 can only be described by an asymmetric intensity distribution. We show that a pinwheel nebula seen at low inclination is consistent with the AMBER data. Its size was determined to be 13.91.1 mas. Conclusions: WR 118 possibly harbors a pinwheel nebula, which suggests a binary nature of the system. According to our best model, the period of the system would be ?60 days (for d=3 kpc), making WR 118 the shortest-period pinwheel nebula known so far. The observations presented in this paper were obtained with the AMBER instrument of ESO's Very Large Telescope Interferometer (VLTI) as part of the guaranteed time programme 079.D-0359(A) (PI: T. Driebe). The reduced data will be sent to the ESO archive.

Millour, F.; Driebe, T.; Chesneau, O.; Groh, J. H.; Hofmann, K.-H.; Murakawa, K.; Ohnaka, K.; Schertl, D.; Weigelt, G.

2009-11-01

444

118. Back side technical facilities S.R. radar transmitter & computer ...  

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

118. Back side technical facilities S.R. radar transmitter & computer building no. 102, "building sections - sheet I" - architectural, AS-BLT AW 35-46-04, sheet 13, dated 23 January, 1961. - Clear Air Force Station, Ballistic Missile Early Warning System Site II, One mile west of mile marker 293.5 on Parks Highway, 5 miles southwest of Anderson, Anderson, Denali Borough, AK

445

The quadrupole moments of the 5- states in 116Sn, 118Sn and 120Sn  

Microsoft Academic Search

The quadrupole interaction frequencies omega0 = 3eQ1Vzz\\/41(21-1) h in the 5- state of 118Sn have been measured by time differential perturbed angular correlation technique in Sn, Sb and (95% Sn+5% Sb) environments. The omega0 for 116Sn was determined in Sn environment only. With the help of the known electric field gradient 1) of Sn in a Sn lattice the quadrupole

K. Krien; B. Klemme; R. Folle; E. Bodenstedt

1974-01-01

446

Crystallinity of Dynasan 114 and Dynasan 118 matrices for the production of stable Miglyol -loaded nanoparticles  

Microsoft Academic Search

This study focuses on the physicochemical characterization of lipid materials useful for the production of the so-called solid\\u000a lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC). The chosen lipids were Dynasan114 (glyceril trimyristate) and Dynasan118 (glyceril tristearate) as solid lipids (SL), melting temperature above 80C, and Miglyol812 (caprylic\\/capric triglyceride) and Miglyol840 (propylene glycol dicaprylate\\/dicaprate) as liquid lipids (LL), crystallizing below

Patrcia Severino; Samantha C. Pinho; Eliana B. Souto; Maria H. A. Santana

447

Neutron capture resonances in 116Sn, 118Sn, and 120Sn.  

NASA Astrophysics Data System (ADS)

The neutron capture cross section of 116Sn, 118Sn, and 120Sn which were determined recently with the Karlsruhe 4? BaF2 detector have been reanalyzed at low energies. Resonance parameters were extracted by means of a shape analysis program, thus allowing a more reliable determination of the averaged cross sections below 20 keV. This study confirms the previously reported stellar cross sections. Accordingly the results of the s-process studies based on these data remain unchanged.

Wisshak, K.; Voss, F.; Kppeler, F.

1996-04-01

448

Neutron capture resonances in 116Sn, 118Sn, and 120Sn  

NASA Astrophysics Data System (ADS)

The neutron capture cross sections of 116Sn, 118Sn, and 120Sn, which were determined recently with the Karlsruhe 4? BaF2 detector, have been reanalyzed at low energies. Resonance parameters were extracted by means of a shape analysis program, thus allowing a more reliable determination of the averaged cross sections below 20 keV. This study confirms the previously reported stellar cross sections. Accordingly, the results of the s-process studies based on these data remain unchanged.

Wisshak, K.; Voss, F.; Kppeler, F.

1996-11-01

449

Aircraft-based Radiometric Imaging of Tropospheric Temperature and Precipitation Using the 118.75-GHz Oxygen Resonance.  

NASA Astrophysics Data System (ADS)

Passive microwave imagine of O2emissions using the 118.75-GHz(1) resonance has been investigated for tropospheric and stratosphere remote sensing of atmospheric temperature and precipitation. An imaging millimeter-wave spectrometer (MTS) using eight double-sideband channels centered around the 118.75-GHz O2 resonance, and including a fixed-beam 53.65-GHz radiometer and video camera was constructed. The MTS collected data during 33 flights of the NASA ER-2 high-altitude aircraft in 1986 during the Genesis of Atlantic Lows Experiment (GALE) and the Cooperative Huntsvilie Meteorological Experiment (COHMEX), yielding the first high spatial resolution microwave images of atmospheric O2 brightness.The isolated 118-GHz fine offers higher spatial resolution and precipitation sensitivity than O2 lines in the 5-mm band near 60 GHz. The brightness temperature perturbations of clouds in nonprecipitating regions are typically twice as large in the 118-GHz channels relative to comparable 60-GHz channels. However, observations over cirrus anvils show that the 118-GHz brightnesses are not adversely sensitive to some optically opaque cloud cover. Thus, these channels are expected to be useful for temperature sounding in the presence of clouds, although retrieval ambiguities can result from variations in the water vapor profile and surface emissivity. The demonstration of 118-GHz temperature profile retrievals is left for a subsequent paper.Over deep convective precipitation, 118-GHz brightness temperature images are characterized by decreases of up to 200 K due to strong scattering in the storm core. The amplitudes of the 118-GHz brightness perturbations contain information on the altitude of the cell top. The shape of the 118-GHz spectrum is also suggested to contain altitude information by virtue of the various peaking altitudes of the 118-GHz weighting functions. Precipitation cells observed by the MTS sometimes appear in bands or rows, and have been accompanied by periodic radiance structures.

Gasiewski, A. J.; Barrett, J. W.; Bonanni, P. G.; Staelin, D. H.

1990-07-01

450

The giant lobes of Centaurus A observed at 118 MHz with the Murchison Widefield Array  

NASA Astrophysics Data System (ADS)

We present new wide-field observations of Centaurus A (Cen A) and the surrounding region at 118 MHz with the Murchison Widefield Array (MWA) 32-tile prototype, with which we investigate the spectral-index distribution of Cen A's giant radio lobes. We compare our images to 1.4 GHz maps of Cen A and compute spectral indices using temperature-temperature plots and spectral tomography. We find that the morphologies at 118 MHz and 1.4 GHz match very closely apart from an extra peak in the southern lobe at 118 MHz, which provides tentative evidence for the existence of a southern counterpart to the northern middle lobe of Cen A. Our spatially averaged spectral indices for both the northern and southern lobes are consistent with previous analyses, however we find significant spatial variation of the spectra across the extent of each lobe. Both the spectral-index distribution and the morphology at low radio frequencies support a scenario of multiple outbursts of activity from the central engine. Our results are consistent with inverse-Compton modelling of radio and gamma-ray data that support a value for the lobe age of between 10 and 80 Myr.

McKinley, B.; Briggs, F.; Gaensler, B. M.; Feain, I. J.; Bernardi, G.; Wayth, R. B.; Johnston-Hollitt, M.; Offringa, A. R.; Arcus, W.; Barnes, D. G.; Bowman, J. D.; Bunton, J. D.; Cappallo, R. J.; Corey, B. E.; Deshpande, A. A.; deSouza, L.; Emrich, D.; Goeke, R.; Greenhill, L. J.; Hazelton, B. J.; Herne, D.; Hewitt, J. N.; Kaplan, D. L.; Kasper, J. C.; Kincaid, B. B.; Koenig, R.; Kratzenberg, E.; Lonsdale, C. J.; Lynch, M. J.; McWhirter, S. R.; Mitchell, D. A.; Morales, M. F.; Morgan, E.; Oberoi, D.; Ord, S. M.; Pathikulangara, J.; Prabu, T.; Remillard, R. A.; Rogers, A. E. E.; Roshi, D. A.; Salah, J. E.; Sault, R. J.; Shankar, N. Udaya; Srivani, K. S.; Stevens, J.; Subrahmanyan, R.; Tingay, S. J.; Waterson, M.; Webster, R. L.; Whitney, A. R.; Williams, A.; Williams, C. L.; Wyithe, J. S. B.

2013-09-01

451

COST-EFFECTIVE METHOD FOR PRODUCING SELF SUPPORTED PALLADIUM ALLOY MEMBRANES FOR USE IN EFFICIENT PRODUCTION OF COAL DERIVED HYDROGEN  

SciTech Connect

Competed fabrication of an initial series of copper and palladium-copper alloy membranes in the range of 1-8 microns in thickness up to 6 inch x 8 inch in area. Films were produced using both e-beam evaporation (with and without ion assist) and magnetron sputtering from a 60%Pd/40%Cu alloy target. Pure copper and palladium-copper alloy films, with essential no intrinsic stress, were produced on both polystyrene and polyvinyl alcohol substrates. Various processing parameters and techniques were investigated in order to minimize defects and maximize uniformity in single layer films. Even though films to date are visually defect free, we are able to observe sub-micron size defects using a backlighting technique; we are currently investigating a number of methods to create a gas impermeable membrane. At present, the metal films are effectively removed from the polymer backing material by merely immersing the film in an appropriate solvent; chloroform for the polystyrene and water for the PVA. In the future we plan to investigate alternative methods for removing the polymer backing that are more suited to large scale, low-cost manufacturing.

B. Lanning; J. Arps

2004-01-01

452

Preliminary studies on palladium nanoparticle as a novel label for DNA microarray and their corresponding detection.  

PubMed

This paper firstly describes the preliminary results achieved by using palladium nanoparticle (Pd NP) as a novel label for the detection of DNA hybridization in DNA microarray. And two signal amplification procedures based on "the silver staining" or "the cobalt staining" are presented during above analysis. The results show that the label Pd NP-ssDNA (target) (single strand DNA(target)) performs high single base pair mismatch-discrimination capability. The succeeding silver staining or cobalt staining procedure greatly amplifies such a signal through the catalysis of Pd. For "the silver staining:' the background staining is very low and the silver deposition only occurs around Pd NPs. So such a procedure provides a alternative for "Gold Label Silver Stain" presented by Mirkin C. A. For "the cobalt staining," not only a colorimetric array but also a magnetic sensor (such as Magnetic Tunnel Junction sensor, MTJ) can be used to detect the obtained cobalt dot due to its strong magnetic property, which provides a new strategy for DNA microarray detection. So as the proof-of-concept investigations, this work proved the feasibility of the application of Pd NPs as the label in DNA microarray assay. PMID:23858969

Wang, Zhifei; Li, Hongyin; Zhen, Shuang; Zhang, Yuanying; He, Nongyue

2013-06-01

453

Liquidliquid extraction of palladium(II) and gold(III) with N-benzoyl- N?, N?-diethylthiourea and the synthesis of a palladium benzoylthiourea complex  

Microsoft Academic Search

N-Benzoylthioureas have been reported to form complexes with gold (III) and palladium (II) and other transition metals. In this study, an N-benzoyl-N?,N?-diethylthiourea (3f) ligand was used in the solvent extraction of palladium(II) and gold(III) from aqueous chloride media (0.1 mol l?1 NaCl). The distribution coefficient was determined as a function of both metal concentration in the aqueous phase and extractant

Merc Dom??nguez; Enriqueta Antic; Lothar Beyer; Angel Aguirre; Santiago Garc??a-Granda; Victoria Salvad

2002-01-01

454

Synthesis of small palladium nanoparticles stabilized by bisphosphine BINAP bearing an alkyl chain and their palladium nanoparticle-catalyzed carbon?carbon coupling reactions under room-temperature  

Microsoft Academic Search

A new bisphosphine ligand, C8-BINAP, and C8-BINAP- stabilized palladium nanoparticles have been prepared; C8- BINAP was found to be an effective protecting ligand for preparing and stabilizing palladium nanoparticles with very small core size and narrow size distribution and the C8- BINAP-Pd nanoparticles behave as an efficient catalyst for carbon-carbon coupling reactions at room temperature.

Ryouta Tatumi; Tomoki Akita; Hisashi Fujihara

2006-01-01

455

In situ generation of palladium nanoparticles: ligand-free palladium catalyzed ultrafast SuzukiMiyaura cross-coupling reaction in aqueous phase at room temperature  

Microsoft Academic Search

An ultrafast and highly efficient ligand-free SuzukiMiyaura cross-coupling reaction between aryl bromides\\/iodides and arylboronic acids using palladium chloride as catalyst in PEG400\\/H2O in air at room temperature has been developed. TEM showed that palladium nanoparticles were generated in situ from PdCl2\\/PEG400\\/H2O without use of other reductants. The catalyst system can be recycled to reuse three times with good yields.

Zhengyin Du; Wanwei Zhou; Fen Wang; Jin-Xian Wang

2011-01-01

456

Morphological and functional deterioration of the rat thyroid following chronic exposure to low-dose PCB118.  

PubMed

Polychlorinated biphenyls (PCBs) are persistent environmental pollutants that can severely disrupt the synthesis and secretion of endocrine hormones. To investigate the effects of 2,3',4,4',5-pentachlorobiphenyl (PCB118) on thyroid structure and function, 40 male Wistar rats were divided into 4 equal treatment groups and administered vehicle or one of three doses of PCB118. The experimental groups received intraperitoneal (i.p.) injection of 10, 100, or 1000?g/kg/day PCB118, 5 days per week for 13 weeks, whereas the control group was injected with corn oil (vehicle). Serum concentrations of free thyroxine (FT4), free triiodothyronine (FT3) and thyroid stimulating hormone (TSH) were measured by radioimmunoassays. Histopathological and ultrastructural changes in the thyroid were observed under light microscopy and transmission electron microscopy (TEM). The mRNA expression levels of the sodium-iodide symporter (NIS) and thyroglobulin (TG) were quantified by real-time PCR. Increasing doses of PCB118 resulted in progressively lower FT3, FT4 and TSH concentrations in serum. Injection of PCB118 at all doses led to histopathological deterioration of the thyroid characterized by follicular hyperplasia and expansion, shedding of epithelial cells and fibrinoid necrosis. Follicle cells exhibited swollen or vacuolated endoplasmic reticula, as revealed by TEM. Exposure to PCB118 also caused significant decreases in NIS and TG mRNA expression levels. Chronic exposure to low-dose PCB118 and other PCB congeners may be a significant risk factor for thyroid diseases. PMID:23557935

Tang, Jin-Mei; Li, Wen; Xie, Yu-Chun; Guo, Hong-Wei; Cheng, Pei; Chen, Huan-Huan; Zheng, Xu-Qin; Jiang, Lin; Cui, Dai; Liu, Yun; Ding, Guo-Xian; Duan, Yu

2013-04-02

457

Identification and production of 3-hydroxy-? 9 - cis -1,18-octadecenedioic acid by mutants of Candida tropicalis  

Microsoft Academic Search

The transformation of oleic acid by mutants of Candida tropicalis was studied in fed-batch cultures. Besides ?9-cis1,18-octadecenedioic acid, 3-hydroxy-?9-cis1,18-octadecenedioic acid was detected as the main fermentation product. Here we describe the production, isolation and the\\u000a complete chemical characterization of the purified 3-hydroxy-?9-cis1,18-octadecenedioic acid. The geometric configuration of the double bond was not changed during bioconversion. The enantiomeric\\u000a excess of the

D. Fabritius; H. J. Schfer; A. Steinbchel

1996-01-01

458

Bulk synthesis of nanoporous palladium and platinum powders  

SciTech Connect

Disclosed is a method for providing nanoporous palladium and platinum powders. These materials were synthesized on milligram to gram scales by chemical reduction of tetrahalo-complexes with ascorbate in a concentrated aqueous surfactant at temperatures between -20.degree. C. and 30.degree. C. The prepared particles have diameters of approximately 50 nm, wherein each particle is perforated by pores having diameters of approximately 3 nm, as determined by electron tomography. These materials are of potential value for hydrogen and electrical charge storage applications.

Robinson, David B. (Fremont, CA); Fares, Stephen J. (Pleasanton, CA); Tran, Kim L. (Livermore, CA); Langham, Mary E. (Pleasanton, CA)

2012-04-17

459

Synthesis of monodispersed bimetallic palladium-copper nanoscale colloids  

SciTech Connect

Bimetallic clusters have been the subject of many studies of the surface chemistry and catalytic properties of metal crystallites on solid supports. Mixtures of palladium acetate and copper acetate were refluxed in 2-ethoxyethanol in the presence of poly(vinylpyrrolidone) to give 40-[angstrom] alloy nanoclusters. TEM and EDAX analysis showed that the particles were homogeneously bimetallic and crystalline, with a composition determined by the ratio of the metal acetates used. Carbon monoxide adsorbed on the colloidal particles binds reversibly to both metals. 9 refs., 3 figs.

Bradley, J.S.; Hill, E.W.; Klein, C. (Exxon Research and Engineering Co., Annandale, NJ (United States)); Chaudret, B.; Duteil, A. (CNRS, Toulouse (France))

1993-03-01

460

trans-Dichloridobis(triphenyl-phosphane-?P)palladium(II) benzene hemisolvate  

PubMed Central

The title complex, [PdCl2(C18H15P)2]0.5C6H6, has the PdII ion in a square-planar coordination mode (r.m.s. deviation for Pd, P and Cl atoms = 0.024?) with the PPh3 and Cl ligands mutually trans. The benzene solvent molecule is located about a crystallographic inversion centre. The title complex is isostructural with trans-dichloridobis(triphenylphosphane)palladium(II) 1,4-dichlorobenzene sesquisolvate [Kitano et al. (1983 ?). Acta Cryst. C39, 10151017].

Meyer-Wegner, Frank; Lerner, Hans-Wolfram; Sinke, Tanja; Bolte, Michael

2012-01-01

461

Synthesis of Dihydrobenzofurans via Palladium-Catalyzed Heteroannulations  

SciTech Connect

Palladium-catalyzed heteroannulation of 1,3-dienes with 3-iodo-2-alkenols, and 2-iodo-2-alkenols, as well as their amino analogs, affords the corresponding cyclic ethers and amines respectively. The presence of a {beta}-hydrogen in the vinylic halide results in {beta}-hydride elimination giving the corresponding alkyne. The presence of a bulky group in the {alpha}-position of the vinylic halide results in failure or reduced amounts of annulation products. A chloride source, pyridine base and electron-rich phosphine are essential for this reaction.

Roman Vladimirovich Rozhkov

2004-12-19

462

Determination of palladium and platinum by atomic absorption.  

PubMed

Palladium and platinum are determined by atomic absorption after fire-assay concentration into a gold bead. The limit of determination is ~0.06 ppm in a 20-g sample. Serious depressive interelement interferences are removed by buffering the solutions with a mixture of cadmium and copper sulphates with cadmium and copper concentrations each at 0.5%. Substantial amounts of Ag, Al, Au, Bi, Ca, Co, Cr, Fe, Hg, K, La, Mg, Mn, Mo, Na, Ni, Pb, Te, Ti, V, Y, Zn, and the platinum metals do not interfere in the atomic-absorption determination. PMID:18960553

Schnepfe, M M; Grimaldi, F S

1969-05-01

463

The study of palladium ions incorporation into the mesoporous ordered silicates  

NASA Astrophysics Data System (ADS)

In this work mesoporous ordered silica materials containing palladium species were prepared using of tetraammine palladium chloride ([Pd(NH3)4]Cl2) complex as a palladium source during synthesis and by wetness impregnation of pure support by solution containing dissolved metal salt. The ammonia ligands from tetraammine palladium chloride were removed during calcination or during thermal treatment at 300 C in oxygen atmosphere. For reduction of palladium ions to metallic state as prepared materials were treated by hydrogen at high temperature. In this work the locations of palladium atoms in silica lattice were considered by study of binding energy changes of cardinal atoms of mesoporous ordered silica. Ordered mesoporous silicates (MCM-41 and SBA-15) are very promising materials for a wide range of industrial applications due to their unique properties as well-defined ordered structure and excellent textural properties. They exhibit high surface area with high pore volume. Such supports ensure a high dispersion of the metal nanoparticles or other active phases providing the high activity of solid catalysts. The obtained materials were characterized primarily by X-ray diffraction (XRD) technique, X-ray photoelectron spectroscopy (XPS), nitrogen adsorption-desorption isotherms, and infrared spectroscopy. The proportional content of palladium was controlled by X-ray fluorescence technique.

Zienkiewicz-Strza?ka, M.; Pikus, S.

2012-11-01

464

Photoneutron cross sections for 118--124Sn and the ?-ray strength function method  

NASA Astrophysics Data System (ADS)

Photoneutron cross sections were measured for 118Sn, 119Sn, 120Sn, 122Sn, and 124Sn near neutron threshold with quasi-monochromatic laser-Compton scattering ? rays. A systematic analysis of the present photoneutron data and existing neutron-capture data is made using the ?-ray strength function on the basis of the HFB + QRPA model of E1 strength supplemented with a pygmy dipole resonance, which was deduced from a previous study on 116Sn and 117Sn. Radiative neutron capture cross sections for two radioactive nuclei, 121Sn and 123Sn, are deduced through the ?-ray strength function method.

Utsunomiya, H.; Goriely, S.; Kamata, M.; Akimune, H.; Kondo, T.; Itoh, O.; Iwamoto, C.; Yamagata, T.; Toyokawa, H.; Lui, Y.-W.; Harada, H.; Kitatani, F.; Goko, S.; Hilaire, S.; Koning, A. J.

2011-11-01

465

Spectral types for objects in the KISO survey. VII - Data for 118 stars  

NASA Astrophysics Data System (ADS)

The spectra of 118 ultraviolet excess objects found in the Kiso Schmidt camera survey are reported. Observations were obtained in 1989 and 1990 at 12 A resolution with either the 1.3 m McGraw-Hill telescope or the 2.4 m Hiltner telescopes at the Michigan-Dartmouth-MIT Observatory on Kitt Peak and cover the wavelength interval of 4000-7200 A. The breakdown by spectral class in the present sample is similar to that found in earlier papers and includes: 18 QSOs, 11 emission line objects, and 26 white dwarfs.

Wegner, Gary; Boley, Forrest I.

1993-02-01

466

Isotope shifts, spins and hyperfine structures of 118,146Cs and of some francium isotopes  

Microsoft Academic Search

High-resolution laser spectroscopy using thermal atomic beams has been performed on-line with the ISOLDE facility at CERN. It allowed the measurement of the spins, isotope shifts and hyperfine structures of the D2 line of 118,146Cs, and that of the hyperfine factors of the first P1\\/2 level of 133,135,137,139,141,143Cs and 210,212,213,221Fr. Previous data concerning 207-213,220-228Fr have also been reanalysed. All results

A. Coc; C. Thibault; F. Touchard; H. T. Duong; P. Juncar; S. Liberman; J. Pinard; M. Carre; J. Lerme; J. L. Vialle; S. Buttgenbach; A. C. Mueller; A. Pesnelle

1987-01-01

467

QED corrections to the binding energy of the eka-radon (Z=118) negative ion  

SciTech Connect

Quantum electrodynamic (QED) electron self-energy and vacuum polarization corrections to the binding energy of the 8s electron in the eka-radon (Z=118) negative ion are calculated. This ion was found recently to be stable in the Dirac-Coulomb-Breit Hamiltonian; an improved basis and correlating all 119 electrons give a binding energy of -0.064(2) eV. The QED contribution is 0.0059(5) eV, amounting to a 9% reduction of the binding energy. This is the largest relative QED effect reported for neutral or weakly ionized atoms, and confirms the importance of QED corrections for superheavy elements.

Goidenko, Igor [Institute of Physics, St. Petersburg State University, 198904 Uljanovskaya 1, Petrodvorets, St. Petersburg (Russian Federation); Labzowsky, Leonti [Institute of Physics, St. Petersburg State University, 198904 Uljanovskaya 1, Petrodvorets, St. Petersburg (Russian Federation); Petersburg Nuclear Physics Institute, 188350, Gatchina, St. Petersburg (Russian Federation); Eliav, Ephraim; Kaldor, Uzi [School of Chemistry, Tel Aviv University, 69978 Tel Aviv (Israel); Pyykkoe, Pekka [Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), FIN-00014 Helsinki (Finland)

2003-02-01

468

Effectiveness of foam earplug hearing protection for artillerymen firing L118/119 105 mm howitzers.  

PubMed

A field study was carried out to study the effect of firing the British L118/9 195 mm howitzer (Hamel gun) on the hearing of crewmen wearing EAR earplugs. Two guns and gun crews were placed 7 m apart, each gun firing 40 rounds during each of 2 successive days. Bekesy type audiometry was carried out before and after firing and was also used to measure the attenuation or goodness of fit of the earplugs. No significant hearing loss was measured in any of the crewmen. It was concluded that, if correctly fitted, EAR earplugs provide adequate hearing protection under these exposure conditions. PMID:2507968

Carter, N L

1989-09-01

469

41 CFR 102-118.540 - Who has the authority to audit, settle accounts, and/or start collection action for all...  

Code of Federal Regulations, 2013 CFR

...and/or start collection action for all transportation services provided for my agency? 102-118...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Claims and Appeal...

2013-01-01

470

41 CFR 102-118.185 - When buying freight transportation, must my agency reference the applicable contract or tender on...  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false When buying freight transportation, must my agency reference the applicable...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Use of Government...

2013-01-01

471

41 CFR 102-118.190 - When buying passenger transportation must my agency reference the applicable contract?  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false When buying passenger transportation must my agency reference the applicable contract...Continued) FEDERAL MANAGEMENT REGULATION TRANSPORTATION 118-TRANSPORTATION PAYMENT AND AUDIT Use of Government...

2013-01-01

472

21 CFR 118.11 - Registration requirements for shell egg producers covered by the requirements of this part.  

Code of Federal Regulations, 2013 CFR

...false Registration requirements for shell egg producers covered by the requirements of this...PRODUCTION, STORAGE, AND TRANSPORTATION OF SHELL EGGS § 118.11 Registration requirements for shell egg producers covered by the requirements of...

2013-04-01

473

Observation of a vh{sub 11/2} pair alignment in neutron-rich {sup 118}Pd  

SciTech Connect

The yrast band was significantly extended to 14{sup +} and the {gamma} band to 5{sup +} in neutron-rich {sup 118}Pd by measuring the {gamma}-{gamma}-{gamma} coincidences emitted from the spontaneous fission of {sup 252}Cf with Gammasphere. The first band crossing was observed in the yrast band in {sup 118}Pd at a frequency of {Dirac_h}{omega}{approx}0.36 MeV at the starting point of the backbending, which is similar to that found in {sup 112-116}Pd. The first bandbending in the yrast cascade in {sup 118}Pd is interpreted to be built on a two h{sub 11/2} neutron configuration based on its similarity to the yrast bands in even-even {sup 112-116}Pd. Our result indicates {sup 118}Pd still maintains a prolate shape. The quasineutron Routhian calculations indicate a lower crossing frequency for the h{sub 11/2} level.

Zhang, X. Q.; Hamilton, J. H.; Ramayya, A. V.; Zhu, S. J.; Hwang, J. K.; Beyer, C. J.; Kormicki, J.; Jones, E. F.; Gore, P. M.; Babu, B. R. S. (and others)

2001-02-01

474

Encapsulation of palladium crystallites in carbon and the formation of wormlike nanostructures  

SciTech Connect

This note reports the successful inclusion of cubic palladium crystals inside giant carbon clusters and the formation of novel wormlike carbon nanostructures (nanoworms). The head of the [open quotes]worm[close quotes] typically 20-50 nm in diameter, consists of palladium encapsulated in carbon, and the body of the [open quotes]worm[close quotes] several hundred nanometers in length, consists of many sections of carbon tubes with cone-shaped internal voids. The technique used to generate carbon-encapsulated palladium is the electric arc method. 17 refs., 3 figs.

Wang, Y. (DuPont Company, Wilmington, DE (United States))

1994-01-12

475

Development of a composite palladium membrane for selective hydrogen separation at high temperature  

SciTech Connect

In this paper a method is described for development of a composite palladium membrane for selective hydrogen separation at high temperature. Electroless plating is used to form a thin palladium film on a silver porous substrate. The composite formed showed excellent mechanical strength and very large selectivity for hydrogen. The studies performed so far suggest that electroless plating can be utilized in making a metal composite membrane that can be used at high temperatures. Composite properties seem fairly constant at high temperatures. The permeability of the composite membrane is comparable to theoretical permeabilities for pure palladium.

Govind, R.; Atnoor, D.

1991-03-01

476

[The influence of palladium containing new synthesized biological active substances to protein metabolism in organism].  

PubMed

The aim of the research was to study new drugs with palladium developed and synthesized at the Azerbaijan Medical University Scientific-Research Center Two compounds of palladium-4-aminopyridin ammonium tetrachlor palladium and Bi 4-aminopyridin dichlor were studied as more perspective substances which decrease growth of tumor. Water solution of 0.5% of these compounds were administrated intraperitoneally during 6 sessions. There were noticeable changes in protein metabolism, particularly in alpha(1) and alpha(2) fraction. The drug toxicity (Nedoshvina method), maximal endurance (LD(0)), medium lethal dose (LD(50)), lethal dose (LD(100)), cytogenetic activity (Rappoport method) were studied. PMID:19644208

Polukhova, Sh M; Ganiev, M M; Garaev, G Sh

477

Reactions of bis(chlorophenylarsino) alkanes with palladium(II) salts  

SciTech Connect

The yields, results of elemental analysis for arsenic content, and IR- and UV-spectral data of the cyclic arsine oxides synthesized are given. The IR-spectral data confirmed the structure of these cyclic arsine oxides. The UV spectra of the compounds were determined in ethanol and the structure of the complexes was studied by vibrational spectroscopy. In the reactions of bis(chlorophenylarsino) alkanes and cyclic arsine oxides with palladium(II) salts, complex compounds of a single type are formed because the complex formation of palladium(II) salts with bis(chlorophenylarsino) alkanes is accompanied by the catalytic hydrolysis of the latter in the coordination sphere of palladium.

Gamayurova, V.S.; Shabrukova, N.V.; Chernova, A.V.; Shagidullin, R.R.; Doroshkina, G.M.

1988-01-20

478

Cytotoxic palladium(II) complexes of 8-aminoquinoline derivatives and the interaction with human serum albumin  

Microsoft Academic Search

Palladium(II) complexes are potential antitumor metallodrugs for their chemical resemblance to platinum(II) complexes. Two palladium(II) complexes (1 and 2) in the formula of [PdLnCl] [L1 = N-(tert-butoxycarbonyl)-l-methionine-N?-8-quinolylamide, L2 = L-alanine-N?-8-quinolylamide] have been synthesized accordingly. The structures of the complexes were fully characterized by X-ray crystallography. The palladium(II) center in 1 is coordinated by two N atoms and an S atom

Liangliang Yan; Xiaoyong Wang; Yanqing Wang; Yangmiao Zhang; Yizhi Li; Zijian Guo

479

Cyclometallation of N, N-dimethyl-2-bromothiobenzamide and some related thioamides with palladium(0) and palladium(II)  

Microsoft Academic Search

N,N-Dimethyl-2-X-thiobenzamide [X?Cl (abbreviated as Hcbt) and Br (Hbbt)] and N,N-dimethyl-2-(2-bromophenyl) thioacetamide (Hbpt) were cyclopalladated at one of the N-methyl groups upon reaction with lithium tetrachloroparalladate(II), while oxidative addition took place at the aryl-halogen bond of Hbbt, Hbpt and N,N-dimethyl-2-iodothiobenzamide (Hibt) upon reaction with bis(dibenzylideneacetone)palladium(0). The reaction products, and their tri-n-butylphosphine (PBu3) and 4-tert-butylpyridine (tbp) derivatives, were characterized by IR and

Masakazu Kita

1995-01-01

480

Aircraft-based Radiometric Imaging of Tropospheric Temperature and Precipitation Using the 118.75GHz Oxygen Resonance  

Microsoft Academic Search

Passive microwave imagine of O2emissions using the 118.75-GHz(1) resonance has been investigated for tropospheric and stratosphere remote sensing of atmospheric temperature and precipitation. An imaging millimeter-wave spectrometer (MTS) using eight double-sideband channels centered around the 118.75-GHz O2 resonance, and including a fixed-beam 53.65-GHz radiometer and video camera was constructed. The MTS collected data during 33 flights of the NASA ER-2

A. J. Gasiewski; J. W. Barrett; P. G. Bonanni; D. H. Staelin

1990-01-01

481

EXAFS Studies of Palladium Nanoparticles: Size Control and Hydrogenation  

SciTech Connect

We synthesized several samples of thiol-stabilized Pd nanoparticles by controlling their size with the palladium/thiol ratio from 5:1 to 1:3. Size dependence on the Pd/thiol ratio was verified by comparing the Pd-S and Pd-Pd coordination numbers. The average size of free-standing nanoparticles decreased as the thiol concentration increased and stabilized at the 1:2 value of palladium/thiol ratio. In addition to the free-standing nanoparticles, we analyzed their thin films by depositing them as monolayers on Kapton film using Langmuir-Blodgett technique. We obtained that the structure of the nanoparticles was preserved, within the accuracy of the EXAFS measurement, after preparing Langmuir films. We also studied the effect of hydrogenation on the both type of the nanoparticles (the free standing ones and those in the monolayers). In both cases, exposure to 4 atm H2 pressure resulted in the elongation of the average Pd-Pd distance. The larger change (0.06{+-}0.03 A, relative to the non-hydrogenated films) was observed in the smaller clusters (with 1:1 Pd thiol ratio), and the smaller change (0.03{+-}0.01 A) - in the larger clusters (with 3:1 ratio). Such bond length expansion is attributed to the defects caused by H2 adsorption.

Harris, T. [Chemistry Department, Bar Ilan University (Israel); Soussan, L.; Frenkel, A. I. [Physics Department, Yeshiva University, New York (United States); Isseroff, R. [Stella K. Abraham High School, Hewlett, NY (United States); Sun, Y.; Rafailovich, M. H. [Materials Science Department, State University of New York, Stony Brook, NY (United States)

2007-02-02

482

Palladium-103 Radiation Therapy for Small Choroidal Melanoma.  

PubMed

PURPOSE: To evaluate outcomes after ophthalmic plaque radiation therapy for small choroidal melanomas. DESIGN: Retrospective study, case series. PARTICIPANTS: Seventy-two patients with choroidal melanomas ?1.5 and ?2.4 mm apical height and ?10 mm width treated between 2002 and 2012, with a minimum follow-up of 8 months. METHODS: All patients were treated with palladium-103 plaque brachytherapy. Mean radiation dose to the tumor apex was 82.4 Gy (range, 70.0-102 Gy). MAIN OUTCOME MEASURES: Local control, radiation complications, visual acuity, and metastatic rate. RESULTS: Plaque radiotherapy provided 100% local tumor control and eye retention at a mean 54 months of observation (95% confidence interval, 46-63 months). The most common long-term brachytherapy-related complications were radiation maculopathy (43.1%) and radiation optic neuropathy (20.8%) developing at a mean of 27 months (range, 9-72 months) after irradiation. In this series, 94.4% of patients maintained 20/200 or better vision. There has been no small choroidal melanoma-related metastasis. CONCLUSIONS: Palladium-103 plaque radiation therapy offered excellent local control and visual acuity outcomes for patients with small choroidal melanoma. FINANCIAL DISCLOSURE(S): The author(s) have no proprietary or commercial interest in any materials discussed in this article. PMID:23774104

Semenova, Ekaterina; Finger, Paul T

2013-06-14

483

Rapid Responding Palladium-Silver Surface Modified Microsensor for Hydrogen  

SciTech Connect

Most palladium thin film based hydrogen gas sensors have response and recovery times that are too long to make them useful in vehicular and stationary gas leak detection applications. In contrast, a palladium-silver thin film based microcantilever (MC) hydrogen gas microsensor is reported herein with near ideal response characteristics for use in these hydrogen economy related applications. Specifically, 3-10 second response and recovery times have been measured for these sensors in contrast to previous sensor response measurements of several to tens of minutes using Pd thin film and MC based sensing techniques. The much reduced response times observed in the present study are attributed to a wet chemical Pd-Ag thin film deposition technique and a gas conditioning protocol that produces a highly nanostructured, porous film that rapidly adsorbs and desorbs H2, allowing rapid equilibration with the H2 concentration in the surrounding air. The wet chemical process and gas phase conditioning offer a novel approach at creating highly structured surfaces that have not been reported for MC devices. Additionally, these sensors have very low H2 detection thresholds, wide dynamic range and very good selectivity relative to common interferents.

Patton, James [ORNL; Hunter, Scott Robert [ORNL; Sepaniak, Michael [University of Tennessee, Knoxville (UTK); Datskos, Panos G [ORNL; Smith, Barton [ORNL

2010-01-01

484

Non-trivial behavior of palladium(II) acetate.  

PubMed

Reaction of activated palladium metal with a HNO3/acetic acid mixture produces both orange Pd3(OAc)6, 1, and purple Pd3(OAc)5(NO2), 2. Compound has a trinuclear structure derived from that of the well-known triangular complex 1 in which one acetate group has been replaced by a nitrite group which is bonded to one palladium atom by the nitrogen atom and to another Pd atom using one of the oxygen atoms. Highly pure 1 can be made by continuous removal of the nitric oxides from the reaction mixture using a flow of N2. 1H NMR spectra of solutions of 1 in CDCl3 and C6D6 show several signals of various intensities when a small amount of water is present in the deuterated solvents but only one signal when the solvents are thoroughly dried. These results are consistent with the occurrence of one or more hydrolysis processes when the solvents contain water and suggest that hypotheses about various [Pd(OAc)2]n aggregates that have previously been brought forward in the literature to explain the complexity of the spectrum of 1 are unnecessary, especially for nonpolar solvents. Compound 2 does not hydrolyze, and in wet or dried solvents shows a 1H NMR spectrum that consists of five equal-intensity signals due to the five nonequivalent acetate groups. PMID:15909048

Bakhmutov, Vladimir I; Berry, John F; Cotton, F Albert; Ibragimov, Sergey; Murillo, Carlos A

2005-05-04

485

Palladium(II) complexes of diphenylvinyl- and phenyldivinylphosphine  

SciTech Connect

Palladium(II) complexes of the ligands L = Ph/sub 2/PCH/double bond/CH/sub 2/ and PhP(CH/double bond/CH/sub 2/)/sub 2/ have been prepared and characterized by elemental analysis, infrared spectroscopy, and /sup 1/H, /sup 1/H(/sup 31/P), /sup 13/C(/sup 1/H), /sup 31/P(/sup 1/H), and /sup 1/H//sup 13/C HETCOR nuclear magnetic resonance spectroscopy. These complexes exist as temperature-dependent equilibrium mixtures of cis and trans isomers in solution. Equilibrium thermodynamics for the isomerization process cis-L/sub 2/PdX/sub 2/ /rightleftharpoons/ trans-L/sub 2/PdX/sub 2/, determined by variable-temperature /sup 31/P(/sup 1/H) NMR spectroscopy, demonstrate that the cis isomers are in general thermodynamically more stable than the trans isomers. However, the relatively isomer stabilities are anion dependent with the trans isomer becoming more stable in the order Cl < Br < I. Coordination of a vinylphosphine to palladium(II) strongly polarizes the C/double bond/C double bond as evidenced by /sup 13/C NMR data. 27 refs., 2 figs., 4 tabs.

Rahn, J.A.; Holt, M.S.; O'Neil-Johnson, M.; Nelson, J.H.

1988-04-20

486

Gd116Co49Sn118: A Complex Intermetallic Phonon-Glass/Electron-Crystal  

NASA Astrophysics Data System (ADS)

State-of-the art thermoelectric devices today operate at very low efficiencies and are expensive to produce. However, the growing need for alternate energy sources based on novel technologies has brought thermoelectrics to the forefront of applied materials research. Thermoelectrics could have a significant impact in this area, if their performance is significantly enhanced to a figure of merit (ZT) above 1.5. Our research focuses on the growth and structure-property relationships of intermetallics, specifically crystal structures with large lattice parameters that contain heavy atoms. These materials may be good thermoelectric candidates due to their potentially low lattice thermal conductivities and enhanced Seebeck values resulting from polar intermetallic properties. We have recently grown Gd116Co49Sn118 (Fm-3m, a 30.2 ), a compound related to the Dy117Co57Sn112 structure type. Physical property measurements indicate that this is an ambipolar semiconductor with an exceptionally low lattice thermal conductivity (?l 0.5 W/m-K). The observed phonon-glass/electron-crystal properties make Gd116Co49Sn118 and its analogues potential thermoelectric candidates.

Schmitt, Devin; Haldolaarachchige, Neel; Xiong, Yimin; Jin, Rongying; Young, David; Chan, Julia

2011-03-01

487

Tank 241-TX-118, core 236 analytical results for the final report  

SciTech Connect

This document is the analytical laboratory report for tank 241-TX-118 push mode core segments collected between April 1, 1998 and April 13, 1998. The segments were subsampled and analyzed in accordance with the Tank 241-TX-118 Push Mode Core sampling and Analysis Plan (TSAP) (Benar, 1997), the Safety Screening Data Quality Objective (DQO) (Dukelow, et al., 1995), the Data Quality Objective to Support Resolution of the Organic Complexant Safety Issue (Organic DQO) (Turner, et al, 1995) and the Historical Model Evaluation Data Requirements (Historical DQO) (Sipson, et al., 1995). The analytical results are included in the data summary table (Table 1). None of the samples submitted for Differential Scanning Calorimetry (DSC) and Total Organic Carbon (TOC) exceeded notification limits as stated in the TSAP (Benar, 1997). One sample exceeded the Total Alpha Activity (AT) analysis notification limit of 38.4{micro}Ci/g (based on a bulk density of 1.6), core 236 segment 1 lower half solids (S98T001524). Appropriate notifications were made. Plutonium 239/240 analysis was requested as a secondary analysis. The statistical results of the 95% confidence interval on the mean calculations are provided by the Tank Waste Remediation Systems Technical Basis Group in accordance with the Memorandum of Understanding (Schreiber, 1997) and are not considered in this report.

ESCH, R.A.

1998-11-19

488

Synthetic strategies for controlling inter- and intramolecular interactions: Applications in single-molecule fluorescence imaging, bioluminescence imaging, and palladium catalysis  

NASA Astrophysics Data System (ADS)

The field of synthetic organic chemistry has reached such maturity that, with sufficient effort and resources, the synthesis of virtually any small molecule which exhibits reasonable stability at room temperature can be realized. While representing a monumental achievement for the field, the ability to exert precise control over molecular structure is just a means to an end, and it is frequently the responsibility of the synthetic chemist to determine which molecules should actually be synthesized. For better or worse, there exists no competitive free market in academia for new molecules, and as a result, the decision of which compounds should be synthesized is seldom driven by the forces of supply and demand; rather, it is guided by the synthetic chemist's interest in an anticipated structure-function relationship or in the properties of a previously unstudied class of molecules. As a consequence, there exists a pervasive need for chemists with synthetic expertise in fields (e.g., molecular imaging) and subdisciplines of chemistry (e.g., physical chemistry) in which the identification of promising synthetic targets dramatically outpaces the synthetic output in that field or subdiscipline, and ample opportunities are available for synthetic chemists who choose to pursue such cross-disciplinary research. This thesis describes synthetic efforts that leverage these opportunities to realize applications in biological imaging and in palladium catalysis. In Part I, the synthesis and characterization of three novel luminophores and their imaging applications are discussed. The first is a molecular beacon that utilizes a fluorophorefluorophore pair which exhibits H-dimer quenching in the closed conformation. This probe offers several advantages over conventional fluorophore-quencher molecular beacons in the detection of oligonucleotides, both in bulk and at the single-molecule level. Secondly, a fluorescent, Cy3-Cy5 covalent heterodimer is reported, which on account of the proximity of the Cy3 and Cy5 fluorophores, behaves as an optical photoswitch in the presence of a thiol reagent. This unique property was employed to achieve sub-diffraction-limited imaging of the stalks of Caulobacter crescentus cells with 30-nm resolution using STORM (stochastic optical reconstruction microscopy). Lastly, the synthesis of the first selenium analogue of firefly luciferin is described, and this analogue is shown to be a competent substrate for firefly luciferase (fLuc). Remarkably, it exhibits red-shifted bioluminescence emission relative to the native sulfur analogue. The in vivo performance of the selenium and sulfur analogues in imaging are compared by tail-vein injection into nude mice bearing subcutaneous tumor xenografts of a human breast cancer cell line that was stably transduced to express fLuc. Part II of this thesis begins by addressing design considerations in the development of palladium catalysts that effect oxidative transformations under mild conditions (i.e., 1 atm air, room temperature) using molecular oxygen as the terminal oxidant. A newly synthesized cationic palladium complex, [(2,9-dimethylphenanthroline)Pd(OAc)]2[OTf]2, is shown to catalyze aerobic alcohol oxidation under such conditions with an unprecedented initial turnover frequency, but the presence of partially reduced oxygen species results in competitive ligand oxidation with concomitant decrease in catalyst activity. To remedy this, oxidatively resistant ligands, which are essential for the development of next-generation, high-turnover-frequency palladium catalysts that utilize oxygen as a terminal oxidant, have been prepared and effectively employed. In addition, the first general palladium-catalyzed route to the carbonylation of diols is reported. In this system, carbon monoxide (1 atm) serves the carbonyl source, (2,9-dimethylphenanthroline)Pd(OAc) 2 acts as the catalyst, and N-chlorosuccinimide and iodosobenzene are the oxidants for 1,2- and 1,3-diols, respectively. This thesis illustrates the power of synthetic organic chemistry to exert precise control ove

Conley, Nicholas R.

489

PALLADIUM/COPPER ALLOY COMPOSITE MEMBRANES FOR HIGH TEMPERATURE HYDROGEN SEPARATION  

SciTech Connect

This report summarizes progress made during the first year of research funding from DOE Grant No. DE-FG26-03NT41792 at the Colorado School of Mines. The period of performance was September 1, 2003 through August of 2004. Composite membranes, consisting of a thin Pd alloy film supported on a porous substrate have been investigated as a means of reducing the membrane cost and improving H{sub 2} flux. An electroless plating technique was utilized to deposit subsequent layers of palladium and copper over zirconia and alumina-based microfilters. The composite membranes thus made were annealed and tested at temperatures ranging from 250 to 500 C, under very high feed pressures (up to 450 psig) using pure gases and gaseous mixtures containing H{sub 2}, CO, CO{sub 2}, H{sub 2}O and H{sub 2}S, with the purpose of determining the effects these variables had on the H{sub 2} permeation rate, selectivity and percent recovery. The inhibition caused by CO/CO{sub 2} gases on a 7 {micro}m thick Pd-Cu composite membrane was less than 17% over a wide range of compositions at 350 C. H{sub 2}S caused a strong inhibition of the H{sub 2} flux of the same Pd-Cu composite membrane, which is accentuated at levels of 100 ppm or higher. The membrane was exposed to 50 ppm three times without permanent damage. At higher H{sub 2}S levels, above 100 ppm the membrane suffered some physical degradation and its performances was severely affected. The use of sweep gases improved the hydrogen flux and recovery of a Pd-Cu composite membrane. Recently, we have been able to dramatically reduce the thickness of these Pd alloy membranes to approximately one micron. This is significant because at this thickness, it is the cost of the porous support that controls the materials cost of a composite Pd alloy membrane, not the palladium inventory. Very recent results show that the productivity of our membranes is very high, essentially meeting the DOE pure hydrogen flux target value set by the DOE Hydrogen Program. These results were obtained when a 1.3-micron-thick Pd{sub 95}Cu{sub 5} (composition given in mass %) alloy film was coated on a Pall Corporation Membralox{reg_sign} T1-70 tubular ceramic substrate. The flux of this membrane would be even higher if the alloy composition was 40 wt. % Cu.

J. Douglas Way

2004-08-31

490

Wet processing of palladium for use in the tritium facility at Westinghouse, Savannah River, SC. Preparation of palladium using the Mound Muddy Water process  

SciTech Connect

Palladium used at Savannah River for tritium storage is currently obtained from a commercial source. In order to better understand the processes involved in preparing this material, Savannah River is supporting investigations into the chemical reactions used to synthesize this material and into the conditions necessary to produce palladium powder that meets their specifications. This better understanding may help to guarantee a continued reliable source for this material in the future. As part of this evaluation, a work-for-others contract between Westinghouse Savannah River Company and the Ames Laboratory Metallurgy and Ceramics Program was initiated. During FY98, the process for producing palladium powder developed in 1986 by Dan Grove of Mound Applied Technologies (USDOE) was studied to understand the processing conditions that lead to changes in morphology in the final product. This report details the results of this study of the Mound Muddy Water process, along with the results of a round-robin analysis of well-characterized palladium samples that was performed by Savannah River and Ames Laboratory. The Mound Muddy Water process is comprised of three basic wet chemical processes, palladium dissolution, neutralization, and precipitation, with a number of filtration steps to remove unwanted impurity precipitates.

Baldwin, D.P.; Zamzow, D.S.

1998-11-10

491

Improved dynamics and positional bias with a second generation palladium(II)-complexed molecular shuttle.  

PubMed

A second generation palladium(II)-complexed molecular shuttle, featuring structural changes to the size and shape of the macrocycle, shows significantly increased rates of shuttling and improved co-conformational bias compared to the original system. PMID:20309459

Leigh, David A; Lusby, Paul J; McBurney, Roy T; Symes, Mark D

2010-03-05

492

Palladium in Non-Aqueous Solvents. Formation, Stability, and Film Forming Properties.  

National Technical Information Service (NTIS)

Palladium atoms in cold acetone, ethanol, and other organic solvents cluster to form living colloidal particles. The Pd colloids are stable for months at room temperature in acetone, and their particle sizes (about 8 nm) vary slightly according to solvent...

G. Cardenas-Trivino K. J. Klabunde B. Dale

1987-01-01

493

Side-polished fiber Bragg gratings coated with thin palladium film for hydrogen sensing device  

Microsoft Academic Search

A new type of hydrogen sensor with a side-polished fiber Bragg grating coated with thin palladium film was demonstrated with the Bragg wavelength shift of 0.12 nm in the case of 99% hydrogen concentrations.

Chuen-Lin Tien; Hong-Wei Chen; Wen-Fung Liu; Yung-Sen Lin

2006-01-01

494

Microwave enhanced palladium catalysed coupling reactions: a diversity-oriented synthesis approach to functionalised flavones.  

PubMed

Microwave enhanced diversity-oriented synthesis (MEDOS) using palladium catalysed protocols is introduced as a powerful new strategy for the synthesis of systematically modified small molecules and is highlighted by application to functionalised flavones. PMID:17345738

Fitzmaurice, Richard J; Etheridge, Zac C; Jumel, Emelie; Woolfson, Derek N; Caddick, Stephen

2006-12-14

495

Effect of Palladium Overlayer on Samarium Hydride Thin Film Switchable Mirror: Electrochemical and Topographical Study  

NASA Astrophysics Data System (ADS)

Samarium films with a typical thickness of 55 nm deposited by vacuum evaporation and covered with Pd overlayers with thicknesses of 5, 8, 11, and 15 nm were loaded with hydrogen and deloaded in a 1 M KOH solution galvanostatically at room temperature. Our study showed that palladium overlayer thickness plays the most crucial role in observing the fast transition between an as-deposited metallic state and a semiconducting nearly samarium trihydride state as well as in obtaining a very high optical contrast. The desorption of hydrogen from palladium-capped SmH3-? films was studied by in situ transmission measurement during the electrochemical loading/unloading of hydrogen. It was shown that palladium cap layer thickness affects the deloading of hydrogen from the hydrided films. The effect of a palladium overlayer on the surface morphology of metallic and hydrogen-desorbed samarium films showed the sequence of nucleation and growth.

Kumar, Pushpendra; Malhotra, Lalit Kumar

2006-12-01

496

Palladium-Silver Isotopic Systematics in Muonionalusta and Fractionation in the IVA Iron Meteorite Parent Body  

NASA Astrophysics Data System (ADS)

Palladium-silver isotope data for Group IVA iron meteorite Muonionalusta (Pb-Pb age = 4565 Ma) suggest lower initial 107Pd than chondrites, higher Pd/Ag prior to troilite crystallization, and ~8% S in the bulk meteorite.

Horan, M. F.; Carlson, R. W.; Alexander, C. M. O'd.; Blichert-Toft, J.

2011-03-01

497

A general and efficient aldehyde decarbonylation reaction by using a palladium catalyst.  

PubMed

A facile decarbonylation reaction of aldehydes has been developed by employing Pd(OAc)(2). A wide variety of substrates are decarbonylated, without using any exogenous ligand for palladium as well as CO-scavenger. PMID:22441208

Modak, Atanu; Deb, Arghya; Patra, Tuhin; Rana, Sujoy; Maity, Soham; Maiti, Debabrata

2012-03-22

498

Infrared spectroscopic study of the interaction between carbon monoxide and hydrogen on supported palladium  

SciTech Connect

Preadsorbed carbon monoxide on alumina-supported palladium can be used as an indicator to examine the rearrangement of the metallic surface upon the action of hydrogen. The changes of the ir spectra from CO and Pd/Al/sub 2/O/sub 3/ when the sample is brought into contact with hydrogen show that the Pd(111) plane is formed on disordered palladium crystallites even at room temperature, probably as a result of the formation of palladium hydride. Depending on the experimental conditions a number of ir bands are observed when a mixture of CO and H/sub 2/ is passed over the catalyst. These bands are believed to belong to intermediates of carbon monoxide hydrogenation. It is suggested that the surface species is formed on palladium and after that is strongly adsorbed on alumina due to the spillover phenomenon. An attempt is made to explain the difference between the reaction pathways of methanation and methanol formation.

Palazov, A.; Kadinov, G.; Bonev, C.; Shopov, D.

1982-01-01

499

Quinoline-2-aldehyde thiosemicarbazone (QAT) as spectrophotometric reagent for palladium and nickel.  

PubMed

A procedure is described for the extractive spectrophotometric determination of nickel and palladium with quinoline-2-aldehyde thiosemicarbazone. At pH 7.5 nickel forms a 1:2 complex which is soluble in chloroform and has an absorption maximum at 460 nm. Palladium forms a 1:2 complex with maximum absorbance at 510 nm which can be extracted into MIBK from 1M HCl. Both complexes are stable and conform to Beer's law. The molar absorptivities for nickel and palladium are 1.58 x 10(4) and 2.6 x 10(3) 1.mole(-1). cm(-1) respectively. The proposed method is suitable for detection and determination of nickel and palladium in the presence of associated metal ions. The results of the analysis of synthetic mixtures and standard samples are reported. PMID:18962496

Khasnis, D V; Shinde, V M

1979-07-01

500

Sulphur containing novel extractants for extraction-separation of palladium (II).  

National Technical Information Service (NTIS)

Extraction performance of palladium (II) by sulphur containing extragents has unequivocally established their strong extraction ability toward this thiophilic soft metal. Hence a comprehensive investigative study was initiated by us to examine selective r...

J. P. Shukla S. R. Sawant Anil Kumar R. K. Singh

1995-01-01