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1

Separation of carrier free 151,152Tb produced in 16O irradiated lanthanum oxide matrix.  

PubMed

Charged particle activation of natural La2O3 with approximately 78.5 MeV 16O results in the formation of carrier free 151,152Tb isotopes in the matrix. The liquid cation exchanger, HDEHP, has effectively been utilised as an extractant in the quantitative separation of the activation products from the bulk target matrix of lanthanum oxide. PMID:10581678

Nayak, D; Lahiri, S; Ramaswami, A; Manohar, S B; Das, N R

1999-12-01

2

Lanthanum  

MedlinePLUS

Lanthanum is used to reduce blood levels of phosphate in patients with kidney disease. High levels of phosphate in the blood can cause bone problems. Lanthanum is in a class of medications called phosphate ...

3

Internal stress anisotropies induced by electric field in lanthanum modified PbTiO3 ceramics  

Microsoft Academic Search

Lanthanum modified lead titanate, (Pb0·775La0·15)TiO3 ceramics with a tetragonality of c\\/a = 1·024 were hot-pressed and the anisotropy of internal stress generated by applying a poling field were measured using a microindentation technique. In this specimen with a grain size of Gs=3·0 ?m, the internal stresses in the directions perpendicular and parallel to the DC poling field were 151 and

T. Yamamoto; H. Igarashi; K. Okazaki

1983-01-01

4

Metallic behavior of lanthanum disilicide  

NASA Technical Reports Server (NTRS)

Polycrystalline thin films of LaSi2 were prepared by reaction of sputter-deposited lanthanum layers with silicon wafers. Samples of the low-temperature tetragonal and the high-temperature orthorhombic phases were separately obtained. The room-temperature intrinsic resistivities were 24 and 57 microohm cm for the low- and high-temperature structures, respectively. Although lanthanum disilicide had been previously reported to be a semiconductor, classical metallic behavior was found for both phases.

Long, Robert G.; Bost, M. C.; Mahan, John E.

1988-01-01

5

Lanthanum Bromide Detectors for Safeguards Measurements  

SciTech Connect

Lanthanum bromide has advantages over other popular inorganic scintillator detectors. Lanthanum bromide offers superior resolution, and good efficiency when compared to sodium iodide and lanthanum chloride. It is a good alternative to high purity germanium detectors for some safeguards applications. This paper offers an initial look at lanthanum bromide detectors. Resolution of lanthanum bromide will be compared lanthanum chloride and sodium-iodide detectors through check source measurements. Relative efficiency and angular dependence will be looked at. Nuclear material spectra, to include plutonium and highly enriched uranium, will be compared between detector types.

Wright, J.

2011-05-25

6

Chlorination of lanthanum oxide.  

PubMed

The reactive system La(2)O(3)(s)-Cl(2)(g) was studied in the temperature range 260-950 °C. The reaction course was followed by thermogravimetry, and the solids involved were characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. The results showed that the reaction leads to the formation of solid LaOCl, and for temperatures above 850 °C, the lanthanum oxychloride is chlorinated, producing LaCl(3)(l). The formation of the oxychloride progresses through a nucleation and growth mechanism, and the kinetic analysis showed that at temperatures below 325 °C the system is under chemical control. The influence of diffusive processes on the kinetics of production of LaOCl was evaluated by studying the effect of the reactive gas flow rate, the mass of the sample, and the chlorine diffusion through the boundary layer surrounding the solid sample. The conversion curves were analyzed and fitted according to the Johnson-Mehl-Avrami description, and the reaction order with respect to the chlorine partial pressure was obtained by varying this partial pressure between 10 and 70 kPa. The rate equation was obtained, which includes the influence of the temperature, chlorine partial pressure, and reaction degree. PMID:22280490

Gaviría, Juan P; Navarro, Lucas G; Bohé, Ana E

2012-03-01

7

Preparation of porous lanthanum phosphate with templates  

SciTech Connect

Malonic acid, propionic acid, glycine, n-butylamine, and urea were added to the preparation of lanthanum phosphate from lanthanum nitrate and phosphoric acid solutions. All additives were taken into lanthanum phosphate particles. The additives that have a basic site were easy to contain in precipitates. The addition of templates improved the specific surface area of lanthanum phosphate. The amount of pore, with radius smaller than 4 nm, increased with the addition of templates. The remained additives had influence on the acidic properties of lanthanum phosphate.

Onoda, Hiroaki, E-mail: onoda@kpu.ac.jp [Department of Informatics and Environmental Sciences, Faculty of Life and Environmental Sciences, Kyoto Prefectural University, 1-5, Shimogamo Nakaragi-cyo, Sakyo-ku, Kyoto 606-8522 (Japan); Ishima, Yuya [Department of Applied Chemistry, Faculty of Life Sciences, Ritsumeikan University, 1-1-1, Nojihigashi, Kusatsu, Shiga 525-8577 (Japan); Takenaka, Atsushi [Department of Materials Science, Yonago National College of Technology, 4448, Hikona-cho, Yonago, Tottori 683-8502 (Japan); Tanaka, Isao [Department of Materials Science and Engineering, Faculty of Engineering, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501 (Japan)

2009-08-05

8

Lanthanum carbide-based porous materials from carburization of lanthanum oxide and lanthanum oxalate mixtures  

NASA Astrophysics Data System (ADS)

Porous lanthanum carbide (LaC 2) based materials were prepared from lanthanum oxalate (La 2(C 2O 4) 3), lanthanum oxide (La 2O 3) and graphite mixtures. The molar ratio between La 2O 3 and La 2(C 2O 4) 3 was varied in order to detect the effect of starting mixtures on the porosity of the products. Samples structure and morphology were investigated by means of scanning electron microscopy, equipped with the probe for elemental analysis, (SEM-EDS) and X-ray diffraction spectrometry (XRD). As for the porosity characterization, the amount of total porosity was derived from the comparison between the theoretical and the measured density values, whereas a thorough investigation on the amount of open porosity and pore size distribution was carried out by means of Mercury Intrusion Porosimetry, after carburization and sintering. Emissivity measurements were performed upon carburization and sintering in order to verify the effect of porosity on emissivity values.

Biasetto, L.; Zanonato, P.; Carturan, S.; Di Bernardo, P.; Colombo, P.; Andrighetto, A.; Prete, G.

2008-08-01

9

Ames Lab 101: Lanthanum Decanting  

ScienceCinema

Ames Laboratory scientist Trevor Riedemann explains the process that allows Ames Laboratory to produce some of the purest lanthanum in the world. This and other high-purity rare-earth elements are used to create alloys used in various research projects and play a crucial role in the Planck satellite mission.

Riedemann, Trevor

2012-08-29

10

Ames Lab 101: Lanthanum Decanting  

SciTech Connect

Ames Laboratory scientist Trevor Riedemann explains the process that allows Ames Laboratory to produce some of the purest lanthanum in the world. This and other high-purity rare-earth elements are used to create alloys used in various research projects and play a crucial role in the Planck satellite mission.

Riedemann, Trevor

2010-01-01

11

40 CFR 721.10601 - Lanthanum lead titanium zirconium oxide.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Lanthanum lead titanium zirconium oxide. 721.10601 Section...Substances § 721.10601 Lanthanum lead titanium zirconium oxide. (a) Chemical substance...substance identified as lanthanum lead titanium zirconium oxide (PMN...

2013-07-01

12

40 CFR 721.10601 - Lanthanum lead titanium zirconium oxide.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Lanthanum lead titanium zirconium oxide. 721.10601 Section...Substances § 721.10601 Lanthanum lead titanium zirconium oxide. (a) Chemical substance...substance identified as lanthanum lead titanium zirconium oxide (PMN...

2014-07-01

13

MAGNETISM AND ELECTRON TRANSPORT IN MAGNETORESISTIVE LANTHANUM CALCIUM  

E-print Network

MAGNETISM AND ELECTRON TRANSPORT IN MAGNETORESISTIVE LANTHANUM CALCIUM MANGANITE A DISSERTATION with the large negative magnetoresistance found in lanthanum calcium manganite. Such large magnetoresistances 4, the intrinsic magnetic and electron transport properties of lanthanum calcium manganite

14

Rapid Synthesis of Nonstoichiometric Lanthanum Sulfide  

NASA Technical Reports Server (NTRS)

New process relatively fast and simple. Improved method of synthesizing nonstoichiometric lanthanum sulfide faster and simpler. Product purer because some of prior sources of contamination eliminated.

Matsuda, S.; Shapiro, E.; Danielson, L.; Hardister, H.

1987-01-01

15

Thermoelectric Properties of Lanthanum Sulfide  

NASA Technical Reports Server (NTRS)

Report describes measurement of Seebeck coefficient, electrical resistivity, thermal conductivity, and Hall effect in gamma-phase lanthanum sulfide with composition of La3-x S4. Results of study, part of search for high-temperature thermoelectric energy-conversion materials, indicate this sulfide behaves like extrinsic semiconductor over temperature range of 300 to 1,400 K, with degenerate carrier concentration controlled by stoichiometric ratio of La to S.

Wood, C.; Lockwood, R.; Parker, J. B.; Zoltan, A.; Zoltan, L. D.; Danielson, L.; Raag, V.

1987-01-01

16

19 CFR 151.30 - Sugar closets.  

Code of Federal Regulations, 2012 CFR

... 2012-04-01 2012-04-01 false Sugar closets. 151.30 Section 151.30 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.30 Sugar closets. Sugar closets for...

2012-04-01

17

19 CFR 151.30 - Sugar closets.  

Code of Federal Regulations, 2014 CFR

... 2014-04-01 2014-04-01 false Sugar closets. 151.30 Section 151.30 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.30 Sugar closets. Sugar closets for...

2014-04-01

18

19 CFR 151.30 - Sugar closets.  

Code of Federal Regulations, 2013 CFR

... 2013-04-01 2013-04-01 false Sugar closets. 151.30 Section 151.30 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.30 Sugar closets. Sugar closets for...

2013-04-01

19

28 CFR 115.151 - Detainee reporting.  

Code of Federal Regulations, 2014 CFR

...Detainee reporting. 115.151 Section 115.151 Judicial Administration DEPARTMENT OF JUSTICE (CONTINUED) PRISON RAPE ELIMINATION ACT NATIONAL STANDARDS Standards for Lockups Reporting § 115.151 Detainee reporting. (a)...

2014-07-01

20

19 CFR 151.52 - Sampling procedures.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Sampling procedures. 151.52 Section 151...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Metal-Bearing...Metal-Bearing Materials § 151.52 Sampling procedures. (a) Commercial...

2010-04-01

21

19 CFR 151.51 - Sampling requirements.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Sampling requirements. 151.51 Section 151...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Metal-Bearing...Metal-Bearing Materials § 151.51 Sampling requirements. (a)...

2010-04-01

22

22 CFR 151.6 - Authorized insurer.  

Code of Federal Regulations, 2012 CFR

...false Authorized insurer. 151.6 Section 151.6 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.6 Authorized insurer. The...

2012-04-01

23

22 CFR 151.6 - Authorized insurer.  

Code of Federal Regulations, 2010 CFR

...false Authorized insurer. 151.6 Section 151.6 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.6 Authorized insurer. The...

2010-04-01

24

22 CFR 151.6 - Authorized insurer.  

Code of Federal Regulations, 2014 CFR

...false Authorized insurer. 151.6 Section 151.6 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.6 Authorized insurer. The...

2014-04-01

25

22 CFR 151.6 - Authorized insurer.  

Code of Federal Regulations, 2013 CFR

...false Authorized insurer. 151.6 Section 151.6 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.6 Authorized insurer. The...

2013-04-01

26

22 CFR 151.6 - Authorized insurer.  

Code of Federal Regulations, 2011 CFR

...false Authorized insurer. 151.6 Section 151.6 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.6 Authorized insurer. The...

2011-04-01

27

Field free, directly heated lanthanum boride cathode  

DOEpatents

A directly heated cylindrical lanthanum boride cathode assembly is disclosed which minimizes generation of magnetic fields which would interfere with electron emission from the cathode. The cathode assembly comprises a lanthanum boride cylinder in electrical contact at one end with a central support shaft which functions as one electrode to carry current to the lanthanum boride cylinder and in electrical contact, at its opposite end with a second electrode which is coaxially position around the central support shaft so that magnetic fields generated by heater current flowing in one direction through the central support shaft are cancelled by an opposite magnetic field generated by current flowing through the lanthanum boride cylinder and the coaxial electrode in a direction opposite to the current flow in the central shaft.

Leung, Ka-Ngo (Hercules, CA); Moussa, David (San Francisco, CA); Wilde, Stephen B. (Pleasant Hill, CA)

1991-01-01

28

Field free, directly heated lanthanum boride cathode  

DOEpatents

A directly heated cylindrical lanthanum boride cathode assembly is disclosed which minimizes generation of magnetic field which would interfere with electron emission from the cathode. The cathode assembly comprises a lanthanum boride cylinder in electrical contact at one end with a central support shaft which functions as one electrode to carry current to the lanthanum boride cylinder and in electrical contact, at its opposite end with a second electrode which is coaxially position around the central support shaft so that magnetic fields generated by heater current flowing in one direction through the central support shaft are cancelled by an opposite magnetic field generated by current flowing through the lanthanum boride cylinder and the coaxial electrode in a direction opposite to the current flow in the central shaft.

Leung, Ka-Ngo; Moussa, D.; Wilde, S.B.

1987-02-02

29

Development of lanthanum ferrite SOFC cathodes  

Microsoft Academic Search

A number of studies have been conducted concerning compositional\\/microstructural modifications of a Sr-doped lanthanum ferrite (LSF) cathode and protective Sm-doped ceria (SDC) layer in an anode supported solid oxide fuel cell (SOFC). Emphasis was placed on achieving enhanced low temperature (700–800°C) performance, and long-term cell stability. Investigations involved manipulation of the lanthanum ferrite chemistry, addition of noble metal oxygen reduction

Steve P. Simner; Jeff F. Bonnett; Nathan L. Canfield; Kerry D. Meinhardt; Jayne P. Shelton; Vince L. Sprenkle; Jeffry W. Stevenson

2003-01-01

30

Compact lanthanum hexaboride hollow cathode.  

PubMed

A compact lanthanum hexaboride hollow cathode has been developed for space applications where size and mass are important and research and industrial applications where access for implementation might be limited. The cathode design features a refractory metal cathode tube that is easily manufactured, mechanically captured orifice and end plates to eliminate expensive e-beam welding, graphite sleeves to provide a diffusion boundary to protect the LaB6 insert from chemical reactions with the refractory metal tube, and several heater designs to provide long life. The compact LaB(6) hollow cathode assembly including emitter, support tube, heater, and keeper electrode is less than 2 cm in diameter and has been fabricated in lengths of 6-15 cm for different applications. The cathode has been operated continuously at discharge currents of 5-60 A in xenon. Slightly larger diameter versions of this design have operated at up to 100 A of discharge current. PMID:20815605

Goebel, Dan M; Watkins, Ronald M

2010-08-01

31

Ris-R-1242(EN) Lanthanum Manganate Based Cathodes  

E-print Network

Risø-R-1242(EN) Lanthanum Manganate Based Cathodes for Solid Oxide Fuel Cells Mette Juhl Jørgensen to minimise the voltage drop in the cathode. The electrodes contained a composite layer made from lanthanum

32

Localized holes in superconducting lanthanum cuprate P. C. Hammel  

E-print Network

Localized holes in superconducting lanthanum cuprate P. C. Hammel Los Alamos National Laboratory the existence of a second, anomalous copper site in lanthanum cuprate whose character is independent in Sr- and O-doped lanthanum cuprate, yet copper NQR spectra reveal two 63 Cu lines see Fig. 1 and Refs

Hammel, Chris

33

Determination of lanthanum by flame photometric titration.  

PubMed

The flame emission of lanthanum at 560 mmu decreases linearly with phosphate concentration until a 1:1 molar ratio is reached, and then remains practically constant. Lanthanum can be titrated with phosphate, the equivalence point being detected from the change in emission intensity. Errors due to consumption of solution by the atomizer can be kept low by using short spraying times and low galvanometer damping. The average error is about -1% for 0.1M solutions and less than -5% for 0.01M. The method gives good results in the presence of titanium(III), zirconium, thorium and aluminium but cerium(III) and yttrium seriously interfere. PMID:18960392

Svehla, G; Slevin, P J

1968-09-01

34

Development of Lanthanum Ferrite SOFC Cathodes  

SciTech Connect

A number of studies have been conducted concerning compositional/microstructural modifications of a Sr-doped lanthanum ferrite (LSF) cathode and protective Sm-doped ceria (SDC) layer in an anode supported solid oxide fuel cell (SOFC). Emphasis was placed on achieving enhanced low temperature (700-800 degrees C) performance, and long-term cell stability. Investigations involved manipulation of the lanthanum ferrite chemistry, addition of noble metal oxygen reduction catalysts, incorporation of active cathode layer compositions containing Co, Fe and higher Sr contents, and attempts to optimize the ceria barrier layer between the LSF cathode and YSZ electrolyte.

Simner, Steve P.; Bonnett, Jeff F.; Canfield, Nathan L.; Meinhardt, Kerry D.; Shelton, Jayne P.; Sprenkle, Vince L.; Stevenson, Jeffry W.

2003-01-01

35

14 CFR Appendix C to Part 151 - Appendix C to Part 151  

Code of Federal Regulations, 2010 CFR

...3 2010-01-01 2010-01-01 false Appendix C to Part 151 C Appendix C to Part 151 Aeronautics and Space FEDERAL...FEDERAL AID TO AIRPORTS Pt. 151, App. C Appendix C to Part 151 There is set forth below...

2010-01-01

36

14 CFR Appendix B to Part 151 - Appendix B to Part 151  

Code of Federal Regulations, 2010 CFR

...3 2010-01-01 2010-01-01 false Appendix B to Part 151 B Appendix B to Part 151 Aeronautics and Space FEDERAL...FEDERAL AID TO AIRPORTS Pt. 151, App. B Appendix B to Part 151 There is set forth below...

2010-01-01

37

14 CFR Appendix G to Part 151 - Appendix G to Part 151  

Code of Federal Regulations, 2010 CFR

...3 2010-01-01 2010-01-01 false Appendix G to Part 151 G Appendix G to Part 151 Aeronautics and Space FEDERAL...FEDERAL AID TO AIRPORTS Pt. 151, App. G Appendix G to Part 151 There is set forth below...

2010-01-01

38

14 CFR Appendix E to Part 151 - Appendix E to Part 151  

Code of Federal Regulations, 2010 CFR

...3 2010-01-01 2010-01-01 false Appendix E to Part 151 E Appendix E to Part 151 Aeronautics and Space FEDERAL...FEDERAL AID TO AIRPORTS Pt. 151, App. E Appendix E to Part 151 There is set forth below...

2010-01-01

39

14 CFR Appendix D to Part 151 - Appendix D to Part 151  

Code of Federal Regulations, 2010 CFR

...3 2010-01-01 2010-01-01 false Appendix D to Part 151 D Appendix D to Part 151 Aeronautics and Space FEDERAL...FEDERAL AID TO AIRPORTS Pt. 151, App. D Appendix D to Part 151 There is set forth below...

2010-01-01

40

14 CFR Appendix B to Part 151 - Appendix B to Part 151  

Code of Federal Regulations, 2014 CFR

...Part 151 B Appendix B to Part 151 Aeronautics and Space...151, App. B Appendix B to Part 151 There is set forth...Specific site preparation (not a part of an over-all site preparation...parking facilities for passenger automobiles. (c) Industrial and...

2014-01-01

41

46 CFR 151.03-39 - Ocean.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Ocean. 151.03-39 Section 151.03-39...CARGOES Definitions § 151.03-39 Ocean. A designation for all vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20...

2010-10-01

42

46 CFR 151.03-39 - Ocean.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Ocean. 151.03-39 Section 151.03-39...CARGOES Definitions § 151.03-39 Ocean. A designation for all vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20...

2013-10-01

43

46 CFR 151.03-39 - Ocean.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Ocean. 151.03-39 Section 151.03-39...CARGOES Definitions § 151.03-39 Ocean. A designation for all vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20...

2011-10-01

44

46 CFR 151.03-39 - Ocean.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Ocean. 151.03-39 Section 151.03-39...CARGOES Definitions § 151.03-39 Ocean. A designation for all vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20...

2012-10-01

45

46 CFR 151.03-39 - Ocean.  

Code of Federal Regulations, 2014 CFR

...2014-10-01 2014-10-01 false Ocean. 151.03-39 Section 151.03-39...CARGOES Definitions § 151.03-39 Ocean. A designation for all vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20...

2014-10-01

46

19 CFR 151.44 - Storage tanks.  

Code of Federal Regulations, 2014 CFR

... false Storage tanks. 151.44 Section 151.44 Customs Duties U.S. CUSTOMS...and Petroleum Products § 151.44 Storage tanks. (a) Plans and...certified shall be kept on file at the plant of the oil company and...

2014-04-01

47

19 CFR 151.44 - Storage tanks.  

Code of Federal Regulations, 2013 CFR

... false Storage tanks. 151.44 Section 151.44 Customs Duties U.S. CUSTOMS...and Petroleum Products § 151.44 Storage tanks. (a) Plans and...certified shall be kept on file at the plant of the oil company and...

2013-04-01

48

19 CFR 151.44 - Storage tanks.  

Code of Federal Regulations, 2012 CFR

... false Storage tanks. 151.44 Section 151.44 Customs Duties U.S. CUSTOMS...and Petroleum Products § 151.44 Storage tanks. (a) Plans and...certified shall be kept on file at the plant of the oil company and...

2012-04-01

49

19 CFR 151.44 - Storage tanks.  

Code of Federal Regulations, 2011 CFR

... false Storage tanks. 151.44 Section 151.44 Customs Duties U.S. CUSTOMS...and Petroleum Products § 151.44 Storage tanks. (a) Plans and...certified shall be kept on file at the plant of the oil company and...

2011-04-01

50

Adsorption of lanthanum to goethite in the presence of gluconate  

SciTech Connect

Adsorption of Lanthanum to Goethite in the Presence of Gluconic Acid L. C. HULL,1 S. E. PEPPER2 AND S. B. CLARK2 1Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID (hulllc@inel.gov) 2Washington State University, Pullman, WA (spepper@wsu.edu), (s_clark@wsu.edu) Lanthanide and trivalent-actinide elements in radioactive waste can pose risks to humans and ecological systems for many years. Organic complexing agents, from natural organic matter or the degradation of waste package components, can alter the mobility of these elements. We studied the effect of gluconic acid, as an analogue for cellulose degradation products, on the adsorption of lanthanum, representing lanthanide and trivalent-actinide elments, to goethite, representing natural iron minearals and degradation products of waste packages. Batch pH adsorption edge experiments were conducted with lanthanum alone, and with lanthanum and gluconate at a 1:1 mole ratio. Lanthanum concentrations studied were 0.1, 1, and 10 mM, covering a range from 10% to 1000% of the calculated available adsorption sites on goethite. In the absence of gluconate, lanthanum was primarily present in solution as free lanthanum ion. With gluconate present, free lanthanum concentration in solution decreased with increasing pH as step-wise deprotonation of the gluconate molecule increased the fraction lanthanum complexed with gluconate. Adsorption to the goethite surface was represented with the diffuse double-layer model. The number of adsorption sites and the intrinsic binding constants for the surface complexes were estimated from the pH adsorption edge data using the computer code FITEQL 4.0. Two surface reactions were used to fit the adsorption data in the absence of gluconate. A strong binding site with no proton release and a much higher concentration of weak binding sites with release of two protons per lanthanum adsorbed. The adsorption of lanthanum was not measurably affected by the presence of gluconate below pH 7. At pH values above 7, however, gluconate doubled the maximum amount of lanthanum adsorbed. This was modeled by including a ternary complex with a lanthanum-gluconate complex binding to a lanthanum bound on the surface. No spectroscopic data were obtained to verify the identify of the surface complexes. The presence of gluconate did not appear to affect the formation of solid lanthanum hydroxide at elevated pH and millimolar lanthanum concentrations. The effect of organic molecules on the mobility of lanthanides and trivalent-actinides cannot be simply described with equilibrium thermodynamic models based on currently available data.

Hull, Laurence C.; Sarah Pepper; Sue Clark

2005-05-01

51

Effects of lanthanum in cellular systems  

Microsoft Academic Search

Lanthanum belongs to the group of elements known as “lanthanons,” which also includes cerium, europium, promethium, and thulium.\\u000a It is the most electropositive element of the rare earth group, is uniformly trivalent, and is similar in its chemical properties\\u000a to the alkaline earth elements. The effects of this element and its compounds on cellular systems are of considerable interest\\u000a because

Tandra Das; Archana Sharma; Geeta Talukder

1988-01-01

52

14 CFR Appendix E to Part 151 - Appendix E to Part 151  

Code of Federal Regulations, 2013 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Loading ramps...or both. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Aprons...

2013-01-01

53

14 CFR Appendix D to Part 151 - Appendix D to Part 151  

Code of Federal Regulations, 2011 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Taxiway providing...tee hangars. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Taxiways...

2011-01-01

54

14 CFR Appendix D to Part 151 - Appendix D to Part 151  

Code of Federal Regulations, 2013 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Taxiway providing...tee hangars. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Taxiways...

2013-01-01

55

14 CFR Appendix E to Part 151 - Appendix E to Part 151  

Code of Federal Regulations, 2012 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Loading ramps...or both. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Aprons...

2012-01-01

56

14 CFR Appendix D to Part 151 - Appendix D to Part 151  

Code of Federal Regulations, 2012 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Taxiway providing...tee hangars. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Taxiways...

2012-01-01

57

14 CFR Appendix E to Part 151 - Appendix E to Part 151  

Code of Federal Regulations, 2014 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Loading ramps...or both. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Aprons...

2014-01-01

58

14 CFR Appendix E to Part 151 - Appendix E to Part 151  

Code of Federal Regulations, 2011 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Loading ramps...or both. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Aprons...

2011-01-01

59

14 CFR Appendix D to Part 151 - Appendix D to Part 151  

Code of Federal Regulations, 2014 CFR

...this chapter: Typical Eligible Items 1. Basic types of pavement listed as eligible under § 151.77. 2. Taxiway providing...tee hangars. Typical Ineligible Items 1. Basic types of pavement listed as ineligible under § 151.77. 2. Taxiways...

2014-01-01

60

14 CFR 151.71 - Applicability.  

Code of Federal Regulations, 2014 CFR

...TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.71 Applicability. (a) This subpart prescribes programming and design and construction standards for projects under the...

2014-01-01

61

14 CFR 151.71 - Applicability.  

Code of Federal Regulations, 2010 CFR

...TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.71 Applicability. (a) This subpart prescribes programming and design and construction standards for projects under the...

2010-01-01

62

14 CFR 151.71 - Applicability.  

Code of Federal Regulations, 2013 CFR

...TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.71 Applicability. (a) This subpart prescribes programming and design and construction standards for projects under the...

2013-01-01

63

14 CFR 151.71 - Applicability.  

Code of Federal Regulations, 2011 CFR

...TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.71 Applicability. (a) This subpart prescribes programming and design and construction standards for projects under the...

2011-01-01

64

14 CFR 151.71 - Applicability.  

Code of Federal Regulations, 2012 CFR

...TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.71 Applicability. (a) This subpart prescribes programming and design and construction standards for projects under the...

2012-01-01

65

Atomic layer deposition of lanthanum aluminum oxide nano-laminates for electrical applications  

E-print Network

Atomic layer deposition of lanthanum aluminum oxide nano-laminates for electrical applications 12 March 2004; published online 3 May 2004 Lanthanum aluminum oxide thin films were grown by atomic layer deposition from a lanthanum precursor, tris(N,N -diisopropylacetamidinato lanthanum (La(i PrAMD)3

66

Atomic Layer Deposition of Lanthanum-Based Ternary Oxides Hongtao Wang,a  

E-print Network

Atomic Layer Deposition of Lanthanum-Based Ternary Oxides Hongtao Wang,a Jun-Jieh Wang,b Roy Gordon 02138, USA c Rohm and Haas Electronic Materials, North Andover, Massachusetts 01845, USA LanthanumV , and low leakage.3 Recent reports show that lanthanum-based ternary ox- ides, such as lanthanum scandate La

67

14 CFR 151.99 - Modifications of programming standards.  

Code of Federal Regulations, 2014 CFR

...2014-01-01 false Modifications of programming standards. 151.99 Section 151...AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.99 Modifications of programming standards. The Director,...

2014-01-01

68

14 CFR 151.99 - Modifications of programming standards.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Modifications of programming standards. 151.99 Section 151...AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.99 Modifications of programming standards. The Director,...

2010-01-01

69

14 CFR 151.99 - Modifications of programming standards.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Modifications of programming standards. 151.99 Section 151...AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.99 Modifications of programming standards. The Director,...

2011-01-01

70

14 CFR 151.99 - Modifications of programming standards.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Modifications of programming standards. 151.99 Section 151...AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.99 Modifications of programming standards. The Director,...

2013-01-01

71

14 CFR 151.99 - Modifications of programming standards.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Modifications of programming standards. 151.99 Section 151...AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.99 Modifications of programming standards. The Director,...

2012-01-01

72

19 CFR 151.25 - Mixing classes of sugar.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Mixing classes of sugar. 151.25 Section 151.25 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.25 Mixing classes of sugar. No regulations relative to the...

2012-04-01

73

19 CFR 151.24 - Unlading facilities for bulk sugar.  

Code of Federal Regulations, 2014 CFR

... false Unlading facilities for bulk sugar. 151.24 Section 151.24 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.24 Unlading facilities for bulk sugar. When dutiable sugar is to be...

2014-04-01

74

19 CFR 151.25 - Mixing classes of sugar.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Mixing classes of sugar. 151.25 Section 151.25 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.25 Mixing classes of sugar. No regulations relative to the...

2014-04-01

75

19 CFR 151.25 - Mixing classes of sugar.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Mixing classes of sugar. 151.25 Section 151.25 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.25 Mixing classes of sugar. No regulations relative to the...

2013-04-01

76

19 CFR 151.24 - Unlading facilities for bulk sugar.  

Code of Federal Regulations, 2013 CFR

... false Unlading facilities for bulk sugar. 151.24 Section 151.24 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.24 Unlading facilities for bulk sugar. When dutiable sugar is to be...

2013-04-01

77

19 CFR 151.24 - Unlading facilities for bulk sugar.  

Code of Federal Regulations, 2012 CFR

... false Unlading facilities for bulk sugar. 151.24 Section 151.24 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.24 Unlading facilities for bulk sugar. When dutiable sugar is to be...

2012-04-01

78

46 CFR 151.03-23 - Flame arrestor.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Flame arrestor. 151.03-23 Section 151...CARGOES Definitions § 151.03-23 Flame arrestor. Any device or assembly...type used for preventing the passage of flames into enclosed...

2010-10-01

79

46 CFR 108.151 - Two means required.  

Code of Federal Regulations, 2011 CFR

...108.151 Section 108.151 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Construction and Arrangement Means of Escape § 108.151 Two means...

2011-10-01

80

14 CFR 151.125 - Allowable advance planning costs.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Allowable advance planning costs. 151.125 Section 151...AIRPORTS Rules and Procedures for Advance Planning and Engineering Proposals § 151.125 Allowable advance planning costs. (a) The United...

2010-01-01

81

19 CFR 151.67 - Sampling by importer.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Sampling by importer. 151.67 Section 151...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.67 Sampling by importer. The importer may...

2010-04-01

82

19 CFR 151.83 - Method of sampling.  

Code of Federal Regulations, 2010 CFR

... 2010-04-01 false Method of sampling. 151.83 Section 151.83 Customs...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Cotton § 151.83 Method of sampling. For determining the staple...

2010-04-01

83

27 CFR 17.151 - Use of distilled spirits.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Use of distilled spirits. 17.151 Section 17.151 Alcohol...LIQUORS DRAWBACK ON TAXPAID DISTILLED SPIRITS USED IN MANUFACTURING NONBEVERAGE PRODUCTS Claims for Drawback Spirits Subject to Drawback § 17.151...

2010-04-01

84

49 CFR 1.51 - Delegations to Federal Transit Administrator.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Delegations to Federal Transit Administrator. 1.51 Section 1.51 ...Delegations § 1.51 Delegations to Federal Transit Administrator. The Federal Transit Administrator is delegated authority to...

2011-10-01

85

49 CFR 1.51 - Delegations to Federal Transit Administrator.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Delegations to Federal Transit Administrator. 1.51 Section 1.51 ...Delegations § 1.51 Delegations to Federal Transit Administrator. The Federal Transit Administrator is delegated authority to...

2010-10-01

86

22 CFR 151.3 - Types of insurance coverage required.  

Code of Federal Regulations, 2013 CFR

...insurance coverage required. 151.3 Section 151.3 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.3 Types of insurance coverage...

2013-04-01

87

22 CFR 151.3 - Types of insurance coverage required.  

Code of Federal Regulations, 2011 CFR

...insurance coverage required. 151.3 Section 151.3 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.3 Types of insurance coverage...

2011-04-01

88

22 CFR 151.3 - Types of insurance coverage required.  

Code of Federal Regulations, 2014 CFR

...insurance coverage required. 151.3 Section 151.3 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.3 Types of insurance coverage...

2014-04-01

89

22 CFR 151.3 - Types of insurance coverage required.  

Code of Federal Regulations, 2010 CFR

...insurance coverage required. 151.3 Section 151.3 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.3 Types of insurance coverage...

2010-04-01

90

22 CFR 151.3 - Types of insurance coverage required.  

Code of Federal Regulations, 2012 CFR

...insurance coverage required. 151.3 Section 151.3 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.3 Types of insurance coverage...

2012-04-01

91

46 CFR 151.50-6 - Motor fuel antiknock compounds.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Motor fuel antiknock compounds. 151.50-6 Section 151.50-6... § 151.50-6 Motor fuel antiknock compounds. When transporting motor fuel antiknock compounds containing tetraethyl lead and...

2010-10-01

92

46 CFR 151.50-6 - Motor fuel antiknock compounds.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Motor fuel antiknock compounds. 151.50-6 Section 151.50-6... § 151.50-6 Motor fuel antiknock compounds. When transporting motor fuel antiknock compounds containing tetraethyl lead and...

2011-10-01

93

The Exchange Parameters in Lanthanum Manganites  

E-print Network

The spin-wave spectrum in the metallic ferromagnetic lantha-num cubic manganites was investigated. The interactions with four coordination spheres (32 neighbors) were taken into ac-count. The Heisenberg superexchange between all manganese ions as well as double exchange between the manganese ions with different valence were under consideration. The obtained magnon spectrum permits to investigate dispersion relations along an any crystallographic directions. This possibility was used for the numerical evaluation of the exchange parameters in the compounds La0.75Ca0.25MnO3 and La0.70Ca0.30MnO3 from the inelastic neutron scattering data.

B. V. Karpenko; A. V. Kuznetzov

2008-05-20

94

Precipitation synthesis and sintering of lanthanum doped yttria transparent ceramics  

NASA Astrophysics Data System (ADS)

Co-precipitation method was used to prepare lanthanum doped yttria nanopowder. After calcinations at 1000 °C, lanthanum ion entered into the yttria lattice. Effect of lanthanum oxide as an equal valent additive on the sintering of yttria was investigated. The addition of lanthanum ions was found to be effective for promoting the densification process during sintering, and make it easier for the ceramic to be transparency at moderate 1700 °C in vacuum. After sintering at 1500 and 1700 °C for 4 h in vacuum, translucent and transparent poly-crystalline ceramics with uniform lanthanum distribution was obtained, respectively. The grain size (75 ± 13 ?m) of 7% lanthanum doped yttria sintered at 1700 °C was about 10 times bigger than that sintered at 1500 °C (7.6 ± 1.9 ?m). The refractive indices of lanthanum ion doped sample were higher than undoped sample in vis-UV light range. The in-line transmittance of 2 mm thick samples sintered at 1700 °C reached 74% at 800 nm (89.7% of theoretical transmittance) wavelength.

Huang, Yihua; Jiang, Dongliang; Zhang, Jingxian; Lin, Qingling

2009-08-01

95

46 CFR 151.50-30 - Compressed gases.  

Code of Federal Regulations, 2011 CFR

...not be less than five-sixteenths inch. (g) The special requirements for ammonia (anhydrous) in § 151.50-32, for argon in § 151.50-36, for chlorine in § 151.50-31, for nitrogen in § 151.50-36, and for vinyl chloride in §...

2011-10-01

96

46 CFR 151.50-30 - Compressed gases.  

Code of Federal Regulations, 2012 CFR

...not be less than five-sixteenths inch. (g) The special requirements for ammonia (anhydrous) in § 151.50-32, for argon in § 151.50-36, for chlorine in § 151.50-31, for nitrogen in § 151.50-36, and for vinyl chloride in §...

2012-10-01

97

46 CFR 151.50-30 - Compressed gases.  

Code of Federal Regulations, 2013 CFR

...not be less than five-sixteenths inch. (g) The special requirements for ammonia (anhydrous) in § 151.50-32, for argon in § 151.50-36, for chlorine in § 151.50-31, for nitrogen in § 151.50-36, and for vinyl chloride in §...

2013-10-01

98

The energetics of lanthanum tantalate materials  

SciTech Connect

Lanthanum tantalates are important refractory materials with application in photocatalysis, solid oxide fuel cells, and phosphors. Soft-chemical synthesis utilizing the Lindqvist ion, [Ta{sub 6}O{sub 19}]{sup 8-}, has yielded a new phase, La{sub 2}Ta{sub 2}O{sub 7}(OH){sub 2}. Using the hydrated phase as a starting material, a new lanthanum orthotantalate polymorph was formed by heating to 850 {sup o}C, which converts to a previously reported LaTaO{sub 4} polymorph at 1200 {sup o}C. The stabilities of La{sub 2}Ta{sub 2}O{sub 7}(OH){sub 2} (LaTa-OH), the intermediate LaTaO{sub 4} polymorph (LaTa-850), and the high temperature phase (LaTa-1200) were investigated using high-temperature oxide melt solution calorimetry. The enthalpy of formation from the oxides were calculated from the enthalpies of drop solution to be -87.1{+-}9.6, -94.9{+-}8.8, and -93.1{+-}8.7 kJ/mol for LaTa-OH, LaTa-850, and LaTa-1200, respectively. These results indicate that the intermediate phase, LaTa-850, is the most stable. This pattern of energetics may be related to cation-cation repulsion of the tantalate cations. We also investigated possible LnTaO{sub 4} and Ln{sub 2}Ta{sub 2}O{sub 7}(OH){sub 2} analogues of Ln=Pr, Nd to examine the relationship between cation size and the resulting phases. - Graphical abstract: The energetics of three lanthanum tantalates were investigated by the high-temperature oxide melt solution calorimetry. The enthalpies of formation from the oxides were calculated from the enthalpies of drop solution to be -87.1{+-}9.6, -94.9{+-}8.8, and -93.1{+-}8.7 kJ/mol for La{sub 2}Ta{sub 2}O{sub 7}(OH){sub 2}, LaTaO{sub 4} (850 {sup o}C), and LaTaO{sub 4} (1200 {sup o}C), respectively. These results indicate that the intermediate phase, LaTaO{sub 4} (850 {sup o}C), is the most stable in energy. Display Omitted

Forbes, Tori Z., E-mail: tmforbes@ucdavis.ed [Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, CA 95616 (United States); Nyman, May, E-mail: mdnyman@sandia.go [Sandia National Laboratory, POB 5800, Albuquerque, NM 87185 (United States); Rodriguez, Mark A., E-mail: marodri@sandia.go [Sandia National Laboratory, POB 5800, Albuquerque, NM 87185 (United States); Navrotsky, Alexandra, E-mail: anavrotsky@ucdavis.ed [Peter A. Rock Thermochemistry Laboratory and NEAT ORU, University of California at Davis, Davis, CA 95616 (United States)

2010-11-15

99

14 CFR 151.83 - Aprons.  

Code of Federal Regulations, 2011 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.83 Aprons. (a) The construction, alteration, and repair of aprons are eligible...

2011-01-01

100

14 CFR 151.81 - Taxiway paving.  

Code of Federal Regulations, 2010 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.81 Taxiway paving. (a) The construction, alteration, and repair of taxiways needed...

2010-01-01

101

14 CFR 151.83 - Aprons.  

Code of Federal Regulations, 2010 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.83 Aprons. (a) The construction, alteration, and repair of aprons are eligible...

2010-01-01

102

14 CFR 151.81 - Taxiway paving.  

Code of Federal Regulations, 2012 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.81 Taxiway paving. (a) The construction, alteration, and repair of taxiways needed...

2012-01-01

103

14 CFR 151.83 - Aprons.  

Code of Federal Regulations, 2014 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.83 Aprons. (a) The construction, alteration, and repair of aprons are eligible...

2014-01-01

104

14 CFR 151.83 - Aprons.  

Code of Federal Regulations, 2012 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.83 Aprons. (a) The construction, alteration, and repair of aprons are eligible...

2012-01-01

105

19 CFR 151.21 - Definitions.  

Code of Federal Regulations, 2012 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.21 Definitions...1202): (a) Degree. “Degree” or “sugar degree” means an International Sugar Degree as determined by polarimetric test...

2012-04-01

106

19 CFR 151.21 - Definitions.  

Code of Federal Regulations, 2014 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.21 Definitions...1202): (a) Degree. “Degree” or “sugar degree” means an International Sugar Degree as determined by polarimetric test...

2014-04-01

107

19 CFR 151.21 - Definitions.  

Code of Federal Regulations, 2013 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.21 Definitions...1202): (a) Degree. “Degree” or “sugar degree” means an International Sugar Degree as determined by polarimetric test...

2013-04-01

108

14 CFR 151.131 - Forms.  

Code of Federal Regulations, 2014 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.131 Forms. ...of obtaining an advance planning and engineering grant are as follows: (a) Advance...developed, and the estimate of planning and engineering costs. (2) Part...

2014-01-01

109

33 CFR 151.1502 - Applicability.  

Code of Federal Regulations, 2010 CFR

...DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID...Nonindigenous Species in the Great Lakes and Hudson River § 151.1502 Applicability...George Washington Bridge on the Hudson River, regardless of other port calls in...

2010-07-01

110

33 CFR 151.1502 - Applicability.  

Code of Federal Regulations, 2011 CFR

...DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID...Nonindigenous Species in the Great Lakes and Hudson River § 151.1502 Applicability...George Washington Bridge on the Hudson River, regardless of other port calls in...

2011-07-01

111

33 CFR 151.1512 - Vessel safety.  

Code of Federal Regulations, 2010 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID SUBSTANCES, GARBAGE...Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1512 Vessel safety. Nothing in this...

2010-07-01

112

33 CFR 151.1512 - Vessel safety.  

Code of Federal Regulations, 2011 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID SUBSTANCES, GARBAGE...Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1512 Vessel safety. Nothing in this...

2011-07-01

113

33 CFR 151.65 - Reporting requirements.  

Code of Federal Regulations, 2010 CFR

...GARBAGE, MUNICIPAL OR COMMERCIAL WASTE, AND BALLAST WATER Implementation...Ships Garbage Pollution and Sewage § 151.65 Reporting requirements...400 or 9 CFR 94.5. (b) Medical wastes. (c) Hazardous wastes defined in 40 CFR...

2010-07-01

114

27 CFR 19.151 - General.  

Code of Federal Regulations, 2011 CFR

...DEPARTMENT OF THE TREASURY LIQUORS DISTILLED SPIRITS PLANTS Bonds and Consents of Surety Bonding Requirements for A Dsp § 19.151 General. (a) Bond required. Any person who plans to establish and operate a distilled...

2011-04-01

115

42 CFR 456.151 - Definitions.  

Code of Federal Regulations, 2010 CFR

...Utilization Control: Mental Hospitals § 456.151 Definitions. As used in this subpart: Medical care appraisal norms or norms means numerical or statistical measures of usually observed performance. Medical care criteria or...

2010-10-01

116

46 CFR 151.40-5 - Construction.  

Code of Federal Regulations, 2010 CFR

...Pressure Control Installations § 151.40-5 Construction. Construction of machinery or equipment, such as heat exchangers, condensers, piping, etc., associated with temperature or pressure control systems shall meet the requirements...

2010-10-01

117

46 CFR 151.40-5 - Construction.  

Code of Federal Regulations, 2012 CFR

...Pressure Control Installations § 151.40-5 Construction. Construction of machinery or equipment, such as heat exchangers, condensers, piping, etc., associated with temperature or pressure control systems shall meet the requirements...

2012-10-01

118

46 CFR 151.40-5 - Construction.  

Code of Federal Regulations, 2013 CFR

...Pressure Control Installations § 151.40-5 Construction. Construction of machinery or equipment, such as heat exchangers, condensers, piping, etc., associated with temperature or pressure control systems shall meet the requirements...

2013-10-01

119

46 CFR 151.40-2 - Materials.  

Code of Federal Regulations, 2014 CFR

... BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Temperature or Pressure Control Installations § 151.40-2 Materials. Materials used in the construction of temperature or pressure control systems shall be suitable for the...

2014-10-01

120

46 CFR 151.40-5 - Construction.  

Code of Federal Regulations, 2014 CFR

... BARGES CARRYING BULK LIQUID HAZARDOUS MATERIAL CARGOES Temperature or Pressure Control Installations § 151.40-5 Construction...exchangers, condensers, piping, etc., associated with temperature or pressure control systems shall meet the requirements...

2014-10-01

121

40 CFR 421.151 - Specialized definitions.  

Code of Federal Regulations, 2014 CFR

...AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Primary Beryllium Subcategory § 421.151 Specialized definitions. For the purpose of this subpart the general definitions,...

2014-07-01

122

40 CFR 421.151 - Specialized definitions.  

Code of Federal Regulations, 2011 CFR

...AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Primary Beryllium Subcategory § 421.151 Specialized definitions. For the purpose of this subpart the general definitions,...

2011-07-01

123

40 CFR 421.151 - Specialized definitions.  

Code of Federal Regulations, 2010 CFR

...AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Primary Beryllium Subcategory § 421.151 Specialized definitions. For the purpose of this subpart the general definitions,...

2010-07-01

124

40 CFR 421.151 - Specialized definitions.  

Code of Federal Regulations, 2012 CFR

...AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Primary Beryllium Subcategory § 421.151 Specialized definitions. For the purpose of this subpart the general definitions,...

2012-07-01

125

40 CFR 421.151 - Specialized definitions.  

Code of Federal Regulations, 2013 CFR

...AGENCY (CONTINUED) EFFLUENT GUIDELINES AND STANDARDS NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY Primary Beryllium Subcategory § 421.151 Specialized definitions. For the purpose of this subpart the general definitions,...

2013-07-01

126

19 CFR 151.65 - Duties.  

Code of Federal Regulations, 2013 CFR

...SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.65 Duties. Duties on wool or hair subject to duty at a rate per clean...Estimated and liquidated duties on wool or hair tested for clean yield pursuant to...

2013-04-01

127

19 CFR 151.65 - Duties.  

Code of Federal Regulations, 2014 CFR

...SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.65 Duties. Duties on wool or hair subject to duty at a rate per clean...Estimated and liquidated duties on wool or hair tested for clean yield pursuant to...

2014-04-01

128

19 CFR 151.65 - Duties.  

Code of Federal Regulations, 2012 CFR

...SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.65 Duties. Duties on wool or hair subject to duty at a rate per clean...Estimated and liquidated duties on wool or hair tested for clean yield pursuant to...

2012-04-01

129

49 CFR 572.151 - General description.  

Code of Federal Regulations, 2011 CFR

...SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) ANTHROPOMORPHIC TEST DEVICES CRABI 12-Month-Old Infant, Alpha Version § 572.151 General description. (a) The 12-month-old-infant crash test dummy is described by...

2011-10-01

130

30 CFR 218.151 - Rental fees.  

Code of Federal Regulations, 2010 CFR

...MINERALS MANAGEMENT SERVICE, DEPARTMENT OF THE INTERIOR MINERALS REVENUE MANAGEMENT COLLECTION OF MONIES AND PROVISION FOR GEOTHERMAL CREDITS AND INCENTIVES Oil, Gas and Sulfur, Offshore § 218.151 Rental fees. The annual rental paid...

2010-07-01

131

33 CFR 151.2005 - Definitions.  

Code of Federal Regulations, 2013 CFR

...Ballast Water Management for Control of Nonindigenous Species in Waters of the United States § 151.2005 Definitions...Environmental Research Center as mandated under the National Invasive Species Act of 1996. Port or place of departure means...

2013-07-01

132

33 CFR 151.2005 - Definitions.  

Code of Federal Regulations, 2012 CFR

...Ballast Water Management for Control of Nonindigenous Species in Waters of the United States § 151.2005 Definitions...Environmental Research Center as mandated under the National Invasive Species Act of 1996. Port or place of departure means...

2012-07-01

133

33 CFR 151.2005 - Definitions.  

Code of Federal Regulations, 2014 CFR

...Ballast Water Management for Control of Nonindigenous Species in Waters of the United States § 151.2005 Definitions...Environmental Research Center as mandated under the National Invasive Species Act of 1996. Port or place of departure means...

2014-07-01

134

33 CFR 151.1500 - Purpose.  

Code of Federal Regulations, 2010 CFR

...Lakes and Hudson River § 151.1500 Purpose. The purpose of this subpart is to implement the provisions of the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990 (16 U.S.C. 4701 et seq....

2010-07-01

135

33 CFR 151.1500 - Purpose.  

Code of Federal Regulations, 2011 CFR

...Lakes and Hudson River § 151.1500 Purpose. The purpose of this subpart is to implement the provisions of the Nonindigenous Aquatic Nuisance Prevention and Control Act of 1990 (16 U.S.C. 4701 et seq....

2011-07-01

136

49 CFR 572.151 - General description.  

Code of Federal Regulations, 2010 CFR

...SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) ANTHROPOMORPHIC TEST DEVICES CRABI 12-Month-Old Infant, Alpha Version § 572.151 General description. (a) The 12-month-old-infant crash test dummy is described by...

2010-10-01

137

24 CFR 850.151 - Project restrictions.  

Code of Federal Regulations, 2010 CFR

...HOUSING DEVELOPMENT GRANTS Project Management § 850.151 Project restrictions. (a) Owner-grantee...availability of units in projects assisted. Affirmative marketing...available housing. (h) Management and maintenance...

2010-04-01

138

INTERCELLULAR SPACES OF THE HUMAN EPIDERMIS AS DEMONSTRATED WITH LANTHANUM  

Microsoft Academic Search

In normal human epidermis, lanthanum penetrated into the basal lamina-basal cell interspaces, including half-desmosome areas, non-specific intercellular junctions, desmosomes, close approximations and most of the occluding zonules and macules. The majority of what were previously claimed to be tight junctions were permeated by lanthanum, revealing that they were actually gap junctions. Maculae occludentes which follow desmosomes, for instance, were found

Ken Hashimoto

1971-01-01

139

Lanthanum Halide Nanoparticle Scintillators for Nuclear Radiation Detection  

SciTech Connect

Nanoparticles with sizes <10 nm were fabricated and characterized for their nanocomposite radiation detector properties. This work investigated the properties of several nanostructured radiation scintillators, in order to determine the viability of using scintillators employing nanostructured lanthanum tribromide, lanthanum trifluoride, or cerium tribromide. Preliminary results of this investigation are consistent with the idea that these materials have an intrinsic response to nuclear radiation that may be correlated to the energy of the incident radiation.

Guss, P. P., Guise, R., Yuan, D., Mukhopadhyay, S., O'Brien, R., Lowe, D.

2013-02-01

140

Diminiode thermionic energy conversion with lanthanum-hexaboride electrodes  

NASA Technical Reports Server (NTRS)

Thermionic conversion data obtained from a variable gap cesium diminiode with a hot pressed, sintered lanthanum hexaboride emitter and an arc melted lanthanum hexaboride collector are presented. Performance curves cover a range of temperatures: emitter 1500 to 1700 K, collector 750 to 1000 K, and cesium reservoir 370 to 510 K. Calculated values of emitter and collector work functions and barrier index are also given.

Kroeger, E. W.; Bair, V. L.; Morris, J. F.

1978-01-01

141

Sintering aid for lanthanum chromite refractories  

DOEpatents

An electronically conductive interconnect layer for use in a fuel cell or other electrolytic device is formed with sintering additives to permit densification in a monolithic structure with the electrode materials. Additions including an oxide of boron and a eutectic forming composition of Group 2A metal fluorides with Group 3B metal fluorides and Group 2A metal oxides with Group 6B metal oxides lower the required firing temperature of lanthanum chromite to permit densification to in excess of 94% of theoretical density without degradation of electrode material lamina. The monolithic structure is formed by tape casting thin layers of electrode, interconnect and electrolyte materials and sintering the green lamina together under common densification conditions.

Flandermeyer, Brian K. (Bolingbrook, IL); Poeppel, Roger B. (Glen Ellyn, IL); Dusek, Joseph T. (Downers Grove, IL); Anderson, Harlan U. (Rolla, MO)

1988-01-01

142

Lanthanum tetrazinc, LaZn4.  

PubMed

The structure of lanthanum tetrazinc, LaZn(4), has been determined from single-crystal X-ray diffraction data for the first time, approximately 70 years after its discovery. The compound exhibits a new structure type in the space group Cmcm, with one La atom and two Zn atoms occupying sites with m2m symmetry, and one Zn atom occupying a site with 2.. symmetry. The structure is closely related to the BaAl(4), La(3)Al(11), BaNi(2)Si(2) and CaCu(5) structure types, which can be presented as close-packed arrangements of 18-vertex clusters, in this case LaZn(18). The kindred structure types contain related 18-vertex clusters around atoms of the rare earth or alkaline earth metal. PMID:22669182

Oshchapovsky, Igor; Pavlyuk, Volodymyr; Dmytriv, Grygoriy; Griffin, Alexandra

2012-06-01

143

Electrical properties of lanthanum doped barium titanate ceramics  

SciTech Connect

Pure and lanthanum doped barium titanate (BT) ceramics were prepared by sintering pellets at 1300 deg. C for 8 h, obtained from nanopowders synthesized by the polymeric precursor method. XRD results showed formation of a tetragonal structure. The presence of dopants changed the tetragonal structure to pseudo-cubic. The polygonal grain size was reduced up to 300 nm with addition of lanthanum as a donor dopant. Determined dielectric properties revealed that lanthanum modified BT ceramics possessed a diffused ferroelectric character in comparison with pure BT that is a classical ferroelectric material. In doped BT phase transition temperatures were shifted to lower temperatures and dielectric constant values were much higher than in pure BT. A modified Currie Weiss law was used to explore the connection between the doping level and degree of diffuseness of phase transitions. Impedance spectroscopy measurements were carried out at different temperatures in order to investigate electrical resistivity of materials and appearance of a PTCR effect. - Highlights: {yields} Pure and lanthanum doped BaTiO{sub 3} were prepared by polymeric precursors method. {yields} Change of structure from tetragonal to pseudo-cubic. {yields} Lanthanum as a donor dopant influenced on change of ferro-para phase transition. {yields} The diffuseness factor indicated the formation of diffuse ferroelectric material. {yields} Lanthanum affected on PTCR effect appearance in BT ceramics.

Vijatovic Petrovic, M.M., E-mail: miravijat@yahoo.com [Institute for Multidisciplinary Research, Belgrade University, Kneza Viseslava 1, Belgrade (Serbia); Bobic, J.D. [Institute for Multidisciplinary Research, Belgrade University, Kneza Viseslava 1, Belgrade (Serbia); Ramoska, T.; Banys, J. [Faculty of Physics, Vilnius University, Sauletekio al. 9, Vilnius (Lithuania); Stojanovic, B.D. [Institute for Multidisciplinary Research, Belgrade University, Kneza Viseslava 1, Belgrade (Serbia)

2011-10-15

144

Single-Longitudinal-Mode Lanthanum-Codoped Bismuth-Based Erbium Doped Fiber Ring Laser  

E-print Network

Single-Longitudinal-Mode Lanthanum-Codoped Bismuth-Based Erbium Doped Fiber Ring Laser K. K and demonstrate a stable single-longitudinal-mode lanthanum-codoped bismuth oxide- based erbium doped fiber ring

Wai, Ping-kong Alexander

145

Pulsed laser deposition of lanthanum monosulfide thin films on silicon substrates*  

E-print Network

Pulsed laser deposition of lanthanum monosulfide thin films on silicon substrates* S. Fairchilda; accepted 13 December 2004; published 26 January 2005 Thin films of lanthanum monosulfide LaS have been

Boolchand, Punit

146

Al NMR study of the structure of lanthanum and yttrium based aluminosilicate glasses and melts  

E-print Network

A 27 Al NMR study of the structure of lanthanum and yttrium based aluminosilicate glasses and melts actinides (Pu as well as minor actinides). Yttrium and lanthanum has been chosen to simulate actinides

Paris-Sud XI, Université de

147

Improved tensile creep properties of yttrium-and lanthanum-doped alumina: a solid solution effect  

E-print Network

Improved tensile creep properties of yttrium- and lanthanum-doped alumina: a solid solution effect- and lanthanum-doped alumina (at dopant levels below the solubility limit) was examined. Both compositions (100 ppm yttrium, 100 ppm lanthanum) exhibited a uniform microstructure consisting of fine, equiaxed grains

Cho, Junghyun

148

The Casparian Strip as a Barrier to the Movement of Lanthanum in Corn Roots  

Microsoft Academic Search

The effectiveness of the Casparian strip as a barrier to apoplastic movement of solutes from cortex to stele of corn roots was investigated by using lanthanum in combination with electron microscopy. Lanthanum deposits were found only in cell walls and on the outside of the plasma membrane of epidermal, cortical, and endodermal cells up to the Casparian strip. Lanthanum was

G. Nagahashi; W. W. Thomson; R. T. Leonard

1974-01-01

149

Elastic constants and high-pressure structural transitions in lanthanum monochalcogenides from experiment and theory  

E-print Network

Elastic constants and high-pressure structural transitions in lanthanum monochalcogenides from 2007 The high-pressure structural behavior of lanthanum monochalcogenides is investigated by theory.1103/PhysRevB.75.184108 PACS number s : 61.50.Ks, 71.15.Nc, 62.20.Dc, 71.20.Gj I. INTRODUCTION The lanthanum

Svane, Axel Torstein

150

PoS(INTEGRAL2010)107 Development of an Anger camera in lanthanum  

E-print Network

PoS(INTEGRAL2010)107 Development of an Anger camera in lanthanum bromide for gamma-ray space, MA, USA S. Blin, P. Barrillon LAL, IN2P3-CNRS and Univ Paris-Sud, 91898 Orsay cedex, France Lanthanum astronomy in the MeV range Vincent Tatischeff 1. Introduction The recently developed cerium-doped lanthanum

Paris-Sud XI, Université de

151

Crack tip 90 domain switching in tetragonal lanthanum-modified lead zirconate titanate under an  

E-print Network

Crack tip 90° domain switching in tetragonal lanthanum-modified lead zirconate titanate under) Lanthanum-modified lead zirconate titanate ferroelectric ceramics (Pb0.96La0.04)(Zr0.40Ti0.60)0.99O3 were revealed the residual domain switching in a trans- parent relaxor-type ferroelectric 9.4/65/35 lanthanum

Zhu, Ting

152

Development and Characterization of a Diverging Cusped Field Thruster and a Lanthanum Hexaboride Hollow  

E-print Network

Development and Characterization of a Diverging Cusped Field Thruster and a Lanthanum Hexaboride of a Diverging Cusped Field Thruster and a Lanthanum Hexaboride Hollow Cathode Daniel George Courtney June 2008 and Characterization of a Diverging Cusped Field Thruster and a Lanthanum Hexaboride Hollow Cathode by Daniel George

153

Water Research 39 (2005) 22292236 Effect of counterions on lanthanum biosorption  

E-print Network

Water Research 39 (2005) 2229­2236 Effect of counterions on lanthanum biosorption by Sargassum on the biosorption of La3+ (Lanthanum) using Sargassum polycystum Ca-loaded biomass was studied in this work systems. The presence of chloride ions did not seem to interfere with the lanthanum removal

Volesky, Bohumil

154

Electric-fieldtemperature phase diagram of the relaxor ferroelectric lanthanum-modified lead zirconate titanate  

E-print Network

Electric-field­temperature phase diagram of the relaxor ferroelectric lanthanum-modified lead in the electric-field­temperature phase diagram of 9/65/35 lanthanum-modified lead zirconate titanate ceramics ferroelectrics. S0163-1829 99 00233-7 I. INTRODUCTION Lanthanum-modified lead zirconate titanate ceramics Pb1 x

Bobnar, Vid

155

J. Am. Ceram. Soc., 80 [1] 13341 (1997) Low-Temperature Chemical Synthesis of Lanthanum Monoaluminate  

E-print Network

J. Am. Ceram. Soc., 80 [1] 133­41 (1997) Low-Temperature Chemical Synthesis of Lanthanum substrate In an attempt to prepare LaAlO3 by an aerosol-furnace tech- nique,16 using water-soluble lanthanum and aluminum salts,materials, lanthanum monoaluminate (LaAlO3), was suc- products were formed at furnace

Tas, A. Cuneyt

156

Joining of highly aluminum-doped lanthanum strontium manganese oxide with tetragonal zirconia by plastic deformation  

E-print Network

Joining of highly aluminum-doped lanthanum strontium manganese oxide with tetragonal zirconia February 2008; accepted 24 March 2008 Abstract Aluminum-doped lanthanum strontium manganese oxide, La0.77Sr at the interface. © 2008 Elsevier B.V. All rights reserved. Keywords: Lanthanum strontium aluminum manganese oxide

Dutta, Prabir K.

157

Wave and transport studies utilizing dense plasma filaments generated with a lanthanum hexaboride cathode  

E-print Network

Wave and transport studies utilizing dense plasma filaments generated with a lanthanum hexaboride March 2011; accepted 1 November 2011; published online 27 December 2011) A portable lanthanum hexaboride. Lafferty1 in 1951 first reported on the use of lanthanum hexaboride (LaB6) as a potent electron emitter

California at Los Angles, University of

158

40 CFR 721.10370 - Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1).  

Code of Federal Regulations, 2012 CFR

...false Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1). 721.10370...10370 Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1). (a) Chemical...identified as phosphinic acid, p-octyl-, lanthanum (3+) salt (2:1) (PMN...

2012-07-01

159

40 CFR 721.10370 - Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1).  

Code of Federal Regulations, 2013 CFR

...Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1). 721.10370 Section 721...Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1). (a) Chemical substance...phosphinic acid, p-octyl-, lanthanum (3+) salt (2:1) (PMN P-10-99; CAS...

2013-07-01

160

40 CFR 721.10370 - Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1).  

Code of Federal Regulations, 2014 CFR

...Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1). 721.10370 Section 721...Phosphonic acid, p-octyl-, lanthanum (3+) salt (2:1). (a) Chemical substance...phosphinic acid, p-octyl-, lanthanum (3+) salt (2:1) (PMN P-10-99; CAS...

2014-07-01

161

Sonochemical growth of lanthanum conversion films using ultrasonic immersion method for performance improvement of zinc electrodes  

Microsoft Academic Search

The growth of lanthanum conversion coatings on the zinc powder modified by ultrasonic immersion is deeply investigated by Auger electron spectroscopy, X-ray photoelectron spectroscopy, spectrophotometrical and other characterization techniques. The conversion kinetics of La element and the growth mechanism of lanthanum conversion layers are also reported and proposed. The influence of the lanthanum conversion coatings on the discharge properties and

Liqun Zhu; Hui Zhang; Weiping Li; Huicong Liu

2009-01-01

162

Methyl chloride production from methane over lanthanum-based catalysts.  

PubMed

The mechanism of selective production of methyl chloride by a reaction of methane, hydrogen chloride, and oxygen over lanthanum-based catalysts was studied. The results suggest that methane activation proceeds through oxidation-reduction reactions on the surface of catalysts with an irreducible metal-lanthanum, which is significantly different from known mechanisms for oxidative chlorination. Activity and spectroscopic measurements show that lanthanum oxychloride (LaOCl), lanthanum trichloride (LaCl3), and lanthanum phases with an intermediate extent of chlorination are all active for this reaction. The catalyst is stable with no noticeable deactivation after three weeks of testing. Kinetic measurements suggest that methane activation proceeds on the surface of the catalyst. Flow and pulse experiments indicate that the presence of hydrogen chloride is not required for activity, and its role appears to be limited to maintaining the extent of catalyst chlorination. In contrast, the presence of gas-phase oxygen is essential for catalytic activity. Density-functional theory calculations suggest that oxygen can activate surface chlorine species by adsorbing dissociatively and forming OCl surface species, which can serve as an active site for methane activation. The proposed mechanism, thus, involves changing of the formal oxidation state of surface chlorine from -1 to +1 without any changes in the oxidation state of the underlying metal. PMID:17295483

Podkolzin, Simon G; Stangland, Eric E; Jones, Mark E; Peringer, Elvira; Lercher, Johannes A

2007-03-01

163

Cytocompatibility of a free machining titanium alloy containing lanthanum.  

PubMed

Titanium alloys like Ti6Al4V are widely used in medical engineering. However, the mechanical and chemical properties of titanium alloys lead to poor machinability, resulting in high production costs of medical products. To improve the machinability of Ti6Al4V, 0.9% of the rare earth element lanthanum (La) was added. The microstructure, the mechanical, and the corrosion properties were determined. Lanthanum containing alloys exhibited discrete particles of cubic lanthanum. The mechanical properties and corrosion resistance were slightly decreased but are still sufficient for many applications in the field of medical engineering. In vitro experiments with mouse macrophages (RAW 264.7) and human bone-derived cells (MG-63, HBDC) were performed and revealed that macrophages showed a dose response below and above a LaCl3 concentration of 200 microM, while MG-63 and HBDC tolerated three times higher concentrations without reduction of viability. The viability of cells cultured on disks of the materials showed no differences between the reference and the lanthanum containing alloy. We therefore propose that lanthanum containing alloy appears to be a good alternative for biomedical applications, where machining of parts is necessary. PMID:18646202

Feyerabend, Frank; Siemers, Carsten; Willumeit, Regine; Rösler, Joachim

2009-09-01

164

The use of ionic lanthanum as a diffusion tracer and as a marker of calcium binding sites  

Microsoft Academic Search

The distribution of ionic lanthanum (La3+) was studied after perfusion of the isolated rat heart with a buffered salt solution containing lanthanum chloride. We have demonstrated that the localization of lanthanum differed from that shown in previous studies in which hearts were exposed to ionic or colloidal lanthanum during or after fixation.

E. Weihe; W. Hartschuh; J. Metz; U. Brühl

1977-01-01

165

14 CFR 151.86 - Lighting and electrical work: General.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Lighting and electrical work: General. 151.86 ...Standards § 151.86 Lighting and electrical work: General. (a) The...lighting facilities and related electrical work, as provided in §...

2013-01-01

166

47 CFR 101.151 - Use of signal boosters.  

Code of Federal Regulations, 2010 CFR

...101.151 Section 101.151 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO SERVICES...remote areas, i.e., areas where there is little or no risk of interference to other users. (e) The licensee...

2010-10-01

167

14 CFR 151.111 - Advance planning proposals: General.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Advance planning proposals: General. 151.111 Section...AIRPORTS Rules and Procedures for Advance Planning and Engineering Proposals § 151.111 Advance planning proposals: General. (a) Each...

2010-01-01

168

14 CFR 151.119 - Advance planning proposals: Procedures; funding.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Advance planning proposals: Procedures; funding. 151...AIRPORTS Rules and Procedures for Advance Planning and Engineering Proposals § 151.119 Advance planning proposals: Procedures; funding....

2010-01-01

169

14 CFR 151.113 - Advance planning proposals: Sponsor eligibility.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Advance planning proposals: Sponsor eligibility. 151...AIRPORTS Rules and Procedures for Advance Planning and Engineering Proposals § 151.113 Advance planning proposals: Sponsor eligibility....

2010-01-01

170

9 CFR 151.7 - Examination of animal.  

Code of Federal Regulations, 2012 CFR

9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Examination of animal. 151.7 Section 151.7 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE ANIMAL...

2012-01-01

171

9 CFR 151.7 - Examination of animal.  

Code of Federal Regulations, 2013 CFR

9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Examination of animal. 151.7 Section 151.7 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE ANIMAL...

2013-01-01

172

9 CFR 151.7 - Examination of animal.  

Code of Federal Regulations, 2014 CFR

9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Examination of animal. 151.7 Section 151.7 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE ANIMAL...

2014-01-01

173

19 CFR 151.70 - Method of sampling by Customs.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Method of sampling by Customs. 151.70 Section...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.70 Method of sampling by Customs. A general sample...

2010-04-01

174

46 CFR 151.01-30 - Effective date.  

Code of Federal Regulations, 2013 CFR

46 Shipping 5 2013-10-01 2013-10-01 false Effective date. 151.01-30 Section 151.01-30 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) CERTAIN BULK DANGEROUS CARGOES BARGES CARRYING...

2013-10-01

175

46 CFR 151.50-41 - Carbon disulfide (carbon bisulfide).  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Carbon disulfide (carbon bisulfide). 151.50-41...Requirements § 151.50-41 Carbon disulfide (carbon bisulfide). (a) All openings...arrest its flame propagation, carbon disulfide (carbon bisulfide ) requires...

2010-10-01

176

7 CFR 948.151 - Colorado Potato Committee membership.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Colorado Potato Committee membership. 948.151 ...Nuts), DEPARTMENT OF AGRICULTURE IRISH POTATOES GROWN IN COLORADO Rules and Regulations...Requirements § 948.151 Colorado Potato Committee membership. The...

2010-01-01

177

Lanthanum Carbonate for Hyperphosphatemia in Patients on Peritoneal Dialysis  

PubMed Central

? Background: The efficacy of the phosphate binder lanthanum carbonate has been demonstrated for hemodialysis patients, but no studies have focused on patients undergoing continuous ambulatory peritoneal dialysis (CAPD). We evaluated whether lanthanum carbonate could control phosphate levels in patients on CAPD. ? Methods: In this 48-week open-label prospective study, 28 patients on CAPD with a phosphate level of 6 mg/dL or greater were given lanthanum carbonate titrated from 750 mg to 2250 mg daily to achieve a target serum phosphate level of less than 6 mg/dL. The primary efficacy endpoint was reduction of serum phosphate to less than 6 mg/dL. Serum levels of calcium and parathyroid hormone were also evaluated, as were the Ca×P product and adverse effects. ? Results: From week 4 to the end of the study at week 48, we observed a significant reduction of serum phosphate to 5.25 ± 0.97 mg/dL from 6.88 ± 1.06 mg/dL at study start (p < 0.01). At the end of the study, 78.6% of participants had achieved the target of less than 6 mg/dL. Because no change of serum calcium occurred, the Ca×P product declined significantly during the study. Intact parathyroid hormone declined gradually over the study period, but the change had not reached significance at the end of the study (p = 0.11). The mean final dose of lanthanum carbonate was 946 mg daily. The only adverse effect reported was mild nausea in 1 patient. ? Conclusions: Lanthanum carbonate is an effective phosphate binder that can control serum phosphate and Ca×P product in CAPD patients with hyperphosphatemia. Lanthanum carbonate was well tolerated in our population. PMID:23209037

Ohno, Michiya; Ohashi, Hiroshige; Oda, Hiroshi; Yokoyama, Haruko; Okada, Miho; Nagaya, Mayu; Izumi, Kumiko; Ito, Hitomi; Katoh, Shuji

2013-01-01

178

Program in Computer Science 151 Engineer's Way  

E-print Network

Program in Computer Science 151 Engineer's Way University of Virginia PO Box 400740 Charlottesville, VA 22904-4740 (434) 982-2394 www.cs.virginia.edu/ba Overview Computer Science is the study-five faculty members. Our faculty is strongly committed to teaching as well as conducting world-class research

Whittle, Mark

179

33 CFR 151.1502 - Applicability.  

Code of Federal Regulations, 2013 CFR

...regardless of other port calls in the United States or Canada during that voyage, except as expressly provided in 33 CFR 151.2015(a). All vessels subject to this subpart are also required to comply with the applicable requirements of 33 CFR...

2013-07-01

180

33 CFR 151.1502 - Applicability.  

Code of Federal Regulations, 2012 CFR

...regardless of other port calls in the United States or Canada during that voyage, except as expressly provided in 33 CFR 151.2015(a). All vessels subject to this subpart are also required to comply with the applicable requirements of 33 CFR...

2012-07-01

181

33 CFR 151.1502 - Applicability.  

Code of Federal Regulations, 2014 CFR

...WATER Ballast Water Management for Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1502 Applicability...during any part of its voyage, enter the Snell Lock at Massena, New York, or navigates north of the George Washington...

2014-07-01

182

14 CFR 151.73 - Land acquisition.  

Code of Federal Regulations, 2010 CFR

...protection meeting the standards of § 77.23 as applied to §§ 77.25 and 77.27 of this chapter; (5) To allow installing an ALS (as described in § 151.13), in which case the costs of acquiring land needed for it are eligible for 75 percent...

2010-01-01

183

19 CFR 151.61 - Definitions.  

Code of Federal Regulations, 2013 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.61 Definitions. The following...merchandise which consists exclusively of wool or hair free of all vegetable and other foreign...percent of material removable from the wool or hair by extraction with alcohol,...

2013-04-01

184

19 CFR 151.61 - Definitions.  

Code of Federal Regulations, 2012 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.61 Definitions. The following...merchandise which consists exclusively of wool or hair free of all vegetable and other foreign...percent of material removable from the wool or hair by extraction with alcohol,...

2012-04-01

185

19 CFR 151.61 - Definitions.  

Code of Federal Regulations, 2014 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.61 Definitions. The following...merchandise which consists exclusively of wool or hair free of all vegetable and other foreign...percent of material removable from the wool or hair by extraction with alcohol,...

2014-04-01

186

14 CFR 151.73 - Land acquisition.  

Code of Federal Regulations, 2014 CFR

...protection meeting the standards of § 77.23 as applied to §§ 77.25 and 77.27 of this chapter; (5) To allow installing an ALS (as described in § 151.13), in which case the costs of acquiring land needed for it are eligible for 75 percent...

2014-01-01

187

14 CFR 151.73 - Land acquisition.  

Code of Federal Regulations, 2013 CFR

...protection meeting the standards of § 77.23 as applied to §§ 77.25 and 77.27 of this chapter; (5) To allow installing an ALS (as described in § 151.13), in which case the costs of acquiring land needed for it are eligible for 75 percent...

2013-01-01

188

Density Matrices 15.1 Introduction  

E-print Network

Chapter 15 Density Matrices 15.1 Introduction Density matrices are employed in quantum mechanics partial descriptions, and density matrices play a somewhat similar role in quantum statistical mechanics in which density matrices are used in quantum theory, and discuss their physical significance. Positive

Griffiths, Robert B.

189

Effect of seeding on the formation of lanthanum hexaaluminates synthesized through advanced sol gel process  

NASA Astrophysics Data System (ADS)

Advanced sol gel processing was used to synthesize high purity lanthanum hexaaluminate powders. The effect of seeding on the formation of lanthanum hexaaluminate was also studied by seeding the gel. Dry gel was calcined at various temperatures starting from 1100 °C to 1600 °C for 2 h to study the phase evolution. The combine effects of advanced sol gel processing and the presence of seeds promoted the formation of lanthanum hexaaluminate phase at lower temperature than the conventional routes. Lanthanum hexaaluminate phase was detected at 1201 °C and 1300 °C in seeded and un-seeded gels, respectively. The presence of seed decreases the temperature of formation of lanthanum hexaaluminate by 99 °C. Single phase lanthanum hexaaluminate was formed at 1600 °C in seeded gel whereas trace of lanthanum monoaluminate phase still present in un-seeded gel even at 1600 °C.

Jana, P.; Jayan, P. S.; Mandal, S.; Biswas, K.

2014-12-01

190

19 CFR 151.22 - Estimated duties on raw sugar.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Estimated duties on raw sugar. 151.22 Section 151.22 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.22 Estimated duties on raw sugar. Estimated duties shall be taken...

2012-04-01

191

19 CFR 151.22 - Estimated duties on raw sugar.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Estimated duties on raw sugar. 151.22 Section 151.22 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.22 Estimated duties on raw sugar. Estimated duties shall be taken...

2014-04-01

192

19 CFR 151.22 - Estimated duties on raw sugar.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Estimated duties on raw sugar. 151.22 Section 151.22 Customs...SAMPLING, AND TESTING OF MERCHANDISE Sugars, Sirups, and Molasses § 151.22 Estimated duties on raw sugar. Estimated duties shall be taken...

2013-04-01

193

25 CFR 151.3 - Land acquisition policy.  

Code of Federal Regulations, 2012 CFR

...Indians 1 2012-04-01 2011-04-01 true Land acquisition policy. 151.3 Section 151.3 Indians...BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER LAND ACQUISITIONS § 151.3 Land acquisition...

2012-04-01

194

25 CFR 151.3 - Land acquisition policy.  

Code of Federal Regulations, 2010 CFR

...Indians 1 2010-04-01 2010-04-01 false Land acquisition policy. 151.3 Section 151.3 Indians...BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER LAND ACQUISITIONS § 151.3 Land acquisition...

2010-04-01

195

25 CFR 151.3 - Land acquisition policy.  

Code of Federal Regulations, 2011 CFR

...Indians 1 2011-04-01 2011-04-01 false Land acquisition policy. 151.3 Section 151.3 Indians...BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER LAND ACQUISITIONS § 151.3 Land acquisition...

2011-04-01

196

25 CFR 151.3 - Land acquisition policy.  

Code of Federal Regulations, 2014 CFR

...Indians 1 2014-04-01 2014-04-01 false Land acquisition policy. 151.3 Section 151.3 Indians...BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR LAND AND WATER LAND ACQUISITIONS § 151.3 Land acquisition...

2014-04-01

197

19 CFR 151.26 - Molasses in tank cars.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 2014-04-01 false Molasses in tank cars. 151.26 Section 151.26 Customs Duties...and Molasses § 151.26 Molasses in tank cars. When molasses is imported in tank cars, the importer shall file with the port...

2014-04-01

198

46 CFR 151.50-21 - Sulfuric acid.  

Code of Federal Regulations, 2012 CFR

...5 2012-10-01 2012-10-01 false Sulfuric acid. 151.50-21 Section 151.50-21 Shipping...CARGOES Special Requirements § 151.50-21 Sulfuric acid. (a) How sulfuric acid may be carried. (1) Sulfuric acid...

2012-10-01

199

46 CFR 151.50-21 - Sulfuric acid.  

Code of Federal Regulations, 2014 CFR

...5 2014-10-01 2014-10-01 false Sulfuric acid. 151.50-21 Section 151.50-21 Shipping...CARGOES Special Requirements § 151.50-21 Sulfuric acid. (a) How sulfuric acid may be carried. (1) Sulfuric acid...

2014-10-01

200

46 CFR 151.50-21 - Sulfuric acid.  

Code of Federal Regulations, 2013 CFR

...5 2013-10-01 2013-10-01 false Sulfuric acid. 151.50-21 Section 151.50-21 Shipping...CARGOES Special Requirements § 151.50-21 Sulfuric acid. (a) How sulfuric acid may be carried. (1) Sulfuric acid...

2013-10-01

201

29 CFR 1910.151 - Medical services and first aid.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Medical services and first aid. 1910.151 Section 1910.151 Labor...SAFETY AND HEALTH STANDARDS Medical and First Aid § 1910.151 Medical services and first aid. (a) The employer shall ensure the...

2011-07-01

202

29 CFR 1910.151 - Medical services and first aid.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Medical services and first aid. 1910.151 Section 1910.151 Labor...SAFETY AND HEALTH STANDARDS Medical and First Aid § 1910.151 Medical services and first aid. (a) The employer shall ensure the...

2012-07-01

203

29 CFR 1910.151 - Medical services and first aid.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Medical services and first aid. 1910.151 Section 1910.151 Labor...SAFETY AND HEALTH STANDARDS Medical and First Aid § 1910.151 Medical services and first aid. (a) The employer shall ensure the...

2014-07-01

204

29 CFR 1910.151 - Medical services and first aid.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Medical services and first aid. 1910.151 Section 1910.151 Labor...SAFETY AND HEALTH STANDARDS Medical and First Aid § 1910.151 Medical services and first aid. (a) The employer shall ensure the...

2010-07-01

205

29 CFR 1910.151 - Medical services and first aid.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Medical services and first aid. 1910.151 Section 1910.151 Labor...SAFETY AND HEALTH STANDARDS Medical and First Aid § 1910.151 Medical services and first aid. (a) The employer shall ensure the...

2013-07-01

206

46 CFR 151.03-21 - Filling density.  

Code of Federal Regulations, 2012 CFR

...Shipping 5 2012-10-01 2012-10-01 false Filling density. 151.03-21 Section 151.03-21 Shipping COAST...MATERIAL CARGOES Definitions § 151.03-21 Filling density. The ratio, expressed as a percentage, of the weight...

2012-10-01

207

46 CFR 151.03-21 - Filling density.  

Code of Federal Regulations, 2014 CFR

...Shipping 5 2014-10-01 2014-10-01 false Filling density. 151.03-21 Section 151.03-21 Shipping COAST...MATERIAL CARGOES Definitions § 151.03-21 Filling density. The ratio, expressed as a percentage, of the weight...

2014-10-01

208

46 CFR 151.03-21 - Filling density.  

Code of Federal Regulations, 2013 CFR

...Shipping 5 2013-10-01 2013-10-01 false Filling density. 151.03-21 Section 151.03-21 Shipping COAST...MATERIAL CARGOES Definitions § 151.03-21 Filling density. The ratio, expressed as a percentage, of the weight...

2013-10-01

209

46 CFR 151.03-21 - Filling density.  

Code of Federal Regulations, 2010 CFR

...Shipping 5 2010-10-01 2010-10-01 false Filling density. 151.03-21 Section 151.03-21 Shipping COAST...MATERIAL CARGOES Definitions § 151.03-21 Filling density. The ratio, expressed as a percentage, of the weight...

2010-10-01

210

46 CFR 151.03-21 - Filling density.  

Code of Federal Regulations, 2011 CFR

...Shipping 5 2011-10-01 2011-10-01 false Filling density. 151.03-21 Section 151.03-21 Shipping COAST...MATERIAL CARGOES Definitions § 151.03-21 Filling density. The ratio, expressed as a percentage, of the weight...

2011-10-01

211

40 CFR 65.151 - Condensers used as control devices.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Condensers used as control devices. 65.151 Section 65.151...FEDERAL AIR RULE Closed Vent Systems, Control Devices, and Routing to a Fuel Gas System...Process § 65.151 Condensers used as control devices. (a) Condenser...

2010-07-01

212

40 CFR 65.151 - Condensers used as control devices.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Condensers used as control devices. 65.151 Section 65.151...FEDERAL AIR RULE Closed Vent Systems, Control Devices, and Routing to a Fuel Gas System...Process § 65.151 Condensers used as control devices. (a) Condenser...

2011-07-01

213

Neurotoxicological consequence of long-term exposure to lanthanum  

Microsoft Academic Search

Lanthanides, because of their diversified physical and chemical effects, have been widely used in a number of fields. As a result, more and more lanthanides are entering into the environment and eventually accumulated in human body. Recently, a new medicine, lanthanum carbonate (Fosrenol), has been used to treat chronic renal failure (CRF), and the dosage is much higher than the

Liuxing Feng; Haiqing Xiao; Xiao He; Zijie Li; Fuliang Li; Nianqing Liu; Yuliang Zhao; Yuying Huang; Zhiyong Zhang; Zhifang Chai

2006-01-01

214

Lanthanum reduces the excitation efficiency in fly photoreceptors  

Microsoft Academic Search

Lanthanum (La3+), a known inhibitor of Ca ~÷ binding proteins, was applied to the extracellular space of fly retina. Shot noise analysis indicated that a combination of intense light and La s+ caused a large (down to zero) reduction in the rate of occurrence of the quantal responses to single photons (quantum bumps) which sum to produce the photoreceptor potential.

EDITH SUSS-TOBY; BARUCH MINKE

1991-01-01

215

Discovery of Cesium, Lanthanum, Praseodymium and Promethium Isotopes  

E-print Network

Currently, forty-one cesium, thirty-five lanthanum, thirty-two praseodymium, and thirty-one promethium, isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

May, E

2011-01-01

216

Discovery of cesium, lanthanum, praseodymium and promethium isotopes  

SciTech Connect

Currently, forty-one cesium, thirty-five lanthanum, thirty-two praseodymium, and thirty-one promethium 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.

May, E.; Thoennessen, M., E-mail: thoennessen@nscl.msu.edu

2012-09-15

217

Lanthanum Ions abolish the ``Calcium Response'' of Nerve Terminals  

Microsoft Academic Search

IT is well established that, in order to release transmitter, nerve impulses arriving at the terminals require the presence of calcium ions in the external medium1. In the search for other ions which might replace calcium in the process of transmitter release at the neuromuscular junction, it has been found2,3 that lanthanum not only failed to substitute for calcium, but

R. Miledi

1971-01-01

218

Discovery of Cesium, Lanthanum, Praseodymium and Promethium Isotopes  

E-print Network

Currently, forty-one cesium, thirty-five lanthanum, thirty-two praseodymium, and thirty-one promethium, isotopes have been observed and the discovery of these isotopes is discussed here. For each isotope a brief synopsis of the first refereed publication, including the production and identification method, is presented.

E. May; M. Thoennessen

2011-09-08

219

Thermophysical Properties of Sulfides of Lanthanum, Praseodymium, Gadolinium, and Dysprosium  

Microsoft Academic Search

The temperature dependence of the thermal conductivity, electrical conductivity, thermoelectromotive force, and thermal expansion coefficient for sulfides of lanthanum, gadolinium, praseodymium and dysprosium of the composition Ln3 – xVxS4 is investigated in the temperature range from 300 to 1200 K. It is shown that the transfer phenomena and thermoelectrical properties of the investigated compositions depend on the concentration of current

G. G. Gadzhiev; Sh. M. Ismailov; M. M. Khamidov; Kh. Kh. Abdullaev; V. V. Sokolov

2000-01-01

220

Ab initio energetics of lanthanum substitution in ferroelectric bismuth titanate.  

PubMed

Using first principles calculations and atomistic thermodynamics the bulk and defect properties of orthorhombic bismuth titanate (Bi?Ti?O??) and bismuth lanthanum titanate (Bi?.??La?.??Ti?O??) have been investigated. Heats of formation, valid chemical conditions for synthesis, lanthanum substitution energies and oxygen and bismuth vacancy formation energies have been computed. The study improves our understanding of how native point defects and substitutional impurities influence the ferroelectric properties of these layered perovskite materials. It is found that lanthanum incorporation could occur on either of the two distinct bismuth sites in the structure and that the effect of substitution is to increase the formation energy of nearby native oxygen vacancies. The results provide direct atomistic evidence over a range of chemical conditions supporting the suggestion that lanthanum incorporation reduces the oxygen vacancy concentration. Oxygen vacancies contribute to ferroelectric fatigue by interacting strongly with domain walls, and therefore a decrease in their concentration is beneficial. The conditions that favor the greatest reduction in oxygen vacancy concentration are described. PMID:21460424

Shah, S H; Bristowe, P D

2011-04-20

221

Lanthanum(III) triflate catalyzed direct amidation of esters.  

PubMed

Lanthanum trifluoromethanesulfonate is an effective single-component catalyst for synthesizing a variety of amides directly from esters and amines under mild conditions. Highly selective amidation of esters and amines, as well as catalyst-controlled amidation of esters, demonstrated the effectiveness of the catalyst system. PMID:24660939

Morimoto, Hiroyuki; Fujiwara, Risa; Shimizu, Yuhei; Morisaki, Kazuhiro; Ohshima, Takashi

2014-04-01

222

The near millimetre wavelength optical constants of calcium lanthanum sulphide  

NASA Astrophysics Data System (ADS)

Spectroscopic measurements at near millimeter wavelengths made on calcium lanthanum sulphide, a potential material for infrared window applications in high speed aircraft, have revealed a region of transparency below 40/cm. The optical constants of the material have been measured from 5 to 40/cm at 293 K, in order to consider its suitability for near millimeters wavelength applications.

Birch, J. R.; Savage, J. A.; Wilson, A. E. J.; Brierley, C. J.

1992-09-01

223

Extensive lanthanum deposition in the gastric mucosa: The first histopathological report.  

PubMed

Lanthanum carbonate is one of the new phosphate binders used for the treatment of hyperphosphatemia in patients with chronic kidney disease. It is poorly absorbed from the gastrointestinal tract, forms insoluble complexes within the lumen, and prevents the absorption of dietary phosphate. A 63-year-old female with a 7-year history of peritoneal dialysis, who was treated with lanthanum carbonate for four years, underwent endoscopic submucosal dissection for intramucosal gastric cancer. Resected specimens showed massive accumulation of macrophages containing fine, granular, brown material in the lamina propria. This was confirmed as lanthanum deposition by scanning electron microscopy with energy dispersive x-ray spectroscopy. Although lanthanum may be poorly absorbed, increased tissue accumulation of lanthanum, particularly in the liver and bone, has been reported in animals with chronic kidney disease. This report indicates enhanced gastrointestinal absorption of lanthanum in some patients or conditions, although its clinical significance awaits further studies. PMID:25413959

Makino, Mutsuki; Kawaguchi, Kenji; Shimojo, Hisashi; Nakamura, Hironori; Nagasawa, Masaki; Kodama, Ryo

2014-11-20

224

Fabrication of mesoporous and high specific surface area lanthanum carbide-carbon nanotube composites  

NASA Astrophysics Data System (ADS)

Mesoporous lanthanum carbide-carbon nanotube composites were produced by means of carbothermal reaction of lanthanum oxide, graphite and multi-walled carbon nanotube mixtures under high vacuum. Residual gas analysis revealed the higher reactivity of lanthanum oxide towards carbon nanotubes compared to graphite. After sintering, the composites revealed a specific surface area increasing with the amount of carbon nanotubes introduced. The meso-porosity of carbon nanotubes was maintained after thermal treatment.

Biasetto, L.; Carturan, S.; Maggioni, G.; Zanonato, P.; Di Bernardo, P.; Colombo, P.; Andrighetto, A.; Prete, G.

2009-04-01

225

Investigation into Nanostructured Lanthanum Halides and CeBr{sub 3} for Nuclear Radiation Detection  

SciTech Connect

This slide-show presents work on radiation detection with nanostructured lanthanum halides and CeBr{sub 3}. The goal is to extend the gamma energy response on both low and high-energy regimes by demonstrating the ability to detect low-energy x-rays and relatively high-energy activation prompt gamma rays simultaneously using the nano-structured lanthanum bromide, lanthanum fluoride, cerium bromide, or other nanocrystal material. Homogeneous and nano structure cases are compared.

Guss, P., Guise, R., Mukhopadhyay, S., Yuan, D.

2011-06-22

226

Nanoscale assembly of lanthanum silica with dense and porous interfacial structures  

PubMed Central

This work reports on the nanoscale assembly of hybrid lanthanum oxide and silica structures, which form patterns of interfacial dense and porous networks. It was found that increasing the molar ratio of lanthanum nitrate to tetraethyl orthosilicate (TEOS) in an acid catalysed sol-gel process alters the expected microporous metal oxide silica structure to a predominantly mesoporous structure above a critical lanthanum concentration. This change manifests itself by the formation of a lanthanum silicate phase, which results from the reaction of lanthanum oxide nanoparticles with the silica matrix. This process converts the microporous silica into the denser silicate phase. Above a lanthanum to silica ratio of 0.15, the combination of growth and microporous silica consumption results in the formation of nanoscale hybrid lanthanum oxides, with the inter-nano-domain spacing forming mesoporous volume. As the size of these nano-domains increases with concentration, so does the mesoporous volume. The absence of lanthanum hydroxide (La(OH)3) suggests the formation of La2O3 surrounded by lanthanum silicate. PMID:25644988

Ballinger, Benjamin; Motuzas, Julius; Miller, Christopher R.; Smart, Simon; Diniz da Costa, João C.

2015-01-01

227

Nanoscale assembly of lanthanum silica with dense and porous interfacial structures.  

PubMed

This work reports on the nanoscale assembly of hybrid lanthanum oxide and silica structures, which form patterns of interfacial dense and porous networks. It was found that increasing the molar ratio of lanthanum nitrate to tetraethyl orthosilicate (TEOS) in an acid catalysed sol-gel process alters the expected microporous metal oxide silica structure to a predominantly mesoporous structure above a critical lanthanum concentration. This change manifests itself by the formation of a lanthanum silicate phase, which results from the reaction of lanthanum oxide nanoparticles with the silica matrix. This process converts the microporous silica into the denser silicate phase. Above a lanthanum to silica ratio of 0.15, the combination of growth and microporous silica consumption results in the formation of nanoscale hybrid lanthanum oxides, with the inter-nano-domain spacing forming mesoporous volume. As the size of these nano-domains increases with concentration, so does the mesoporous volume. The absence of lanthanum hydroxide (La(OH)3) suggests the formation of La2O3 surrounded by lanthanum silicate. PMID:25644988

Ballinger, Benjamin; Motuzas, Julius; Miller, Christopher R; Smart, Simon; Diniz da Costa, João C

2015-01-01

228

Formation of a stratified lanthanum silicate dielectric by reaction with Si(001)  

NASA Astrophysics Data System (ADS)

We have characterized the structure and electrical properties of lanthanum silicate layers formed on Si(001) by reaction of lanthanum oxide with the substrate. Postoxidation of the deposited films results in the formation of a stacked dielectric with a lanthanum silicate layer atop an interfacial layer of SiO2. This structure combines the interfacial properties of SiO2 with the large permittivity of lanthanum silicate. Although the resulting film has leakage properties far superior to an equivalent thickness of SiO2, there is evidence of significant quantities of ionic charge that must be eliminated before use in electronic applications.

Copel, M.; Cartier, E.; Ross, F. M.

2001-03-01

229

Effect of pressure on the magnetic properties of lanthanum manganite  

SciTech Connect

The crystalline structure of pure lanthanum manganite under external hydrostatic pressure has been studied. The behavior of magnetic properties and nuclear magnetic resonance (NMR) spectra under these conditions is theoretically predicted. It is shown that an increase in the Neel temperature with pressure is not only caused by the general contraction of the crystal, but is also related to certain peculiarities in the baric behavior of the orbital structure.

Gonchar', L. E., E-mail: Lyudmila.Gonchar@usu.ru; Leskova, Yu. V.; Nikiforov, A. E. [Ural State University (Russian Federation); Kozlenko, D. P. [Joint Institute for Nuclear Research (Russian Federation)

2010-08-15

230

Investigation of lanthanum scintillators for 3-D PET  

Microsoft Academic Search

The main thrust for this work is the investigation and design of a positron emission tomography (PET) scanner based on new Lanthanum Halide scintillators. In three-dimensional (3-D) PET the major limitations are scanner dead-time and ability to reject randoms and scatter. Therefore, to reach the full potential of 3-D PET requires a scintillator with good timing resolution and good energy

S. Surti; J. S. Karp; G. Muehllehner; P. S. Raby

2003-01-01

231

Lanthanum halide nanoparticle scintillators for nuclear radiation detection  

SciTech Connect

Nanoparticles with sizes <10 nm were fabricated and characterized for their nanocomposite radiation detector properties. This work investigated the properties of several nanostructured radiation scintillators, in order to determine the viability of using scintillators employing nanostructured lanthanum trifluoride. Preliminary results of this investigation are consistent with the idea that these materials have an intrinsic response to nuclear radiation that may be correlated to the energy of the incident radiation.

Guss, Paul; Guise, Ronald [Remote Sensing Laboratory, P.O. Box 98521, M/S RSL-48, Las Vegas, Nevada 89193 (United States); Yuan Ding [National Security Technologies, LLC, Los Alamos Operations, P.O. Box 809, M/S LAO/C320, Los Alamos, New Mexico 87544 (United States); Mukhopadhyay, Sanjoy [Remote Sensing Laboratory-Andrews, Building 1783, Arnold Avenue Andrews AFB, Maryland 20762 (United States); O'Brien, Robert; Lowe, Daniel [University of Nevada, Las Vegas, 4505 S. Maryland Parkway, Las Vegas, Nevada 89154 (United States); Kang Zhitao; Menkara, Hisham [Georgia Tech Research Institute, 925 Dalney St., Atlanta, Georgia 30332 (United States); Nagarkar, Vivek V. [RMD, Inc., 44 Hunt Street, Watertown, Massachusetts 02472 (United States)

2013-02-14

232

Yttrium and lanthanum hydride films with switchable optical properties  

Microsoft Academic Search

We discovered that yttrium-, lanthanum- and rare earth-hydride films exhibit remarkable optical properties near their metal–insulator transition: the dihydrides are metallic and shiny while the trihydrides are semiconducting and transparent. The transition between the shiny and transparent state is reversible and can simply be induced by changing the H2 gas pressure or the voltage in an electrolytic cell. No deterioration

R Griessen; J. N Huiberts; M Kremers; A. T. M van Gogh; N. J Koeman; J. P Dekker; P. H. L Notten

1997-01-01

233

Will Lanthanum Halide Scintillators Make NaI(Tl) Obsolete?  

NASA Astrophysics Data System (ADS)

The commercial availability of lanthanum halide scintillators (LaCl3:Ce and LaBr3:Ce) has been much anticipated due to their significantly better resolution (3-4% at 662 keV) relative to NaI(Tl). Unfortunately, our initial investigation of these scintillators revealed significant alpha contamination quite apparent in background spectra. Using measurements of the detector in coincidence with a HPGe detector, we identified the alpha-contaminant as Ac-227. Since this time, the alpha contamination has been substantially reduced so that a second contaminant, La-138 (a beta, gamma, and x-ray source) has become the dominant contaminant in the material. Commercially-available sizes of lanthanum halide scintillators have now reached sizes suitable for handheld Radioactive Isotope Identification Devices (RIIDs). To study the potential of this new material for RIIDs we performed a series of measurements comparing a 1.5'' x 1.5'' LaBr3 detector with an Exploranium GR-135 RIID, which contains a 1.5'' x 2.2'' NaI(Tl) detector. Measurements were taken for short timeframes of seconds to minutes, as typifies RIID usage. Measurements included examples of naturally occurring radioactive material (NORM) typically found in cargo. Of particular interest was the extent to which interference between the La-138 contaminant and K-40, a radioisotope commonly found in NORM, compromise the lanthanum halide performance. Example spectra, detector comparisons and results will be shown.

Milbrath, Brian

2006-05-01

234

Magnetoresistance of lanthanum manganites with activation-type conductivity  

SciTech Connect

The temperature dependence of the resistivity and magnetic moment of La{sub 0.85}Ba{sub 0.15}MnO{sub 3} and La{sub 0.85}Sr{sub 0.15}MnO{sub 3} manganite single crystals in magnetic fields up to 90 kOe is investigated. Analysis of the experimental results shows that the magnetoresistance of lanthanum manganites far from the Curie temperature T{sub C} can be described quantitatively by the s-d model normally used for ferromagnets and taking into account only the exchange interaction between the spins of charge carriers and magnetic moments. These data also show that the features of lanthanum manganites responsible for colossal magnetoresistance (CMR) are manifested in a narrow temperature interval {delta}T Almost-Equal-To 20 K near T{sub C}. Our results suggest a CMR mechanism analogous to the mechanism of giant magnetoresistance (GMR) observed in Fe/Cr-type multilayers with nanometer layer thickness. The nanostratification observed in lanthanum manganites and required for GMR can be described taking into account the spread in T{sub C} in the CMR range {delta}T.

Kurkin, M. I., E-mail: kurkin@imp.uran.ru; Neifeld, E. A.; Korolev, A. V.; Ugryumova, N. A.; Gudin, S. A.; Gapontseva, N. N. [Russian Academy of Sciences, Institute of Metal Physics, Ural Branch (Russian Federation)

2013-05-15

235

Engineered hydrochar composites for phosphorus removal/recovery: Lanthanum doped hydrochar prepared by hydrothermal carbonization of lanthanum pretreated rice straw.  

PubMed

Engineered hydrochar composites (EHC) were synthesized by hydrothermal carbonization (HTC) of lanthanum pretreated rice straw. The as-prepared composite with about 30% lanthanum content showed greater P removal potential than La(OH)3, indicating the synergistic effect of hydrochar and lanthanum in P removal. The adsorption results showed that EHC showed great P adsorption capacities (>50mgPg(-1)) in the pH range of 2.5-10.5, and the presence of competing anions had little negative effects on P adsorption on EHC. The equilibrium time for P adsorption on EHC was considerably reduced under acid condition (12h) compared to alkaline condition (48h). The maximum adsorption capacity was 61.57mgPg(-1) according to Langmuir isotherms. These results suggested that EHC was highly effective in P adsorption in a wide range of pH and the presence of competing anions, thus EHC could be a promising adsorbent for phosphorus removal/recovery from wastewater. PMID:24727355

Dai, Lichun; Wu, Bo; Tan, Furong; He, Mingxiong; Wang, Wenguo; Qin, Han; Tang, Xiaoyu; Zhu, Qili; Pan, Ke; Hu, Qichun

2014-06-01

236

A new large area lanthanum hexaboride plasma source C. M. Cooper, W. Gekelman, P. Pribyl, and Z. Lucky  

E-print Network

A new large area lanthanum hexaboride plasma source C. M. Cooper, W. Gekelman, P. Pribyl, and Z July 2010; published online 16 August 2010 A new 18 18 cm2 active area lanthanum hexaboride LaB6 plasma in 1951,1 lanthanum hexaboride LaB6 has been investigated as a source for electron beams, ion sources, ion

California at Los Angles, University of

237

Nickel-and Ruthenium-Doped Lanthanum Chromite Anodes: Effects of Nanoscale Metal Precipitation on Solid Oxide  

E-print Network

Nickel- and Ruthenium-Doped Lanthanum Chromite Anodes: Effects of Nanoscale Metal Precipitation This paper compares the effects of Ni and Ru dopants in lanthanum chromite anodes by correlating structural microscope observations showed that nanoclusters of Ni or Ru metal precipitated onto lanthanum chromite La0

Marks, Laurence D.

238

Intrinsic and coupling-induced elastic nonlinearity of lanthanum-doped lead magnesium niobatelead titanate electrostrictive ceramic  

E-print Network

Intrinsic and coupling-induced elastic nonlinearity of lanthanum-doped lead magnesium niobate July 2000 The elastic nonlinearity of lanthanum-doped lead magnesium niobate­lead titanate the measurement results on the elastic nonlinearity of PMN-PT and their field dependence. The lanthanum-doped PMN

Cao, Wenwu

239

33 CFR 151.2030 - Who is responsible for determining when to use the safety exemption?  

Code of Federal Regulations, 2010 CFR

...determining when to use the safety exemption? 151.2030 Section 151.2030 Navigation and Navigable Waters COAST GUARD...Nonindigenous Species in Waters of the United States § 151.2030 Who is responsible for determining when to use...

2010-07-01

240

33 CFR 151.2015 - Is a vessel in innocent passage exempt from the mandatory requirements?  

Code of Federal Regulations, 2011 CFR

...passage exempt from the mandatory requirements? 151.2015 Section 151.2015 Navigation and Navigable Waters COAST GUARD...Nonindigenous Species in Waters of the United States § 151.2015 Is a vessel in innocent passage exempt from the...

2011-07-01

241

33 CFR 151.2005 - To which vessels does this subpart apply?  

Code of Federal Regulations, 2010 CFR

... To which vessels does this subpart apply? 151.2005 Section 151.2005 Navigation and Navigable Waters COAST GUARD...Nonindigenous Species in Waters of the United States § 151.2005 To which vessels does this subpart apply?...

2010-07-01

242

32 CFR 151.5 - Reports on the exercise of foreign criminal jurisdiction.  

Code of Federal Regulations, 2011 CFR

... 2011-07-01 2011-07-01 false Reports on the exercise of foreign criminal jurisdiction. 151.5 Section 151...FORCES POLICIES AND INFORMATION § 151.5 Reports on the exercise of foreign criminal jurisdiction. The following...

2011-07-01

243

33 CFR 151.2015 - Is a vessel in innocent passage exempt from the mandatory requirements?  

Code of Federal Regulations, 2010 CFR

...passage exempt from the mandatory requirements? 151.2015 Section 151.2015 Navigation and Navigable Waters COAST GUARD...Nonindigenous Species in Waters of the United States § 151.2015 Is a vessel in innocent passage exempt from the...

2010-07-01

244

19 CFR 151.47 - Optional entry of net quantity of petroleum or petroleum products.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Optional entry of net quantity of petroleum or petroleum products. 151.47 Section 151.47 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.47 Optional...

2012-04-01

245

19 CFR 151.47 - Optional entry of net quantity of petroleum or petroleum products.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Optional entry of net quantity of petroleum or petroleum products. 151.47 Section 151.47 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.47 Optional...

2011-04-01

246

19 CFR 151.47 - Optional entry of net quantity of petroleum or petroleum products.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Optional entry of net quantity of petroleum or petroleum products. 151.47 Section 151.47 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.47 Optional...

2014-04-01

247

19 CFR 151.47 - Optional entry of net quantity of petroleum or petroleum products.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Optional entry of net quantity of petroleum or petroleum products. 151.47 Section 151.47 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.47 Optional...

2013-04-01

248

19 CFR 151.47 - Optional entry of net quantity of petroleum or petroleum products.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Optional entry of net quantity of petroleum or petroleum products. 151.47 Section 151.47 Customs...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.47 Optional...

2010-04-01

249

50 CFR 550.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2014 CFR

...151 Section 550.151 Wildlife and Fisheries MARINE MAMMAL COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY MARINE MAMMAL COMMISSION § 550.151 Program accessibility: New...

2014-10-01

250

14 CFR 151.123 - Procedures: Offer; amendment; acceptance; advance planning agreement.  

Code of Federal Regulations, 2010 CFR

...Offer; amendment; acceptance; advance planning agreement. 151.123 Section 151...AIRPORTS Rules and Procedures for Advance Planning and Engineering Proposals § 151.123...Offer; amendment; acceptance; advance planning agreement. (a) The procedures...

2010-01-01

251

19 CFR 151.111 - Cigars, cigarillos, and tobacco of Cuban origin.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Cigars, cigarillos, and tobacco of Cuban origin. 151.111 Section 151...OF MERCHANDISE Cigars, Cigarillos, and Tobacco § 151.111 Cigars, cigarillos, and tobacco of Cuban origin. The tobacco...

2013-04-01

252

19 CFR 151.111 - Cigars, cigarillos, and tobacco of Cuban origin.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Cigars, cigarillos, and tobacco of Cuban origin. 151.111 Section 151...OF MERCHANDISE Cigars, Cigarillos, and Tobacco § 151.111 Cigars, cigarillos, and tobacco of Cuban origin. The tobacco...

2010-04-01

253

19 CFR 151.111 - Cigars, cigarillos, and tobacco of Cuban origin.  

Code of Federal Regulations, 2014 CFR

...2014-04-01 false Cigars, cigarillos, and tobacco of Cuban origin. 151.111 Section 151...OF MERCHANDISE Cigars, Cigarillos, and Tobacco § 151.111 Cigars, cigarillos, and tobacco of Cuban origin. The tobacco...

2014-04-01

254

19 CFR 151.111 - Cigars, cigarillos, and tobacco of Cuban origin.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Cigars, cigarillos, and tobacco of Cuban origin. 151.111 Section 151...OF MERCHANDISE Cigars, Cigarillos, and Tobacco § 151.111 Cigars, cigarillos, and tobacco of Cuban origin. The tobacco...

2012-04-01

255

19 CFR 151.111 - Cigars, cigarillos, and tobacco of Cuban origin.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Cigars, cigarillos, and tobacco of Cuban origin. 151.111 Section 151...OF MERCHANDISE Cigars, Cigarillos, and Tobacco § 151.111 Cigars, cigarillos, and tobacco of Cuban origin. The tobacco...

2011-04-01

256

19 CFR 151.91 - Brix values of unconcentrated natural fruit juices.  

Code of Federal Regulations, 2014 CFR

... Brix values of unconcentrated natural fruit juices. 151.91 Section 151.91...SAMPLING, AND TESTING OF MERCHANDISE Fruit Juices § 151.91 Brix values of unconcentrated natural fruit juices. The following values...

2014-04-01

257

19 CFR 151.91 - Brix values of unconcentrated natural fruit juices.  

Code of Federal Regulations, 2011 CFR

... Brix values of unconcentrated natural fruit juices. 151.91 Section 151.91...SAMPLING, AND TESTING OF MERCHANDISE Fruit Juices § 151.91 Brix values of unconcentrated natural fruit juices. The following values...

2011-04-01

258

19 CFR 151.91 - Brix values of unconcentrated natural fruit juices.  

Code of Federal Regulations, 2013 CFR

... Brix values of unconcentrated natural fruit juices. 151.91 Section 151.91...SAMPLING, AND TESTING OF MERCHANDISE Fruit Juices § 151.91 Brix values of unconcentrated natural fruit juices. The following values...

2013-04-01

259

19 CFR 151.91 - Brix values of unconcentrated natural fruit juices.  

Code of Federal Regulations, 2012 CFR

... Brix values of unconcentrated natural fruit juices. 151.91 Section 151.91...SAMPLING, AND TESTING OF MERCHANDISE Fruit Juices § 151.91 Brix values of unconcentrated natural fruit juices. The following values...

2012-04-01

260

22 CFR 151.10 - Minimum limits of insurance for aircraft and/or vessels.  

Code of Federal Regulations, 2014 CFR

...aircraft and/or vessels. 151.10 Section 151.10 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.10 Minimum limits of insurance for...

2014-04-01

261

22 CFR 151.10 - Minimum limits of insurance for aircraft and/or vessels.  

Code of Federal Regulations, 2013 CFR

...aircraft and/or vessels. 151.10 Section 151.10 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.10 Minimum limits of insurance for...

2013-04-01

262

22 CFR 151.10 - Minimum limits of insurance for aircraft and/or vessels.  

Code of Federal Regulations, 2011 CFR

...aircraft and/or vessels. 151.10 Section 151.10 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.10 Minimum limits of insurance for...

2011-04-01

263

22 CFR 151.10 - Minimum limits of insurance for aircraft and/or vessels.  

Code of Federal Regulations, 2010 CFR

...aircraft and/or vessels. 151.10 Section 151.10 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.10 Minimum limits of insurance for...

2010-04-01

264

22 CFR 151.8 - Evidence of insurance for motor vehicles.  

Code of Federal Regulations, 2014 CFR

...insurance for motor vehicles. 151.8 Section 151.8 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.8 Evidence of insurance for motor...

2014-04-01

265

22 CFR 151.4 - Minimum limits for motor vehicle insurance.  

Code of Federal Regulations, 2010 CFR

...motor vehicle insurance. 151.4 Section 151.4 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.4 Minimum limits for motor vehicle...

2010-04-01

266

22 CFR 151.7 - Policy terms consistent with the Act.  

Code of Federal Regulations, 2014 CFR

...consistent with the Act. 151.7 Section 151.7 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.7 Policy terms consistent with the...

2014-04-01

267

22 CFR 151.8 - Evidence of insurance for motor vehicles.  

Code of Federal Regulations, 2012 CFR

...insurance for motor vehicles. 151.8 Section 151.8 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.8 Evidence of insurance for motor...

2012-04-01

268

22 CFR 151.4 - Minimum limits for motor vehicle insurance.  

Code of Federal Regulations, 2011 CFR

...motor vehicle insurance. 151.4 Section 151.4 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.4 Minimum limits for motor vehicle...

2011-04-01

269

22 CFR 151.4 - Minimum limits for motor vehicle insurance.  

Code of Federal Regulations, 2013 CFR

...motor vehicle insurance. 151.4 Section 151.4 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.4 Minimum limits for motor vehicle...

2013-04-01

270

22 CFR 151.7 - Policy terms consistent with the Act.  

Code of Federal Regulations, 2011 CFR

...consistent with the Act. 151.7 Section 151.7 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.7 Policy terms consistent with the...

2011-04-01

271

22 CFR 151.8 - Evidence of insurance for motor vehicles.  

Code of Federal Regulations, 2011 CFR

...insurance for motor vehicles. 151.8 Section 151.8 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.8 Evidence of insurance for motor...

2011-04-01

272

22 CFR 151.7 - Policy terms consistent with the Act.  

Code of Federal Regulations, 2012 CFR

...consistent with the Act. 151.7 Section 151.7 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.7 Policy terms consistent with the...

2012-04-01

273

22 CFR 151.10 - Minimum limits of insurance for aircraft and/or vessels.  

Code of Federal Regulations, 2012 CFR

...aircraft and/or vessels. 151.10 Section 151.10 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.10 Minimum limits of insurance for...

2012-04-01

274

22 CFR 151.7 - Policy terms consistent with the Act.  

Code of Federal Regulations, 2013 CFR

...consistent with the Act. 151.7 Section 151.7 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.7 Policy terms consistent with the...

2013-04-01

275

22 CFR 151.8 - Evidence of insurance for motor vehicles.  

Code of Federal Regulations, 2013 CFR

...insurance for motor vehicles. 151.8 Section 151.8 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.8 Evidence of insurance for motor...

2013-04-01

276

22 CFR 151.7 - Policy terms consistent with the Act.  

Code of Federal Regulations, 2010 CFR

...consistent with the Act. 151.7 Section 151.7 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.7 Policy terms consistent with the...

2010-04-01

277

22 CFR 151.4 - Minimum limits for motor vehicle insurance.  

Code of Federal Regulations, 2014 CFR

...motor vehicle insurance. 151.4 Section 151.4 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.4 Minimum limits for motor vehicle...

2014-04-01

278

22 CFR 151.4 - Minimum limits for motor vehicle insurance.  

Code of Federal Regulations, 2012 CFR

...motor vehicle insurance. 151.4 Section 151.4 Foreign Relations DEPARTMENT OF STATE DIPLOMATIC PRIVILEGES AND IMMUNITIES COMPULSORY LIABILITY INSURANCE FOR DIPLOMATIC MISSIONS AND PERSONNEL § 151.4 Minimum limits for motor vehicle...

2012-04-01

279

20 CFR 365.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2014 CFR

...Program accessibility: New construction and alterations. 365.151 Section 365.151 Employees' Benefits RAILROAD RETIREMENT BOARD...ACTIVITIES CONDUCTED BY THE RAILROAD RETIREMENT BOARD § 365.151 Program accessibility: New construction...

2014-04-01

280

20 CFR 365.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2011 CFR

...Program accessibility: New construction and alterations. 365.151 Section 365.151 Employees' Benefits RAILROAD RETIREMENT BOARD...ACTIVITIES CONDUCTED BY THE RAILROAD RETIREMENT BOARD § 365.151 Program accessibility: New construction...

2011-04-01

281

47 CFR 1.51 - Number of copies of pleadings, briefs and other papers.  

Code of Federal Regulations, 2010 CFR

...copies of pleadings, briefs and other papers. 1.51 Section 1.51 Telecommunication...Procedure Pleadings, Briefs, and Other Papers § 1.51 Number of copies of pleadings, briefs and other papers. Except as otherwise...

2010-10-01

282

46 CFR 151.50-50 - Elemental phosphorus in water.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 false Elemental phosphorus in water. 151.50-50 Section...Requirements § 151.50-50 Elemental phosphorus in water. (a) Tanks shall be...head equivalent to the design lading of phosphorus and its water blanket...

2013-10-01

283

46 CFR 151.50-50 - Elemental phosphorus in water.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Elemental phosphorus in water. 151.50-50 Section...Requirements § 151.50-50 Elemental phosphorus in water. (a) Tanks shall be...head equivalent to the design lading of phosphorus and its water blanket...

2010-10-01

284

46 CFR 151.50-50 - Elemental phosphorus in water.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Elemental phosphorus in water. 151.50-50 Section...Requirements § 151.50-50 Elemental phosphorus in water. (a) Tanks shall be...head equivalent to the design lading of phosphorus and its water blanket...

2011-10-01

285

46 CFR 151.50-50 - Elemental phosphorus in water.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Elemental phosphorus in water. 151.50-50 Section...Requirements § 151.50-50 Elemental phosphorus in water. (a) Tanks shall be...head equivalent to the design lading of phosphorus and its water blanket...

2012-10-01

286

46 CFR 151.50-50 - Elemental phosphorus in water.  

Code of Federal Regulations, 2014 CFR

... 2014-10-01 false Elemental phosphorus in water. 151.50-50 Section...Requirements § 151.50-50 Elemental phosphorus in water. (a) Tanks shall be...head equivalent to the design lading of phosphorus and its water blanket...

2014-10-01

287

41 CFR 105-71.151 - Later disallowances and adjustments.  

Code of Federal Regulations, 2010 CFR

41 ? Public Contracts and Property Management ? 3 ? 2010-07-01 ? 2010-07-01 ? false ? Later disallowances and adjustments. ? 105-71.151 ? Section 105-71.151 ? Public Contracts and Property Management ? Federal Property Management Regulations System (Continued) ? GENERAL SERVICES ADMINISTRATION...

2010-07-01

288

Long-term effects of lanthanum intake on the neurobehavioral development of the rat  

Microsoft Academic Search

The effects of subchronic exposure to lanthanum on rats' physical and neurobehavioral development were investigated. Wistar rats were exposed to lanthanum through oral administration at 0, 0.1, 2, and 40 mg\\/kg concentrations from gestation day 0 through 5 months of age. Prior to weaning of the pups, physical parameters and neurobehaviors were assessed, including body weight gain, pinna detachment, eye

Liuxing Feng; Haiqing Xiao; Xiao He; Zijie Li; Fuliang Li; Nianqing Liu; Zhifang Chai; Yuliang Zhao; Zhiyong Zhang

2006-01-01

289

Cytogenetic and developmental toxicity of cerium and lanthanum to sea urchin embryos  

E-print Network

Cytogenetic and developmental toxicity of cerium and lanthanum to sea urchin embryos Rahime Oral1 was to evaluate the toxicity of two rare earth elements (REE), cerium and lanthanum on sea urchin embryos and sperm. Sea urchin (Paracentrotus lividus) embryos were reared for 72 h in Ce(IV)- or La

Paris-Sud XI, Université de

290

Lanthanum hexaaluminate — novel thermal barrier coatings for gas turbine applications — materials and process development  

Microsoft Academic Search

Lanthanum hexaaluminate (LHA) with a magnetoplumbite structure is a promising competitor to yttria partially stabilized zirconia (Y-PSZ) as a thermal barrier coating (TBC), since most zirconia coatings age significantly, including undesired densification at temperatures exceeding 1100 °C. The microstructure of calcined lanthanum hexaaluminate powders and thermally sprayed coatings show a platelet structure. The magnetoplumbite structure is characterized by the highly

R. Gadow; M. Lischka

2002-01-01

291

Lanthanum permeability of tight junctions along the collecting duct of the rat  

Microsoft Academic Search

Lanthanum permeability of tight junctions along the collecting duct of the rat. The permeability of the tight junctions (zonulae occludentes) was evaluated along the entire length of the collecting duct of the rat using a lanthanum tracer technique. Nine rats with hereditary hypothalamic diabetes insipidus were studied using standard micropuncture and clearance techniques. Glomerular filtration rate (GFR) estimated from inulin

C Craig Tisher; William E Yarger

1975-01-01

292

Humidity sensitivity of composite material of lanthanum ferrite\\/polymer quaternary acrylic resin  

Microsoft Academic Search

The sensing properties of the humidity sensor made of composite material of nanocrystalline lanthanum ferrite (LaFeO3) and polymer quaternary acrylic resin are investigated and compared with those of nanocrystalline lanthanum ferrite, including the sensitivity, the hysteresis, and the response and recover times. The measurement frequency influences both the linearity of the curves of resistance via relative humidity (RH) and the

Jing Wang; Feng-Qing Wu; Kai-He Shi; Xiao-Hua Wang; Peng-Po Sun

2004-01-01

293

Half-life of {sup 151}Sm remeasured  

SciTech Connect

The half-life of {sup 151}Sm was redetermined and compared with literature values. A {sup 151}Sm{sub 2}O{sub 3} sample was produced by exposing {sup 150}Sm{sub 2}O{sub 3} to the high neutron flux of the heavy water research reactor at the China Institute of Atomic Energy (CIAE). The number of atoms and the activity of {sup 151}Sm in the sample were measured by thermal ionization mass spectrometry (TIMS) and liquid scintillation counting (LSC), respectively. The half-life of {sup 151}Sm determined in this work is 96.6 yr, with a standard uncertainty of 2.4 yr based on a quadratic summation of the uncertainty components from the measurements of the number of atoms and the activity of {sup 151}Sm.

He Ming; Shen Hongtao; Shi Guozhu; Yin Xinyi; Tian Weizhi; Jiang Shan [Department of Nuclear Physics, China Institute of Atomic Energy, Post Office Box 275-50, Beijing 102413 (China)

2009-12-15

294

Expansion on reduction of calcium doped lanthanum chromite  

SciTech Connect

Doped lanthanum chromites have been considered as interconnect materials for the solid oxide fuel cell (SOFC) because of their favorable chemical and electrical properties under both oxidizing and reducing environments. Several investigators have studied the materials properties of the doped lanthanum chromites to optimize their overall performance as an interconnect material. These properties include electrical conductivity, thermal expansion, sinterability, and chemical compatibility with other cell components. These properties are optimized by the amount of dopants substituted into chromite which are usually Ca or Sr. Figure 1 shows the range of values for these properties. Another important characteristic becoming more of a concern as investigators are building SOFC stacks is that doped lanthanum chromite expands when reduced in a low oxygen partial pressure (pO{sub 2}) (<10{sup -12} atm). Plates used to separate oxidizing and fuel gases can deform because of the pO{sub 2} gradient across the interconnect material. This presentation is a summary of work which will be presented at the Fourth International Symposium on Solid Oxide Fuel Cells. In this article, the possible causes of expansion on reduction of the interconnect will be discussed by using a two-dimensional crystal model. The biaxial strain of the stack is calculated under the assumption that the cell components are forced to remain planar. From this, the maximum stress buildup in the interconnect and electrolyte is estimated. In addition, the effects of thermal expansion mismatch and expansion on reduction of the interconnect are compared, and the optimum interconnect composition from a mechanical standpoint is reported.

Carter, J.D.; Hendriksen, P.V.; Mogensen, M. [Riso National Lab., Roskilde (Denmark). Materials Dept.

1995-07-01

295

Lanthanum oxide as a new ultraviolet radiation dosimeter  

NASA Astrophysics Data System (ADS)

The sensitivity of thermoluminescence detectors based on commercial lanthanum oxide (La2O3) for beta, gamma, and UV radiation has been investigated. The thermal activation energies were estimated using the Tstop technique. A linear response curve to ultraviolet radiation was obtained over the exposure time ranging from 1 to 120 min. A fading study over a period of 14 days shows that the UV-exposed aliquots faded by 48% when exposed for 30 min. The deep ultraviolet response for ?=254 nm makes La2O3 suitable for photon detectors and dosimeters.

Soliman, C.; Hussein, M. A.

296

Spectroscopy of vanadium (III) doped gallium lanthanum sulphide chalcogenide glass  

E-print Network

Vanadium doped gallium lanthanum sulphide glass (V:GLS) displays three absorption bands at 580, 730 and 1155 nm identified by photoluminescence excitation measurements. Broad photoluminescence, with a full width half maximum (FWHM) of 500 nm, is observed peaking at 1500 nm when exciting at 514, 808 and 1064 nm. The fluorescence lifetime and quantum efficiency at 300 K were measured to be 33.4 us and 4 % respectively. From the available spectroscopic data we propose the vanadium ions valence to be 3+ and be in tetrahedral coordination The results indicate potential for development of a laser or optical amplifier based on V:GLS.

Hughes, M; Rutt, H; Hewak, D

2014-01-01

297

Sinterability and electrical conductivity of calcium-doped lanthanum chromites  

Microsoft Academic Search

Calcium-doped lanthanum chromites, (La1-xCax) (Cr1-y Cay O3, have been synthesized to investigate effects of calcium doping on sinterability and electrical conductivity. X-ray diffractometric results have revealed that in addition to normal perovskites (La1-xCaxCrO3), chromium-deficient perovskites can exist as a single phase in the composition region 0.1 x < 0.3, although the deficit of chromium is small. These chromium-deficient perovskites show

N. Sakai; T. Kawada; H. Yokokawa; M. Dokiya; T. Iwata

1990-01-01

298

Proton-Implanted Planar Waveguide in Gallium Lanthanum Sulphide Glass  

NASA Astrophysics Data System (ADS)

Owing to the remarkable properties of chalcogenide glasses, chalcogenide optical waveguides should play a significant role in the development of integrated optics. This work demonstrates that an optical waveguide can be obtained by a simple proton implantation in gallium lanthanum sulphide (GLS) glass. Two modes exist in the waveguide at a wavelength of 632.8 nm and the refractive index profile of the waveguide is reconstructed. The near-field pattern of the transmitted light is obtained, and the propagation loss is about 3.2 dB/cm for the present waveguide.

Qiu, Feng; Narusawa, Tadashi

2010-09-01

299

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

SciTech Connect

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

Menaka [Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi-110016 (India)] [Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi-110016 (India); Patra, Rajkumar; Ghosh, Santanu [Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi-110016 (India)] [Department of Physics, Indian Institute of Technology, Hauz Khas, New Delhi-110016 (India); Ganguli, Ashok K., E-mail: ashok@chemistry.iitd.ac.in [Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi-110016 (India)

2012-10-15

300

The evolution mechanism of the dislocation loops in irradiated lanthanum doped cerium oxide  

NASA Astrophysics Data System (ADS)

Cerium dioxide, a non-radioactive surrogate of uranium dioxide, is useful for simulating the radiation responses of uranium dioxide and mixed oxide fuel (MOX). Controlled additions of lanthanum can also be used to form various levels of lattice oxide or anion vacancies. In previous transmission electron microscopy (TEM) experimental studies, the growth rate of dislocation loops in irradiated lanthanum doped ceria was reported to vary with lanthanum concentration. This work reports findings of the evolution mechanisms of the dislocation loops in cerium oxide with and without lanthanum dopants based on a combination of molecular statics and molecular dynamics simulations. These dislocation loops are found to be b=1/3<111> interstitial type Frank loops. Calculations of the defect energy profiles of the dislocation loops with different structural configurations and radii reveal the basis for preference of nucleation as well as the driving force of growth. Frenkel pair evolution simulations and displacement cascade overlaps simulations were conducted for a variety of lanthanum doping conditions. The nucleation and growth processes of the Frank loop were found to be controlled by the mobility of cation interstitials, which is significantly influenced by the lanthanum doping concentration. Competition mechanisms coupled with the mobility of cation point defects were discovered, and can be used to explain the lanthanum effects observed in experiments.

Miao, Yinbin; Aidhy, Dilpuneet; Chen, Wei-Ying; Mo, Kun; Oaks, Aaron; Wolf, Dieter; Stubbins, James F.

2014-02-01

301

46 CFR 151.50-81 - Special operating requirements for heat sensitive cargoes.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Special operating requirements for heat sensitive cargoes. 151.50-81 Section 151.50-81...Requirements § 151.50-81 Special operating requirements for heat sensitive cargoes. When table 151.05 refers to this...

2012-10-01

302

46 CFR 151.50-81 - Special operating requirements for heat sensitive cargoes.  

Code of Federal Regulations, 2014 CFR

... 2014-10-01 false Special operating requirements for heat sensitive cargoes. 151.50-81 Section 151.50-81...Requirements § 151.50-81 Special operating requirements for heat sensitive cargoes. When table 151.05 refers to this...

2014-10-01

303

46 CFR 151.50-81 - Special operating requirements for heat sensitive cargoes.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Special operating requirements for heat sensitive cargoes. 151.50-81 Section 151.50-81...Requirements § 151.50-81 Special operating requirements for heat sensitive cargoes. When table 151.05 refers to this...

2011-10-01

304

46 CFR 151.50-81 - Special operating requirements for heat sensitive cargoes.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Special operating requirements for heat sensitive cargoes. 151.50-81 Section 151.50-81...Requirements § 151.50-81 Special operating requirements for heat sensitive cargoes. When table 151.05 refers to this...

2010-10-01

305

46 CFR 151.50-81 - Special operating requirements for heat sensitive cargoes.  

Code of Federal Regulations, 2013 CFR

... 2013-10-01 false Special operating requirements for heat sensitive cargoes. 151.50-81 Section 151.50-81...Requirements § 151.50-81 Special operating requirements for heat sensitive cargoes. When table 151.05 refers to this...

2013-10-01

306

Determination of rare earths in lanthanum oxide by inductively-coupled plasma emission derivative spectrometry.  

PubMed

Rare-earth elements (REE) at ppm levels in lanthanum oxide can be determined without prior separation and preconcentration by use of high-resolution inductively-coupled plasma emission derivative spectrometry (ICPEDS). The calibration graphs are all linear and pass through the origin, even in the presence of large amounts of lanthanum, except those for dysprosium, holmium and ytterbium. The detection limit for each REE is 1-10 mug g in lanthanum oxide. Investigation of various physical and/or spectral interferences shows that good selectivity is obtained by ICPEDS. PMID:18963327

Ishii, H; Satoh, K

1983-02-01

307

Radio-opaque fecal impaction and pseudo-occlusion in a dialyzed patient taking lanthanum carbonate.  

PubMed

Lanthanum therapy is an efficient therapy of hyperphosphoremia by chelating phosphore in the digestive tract. Lanthanum is a silvery white metallic element that belongs to group 3 of the periodic table. This drug is lightly absorbed and has low water solubility. It should be borne in mind that abdominal X-rays of patients taking lanthanum carbonate may have a radio-opaque appearance typical of imaging agents. This characteristic is suggested to confirm adherence of the patient by doing an abdominal X-ray. We describe in our case a particular good compliant patient with slow digestive transit, which ends by pseudo-occlusion. PMID:22118504

Muller, Clotilde; Muller, Sandrine; Sissoko, Aicha; Klein, Alexandre; Faller, Bernadette; Chantrel, Francois

2012-10-01

308

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

DOEpatents

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

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

1980-01-22

309

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

DOEpatents

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

Holcombe, Cressie E. (Knoxville, TN); Kovach, Louis (Oak Ridge, TN); Taylor, Albert J. (Ten Mile, TN)

1981-01-01

310

14 CFR 151.86 - Lighting and electrical work: General.  

Code of Federal Regulations, 2011 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.86 Lighting and electrical work: General. (a) The installing of lighting facilities and...

2011-01-01

311

14 CFR 151.86 - Lighting and electrical work: General.  

Code of Federal Regulations, 2014 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.86 Lighting and electrical work: General. (a) The installing of lighting facilities and...

2014-01-01

312

14 CFR 151.97 - Maintenance and repair.  

Code of Federal Regulations, 2011 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.97 Maintenance and repair. (a) Maintenance work is not airport development as...

2011-01-01

313

14 CFR 151.75 - Preparation of site.  

Code of Federal Regulations, 2011 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.75 Preparation of site. (a) Grading, drainage, and associated items of site...

2011-01-01

314

14 CFR 151.91 - Removal of obstructions.  

Code of Federal Regulations, 2011 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.91 Removal of obstructions. (a) The removal or relocation, or both, of...

2011-01-01

315

14 CFR 151.91 - Removal of obstructions.  

Code of Federal Regulations, 2012 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.91 Removal of obstructions. (a) The removal or relocation, or both, of...

2012-01-01

316

14 CFR 151.86 - Lighting and electrical work: General.  

Code of Federal Regulations, 2012 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.86 Lighting and electrical work: General. (a) The installing of lighting facilities and...

2012-01-01

317

14 CFR 151.91 - Removal of obstructions.  

Code of Federal Regulations, 2013 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.91 Removal of obstructions. (a) The removal or relocation, or both, of...

2013-01-01

318

14 CFR 151.75 - Preparation of site.  

Code of Federal Regulations, 2010 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.75 Preparation of site. (a) Grading, drainage, and associated items of site...

2010-01-01

319

14 CFR 151.86 - Lighting and electrical work: General.  

Code of Federal Regulations, 2010 CFR

...FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRPORTS FEDERAL AID TO AIRPORTS Project Programming Standards § 151.86 Lighting and electrical work: General. (a) The installing of lighting facilities and...

2010-01-01

320

33 CFR 151.1506 - Restriction of operation.  

Code of Federal Regulations, 2014 CFR

...Management for Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1506 Restriction of operation...the requirements of this subpart may be operated in the Great Lakes or the Hudson River, north of the George...

2014-07-01

321

33 CFR 151.1506 - Restriction of operation.  

Code of Federal Regulations, 2012 CFR

...Management for Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1506 Restriction of operation...the requirements of this subpart may be operated in the Great Lakes or the Hudson River, north of the George...

2012-07-01

322

14 CFR 151.125 - Allowable advance planning costs.  

Code of Federal Regulations, 2012 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.125 Allowable...necessary and reasonable planning and engineering services. (b) The allowable advance planning costs consist of planning and engineering expenses necessarily incurred in...

2012-01-01

323

14 CFR 151.125 - Allowable advance planning costs.  

Code of Federal Regulations, 2014 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.125 Allowable...necessary and reasonable planning and engineering services. (b) The allowable advance planning costs consist of planning and engineering expenses necessarily incurred in...

2014-01-01

324

14 CFR 151.111 - Advance planning proposals: General.  

Code of Federal Regulations, 2014 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.111 Advance planning... (a) Each advance planning and engineering proposal must relate to an airport...proposal must relate to planning and engineering for an airport that— (1) Is...

2014-01-01

325

14 CFR 151.125 - Allowable advance planning costs.  

Code of Federal Regulations, 2013 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.125 Allowable...necessary and reasonable planning and engineering services. (b) The allowable advance planning costs consist of planning and engineering expenses necessarily incurred in...

2013-01-01

326

14 CFR 151.125 - Allowable advance planning costs.  

Code of Federal Regulations, 2011 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.125 Allowable...necessary and reasonable planning and engineering services. (b) The allowable advance planning costs consist of planning and engineering expenses necessarily incurred in...

2011-01-01

327

46 CFR 160.151-5 - Incorporation by reference.  

Code of Federal Regulations, 2010 CFR

...Flashlights on Vessels—160.151-21 International Maritime Organization (IMO) Publications Section, 4 Albert Embankment, London SE1 7SR, England Resolution A.689(17)—Recommendation on Testing of Life-saving Appliances, 27...

2010-10-01

328

33 CFR 151.1508 - Revocation of clearance.  

Code of Federal Regulations, 2010 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID SUBSTANCES, GARBAGE...Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1508 Revocation of clearance. A COTP may...

2010-07-01

329

33 CFR 151.1508 - Revocation of clearance.  

Code of Federal Regulations, 2011 CFR

...COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID SUBSTANCES, GARBAGE...Control of Nonindigenous Species in the Great Lakes and Hudson River § 151.1508 Revocation of clearance. A COTP may...

2011-07-01

330

46 CFR 151.50-22 - Hydrochloric acid.  

Code of Federal Regulations, 2013 CFR

... § 151.50-22 Hydrochloric acid. (a) Hydrochloric acid shall be carried in gravity or...which are independent of the vessel's structure provided such tanks...be used to discharge hydrochloric acid from gravity type cargo...

2013-10-01

331

46 CFR 151.50-22 - Hydrochloric acid.  

Code of Federal Regulations, 2010 CFR

... § 151.50-22 Hydrochloric acid. (a) Hydrochloric acid shall be carried in gravity or...which are independent of the vessel's structure provided such tanks...be used to discharge hydrochloric acid from gravity type cargo...

2010-10-01

332

46 CFR 151.50-22 - Hydrochloric acid.  

Code of Federal Regulations, 2012 CFR

... § 151.50-22 Hydrochloric acid. (a) Hydrochloric acid shall be carried in gravity or...which are independent of the vessel's structure provided such tanks...be used to discharge hydrochloric acid from gravity type cargo...

2012-10-01

333

46 CFR 151.50-22 - Hydrochloric acid.  

Code of Federal Regulations, 2011 CFR

... § 151.50-22 Hydrochloric acid. (a) Hydrochloric acid shall be carried in gravity or...which are independent of the vessel's structure provided such tanks...be used to discharge hydrochloric acid from gravity type cargo...

2011-10-01

334

46 CFR 151.50-22 - Hydrochloric acid.  

Code of Federal Regulations, 2014 CFR

... § 151.50-22 Hydrochloric acid. (a) Hydrochloric acid shall be carried in gravity or...which are independent of the vessel's structure provided such tanks...be used to discharge hydrochloric acid from gravity type cargo...

2014-10-01

335

19 CFR 151.45 - Storage tanks bonded as warehouses.  

Code of Federal Regulations, 2012 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.45 Storage tanks bonded as warehouses...Application. Tanks for the storage of imported petroleum or petroleum products in bulk may be bonded as...

2012-04-01

336

19 CFR 151.45 - Storage tanks bonded as warehouses.  

Code of Federal Regulations, 2010 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.45 Storage tanks bonded as warehouses...Application. Tanks for the storage of imported petroleum or petroleum products in bulk may be bonded as...

2010-04-01

337

19 CFR 151.45 - Storage tanks bonded as warehouses.  

Code of Federal Regulations, 2011 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.45 Storage tanks bonded as warehouses...Application. Tanks for the storage of imported petroleum or petroleum products in bulk may be bonded as...

2011-04-01

338

19 CFR 151.45 - Storage tanks bonded as warehouses.  

Code of Federal Regulations, 2013 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.45 Storage tanks bonded as warehouses...Application. Tanks for the storage of imported petroleum or petroleum products in bulk may be bonded as...

2013-04-01

339

19 CFR 151.45 - Storage tanks bonded as warehouses.  

Code of Federal Regulations, 2014 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Petroleum and Petroleum Products § 151.45 Storage tanks bonded as warehouses...Application. Tanks for the storage of imported petroleum or petroleum products in bulk may be bonded as...

2014-04-01

340

24 CFR 982.151 - Annual contributions contract.  

Code of Federal Regulations, 2010 CFR

... § 982.151 Annual contributions contract. (a) Nature of ACC. (1) An annual contributions contract (ACC) is a written contract between HUD and a PHA. Under the ACC, HUD agrees to make payments to the PHA, over a specified...

2010-04-01

341

46 CFR 151.15-10 - Cargo gauging devices.  

Code of Federal Regulations, 2012 CFR

...magnetic coupled), sight glass (protected), electronic probe, magnetic, differential pressure cell. (d) Isolated or...sounding tube due to pressure build up in the cargo tank vapor space. (See § 151.03-43) When cargoes carried at...

2012-10-01

342

46 CFR 151.15-10 - Cargo gauging devices.  

Code of Federal Regulations, 2011 CFR

...magnetic coupled), sight glass (protected), electronic probe, magnetic, differential pressure cell. (d) Isolated or...sounding tube due to pressure build up in the cargo tank vapor space. (See § 151.03-43) When cargoes carried at...

2011-10-01

343

14 CFR 151.117 - Advance planning proposals: Procedures; application.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false Advance planning proposals: Procedures; application...AIRPORTS Rules and Procedures for Advance Planning and Engineering Proposals § 151.117 Advance planning proposals: Procedures;...

2010-01-01

344

19 CFR 151.67 - Sampling by importer.  

Code of Federal Regulations, 2014 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.67 Sampling by importer. The importer may be...supervision in reasonable quantities from the packages of wool or hair designated for examination, provided the bales or bags are...

2014-04-01

345

19 CFR 151.66 - Duty on samples.  

Code of Federal Regulations, 2013 CFR

...OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.66 Duty on samples. Duty shall be assessed and collected on samples taken pursuant to any provision in this...

2013-04-01

346

19 CFR 151.66 - Duty on samples.  

Code of Federal Regulations, 2014 CFR

...OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.66 Duty on samples. Duty shall be assessed and collected on samples taken pursuant to any provision in this...

2014-04-01

347

19 CFR 151.76 - Grading of wool.  

Code of Federal Regulations, 2014 CFR

...OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.76 Grading of wool. (a) Examination for grade. The port director shall cause wool dutiable at a...

2014-04-01

348

19 CFR 151.76 - Grading of wool.  

Code of Federal Regulations, 2012 CFR

...OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.76 Grading of wool. (a) Examination for grade. The port director shall cause wool dutiable at a...

2012-04-01

349

19 CFR 151.76 - Grading of wool.  

Code of Federal Regulations, 2013 CFR

...OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.76 Grading of wool. (a) Examination for grade. The port director shall cause wool dutiable at a...

2013-04-01

350

19 CFR 151.66 - Duty on samples.  

Code of Federal Regulations, 2012 CFR

...OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.66 Duty on samples. Duty shall be assessed and collected on samples taken pursuant to any provision in this...

2012-04-01

351

19 CFR 151.67 - Sampling by importer.  

Code of Federal Regulations, 2013 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.67 Sampling by importer. The importer may be...supervision in reasonable quantities from the packages of wool or hair designated for examination, provided the bales or bags are...

2013-04-01

352

19 CFR 151.67 - Sampling by importer.  

Code of Federal Regulations, 2012 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.67 Sampling by importer. The importer may be...supervision in reasonable quantities from the packages of wool or hair designated for examination, provided the bales or bags are...

2012-04-01

353

33 CFR 151.2000 - Purpose and scope.  

Code of Federal Regulations, 2013 CFR

...WATER Ballast Water Management for Control of Nonindigenous Species in Waters of the United States § 151.2000 Purpose and...16 U.S.C. 4701-4751), as amended by the National Invasive Species Act of...

2013-07-01

354

33 CFR 151.2000 - Purpose and scope.  

Code of Federal Regulations, 2012 CFR

...WATER Ballast Water Management for Control of Nonindigenous Species in Waters of the United States § 151.2000 Purpose and...16 U.S.C. 4701-4751), as amended by the National Invasive Species Act of...

2012-07-01

355

33 CFR 151.2000 - Purpose and scope.  

Code of Federal Regulations, 2014 CFR

...WATER Ballast Water Management for Control of Nonindigenous Species in Waters of the United States § 151.2000 Purpose and...16 U.S.C. 4701-4751), as amended by the National Invasive Species Act of...

2014-07-01

356

46 CFR 151.01-2 - Incorporation by reference.  

Code of Federal Regulations, 2010 CFR

...affected, are: American Society for Nondestructive Testing (ASNT) 4153 Arlingate...Qualification and Certification in Nondestructive Testing” 151.04-7(c)(2...and Pressure Vessel Code Section V, Nondestructive Examination (1986)...

2010-10-01

357

46 CFR 151.01-2 - Incorporation by reference.  

Code of Federal Regulations, 2013 CFR

...affected, are: American Society for Nondestructive Testing (ASNT) 4153 Arlingate...Qualification and Certification in Nondestructive Testing” 151.04-7(c)(2...and Pressure Vessel Code Section V, Nondestructive Examination (1986)...

2013-10-01

358

46 CFR 151.01-2 - Incorporation by reference.  

Code of Federal Regulations, 2014 CFR

...affected, are: American Society for Nondestructive Testing (ASNT) 4153 Arlingate...Qualification and Certification in Nondestructive Testing” 151.04-7(c)(2...and Pressure Vessel Code Section V, Nondestructive Examination (1986)...

2014-10-01

359

46 CFR 151.01-2 - Incorporation by reference.  

Code of Federal Regulations, 2011 CFR

...affected, are: American Society for Nondestructive Testing (ASNT) 4153 Arlingate...Qualification and Certification in Nondestructive Testing” 151.04-7(c)(2...and Pressure Vessel Code Section V, Nondestructive Examination (1986)...

2011-10-01

360

46 CFR 151.01-2 - Incorporation by reference.  

Code of Federal Regulations, 2012 CFR

...affected, are: American Society for Nondestructive Testing (ASNT) 4153 Arlingate...Qualification and Certification in Nondestructive Testing” 151.04-7(c)(2...and Pressure Vessel Code Section V, Nondestructive Examination (1986)...

2012-10-01

361

14 CFR 151.111 - Advance planning proposals: General.  

Code of Federal Regulations, 2011 CFR

...Procedures for Advance Planning and Engineering Proposals § 151.111 ...Each advance planning and engineering proposal must relate...must relate to planning and engineering for an airport that— ...published jointly by FAA and the Civil Aeronautics Board),...

2011-01-01

362

33 CFR 151.61 - Inspection for compliance and enforcement.  

Code of Federal Regulations, 2012 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT...SECURITY (CONTINUED) POLLUTION VESSELS CARRYING...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...from Ships Garbage Pollution and Sewage § 151...within the navigable waters of the United...

2012-07-01

363

33 CFR 151.61 - Inspection for compliance and enforcement.  

Code of Federal Regulations, 2011 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT...SECURITY (CONTINUED) POLLUTION VESSELS CARRYING...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...from Ships Garbage Pollution and Sewage § 151...within the navigable waters of the United...

2011-07-01

364

33 CFR 151.26 - Shipboard oil pollution emergency plans.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Shipboard oil pollution emergency plans. 151.26... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...

2012-07-01

365

33 CFR 151.61 - Inspection for compliance and enforcement.  

Code of Federal Regulations, 2013 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT...SECURITY (CONTINUED) POLLUTION VESSELS CARRYING...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...from Ships Garbage Pollution and Sewage § 151...within the navigable waters of the United...

2013-07-01

366

33 CFR 151.61 - Inspection for compliance and enforcement.  

Code of Federal Regulations, 2014 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT...SECURITY (CONTINUED) POLLUTION VESSELS CARRYING...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...from Ships Garbage Pollution and Sewage § 151...within the navigable waters of the United...

2014-07-01

367

33 CFR 151.26 - Shipboard oil pollution emergency plans.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Shipboard oil pollution emergency plans. 151.26... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...

2013-07-01

368

33 CFR 151.26 - Shipboard oil pollution emergency plans.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Shipboard oil pollution emergency plans. 151.26... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...

2010-07-01

369

33 CFR 151.26 - Shipboard oil pollution emergency plans.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Shipboard oil pollution emergency plans. 151.26... Navigation and Navigable Waters COAST GUARD, DEPARTMENT...HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...

2011-07-01

370

33 CFR 151.61 - Inspection for compliance and enforcement.  

Code of Federal Regulations, 2010 CFR

...Navigation and Navigable Waters COAST GUARD, DEPARTMENT...SECURITY (CONTINUED) POLLUTION VESSELS CARRYING...COMMERCIAL WASTE, AND BALLAST WATER Implementation of...from Ships Garbage Pollution and Sewage § 151...within the navigable waters of the United...

2010-07-01

371

14 CFR 151.111 - Advance planning proposals: General.  

Code of Federal Regulations, 2012 CFR

...Procedures for Advance Planning and Engineering Proposals § 151.111 ...Each advance planning and engineering proposal must relate...must relate to planning and engineering for an airport that— ...published jointly by FAA and the Civil Aeronautics Board),...

2012-01-01

372

14 CFR 151.111 - Advance planning proposals: General.  

Code of Federal Regulations, 2013 CFR

...Procedures for Advance Planning and Engineering Proposals § 151.111 ...Each advance planning and engineering proposal must relate...must relate to planning and engineering for an airport that— ...published jointly by FAA and the Civil Aeronautics Board),...

2013-01-01

373

Electrochemical preparation of nanostructured lanthanum using lanthanum chloride as a precursor in 1-butyl-3-methylimidazolium dicyanamide ionic liquid.  

PubMed

Nanostructured lanthanum was electrochemically prepared on a platinum (Pt) substrate in the room temperature ionic liquid 1-butyl-3-methylimidazolium dicyanamide (BMI-DCA) containing anhydrous LaCl3 at 333 K. The electrochemical reduction behavior of La(iii) was investigated using cyclic voltammetry and chronoamperometry techniques. Cyclic voltammogram revealed that the reduction of La(iii) in BMI-DCA involved an irreversible process controlled by diffusion. Chronoamperometric transient analysis confirmed the diffusion controlled electrodeposition process with the diffusion coefficient of La(iii) species in the range of 10(-10) cm(2) s(-1). The strong complexing capability of DCA(-) anions facilitated the displacement of chloride ligands and induced the solubility of LaCl3. The subsequent coordination of La(iii) and DCA(-) anions forming [La(DCA)4](-) complex anions was monitored by designing amperometric titration experiments. Potentiostatically deposited La-deposits with different nanostructures were characterized by SEM, XRD and XPS analyses. The electrodeposition potential was found to play an important role in controlling the nucleation and growth kinetics of the nanocrystal during the electrodeposition process. Depending on the deposition potential, metallic lanthanum with either nanoparticles or nanoporous structures was obtained. PMID:25589210

Zhang, Q B; Yang, C; Hua, Y X; Li, Y; Dong, P

2015-01-28

374

I-BET151 selectively regulates IL-6 production.  

PubMed

Orchestration of the inflammatory response is crucial for clearing pathogens. Although the production of multiple inflammatory cytokines has been thought to be regulated by common mechanisms, recent evidence indicates that the expression of some cytokines is differentially regulated by epigenetic regulatory mechanisms. In this study, we found that IL-6 production is selectively inhibited by the BET bromodomain protein (BRD) inhibitor I-BET151 in RAW264.7 cells stimulated with lipopolysaccharide (LPS), whereas I-BET151 did not alter the production of several other cytokines (TNF?, IL-1? and IL-10) at the concentration of IBET151 used. I-BET151 prevented the binding of CBP to the promoter of IL-6, but I-BET151 did not affect acetylation, phosphorylation, nuclear translocation, or DNA binding of p65-NF-?B. In vivo, I-BET151 treatment in the experimental autoimmune encephalomyelitis mouse model of multiple sclerosis decreased the early clinical symptoms, which are thought to be dependent on cytokine production. Altogether, these data suggest that targeting epigenetic-related proteins, such as BET proteins, may provide a strategy to reduce inflammation and the severity of inflammatory diseases, such as multiple sclerosis. PMID:24859008

Barrett, Elyse; Brothers, Shaun; Wahlestedt, Claes; Beurel, Eléonore

2014-09-01

375

Morphology-controlled nonaqueous synthesis of anisotropic lanthanum hydroxide nanoparticles  

SciTech Connect

The preparation of lanthanum hydroxide and manganese oxide nanoparticles is presented, based on a nonaqueous sol-gel process involving the reaction of La(OiPr){sub 3} and KMnO{sub 4} with organic solvents such as benzyl alcohol, 2-butanone and a 1:1 vol. mixture thereof. The lanthanum manganese oxide system is highly complex and surprising results with respect to product composition and morphology were obtained. In dependence of the reaction parameters, the La(OH){sub 3} nanoparticles undergo a shape transformation from short nanorods with an average aspect ratio of 2.1 to micron-sized nanofibers (average aspect ratio is more than 59.5). Although not directly involved, KMnO{sub 4} plays a crucial role in determining the particle morphology of La(OH){sub 3}. The reason lies in the fact that KMnO{sub 4} is able to oxidize the benzyl alcohol to benzoic acid, which presumably induces the anisotropic particle growth in [0 0 1] direction upon preferential coordination to the {+-}(1 0 0), {+-}(0 1 0) and {+-}(-110) crystal facets. By adjusting the molar La(OiPr){sub 3}-to-KMnO{sub 4} ratio as well as by using the appropriate solvent mixture it is possible to tailor the morphology, phase purity and microstructure of the La(OH){sub 3} nanoparticles. Postsynthetic thermal treatment of the sample containing La(OH){sub 3} nanofibers and {beta}-MnOOH nanoparticles at the temperature of 800 deg. C for 8 h yielded polyhedral LaMnO{sub 3} and worm-like La{sub 2}O{sub 3} nanoparticles as final products. - Graphical abstract: Lanthanum hydroxide nanoparticles are synthesized based on a nonaqueous sol-gel process involving the reaction of La(OiPr){sub 3} and KMnO{sub 4} with organic solvents such as benzyl alcohol, 2-butanone and a 1:1 vol. mixture thereof. In dependence of the reaction parameters, the La(OH){sub 3} nanoparticles undergo a shape transformation from short nanorods to micron-sized nanofibers.

Djerdj, Igor [ETH Zuerich, Department of Materials, Wolfgang-Pauli-Strasse 10, 8093 Zurich (Switzerland); Department of Physics, Faculty of Science, University of Zagreb, Bijenicka 32, P.O. Box 331, 10002 Zagreb (Croatia); Garnweitner, Georg [Max Planck Institute of Colloids and Interfaces, Research Campus Golm, D-14424 Potsdam (Germany); Sheng Su, Dang [Department of Inorganic Chemistry, Fritz-Haber-Institute of the Max-Planck-Society, Faradayweg 4-6, D-14195 Berlin (Germany); Niederberger, Markus [ETH Zuerich, Department of Materials, Wolfgang-Pauli-Strasse 10, 8093 Zurich (Switzerland)], E-mail: markus.niederberger@mat.ethz.ch

2007-07-15

376

Synthesis and characterization of cerium-doped lanthanum halide colloidal nanocrystals.  

E-print Network

??Cerium-doped bulk lanthanum halide compounds are attractive in the field of high-energy radiation detection due to their interesting properties that include efficient radiation absorption, highly… (more)

Sankar, Krishnaprasad

2009-01-01

377

Phase-Transformation-Induced Twins in Lanthanum Gallate Perovskite (LaGaO3).  

E-print Network

??Pressureless-sintered lanthanum gallate (LaGaO3) ceramics have been analyzed using X-ray diffractometry (XRD), scanning electron and transmission electron microscopy (SEM and TEM), and electron-backscatter diffraction (EBSD).… (more)

Wang, Wei-Lin

2006-01-01

378

Effect of Adsorbed Nitrogen on the Thermionic Emission from Lanthanum Hexaboride  

NASA Technical Reports Server (NTRS)

The emission properties of lanthanum hexaboride in an atmosphere of nitrogen were investigated. The emitter was not poisoned by adsorbed nitrogen. This result should have application to magnetohydrodynamic devices in which electron flow from channel walls is required.

Carter, Arlen F.; Wood, George P.

1959-01-01

379

METAL INTERACTIONS AT SULFIDE MINERAL SURFACES. PART 2. ADSORPTION AND DESORPTION OF LANTHANUM  

EPA Science Inventory

Batch-type adsorption experiments with four sulfide minerals (chalcocite, galena, pyrite, and sphalerite) were used to investigate the adsorption and desorption behavior of lanthanum (III) in the presence of ethylenediaminetetraacetic acid (EDTA), a model humic substance. Linear ...

380

Synthesis of nanocrystalline lanthanum phosphate for low temperature densification to monazite ceramics  

Microsoft Academic Search

Nanocrystalline lanthanum phosphate having average crystallite size 10–12 nm has been prepared by a controlled precipitation reaction from lanthanum nitrate and orthophosphoric acid. The precipitate obtained is washed, dried and calcined in the range 300–800 °C and further sintered as compacted discs at a temperature of 1250 °C. An average grain size of 1–2 ?m was obtained on sintering at

K. Rajesh; B. Sivakumar; P. Krishna Pillai; P. Mukundan; K. G. K. Warrier; V. R. Nair

2004-01-01

381

Dielectric, electromechanical, optical, and mechanical properties of lanthanum-modified lead titanate ceramics  

Microsoft Academic Search

Dielectric, electromechanical, optical, and mechanical properties of hot-pressed lanthanum-modified PbTiOâ ceramics were measured as a function of crystal tetragonality, c\\/a, in a range of tetragonal-to-cubic phases. The results obtained in this study are summarized as follows: The c\\/a changes linearly as a function of lanthanum content. Similarly, Curie point changed linearly and remanent polarization, coercive field, and coupling factors decreased

T. Yamamoto; HIDEJI IGARASHI; KIYOSHI OKAZAKI

1983-01-01

382

The pyroelectric properties of the lanthanum-doped ferroelectric plzt ceramics  

Microsoft Academic Search

The pyroelectric properties of hot-pressed lanthanum doped PZT X\\/65\\/35 ferroelectric ceramics have been studied to evaluate their potential as pyroelectric infrared detector materials. The pyroelectric coefficients ranged from 3.5 × 10-8 to 17.0 × 10-8 (coul\\/cm2 °C) for lanthanum compositions from X = 0 to 8. The dielectric properties have also been measured over this compositional range. Thermal noise is

S. T. Liu; J. D. Heaps; O. N. Tufte

1972-01-01

383

Chronic renal failure is associated with increased tissue deposition of lanthanum after 28-day oral administration  

Microsoft Academic Search

Chronic renal failure is associated with increased tissue deposition of lanthanum after 28-day oral administration.BackgroundLanthanum (La) carbonate has recently been proposed as an alternative, calcium- and aluminum-free phosphate binder for the treatment of hyperphosphatemia of chronic renal failure (CRF). However, the extent to which CRF enhances tissue La accumulation induced by oral La overload above that observed under conditions of

BERNARD LACOUR; ANTHONY LUCAS; DANIEL AUCHÈRE; NADYA RUELLAN; NATALIE MARIAUD DE SERRE PATEY; Tilman B. Drueke

2005-01-01

384

Cerium and lanthanum promote floral initiation and reproductive growth of Arabidopsis thaliana  

Microsoft Academic Search

The effects of cerium and lanthanum on the vegetative growth, floral initiation and reproductive growth of Arabidopsis thaliana were studied. Addition of cerium nitrate (0.5–10 ?M) or lanthanum nitrate (0.5–50 ?M) to the culture medium significantly increased the lengths of primary roots, but had no significant effects on the number of rosette leaves produced per plant, plant heights and dry

Ya-Wen He; Chiang-Shiong Loh

2000-01-01

385

Long-Term Efficacy and Tolerability of Lanthanum Carbonate: Results from a 3Year Study  

Microsoft Academic Search

Background: Control of serum phosphate over the long term is essential in patients with end-stage renal disease. Six-month and 2-year extensions to a 6-month study evaluated the long-term safety, tolerability and efficacy of the new phosphate binder lanthanum carbonate. Methods: Patients who participated in a 6-month, randomized trial comparing lanthanum carbonate with calcium carbonate were eligible for a 24-week, open-label

Alastair J. Hutchison; Bart Maes; Johan Vanwalleghem; Gernot Asmus; Elfatih Mohamed; Roland Schmieder; Wolfgang Backs; Rene Jamar; Andre Vosskühler

2006-01-01

386

Lanthanum permeability of the tight junction (zonula occludens) in the renal tubule of the rat  

Microsoft Academic Search

Lanthanum permeability of the tight junction (zonula occludens) in the renal tubule of the rat. The permeability of the tight junctions (zonulae occludentes) in the proximal and distal convoluted tubules and the cortical collecting ducts of the rat were evaluated with a lanthanum tracer. Eight non-expanded and nine volume-expanded rats were studied. Non-expanded animals received 0.02 ml\\/min of isotonic saline.

C Craig Tisher; William E Yarger

1973-01-01

387

Effect of Lanthanum Ions on Function and Structure of Frog Neuromuscular Junctions  

Microsoft Academic Search

1. Electrophysiological and electron-microscopic studies were made of the effect of lanthanum ions on frog neuromuscular junctions. 2. In the presence of 1 mM La2+, nerve impulses continued to invade the nerve terminals but ceased to release transmitter. 3. Lanthanum caused a rapid and large increase in the frequency of miniature end-plate potentials; presumably because La activates the mechanism of

J. Heuser; R. Miledi

1971-01-01

388

Lanthanum carbonate: a review of its use in lowering serum phosphate in patients with end-stage renal disease.  

PubMed

Orally administered lanthanum carbonate (Fosrenol) dissociates in the acid environment of the upper gastrointestinal tract to release the cation lanthanum, which then binds dietary phosphate. Lanthanum carbonate was effective in reducing levels of serum phosphate and serum calcium x phosphate product and then maintaining these levels within target ranges for up to 6 years in adult patients with end-stage renal disease (ESRD) on haemodialysis or peritoneal dialysis. The reduction in serum phosphate levels with lanthanum carbonate was generally similar to that with calcium carbonate or sevelamer hydrochloride. This agent was generally well tolerated, with the most frequently reported adverse events being gastrointestinal in nature and occurring at a similar rate to that with calcium carbonate. However, lanthanum carbonate was associated with fewer episodes of hypercalcaemia than calcium carbonate. Overall, lanthanum carbonate is a valuable option for the reduction of serum phosphate levels in patients with ESRD on haemodialysis or peritoneal dialysis. PMID:19852531

Curran, Monique P; Robinson, Dean M

2009-11-12

389

Synthesis and characterization of strontium-lanthanum apatites  

SciTech Connect

Two series of strontium-lanthanum apatites, Sr{sub 10-x}La {sub x}(PO{sub 4}){sub 6-x}(SiO{sub 4}) {sub x}F{sub 2} and Sr{sub 10-x}La {sub x}(PO{sub 4}){sub 6-x}(SiO{sub 4}) {sub x}O with 0 {<=} x {<=} 6, were synthesized by solid state reaction in the temperature range of 1200-1400 deg. C. The obtained materials were characterized by powder X-ray diffraction, infrared absorption spectroscopy and solid {sup 31}P Nuclear Magnetic Resonance. Pure solid solutions were obtained within a limited range of unsubstituted phosphate and silicate apatites. A variation of the lattice parameters was observed, with an increase of a and a decrease of c parameters, related to the radius of the corresponding substituted ions.

Boughzala, K. [U.R. Materiaux Inorganiques, Departement de Chimie, Faculte des Sciences, 5000 Monastir (Tunisia); Salem, E. Ben [U.R. Materiaux Inorganiques, Departement de Chimie, Faculte des Sciences, 5000 Monastir (Tunisia); Chrifa, A. Ben [Laboratoire de Thermodynamique Appliquee, Departement de Chimie, Faculte des Sciences de Tunis, Campus Universitaire, 1060 Tunis (Tunisia); Gaudin, E. [Institut de Chimie de la Matiere Condensee, Universite de Bordeaux, CNRS (UPR9048) 87 Avenue du Dr Schweitzer, 33608 Pessac Cedex (France); Bouzouita, K. [U.R. Materiaux Inorganiques, Departement de Chimie, Faculte des Sciences, 5000 Monastir (Tunisia)]. E-mail: khaled.bouzouita@ipeim.rnu.tn

2007-07-03

390

Lanthanum Chloride Scintillator for X-ray Detection  

NASA Astrophysics Data System (ADS)

In this presentation we describe the testing of a new cerium doped Lanthanum Chloride crystal (LaCl3:Ce), which makes an excellent scintillation material for X-ray counting applications. Detailed measurements were taken to determine the properties of the scintillator over an energy range of 5 to 60KeV; the results demonstrate that, when used with an appropriate PMT, the crystal sustains high count rates, minimal dead time and good energy resolution. For example an energy resolution of 35% (FWHM) was achieved at 22KeV and count rates of up to 1MHz are possible without dead-time correction. A comparison of LaCl3:Ce with two conventional scintillation materials, YAP:Ce and NaI(Tl) is also presented, which shows that that LaCl3:Ce offers a good balance of performance parameters for X-ray experiments.

Martin, T.; Allier, C.; Bernard, F.

2007-01-01

391

Cobalt doped lanthanum chromite material suitable for high temperature use  

DOEpatents

A high temperature, solid electrolyte electrochemical cell, subject to thermal cycling temperatures of between about 25.degree. C. and about 1200.degree. C., capable of electronic interconnection to at least one other electrochemical cell and capable of operating in an environment containing oxygen and a fuel, is made; where the cell has a first and second electrode with solid electrolyte between them, where an improved interconnect material is applied along a portion of a supporting electrode; where the interconnect is made of a chemically modified lanthanum chromite, containing cobalt as the important additive, which interconnect allows for adjustment of the thermal expansion of the interconnect material to more nearly match that of other cell components, such as zirconia electrolyte, and is stable in oxygen containing atmospheres such as air and in fuel environments.

Ruka, Roswell J. (Churchill, PA)

1986-01-01

392

Cobalt doped lanthanum chromite material suitable for high temperature use  

DOEpatents

A high temperature, solid electrolyte electrochemical cell, subject to thermal cycling temperatures of between about 25 C and about 1,200 C, capable of electronic interconnection to at least one other electrochemical cell and capable of operating in an environment containing oxygen and a fuel, is made; where the cell has a first and second electrode with solid electrolyte between them, where an improved interconnect material is applied along a portion of a supporting electrode; where the interconnect is made of a chemically modified lanthanum chromite, containing cobalt as the important additive, which interconnect allows for adjustment of the thermal expansion of the interconnect material to more nearly match that of other cell components, such as zirconia electrolyte, and is stable in oxygen containing atmospheres such as air and in fuel environments. 2 figs.

Ruka, R.J.

1986-12-23

393

Lanthanum biosorption by a Pseudomonas sp.: equilibrium studies and chemical characterization.  

PubMed

Lanthanum biosorption by a Pseudomonas sp. was characterized in terms of equilibrium metal loading, model fitting, kinetics, effect of solution pH, lanthanum-bacteria interaction mechanism and recovery of sorbed metal. Lanthanum sorption by the bacterium was rapid and optimum at pH 5.0 with equilibrium metal loading as high as 950 mg g(-1) biomass dry wt. Scatchard model and potentiometric titration suggested the presence of at least two types of metal-binding sites, corresponding to a strong and a weak binding affinity. The chemical nature of metal-microbe interaction has been elucidated employing FTIR spectroscopy, energy dispersive X-ray analysis (EDX) and X-ray diffraction analysis (XRD). FTIR spectroscopy and XRD analysis revealed strong involvement of cellular carboxyl and phosphate groups in lanthanum binding by the bacterial biomass. EDX and the elemental analysis of the sorption solution ascertained the binding of lanthanum with the bacterial biomass via displacement of cellular potassium and calcium. Transmission electron microscopy exhibited La accumulation throughout the bacterial cell with some granular deposits in cell periphery and in cytoplasm. XRD confirmed the presence of LaPO4 crystals onto the bacterial biomass after La accumulation for a long period. A combined ion-exchange-complexation-microprecipitation mechanism could be involved in lanthanum accumulation by the biomass. Almost 98% of biomass-bound La could be recovered using CaCO3 as the desorbing agent. PMID:16598494

Kazy, Sufia K; Das, Susanta K; Sar, Pinaki

2006-09-01

394

Simultaneous determination of lanthanum and cerium in mixed rare earths with p-acetylarsenazo by spectrophotometry.  

PubMed

A new method has been developed for the simultaneous spectrophotometric determination of small amounts of lanthanum and cerium in the presence of large amounts of rare earth elements. Lanthanum (III) and cerium (III) were determined spectrophotometrically with p-acetylarsenazo as the color reagent in the chloroacetic acid medium at pH 3.1 by measuring the absorbances of the complexes at 670 nm. The remained rare earths were masked with ethylenediaminetetracetic acid and ethylenediaminetetracetic acid-zinc during the analysis. The optimum conditions for the simultaneous determination of lanthanum and cerium have been defined. The individual content of lanthanum (III) and cerium (III) were determined by varying the amounts of EDTA and EDTA-Zn used in the analysis and solving the simultaneous absorbance equations based on the Beer's law. The proposed method has been successfully applied to the determination of lanthanum and cerium in Longnan mixed rare earth oxides and other heavy rare earths without preliminary separation with satisfactory results. The relative errors of all analytical results of the method were not more than 2% with good precision. The procedure does not require separation of lanthanum, cerium and the other rare earth elements. PMID:18965986

Zhai, Q Z

1994-05-01

395

Gas permeability of lanthanum oxycarbide targets for the SPES project  

NASA Astrophysics Data System (ADS)

The creation of a porous matrix made of interconnected and permeable paths is a key step for the processing of optimized metal carbide targets in the SPES (Selective Production of Exotic Species) project. Unlike close or non-connected open pores, permeable pores link more efficiently the interior and the surface of target disks, and therefore facilitate the effusion and convection transport mechanisms for a faster extraction of exotic nuclei with short decay times. This work describes the analysis of the interconnected porosity of lanthanum oxycarbide targets through the evaluation of permeability coefficients obtained in argon flow experiments at room and high temperature. Samples were produced by the sacrificial template method using phenolic resin (PR) as source of carbon for the carbothermal reaction of lanthanum oxide, and different amounts of polymethilmetacrylate (PMMA) microbeads as template for the production of porosity. Results showed that conventional targets prepared without sacrificial templates displayed relatively high total porosity (45.6%), but very low permeability coefficients (k1 = 4.21 × 10-17 m2 and k2 = 1.90 × 10-15 m), comparable to other dense ceramic materials. The linear increase in total porosity from 64.8% to 88.9% achieved by the gradual increase of PMMA from 30% to 80 wt.% resulted in a remarkable increase of five orders of magnitude for k1 (2.36 × 10-12 m2) and eight orders for k2 (7.48 × 10-7 m2). The addition of sacrificial fillers was found to be much more efficient to create interconnected and permeable paths in the structure than the carbothermal reduction itself. Preliminary tests with argon flow up to 450 °C revealed that the porous matrix also became more permeable with the increase in the gas temperature due to thermal expansion effects, but the extent of this gain depended on the initial porosity level of the sample.

Biasetto, L.; Innocentini, M. D. M.; Chacon, W. S.; Corradetti, S.; Carturan, S.; Colombo, P.; Andrighetto, A.

2013-09-01

396

Synthesis and characterization of lanthanum dicarbide-carbon targets for radioactive ion beams generation via the carbothermal reaction  

Microsoft Academic Search

In this study, we report the synthesis procedure for the attainment of thin pellets composed of lanthanum dicarbide (LaC2) grains and graphite, as a candidate material for the production of targets for the generation of radioactive ion beams (RIBs). The samples were obtained by thermal treatment of green pellets of lanthanum oxide or lanthanum oxalate (La2O3 and La2(C2O4)3, respectively) mixed

S. Carturan; M. Tonezzer; L. Piga; P. Zanonato; P. Colombo; A. Andrighetto; L. Biasetto; P. Di Bernardo; G. Maggioni; F. Gramegna; G. Prete

2007-01-01

397

Crystal structure of Eu-doped magnetoplumbite-type lanthanum aluminum oxynitride with emission site splitting  

SciTech Connect

Eu-doped lanthanum aluminum oxynitride (LaAl{sub 12}(O,N){sub 19}) with magnetoplumbite structure was prepared by nitridation of the oxide precursor obtained from aluminum glycine gel and subsequent post-annealing. Eu-doped lanthanum aluminum oxynitride exhibited blue light emission at 440 nm with a shoulder at 464 nm under excitation at 254 nm. Isostructural Eu-doped calcium aluminum oxide (CaAl{sub 12}O{sub 19}) exhibited a single emission peak at 415 nm. Structural refinement using neutron powder diffraction indicated that the lanthanum site occupied partially by Eu{sup 2+} splits into 2d and 6h sites in the aluminum oxynitride. The longer emission and the shoulder peak in the former aluminum oxynitride were observed in relation to the increasing covalency as well as crystal field splitting around doped Eu{sup 2+} induced by site splitting involved with the two kinds of anions. - Graphical Abstract: Magnetoplumbite type Eu-doped lanthanum aluminum oxynitride has lanthanum site splitting induced by two kinds of anions, causing two emission peaks. Highlights: > Magnetoplumbite type LaAl{sub 12}(O,N){sub 19} doped with Eu shows emission peak splitting. > ND analysis is performed on La{sub 0.97}Eu{sub 0.03}Al{sub 12}(O,N){sub 19} and Ca{sub 0.97}Eu{sub 0.03}Al{sub 12}O{sub 19}. > La{sub 0.97}Eu{sub 0.03}Al{sub 12}(O,N){sub 19} has lanthanum site splitting. > The lanthanum site splitting is induced by coexisting of two kinds of anions.

Masubuchi, Yuji, E-mail: yuji-mas@eng.hokudai.ac.jp [Faculty of Engineering, Hokkaido University, N13 W8, Kita-ku, Sapporo 060-8628 (Japan); Hata, Tomoyuki; Motohashi, Teruki; Kikkawa, Shinichi [Faculty of Engineering, Hokkaido University, N13 W8, Kita-ku, Sapporo 060-8628 (Japan)

2011-09-15

398

22 CFR 151.9 - Evidence of insurance required for diplomatic license plates and waiver of fees.  

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407

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2011-07-01

409

Potentiometric measurement of polymer-membrane electrodes based on lanthanum  

SciTech Connect

Quantitative analysis of rare earth elements which are considered as the standard method that has a high accuracy, and detection limits achieved by the order of ppm is inductively coupled plasma atomic emission spectroscopy (ICPAES). But these tools are expensive and valuable analysis of the high cost of implementation. In this study be made and characterized selective electrode for the determination of rare earth ions is potentiometric. Membrane manufacturing techniques studied is based on immersion (liquid impregnated membrane) in PTFE 0.5 pore size. As ionophores to be used tri butyl phosphate (TBP) and bis(2-etylhexyl) hydrogen phosphate. There is no report previously that TBP used as ionophore in polymeric membrane based lanthanum. Some parameters that affect the performance of membrane electrode such as membrane composition, membrane thickness, and types of membrane materials studied in this research. Manufacturing of Ion Selective Electrodes (ISE) Lanthanum (La) by means of impregnation La membrane in TBP in kerosene solution has been done and showed performance for ISE-La. FTIR spectrum results for PTFE 0.5 pore size which impregnated in TBP and PTFE blank showed difference of spectra in the top 1257 cm{sup ?1}, 1031 cm{sup ?1} and 794.7 cm{sup ?1} for P=O stretching and stretching POC from group ?OP =O. The result showed shift wave number for P =O stretching of the cluster (?OP=O) in PTFE-TBP mixture that is at the peak of 1230 cm{sup ?1} indicated that no interaction bond between hydroxyl group of molecules with molecular clusters fosforil of TBP or R{sub 3}P = O. The membrane had stable responses in pH range between 1 and 9. Good responses were obtained using 10{sup ?3} M La(III) internal solution, which produced relatively high potential. ISE-La showed relatively good performances. The electrode had a response time of 29±4.5 second and could be use for 50 days. The linear range was between 10{sup ?5} and 10{sup ?1} M.

Saefurohman, Asep, E-mail: saefurohman.asep78@Gmail.com; Buchari,, E-mail: saefurohman.asep78@Gmail.com; Noviandri, Indra, E-mail: saefurohman.asep78@Gmail.com [Department of Chemistry, Bandung Institute of Technology (Indonesia); Syoni [Department of Metallurgy Engineering, Bandung Institute of Technology (Indonesia)

2014-03-24

410

Titania-lanthanum phosphate photoactive and hydrophobic new generation catalyst  

SciTech Connect

Titania-lanthanum phosphate nanocomposites with multifunctional properties have been synthesized by aqueous sol-gel method. The precursor sols with varying TiO{sub 2}:LaPO{sub 4} ratios were applied as thin coating on glass substrates in order to be transparent, hydrophobic, photocatalytically active coatings. The phase compositions of the composite powders were identified by powder X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HR-TEM). The anatase phase of TiO{sub 2} in TiO{sub 2}-LaPO{sub 4} composite precursors was found to be stable even on annealing at 800 deg. C. The glass substrates, coated with TL1 (TiO{sub 2}-LaPO{sub 4} composition with 1 mol% LaPO{sub 4}) and TL50 (composite precursor containing TiO{sub 2} and LaPO{sub 4} with molar ratio 1:1) sols and annealed at 400 deg. C, produced contact angles of 74 deg. and 92 deg., respectively, though it is only 62 deg. for pure TiO{sub 2} coating. The glass substrates, coated with TL50 sol, produced surfaces with relatively high roughness and uneven morphology. The TL1 material, annealed at 800 deg. C, has shown the highest UV photoactivity with an apparent rate constant, k{sub app}=24x10{sup -3} min{sup -1}, which is over five times higher than that observed with standard Hombikat UV 100 (k{sub app}=4x10{sup -3} min{sup -1}). The photoactivity combined with a moderate contact angle (85.3 deg.) shows that this material has a promise as an efficient self-cleaning precursor. - Graphical abstract: Multifunctional TiO{sub 2}-LaPO{sub 4} composite stabilizes anatase phase with enhanced photocatalytic activity, and moderately higher hydrophobicity is a promising material for self-cleaning application. Highlights: > Titania-lanthanum phosphate nanocomposites were synthesized by aqueous sol-gel method. > Transparent, hydrophobic, photoactive coatings were developed on glass substrates. > The glass substrates, coated with TL1 annealed at 400 deg. C, produced a contact angle of 74 deg. > The TL1 material at 800 deg. C has shown the highest UV photoactivity (k{sub app}=24x10{sup -3} min{sup -1}). > Photoactivity and moderate contact angle show that this is an efficient self-cleaning precursor.

Jyothi, Chembolli K.; Jaimy, Kanakkanmavudi B. [National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019 (India); Ghosh, Swapankumar, E-mail: swapankumar.ghosh2@mail.dcu.ie [National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019 (India); Sankar, Sasidharan; Smitha, V.S. [National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019 (India); Warrier, K.G.K., E-mail: wwarrierkgk@yahoo.co.in [National Institute for Interdisciplinary Science and Technology (NIIST), CSIR, Trivandrum 695019 (India)

2011-07-15

411

Cation-deficient lanthanum manganite oxides: Experimental and theoretical studies  

NASA Astrophysics Data System (ADS)

Cation-deficient lanthanum manganite oxides with 0.8 ? La/Mn ? 1.25 were synthesized using a multi-step decomposition of gel precursors and investigated from experimental and theoretical point of view. The XRD (X-Ray Diffraction) analysis of the mixed LaMnO 3 oxide crystal concludes to a hexagonal structure, space group R-3c, excluding the presence of pure oxides such as La 2O 3, Mn 2O 3, or MnO 2 whatever the ratio La/Mn is. Oxides with nominal formulae La 1- xMnO 3+ y and LaMn 1- x' O 3+ y contain more than one defect structure involving valence defect (holes h rad ), anionic vacancies as well as cationic vacancies in A and B sublattices of the perovskite structure. With the increase of La or Mn non-stoichiometry, the oxygen content y decreases more with La-deficient compositions than with Mn-deficient ones. The La/Mn ratio influences strongly the relationship between [h rad ], [V Orad rad ], [V La?] and [V Mn?]. The DFT-GGA (Density functional Theory, Generalized-Gradient Approximation) simulation of these compounds using VASP (Vienna Ab-initio Simulation Package) concludes that the electronic structure for the optimized stoichiometric La 6Mn 6O 18 is not optimal, relative to that expected considering Mn(III) ions with four alpha electrons each. The non-stoichiometry is the easiest way of reducing the Jahn-Teller instability by depopulating the half-filled e g orbitals. A partial oxidation is then stabilizing. Creation of defects, either an O insertion or a cationic vacancy, allows finding an ideal count. In the case of pure cationic defects (missing a La(III) or a Mn(III) cation), the amount of vacancies is one missing cation upon twelve. The compact nature of lanthanum manganite oxide does not allow oxygen insertion within the bulk structure and oxidation can only be achieved at the surface without O penetration. The formation of antisites is endothermic. The creation of mixed vicinal vacancies, one oxygen and one cationic vacancy (La or Mn), is exothermic for a concentration of defects of one defect per twelve cations.

Hammami, Ramzi; Harrouch Batis, Narjes; Batis, Habib; Minot, Christian

2009-04-01

412

J. Phys. C: Solid State Phys., Vol. 8, 1975.Printed in Great Britain. @ 1975 The metal-insulator transition in lanthanum strontium vanadate  

E-print Network

-insulator transition in lanthanum strontium vanadate M Sayer, R Chent, R Fletcher and A Mansinght Department of Physics cluster formation is of importance. 1. Introduction Lanthanum strontium vanadate La,-xSr,V03 (0 I x VO, was prepared as sintered polycrystalline discs from appro- priate mixtures of lanthanum and strontium oxalates

Chen, Reuven

413

9 CFR 151.2 - Issuance of a certificate of pure breeding.  

Code of Federal Regulations, 2010 CFR

...false Issuance of a certificate of pure breeding. 151.2 Section 151.2 Animals...2 Issuance of a certificate of pure breeding. The Administrator will issue a certificate of pure breeding for an animal claimed to be...

2010-01-01

414

9 CFR 151.3 - Application for certificate of pure breeding.  

Code of Federal Regulations, 2014 CFR

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2014-01-01

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9 CFR 151.2 - Issuance of a certificate of pure breeding.  

Code of Federal Regulations, 2011 CFR

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2011-01-01

416

9 CFR 151.3 - Application for certificate of pure breeding.  

Code of Federal Regulations, 2012 CFR

...false Application for certificate of pure breeding. 151.3 Section 151.3 Animals...3 Application for certificate of pure breeding. An application for a certificate of pure breeding executed by the owner, agent,...

2012-01-01

417

9 CFR 151.2 - Issuance of a certificate of pure breeding.  

Code of Federal Regulations, 2013 CFR

...false Issuance of a certificate of pure breeding. 151.2 Section 151.2 Animals...2 Issuance of a certificate of pure breeding. The Administrator will issue a certificate of pure breeding for an animal claimed to be...

2013-01-01

418

9 CFR 151.2 - Issuance of a certificate of pure breeding.  

Code of Federal Regulations, 2012 CFR

...false Issuance of a certificate of pure breeding. 151.2 Section 151.2 Animals...2 Issuance of a certificate of pure breeding. The Administrator will issue a certificate of pure breeding for an animal claimed to be...

2012-01-01

419

9 CFR 151.3 - Application for certificate of pure breeding.  

Code of Federal Regulations, 2011 CFR

...false Application for certificate of pure breeding. 151.3 Section 151.3 Animals...3 Application for certificate of pure breeding. An application for a certificate of pure breeding executed by the owner, agent,...

2011-01-01

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9 CFR 151.3 - Application for certificate of pure breeding.  

Code of Federal Regulations, 2013 CFR

...false Application for certificate of pure breeding. 151.3 Section 151.3 Animals...3 Application for certificate of pure breeding. An application for a certificate of pure breeding executed by the owner, agent,...

2013-01-01

421

9 CFR 151.2 - Issuance of a certificate of pure breeding.  

Code of Federal Regulations, 2014 CFR

...false Issuance of a certificate of pure breeding. 151.2 Section 151.2 Animals...2 Issuance of a certificate of pure breeding. The Administrator will issue a certificate of pure breeding for an animal claimed to be...

2014-01-01

422

9 CFR 151.3 - Application for certificate of pure breeding.  

Code of Federal Regulations, 2010 CFR

...false Application for certificate of pure breeding. 151.3 Section 151.3 Animals...3 Application for certificate of pure breeding. An application for a certificate of pure breeding executed by the owner, agent,...

2010-01-01

423

24 CFR 943.151 - What procurement standards apply to a joint venture itself?  

Code of Federal Regulations, 2011 CFR

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2011-04-01

424

24 CFR 943.151 - What procurement standards apply to a joint venture itself?  

Code of Federal Regulations, 2014 CFR

...false What procurement standards apply to a joint venture itself? 943.151 Section 943...DEVELOPMENT PUBLIC HOUSING AGENCY CONSORTIA AND JOINT VENTURES Subsidiaries, Affiliates, Joint Ventures in Public Housing § 943.151...

2014-04-01

425

24 CFR 943.151 - What procurement standards apply to a joint venture itself?  

Code of Federal Regulations, 2013 CFR

...false What procurement standards apply to a joint venture itself? 943.151 Section 943...DEVELOPMENT PUBLIC HOUSING AGENCY CONSORTIA AND JOINT VENTURES Subsidiaries, Affiliates, Joint Ventures in Public Housing § 943.151...

2013-04-01

426

24 CFR 943.151 - What procurement standards apply to a joint venture itself?  

Code of Federal Regulations, 2010 CFR

...false What procurement standards apply to a joint venture itself? 943.151 Section 943...DEVELOPMENT PUBLIC HOUSING AGENCY CONSORTIA AND JOINT VENTURES Subsidiaries, Affiliates, Joint Ventures in Public Housing § 943.151...

2010-04-01

427

24 CFR 943.151 - What procurement standards apply to a joint venture itself?  

Code of Federal Regulations, 2012 CFR

...false What procurement standards apply to a joint venture itself? 943.151 Section 943...DEVELOPMENT PUBLIC HOUSING AGENCY CONSORTIA AND JOINT VENTURES Subsidiaries, Affiliates, Joint Ventures in Public Housing § 943.151...

2012-04-01

428

14 CFR 151.24 - Procedures: Application; information on estimated project costs.  

Code of Federal Regulations, 2010 CFR

...Application; information on estimated project costs. 151.24 Section 151.24...Application; information on estimated project costs. (a) If any part of the estimated project costs consists of the value of...

2010-01-01

429

14 CFR 151.24 - Procedures: Application; information on estimated project costs.  

Code of Federal Regulations, 2014 CFR

...Application; information on estimated project costs. 151.24 Section 151.24...Application; information on estimated project costs. (a) If any part of the estimated project costs consists of the value of...

2014-01-01

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14 CFR 151.24 - Procedures: Application; information on estimated project costs.  

Code of Federal Regulations, 2011 CFR

...Application; information on estimated project costs. 151.24 Section 151.24...Application; information on estimated project costs. (a) If any part of the estimated project costs consists of the value of...

2011-01-01

431

14 CFR 151.24 - Procedures: Application; information on estimated project costs.  

Code of Federal Regulations, 2012 CFR

...Application; information on estimated project costs. 151.24 Section 151.24...Application; information on estimated project costs. (a) If any part of the estimated project costs consists of the value of...

2012-01-01

432

14 CFR 151.24 - Procedures: Application; information on estimated project costs.  

Code of Federal Regulations, 2013 CFR

...Application; information on estimated project costs. 151.24 Section 151.24...Application; information on estimated project costs. (a) If any part of the estimated project costs consists of the value of...

2013-01-01

433

14 CFR 151.79 - Runway paving: Second runway; wind conditions.  

Code of Federal Regulations, 2013 CFR

...false Runway paving: Second runway; wind conditions. 151.79 Section 151...79 Runway paving: Second runway; wind conditions. (a) All airports. Paving a second runway on the basis of wind conditions is eligible for inclusion...

2013-01-01

434

14 CFR 221.151 - Method of revoking power of attorney.  

Code of Federal Regulations, 2014 CFR

...2014-01-01 false Method of revoking power of attorney. 221.151 Section 221...REGULATIONS TARIFFS Giving and Revoking Powers of Attorney to Agents § 221.151 Method of revoking power of attorney. (a) A power of...

2014-01-01

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14 CFR 221.151 - Method of revoking power of attorney.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 false Method of revoking power of attorney. 221.151 Section 221...REGULATIONS TARIFFS Giving and Revoking Powers of Attorney to Agents § 221.151 Method of revoking power of attorney. (a) A power of...

2011-01-01

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14 CFR 221.151 - Method of revoking power of attorney.  

Code of Federal Regulations, 2013 CFR

...2013-01-01 false Method of revoking power of attorney. 221.151 Section 221...REGULATIONS TARIFFS Giving and Revoking Powers of Attorney to Agents § 221.151 Method of revoking power of attorney. (a) A power of...

2013-01-01

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14 CFR 221.151 - Method of revoking power of attorney.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 false Method of revoking power of attorney. 221.151 Section 221...REGULATIONS TARIFFS Giving and Revoking Powers of Attorney to Agents § 221.151 Method of revoking power of attorney. (a) A power of...

2012-01-01

438

14 CFR 221.151 - Method of revoking power of attorney.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Method of revoking power of attorney. 221.151 Section 221...REGULATIONS TARIFFS Giving and Revoking Powers of Attorney to Agents § 221.151 Method of revoking power of attorney. (a) A power of...

2010-01-01

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19 CFR 201.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2010 CFR

...Section 201.151 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION...in Programs or Activities Conducted by the U.S. International Trade Commission § 201.151 Program...

2010-04-01

440

36 CFR 1208.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2013 CFR

...1208.151 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES ENFORCEMENT...HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE NATIONAL ARCHIVES AND RECORDS ADMINISTRATION § 1208.151 Program...

2013-07-01

441

36 CFR 1208.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2011 CFR

...1208.151 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES ENFORCEMENT...HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE NATIONAL ARCHIVES AND RECORDS ADMINISTRATION § 1208.151 Program...

2011-07-01

442

36 CFR 1208.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2012 CFR

...1208.151 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES ENFORCEMENT...HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE NATIONAL ARCHIVES AND RECORDS ADMINISTRATION § 1208.151 Program...

2012-07-01

443

36 CFR 1208.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2014 CFR

...1208.151 Parks, Forests, and Public Property NATIONAL ARCHIVES AND RECORDS ADMINISTRATION GENERAL RULES ENFORCEMENT...HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE NATIONAL ARCHIVES AND RECORDS ADMINISTRATION § 1208.151 Program...

2014-07-01

444

9 CFR 151.8 - Eligibility of an animal for certification.  

Code of Federal Regulations, 2014 CFR

9 Animals and Animal Products 1 2014-01-01 2014-01-01 false Eligibility of an animal for certification. 151.8 Section 151.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF...

2014-01-01

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9 CFR 151.8 - Eligibility of an animal for certification.  

Code of Federal Regulations, 2012 CFR

9 Animals and Animal Products 1 2012-01-01 2012-01-01 false Eligibility of an animal for certification. 151.8 Section 151.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF...

2012-01-01

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9 CFR 151.8 - Eligibility of an animal for certification.  

Code of Federal Regulations, 2013 CFR

9 Animals and Animal Products 1 2013-01-01 2013-01-01 false Eligibility of an animal for certification. 151.8 Section 151.8 Animals and Animal Products ANIMAL AND PLANT HEALTH INSPECTION SERVICE, DEPARTMENT OF...

2013-01-01

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36 CFR 909.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2010 CFR

...Section 909.151 Parks, Forests, and Public Property PENNSYLVANIA AVENUE DEVELOPMENT CORPORATION ENFORCEMENT OF NONDISCRIMINATION...BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE PENNSYLVANIA AVENUE DEVELOPMENT CORPORATION § 909.151 Program...

2010-07-01

448

19 CFR 151.27 - Weighing and sampling done at time of unlading.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Weighing and sampling done at time of unlading. 151.27...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Sugars...Molasses § 151.27 Weighing and sampling done at time of unlading....

2010-04-01

449

19 CFR 151.69 - Transfer or exportation of part of sampling unit.  

Code of Federal Regulations, 2010 CFR

... Transfer or exportation of part of sampling unit. 151.69 Section 151.69...TREASURY (CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and... Transfer or exportation of part of sampling unit. (a) Transfer of right to...

2010-04-01

450

18 CFR 1313.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2012 CFR

...151 Conservation of Power and Water Resources TENNESSEE VALLEY AUTHORITY ENFORCEMENT OF NONDISCRIMINATION...OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE TENNESSEE VALLEY AUTHORITY § 1313.151 Program...

2012-04-01

451

18 CFR 1313.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2013 CFR

...151 Conservation of Power and Water Resources TENNESSEE VALLEY AUTHORITY ENFORCEMENT OF NONDISCRIMINATION...OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE TENNESSEE VALLEY AUTHORITY § 1313.151 Program...

2013-04-01

452

18 CFR 1313.151 - Program accessibility: New construction and alterations.  

Code of Federal Regulations, 2014 CFR

...151 Conservation of Power and Water Resources TENNESSEE VALLEY AUTHORITY ENFORCEMENT OF NONDISCRIMINATION...OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE TENNESSEE VALLEY AUTHORITY § 1313.151 Program...

2014-04-01

453

19 CFR 151.46 - Allowance for detectable moisture and impurities.  

Code of Federal Regulations, 2010 CFR

...Allowance for detectable moisture and impurities. 151.46 Section 151.46 Customs...Allowance for detectable moisture and impurities. An allowance for all detectable moisture and impurities present in or upon imported...

2010-04-01

454

Silica-lanthanum oxide: pioneer composite of rare-Earth metal oxide in selective phosphopeptides enrichment.  

PubMed

Relying on the successful journey of metal oxides in phosphoproteomics, lanthanum oxide is employed for the engineering of an affinity material for phosphopeptide enrichment. The lanthanum oxide is chemically modified on the surface of silica and characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and Fourier transform infrared spectroscopy (FTIR). The obtained silica-lanthanum oxide composite is applied for the selective enrichment of phosphopeptides from tryptic digest of standard protein (?-casein, ?-casein, and commercially available casein mixtures from bovine milk). The enriched entities are analyzed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). The mass spectroscopy (MS) results show that the silica-lanthanum oxide composite exhibits enhanced capability for phosphopeptide enrichment with sensitivity assessed to be 50 fmol. Sequence coverage of casein is interpreted showing successful recovery. As a real sample, a protein digest of nonfat milk is applied. Also, the ability of lanthanum in different formats is checked in the selective phosphopeptides enrichment. The composite holds promising future in economic ground as it also possesses the regenerative ability for repetitive use. PMID:23134445

Jabeen, Fahmida; Hussain, Dilshad; Fatima, Batool; Musharraf, S Ghulam; Huck, Christian W; Bonn, G?nther K; Najam-ul-Haq, Muhammad

2012-12-01

455

Processing Techniques Developed to Fabricate Lanthanum Titanate Piezoceramic Material for High-Temperature Smart Structures  

NASA Technical Reports Server (NTRS)

Piezoelectric ceramic materials are potential candidates for use as actuators and sensors in intelligent gas turbine engines. For piezoceramics to be applied in gas turbine engines, they will have to be able to function in temperatures ranging from 1000 to 2500 F. However, the maximum use temperature for state-of-the-art piezoceramic materials is on the order of 300 to 400 F. Research activities have been initiated to develop high-temperature piezoceramic materials for gas turbine engine applications. Lanthanum titanate has been shown to have high-temperature piezoelectric properties with Curie temperatures of T(sub c) = 1500 C and use temperatures greater than 1000 C. However, the fabrication of lanthanum titanate poses serious challenges because of the very high sintering temperatures required for densification. Two different techniques have been developed at the NASA Glenn Research Center to fabricate dense lanthanum titanate piezoceramic material. In one approach, lower sintering temperatures were achieved by adding yttrium oxide to commercially available lanthanum titanate powder. Addition of only 0.1 mol% yttrium oxide lowered the sintering temperature by as much as 300 C, to just 1100 C, and dense lanthanum titanate was produced by pressure-assisted sintering. The second approach utilized the same commercially available powders but used an innovative sintering approach called differential sintering, which did not require any additive.

Goldsby, Jon C.; Farmer, Serene C.; Sayir, Ali

2004-01-01

456

Enhancement of ferromagnetic and dielectric properties of lanthanum doped bismuth ferrite nanostructures  

SciTech Connect

Highlights: Black-Right-Pointing-Pointer Rod shaped lanthanum doped bismuth ferrite was obtained. Black-Right-Pointing-Pointer The diameter of the particles were found to be decreasing on doping with lanthanum. Black-Right-Pointing-Pointer Both ferromagnetic and dielectric properties enhanced. Black-Right-Pointing-Pointer A transition due to spin canting is observed near 550 Degree-Sign C. Black-Right-Pointing-Pointer Electron spin resonance study shows the breakage of spin cycloid due to doping. -- Abstract: Cylindrical-shaped multiferroic Bi{sub 1-x}La{sub x}FeO{sub 3} (x = 0.0, 0.05, 0.1 and 0.15) were synthesized successfully by hydrothermal method. All samples were found to be rhombohedrally distorted perovskite structure. Diameter of the cylindrical particles reduces from {approx}450 nm for x = 0.0 to {approx}100 nm for x = 0.1 prepared under the same conditions. The Neel temperature as well as the dielectric constant was also found to increase with the increase in lanthanum content. Lanthanum doping also enhanced the magnetic properties. Magnetization measurements above room temperature show a significant increase in magnetization at around 400 Degree-Sign C. Enhanced magnetic properties due to lanthanum doping are caused by the breakage of spin cycloid as observed by electron spin resonance study.

Chaudhuri, A., E-mail: arka@bose.res.in [Magnetism Laboratory, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India); Mandal, K. [Magnetism Laboratory, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India)] [Magnetism Laboratory, S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700 098 (India)

2012-04-15

457

Lanthanum carbonate stimulates bone formation in a rat model of renal insufficiency with low bone turnover.  

PubMed

Control of phosphate is important in the management of chronic kidney disease with mineral and bone disorder (CKD-MBD), for which lanthanum carbonate, a non-calcium phosphate-binding agent, has recently been introduced; however, it remains to be determined whether it has any beneficial or deleterious effect on bone remodeling. In the present study, the effects of lanthanum carbonate were examined in an animal model that mimics low turnover bone disease in CKD, i.e., thyroparathyroidectomized (TPTX) and 5/6 nephrectomized (NX) rats undergoing a constant infusion of parathyroid hormone (PTH) and thyroxine injections (TPTX-PTH-5/6NX). Bone histomorphometry at the second lumbar vertebra and tibial metaphysis revealed that both bone formation and resorption were markedly suppressed in the TPTX-PTH-5/6NX model compared with the sham-operated control group, and treatment with lanthanum carbonate was associated with the stimulation of bone formation but not an acceleration of bone resorption. Lanthanum treatment caused a robust stimulation of bone formation with an activation of osteoblasts on the endosteal surface of femoral diaphysis, leading to an increase in cortical bone volume. Thus, lanthanum carbonate has the potential to stimulate bone formation in cases of CKD-MBD with suppressed bone turnover. PMID:24126694

Fumoto, Toshio; Ito, Masako; Ikeda, Kyoji

2014-09-01

458

151. Photocopy of drawing (taken from Twin Falls Canal Company ...  

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

151. Photocopy of drawing (taken from Twin Falls Canal Company Surveyor's Transit Book #363, Page 20). SURVEY PRINT SHOWING POINT SPILLWAY AND FIELD NOTES, TWIN FALLS COUNTY NORTHWEST OF MURTAUGH, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

459

46 CFR 151.45-4 - Cargo-handling.  

Code of Federal Regulations, 2014 CFR

46 Shipping 5 2014-10-01 2014-10-01...45-4 Section 151.45-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND...tanks. (b) Closing of sea and ballast valves. All sea and ballast valves are to be properly...

2014-10-01

460

46 CFR 151.45-4 - Cargo-handling.  

Code of Federal Regulations, 2013 CFR

46 Shipping 5 2013-10-01 2013-10-01...45-4 Section 151.45-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND...tanks. (b) Closing of sea and ballast valves. All sea and ballast valves are to be properly...

2013-10-01

461

46 CFR 151.45-4 - Cargo-handling.  

Code of Federal Regulations, 2012 CFR

46 Shipping 5 2012-10-01 2012-10-01...45-4 Section 151.45-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND...tanks. (b) Closing of sea and ballast valves. All sea and ballast valves are to be properly...

2012-10-01

462

46 CFR 151.45-4 - Cargo-handling.  

Code of Federal Regulations, 2010 CFR

46 Shipping 5 2010-10-01 2010-10-01...45-4 Section 151.45-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND...tanks. (b) Closing of sea and ballast valves. All sea and ballast valves are to be properly...

2010-10-01

463

46 CFR 151.45-4 - Cargo-handling.  

Code of Federal Regulations, 2011 CFR

46 Shipping 5 2011-10-01 2011-10-01...45-4 Section 151.45-4 Shipping COAST GUARD, DEPARTMENT OF HOMELAND...tanks. (b) Closing of sea and ballast valves. All sea and ballast valves are to be properly...

2011-10-01

464

NUMBER: HR 1.51 SECTION: Human Resources  

E-print Network

1 NUMBER: HR 1.51 SECTION: Human Resources SUBJECT: Professional Development for University Authorized by: Chris Byrd Issued by: Division of Human Resources The language used in this document does of this paragraph create any contract of employment. The University of South Carolina Division of Human Resources

Almor, Amit

465

46 CFR 160.151-57 - Servicing procedure.  

Code of Federal Regulations, 2014 CFR

...Each power cell for the top and inside canopy lights must be inspected and tested...Permanently mark the liferaft on its outside canopy, or on a servicing-record panel on an...160.151-17(c), or on the outside canopy of the liferaft, the name, if...

2014-10-01

466

Mossbauer studies of 151 Eu in europium oxalate,  

E-print Network

Mo¨ssbauer studies of 151 Eu in europium oxalate, europium bissalen ammonium and europium benzoate of europium water insoluble chelates have been prepared for several decades, the covalent nature temperatures (qD) of three europium chelates: namely europium oxalate, europium bissalen ammonium (recently

Ryan, Dominic

467

14 CFR 151.117 - Advance planning proposals: Procedures; application.  

Code of Federal Regulations, 2014 CFR

...and Procedures for Advance Planning and Engineering Proposals § 151.117 Advance planning...for the purpose of advance planning and engineering must submit a completed FAA Form 3731...proposal, such as an offer from an engineering firm containing a schedule of...

2014-01-01

468

33 CFR 151.1506 - Restriction of operation.  

Code of Federal Regulations, 2011 CFR

...DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID...Nonindigenous Species in the Great Lakes and Hudson River § 151.1506 Restriction of operation...operated in the Great Lakes or the Hudson River, north of the George Washington...

2011-07-01

469

33 CFR 151.1506 - Restriction of operation.  

Code of Federal Regulations, 2010 CFR

...DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION VESSELS CARRYING OIL, NOXIOUS LIQUID...Nonindigenous Species in the Great Lakes and Hudson River § 151.1506 Restriction of operation...operated in the Great Lakes or the Hudson River, north of the George Washington...

2010-07-01

470

SEXTANT 151 Characteristic A B C D E F G  

E-print Network

SEXTANT 151 Characteristic A B C D E F G SEXTANT yes yes yes yes yes yes yes/no Table 9.1: Linguistic characteristics which can be detected by the SEXTANT Parser. See Table 9.2 for an explanation, we used our original SEXTANT parser on the IPSM'95 test beds. Due to time constraints, we only

Sutcliffe, Richard

471

Safety analysis of the nuclear chemistry Building 151  

SciTech Connect

This report summarizes the results of a safety analysis that was done on Building 151. The report outlines the methodology, the analysis, and the findings that led to the low hazard classification. No further safety evaluation is indicated at this time. 5 tables.

Kvam, D.

1984-06-29

472

Physics 151 Lecture 1 Physics 207: Lecture 1, Pg 1  

E-print Network

Page 1 Physics 151 ­ Lecture 1 Physics 207: Lecture 1, Pg 1 Physics 207, Sections: 301/601Physics 207, Sections: 301/601 ­­ 314/614314/614 General Physics IGeneral Physics I MichaelMichael Winokur of the courseScope of the course Begin chapter 1Begin chapter 1 Homepage:Homepage: http://romano.physics

Winokur, Michael

473

19 CFR 151.71 - Laboratory testing for clean yield.  

Code of Federal Regulations, 2012 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.71 Laboratory testing for clean...to importer. Where samples of wool or hair have been tested in a Customs laboratory...laboratory test is not feasible, the wool or hair may be retested by a commercial...

2012-04-01

474

19 CFR 151.70 - Method of sampling by Customs.  

Code of Federal Regulations, 2014 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.70 Method of sampling by Customs. A general...feasible to obtain a representative general sample of the wool or hair in a sampling unit or to test such a sample in...

2014-04-01

475

19 CFR 151.75 - Final determination of clean yield.  

Code of Federal Regulations, 2012 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.75 Final determination of clean yield. The...consideration of all the tests made in connection with the wool or hair concerned. [T.D. 73-175, 38 FR 17470, July 2,...

2012-04-01

476

19 CFR 151.62 - Information on invoices.  

Code of Federal Regulations, 2012 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.62 Information on invoices. Invoices of wool or hair subject to duty at a rate per clean...g) Net weight of each lot of wool or hair covered by the invoice in the...

2012-04-01

477

19 CFR 151.74 - Retest at port director's request.  

Code of Federal Regulations, 2013 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.74 Retest at port director's request. If...to have another test made upon a suitable sample of the wool or hair at the expense of the Government. When the port director is...

2013-04-01

478

19 CFR 151.63 - Information on entry summary.  

Code of Federal Regulations, 2012 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.63 Information on entry summary. Each entry summary covering wool or hair subject to duty at a rate per clean...shall show as to each lot of wool or hair covered thereby, in addition to...

2012-04-01

479

19 CFR 151.70 - Method of sampling by Customs.  

Code of Federal Regulations, 2013 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.70 Method of sampling by Customs. A general...feasible to obtain a representative general sample of the wool or hair in a sampling unit or to test such a sample in...

2013-04-01

480

19 CFR 151.71 - Laboratory testing for clean yield.  

Code of Federal Regulations, 2013 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.71 Laboratory testing for clean...to importer. Where samples of wool or hair have been tested in a Customs laboratory...laboratory test is not feasible, the wool or hair may be retested by a commercial...

2013-04-01

481

19 CFR 151.70 - Method of sampling by Customs.  

Code of Federal Regulations, 2012 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.70 Method of sampling by Customs. A general...feasible to obtain a representative general sample of the wool or hair in a sampling unit or to test such a sample in...

2012-04-01

482

19 CFR 151.74 - Retest at port director's request.  

Code of Federal Regulations, 2012 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.74 Retest at port director's request. If...to have another test made upon a suitable sample of the wool or hair at the expense of the Government. When the port director is...

2012-04-01

483

19 CFR 151.71 - Laboratory testing for clean yield.  

Code of Federal Regulations, 2014 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.71 Laboratory testing for clean...to importer. Where samples of wool or hair have been tested in a Customs laboratory...laboratory test is not feasible, the wool or hair may be retested by a commercial...

2014-04-01

484

19 CFR 151.62 - Information on invoices.  

Code of Federal Regulations, 2014 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.62 Information on invoices. Invoices of wool or hair subject to duty at a rate per clean...g) Net weight of each lot of wool or hair covered by the invoice in the...

2014-04-01

485

19 CFR 151.63 - Information on entry summary.  

Code of Federal Regulations, 2014 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.63 Information on entry summary. Each entry summary covering wool or hair subject to duty at a rate per clean...shall show as to each lot of wool or hair covered thereby, in addition to...

2014-04-01

486

19 CFR 151.75 - Final determination of clean yield.  

Code of Federal Regulations, 2014 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.75 Final determination of clean yield. The...consideration of all the tests made in connection with the wool or hair concerned. [T.D. 73-175, 38 FR 17470, July 2,...

2014-04-01

487

19 CFR 151.62 - Information on invoices.  

Code of Federal Regulations, 2013 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.62 Information on invoices. Invoices of wool or hair subject to duty at a rate per clean...g) Net weight of each lot of wool or hair covered by the invoice in the...

2013-04-01

488

19 CFR 151.63 - Information on entry summary.  

Code of Federal Regulations, 2013 CFR

...AND TESTING OF MERCHANDISE Wool and Hair § 151.63 Information on entry summary. Each entry summary covering wool or hair subject to duty at a rate per clean...shall show as to each lot of wool or hair covered thereby, in addition to...

2013-04-01

489

19 CFR 151.64 - Extra copy of entry summary.  

Code of Federal Regulations, 2014 CFR

...CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.64 Extra copy of entry summary. One extra copy of the entry summary covering wool or hair subject to duty at a rate per clean kilogram shall be filed in...

2014-04-01

490

19 CFR 151.64 - Extra copy of entry summary.  

Code of Federal Regulations, 2012 CFR

...CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.64 Extra copy of entry summary. One extra copy of the entry summary covering wool or hair subject to duty at a rate per clean kilogram shall be filed in...

2012-04-01

491

19 CFR 151.64 - Extra copy of entry summary.  

Code of Federal Regulations, 2013 CFR

...CONTINUED) EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.64 Extra copy of entry summary. One extra copy of the entry summary covering wool or hair subject to duty at a rate per clean kilogram shall be filed in...

2013-04-01

492

19 CFR 151.75 - Final determination of clean yield.  

Code of Federal Regulations, 2013 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.75 Final determination of clean yield. The...consideration of all the tests made in connection with the wool or hair concerned. [T.D. 73-175, 38 FR 17470, July 2,...

2013-04-01

493

19 CFR 151.74 - Retest at port director's request.  

Code of Federal Regulations, 2014 CFR

...EXAMINATION, SAMPLING, AND TESTING OF MERCHANDISE Wool and Hair § 151.74 Retest at port director's request. If...to have another test made upon a suitable sample of the wool or hair at the expense of the Government. When the port director is...

2014-04-01

494

Audio Engineering Society Convention e-Brief 151  

E-print Network

Audio Engineering Society Convention e-Brief 151 Presented at the 136th Convention 2014 April 26. Reproduction of this paper, or any portion thereof, is not permitted without direct permission from the Audio Engineering Society. APE: Audio Perceptual Evaluation toolbox for MATLAB Brecht De Man, Joshua D. Reiss Centre

Reiss, Josh

495

Photodissociation of yttrium and lanthanum oxide cluster cations.  

PubMed

Transition metal oxide cations of the form M n O m (+) (M = Y, La) are produced by laser vaporization in a pulsed nozzle source and detected with time-of-flight mass spectrometry. Cluster oxides for each value of n form only a limited number of stoichiometries; MO(M2O3)x(+) species are particularly intense. Cluster cations are mass selected and photodissociated using the third harmonic (355 nm) of a Nd:YAG laser. Multiphoton excitation is required to dissociate these clusters because of their strong bonding. Yttrium and lanthanum oxides exhibit different dissociation channels, but some common trends can be identified. Larger clusters for both metals undergo fission to make certain stable cation clusters, especially MO(M2O3) x (+) species. Specific cations are identified to be especially stable because of their repeated production in the decomposition of larger clusters. These include M3O4(+), M5O7(+), M7O10(+), and M9O13(+), along with Y6O8(+). Density functional theory calculations were performed to investigate the relative stabilities and structures of these systems. PMID:18494453

Reed, Z D; Duncan, M A

2008-06-19

496

Electrical and pyroelectric properties of lanthanum based niobate  

NASA Astrophysics Data System (ADS)

A lanthanum based new tungsten bronze (TB) ferroelectrics (K2Pb2La2W2Ti4Nb4O30) was synthesized by a mixed-oxide method at high temperature. Thermogravimetry analysis (TG) technique was used to decide the material preparation conditions. The formation of desired compound was confirmed by preliminary X-ray structural analysis. The SEM micrograph of the sintered sample exhibits uniform rod-like grain distribution without many voids. Detailed studies of the nature of variation of dielectric parameters with temperature and frequency shows dielectric anomaly at 310 °C. The temperature dependence of electrical parameters (impedance, modulus, conductivity, etc) of the material exhibits a strong correlation between its micro-structure (i.e., bulk, grain boundary, etc) and electrical properties. The dc conductivity follows the Arrhenius equation, and thus its variation with rise in temperature reveals the negative temperature coefficient of resistance (NTCR) behavior of the material. The material obeys Jonscher's universal power law which is evident from the frequency dependence of ac conductivity. The variation of current with temperature shows that the material has high pyroelectric co-efficient and figure of merit. Hence the material is useful for pyroelectric sensors.

Padhee, R.; Das, Piyush R.; Parida, B. N.; Choudhary, R. N. P.

2013-02-01

497

Transport properties of silver-calcium doped lanthanum manganite  

NASA Astrophysics Data System (ADS)

Electrical properties of silver-calcium doped lanthanum manganite (La0.5Ca0.5-xAgxMnO3 with 0.0

Cherif, B.; Rahmouni, H.; Smari, M.; Dhahri, E.; Moutia, N.; Khirouni, K.

2015-01-01

498

Genetics of superionic conductivity in lithium lanthanum titanates.  

PubMed

The self-diffusion of ions is a fundamental mass transport process in solids and has a profound impact on the performance of electrochemical devices such as the solid oxide fuel cell, batteries and electrolysers. The perovskite system lithium lanthanum titanate, La2/3-xLi3xTiO3 (LLTO) has been the subject of much academic interest as it displays very high lattice conductivity for a solid state Li conductor; making it a material of great technological interest for deployment in safe durable mobile power applications. However, so far, a clear picture of the structural features that lead to efficient ion diffusion pathways in LLTO, has not been fully developed. In this work we show that a genetic algorithm in conjunction with molecular dynamics can be employed to elucidate diffusion mechanisms in systems such as LLTO. Based on our simulations we provide evidence that there is a three-dimensional percolated network of Li diffusion pathways. The present approach not only reproduces experimental ionic conductivity results but the method also promises straightforward investigation and optimisation of the properties relating to superionic conductivity in materials such as LLTO. Furthermore, this method could be used to provide insights into related materials with structural disorder. PMID:25372938

Jay, E E; Rushton, M J D; Chroneos, A; Grimes, R W; Kilner, J A

2014-12-01

499

Ambi-site substitution of Mn in lanthanum germanate apatites  

SciTech Connect

A neutron diffraction study at 4 K of the Mn doped lanthanum germanate apatite-type oxide ion conductor of nominal starting composition 'La{sub 9.5}Mn{sub 0.5}(GeO{sub 4}){sub 6}O{sub 2.75}' is reported. The structure was refined in space group P6{sub 3}/m, although high thermal displacement parameters were observed for the oxide ion sites (particularly O3, and O4). Reduced thermal displacement parameters were obtained by splitting the O3 site, and allowing the O4 oxygen to move off site, which may indicate local regions of lower symmetry within the structure. In addition, the data suggested ambi-site substitution of Mn, with it being present on both the Ge site and the La site. Assuming no change in La:Mn:Ge ratio, a composition of La{sub 9.18}Mn{sub 0.28}(GeO{sub 4}){sub 5.8}(MnO{sub 4}){sub 0.2}O{sub 2} was determined. As such there are nominally no interstitial oxide ions, but rather cation vacancies on the La site. Therefore, the high conductivity for this sample is most likely related to the introduction of Frenkel-type defects at higher temperature, as previously proposed for other apatite-type systems containing vacancies on the La site.

Kendrick, E. [Chemical Sciences, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom); Knight, K.S. [ISIS Facility, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX (United Kingdom); Slater, P.R., E-mail: p.r.slater@bham.ac.uk [School of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)

2009-08-05

500

Altering the equilibrium condition in Sr-doped lanthanum manganite.  

SciTech Connect

The material of choice for a solid oxide fuel cell cathode based on a yttria-stabilized zirconia (YSZ) electrolyte is doped lanthanum manganite, (La, Sr)MnO{sub 3}. It excels at many of the attributes necessary for a system to work at the required operating temperature and is flexible enough to allow for materials optimization. Although strontium-doping increases the electronic conductivity of the material, the ionic conductivity of the material remains negligible under operating conditions. Studies have shown that the internal equilibrium of the material heavily favors oxidation of the manganese and rather than the loss of lattice oxygen as a charge compensation mechanism. This lack of oxygen vacancies in the structure retards the ability of the material to conduct oxygen ions; thus the optimized system requires a large number of engineered triple point boundary locations to work efficiently. We have successfully doped the host LSM lattice to alter the interred equilibrium of the material to increase its ionic conductivity and thus lower the cathodic overpotential of the system. Our presentation will discuss these new materials, the results of cell tests, and a number of characterization experiments performed.

Carter, J. D.; Krumpelt, M.; Vaughey, J.; Wang, X.

1999-05-28