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


1

Cosine Interaction in CsF and RbF  

Science Journals Connector (OSTI)

A series of measurements of the line shape of the fluorine resonance versus magnetic field have been made using a molecular-beam apparatus. Good theoretical agreement has been found for RbF. The CsF behavior is complicated by the overlapping Cs spectrum. The equivalent field at the fluorine nucleus per unit molecular rotation, Hr, is found to be 2.28±0.20 gauss and 3.00±0.15 gauss for RbF and CsF respectively. These results are less than those previously measured.

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

1955-04-15T23:59:59.000Z

2

Angle-differential and momentum-transfer cross sections for e-+Rb, Cs, and Fr collisions at low energies: 3Fo shape resonances in Rb-, Cs-, and Fr- ions  

Science Journals Connector (OSTI)

Based on the relativistic Dirac R-matrix method, we calculate angle-dependent and momentum-transfer cross sections for electron scattering by Rb, Cs, and Fr atoms at impact energies below 3 eV. Our results for momentum transfer for e-+Rb and Cs collisions are compared with available data from swarm experiments. We find clear evidence for a Cs-(3Fo) shape resonance at 1.528 eV, in excellent agreement with angle-dependent electron-scattering measurements. We analyze and compare the 3Fo shape resonance in e-+Rb, Cs, and Fr elastic collisions.

C. Bahrim and U. Thumm

2001-07-17T23:59:59.000Z

3

Low-lying 3Po and 3Se states of Rb-, Cs-, and Fr-  

Science Journals Connector (OSTI)

Our Dirac R-matrix calculations suggest that none of the heavy alkali-metal negative ions, Rb, Cs, and Fr, has an excited bound state. Their lowest excited state appears to be a multiplet of 3PJo-shape resonances, the J=1 component of which was recently observed in photodetachment experiments on Cs-. We analyze these 3PJo and the 3Se excited negative ion states in partial and converged total scattering cross sections for slow electrons with incident kinetic energies below 120 meV. Our results are in excellent agreement with available experimental data. We also propose a new value for the electron affinity of Fr, provide the scattering length for electronic collisions with Rb, Cs, and Fr, and discuss the nuclear charge dependence of relativistic effects in the resonance profiles.

C. Bahrim and U. Thumm

2000-01-18T23:59:59.000Z

4

Optical rotation in RbTiOAsO4 (point group mm2) W. Kaminsky*, I  

E-Print Network [OSTI]

Optical rotation in RbTiOAsO4 (point group mm2) W. Kaminsky*, I , P. A. ThomasII and A. M. Glazer, UK Received March 5, 2001; accepted September 13, 2001 Abstract. Measurement of optical rotation in RbTiOAsO4 (RTA) with the tilter method resulted in an optical rotation of r12 ÂĽ Ăľ17Ă°3Ă? /mm

Kaminsky, Werner

5

Independent cross sections of Na, K, Rb, Cs, and Fr isotopes produced in Ta and U targets bombarded by C12 ions up to 77 MeV/nucleon  

Science Journals Connector (OSTI)

Isotopic distribution measurements for Na, K, Rb, Cs, and Fr in the reactions Ta181(C12, X)Na,K,Rb,Cs and U238(C12, X)Na,K,Rb,Cs,Fr at different energies E=13, 27, and 77 MeV/nucleon are reported. The independently observed yields of Rb and Cs show an important contribution for neutron-deficient nuclei. The U target shows very broad isotopic distributions which may be understood as a sum of two components. The results are compared to those obtained by nuclear reactions induced by protons over a wide energy range.NUCLEAR REACTIONS Ta181(C12, X)Na,K,Rb,Cs; U238(C12, X)Na,K,Rb,Cs,Fr; E=13, 27, 77 MeV/nucleon; measured Na, K, Rb, Cs, Fr isotopic distributions, heavy ion induced fission, spallation, on-line mass spectrometry.

M. de Saint Simon; S. Haan; G. Audi; A. Coc; M. Epherre; P. Guimbal; A. C. Mueller; C. Thibault; F. Touchard; M. Langevin

1982-12-01T23:59:59.000Z

6

The isotypic hydrogen phosphate and arsenate dihydrates M2HXO4?2H2O (M = Rb, Cs; X = P, As)  

Science Journals Connector (OSTI)

The four isotypic arsenate(V) and phosphate(V) dihydrates M2HXO4?2H2O (M = Rb, Cs; X = P, As) crystallize in the space group P21/c. A hypothetical proton-disordered C2/c structure is discussed.

St?ger, B.

2013-12-21T23:59:59.000Z

7

NMR relaxation study of the phase transitions and relaxation mechanisms of the alums MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb and Cs) single crystals  

SciTech Connect (OSTI)

The physical properties and phase transition mechanisms of MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb and Cs) single crystals have been investigated. The phase transition temperatures, NMR spectra, and the spin-lattice relaxation times T{sub 1} of the {sup 87}Rb and {sup 133}Cs nuclei in the two crystals were determined using DSC and FT NMR spectroscopy. The resonance lines and relaxation times of the {sup 87}Rb and {sup 133}Cs nuclei undergo significant changes at the phase transition temperatures. The sudden changes in the splitting of the Rb and Cs resonance lines are attributed to changes in the local symmetry of their sites, and the changes in the temperature dependences of T{sub 1} are related to variations in the symmetry of the octahedra of water molecules surrounding Rb{sup +} and Cs{sup +}. We also compared these {sup 87}Rb and {sup 133}Cs NMR results with those obtained for the trivalent cations Cr and Al in MCr(SO{sub 4}){sub 2}.12H{sub 2}O and MAl(SO{sub 4}){sub 2}.12H{sub 2}O crystals. - Graphical Abstract: The physical properties and phase transition mechanisms of MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb, Cs, and NH{sub 4}) single crystals have been investigated. Highlights: > The physical properties and phase transition mechanisms of MCr(SO{sub 4}){sub 2}.12H{sub 2}O (M=Rb and Cs) crystals {yields} The NMR spectra and the spin-lattice relaxation times T{sub 1} of the {sup 87}Rb and {sup 133}Cs nuclei in the two crystals {yields} The variations in the symmetry of the octahedra of water molecules surrounding Rb{sup +} and Cs{sup +}.

Lim, Ae Ran, E-mail: aeranlim@hanmail.net [Department of Science Education, Jeonju University, Jeonju 560-759 (Korea, Republic of); Paik, Younkee [Solid State Analysis Team, Korea Basic Science Institute, Daegu 702-701 (Korea, Republic of); Lim, Kye-Young [Department of Energy and Electrical Engineering, Korea Polytechnic University, Siheung 429-793 (Korea, Republic of)

2011-06-15T23:59:59.000Z

8

Shape resonances in ground-state diatomic molecules: General trends and the example of RbCs  

SciTech Connect (OSTI)

The presence of shape resonances due to tunneling through the centrifugal barrier modifies strongly the dynamics of cold atom scattering. As shown on the example of the ground and lowest triplet electronic states of the {sup 85}Rb{sup 133}Cs molecule, the crucial parameter is, as usual for cold collisions, the scattering length. A general description of shape resonances of diatomic molecules is given from three simple single channel asymptotic models, whose respective performances are discussed. The first model, which consists of a R{sup -6} potential limited at short range by a repulsive wall, positioned to reproduce the s-wave scattering length, accounts satisfactorily for the main system-independent properties of shape resonances. Introduction in the model of energy- and angular-momentum-dependent nodal lines specific to the inner part of the potential greatly improves its efficiency. When the energy and angular momentum dependence of the nodal lines cannot be deduced from full potential calculations or from experiment, a rough, but universal, estimate of these properties is obtained by extending the R{sup -6} behavior of the potential up to the origin.

Londono, B. E. [Instituto de Fisica, Universidad de Antioquia, Calle 67 No. 53-108, AA 1226, Medellin (Colombia); Laboratoire Aime Cotton, CNRS, Batiment 505, Universite Paris-Sud, F-91405 Orsay Cedex (France); Mahecha, J. E. [Instituto de Fisica, Universidad de Antioquia, Calle 67 No. 53-108, AA 1226, Medellin (Colombia); Luc-Koenig, E.; Crubellier, A. [Laboratoire Aime Cotton, CNRS, Batiment 505, Universite Paris-Sud, F-91405 Orsay Cedex (France)

2010-07-15T23:59:59.000Z

9

Measurement of the Spin-Orbit Perturbation in the P-State Continuum of Heavy Alkali-Metal Atoms: K, Rb, and Cs  

Science Journals Connector (OSTI)

The spin-orbit interaction for the P-state continuum of heavy alkali metals was investigated in a photoionization experiment using spin-polarized alkali atoms and circularly polarized light. From the asymmetry in ion-counting rates corresponding to the two photon helicities, Fano's spin-orbit perturbation parameter x was determined over a range of several hundred angstroms for K, Rb, and Cs. The spin-orbit perturbation was found to increase from K to Rb to Cs as expected, and the nonlinear behavior of x as a function of the photon energy E was demonstrated for K. Knowledge of x(E) was used to establish accurate values for the position of the Cooper minimum and to estimate the magnitude of the cross section at the minimum. In addition, the x(E) data for Cs were used to gain information about the spin polarization of photoelectrons in a Fano-type polarized electron source. Finally, extrapolation of x(E) for cesium into the discrete spectrum indicated the existence of a pole in the function ?(E) which corresponds to the doublet line-strength ratio ?(EnP)=S(nP32)S(nP12) at the discrete energies EnP. According to our extrapolation, the pole lies in the region of n=10 to 15, in agreement with the early spectroscopic work of Sambursky (1928) and Beutell (1939), whose measurements were discounted by later investigators.

G. Baum; M. S. Lubell; W. Raith

1972-03-01T23:59:59.000Z

10

A profound analysis of Rb2[PH] and Cs2[PH] and the role of [PH]2? ions during temperature-induced solid–solid phase transitions  

Science Journals Connector (OSTI)

Abstract The temperature-induced solid–solid transformation of Rb2[PH] and Cs2[PH] is characterized from both experiment and theory. Neutron diffraction, IR-spectroscopy and ab-initio molecular dynamics simulations reveal an asymmetric shift of the lattice constants at 80 K. The molecular mechanism of the structural transformation as identified from IR-spectroscopy and ab-initio molecular dynamics simulations is closely connected to the orientation of the [PH]2? moieties which undergo a partial order–disorder phase transition.

M. Somer; H.G.v. Schnering; O. Hochrein; D. Zahn

2014-01-01T23:59:59.000Z

11

The AFeO{sub 2} (A=K, Rb and Cs) family: A comparative study of structures and structural phase transitions  

SciTech Connect (OSTI)

Structures and phase transitions for the isostructural series of compounds KFeO{sub 2}, RbFeO{sub 2} and CsFeO{sub 2} have been systematically studied by synchrotron X-ray high resolution powder diffraction experiments and in case of CsFeO{sub 2} also by single crystal diffractometry. At room temperature, all of the three compounds crystallize in the orthorhombic (Pbca) KGaO{sub 2} type of structure consisting of a three dimensional network of corner-sharing [FeO{sub 4/2}]{sup -} tetrahedra, which at elevated temperatures shows a reversible phase transformation to a cubic structure (space group Fd3-barm). For KFeO{sub 2}, RbFeO{sub 2} and CsFeO{sub 2} this phase transformation takes place at 1003 K, 737 K and 350 K respectively, as confirmed by differential scanning calorimetry and X-ray diffraction. Upon heating through the transitions the major structural changes are driven by the onset or enhancement of librational motion of the FeO{sub 4} tetrahedra. Due to this phenomenon the Fe-O-Fe bonds appear to step-wise getting straight, seemingly approaching 180 deg. within the time and space averaged structure. - Graphical abstract: Reciprocal layer hk0 for the orthorhombic room temperature phase, with pseudo cubic symmetry due to twinning, and the cubic high temperature phase of CsFeO{sub 2}. Upon heating the major structural changes are driven by the enhancement of librational motion of the [FeO{sub 4/2}]{sup -} corner-sharing tetrahedra, a phenomenon related to the high/low phase transition of cristobalite.

Ali, Naveed Zafar; Nuss, Juergen [Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, D-70569 Stuttgart (Germany); Sheptyakov, Denis [Laboratory for Neutron Scattering, ETH Zurich and PSI Villigen, CH-5232 Villigen PSI (Switzerland); Jansen, Martin, E-mail: m.jansen@fkf.mpg.d [Max-Planck-Institut fuer Festkoerperforschung, Heisenbergstrasse 1, D-70569 Stuttgart (Germany)

2010-03-15T23:59:59.000Z

12

Chapter 11 - Systematic Study of the Electronic Properties and Trends in the LiX (X = Na, K, Rb, Cs and Fr) Molecules  

Science Journals Connector (OSTI)

Abstract Alkali mixed diatomic molecules exhibit significant permanent dipole moment. They constitute a prototype of an ultra-cold quantum gas, which makes them candidates for fundamental quantum processes. This requires knowledge of their accurate electronic properties to guide the ongoing experiments. For this purpose, we have investigated the structure and spectroscopic properties of the first electronic states of 1,3?+, 1,3?, 1,3? symmetries for LiNa, LiK, LiRb, and LiCs molecules. We have used an ab initio approach based on pseudopotential techniques: parameterized l-dependent polarization potentials and full configuration interaction calculations through the CIPCI quantum chemistry package. The spectroscopic constants (Re, De, ?e, ?exe, and Be) of these states are derived and compared with the available theoretical and experimental work. In addition to the potential energy, accurate permanent and transition dipole moments are determined for a wide range of internuclear distances. A systematic study and analysis of the trend of the permanent dipole moments around the equilibrium distance of the ground state of LiX (X = Na, K, Rb, Cs and Fr) molecules are done. The results, compared to available theoretical and experimental work, show good agreement.

S. Bellayouni; I. Jendoubi; N. Mabrouk; H. Berriche

2014-01-01T23:59:59.000Z

13

{sup 129}Xe-Cs (D{sub 1},D{sub 2}) versus {sup 129}Xe-Rb (D{sub 1}) spin-exchange optical pumping at high xenon densities using high-power laser diode arrays  

SciTech Connect (OSTI)

We investigate {sup 129}Xe-Cs (D{sub 1},D{sub 2}) spin exchange optical pumping (SEOP) at high Xe densities ({approx}0.12-2.44 amagat) using newly available high-power (>40 W) laser diode arrays and compare with {sup 129}Xe-Rb D{sub 1} SEOP under similar conditions. At elevated Xe densities, the spin-exchange rate (per alkali-metal atom, {gamma}{sup '}) for Cs-{sup 129}Xe is {approx}1.5-fold greater than that for Rb-{sup 129}Xe. Higher spin-exchange rates and lower {sup 129}Xe spin-destruction rates for Cs-{sup 129}Xe versus Rb-{sup 129}Xe contribute to {approx}twofold improvement in {sup 129}Xe nuclear spin polarization measured at 9.4 T - with the largest gains observed at the highest Xe densities.

Whiting, Nicholas; Eschmann, Neil A.; Goodson, Boyd M.; Barlow, Michael J. [Department of Chemistry and Biochemistry, Southern Illinois University, Carbondale, Illinois 62901 (United States); Sir Peter Mansfield Magnetic Resonance Centre, University of Nottingham, Nottingham, NG7 2RD (United Kingdom)

2011-05-15T23:59:59.000Z

14

Vacancy hardening in single-crystal TiNx,,001... layers C.-S. Shin, D. Gall,a)  

E-Print Network [OSTI]

Vacancy hardening in single-crystal TiNx,,001... layers C.-S. Shin, D. Gall,a) N. Hellgren, J; accepted 27 February 2003 We investigate the effect of N vacancies on the mechanical properties are entirely due to anion vacancies. Hardness values increase continuously, while the elastic modulus decreases

Gall, Daniel

15

Energy resolution and energy-light response of CsI(TI) scintillators for charged particle detection  

E-Print Network [OSTI]

This article describes the crystal selection and quality control utilized to develop and calibrate a high resolution array of CsI(TI) scintillator crystals for the detection of energetic charged particles. Alpha sources are used to test the light output variation due to thallium doping gradients. Selection of crystals with better than 1% non-uniformity in light output is accomplished using this method. Tests with 240 MeV alpha beam reveal that local light output variations within each of the tested CsI(TI) crystals limit the resolution to about 0.5%. Charge and mass dependences in the energy - light output relationship are determined by calibrating with energetic projectile fragmentation beams.

A. Wagner; W. P. Tan; K. Chalut; R. J. Charity; B. Davin; Y. Larochelle; M. D. Lennek; T. X. Liu; W. G. Lynch; A. M. Ramos; R. Shomin; L. G. Sobotka; R. T. de Souza; M. B. Tsang; G. Verde; H. S. Xu

2000-04-28T23:59:59.000Z

16

Ion mobility and phase transitions in heptafluorodiantimonates(III) Cs(1?x)(NH4)xSb2F7 and K0.4Rb0.6Sb2F7 according to NMR and DSC data  

Science Journals Connector (OSTI)

Abstract Ion mobility and phase transitions in heptafluorodiantimonates(III) Cs1?x(NH4)xSb2F7 (x = 0.2; 0.6) and K0.4Rb0.6Sb2F7 were studied by the 19F, 1H NMR and DSC. The character of ionic motions in fluoride and ammonium sublattices with temperature variations was investigated. Types of ion motions and temperature ranges in which they are observed were determined. It was found that the predominant form of ionic motions in high-temperature modifications is a diffusion of fluorine atoms, whereas the number of diffusing ammonium ions depends on the sample composition. The observed phase transitions in heptafluorodiantimonates(III) of cesium–ammonium and potassium–rubidium with a formation of high-temperature modifications are transitions into a superionic state (? > 10?3 S/cm above 450 K).

V.Ya. Kavun; M.M. Polyantsev; L.A. Zemnukhova; A.B. Slobodyuk; V.I. Sergienko

2014-01-01T23:59:59.000Z

17

Structural and conductivity studies of CsKSO{sub 4}Te(OH){sub 6} and Rb{sub 1.25}K{sub 0.75}SO{sub 4}Te(OH){sub 6} materials  

SciTech Connect (OSTI)

The crystal structures of the title compounds were solved using the single-crystal X-ray diffraction technique. At room temperature CsKSO{sub 4}Te(OH){sub 6} was found to crystallize in the monoclinic system with Pn space group and lattice parameters: a=12.5463(6)A; b=6.5765(2)A; c=12.6916(7)A; {beta}=106.53(2){sup o}; V=1003.914(4)A{sup 3}; Z=4 and D{sub calc.}=3.29g/cm{sup 3}. The structural refinement has led to a reliability factor of R{sub 1}=0.0284 (wR{sub 2}=0.064) for 7577 independent reflections. Rb{sub 1.25}K{sub 0.75}SO{sub 4}Te(OH){sub 6} material possesses a monoclinic structure with space group P2{sub 1}/a and cell parameters: a=11.3411(6)A; b=6.5819(2)A; c=13.5730(8)A; {beta}=106.860(10){sup o}; V=969.62(10)A{sup 3}; Z=4 and D=3.16(3)g/cm{sup 3}. The residuals are R{sub 1}=0.0297 and wR{sub 2}=0.0776 for 3336 independent reflections. The main interest of these structures is the presence of two different and independent anionic groups (TeO{sub 6}{sup 6-} and SO{sub 4}{sup 2-}) in the same crystal. Complex impedance measurements (Z*=Z{sup '}-iZ{sup '}') have been undertaken in the frequency and temperature ranges 20-10{sup 6}Hz and 400-600K, respectively. The dielectric relaxation is studied in the complex modulus formalism M*.

Chabchoub, N. [Laboratoire de Physique Appliquee, Faculte des Sciences de Sfax, 3018 Sfax (Tunisia)]. E-mail: nizar_chabchoub@yahoo.fr; Darriet, J. [Institut de Chimie de la Matiere Condensee de Bordeaux, ICMCB-CNRS, 33608 Pessac cedex (France); Khemakhem, H. [Laboratoire de Physique Appliquee, Faculte des Sciences de Sfax, 3018 Sfax (Tunisia)

2006-07-15T23:59:59.000Z

18

Cold collisions of Rb and Cs atoms  

E-Print Network [OSTI]

Jamieson,M.J. Sarbazi-Azad,H. 18'th International Conference on Atomic Physics, MIT, Cambridge, MA, USA Academic Press

Jamieson, M.J.

19

1 000 000 "C/s thin film electrical heater: ln situ resistivity measurements of Al and Ti/Si thin films during ultra rapid thermal annealing  

E-Print Network [OSTI]

introduce a new technique for rapidly heating (10' "C/s) thin films using an electrical thermal annealing- ently, most commercial RTA systems use radiation-heating techniques via tungsten-halogen lamps. These systems typi- cally have a maximum heating rate of 100-300 "C/s. We introduce an alternative methodfor

Allen, Leslie H.

20

New hypodiphosphates of the alkali metals: Synthesis, crystal structure and vibrational spectra of the hypodiphosphates(IV) M{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] (M=Rb and Cs)  

SciTech Connect (OSTI)

The new hypodiphosphates(IV) Rb{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] (1) and Cs{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] (2) were synthesized by soft chemistry reactions from aqueous solutions of hypophosphoric acid and the corresponding heavy alkali-metal carbonates. Their crystal structures were determined by single crystal X-ray diffraction. Both compounds crystallize isotypic in the triclinic space group P-1 with one formula unit in the unit cell. The structures are built up by discrete (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) units in staggered conformation for the P{sub 2}O{sub 6} skeleton and the corresponding alkali-metal cations. In the (H{sub 2}P{sub 2}O{sub 6}){sup 2-} ion the hydrogen atoms are in a 'trans-trans' conformation. O{center_dot}H-O hydrogen bonds between the (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) groups consolidate the structures into a three-dimensional network. The FT-Raman and {sup 31}P and {sup 1}H and MAS NMR spectra of the title compounds have been recorded and interpreted, especially with respect to their assignment to the (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) groups. Thermogravimetric data of 2 have been interpreted in terms of a thermal decomposition model. - Graphical Abstract: The layered compounds Rb{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] and Cs{sub 2}[(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})] have been synthesized and investigated. Both crystallize isotypic. The structures are built up by discrete (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) units and the corresponding alkali-metal cations. Highlights: Black-Right-Pointing-Pointer Synthesis and single-crystal structure of new alkali hypodiphosphates. Black-Right-Pointing-Pointer Structures are characterized by [(H{sub 2}P{sub 2}O{sub 6})(H{sub 4}P{sub 2}O{sub 6})]{sup 2-} units and M{sup +} cations. Black-Right-Pointing-Pointer (H{sub 2}P{sub 2}O{sub 6}){sup 2-} and (H{sub 4}P{sub 2}O{sub 6}) units are linked by short hydrogen bonds. Black-Right-Pointing-Pointer Both compounds are characterized by {sup 31}P MAS-NMR spectra.

Wu, Peng [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany)] [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany); Wiegand, Thomas; Eckert, Hellmut [Institut fuer Physikalische Chemie and Graduate School of Chemistry, Westfaelische Wilhelms-Universitaet Muenster, Corrensstr. 28/30, D-48149 Muenster (Germany)] [Institut fuer Physikalische Chemie and Graduate School of Chemistry, Westfaelische Wilhelms-Universitaet Muenster, Corrensstr. 28/30, D-48149 Muenster (Germany); Gjikaj, Mimoza, E-mail: mimoza.gjikaj@tu-clausthal.de [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany)] [Institut fuer Anorganische und Analytische Chemie der TU Clausthal, Paul-Ernst-Strasse 4, D-38678 Clausthal-Zellerfeld (Germany)

2012-10-15T23:59:59.000Z

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


21

Gas-Phase Reactivity of the Ti8C12+ Met-car with Triatomic Sulfur-Containing Molecules:? CS2, SCO, and SO2  

Science Journals Connector (OSTI)

Optimal production of the Ti8C12+ met-car occurred with a sputtering power of 220 W (at 1.15 amps), a total source pressure of 5?6 Torr (Ar/CH4 + He), and an aggregation distance of ?3 cm (1e). ... 13 For water and ammonia the most prominent cluster adducts have eight ligands (n = 8), while the addition of four ligands (n = 4) is most probable for ?-bonded benzene. ... Met-Cars: a unique class of molecular clusters ...

James M. Lightstone; Melissa J. Patterson; Ping Liu; Michael G. White

2006-02-14T23:59:59.000Z

22

Near-yrast, medium-spin, excited states of {sup 91}Rb, {sup 93}Rb, and {sup 95}Rb  

SciTech Connect (OSTI)

The medium-spin structure of the nuclei {sup 93}Rb and {sup 95}Rb is studied following the neutron-induced fission of {sup 235}U at the PF1B neutron guide, using the FIFI spectrometer, and at the Lohengrin mass spectrometer of the Institut Laue-Langevin Grenoble. These nuclei, plus {sup 91}Rb, are also studied following the spontaneous fission of {sup 248}Cm and {sup 252}Cf sources, using the EUROGAM-II and Gammasphere detector arrays, respectively. A high-spin isomeric state, with a half-life of 111(11) ns, is found in {sup 93}Rb at an excitation energy of 4422.4 keV, which most likely corresponds to the fully aligned [{pi}(g{sub 9/2}) x {nu}(g{sub 7/2}h{sub 11/2})]{sub 27/2}{sup -} configuration. An analogous configuration is proposed for the 5297.9-keV level observed in {sup 91}Rb. A new E3 decay branch of the 1133.9-keV isomer in {sup 91}Rb is found, for which the rather low transition rate of B(E3)=3.8(10) W.u. is determined. The energy of the isomeric state of {sup 95}Rb is now proposed to be at 810.6 keV, with a spin of (9/2{sup +}), and its half-life determined to be T{sub 1/2}=94(7) ns. A cascade of prompt transitions is observed on top of the 810.6-keV isomer in {sup 95}Rb. The near-yrast structures of {sup 91}Rb, {sup 93}Rb, and {sup 95}Rb are compared to the results of shell-model calculations, which support the proposed 27/2{sup -} interpretation of states in {sup 91}Rb and {sup 93}Rb. An analogous 27/2{sup -} state is expected to occur in {sup 95}Rb, as a long-lived isomer at 3.24 MeV. No such isomeric decay could be observed in a measurement using the Lohengrin spectrometer, which shows that, if it exists, its population, following the fission of {sup 235}U, is at least four times lower than that of the analogous 27/2{sup -} isomer in {sup 97}Y.

Simpson, G. S. [LPSC, Universite Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble Cedex (France); Urban, W. [Institut Laue-Langevin, 6 rue J. Horowitz, F-38042 Grenoble (France); Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00-681 Warsaw (Poland); Sieja, K. [Institute Pluridisciplinaire Hubert Curien, 23 rue du Loess, 67037 Strasbourg Cedex (France); Dare, J. A.; Orlandi, R.; Smith, A. G.; Tsekhanovich, I.; Varley, B. J.; Durell, J. L.; Smith, J. F. [Department of Physics and Astronomy, University of Manchester, M13 9PL Manchester (United Kingdom); Jolie, J.; Linneman, A. [Institut fuer Kernphysik, Universitaet zu Koeln, Zuelpicherstr. 77, D-50937 Koeln (Germany); Scherillo, A. [Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX (United Kingdom); Soldner, T.; Faust, H. [Institut Laue-Langevin, 6 rue J. Horowitz, F-38042 Grenoble (France); Zlomaniec, A.; Rzaca-Urban, T. [Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00-681 Warsaw (Poland); Ahmad, I.; Greene, J. P. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)

2010-08-15T23:59:59.000Z

23

Radiation damage in undoped CsI and CsI(Tl)  

SciTech Connect (OSTI)

Radiation damage has been studied in undoped CsI and CsI(TI) crystals using [sup 60]Co gamma radiation for doses up to [approximately] 4.2 [times] 10[sup 6]. Samples from various manufacturers were measured ranging in size from 2.54 cm long cylinders to a 30 cm long block. Measurements were made on the change in optical transmission and scintillation light output as a function of dose. Although some samples showed a small change in transmission, a significant change in light output was observed for all samples. Recovery from damage was also studied as a function of time and exposure to UV light. A short lived phosphorescence was observed in undoped CsI, similar to the phosphorescence seen in CsI(TI).

Woody, C.L.; Kierstead, J.A.; Levy, P.W.; Stoll, S.

1992-01-01T23:59:59.000Z

24

Radiation damage in undoped CsI and CsI(Tl)  

SciTech Connect (OSTI)

Radiation damage has been studied in undoped CsI and CsI(TI) crystals using {sup 60}Co gamma radiation for doses up to {approximately} 4.2 {times} 10{sup 6}. Samples from various manufacturers were measured ranging in size from 2.54 cm long cylinders to a 30 cm long block. Measurements were made on the change in optical transmission and scintillation light output as a function of dose. Although some samples showed a small change in transmission, a significant change in light output was observed for all samples. Recovery from damage was also studied as a function of time and exposure to UV light. A short lived phosphorescence was observed in undoped CsI, similar to the phosphorescence seen in CsI(TI).

Woody, C.L.; Kierstead, J.A.; Levy, P.W.; Stoll, S.

1992-12-01T23:59:59.000Z

25

The RB Language Jonathan M. Smith  

E-Print Network [OSTI]

­­ ­­ The RB Language Jonathan M. Smith Distributed Systems Laboratory Department of Computer of an attempt to generate more practical examples of the scheme described by Smith and Maguire for ``competitive

26

Two spatially separated phases in semiconducting Rb0.8Fe1.5S2  

SciTech Connect (OSTI)

We report neutron scattering and transport measurements on semiconducting Rb0.8Fe1.5S2, a compound isostructural and isoelectronic to the well-studied A0.8FeySe2(A = K, Rb, Cs, Tl/K) superconducting systems. Both resistivity and dc susceptibility measurements reveal a magnetic phase transition at T = 275 K. Neutron diffraction studies show that the 275 K transition originates from a phase with rhombic iron vacancy order which exhibits an in-plane stripe antiferromagnetic ordering below 275 K. In addition, the stripe antiferromagnetic phase interdigitates mesoscopically with an ubiquitous phase with 5 5 iron vacancy order. This phase has a magnetic transition at TN = 425 K and an iron vacancy order-disorder transition at TS = 600 K. These two different structural phases are closely similar to those observed in the isomorphous Se materials. Based on the close similarities of the in-plane antiferromagnetic structures, moments sizes, and ordering temperatures in semiconducting Rb0.8Fe1.5S2 and K0.81Fe1.58Se2, we argue that the in-plane antiferromagnetic order arises from strong coupling between local moments. Superconductivity, previously observed in the A0.8FeySe2 zSz system, is absent in Rb0.8Fe1.5S2, which has a semiconducting ground state. The implied relationship between stripe and block antiferromagnetism and superconductivity in these materials as well as a strategy for further investigation is discussed in this paper.

Wang, Meng [University of California, Berkeley; Tian, Wei [ORNL; Valdivia, P. [University of California, Berkeley; Chi, Songxue [ORNL; Bourret-Courchesne, E. D. [Lawrence Berkeley National Laboratory (LBNL); Dai, Pengcheng [Rice University; Birgeneau, R. J. [University of California, Berkeley

2014-01-01T23:59:59.000Z

27

Improving CS regulations.  

SciTech Connect (OSTI)

President Carter issued Executive Order 12044 (3/28/78) that required all Federal agencies to distinguish between significant and insignificant regulations, and to determine whether a regulation will result in major impacts. This study gathered information on the impact of the order and the guidelines on the Office of Conservation and Solar Energy (CS) regulatory practices, investigated problems encountered by the CS staff when implementing the order and guidelines, and recommended solutions to resolve these problems. Major tasks accomplished and discussed are: (1) legislation, Executive Orders, and DOE Memoranda concerning Federal administrative procedures relevant to the development and analysis of regulations within CS reviewed; (2) relevant DOE Orders and Memoranda analyzed and key DOE and CS staff interviewed in order to accurately describe the current CS regulatory process; (3) DOE staff from the Office of the General Counsel, the Office of Policy and Evaluation, the Office of the Environment, and the Office of the Secretary interviewed to explore issues and problems encountered with current CS regulatory practices; (4) the regulatory processes at five other Federal agencies reviewed in order to see how other agencies have approached the regulatory process, dealt with specific regulatory problems, and responded to the Executive Order; and (5) based on the results of the preceding four tasks, recommendations for potential solutions to the CS regulatory problems developed. (MCW)

Nesse, R.J.; Scheer, R.M.; Marasco, A.L.; Furey, R.

1980-10-01T23:59:59.000Z

28

CS 4317 Human-Computer Interaction Course Number: CS4317  

E-Print Network [OSTI]

interaction. Theory of human-computer interaction. Development methods for interfaces such as user1 CS 4317 Human-Computer Interaction Course Number: CS4317 Course Title: Human-Computer Interaction Course Instructors Nigel Ward Course Description: CS4317: Models and methods of human-computer

Ward, Karen

29

Spin Waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2  

SciTech Connect (OSTI)

The parent compounds of iron pnictide superconductors are bad metals with a collinear antiferromagnetic structure and Neel temperatures below 220 K. Although alkaline iron selenide A{sub y}Fe{sub 1.6+x}Se{sub 2} (A = K, Rb, Cs) superconductors are isostructural with iron pnictides, in the vicinity of the undoped limit they are insulators, forming a block antiferromagnetic order and having Neel temperatures of roughly 500 K. Here we show that the spin waves of the insulating antiferromagnet Rb{sub 0.89}Fe{sub 1.58}Se{sub 2} can be accurately described by a local moment Heisenberg Hamiltonian. A fitting analysis of the spin wave spectra reveals that the next-nearest neighbour couplings in Rb{sub 0.89}Fe{sub 1.58}Se{sub 2}, (Ba,Ca,Sr)Fe{sub 2}As{sub 2}, and Fe{sub 1.05}Te are of similar magnitude. Our results suggest a common origin for the magnetism of all the Fe-based superconductors, despite having different ground states and antiferromagnetic orderings.

Wang, Miaoyin [ORNL; Fang, Chen [Purdue University; Yao, Dao-Xin [unknown; Tan, Guotai [ORNL; Harriger, Leland W [ORNL; Song, Yu [ORNL; Netherton, Tucker J [ORNL; Zhang, Chenglin [ORNL; Wang, Meng [ORNL; Stone, Matthew B [ORNL; Tian, Wei [Ames Laboratory and Iowa State University; Hu, Jiangping [Purdue University and Chinese Academy of Sciences; Dai, Pengcheng [University of Tennessee, Knoxville (UTK)

2011-01-01T23:59:59.000Z

30

-The Core of CS -Curricula  

E-Print Network [OSTI]

- Advanced Courses #12;The Core of CS Curricula #12;CS Body of Knowledge Area > Unit > Topic Core vs elective#12;ACM vs U S I #12;- The Core of CS - Curricula - Introductory Courses - Intermediate Courses Introductory Intermediate Advanced Core Elective Units #12;Courses Introductory Intermediate Advanced Core

Hauswirth, Matthias

31

A New Rb Lamp Exciter Circuit for Rb atomic clocks and Studies on Transition from Ring to Red mode  

E-Print Network [OSTI]

In this paper we describe the development of novel RF exciter circuit for electrode less Rb lamp. The lamp exciter circuit is a RF oscillator with a a new configuration operating at 60 to 65 MHz frequency with 3 to 4 watt power. The Rb lamp is used in exciting the ground state hyperfine transitions in Rb atom in a glass cell placed inside a tuned microwave cavity, As the frequency of these hyperfine transitions is very stable it is used in the development of Rb atomic clock by phase locking the oven controlled crystal oscillator (OCXO) to this atomic transition frequency. The details of the Rb lamp exciter are presented in the paper.The Lamp is ideally operated in ring mode as in this mode the linewidth is narrow and there is no self reversal. However, high temperature and RF excitation power may drive the Rb lamp to red mode which gives rise to line broadening and self reversal. It is the experience that mode change from ring to red deteriorates the atomic signal strength and S/N. In this paper the reasons of mode change are also discussed.

Savita Singh; Bikash Ghosal; G M Saxena

2010-11-10T23:59:59.000Z

32

CRITICALITY SAFETY (CS)  

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

Objective CS.1 - A criticality safety program is established, sufficient numbers of qualified personnel are provided, and adequate facilities and equipment are available to ensure criticality safety support services are adequate for safe operations. (Core Requirements 1, 2, and 6) Criteria * Functions, assignments, responsibilities, and reporting relationships are clearly defined, understood, and effectively implemented. * Operations support personnel for the criticality safety area are adequately staffed and trained. Approach Record Review: Review the documentation that establishes the Criticality Safety Requirements (CSRs) for appropriateness and completeness. Review for adequacy and completion the criticality safety personnel training records that indicate training on facility procedures and systems under

33

CRITICALITY SAFETY (CS)  

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

OBJECTIVE CS.1 The LANL criticality safety program provides the required technical guidance and oversight capabilities to ensure a comprehensive criticality safety program for the storage of nuclear materials in SSTs. (Core Requirements 3, 4, 8) Criteria * The Criticality Safety Program is an administrative TSR and meets the General and * Specific Requirements of DOE O 420.1A, Section 4.3 Nuclear Criticality Safety. * All processes and operations involving significant quantities of fissile materials are * described in current procedures approved by line management. * Procedures contain approved criticality controls and limits, based on HSR-6 evaluations and recommendations. * Supervisors, operations personnel, and criticality safety officers have received

34

Spring 2006 CS 649 1 Sensor Networks  

E-Print Network [OSTI]

· Execution engine for scripting language · Code size #12;Programming Wireless Sensors Spring 2006 CS 649 3Spring 2006 CS 649 1 CS649 Sensor Networks Lecture 25: Reprogramming Andreas Terzis http://hinrg.cs.jhu.edu/wsn06/ #12;Outline Spring 2006 CS 649 2 · Problem: Reprogram the network after it is deployed

Amir, Yair

35

Ti Plasmid  

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

Ti Plasmid Ti Plasmid Name: Dixenia Location: N/A Country: N/A Date: N/A Question: What can you tell me about the Ti Plasmid? Replies: This plasmid is named for a plasmid found in a bacteria called Agrobacter tumefaciens. It causes "plant cancer" or what are known as galls. They are little tumors in which the bacteria can grow and live in the plant. Ti stands for tumor inducing. The bacterium gets into the plant through some kind of wound, ie. a scratch. It injects its plasmid into a plant cell and the plasmid inserts its DNA into the plant's DNA. Then the DNA directs the plant to make a hollow tumor where the bacteria can live. Scientists have taken advantage of this plant's ability to insert foreign DNA into a plant. They take the genes out of the plasmid that cause galls, and insert genes of interest, ie. genes for pest resistance and let the plasmid carry those genes into the plant. The plant will start making the product you want. You may have seen a picture of a tobacco plant glowing because firefly genes for glowing were inserted into the plant. They did this so they could know if the gene had made it into the plant. Once they are sure the gene they want has made it into the plant, they clone the plant cells. By the way, plant tissue culture is a procedure that is very common and has been done for years, this is not the same as cloning animals.

36

Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb...  

Office of Science (SC) Website

by extracting it from an 82Sr-82Rb generator. Much as a battery is used to store electricity, the radioactive 82Sr with its long 25.35 days half-life serves as an "82Rb...

37

Contrle structural du partage de Rb entre fluide et micas potassiques dans les pegmatites du Brsil  

E-Print Network [OSTI]

and spodumene' [2 and 5], rich in Rb, Li, Ta and Sn, and comparable to the Greenbushes Pegmatites of Australia

Boyer, Edmond

38

Rechnerarchitekturen und Betriebssysteme (CS201)  

E-Print Network [OSTI]

-471-26272-2 Uebungen: Labor-Stil (Elektronikkasten, Sensor µ-Prozessoren wie "Berkeley Motes", Arduino, Lego Mindstorm Raspberry Pi ($ 35), Arduino, Projekt Microduino . . . c Christian Tschudin CS201 ­ Rechnerarchitekturen und

Vetter, Thomas

39

CAES MaCS Home  

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

is largely made possible through its partnership with the Advanced Test Reactor National Scientific User Facility (ATR NSUF). MaCS is complementary to the Boise State Center for...

40

Why students drop out CS1 course?  

Science Journals Connector (OSTI)

This study focuses on CS minor students' decisions to drop out from the CS1 course. The high level of drop out percentage has been a problem at Helsinki University of Technology for many years. This course has yearly enrolment of 500-600 students and ... Keywords: CS1, drop out reasons, non-major CS students

Päivi Kinnunen; Lauri Malmi

2006-09-01T23:59:59.000Z

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


41

Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep  

Open Energy Info (EERE)

Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep Geothermal Drill Holes, Fenton Hill, New Mexico Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Rb-Sr Geochronologic Investigation Of Precambrian Samples From Deep Geothermal Drill Holes, Fenton Hill, New Mexico Details Activities (2) Areas (1) Regions (0) Abstract: Analyses of twenty-six gneissic whole rocks from the depth range 732-2588 m in drill hole GT-2 yield a 1.62 ± 0.04 b.y. isochron age with initial 86Sr/86Sr (Ro) = 0.7067 ± 0.0014; this age is in agreement with radiometric ages reported for rocks elsewhere in north-central New Mexico. A preliminary isochron age of 1.92 ± 0.18 b.y. with Ro = 7014 ± 0.0025 from the nearby drill hole GT-1 is defined by eight samples. Because these

42

Ts&Cs FP  

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

6/14/11 6/14/11 Page 1 of 17 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-FP (06/14/11) Section II STANDARD TERMS AND CONDITIONS FOR FIRM-FIXED PRICE CONTRACTS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. FP01 - ACCEPTANCE OF TERMS AND CONDITIONS (Ts&Cs) Contractor, by signing this contract and/or delivering items or services ordered under this contract, agrees to comply with all the Ts&Cs and all specifications and other documents that this contract incorporated by reference or attachment. Sandia hereby objects to any Ts&Cs contained in any acknowledgment of this contract

43

09/15/2011! CS4961! CS4961 Parallel Programming  

E-Print Network [OSTI]

.out ·Note that editing on water is somewhat primitive ­ I'm using vim. Apparently, you can edit on CADE machines and just run on water. Or you can try vim, too. 09/15/2011! CS4961! 4! #12;9/15/11 2 Today

Hall, Mary W.

44

Quantum electrodynamics corrections to energies, transition amplitudes, and parity nonconservation in Rb, Cs, Ba+, Tl, Fr, and Ra+  

Science Journals Connector (OSTI)

We use the previously developed radiative potential method to calculate quantum electrodynamic (QED) corrections to energy levels and electric dipole transition amplitudes for atoms which are used for the study of the parity nonconservation (PNC) in atoms. The QED shift in energies and dipole amplitudes leads to noticeable change in the PNC amplitudes. This study compliments the previously considered QED corrections to the weak matrix elements. We demonstrate that the QED corrections due to the change in energies and dipole matrix elements are comparable in value to those due to the change in weak matrix elements and therefore must be included.

B. M. Roberts; V. A. Dzuba; V. V. Flambaum

2013-05-13T23:59:59.000Z

45

SF6432-CS Commercial Services  

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

7/31/13 7/31/13 Page 1 of 18 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-CS (07/2013) SECTION II STANDARD TERMS AND CONDITIONS FOR COMMERCIAL SERVICES THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS AND CONDITIONS (Ts&Cs) APPLICABLE LAW ASSIGNMENT BANKRUPTCY CANCELLATION OR TERMINATION FOR CONVENIENCE CHANGES COMPLIANCE WITH LAWS DEFINITIONS DISPUTES EXCUSABLE DELAYS EXPORT CONTROL ORDER OF PRECEDENCE PAYMENT PERFORMANCE EVALUATION PROGRAM

46

Reactive barriers for {sup 137}Cs retention  

SciTech Connect (OSTI)

{sup 137}Cs was dispersed globally by cold war activities and, more recently, by the Chernobyl accident. Engineered extraction of {sup 137}Cs from soils and groundwaters is exceedingly difficult. Because the half life of {sup 137}Cs is only 30.2 years, remediation might be more effective (and less costly) if {sup 137}Cs bioavailability could be demonstrably limited for even a few decades by use of a reactive barrier. Essentially permanent isolation must be demonstrated in those few settings where high nuclear level wastes contaminated the environment with {sup 135}Cs (half life 2.3x10{sup 6} years) in addition to {sup 137}Cs. Clays are potentially a low-cost barrier to Cs movement, though their long-term effectiveness remains untested. To identify optimal clays for Cs retention Cs resorption was measured for five common clays: Wyoming Montmorillonite (SWy-1), Georgia Kaolinites (KGa-1 and KGa-2), Fithian Illite (F-Ill), and K-Metabentonite (K-Mbt). Exchange sites were pre-saturated with 0.16 M CsCl for 14 days and readily exchangeable Cs was removed by a series of LiNO{sub 3} and LiCl washes. Washed clay were then placed into dialysis bags and the Cs release to the deionized water outside the bags measured. Release rates from 75 to 139 days for SWy-1, K-Mbt and F- 111 were similar; 0.017 to 0.021% sorbed Cs released per day. Both kaolinites released Cs more rapidly (0.12 to 0.05% of the sorbed Cs per day). In a second set of experiments, clays were doped for 110 days and subjected to an extreme and prolonged rinsing process. All the clays exhibited some capacity for irreversible Cs uptake so most soils have some limited ability to act as a natural barrier to Cs migration. However, the residual loading was greatest on K-Mbt ({approximately} 0.33 wt% Cs). Thus, this clay would be the optimal material for constructing artificial reactive barriers.

KRUMHANSL,JAMES L.; BRADY,PATRICK V.; ANDERSON,HOWARD L.

2000-05-19T23:59:59.000Z

47

Development of Composite Adsorbents for LLW Treatment and Their Adsorption Properties for Cs and Sr - 13127  

SciTech Connect (OSTI)

In this study, the composite adsorbents (KCoFC-NM (NM: natural mordenite), KCoFC-SG (SG: porous silica gel), AMP-SG and so on) were prepared by impregnation-precipitation methods. As for the distribution properties, the largest K{sub d,Cs} value of 3.8 x 10{sup 4} cm{sup 3}/g was obtained for KCoFC-SG (Davi.) composite. KCoFC-SG (NH, MB5D) and T-KCFC also had relatively large K{sub d,Cs} values above 1.0 x 10{sup 4} cm{sup 3}/g. The uptake rate of Cs{sup +} ions was examined by batch method. KCoFC-SG (NH, MB5D) and AMP-SG (Davi.) had relatively large uptake rate of Cs{sup +}, and the uptake attained equilibrium within 1 h. The maximum uptake capacity of Cs{sup +} ions was estimated to be above 0.5 mmol/g for KCoFC-NM and KCoFC-CP composites. KCoFC-X composite had a relatively large uptake capacity of Cs{sup +} ions (0.23 mmol/g > 0.17 mmol/g (T-KCFC)) and this composite also had a selectivity towards Sr{sup 2+} ions; KCoFC-X is effective adsorbent for both Cs{sup +} and Sr{sup 2+} ions. The largest value of K{sub d,Sr} was estimated to be 218 cm{sup 3}/g for titanic acid-PAN. Titanic acid-PAN had the largest uptake rate of Sr{sup 2+} ions, and the uptake attained equilibrium within 8 h. Adsorbability of other nuclides was further examined by batch method. All adsorbents had adsorbability for Rb{sup +} and RuNO{sup 3+} ions. KCoFC-SG (NH), KCoFC-CP and T-KCFC had higher selectivity towards Cs{sup +} than other adsorbents; these adsorbents had adsorbability to Cs{sup +} ions even in the presence of Ba{sup 2+}, Ca{sup 2+} and Mg{sup 2+} ions. The separation factor of K{sub d,Sr}/K{sub d,Ba} for titanic acid-PAN was about 1, indicating that the K{sub d,Sr} for titanic acid-PAN tends to decrease with Ba{sup 2+} concentration. As for the breakthrough properties, the largest 5 % breakpoint and 5 % breakthrough capacity of Cs{sup +} ions were estimated to be 47.1 cm{sup 3} and 0.07 mmol/g for the column of KCoFC-SG (NH), respectively. The order of 5 % breakthrough capacity of Cs{sup +} is as follows; KCoFC-SG (NH) > KCoFC-NM > KCoFC-SG (Q-10) > T-KCFC > KCoFC-X > KCoFC-CP. From the results of batch and column experiments, the composite adsorbent of KCoFC-SG (NH) was effective for the uptake of Cs{sup +} ions, and KCoFC-X composite was useful for the uptake of both Cs{sup +} and Sr{sup 2+} ions. The estimation of irradiation stability and the uptake properties using the actual wastes are further essential for the practical operation. (authors)

Susa, Shunsuke; Mimura, Hitoshi [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aza-Aoba 6-6-01-2, Sendai, 980-8579 (Japan)] [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University, Aramaki-Aza-Aoba 6-6-01-2, Sendai, 980-8579 (Japan); Ito, Yoshiyuki; Saito, Yasuo [Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, 2-4 Shirakata Shirone, Naka-gun, Ibaraki, 319-1195 (Japan)] [Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, 2-4 Shirakata Shirone, Naka-gun, Ibaraki, 319-1195 (Japan)

2013-07-01T23:59:59.000Z

48

Ts&Cs FP  

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

0-09) Title: Standard Terms and Conditions for 0-09) Title: Standard Terms and Conditions for Firm-Fixed Price Contracts Owner: Procurement Policy & Quality Dept Initial Release Date: 10/22/09 Page 1 of 16 PPQD-TMPLT-008R00 Template Release Date: 06/12/09 Printed copies of this document are uncontrolled. Before using a printed copy to perform work, verify the version against the electronic document to ensure you are using the correct version. SANDIA CORPORATION SF 6432-FP (10-09) Section II STANDARD TERMS AND CONDITIONS FOR FIRM-FIXED PRICE CONTRACTS THE FOLLOWING CLAUSES APPLY TO THIS CONTRACT AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE COVER PAGE OR SECTION I. FP01 - ACCEPTANCE OF TERMS AND CONDITIONS (Ts&Cs) Contractor, by

49

ARM STM Plenary: CS Report  

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

8 8 ARM Science Team Meeting 2008 Warren Wiscombe ARM Chief Scientist Brookhaven National Lab Mar 2008 ARM Plenary 2 ARM Chief Scientist Team ARM Chief Scientist Team Ric Cederwall Andy Vogelmann Sharon Zuhoski Yangang Liu Pavlos Kollias Mar 2008 ARM Plenary 3 Submit your... Submit your... science highlights (www.arm.gov) poster PDFs (esp if you win CS Design Award) feedback in text boxes on ARM web pages Also... vote for People's Choice Poster talk to our Thu morning speakers Mar 2008 ARM Plenary 4 Mar 2008 ARM Plenary 5 Existing Existing * CLOWD (Clouds with Low Optical Depth) * BBHRP (BroadBand Heating Rate Profile) * Radar Focus Groups Focus Groups New New * Vertical Velocity for Climate Modelers * Longwave/Microwave * Surface Fluxes Mar 2008 ARM Plenary 6 ARM ARM ' ' s s two fundamental science questions

50

CS348 Project 1 Oracle Project  

E-Print Network [OSTI]

CS348 Project 1 Oracle Project Due Date: 2/12/2009 You are going to use Oracle to design a simple; if nothing else, mark each query with its number. Turnin You may turn in the project for grading using the procedure described below. Run the following shell command (see 'man turnin' for details): turnin -c cs348

Elmagarmid, Ahmed K.

51

Levels of Rb93, Sr93, and Y93 fed in the decays of Kr93, Rb93, and Sr93  

Science Journals Connector (OSTI)

The ? rays and conversion electrons following the ?- decay of Kr93, Rb93, and Sr93 have been measured by applying on-line mass-separation techniques to U235 fission products. Level schemes for the three daughter nuclei are proposed based on the study of ?-singles, ??-coincidence, and internal-conversion electron spectra. Internal-conversion coefficients were determined for 10 transitions and the deduced multipolarities as well as logft values were combined with known reaction results to assign spins and parities. The half-life for the 758.63-KeV isomeric level in Y93 was measured to be 85 ± 15 msec.RADIOACTIVITY Kr93, Rb93, Sr93; measured E?, I?, ?? coin, ICC; deduced logft, ?. Ym93; measured T12. Rb93, Sr93, Y93; deduced levels, J, ?. On-line measurement, mass-separated U235 fission products.

E. Achterberg; F. C. Iglesias; A. E. Jech; J. A. Moragues; D. Otero; M. L. Pérez; A. N. Proto; J. J. Rossi; W. Scheuer

1974-12-01T23:59:59.000Z

52

Genetic analyses of the Rb and p53 genes in murine development and tumorigenesis  

E-Print Network [OSTI]

The RB and p53 genes play central roles in cell cycle and checkpoint control, apoptosis and many other biological processes. These are central tumor suppressor genes that are each inactivated in many human cancers. Mouse ...

MacPherson, David (David P.)

2005-01-01T23:59:59.000Z

53

Analytical study of optical pumping for the D1 line of 85Rb atoms  

Science Journals Connector (OSTI)

We present analytical solutions for the populations of the D1 transition line of 85Rb atoms. The time evolution of the populations of the magnetic sublevels in the excited state at the weak intensity limit exhibi...

Heung-Ryoul Noh

2014-06-01T23:59:59.000Z

54

Electronic structure of the Ge/RbF/GaAs(100) heterostructure: LCAO calculations  

Science Journals Connector (OSTI)

The electronic structure of Ge/RbF/GaAs(100) system ... known however about their reactivity. In these calculations the reactive contacts were postulated and modelled. ... obtained results, compared with those of...

Barbara Stankiewicz

55

Magnetic Properties of RB66 (R = Gd, Tb, Ho, Er, and Lu)  

SciTech Connect (OSTI)

We report magnetic susceptibility measurements of RB66 (R = Gd, Tb, Ho, Er, and Lu) boron-rich rare earth containing borides down to 50 mK. The data suggest a spin glass low temperature state for RB66 (R = Gd, Tb, Ho, and Er) with the freezing temperatures below 1 K. The magnetic properties appear to be influenced by the anisotropy of the magnetic moments, probably via the crystalline electric field effects.

Kim, Hyunsoo; Budko, Serguei; ATanatar, Makariy; Avdashchenko, D.V.; Matovnikov, A.V.; Mitroshenkov, N.V.; Novikov, V.V.; Prozorov, Ruslan

2012-05-17T23:59:59.000Z

56

The tumor suppressor Rb and its related Rbl2 genes are regulated by Utx histone demethylase  

SciTech Connect (OSTI)

Research highlights: {yields} Utx increases expression of Rb and Rbl2 genes through its demethylase activity. {yields} Utx changes histone H3 methylation on the Rb and Rbl2 promoters. {yields} Utx induces decreased cell proliferation of mammalian primary cells. -- Abstract: Utx is a candidate tumor suppressor gene that encodes histone H3 lysine 27 (H3K27) demethylase. In this study, we found that ectopic expression of Utx enhanced the expression of retinoblastoma tumor suppressor gene Rb and its related gene Rbl2. This activation was dependent on the demethylase activity of Utx, and was suggested to contribute to the decreased cell proliferation induced by Utx. A chromatin immunoprecipitation assay showed that over-expressed Utx was associated with the promoter regions of Rb and Rbl2 resulting in the removal of repressive H3K27 tri-methylation and the increase in active H3K4 tri-methylation. Furthermore, siRNA-mediated knockdown of Utx revealed the recruitment of endogenous Utx protein on the promoters of Rb and Rbl2 genes. These results indicate that Rb and Rbl2 are downstream target genes of Utx and may play important roles in Utx-mediated cell growth control.

Terashima, Minoru; Ishimura, Akihiko; Yoshida, Masakazu [Division of Functional Genomics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Ishikawa (Japan)] [Division of Functional Genomics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Ishikawa (Japan); Suzuki, Yutaka; Sugano, Sumio [Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Chiba (Japan)] [Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561, Chiba (Japan); Suzuki, Takeshi, E-mail: suzuki-t@staff.kanazawa-u.ac.jp [Division of Functional Genomics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Ishikawa (Japan)] [Division of Functional Genomics, Cancer Research Institute, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Ishikawa (Japan)

2010-08-20T23:59:59.000Z

57

Proposed BS in CS, Option IV, 2008-2010 Catalog Proposed MS in CS, 2009-2011 Catalog  

E-Print Network [OSTI]

RESEARCH/ GENERAL CULTURE (3) CS 336 CS 337 INTERNSHIP FOR LANG (3-5) EE 316 M 340L FOR LANG (3-5) Lab Sci

Julien, Christine

58

Nanocrystalline SiC and Ti3SiC2 Alloys for Reactor Materials: Diffusion of Fission Product Surrogates  

SciTech Connect (OSTI)

MAX phases, such as titanium silicon carbide (Ti3SiC2), have a unique combination of both metallic and ceramic properties, which make them attractive for potential nuclear applications. Ti3SiC2 has been suggested in the literature as a possible fuel cladding material. Prior to the application, it is necessary to investigate diffusivities of fission products in the ternary compound at elevated temperatures. This study attempts to obtain relevant data and make an initial assessment for Ti3SiC2. Ion implantation was used to introduce fission product surrogates (Ag and Cs) and a noble metal (Au) in Ti3SiC2, SiC, and a dual-phase nanocomposite of Ti3SiC2/SiC synthesized at PNNL. Thermal annealing and in-situ Rutherford backscattering spectrometry (RBS) were employed to study the diffusivity of the various implanted species in the materials. In-situ RBS study of Ti3SiC2 implanted with Au ions at various temperatures was also performed. The experimental results indicate that the implanted Ag in SiC is immobile up to the highest temperature (1273 K) applied in this study; in contrast, significant out-diffusion of both Ag and Au in MAX phase Ti3SiC2 occurs during ion implantation at 873 K. Cs in Ti3SiC2 is found to diffuse during post-irradiation annealing at 973 K, and noticeable Cs release from the sample is observed. This study may suggest caution in using Ti3SiC2 as a fuel cladding material for advanced nuclear reactors operating at very high temperatures. Further studies of the related materials are recommended.

Henager, Charles H.; Jiang, Weilin

2014-11-01T23:59:59.000Z

59

Search Engine Technologies CS 5319, Spring 2007  

E-Print Network [OSTI]

Search Engine Technologies CS 5319, Spring 2007 Nigel Ward Sample Project Ideas 1. I would like in the guest department similar to the target person, ranked by similarity. 2. The Dean would like an intranet

Ward, Nigel

60

On the possibility for Rb- and Eu-cation ordering in type-I clathrates: synthesis and homogeneity range of the novel compounds Rb8-xEux(In,Ge)46 (0.6 x 1.8)  

Science Journals Connector (OSTI)

Clathrates with the type-I structure are reported in the quaternary Rb-Eu-In-Ge system. Possible cation ordering is suggested.

Sch?fer, M.C.

2013-11-13T23:59:59.000Z

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


61

Fast CsI-phoswich detector  

DOE Patents [OSTI]

An improved phoswich radiation detector used pure CsI crystal and a fast plastic scintillator and a single photomultiplier tube. The plastic is arranged to receive incident radiation, and that which passed through then strikes the CsI crystal. Scintillation light from both the plastic and CsI crystal are applied to the photomultiplier tube, with the light from the plastic passing through the crystal without absorption therein. Electronics are provided for analyzing the output of the photomultiplier tube to discriminate responses due to the plastic and the CsI crystal, through short gate and long gate integration, to produce results which are indicative of the characteristics of the different types of incident radiation, even in the presence of large amounts of radiation. The phoswich detector has excellent timing resolution. The scintillators of the CsI- phoswich were chosen for their fast risetimes, of about 3 ns for NE102A, and 30 ns for the pure CsI. 5 figs.

Langenbrunner, J.R.

1996-05-07T23:59:59.000Z

62

Fast CsI-phoswich detector  

DOE Patents [OSTI]

An improved phoswich radiation detector used pure CsI crystal and a fast plastic scintillator and a single photomultiplier tube. The plastic is arranged to receive incident radiation, and that which passed through then strikes the CsI crystal. Scintillation light from both the plastic and CsI crystal are applied to the photomultiplier tube, with the light from the plastic passing through the crystal without absorption therein. Electronics are provided for analyzing the output of the photomultiplier tube to discriminate responses due to the plastic and the CsI crystal, through short gate and long gate integration, to produce results which are indicative of the characteristics of the different types of incident radiation, even in the presence of large amounts of radiation. The phoswich detector has excellent timing resolution. The scintillators of the CsI- phoswich were chosen for their fast risetimes, of about 3 ns for NE102A, and 30 ns for the pure CsI.

Langenbrunner, James R. (1024 Osage Cir., Santa Fe, NM 87501)

1996-01-01T23:59:59.000Z

63

Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb PET  

Office of Science (SC) Website

Precise Measurement of Strontium-82 Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb PET Generator Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Precise Measurement of Strontium-82 Radioactivity in the Sr-Rb PET Generator Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Precise measurement of 82Sr radioactivity in the Sr-Rb PET generatorm

64

CrRb: A molecule with large magnetic and electric dipole moments  

SciTech Connect (OSTI)

We report calculations of Born-Oppenheimer potential energy curves of the chromium-rubidium heteronuclear molecule ({sup 52}Cr{sup 87}Rb), and the long-range dispersion coefficient for the interaction between ground state Cr and Rb atoms. Our calculated van der Waals coefficient (C{sub 6}=1770 a.u.) has an expected error of 3%. The ground state {sup 6{Sigma}+} molecule at its equilibrium separation has a permanent electric dipole moment of d{sub e}(R{sub e}=3.34Angstrom)=2.90 D. We investigate the hyperfine and dipolar collisions between trapped Cr and Rb atoms, finding elastic to inelastic cross section ratio of 10{sup 2}-10{sup 3}.

Pavlovic, Z. [ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States); Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States); Sadeghpour, H. R. [ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States); Cote, R. [Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States); Roos, B. O. [Department of Theoretical Chemistry, University of Lund, S-221 00 Lund (Sweden)

2010-05-15T23:59:59.000Z

65

Thermal expansion and lattice dynamics of RB66 compounds at low temperatures  

SciTech Connect (OSTI)

Thermal characteristics of the phonon and magnon subsystems of icosahedral borides RB66 (R = Gd, Tb, Dy, Ho, Eu, or Lu) have been studied based on the obtained experimental data on the thermal expansion of the borides and the earlier results on their heat capacity in the range of 2–300 K. The contribution to the expansion of borides containing paramagnetic R 3+ ions, which is characteristic of transition to the spin-glass state, has been revealed. The phonon spectrum moments of RB66 compounds and the Grüneisen parameters have been calculated.

Novikov, V V [Petrovsky Bryansk State University; Avdashchenko, D V [Petrovsky Bryansk State University; Mitroshenkov, N V [Petrovsky Bryansk State University; Matovnikov, A V [Petrovsky Bryansk State University; Budko, Serguei L [Ames Laboratory

2014-10-01T23:59:59.000Z

66

Spatial separation in a thermal mixture of ultracold Yb174 and Rb87 atoms  

Science Journals Connector (OSTI)

We report on the observation of unusually strong interactions in a thermal mixture of ultracold atoms which cause a significant modification of the spatial distribution. A mixture of Rb87 and Yb174 with a temperature of a few ?K is prepared in a hybrid trap consisting of a bichromatic optical potential superimposed on a magnetic trap. For suitable trap parameters and temperatures, a spatial separation of the two species is observed. We infer that the separation is driven by a large interaction strength between Yb174 and Rb87 accompanied by a large three-body recombination rate. Based on this assumption we have developed a diffusion model which reproduces our observations.

F. Baumer; F. Münchow; A. Görlitz; S. E. Maxwell; P. S. Julienne; E. Tiesinga

2011-04-21T23:59:59.000Z

67

Cs-137: a tool for quantifying soil erosion  

E-Print Network [OSTI]

. It is important to note the differences in Cs-137 concentration of cultivated and noncultivated soil when studying the behavior of Cs-137 in the watershed systems because redistribution of Cs-137 is influenced by depth of mixing (Ritchie and McHenry, 1973... (Keppel, 1969). Cs-137 is also returned to the soil in the form of animal manure (Ncgenry and Ritchie, 1977). The effect of animals and vegetation on the redistribution of Cs-137 in the soil introduces some error in the use of Cs-137 to estimate erosion...

Lavelle, Adrienne Renee

1983-01-01T23:59:59.000Z

68

The environmental impact of recombinant bovine somatotropin (rbST) use in dairy production  

Science Journals Connector (OSTI)

...Audsley E Sandars DL ( 2006 ) DEFRA Research Project ISO205 , Determining the Environmental Burdens and...supported in part by funding provided by the Liberty Hyde Bailey Professorship in College...Monsanto, holding the position of Technical Project Manager for POSILAC rbST with the primary...

Judith L. Capper; Euridice Castańeda-Gutiérrez; Roger A. Cady; Dale E. Bauman

2008-01-01T23:59:59.000Z

69

Mean-field analysis of the stability of a K-Rb Fermi-Bose mixture  

Science Journals Connector (OSTI)

We compare the experimental stability diagram of a Fermi-Bose mixture of 40K and 87Rb atoms with attractive interaction to the predictions of a mean-field theoretical model. We discuss how this comparison can be used to give a better estimate of the interspecies scattering length, which is currently known from collisional measurements with larger uncertainty.

M. Modugno; F. Ferlaino; F. Riboli; G. Roati; G. Modugno; M. Inguscio

2003-10-29T23:59:59.000Z

70

NPS-CS-06-007 POSTGRADUATE  

E-Print Network [OSTI]

- To) 4. TITLE AND SUBTITLE 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 5d. PROJECT-CS-06-007 Office of Naval Research One Liberty Center 875 North Randolph Street, Suite 1425 Arlington Systems Security Studies and Research (CISR) is working on a project known as the Trusted Computing

71

CS2223, Project 1 Intro to Lua  

E-Print Network [OSTI]

CS2223, Project 1 Intro to Lua: Measuring and Counting Sorting Behaviors Due midnight, Monday, 5 executing the file contents. Project goals. The goals of this homework are for you to familiarize yourself a copy of an array so that the original will not be lost when procedures modify the copy. print array

Guttman, Joshua

72

CS486 Course Syllabus Winter 2012  

E-Print Network [OSTI]

and intractable computations. b) Prerequisites: CS386 Introduction to Automata Theory. c) This course is elective the concept of NP-completeness and its importance in the P vs NP question. Brief list of topics to be covered. Polynomial time many-one reductions. Cook's Theorem. NP-completeness and the P vs NP question. Laboratory

Crespi, Valentino

73

Spring 2006 CS 649 1 Sensor Networks  

E-Print Network [OSTI]

density deployment · Energy constraints · Power usage · Classification of algorithms · Examples >> sensor range) #12;Energy Constraints Spring 2006 CS 649 4 · Not always possible to do additional deployment (e.g. emergency services). · Untethered operation due to lack of infrastructure precludes the use

Amir, Yair

74

DIFFUSION OF Na AND Cs IN MONTMORILLONITE  

Science Journals Connector (OSTI)

...isothermal-isobaric Monte Carlo simulations (NPT-ensemble) at a temperature of 298 K and a pressure...the Cs ions in smectite are in a more disordered environment in expanded layers (i...simulations) potential functions for proteins, energy minimizations for crystals of...

Georg Kosakowski; Sergey V. Churakov; Tres Thoenen

75

CS252/Patterson Graduate Computer Architecture  

E-Print Network [OSTI]

? 1.0 inch form factor in long term? · Tapes ­ No investment, must be backwards compatible: Goal was performance, popularity due to reliability of storage · Disk Mirroring, Shadowing (RAID 1 0 0 1 1 1 0 0 1 0 0 1 1 CS252/Patterson Lec 6.4 2/2/01 Outline · Reliability Terminology · Examlpes

California at Berkeley, University of

76

Marine Ecosystems Acous&cs Program  

E-Print Network [OSTI]

hydrophone deployments · Ishmael & Seas: In-house bio- and geo-acous@c analysis so\\ware (online free-ware) Technology Transfer to Opera&ons · Passive acous@c recording module are acous@cally oriented Why is passive acous&cs ideal for ocean monitoring

77

Field Testing of Suction Caissons at Bothkennar and Luce Bay G.T. Houlsby, R.B. Kelly, J. Huxtable and B.W. Byrne  

E-Print Network [OSTI]

Field Testing of Suction Caissons at Bothkennar and Luce Bay by G.T. Houlsby, R.B. Kelly, J.T. Houlsby, R.B. Kelly, J. Huxtable and B.W. Byrne This report consists of three papers that have resulted.T., Kelly, R.B., Huxtable, J. and Byrne, B.W. Abstract: A programme of testing of caisson foundations

Byrne, Byron

78

Study of Rb atomic transitions D1,2 lines in strong magnetic field based on fluorescence spectra of sub -micron thin cell  

E-Print Network [OSTI]

Study of Rb atomic transitions D1,2 lines in strong magnetic field based on fluorescence spectra "forbidden" transitions in magnetic field B are detected and studied. Also, on 87 Rb D1 line, Fg = 1, mF = 0 the levels of the hyperfine structure of the D1,2 lines of 87 Rb atoms in magnetic fields with B varying

Boyer, Edmond

79

Year First name Surname Mentor CS1 Mark Askew Jenny Coady  

E-Print Network [OSTI]

Jamie Gabbay CS2 Ugis Laimins Jenny Coady CS2 Michael Laing Peter King CS2 Gordon MacDougall Jenny Coady

Painter, Kevin

80

CS Wind Tech Co Ltd | Open Energy Information  

Open Energy Info (EERE)

CS Wind Tech Co Ltd CS Wind Tech Co Ltd Jump to: navigation, search Name CS Wind Tech Co Ltd Place Lianyungang, China Zip 222049 Sector Wind energy Product China-based wind turbine tower maker, a subsidiary of Korea's CS Corporation. References CS Wind Tech Co Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. CS Wind Tech Co Ltd is a company located in Lianyungang, China . References ↑ "CS Wind Tech Co Ltd" Retrieved from "http://en.openei.org/w/index.php?title=CS_Wind_Tech_Co_Ltd&oldid=343989" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load)

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


81

stanford hci group / cs376 http://cs376.stanford.eduScott Klemmer 19 October 2006  

E-Print Network [OSTI]

1 stanford hci group / cs376 http://cs376.stanford.eduScott Klemmer · 19 October 2006 Distributed with Ed Hutchins in the spring of 05... #12;3 Integration of Thinking and Doing Clearboard's tech

Klemmer, Scott

82

Sympathetic cooling of the Ba{sup +} ion by collisions with ultracold Rb atoms: Theoretical prospects  

SciTech Connect (OSTI)

State-of-the-art ab initio techniques have been applied to compute the potential energy curves of the (BaRb){sup +} molecular ion in the Born-Oppenheimer approximation for the singlet and triplet states dissociating into the ground-state {sup 1}S Rb{sup +} ion and the Ba atom in the ground {sup 1}S state or the lowest singlet or triplet d excited states, and for the singlet and triplet states dissociating into the ground-state {sup 2}S Rb atom and the ground-state {sup 2}S Ba{sup +} ion. The ground-state potential energy was obtained with the coupled-cluster method restricted to single, double, and nonperturbative triple excitations. The first triplet states in the {Sigma}, {Pi}, and {Delta} symmetries were computed with the restricted open-shell coupled-cluster method restricted to single, double, and nonperturbative triple excitations. All other excited-state potential energy curves were computed using the equation of motion approach within the coupled-cluster singles, doubles, and linear triples framework. The long-range coefficients describing the electrostatic, induction, and dispersion interactions at large interatomic distances are also reported. The electric transition dipole moments governing the x {sup 1{Sigma}{yields}1{Sigma}},{sup 1{Pi}} transitions have been obtained as the first residue of the polarization propagator computed with the linear response coupled-cluster method restricted to single and double excitations. Nonadiabatic radial and angular coupling matrix elements as well as the spin-orbit coupling matrix elements have been evaluated using the multireference configuration-interaction method restricted to single and double excitations with a large active space. With these couplings, the spin-orbit-coupled (relativistic) potential energy curves for the 0{sup +} and 1 states relevant for the running experiments have been obtained. Finally, relativistic transition moments and nonadiabatic coupling matrix elements were obtained from the nonrelativistic results and spin-orbit eigenvectors. The electronic structure input has been employed in the single-channel scattering calculations of the collisional cross sections between the Ba{sup +} ion and Rb atom. Both nonrelativistic and relativistic potentials were used in these calculations. Our results show that the inelastic cross section corresponding to the charge transfer from the Rb atom to the Ba{sup +} ion is much smaller than the elastic one over a wide range of energies up to 1 mK. This suggests that sympathetic cooling of the Ba{sup +} ion by collisions with ultracold Rb atoms should be possible.

Krych, Michal; Skomorowski, Wojciech; Pawlowski, Filip; Moszynski, Robert; Idziaszek, Zbigniew [Institute of Theoretical Physics, Department of Physics, University of Warsaw, Hoza 69, 00-681 Warsaw (Poland) and Quantum Chemistry Laboratory, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw (Poland); Quantum Chemistry Laboratory, Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw (Poland); Institute of Theoretical Physics, Department of Physics, University of Warsaw, Hoza 69, 00-681 Warsaw (Poland) and Institut de Physique de Rennes, UMR 6251 du CNRS and Universite de Rennes I, F-35042 Rennes Cedex (France)

2011-03-15T23:59:59.000Z

83

Simulations of phase transitions in Rb2ZnCl4  

Science Journals Connector (OSTI)

Structural relaxations, molecular-dynamics simulations, and lattice-dynamics calculations were performed to study the phase transitions in Rb2ZnCl4, using intermolecular and intramolecular potentials generated from ab initio quantum-chemistry calculations for the whole molecular ion ZnCl42-. Compared with an earlier treatment of the system by a polarizable-ion model, the present approach emphasizes the static effect of the electron covalency within the molecular ions that affects strongly both the intermolecular and intramolecular interactions. The calculations gave a close agreement with experiment on the static structures of the Pnam and the Pna21 phases and the transition temperature from the former to the latter. For the lower-temperature, monoclinic phase of Rb2ZnCl4, the detailed structure of which is unknown, our simulations predict a structure with C1c1 space-group symmetry, which doubles the Pna21 structure along both the b and c axes and thus has 48 formula units per unit cell. The lattice-dynamics calculations for the Pna21 structure clearly revealed the lattice instability responsible for the Pna21-monoclinic transition and provided a more convincing explanation of a previous Raman measurement. We have shown that the potential-energy surface in Rb2ZnCl4 pertinent to the phase transitions contains a double-well structure, very similar to that of K2SeO4, except that the double well is much deeper, causing the much more severe disordering in the Pnam structure of Rb2ZnCl4 observed experimentally.

H. M. Lu and J. R. Hardy

1992-04-01T23:59:59.000Z

84

Magnetism in orbitally unquenched chainar compounds. II. The ferromagnetic case: RbFeCl3  

Science Journals Connector (OSTI)

Measurements of quadrupole splitting by the Mössbauer effect and of single-crystal magnetic susceptibility are reported for the ferromagnetic chainar crystal RbFeCl3. By use of crystal-field theory and the correlated-effective-field statistical approximation these results are analyzed in terms of a model with only three adjustable parameters, a spin-orbit coupling constant, a trigonal crystal-field parameter, and an intrachain Heisenberg exchange J between real spins. A quantitative analysis paralleling that used in a previous paper for isomorphic RbFeBr3 is less successful in the present case, discrepancies arising at low temperatures which are at least partly due to small interchain exchange. The latter, which for RbFeCl3 perturbs a quasiferro magnetic system in an antiferro magnetic fashion, produces qualitative effects on magnetic response at sufficiently low temperatures. In addition, we suggest possible evidence for the importance of a non-Heisenberg contribution to exchange, the form and origin of which are discussed.

M. Eibschütz; M. E. Lines; R. C. Sherwood

1975-06-01T23:59:59.000Z

85

Nuclear Quadrupole Interaction in CsF  

Science Journals Connector (OSTI)

The electric resonance method of molecular beam spectroscopy has been used under high resolution conditions to study the rotational Stark spectrum of CsF for a single rotational state of the molecule, J=1. In this method polar molecules in a single rotational state and a particular state of space quantization are selected from a molecular beam by means of inhomogeneous electric fields which give the desired molecules a unique, sigmoid path in the apparatus. Changes in the beam intensity are observed when a change in the space quantization of the molecule is produced by an oscillating electric field transverse to a homogeneous, steady electric field. For weak electric fields the observed line widths agree well with the estimated uncertainty width of 10 kc/sec. At stronger fields inhomogeneities in the field cause a broadening of the lines. At sufficiently strong fields the spectrum for CsF contains several broad lines, each of which is due to transitions of molecules in a particular vibrational state. As the field strength is decreased the resolution improves and these lines reveal a complex fine structure, the principal features of which can be explained by the interaction of the electric quadrupole moment of the Cs nucleus, spin 7/2, with the molecular electrons and the F nucleus. The F nucleus, spin 1/2, has no quadrupole moment. A complete, quantitative explanation of the spectra requires the existence of a cosine type coupling between the nuclear spins and the molecular spin of the form cI·J, and a correction for the spin-spin interaction of the two nuclei. At weak fields a different type of spectrum appears, permitting an independent evaluation of the nuclear-molecular interactions. The data allows a determination of both the magnitude and sign of the interaction constants. The quadrupole interaction, defined by (e2q?Q2h), is (+0.310±0.002) mc/sec. The constants, ch, for the I·J interactions for F and Cs are, respectively, (+16±2) kc/sec and (0±1) kc/sec. The difference in the quadrupole interaction for the first two vibrational states is less than the experimental error; i.e., less than one percent. Application of the method to the measurement of various molecular constants is discussed briefly at the end of the paper.

J. W. Trischka

1948-10-01T23:59:59.000Z

86

Scattering of CsF by Electrons  

Science Journals Connector (OSTI)

Absolute differential and total cross sections for the scattering of CsF by 0.6- to 6.5- eV electrons have been measured using the molecular-beam recoil technique. The first-Born-approximation differential cross section is used as the theoretical model to fit the data. The experimental differential cross sections rise more sharply near 0° than predicted. Total cross sections derived from our measurements are a factor of 1.5 to 4 smaller than the first-approximation results.

Richard C. Slater; Michael G. Fickes; Richard C. Stern

1972-08-07T23:59:59.000Z

87

K2CsSb Cathode Development  

SciTech Connect (OSTI)

K{sub 2}CsSb is an attractive photocathode for high current applications. With a quantum efficiency of >4% at 532nm and >10% at 355nm, it is the only cathode to have demonstrated an average current of 35mA in an accelerator environment We describe ongoing cathode development work. for the energy recovery linac being constructed at BNL Several cathodes have been created on both copper and stainless steel substrates, and their spatial uniformity and spectral response have been characterized. Preliminary lifetime measurements have been performed at high average current densities (>1 mA/mm{sup 2}).

Smedley,J.; Rao, T.; Wang, E.

2008-10-01T23:59:59.000Z

88

Medium-spin structure of {sup 145}Cs  

SciTech Connect (OSTI)

Excited states in {sup 145}Cs, populated following the spontaneous fission of {sup 248}Cm, were studied by means of prompt-gamma spectroscopy, using the EUROGAM2 multidetector array. A new level scheme of {sup 145}Cs was proposed. We identified a decoupled band corresponding to 1/2[550] proton configuration and interpreted the ground-state band as a mixed configuration of 1/2[440] and 3/2[422] proton orbitals. Quasiparticle-rotor calculations performed for {sup 145}Cs support such assignments. The electric dipole moment in {sup 145}Cs, D{sub 0}=0.013(4) efm, is smaller than in lighter Cs isotopes, which suggests that octupole correlations in Cs isotopes decrease at the neutron number N=90, similarly as observed in the {sup 146}Ba and {sup 147}La isotones.

Rzaca-Urban, T. [Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00681 Warsaw (Poland); Urban, W. [Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00681 Warsaw (Poland); Institut Laue-Langevin, 6 rue J. Horowitz, F-38042 Grenoble (France); Pinston, J. A.; Simpson, G. S. [Laboratoire de Physique Subatomique et de Cosmologie, Universite Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, F-38026 Grenoble Cedex (France); Durell, J. L.; Smith, A. G. [Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Ahmad, I. [Argonne National Laboratory, Argonne, Illinois 60439 (United States)

2010-07-15T23:59:59.000Z

89

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

8 Brookfield Energy 8 Brookfield Energy Marketing LP Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-368 Brookfield Energy Marketing LP Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): Application from Brookfield Energy Marketing LP to export electric energy to CanadaA EA-368 Brookfield Energy Marketing LP More Documents & Publications Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): OE Docket EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-365 Centre Land Trading Limited

90

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

EA-365 Centre Land EA-365 Centre Land Trading Limited Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-365 Centre Land Trading Limited Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): Application from Centre Land Trading Limited to export electric energy to Canada EA- 365 Centre Land Trading Limited More Documents & Publications Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-367 EDF Trading North America, LLC (EDF) Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): OE Docket EA-364 Noble Americas Gas & Power Corporation

91

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

3 Noble Americas Gas 3 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-363 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): Noble Americas Gas & Power Corporation to export electric energy to Mexico EA-363 Noble Americas Gas & Power Corporation More Documents & Publications Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): OE Docket EA-364 Noble Americas Gas & Power Corporation EA-363 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity

92

Record of Categorical Exclusion (CS) Determination, Office of...  

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

of 2009 (Recovery Act) StateRegionalLocal Assistance for Interconnection Transmission Planning and Analysis More Documents & Publications Record of Categorical Exclusion (CS)...

93

Record of Categorical Exclusion (CS) Determination, Office of...  

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

3 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-363 Noble Americas Gas &...

94

Record of Categorical Exclusion (CS) Determination, Office of...  

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

OE Docket EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): OE Docket...

95

Record of Categorical Exclusion (CS) Determination, Office of...  

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

of Electricity Delivery and Energy Reliability (OE): OE Docket EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of...

96

Record of Categorical Exclusion (CS) Determination, Office of...  

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

8 Brookfield Energy Marketing LP Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-368 Brookfield Energy Marketing...

97

Record of Categorical Exclusion (CS) Determination, Office of...  

Energy Savers [EERE]

Framework (EISA 1305) Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of...

98

Record of Categorical Exclusion (CS) Determination, Office of...  

Energy Savers [EERE]

Program (EISA 1306) Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of...

99

E2F1 and p53 Are Dispensable, whereas p21Waf1/Cip1 Cooperates with Rb to Restrict Endoreduplication  

E-Print Network [OSTI]

E2F1 and p53 Are Dispensable, whereas p21Waf1/Cip1 Cooperates with Rb to Restrict Endoreduplication Rb and the cyclin-dependent kinase inhibitor p21Waf1/Cip1 . Although E2F1 and p53 mediate ectopic DNA of Rb and p21Waf1/Cip1 augments endoreduplication and apoptosis, whereas E2F1 and p53 are dispensable

Liang, Ping

100

Synthesis, single-crystal structure, and optical absorption of Rb{sub 2}Th{sub 7}Se{sub 15}  

SciTech Connect (OSTI)

The compound Rb{sub 2}Th{sub 7}Se{sub 15} has been synthesized by the solid-state reaction at 1273 K of Th, Rb{sub 2}Se{sub 3}, Se, and Ge, and its structure has been determined by single-crystal X-ray diffraction methods. Red crystals of Rb{sub 2}Th{sub 7}Se{sub 15} crystallize at 100(2) K with four formula units in a new structure type in the monoclinic space group C{sub 2h}{sup 5}?P2{sub 1}/c. The structure is three-dimensional and comprises Rb and Th atoms coordinated by Se atoms to form nine-, eight-, and seven-coordinate polyhedra. Infinite channels that contain Rb atoms are present. Crystals of Rb{sub 2}Th{sub 7}Se{sub 15} are red in color; an indirect band gap of 1.83 eV was derived from single-crystal optical measurements. - Graphical abstract: Structure of Rb{sub 2}Th{sub 7}Se{sub 15} viewed down the b-axis. Display Omitted - Highlights: • The new compound Rb{sub 2}Th{sub 7}Se{sub 15} was synthesized at 1273 K from the elements in the presence of Ge. • The structures of the two known Rb/Th/Se compounds, RbTh{sub 2}Se{sub 6} and Rb{sub 2}Th{sub 7}Se{sub 15}, differ markedly. • Optical measurements establish the band gap of Rb{sub 2}Th{sub 7}Se{sub 15} to be indirect with a value of 1.83 eV.

Koscielski, Lukasz A.; Pozzi, Eric A.; Van Duyne, Richard P.; Ibers, James A., E-mail: ibers@chem.northwestern.edu

2013-09-15T23:59:59.000Z

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


101

Fabrication of functionally graded TiC/Ti composites by Laser Engineered Net Shaping  

E-Print Network [OSTI]

engineered net shaping (LENS), with compositions changing from pure Ti to approximately 95 vol% TiC; Microstructure; TiC carbide 1. Introduction Functionally graded materials (FGMs) are a class of advanced

DuPont, John N.

102

Transition temperatures and vacancies in superconducting Rb{sub 3}C{sub 60}  

SciTech Connect (OSTI)

We have studied the role of alkali-metal vacancies in the structure and superconductivity in nominal Rb{sub 3}C{sub 60} through preparation of samples with different alkali-metal loadings and annealing temperatures, to search for the possible role of nonstoichiometry in superconductivity. We find sample-to-sample variations of {approx}1 K in the superconducting transition temperature, but this does not correlate with vacancy concentration. We conclude that a model of electronic structure of alkali-metal fullerenes based on proximity to a Mott-Hubbard transition at integer doping is not applicable.

Huq, Ashfia; Stephens, Peter W. [Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800 (United States)

2005-09-01T23:59:59.000Z

103

3d X 3d X SrTiO3Ti 2p 3d  

E-Print Network [OSTI]

XX 3d X 3d X X XX X XX SrTiO3Ti 2p 3d SrTiO3Ti 2p 3d 2p 2p SrTiO3 ts) 2p3/2 (t2g) 2p3/2 (e ) 2p1/2 (eg)2p SrTiO3 3d unit (t2g) (eg) (eg)2p1/2 (t2g)3d (Ti Fe Cu) arb. ( 2g) (Ti, Fe, Cu) y(ansitynten 3d In 3d 468464460456 · Photon Energy (e

Katsumoto, Shingo

104

Electronic structure and fundamental absorption edges of KPb2Br5, K0.5Rb0.5Pb2Br5, and RbPb2Br5 single crystals  

Science Journals Connector (OSTI)

X-ray photoelectron core-level and valence-band spectra for pristine and Ar+-ion irradiated (001) surfaces of KPb2Br5, K0.5Rb0.5Pb2Br5, and RbPb2Br5 single crystals grown by the Bridgman method have been measured and fundamental absorption edges of the ternary bromides have been recorded in the polarized light at 300 K and 80 K. The present X-ray photoelectron spectroscopy (XPS) results reveal high chemical stability of (001) surfaces of KxRb1?xPb2Br5 (x=0, 0.5, and 1.0) single crystals. Substitution of potassium for rubidium in KxRb1?xPb2Br5 does not cause any changes of binding energy values and shapes of the XPS constituent element core-level spectra. Measurements of the fundamental absorption edges indicate that band gap energy, Eg, increases by about 0.14 and 0.19 eV when temperature decreases from 300 K to 80 K in \\{KPb2Br5\\} and RbPb2Br5, respectively. Furthermore, there is no dependence of the Eg value for \\{KPb2Br5\\} upon the light polarization, whilst the band gap energy value for RbPb2Br5 is bigger by 0.03–0.05 eV in the case of E?c compared to those in the cases of E?a and E?b.

A.Yu. Tarasova; L.I. Isaenko; V.G. Kesler; V.M. Pashkov; A.P. Yelisseyev; N.M. Denysyuk; O.Yu. Khyzhun

2012-01-01T23:59:59.000Z

105

Declaring CS or CSE 1. Find an Advisor  

E-Print Network [OSTI]

Declaring CS or CSE 1. Find an Advisor Find a CS professor or lecturer who verbally agrees to be your advisor. See http://csmajor/FacultyList.php for a list of faculty members. You should meet with him or her in person, either in office hours or by appointment. Write your advisors name here. I have

Pratt, Vaughan

106

Mariya Zhivkova Zheleva http://www.cs.ucsb.edu/mariya/  

E-Print Network [OSTI]

Mariya Zhivkova Zheleva http://www.cs.ucsb.edu/mariya/ mariya@cs.ucsb.edu Education PhD, Department of Computer Science June 2014 (expected) University of California Santa Barbara, Santa Barbara, CA MEng Workshop in Computing (GSWC). Santa Barbara, CA, October, 2012. 1 #12; Posters and Videos ­ Mariya Zheleva

California at Santa Barbara, University of

107

Applicability of CS616 Soil Water Sensors for South  

E-Print Network [OSTI]

site water balance Image from: (Migliaccio 2007) #12;Background ­ Soil Water Sensors Time DomainApplicability of CS616 Soil Water Sensors for South Florida Urban Soils Kevin Koryto Water: Determine if CS616 soil water sensors are functioning adequately at field site. Hypothesis: Presence of air

Migliaccio, Kati White

108

Extreme ProgrammingCS4150-15 administrivia  

E-Print Network [OSTI]

Extreme ProgrammingCS4150-15 administrivia today assignment 3 due (last assignment!) extreme from original) project designs due 1 Tuesday, October 19, 2010 #12;Extreme ProgrammingCS4150-15 extreme programming extreme programming (XP) is a recent shift about the last decade plus part of agile development

Damon, Craig A.

109

NERSC/DOE FES Requirements Workshop Worksheet - CS Chang  

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

CS Chang CS Chang CS Chang FES Requirements Worksheet 1.1. Project Information - Center for Plasma Edge Simulation Document Prepared By CS Chang Project Title Center for Plasma Edge Simulation Principal Investigator CS Chang Participating Organizations New York University, ORNL, PPPL, LBNL, MIT, Columbia U., Rutgers U. Lehigh U., Georgia Tech, Auburn U., U. Colorado, U. California at Irvine, Caltech, Hinton Associates Funding Agencies DOE SC DOE NSA NSF NOAA NIH Other: 2. Project Summary & Scientific Objectives for the Next 5 Years Please give a brief description of your project - highlighting its computational aspect - and outline its scientific objectives for the next 3-5 years. Please list one or two specific goals you hope to reach in 5 years. Develop the XGC large scale edge kinetic codes further for higher fidelity

110

9. CS and discrete probability David Keil CS II 7/02 David Keil 1/03 1  

E-Print Network [OSTI]

probability) · Intuition: given some knowledge of an object, and some statistics about the population1 9. CS and discrete probability David Keil CS II 7/02 David Keil 1/03 1 Computer science and discrete probability · Probability space · Independent and dependent events · Conditional probability

Keil, David M.

111

A comparison of 137 Cs radioactivity in localized evergreen and deciduous plant species  

E-Print Network [OSTI]

and evergreen foliage at CPSES. Soil 117CS concentrations from each vegetation location were also compared to the foliage 137CS concentrations. The study's objective was to determine if the deciduous and evergreen vegetation 137CS concentrations...

Rangel, Ruben Canales

1996-01-01T23:59:59.000Z

112

Surface characterization and mechanical property of TiN/Ti-coated NiTi alloy by PIIID  

E-Print Network [OSTI]

significantly reduces the friction coefficient and improves wear resistance of the NiTi alloy. © 2006 Elsevier B prosthesis, heart valve replacement and biosensors [6,7]. TiN surface coating has also been found

Zheng, Yufeng

113

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

OE Docket EA-364 Noble OE Docket EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): OE Docket EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): Application from Noble Americas Gas & Power Corporation to export electric energy to Canada Application to Export Electric Energy OE Docket EA-364 Noble Americas Gas & Power Corporation More Documents & Publications EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-367 EDF Trading North America, LLC

114

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

Program Direction Program Direction Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of 2009 (Recovery Act) Program Direction Based on OE's review of the information concerning the proposal action, the NEPA compliance Officer has determined that the proposed action fits within the specified class of action, other regulatory requirements set forth are met, and proposed action is hereby categorically excluded from further NEPA review. Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of 2009 (Recovery Act) Program Direction More Documents & Publications Record of Categorical Exclusion (CS) Determination, Office of Electricity

115

Line narrowing of electromagnetically induced transparency in Rb with a longitudinal magnetic field  

Science Journals Connector (OSTI)

Electromagnetically induced transparency (EIT) experiments in ?-type systems benefit from the use of hot vapor where the thermal averaging results in reducing the width of the EIT resonance well below the natural linewidth. Here, we demonstrate a technique for further reducing the EIT width in room-temperature vapor by the application of a small longitudinal magnetic field. The Zeeman shift of the energy levels results in the formation of several shifted subsystems; the net effect is to create multiple EIT dips each of which is significantly narrower than the original resonance. We observe a reduction by a factor of 3 in the D2 line of Rb87 with a field of 3.2G.

S. M. Iftiquar and Vasant Natarajan

2009-01-12T23:59:59.000Z

116

Alkali-metal stoichiometry and structure of K4C60 and Rb4C60  

Science Journals Connector (OSTI)

Alkali-metal fulleride samples KxC60 and RbxC60 with stoichiometries close to x=4 were examined with x-ray powder-diffraction measurements at room temperature. We have shown through Rietveld refinements that A4C60 is a line phase with charge per lattice site that is closer to integer than in any other fulleride. The C60 molecules are disordered between two possible orientations within the body-centered-tetragonal lattice with the three orthogonal twofold rotation axes aligned with the unit-cell translation vectors in space group I4/mmm. The x-ray diffraction results exclude any quadrupole distortion of the fullerene molecule beyond about 0.04 ?. These results suggest that K4C60 and Rb4C60 may be Mott insulators.

Christine A. Kuntscher; Götz M. Bendele; Peter W. Stephens

1997-02-01T23:59:59.000Z

117

Determination of the 85 Rb ng-series quantum defect by electric-field-induced resonant energy  

E-Print Network [OSTI]

Determination of the 85 Rb ng-series quantum defect by electric-field-induced resonant energy of an electric field 1 . The resonant energy transfer process between Rydberg atoms is driven by the electric-series of potassium. The range of electric fields or "width" over which signifi- cant resonant energy transfer can

Le Roy, Robert J.

118

Characterization of TiN, TiC and TiCN coatings on Ti50.6 at.% Ni alloy deposited by PIII and deposition technique  

E-Print Network [OSTI]

high content of nickel [1]. In addition, its wear resistance is expected to be improved by transition-metal as nitride, carbide and carbonitride, respectively. Based on the electrochemical measurement and ion carbides and nitrides coatings at a rather broad composition range, such as TiN, TiC and TiC1-xNx (0bĂ?b1

Zheng, Yufeng

119

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

7 EDF Trading North 7 EDF Trading North America, LLC (EDF) Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-367 EDF Trading North America, LLC (EDF) Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): Application of EDF Trading North America, LLC (EDF) to export electric energy to Canada EA-367 EDF Trading North America, LLC (EDF) More Documents & Publications EA-367 EDF Trading North America, LLC Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): OE Docket EA-364 Noble Americas Gas & Power Corporation Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): EA-365 Centre Land Trading Limited

120

Introducing Concurrency in CS 1 Kim B. Bruce  

E-Print Network [OSTI]

Introducing Concurrency in CS 1 Kim B. Bruce Department of Computer Science Pomona College Computer Architecture Re- search", held in December of 2005, identified four grand chal- lenges. One

Danyluk, Andrea Pohoreckyj

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


121

ARIES-CS COIL STRUCTURE ADVANCED FABRICATION APPROACH  

E-Print Network [OSTI]

: ARIES-CS, advanced fabrication, additive manufacturing Note: Some figures in this paper are in color with conventional means would be very challenging and costly. A new fabrication technology is "additive manufac

California at San Diego, University of

122

The Transfer of Dissolved Cs-137 from Soil to Plants  

SciTech Connect (OSTI)

Rapidly maturing plants were grown simultaneously at the same experimental sites under natural conditions at the Chernobyl Exclusion Zone. Roots of the plants were side by side in the soil. During two seasons we selected samples of the plants and of the soils several times every season. Content of Cs-137 in the plant and in the soil solution extracted from the samples of soils was measured. Results of measurements of the samples show that, for the experimental site, Cs-137 content in the plant varies with date of the sample selection. The plant:soil solution Cs-137 concentration ratio depends strongly on the date of selection and also on the type of soil. After analysis of the data we conclude that Cs-137 plant uptake is approximately proportional to the content of dissolved Cs-137 in the soil per unit of volume, and the plant:soil solution Cs-137 concentration ratio for the soil is approximately proportional to the soil moisture. (authors)

Prorok, V.V.; Melnichenko, L.Yu. [Department of Physics, Taras Shevchenko National University of Kyiv, 2, build. 1 Acad. Glushkov prospect, Kyiv-680 MSP (Ukraine); Mason, C.F.V. [Research Applications Corporation, 148 Piedra Loop, Los Alamos, NM 87544 (United States); Ageyev, V.A.; Ostashko, V.V. [Institute for Nuclear Research, 47 Nauky prospect, Kyiv-680 MSP (Ukraine)

2006-07-01T23:59:59.000Z

123

CsCl Separation From a LiCl-CsCl Mixture by Using a Crystallization Approach  

SciTech Connect (OSTI)

Separation of CsCl and SrCl{sub 2} from LiCl was carried out by using a noble separation technology, the Czochralski crystallization method. It was experimentally confirmed that Cs as well as Sr could be simultaneously separated from a LiCl molten salt by the suggested crystallization process without any kind of additive or adsorption media. The concentrations of Cs and Sr in the LiCl were decreased from 1.53 wt% and 4.18 wt% in the initial salt to a minimum of 114 ppm and 135 ppm in the grown LiCl crystal respectively. The separation mechanism of Cs and Sr is described by the solubility difference of the solutes between the molten and the solid states. It is expected that the total amount of salt waste could be drastically decreased, because most of the LiCl could be recovered for recycling to the electroreduction process. (authors)

Jong-Hyeon, Lee; Gyu-Hwan, Oh; Han-Soo, Lee; Sung-Bin, Park; Yoon-Sang, Lee; In-Tae, Kim; Eung-Ho, Kim; Seong-Won, Park [Korea Atomic Energy Research Institute, Daejeon (Korea, Republic of)

2008-07-01T23:59:59.000Z

124

Identification of the slow E3 transition 136mCs -> 136Cs with conversion electrons  

E-Print Network [OSTI]

We performed at ISOLDE the spectroscopy of the decay of the 8- isomer in 136Cs by and conversion-electron detection. For the first time the excitation energy of the isomer and the multipolarity of its decay have been measured. The half-life of the isomeric state was remeasured to T1/2 = 17.5(2) s. This isomer decays via a very slow 518 keV E3 transition to the ground state. In addition to this, a much weaker decay branch via a 413 keV M4 and a subsequent 105 keV E2 transition has been found. Thus we have found a new level at 105 keV with spin 4+ between the isomeric and the ground state. The results are discussed in comparison to shell model calculations.

K. Wimmer; U. Koester; P. Hoff; Th. Kroell; R. Kruecken; R. Lutter; H. Mach; Th. Morgan; S. Sarkar; M. Saha Sarkar; W. Schwerdtfeger; P. C. Srivastava; P. G. Thirolf; P. Van Isacker

2011-06-30T23:59:59.000Z

125

Observation of TiH5 and TiH7 in Bulk-Phase TiH3 Gels for Kubas-Type Hydrogen Storage  

Science Journals Connector (OSTI)

Observation of TiH5 and TiH7 in Bulk-Phase TiH3 Gels for Kubas-Type Hydrogen Storage ... Table T2 provides the formulas and C, H, and Ti percentages of the hydrogenated materials in addition to those of representative stoichiometric compounds, including pure TiH3 and the starting material. ... In the TiH3 structure, the hydride ligands are a lightweight structural feature as opposed to a source of stored hydrogen, and additional hydrogen can bind via the Kubas interaction to access TiH5 and TiH7 species. ...

Tuan K. A. Hoang; Leah Morris; Daniel Reed; David Book; Michel L. Trudeau; David M. Antonelli

2013-11-14T23:59:59.000Z

126

Induction of Cytotoxicity by Photoexcited TiO2 Particles  

Science Journals Connector (OSTI)

...TiO2 in the suspension was measured with combustion analysis. The TiO2 aqueous suspension...photoexcited TiO2 particles. it did not produce heat at the irradiated site. Since TiO2 alone...Heterogeneous photocatalytic oxidation of hydrocarbons on platinized TiO2 powders. J. Phys...

Ruxiong Cai; Yoshinobu Kubota; Taro Shuin; Hideki Sakai; Kazuhito Hashimoto; and Akira Fujishima

1992-04-15T23:59:59.000Z

127

InDesign CS 5 -Posters Adobe InDesign CS 5 TM is a powerful desktop publishing program. In addition to creating  

E-Print Network [OSTI]

InDesign CS 5 - Posters Adobe InDesign CS 5 TM is a powerful desktop publishing program for composing posters. In this course you will learn the basics of creating posters with InDesign CS 5 . Planning the poster Check with event or conference staff for exact size specifications and what type

Aalberts, Daniel P.

128

PRODUCTIOR"OF TRORI~JW~IETALIWES PROCESS F6R RB)IJCIRO T&Old 2 ':  

Office of Legacy Management (LM)

PRODUCTIOR"OF TRORI~JW~IETALIWES PROCESS F6R RB)IJCIRO T&Old 2 ': PRODUCTIOR"OF TRORI~JW~IETALIWES PROCESS F6R RB)IJCIRO T&Old 2 ': am wm ..,. :I.::. ? ; \: :.:, .,, : ,. / 1. ..ri:,:,.:, :/ I 8yblBOLa PPaJPT i: >. ,,;.;~:,,; ,;.. !,., ,ip; ,,,:. ;., -. , ^ , . . 3 '>) ! .,:<;:,,..,. ; : :..,, ,,.+ -../ ,:,; I,:;?: ..: : ,, ,,: ; !. (' '; ::, Durine,~~~v%eit'to Amae &8Htate~Coliegd on Mar6h 4 and 2 to dl&ni& prinalpally~~asl~~prd~ess~~~1 also r&&&d wltlvDii 8. Wilhelm and Dr. D. Peterson of An~?e Iowa State College their ?xperimantal work on%hC14yt~ep,yp6n,,~ 'iti eotl,m ~th.~gxtssiun t6 tborlum metal.- ;:'..?a: :. ( : ; ;2,& : '. .' ; '; :: !,%. :: '.. , 2. * BumDary. y2, ,, vii,:;,. ,:,, r: '.,;.','. ,;I ,' .,._..I :, . .._., 7::: 1 ::.! "j:. *.,,: ,,,, ::':?;.: :,,;,

129

Spectroscopy of triplet states of Rb{sub 2} by femtosecond pump-probe photoionization of doped helium nanodroplets  

SciTech Connect (OSTI)

The dynamics of vibrational wave packets in triplet states of rubidium dimers (Rb{sub 2}) formed on helium nanodroplets are studied using femtosecond pump-probe photoionization spectroscopy. Due to fast desorption of the excited Rb{sub 2} molecules off the droplets and due to their low internal temperature, wave-packet oscillations can be followed up to very long pump-probe delay times > or approx. 1.5 ns. In the first-excited triplet state (1){sup 3}{sigma}{sub g}{sup +}, full and fractional revivals are observed with high contrast. Fourier analysis provides high-resolution vibrational spectra which are in excellent agreement with ab initio calculations.

Mudrich, M.; Heister, Ph.; Hippler, T.; Giese, Ch.; Stienkemeier, F. [Physikalisches Institut, Universitaet Freiburg, 79104 Freiburg (Germany); Dulieu, O. [Laboratoire Aime Cotton, CNRS, Universite Paris-Sud, Batiment 505, 91405 Orsay (France)

2009-10-15T23:59:59.000Z

130

Spectroscopy and applications of the 3?{sup 3}?{sup +} electronic state of {sup 39}K{sup 85}Rb  

SciTech Connect (OSTI)

We report new results on the spectroscopy of the 3?{sup 3}?{sup +} electronic state of {sup 39}K{sup 85}Rb. The observations are based on resonance-enhanced multiphoton ionization of ultracold KRb molecules starting in vibrational levels v?? = 18–23 of the a?{sup 3}?{sup +} state and ionized via the intermediate 3?{sup 3}?{sup +} state. The a-state ultracold molecules are formed by photoassociation of ultracold {sup 39}K and {sup 85}Rb atoms to the 3(0{sup +}) state of KRb followed by spontaneous emission. We discuss the potential applications of this state to future experiments, as a pathway for populating the lowest vibrational levels of the a state as well as the X state.

Banerjee, Jayita, E-mail: jayitarm@gmail.com; Rahmlow, David; Carollo, Ryan; Bellos, Michael; Eyler, Edward E.; Gould, Phillip L.; Stwalley, William C. [Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States)] [Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046 (United States)

2013-11-07T23:59:59.000Z

131

Neutron scattering studies of spin excitations in superconducting Rb0.82Fe1.68Se2  

SciTech Connect (OSTI)

We use inelastic neutron scattering to show that superconducting (SC) rubidium iron selenide Rb0.82Fe1.68Se2 exhibits antiferromagnetic (AF) spin excitations near the in-plane wave vector Q = ( ,0) identical to that for iron arsenide superconductors. Moreover, we find that these excitations change from incommensurate to commensurate with increasing energy and occur at the expense of spin waves associated with the coexisting 5 5 block AF phase. Since these spin excitations cannot come from Fermi surface nesting based on angle resolved photoemission experiments, our results indicate the presence of local moments in SC Rb0.82Fe1.68Se2 that may have a similar origin as the hourglass-like spin excitations in copper oxide superconductors.

Wang, Miaoyin [University of Tennessee, Knoxville (UTK); Li, Chunhong [The Institute of Physics, Chinese Academy of Sciences; Abernathy, Douglas L [ORNL; Song, Yu [University of Tennessee, Knoxville (UTK); Carr, Scott V. [University of Tennessee, Knoxville (UTK); Lu, Xiangye [The Institute of Physics, Chinese Academy of Sciences; Li, Shiliang [The Institute of Physics, Chinese Academy of Sciences; Yamari, Zahra [Canadian Neutron Beam Centre, National Research Council, Chalk River Laboratorie; Hu, Jiangping [Purdue University and Chinese Academy of Sciences; Xiang, Tao [The Institute of Physics, Chinese Academy of Sciences; Dai, Pengcheng [University of Tennessee, Knoxville (UTK)

2012-01-01T23:59:59.000Z

132

On the Evaluation of Snippet Selection for WebCLEF A. Overwijk, D. Nguyen, C. Hauff, R.B. Trieschnigg, D. Hiemstra, F.M.G. de Jong  

E-Print Network [OSTI]

On the Evaluation of Snippet Selection for WebCLEF A. Overwijk, D. Nguyen, C. Hauff, R.B. Trieschnigg, D. Hiemstra, F.M.G. de Jong University of Twente, The Netherlands arnold.overwijk@gmail.com, dong

Hiemstra, Djoerd

133

On the Evaluation of Snippet Selection for Information Retrieval A. Overwijk, D. Nguyen, C. Hauff, R.B. Trieschnigg, D. Hiemstra, F.M.G. de Jong  

E-Print Network [OSTI]

On the Evaluation of Snippet Selection for Information Retrieval A. Overwijk, D. Nguyen, C. Hauff, R.B. Trieschnigg, D. Hiemstra, F.M.G. de Jong Twente University arnold.overwijk@gmail.com, dong

Hiemstra, Djoerd

134

X-ray and neutron scattering studies of the Rb?MnF? and Cu?â??őxMgxĚłGeO? in an external magnetic field  

E-Print Network [OSTI]

This thesis presents results of two scattering studies of low dimensional magnetic materials. The first is a neutron scattering study of Rb2MnF4, a nearly ideal two-dimensional square lattice Heisenberg antiferromagnet ...

Christianson, Rebecca J. (Rebecca Jean), 1973-

2001-01-01T23:59:59.000Z

135

Pressure induced tetragonal to monoclinic transition in RbN{sub 3} studied from first principles theory  

SciTech Connect (OSTI)

Alkali metal azides are well known for their application as explosives and gas generators. They are used as precursors in synthesis of polymeric nitrogen, an ultimate green high energy density material. Among the alkali metal azides, rubidium azide RbN{sub 3} crystallizes in tetragonal structure with linear azide ions arranged in layers and binds through weak dispersive interactions. In this present work, we have studied the structural stability, electronic structure and optical properties of solid RbN{sub 3} by using van der Waals corrected density functional theory. We find that the ambient tetragonal structure undergoes a structural transition to monoclinic structure at 0.72 GPa, which is in good agreement with the experimental transition pressure of less than 1 GPa. The phonon frequencies at the gamma point are calculated and found that the lattice mode Eg softens under pressure which may supports the structural phase transition. The electronic band structure and optical properties are calculated by using Tran Blaha-modified Becke Johnson (TB-mBJ) functional and found that solid RbN{sub 3} is an insulator with a gap of 5.976 eV and the optical absorption starts with the UV light of wave length 207.5 nm.

Vaitheeswaran, G., E-mail: gvsp@uohyd.ernet.in; Babu, K. Ramesh, E-mail: gvsp@uohyd.ernet.in [Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad-500046 (India)

2014-04-24T23:59:59.000Z

136

Electrochemistry properties of multilayer TiN/Ti coatings on NiTi alloy for cardiac occluder application  

E-Print Network [OSTI]

-elasticity, thermal shape memory, high corrosion and fatigue resistance, make NiTi alloy especially suitableTi alloy is a subject of numerous recent studies to improve the material's corrosion resistance as well,b , D.Y. Zhang e a Center for Biomedical Materials and Tissue Engineering, Academy for Advanced

Zheng, Yufeng

137

Software Engineering Model Schedule -(with CS 1131) example only; actual schedule may vary; see your academic dept. Includes 3 units of co-curricular activities.  

E-Print Network [OSTI]

Software Engineering Model Schedule - (with CS 1131) example only; actual schedule may vary; see FALL SPRING FALL SPRING CS 1000 1 CS 2321 3 CS 1141 2 CS 3141 3 CS 1131 5 MA 2160 4 CS 2311 3 CS 3421 4 Activity (1) Total 17 Total 15 Total 14-15 Total 16-17 3rd Year 4th Year FALL SPRING FALL SPRING CS 3311 3

138

Highly uniform bipolar resistive switching characteristics in TiO{sub 2}/BaTiO{sub 3}/TiO{sub 2} multilayer  

SciTech Connect (OSTI)

Nanoscale multilayer structure TiO{sub 2}/BaTiO{sub 3}/TiO{sub 2} has been fabricated on Pt/Ti/SiO{sub 2}/Si substrate by chemical solution deposition method. Highly uniform bipolar resistive switching (BRS) characteristics have been observed in Pt/TiO{sub 2}/BaTiO{sub 3}/TiO{sub 2}/Pt cells. Analysis of the current-voltage relationship demonstrates that the space-charge-limited current conduction controlled by the localized oxygen vacancies should be important to the resistive switching behavior. X-ray photoelectron spectroscopy results indicated that oxygen vacancies in TiO{sub 2} play a crucial role in the resistive switching phenomenon and the introduced TiO{sub 2}/BaTiO{sub 3} interfaces result in the high uniformity of bipolar resistive switching characteristics.

Ma, W. J.; Zhang, X. Y.; Wang, Ying; Zheng, Yue, E-mail: zhengy35@mail.sysu.edu.cn, E-mail: wangbiao@mail.sysu.edu.cn [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China) [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China); Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China); Lin, S. P. [Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China) [Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China); Sino-French Institute of Nuclear Engineering and Technology, Zhuhai Campus, Sun Yat-Sen University, Zhuhai 519082 (China); Luo, J. M.; Wang, B., E-mail: zhengy35@mail.sysu.edu.cn, E-mail: wangbiao@mail.sysu.edu.cn [State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China); Li, Z. X. [Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China)] [Micro and Nano Physics and Mechanics Research Laboratory, School of Physics and Engineering, Sun Yat-Sen University, 510275 Guangzhou (China)

2013-12-23T23:59:59.000Z

139

CS 105: Algorithms (Grad) Approximation Algorithms (continued) Feb 21, 2005  

E-Print Network [OSTI]

.g. Clique. = O(log n), e.g. Set Cover. = O(1), e.g. Vertex Cover. Page 1 of 7 #12;CS 105: Algorithms (Grad Algorithms: Vertex Cover 1.1 Introduction to Approximation Algorithms There are several optimization problems (TSP) - finding a minimum cost tour of all cities ďż˝ Vertex Cover - find minimum set of vertex

Chakrabarti, Amit

140

stanford hci group / cs376 Scott Klemmer 17 October 2006  

E-Print Network [OSTI]

1 stanford hci group / cs376 Scott Klemmer · 17 October 2006 Remote Collaboration Paul Badger is highly culturally dependent e.g., Southern Europe has closer boundaries for personal space than America (tables) The Papier-Mâché toolkit (vision, rfid, barcode) iROS and the PatchPanel (interactive rooms

Klemmer, Scott

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


141

CS 4750-001 Database Systems -Spring 2012 ENGR (17672)  

E-Print Network [OSTI]

of 12 The information in this document is private and confidential. Please handle accordingly. #12;CS-R diagrams. DB Security - it was well layed out, easy to follow, and effective. How to build a server the material sql - very relevant subject matter & will def be used in the future Distributed Databases

Sherriff, Mark S.

142

CS-3388 Computer Graphics Fall 2014 Table of Contents  

E-Print Network [OSTI]

: A wire-mesh model of a once famous teapot #12;CS-3388 Computer Graphics Fall 2014 Representing Objects Illustration 1 shows a triangulation of 3D points that create a teapot. Various methods exist to define for the object. Illustration 2: A mirror-like rendering of the teapot Illustration 3: A rendering of the teapot

Beauchemin, Steven S.

143

Autonomic Computer Systems CS321: Group Communication, virt. Synchrony,  

E-Print Network [OSTI]

Autonomic Computer Systems CS321: Group Communication, virt. Synchrony, Paxos and Chubby October 2 Procedure Call Semantics · Group Communication: ­ Reliable Broadcast ­ Replication ­ More on Broadcast-10-02, 6/57 #12;Oral Message Protocol (2) maj=green maj=greenmaj=green L1 L2 L3L0 round 0 round 1 maj=green

Vetter, Thomas

144

? decay of 40Ti and 41Ti and implication for solar-neutrino detection  

Science Journals Connector (OSTI)

The ? decay of 40Ti and 41Ti was studied by measuring the ?-delayed proton and ? emission. The half-lives for 40Ti and 41Ti were determined to be 54(2) and 82(3) ms, respectively. The experimental ?-decay strengths are compared with shell-model calculations and results from other measurements. The integrated Gamow-Teller strengths for 40Ti and 41Ti were found to be quenched, compared to the calculations, by factors of 0.79(3) and 0.93(3), respectively. Based on the experimental 40Ti??-decay strength, the neutrino absorption cross section and induced neutrino event rates for 40Ar were determined to be 14.3(3)×10-43?cm2 and 9.4±0.2(stat)-1.6+1.3(syst) SNU, respectively.

W. Liu; M. Hellström; R. Collatz; J. Benlliure; L. Chulkov; D. Cortina Gil; F. Farget; H. Grawe; Z. Hu; N. Iwasa; M. Pfützner; A. Piechaczek; R. Raabe; I. Reusen; E. Roeckl; G. Vancraeynest; A. Wöhr

1998-11-01T23:59:59.000Z

145

Comparison of CsBr and KBr coated Cu photocathodes: Effects of...  

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

Comparison of CsBr and KBr coated Cu photocathodes: Effects of laser irradiation and work function changes. Abstract: Thin films (7 nm layers) of CsBr and KBr were deposited...

146

Cs4(In0.27Ge0.73)15Ge8  

Science Journals Connector (OSTI)

It contains the standardized crystallographic data set of Cs8In8Ge38 representing the structure type Cs4(In0.27Ge0.73)15Ge8.

P. Villars; K. Cenzual; J. Daams…

2004-01-01T23:59:59.000Z

147

Rotational correlation times of TiCl? molecules as a function of concentration in solution with CS?  

E-Print Network [OSTI]

LIST OF FIGURES 1 BLOCK DIAGRAM OF SPECTROMETER I6 2 SCHEMATIC DIAGRAM OF MARGINAL OSCILLATOR l7 3 PLOT OF'PR vs. CONCENTRATION USING EXPERIMENTAL VALUES FOR gR AND VALUES OBTAINED FROM THE DEBYE THEORY AND HILL THEORY 28 INTRODUCTION M adequate... the order of from 1 to 40 gauss) ~ A type of spectrometer capable of measuring broad lines of weak signal strength is the marginal oscillator spectrometer. A modification of a design by Verdieck and Cornwell of a radio-frequency marginal oscillator...

Musgrove, Clark Guy

1965-01-01T23:59:59.000Z

148

E-Print Network 3.0 - adobe photoshop cs3 Sample Search Results  

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

Grafikbearbeitungssoftware: - Ulead DVD PowerTools 2 - Adobe Photoshop CS3 - Windows Media Encoder Wiedergabesoftware: - Windows Media... Grafikbearbeitungssoftware: - Adobe...

149

Nested Velocity Feedback Control -1 Presented at CS 2007 Dr Richard Mitchell 2007  

E-Print Network [OSTI]

Nested Velocity Feedback Control - 1 Presented at CS 2007 © Dr Richard Mitchell 2007 Nested tolerant to changes in the plant under control #12;Nested Velocity Feedback Control - 2 Presented at CS path #12;Nested Velocity Feedback Control - 3 Presented at CS 2007 © Dr Richard Mitchell 2007 Cherry

Mitchell, Richard

150

Performance Degradation of TiN-and TiC-deposited AISI316 bipolar plates for proton exchange membrane fuel cells  

Science Journals Connector (OSTI)

TiN and TiC were deposited on AISI316 bipolar plates for proton exchange membrane fuel cells (PEMFCs) and their effects on the corrosion resistance and overall cell performance were investigated. TiN with a Ti...

Hee Yeol Lee; Jae Woong Choi; Gil Ho Hwang…

2006-04-01T23:59:59.000Z

151

Ti-based composite coatings with gradient TiC x reinforcements on TC4 titanium alloy prepared by laser cladding  

Science Journals Connector (OSTI)

TiC x -NiTi2/Ti cermet composite coatings C1 and C2 with gradient TiC x ...reinforcements were prepared on TC4 titanium alloy by laser cladding ...

ShuNv Liu; ZongDe Liu; Yang Wang; Peng Yue

2014-07-01T23:59:59.000Z

152

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

State/Regional/Local Assistance for State/Regional/Local Assistance for Interconnection Transmission Planning and Ana Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of 2009 (Recovery Act) State/Regional/Local Assistance for Interconnection Transmission Planning and Ana Based on OE's review of the information concerning the proposal action, the NEPA compliance Officer has determined that the proposed action fits within the specified class of action, other regulatory requirements set forth are met, and proposed action is hereby categorically excluded from further NEPA review. Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment

153

Record of Categorical Exclusion (CS) Determination, Office of Electricity  

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

Smart Grid Investment Grant Program Smart Grid Investment Grant Program (EISA 1306) Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of 2009 (Recovery Act) Smart Grid Investment Grant Program (EISA 1306) Based on OE's review of the information concerning the proposal action, the NEPA compliance Officer has determined that the proposed action fits within the specified class of action, other regulatory requirements set forth are met, and proposed action is hereby categorically excluded from further NEPA review. Record of Categorical Exclusion (CS) Determination, Office of Electricity Delivery and Energy Reliability (OE): American Recovery and Reinvestment Act of 2009 (Recovery Act) Smart Grid Investment Grant Program (EISA 1306)

154

Optimization of Photodiode Readout of CsI(Tl) Crystals  

E-Print Network [OSTI]

An experimental setup for CsI crystal readout studies and a standard electronic readout chain are introduced and used in order to measure differences in light yield and equivalent noise for different readout schemes (direct and wavelength shifter). The linearity of the system and two possibilities for determination of the equivalent noise energy are discussed. The setup is used to compare temperature and bias voltage dependence of different photodiode types. Thorough studies of different couplings of photodiodes and crystals result in similar values of equivalent noise energy well below the specifications of the TDR for wavelength shifter readout and direct readout with photodiodes glued on a carrier plate made of plexiglass that is in optical contact with the crystal. contact: brose@pktw03.phy.tu-dresden.de The aims of the studies described in this note are a comparison of different readout schemes (wavelength shifter, direct) for large CsI(Tl) crystals with regard to li...

Brose Dahlinger Eckstein; J. Brose; G. Dahlinger; P. Eckstein; K. R. Schubert

1995-01-01T23:59:59.000Z

155

Pretreatment/Radionuclide Separations of Cs/Tc from Supernates  

SciTech Connect (OSTI)

Significant improvements have been made in ion exchange and solvent extraction materials and processes available for separation of the radionuclides cesium and technetium from both acid and alkaline waste solutions. New ion exchange materials and solvent extraction reagents are more selective for Cs over sodium and potassium than previous materials. The higher selectivity gives higher Cs capacity and improved separation processes. Technetium removal has been improved by new ion exchange resins, which have either improved capacity or easier elution. Several different crown ethers have been shown to extract pertechnetate ion selectively over other anions. Organic complexants in some waste solutions reduce pertechnetate ion and stabilize the reduced species. Selective oxidation allows conversion to pertechnetate without oxidation of the organic complexants.

Thompson, M.C. [Westinghouse Savannah River Company, AIKEN, SC (United States)

1998-09-01T23:59:59.000Z

156

Corrosion resistance and friction of sintered NdFeB coated with Ti/TiN multilayers  

E-Print Network [OSTI]

Corrosion resistance and friction of sintered NdFeB coated with Ti/TiN multilayers Yuanyuan Cheng Polarization Fretting corrosion Ti/TiN multilayers were deposited on sintered NdFeB by radio frequency magnetron sputtering. The film grain size decreased with the number of multilayers in the stack. Corrosion

Volinsky, Alex A.

157

CS 105: Grad. Algorithms Winter 2005 MST VERIFICATION  

E-Print Network [OSTI]

Ancestors (LCA's). COMPUTE LCA'S: for each {u, v} # E - T : compute l = LCA(u, v) and put {u, v@cs.dartmouth.edu 2 LCA and Disjoint Set Union Maintain n elements under two operations. UNION(A, B, C) : C # A # B. LCA Algorithm : Given a rooted tree T , a set P of pairs of {u, v} # V and |P | = m Goal: Find LCA

Chakrabarti, Amit

158

CS322 Fall 1999 Module 5 (Search Issues)  

E-Print Network [OSTI]

. The aim of this assignment is to learn more about search, both advanced search techniques as well as how,semantics],[proofs]). 1 #12;CPSC 322 Fall 1999 Assignment 5 2 mod(m4,[intro],[search]). mod(m5,[search,symbols],[advanced_searchCS322 Fall 1999 Module 5 (Search Issues) Assignment 5 Due: 1:30pm, Wednesday 13 October 1999

Poole, David

159

Complex magnetic behavior of the sawtooth Fe chains in Rb2Fe2O(AsO4)2  

SciTech Connect (OSTI)

Results of magnetic eld and temperature dependent neutron diraction and magnetization mea- surements on oxy-arsenate Rb2Fe2O(AsO4)2 are reported. The crystal structure of this compound contains pseudo-one-dimensional [Fe2O6] sawtooth-like chains, formed by corner sharing isosce- les triangles of Fe3+ ions occupying two nonequivalent crystallographic sites. The chains extend innitely along the crystallographic b-axis and are structurally conned from one another via dia- magnetic (AsO4)3- units along the a-axis, and Rb+ cations along the c-axis direction. Neutron diraction measurements indicate the onset of a long range antiferromagnetic order below approxi- mately 25 K. The magnetic structure consists of ferrimagnetic chains which are antiferromagnetically coupled with each other. Within each chain, one of the two Fe sites carries a moment which lies along the b-axis, while the second site bears a canted moment in the opposite direction. Exter- nally applied magnetic eld induces a transition to a ferrimagnetic state, in which the coupling between the sawtooth chains becomes ferromagnetic. Magnetization measurements performed on optically-aligned single crystals reveal evidence for an uncompensated magnetization at low mag- netic elds that could emerge from to a phase-segregated state with ferrimagnetic inclusions or from antiferromagnetic domain walls. The observed magnetic states and the competition between them is expected to arise from strongly frustrated interactions within the sawtooth chains and relatively weak coupling between them.

Garlea, Vasile O [ORNL] [ORNL; Sanjeewa, Liurukara D. [Clemson University] [Clemson University; McGuire, Michael A [ORNL] [ORNL; Kumar, Pramod [Indian Institute of Information Technology] [Indian Institute of Information Technology; Sulejmanovic, Dino [Clemson University] [Clemson University; Hwu, Shiou-Jyh [Clemson University] [Clemson University

2014-01-01T23:59:59.000Z

160

Calculator Tips for TI-30XA  

E-Print Network [OSTI]

TI-30XA Calculator Tips. Calculator Memory. - To use the memory function, hit the STO key to store a number in either memory 1, 2, or 3. o To store the product of ...

Owen Davis

2013-01-04T23:59:59.000Z

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


161

Na, Mg, Ni and Cs distribution and speciation after long-term alteration of a simulated nuclear waste glass  

E-Print Network [OSTI]

distribution and speciation of Na, Mg, Ni and Cs in a simulated (inactive) nuclear waste glass were studied and Cs represent dose determining long-lived radionuclides (59 Ni, 135 Cs) in vitrified nuclear wasteNa, Mg, Ni and Cs distribution and speciation after long-term alteration of a simulated nuclear

162

E-Print Network 3.0 - avastart ti traumade Sample Search Results  

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

University of South Carolina Collection: Mathematics 15 Characterization of TiN, TiC and TiCN coatings on Ti50.6 at.% Ni alloy deposited by PIII and deposition technique...

163

E-Print Network 3.0 - amorphous ni-ti alloys Sample Search Results  

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

044103 (6pp) doi:10.10881748-604134044103 Summary: .10881748-604134044103 Ti-TiC-TiCDLC gradient nano-composite film on a biomedical NiTi alloy Yufeng Zheng1,2, Dong...

164

Owen, R.B., Sandhu, N., 2000. Heavy metal accumulation and anthro-pogenic impacts on Tolo Harbour, Hong Kong. Mar. Pollut. Bull. 40,  

E-Print Network [OSTI]

.-M., 2003. Pollution history of the Masan Bay, southeast Korea, from heavy metals and foraminiferaOwen, R.B., Sandhu, N., 2000. Heavy metal accumulation and anthro- pogenic impacts on Tolo Harbour and tracer elements in sediments of the Ria de Vigo (NW Spain): an assessment of metal pollution. Mar. Pollut

Yu, K.N.

165

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, RbSr and SmNd systematics: case  

E-Print Network [OSTI]

TTG magmatism in the Congo craton; a view from major and trace element geochemistry, Rb­Sr and Sm of the Sangmelima region (Ntem complex, Congo craton) in southern Cameroon range in modal composition from rocks. TTG intrusions in the Sangmelima region represent a major Archaean accretion event in the Congo craton

Siebel, Wolfgang

166

1 -SUBTIDAL 2 -INTERTIDAL RB ROCK UB UNCONSOLIDATED AB AQUATIC BED RF -REEF OW -OPEN WATER/ AB AQUATIC BED RF REEF RS ROCKY SHORE US -UNCONSOLIDATED  

E-Print Network [OSTI]

M - MARINE 1 - SUBTIDAL 2 - INTERTIDAL RB ­ ROCK UB ­ UNCONSOLIDATED AB ­ AQUATIC BED RF - REEF OW - OPEN WATER/ AB ­ AQUATIC BED RF­ REEF RS ­ ROCKY SHORE US - UNCONSOLIDATED BOTTOM BOTTOM Unknown Bottom ­ UNCONSOLIDATED AB ­ AQUATIC RF ­ REEF OW - OPEN WATER/ AB ­ AQUATIC RF­ REEF SB ­ STREAMBED RS - ROCKY US

Gray, Matthew

167

NREL: Wind Research - Viryd Technologies' CS8 Turbine Testing and Results  

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

Viryd Technologies' CS8 Turbine Testing and Results Viryd Technologies' CS8 Turbine Testing and Results Viryd Technologies CS8 wind turbine. Text Version As part of the National Renewable Energy Laboratory and U.S. Department of Energy (NREL/DOE) Independent Testing project, NREL is testing Viryd Technologies' CS8 small wind turbine at the National Wind Technology Center (NWTC). The CS8 is an upwind, horizontal-axis, three-bladed, stall controlled turbine rated at 8 kilowatts (kW). It has an 8.5-meter rotor diameter and is mounted on a guyed tilt-up lattice tower with a hub height of 24.9 meters. The CS8 uses a single-phase, grid-connected, induction generator that operates at 240 volts AC. Testing Summary Supporting data and explanations for data included in this table are provided in the final reports.

168

Lateral variation of 134Cs and 137Cs concentrations in surface seawater in and around the Japan Sea after the Fukushima Dai-ichi Nuclear Power Plant accident  

Science Journals Connector (OSTI)

A total of 82 surface seawater samples was collected in the Japan Sea and the southwestern Okhotsk Sea before and after the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident. Analysis of 134Cs and 137Cs concentrations using low-background ?-spectrometry revealed that the 137Cs concentration of the samples collected in June 2011 was 1.5–2.8 mBq/L, which is approximately 1–2 times higher than the pre-accident 137Cs level, while the 134Cs concentration was less than detectable to 1 mBq/L. In addition to 134Cs being clearly detected (?1 mBq/L), 137Cs concentration in water samples from the northeastern Japan Sea (2–2.8 mBq/L) was also higher than that from the coast in the southwestern Japan Sea (?1.5 mBq/L). These higher concentrations in the northeastern Japan Sea could be ascribed to the atmospheric transport of nuclides from the FDNPP as aerosols and subsequent transport and dilution after delivery to the sea surface.

M. Inoue; H. Kofuji; S. Nagao; M. Yamamoto; Y. Hamajima; K. Yoshida; K. Fujimoto; T. Takada; Y. Isoda

2012-01-01T23:59:59.000Z

169

Software Engineering Model Schedule -(Starting with CS 1121) example only; actual schedule may vary; see your academic dept. Includes 3 units of co-curricular activities.  

E-Print Network [OSTI]

Software Engineering Model Schedule - (Starting with CS 1121) example only; actual schedule may Year 2nd Year FALL SPRING FALL SPRING CS 1000 1 CS 1122 3 CS 1141 2 CS 2311 3 CS 1121 3 MA 2160 4 CS Cocurricular Activity (1) Total 15 Total 15 Total 14-15 Total 16-17 3rd Year 4th Year FALL SPRING FALL SPRING

170

The Status Of GLAST CsI Calorimeter  

SciTech Connect (OSTI)

The GLAST Large Area Telescope (LAT) CsI calorimeter, which consists of 16 flight modules and 2 spare modules, was assembled in 2004-2005 by an international team from the USA, France and Sweden. Each module contains 96 CsI crystals supported by a carbon fiber composite structure and read out from both ends with silicon PIN photodiodes. Signals from the array of photodiodes are processed by custom analog ASICs and commercial ADCs. After assembly, each module underwent a full environmental test program including electromagnetic interference and compatibility, vibration, and thermal-vacuum test to flight-acceptance levels. The functional performance of each module was verified before and after each test, and calibration with cosmic muons and charge injection was performed throughout the test sequence. All 18 modules showed stable functioning over the few months of the assembly and test program. None of the 1728 crystals experienced mechanical or optical degradation. Integration of the calorimeter modules with the other detector and electronics subsystems into the complete Large Area Telescope began at SLAC in April 2005 and was completed in December 2005. The environmental testing of full LAT instrument is planned for summer 2006. Simultaneously the beam test of calibration unit made of spare modules is planned to be done at PS and SPS beam lines at CERN.

Chekhtman, A. [George Mason University/ Naval Research Laboratory, 4555 Overlook Ave, SW, Washington, DC 20375 (United States)

2006-10-27T23:59:59.000Z

171

Fluorescence from CsF ionic excimers excited by an electron beam  

SciTech Connect (OSTI)

Mixtures of rare gases and cesium fluoride vapors were excited by an intense relativistic electron beam. The fluorescence of the Cs[sup 2+]F[sup [minus

XYang, T.T.; Gylys, V.T.; Bower, R.D.; Harris, D.G. (Rocketdyne Division, Rockwell International, 6633 Canoga Avenue, Canoga Park, California 91303 (United States))

1992-08-01T23:59:59.000Z

172

EnergyCS Inc Energy Control Systems Engineering Inc | Open Energy...  

Open Energy Info (EERE)

Engineering Inc Jump to: navigation, search Name: EnergyCS Inc (Energy Control Systems Engineering, Inc) Sector: Services Product: String representation "Monrovia, Calif ... 4...

173

Optical measurement of Cs distribution in the large negative ion source  

SciTech Connect (OSTI)

To investigate a Cs behavior, optical diagnostic tools have been installed in the large negative ion source, an arc discharge used at large helical device neutral beam injector. A large Cs sputtering is observed during beam extraction due to the backstreaming H{sup +} ions. Distribution of Cs{sup +} light is uniform in the case of a balanced arc discharge, but large increase of Cs{sup +} light during beam extraction is observed in a nonuniform arc discharge. Controlling of the discharge uniformity is effective to reduce the local heat loading from the backstreaming H{sup +} ions at the backplate of ion source.

Ikeda, K.; Nagaoka, K.; Takeiri, Y.; Fantz, U.; Kaneko, O.; Osakabe, M.; Oka, Y.; Tsumori, K. [National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292 (Japan); Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, D-85748 Garching (Germany); National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292 (Japan)

2008-02-15T23:59:59.000Z

174

ECE 554: Computer Architecture -ECE 452 or CS470 or written consent of instructor  

E-Print Network [OSTI]

ECE 554: Computer Architecture - ECE 452 or CS470 or written consent of instructor Pre: - Factors affecting computer system performance - Instruction level parallelism (ILP) Advanced pipelining

Schumacher, Russ

175

E-Print Network 3.0 - antarctica 137cs 40k Sample Search Results  

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

6 MARSAME Appendix C C. EXAMPLES OF COMMON RADIONUCLIDES Summary: Ra and progeny Depleted uranium collimators Metal Foundry 40 K 60 Co 137 Cs Thorium series... Manufacturing...

176

Structure, Magnetism and Conductivity in Epitaxial Ti-doped ...  

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

Magnetism and Conductivity in Epitaxial Ti-doped -Fe2O3 Hematite: Experiment and density functional theory Structure, Magnetism and Conductivity in Epitaxial Ti-doped -Fe2O3...

177

Oxygen Vacancies and Ferromagnetism in CoxTi–x–y...  

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

Vacancies and Ferromagnetism in CoxTi–x–y. Oxygen Vacancies and Ferromagnetism in CoxTi–x–y. Abstract: Abstract: Cobalt-doped titanium dioxide, or CTO, has...

178

Asymmetry of radiation damage properties in Al-Ti nanolayers...  

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

reveal significant and important asymmetries in defect production with sim60% of vacancies created in Al layers compared to Ti layers within the Al-Ti multilayer system. The...

179

Petrologic study of a Miocene gabbro emplaced during initial rifting in the Red Sea  

E-Print Network [OSTI]

) on three samples for Ti, Al, Fe, Mg, Na, Mn, Cr, Sc, V, Co, Rb, Cs, 23 Ba, La, Ce, Nd, Sm, Eu, Tb, Yb, Lu, Hf, Th, and Ta. Miller (1973) did INAA on three samples for Ti, Al, Fe, Mg, Na, Ca, Mn, Cr, Sc, V, Co, Zr, Hf, Th, Ta, Ba, Cs, Ir, Ni, Au, La... at Oregon State University, Coles (1972), Miller (1973), and Palmer (1974 ) did M. S. theses in which they analyzed six of the Jabal at Tirf rocks studied in this thesis (Appendix I) . Coles (1972) did instrumental neutron activation analysis (INAA...

Johnston, Beatrice Bryant

1978-01-01T23:59:59.000Z

180

TiSol | Open Energy Information  

Open Energy Info (EERE)

TiSol TiSol Jump to: navigation, search Name TiSol Place Pasadena, California Sector Solar Product California-based start up focused on the production of dye sensitized solar cells. Coordinates 29.690847°, -95.196308° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.690847,"lon":-95.196308,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

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


181

Morphology, deformation, and defect structures of TiCr{sub 2} in Ti-Cr alloys  

SciTech Connect (OSTI)

The morphologies and defect structures of TiCr{sub 2} in several Ti-Cr alloys have been examined by optical metallography, x-ray diffraction, and transmission electron microscopy (TEM), in order to explore the room-temperature deformability of the Laves phase TiCr{sub 2}. The morphology of the Laves phase was found to be dependent upon alloy composition and annealing temperature. Samples deformed by compression have also been studied using TEM. Comparisons of microstructures before and after deformation suggest an increase in twin, stacking fault, and dislocation density within the Laves phase, indicating some but not extensive room-temperature deformability.

Chen, K.C.; Allen, S.M.; Livingston, J.D.

1992-12-31T23:59:59.000Z

182

Dampfdruckmessungen und Protonenresonanzuntersuchung an Hydriden der intermetallischen Phasen Ti2(Ni, Co) und Ti2(Ni, Fe)  

Science Journals Connector (OSTI)

NMR and hydrogen equilibrium pressure measurements were performed on hydrides of the intermetallic compounds Ti2(Ni, Co) and Ti2(Ni, Fe). The following values of enthalpy ?H and entropy ?S for the formation of th...

Engelbert Tuscher; Kurt Hiebl; Helmut Bittner

1981-02-01T23:59:59.000Z

183

Synthesis of Ti-based electrodes using Ti-salt flocculated sludge and their application in lithium-ion batteries  

SciTech Connect (OSTI)

We report a simple strategy to synthesize the nanostructured TiO{sub 2} samples by a solid state reaction using Ti-salt flocculated sludge. The structure and morphology of the Ti-salt flocculated sludge, nanostructured TiO{sub 2} samples and pure commercial Aldrich TiO{sub 2} powder were characterized by powder X-ray diffraction and field emission scanning electron microscopy (FE-SEM). The electrochemical performances were evaluated in coin type cells. Nanostructured TiO{sub 2} samples, obtained by Ti-salt flocculated sludge shows a higher capacity and better cycling performances than pure commercial Aldrich TiO{sub 2} powder at the cutoff of 1.0–2.5 V especially at high current rate. The enhanced cycling performance can be attributed to the facts that their high crystallinity and uniform nano-sized distribution.

Kang, Jungwon; Rai, Alok Kumar; Kim, Sungjin; Choi, Eunseok; Yoo, Insun [Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757 (Korea, Republic of)] [Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757 (Korea, Republic of); Kim, Jongho [School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757 (Korea, Republic of)] [School of Applied Chemical Engineering and the Research Institute for Catalysis, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757 (Korea, Republic of); Kim, Jaekook, E-mail: jaekook@chonnam.ac.kr [Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757 (Korea, Republic of)] [Department of Materials Science and Engineering, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju 500-757 (Korea, Republic of)

2012-10-15T23:59:59.000Z

184

Band Offsets at the Epitaxial Anatase TiO2/n-SrTiO3(001) Interface...  

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

to measure valence band offsets at the epitaxial anatase TiO2(002)n-SrTiO3(001) heterojunction prepared by molecular beam epitaxy, Within experimental error, the valance band...

185

Carrier-Controlled Ferromagnetism in SrTiO3  

DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

Magnetotransport and superconducting properties are investigated for uniformly La-doped SrTiO3 films and GdTiO3/SrTiO3 heterostructures, respectively. GdTiO3/SrTiO3 interfaces exhibit a high-density 2D electron gas on the SrTiO3 side of the interface, while, for the SrTiO3 films, carriers are provided by the dopant atoms. Both types of samples exhibit ferromagnetism at low temperatures, as evidenced by a hysteresis in the magnetoresistance. For the uniformly doped SrTiO3 films, the Curie temperature is found to increase with doping and to coexist with superconductivity for carrier concentrations on the high-density side of the superconducting dome. The Curie temperature of the GdTiO3/SrTiO3 heterostructures scales with the thickness of the SrTiO3 quantum well. The results are used to construct a stability diagram for the ferromagnetic and superconducting phases of SrTiO3.

Moetakef, Pouya; Williams, James R.; Ouellette, Daniel G.; Kajdos, Adam P.; Goldhaber-Gordon, David; Allen, S. James; Stemmer, Susanne

2012-06-01T23:59:59.000Z

186

Ab initio Molecular Dynamics and Elastic Properties of TiC and TiN Nanoparticles A. V. Postnikov and P. Entel  

E-Print Network [OSTI]

Ab initio Molecular Dynamics and Elastic Properties of TiC and TiN Nanoparticles A. V. Postnikov composition and compared to frozen phonon and molecular dynamics calculations for crystalline TiC and Ti range of frequencies, including the phonon band gap of pure crystalline TiC (near 15 THz). Similar

Entel, P.

187

134Cs and 137Cs activities in coastal seawater along Northern Sanriku and Tsugaru Strait, northeastern Japan, after Fukushima Dai-ichi Nuclear Power Plant accident  

Science Journals Connector (OSTI)

A total of 37 seawater samples were collected at 10 sites along the coastline of the Northern Sanriku and Tsugaru Strait, 250–450 km north of the Fukushima Dai-ichi Nuclear Power Plant in April–December 2009 and May–June 2011, and analyzed for 134Cs and 137Cs activities using low-background ?-spectrometry. The 134Cs and 137Cs activities measured in these samples in May 2011 were found to be 2–3 mBq/L and 2.5–4 mBq/L, respectively. By June, these values had decreased by 25–45%/month and 5–30%/month, respectively. These results can be plausibly explained by surface infusion of these isotopes into the sea by atmospheric transport from Fukushima and their subsequent reduction by water migration to off-shore and deeper regions.

M. Inoue; H. Kofuji; Y. Hamajima; S. Nagao; K. Yoshida; M. Yamamoto

2012-01-01T23:59:59.000Z

188

Export.gov - Welcome to CS World Bank  

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

World Bank World Bank Print | E-mail Page World Bank World Bank Home Doing Business with the World Bank Services for U.S. Companies Trade Events Links About the World Bank New Projects from the World Bank Understanding the Project Cycle The PSLO Program Contact Us Our Worldwide Network About Us Press Room Other Multilateral Development Banks Other Worldwide Markets Welcome to CS World Bank! The World Bank lends and invests billions of dollars in developing countries every year. This constant stream of funds is used to buy goods, consulting services, and civil works projects that contribute to economic development in those countries. The system of doing business with the World Bank is similar to government procurement systems in many countries. Our Global Network at Work Learn how a small manufacturing company began exporting to Turkey

189

A Multi-Sample Cs-Sputter Negative Ion Source  

SciTech Connect (OSTI)

A multi-sample Cs sputter negative-ion source, equipped with a conical-geometry, W-surface-ionizer has been designed and fabricated that permits sample changes without disruption of on-line accelerator operation. Sample changing is effected by actuating an electro-pneumatic control system located at ground potential that drives an air-motor-driven sample-indexing-system mounted at high voltage; this arrangement avoids complications associated with indexing mechanisms that rely on electronic power-supplies located at high potential. In-beam targets are identified by LED indicator lights derived from a fiber-optic, Gray-code target-position sensor. Aspects of the overall source design and details of the indexing mechanism along with operational parameters, ion optics. intensities, and typical emittances for a variety of negative-ion species will be presented in this report.

Alton, G.D.; Ball, J.A.; Bao, Y.; Cui, B.; Reed, C.A.; Williams, C.

1998-10-05T23:59:59.000Z

190

JOURNAL DE PHYSIQUE Colloque C6, supplPment au no 8, Tome 39, aoiit 1978, page C6-743 EXCITATIONS IN THE ISING COMPOUND RbFeC13.2 H20  

E-Print Network [OSTI]

IN THE ISING COMPOUND RbFeC13.2 H20 Q.A.G. van Vlimmeren, C.H.W. Swiiste and W.J.M. de Jonge Department de spin (SCR) a dt8 observ6e dans l'antiferromagn6tique pseudo unidimensionnel d'Ising RbFeC13.2H20 in the pseudo one-dimensional canted Ising antiferromagnet RbFeC13.2H20. Due to the canting of the moments

Boyer, Edmond

191

CS 105: Algorithms (Grad) Set Cover and Application to Shortest Superstring  

E-Print Network [OSTI]

CS 105: Algorithms (Grad) Set Cover and Application to Shortest Superstring Valika K. Wan & Khanh algorithm produces set cover of size 4 by selecting the sets S1, S4, S5, S3 in order. Set-covering problem Page 1 of 9 #12;CS 105: Algorithms (Grad) Set Cover and Application to Shortest Superstring Valika K

Chakrabarti, Amit

192

Effectiveness of a computational thinking (CS0) course on student analytical skills  

Science Journals Connector (OSTI)

: In this paper, we describe the content and evaluation of a Computational Thinking (CS0) course developed to improve the analytical problem solving of students participating in the course. The course is targeted to students who are mathematically under-prepared ... Keywords: CS0, analytical skills, computational thinking, course effectiveness, critical thinking, problem solving

Michele Van Dyne; Jeffrey Braun

2014-03-01T23:59:59.000Z

193

Technical Report CS96466, CSE Dept., UCSD, January 1996 Determining Asynchronous Acyclic Pipeline Execution Times  

E-Print Network [OSTI]

Technical Report CS96­466, CSE Dept., UCSD, January 1996 Determining Asynchronous Acyclic Pipeline of California, San Diego La Jolla, California 92093­0114 fvdonalds,ferranteg@cs.ucsd.edu Abstract Pipeline in the body of a loop, are executed in parallel. A measure of the execution time of a pipeline is needed

Ferrante, Jeanne

194

CS/ECE 757: Advanced Computer Architecture II (Parallel Computer Architecture)  

E-Print Network [OSTI]

-Body Simulation: Barnes-Hut · Ocean Current Simulation: Ocean · VLSI Routing: Locus Route · Ray Tracing ­ Shoot · Simulate ocean currents · discretize in space and time Ocean Basin CS/ECE 757 10 (C) 2005 Mark D. Hill from;Page 5 CS/ECE 757 9 (C) 2005 Mark D. Hill from Adve, Falsafi, Lebeck, Reinhardt, Smith & Singh Ocean

Hill, Mark D.

195

9/8/2008 CS371S -Fall 2008 Behavior and State Machines  

E-Print Network [OSTI]

9/8/2008 CS371S - Fall 2008 Behavior and State Machines 1 Specification of Model Behavior Lecture Topics Behavioral Model State Machines Relation to Other Behavioral Models Derivation of State Machines for Single Classes Derivation of State Machines from System Level #12;9/8/2008 CS371S - Fall 2008 Behavior

Browne, James C.

196

What makes a good paper? CS6101 Exploration of Computer Science Research  

E-Print Network [OSTI]

; can't be taught in 1 hour. Sorry. CS6101 What makes a good paper? 4 #12;Excellent Writing Two aspects or biased? What messages are the figures trying to convey? Why does the proposed algorithm perform better of "Why" Why is it done this way? Why does it work? Why is this method better? CS6101 What makes a good

Leow, Wee Kheng

197

On the Possibility of Using Protonic Solid Electrolyte CsHSO4 in Hydrogen Fuel Cells  

Science Journals Connector (OSTI)

Electrochemical parameters of an H2|air fuel cell with a membrane of solid electrolyte CsHSO4 or composites (1 ? x)CsHSO4/xSiO2 (x = 0.1–0.3) and different electrodes are measured at 175 °C. The maximal power (3....

G. V. Lavrova; M. V. Russkikh; V. G. Ponomareva…

198

Identification of the slow E3 transition {sup 136}Cs{sup m{yields}136}Cs with conversion electrons  

SciTech Connect (OSTI)

We performed at ISOLDE the spectroscopy of the decay of the 8{sup -} isomer in {sup 136}Cs by {gamma} and conversion-electron detection. For the first time the excitation energy of the isomer and the multipolarity of its decay have been measured. The half-life of the isomeric state was remeasured to T{sub 1/2}=17.5(2) s. This isomer decays via a very slow 518-keV E3 transition to the ground state. In addition to this, a much weaker decay branch via a 413-keV M4 and a subsequent 105-keV E2 transition has been found. Thus we have found a new level at 105 keV with spin 4{sup +} between the isomeric and the ground state. The results are discussed in comparison to shell-model calculations.

Wimmer, K. [Fakultaet fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany); Physik Department E12, Technische Universitaet Muenchen, D-85748 Garching (Germany); Koester, U. [Institut Laue Langevin, F-38042 Grenoble Cedex 9 (France); Hoff, P. [Department of Chemistry, University of Oslo, N-0315 Oslo (Norway); Kroell, Th. [Physik Department E12, Technische Universitaet Muenchen, D-85748 Garching (Germany); Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany); Kruecken, R. [Physik Department E12, Technische Universitaet Muenchen, D-85748 Garching (Germany); Lutter, R.; Morgan, Th.; Schwerdtfeger, W.; Thirolf, P. G. [Fakultaet fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany); Mach, H. [Department of Nuclear and Particle Physics, Uppsala University, S-75121 Uppsala (Sweden); Sarkar, S. [Department of Physics, Bengal Engineering and Science University, Shibpur, Howrah 711103 (India); Sarkar, M. Saha [Nuclear and Atomic Physics Division, Saha Institute of Nuclear Physics, Kolkata 700064 (India); Srivastava, P. C. [Grand Accelerateur National d'Ions Lourds, CEA/DSM-CNRS/IN2P3, B.P. 55027, F-14076 Caen Cedex 5 (France); Nuclear Physics Group, Department of Physics, University of Allahabad, Allahabad 211002 (India); Van Isacker, P. [Grand Accelerateur National d'Ions Lourds, CEA/DSM-CNRS/IN2P3, B.P. 55027, F-14076 Caen Cedex 5 (France)

2011-07-15T23:59:59.000Z

199

Combustion synthesis/quasi-isostatic pressing of TiC0.7NiTi cermets: microstructure and transformation characteristics  

E-Print Network [OSTI]

Combustion synthesis/quasi-isostatic pressing of TiC0.7­NiTi cermets: microstructure Abstract TiC0.7­NiTi cermets were produced by com- bustion synthesis followed by quasi-isostatic consolidation while the reaction products were still hot and ductile. The TiC0.7­NiTi cermets were characterized

Meyers, Marc A.

200

CS 550: Advanced Operating Systems This course covers general issues of design and implementation of advanced modern operating systems.  

E-Print Network [OSTI]

CS 550: Advanced Operating Systems Objectives This course covers general issues of design and implementation of advanced modern operating systems. The focus is on issues that are critical to the applications Operating Systems - CS Dept, Illinois ... 1 of 1 #12;

Heller, Barbara

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


201

Polymorphic single crystal {r_reversible} single crystal transition in K{sub 0.975}Rb{sub 0.025}NO{sub 3}  

SciTech Connect (OSTI)

Polymorphic transformations in K{sub 0.975}Rb{sub 0.025}NO{sub 3} single crystals have been investigated by optical microscopy and X-ray diffraction. The equilibrium temperature between modifications II and III has been determined. It is established that the crystal growth at II {r_reversible} III polymorphic transitions is accompanied by the formation and growth of daughter-modification nuclei in the matrix crystal.

Asadov, Yu. G., E-mail: yusifasadov@rambler.ru; Nasirov, E. V. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan)

2010-09-15T23:59:59.000Z

202

Identification of excited states in the Tz=+12 nucleus 75Rb: The quest for experimental signatures of collective neutron-proton correlations  

Science Journals Connector (OSTI)

Excited states in the Tz=12 nucleus 75Rb were observed for the first time using the 40Ca(40Ca,?p) reaction at 128 MeV. Identification was achieved using events detected by the Daresbury recoil separator in coincidence with ? rays detected in the 45 element EUROGAM I Ge-detector array. Threefold events were used to build a decay scheme which consists of two rotational bands observed to I?=(452+) and I?=(332-). The positive parity band in 75Rb behaves similarly to a negative-parity band in 74Kr and contains a region of alignment at ???0.75 MeV. These data, and those of 77Sr, can be interpreted by treating protons and neutrons separately in a cranked shell model approach despite a recent suggestion for the presence of T=1 neutron-proton pairing correlations in the neighboring self-conjugate, odd-odd 74Rb ground state band. Our study suggests that some experimental observables such as the energy levels and moments of inertia, may not be able to differentiate between different T=1 pairing phases in these Tz=12 nuclei.

C. J. Gross; D. Rudolph; W. Satu?a; J. Alexander; C. Baktash; P. J. Coleman-Smith; D. M. Cullen; R. A. Cunningham; J. D. Garrett; W. Gelletly; A. Harder; M. K. Kabadiyski; I. Lazarus; K. P. Lieb; H. A. Roth; D. G. Sarantites; J. A. Sheikh; J. Simpson; Ö. Skeppstedt; B. J. Varley; D. D. Warner

1997-08-01T23:59:59.000Z

203

Bicycle Research Bibliography Updated 6/04 Howat, C.S., editor, 1993. USCF Mechanics' Handbook, First Edition. United  

E-Print Network [OSTI]

Bicycle Research Bibliography ­ Updated 6/04 BOOKS Howat, C.S., editor, 1993. USCF Mechanics Edition. USA Cycling, Colorado Springs, Colorado. Howat, C.S., 2004. The Racing Bicycle Mechanics. TECHNICAL PRESENTATIONS Howat, C.S., 1994. Hazards Analysis of Bicycling: Consumer and Professional

Howat, Colin S. "Chip"

204

Performance Study of K2CsSb Photocathode Inside a DC High Voltage Gun  

SciTech Connect (OSTI)

In the past decade, there has been considerable interest in the generation of tens of mA average current in a photoinjector. Until recently, GaAs:Cs cathodes and K{sub 2}CsSb cathodes have been tested successfully in DC and RF injectors respectively for this application. Our goal is to test the K{sub 2}CsSb photocathode inside a DC gun. Since the multialkali cathode is a compound with constant characteristics over its entire thickness, we anticipate that the lifetime issues seen in GaAs:Cs due to surface damage by ion bombardment would be minimized. Hence successful operation of the K{sub 2}CsSb cathode in a DC gun could lead to a relatively robust electron source capable of delivering ampere level currents. In order to test the performance of a K{sub 2}CsSb cathode in a DC gun, we have designed and built a load lock system that allows the fabrication of the cathode at Brookhaven National Lab (BNL) and its testing at Jefferson Lab (JLab). In this paper, we will present the performance of the K{sub 2}CsSb photocathode in the preparation chamber and in the DC gun.

McCarter J. L.; Rao T.; Smedley, J.; Grames, J.; Mammei, R.; Poelker, M.; Suleiman, R.

2011-09-01T23:59:59.000Z

205

Performance Study of K2CsSb Photocathode inside a DC High Voltage Gun  

SciTech Connect (OSTI)

In the past decade, there has been considerable interest in the generation of tens of mA average current in a photoinjector. Until recently, GaAs:Cs cathodes and K2CsSb cathodes have been tested successfully in DC and RF injectors respectively for this application. Our goal is to test the GaAs:Cs in RF injector and the K2CsSb cathode in the DC gun in order to widen our choices. Since the multialkali cathode is a compound with uniform stochiometry over its entire thickness, we anticipate that the life time issues seen in GaAs:Cs due surface damage by ion bombardment would be minimized with this material. Hence successful operation of the K2CsSb cathode in DC gun could lead to a relatively robust electron source capable of delivering ampere level currents. In order to test the performance of K2CsSb cathode in a DC gun, we have designed and built a load lock system that would allow the fabrication of the cathode at BNL and its testing at JLab. In this paper, we will present the design of the load-lock system, cathode fabrication, and the cathode performance in the preparation chamber and in the DC gun.

T. Rao, J. Smedley, J.M. Grames, R. Mammei, J.L. McCarter, M. Poelker, R. Suleiman

2011-03-01T23:59:59.000Z

206

Separation of CsCl from a Ternary CsCl-LiCl-KCl Salt via a Melt Crystallization Technique for Pyroprocessing Waste Minimization  

SciTech Connect (OSTI)

A parametric study has been conducted to identify the effects of several parameters on the separation of CsCl from molten LiCl-KCl salt via a melt crystallization process. A reverse vertical Bridgman technique was used to grow the salt crystals. The investigated parameters were: (1) the advancement rate, (2) the crucible lid configuration, (3) the amount of salt mixture, (4) the initial composition of CsCl, and (5) the temperature difference between the high and low furnace zones. From each grown crystal, samples were taken axially and analyzed using inductively coupled plasma mass spectrometry (ICP-MS). Results show that CsCl concentrations at the top of the crystals were low and increased to a maximum at the bottom of the salt. Salt (LiCl-KCl) recycle percentages for the experiments ranged from 50% to 75% and the CsCl composition in the waste salt was low. To increase the recycle percentage and the concentration of CsCl in the waste form, the possibility of using multiple crystallization stages was explored to further optimize the process. Results show that multiple crystallization stages are practical and the optimal experimental conditions should be operated at 5.0 mm/hr rate with a lid configuration and temperature difference of 200 °C for a total of five crystallization stages. Under these conditions, up to 88% of the salt can be recycled.

Ammon Williams; Supathorn Phongikaroon; Michael Simpson

2013-02-01T23:59:59.000Z

207

DOSE TO CURIE DETERMINATION FOR CONTAINERS WITH MEASURABLE CS-137  

SciTech Connect (OSTI)

The Next Generation Retrieval (NGR) project will retrieve suspect transuranic (TRU) waste containers from Trenches 17 and 27 in the 218-E-12B (12B) burial ground. The trenches were in operation from May 1970 through October 1972. A portion of the retrieved containers that will require shipment to and acceptance at a treatment, storage, and disposal (TSD) facility and the containers will be either remote-handled (RH) and/or contact-handled (CH). The method discussed in this document will be used for the RH and some of the CH containers to determine the radionuclide inventory. Waste disposition (shipment and TSD acceptance) requires that the radioactive content be characterized for each container. Source-term estimates using high resolution, shielded, gamma-ray scan assay techniques cannot be performed on a number of RH and other containers with high dose rates from {sup 137}Cs-{sup 137m}Ba. This document provides the method to quantify the radioactive inventory of fission product gamma emitters within the containers based on the surface dose rate measurements taken in the field with hand-held survey instruments.

RATHBUN LA; ANDERSON JD; SWAN RJ

2010-12-03T23:59:59.000Z

208

Measurements of CsI band-gap closure to 93 GPa  

Science Journals Connector (OSTI)

Infrared-absorption measurements to a peak pressure of 93 GPa document the pressure-induced closure of the band gap of CsI to about 4450 cm-1 (0.55 eV). In accord with previous spectroscopic measurements to 60 GPa, our data show that the band gap of CsI decreases continuously with pressure, and metallization (complete closure of the gap) is expected to occur above 100 GPa. A recent claim that CsI becomes metallic at 65±5 GPa is therefore spurious.

Quentin Williams and Raymond Jeanloz

1986-01-13T23:59:59.000Z

209

Upper critical field of Ti and ?-TiAl alloys: Evidence of an intrinsic type-II superconductivity in pure Ti  

Science Journals Connector (OSTI)

The upper critical field Hc2 of ?-Ti1-xAlx(0Fermi velocity obtained here is substantially lower than predicted by band calculation. The present work gives clear evidence that pure Ti is an intrinsic type-II superconducting element due to its very low renormalized Fermi velocity.

Liu Shumei; Zhang Dianlin; Jing Xiunian; Lu Li; Li Shanlin; Kang Ning; Wu Xiaosong; J. J. Lin

2000-10-01T23:59:59.000Z

210

Structure and ductility of TiAl  

SciTech Connect (OSTI)

The effect of structural factors (grain size and grain boundary structure) and strain rate on the deformation mechanism and ductility of TiAl in the temperature range of brittle-to-ductile transition and at room temperature was systematically investigated. It has been established that it is possible to substantially affect the deformation mechanism and ductility of this intermetallic by controlling structural factors, particularly the grain size, and varying the strain rate.

Imayev, R.; Salishchev, G.; Imayev, V.; Shagiev, M.; Kuznetzov, A. [Inst. for Metals Superplasticity Problems, Ufa (Russian Federation)

1995-12-31T23:59:59.000Z

211

Photocatalytic H2 production from ethanol over Au/TiO2 and Ag/TiO2  

Science Journals Connector (OSTI)

This paper compares the photocatalytic activities of Au/TiO2 (Au loadings 0-4 wt.%) and Ag/TiO2 photocatalysts (Ag loadings 0-4 wt.%) for H2 production from ethanol-water mixtures under UV irradiation. Au and Ag nanoparticles were deposited on commercially available Degussa P25 TiO2 (85% anatase, 15% rutile) using deposition-precipitation and liquid impregnation methods, respectively. TEM analyses showed the average noble metal nanoparticle size to be ~5 nm for the Au/TiO2 photocatalysts and ~3 nm for the Ag/TiO2 photocatalysts. Au/TiO2 photocatalysts showed a strong localised surface plasmon resonance (LSPR) at 570 nm characteristic for nanocrystalline Au. Complementary XRD studies confirmed that Au and Ag nanoparticles were present in metallic form. Photoluminescence measurements revealed that Au and Ag nanoparticles effectively suppress electron-hole recombination in TiO2, thereby enhancing the photocatalytic activity of TiO2 for hydrogen production. Au/TiO2 photocatalysts were far more active for H2 production from ethanol-water mixtures than Ag/TiO2 photocatalysts. A 1 wt.% Au/TiO2 photocatalyst yielded the highest H2 production rate (34 mmol g?1 h?1). Amongst the Ag/TiO2 photocatalysts, the 2 wt.% Ag/TiO2 sample was the most active (3.7 mmol g?1 h?1). Results are rationalised in terms of differences in the electronic properties of supported Au and Ag nanoparticles, with the former being near ideal for H2 production.

Vedran Jovic; Pei-Huan Hsieh; Wan-Ting Chen; Dongxiao Sun-Waterhouse; Tilo Söhnel; Geoffrey I.N. Waterhouse

2014-01-01T23:59:59.000Z

212

Effects of TiCl4 Purity on the Sinterability of Armstrong-Processed Ti Powder  

SciTech Connect (OSTI)

A series of high purity and low purity powders were synthesized from TiCl4 by the Armstrong process. While both powders displayed swelling when consolidated and sintered, the lower purity powder exhibited this phenomenon in significantly lower degree. The improvement is attributed to the increase in the onset of sintering temperature, which mitigates the entrapment of volatile impurities that would otherwise lead to pore formation and growth. The net effect is that the use of a lower purity TiCl4 may beneficial in two ways: (1) it is a potentially lower cost precursor to Ti powder production and (2) the trace impurities allow higher density components to be fabricated via a typical low-cost press and sinter approach.

Weil, K. Scott; Hovanski, Yuri; Lavender, Curt A.

2009-04-03T23:59:59.000Z

213

Luminescent properties of phosphor converted LED using an orange-emitting Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} phosphor  

SciTech Connect (OSTI)

Graphical abstract: Display Omitted Highlights: ? Phase-pure Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} powders were synthesized by a solid state reaction process. ? The optimum emission intensity was observed at the Eu{sup 2+} ion concentration of 0.006. ? The dipole–dipole interaction was the major concentration quenching mechanism. ? The pc-LED coated with Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} had higher CRI than commercial red phosphor. -- Abstract: A series of orange-emitting Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} phosphors were synthesized by a conventional solid-state reaction method. The as-prepared phosphors were characterized by X-ray powder diffraction (XRD), fluorescence spectroscopy, and spectroradiometry. XRD showed that all prepared samples exhibited a monoclinic Rb{sub 2}CaP{sub 2}O{sub 7} phase. Fluorescence spectroscopy showed that the photoluminescence efficiency of Rb{sub 2}Ca{sub 1?x}P{sub 2}O{sub 7}:Eu{sub x}{sup 2+} phosphors increased with increasing Eu{sup 2+} concentration until x = 0.006, then decreased at higher concentrations, due to a concentration quenching effect. The thermal activation energy was also measured to be 0.40 eV. Furthermore, a phosphor-converted LED (pc-LED) coated with Rb{sub 2}Ca{sub 0.994}P{sub 2}O{sub 7}:Eu{sub 0.006}{sup 2+} was fabricated, which exhibited bright orange emission under a forward bias, from 200 to 300 mA. The color rendering index (CRI) of pc-LED coated with Rb{sub 2}Ca{sub 0.994}P{sub 2}O{sub 7}:Eu{sub 0.006}{sup 2+} was higher than the CRI of pc-LED coated with commercial red phosphor, due to the broad emission band of Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} phosphor. In applying with three-band pc-LEDs, moreover, white pc-LED using Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} phosphor had a higher CRI, than using commercial phosphor. These results indicated that Rb{sub 2}CaP{sub 2}O{sub 7}:Eu{sup 2+} phosphor could be a good candidate for a near-UV based w-LED.

Song, Hee Jo; Yim, Dong Kyun [Department of Materials Science and Engineering, College of Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-744 (Korea, Republic of)] [Department of Materials Science and Engineering, College of Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-744 (Korea, Republic of); Cho, In-Sun [Department of Mechanical Engineering, Stanford University, CA 94305 (United States)] [Department of Mechanical Engineering, Stanford University, CA 94305 (United States); Roh, Hee-Suk; Kim, Ju Seong [Department of Materials Science and Engineering, College of Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-744 (Korea, Republic of)] [Department of Materials Science and Engineering, College of Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-744 (Korea, Republic of); Kim, Dong-Wan, E-mail: dwkim@ajou.ac.kr [Department of Materials Science and Engineering, Ajou University, Woncheon-dong, San 5, Yeongtong-gu, Suwon 443-749 (Korea, Republic of)] [Department of Materials Science and Engineering, Ajou University, Woncheon-dong, San 5, Yeongtong-gu, Suwon 443-749 (Korea, Republic of); Hong, Kug Sun, E-mail: kshongss@plaza.snu.ac.kr [Department of Materials Science and Engineering, College of Engineering, Seoul National University, Daehak-dong, Gwanak-gu, Seoul 151-744 (Korea, Republic of)

2012-12-15T23:59:59.000Z

214

2003 CS 647b Report Transmittal Letter to Dick Cheney | Department of  

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

2003 CS 647b Report Transmittal Letter to Dick Cheney 2003 CS 647b Report Transmittal Letter to Dick Cheney 2003 CS 647b Report Transmittal Letter to Dick Cheney 2003 CS 647b Report Transmittal Letter to Dick Cheney This letter is in response to the annual Competitive Sourcing reporting requirement contained in section 647(b) of Division F of the Consolidated Appropriations Act, for FY 2004, P.L. 108-199. The enclosed report on the Department of Energy's (DOE) Competitive Sourcing program complies with the agency reporting elements outlined in P.L. 108-199 for submitting the annual Congressional Competitive Sourcing Activity Report. In summary, DOE's Fiscal Year (FY) 2003 Competitive Sourcing Activity Report includes cost, savings, Federal full-time equivalent (FTE), and other information on the Department's

215

CS193J Handout #5 Winter 1998 1/13/98  

E-Print Network [OSTI]

CS193J Handout #5 Winter 1998 1/13/98 Decomposition This handout originally written by Nick or independent to merit being put in its own function? A function should solve one problem. Its parameters should

California at Berkeley, University of

216

CS193J Handout #5 Winter 1998 1/13/98  

E-Print Network [OSTI]

CS193J Handout #5 Winter 1998 1/13/98 Decomposition This handout originally written by Nick the parameters be? When is a subtask sufficiently complex or independent to merit being put in its own function

California at Berkeley, University of

217

A comparison of {sup 137}Cs radioactivity in localized evergreen and deciduous plant species  

SciTech Connect (OSTI)

A vegetation study at the Comanche Peak Steam Electric Station (CPSES) near Glen Rose, Texas was conducted in 1991 and 1992. The CPSES is a commercial nuclear power plant owned and operated by Texas Utilities Electric of Dallas, Texas. The US Nuclear Regulatory Commission (USNRC) requires the CPSES to routinely sample broadleaf vegetation in place of milk samples. Few commercial dairies exist in the vicinity. Broadleaf tree species are scarce because the climate and local limestone geology have produced a dry rolling hill topography. An evergreen juniper is the dominant tree species. Few broadleaves during the winter season have hindered year-round sampling. This study compares the environmental {sup 137}Cs concentrations between broadleaf and evergreen foliage at CPSES. Soil {sup 137}Cs concentrations from each vegetation location were also compared to the foliage {sup 137}Cs concentrations. The study`s objective was to determine if the deciduous and evergreen vegetation {sup 137}Cs concentrations are statistically the same.

Rangel, R.C.

1996-05-01T23:59:59.000Z

218

137Cs Trapped by Biomass within 20 km of the Fukushima Daiichi Nuclear Power Plant  

Science Journals Connector (OSTI)

137Cs Trapped by Biomass within 20 km of the Fukushima Daiichi Nuclear Power Plant ... † Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan ...

Akio Koizumi; Tamon Niisoe; Kouji H. Harada; Yukiko Fujii; Ayumu Adachi; Toshiaki Hitomi; Hirohiko Ishikawa

2013-07-26T23:59:59.000Z

219

Time-Resolved Infrared Spectral Photography Studies of Shock-Induced Chemistry in CS2  

Science Journals Connector (OSTI)

Experiments using time-resolved infrared spectral photography (TRISP) in the 6–8.5 µm range to study explosively driven shocks in liquid CS2 are described. In this range, the temporal resolution of the TRISP syst...

A. M. Renlund; S. A. Sheffield; W. M. Trott

1986-01-01T23:59:59.000Z

220

CS2SAT: THE CONTROL SYSTEMS CYBER SECURITY SELF-ASSESSMENT TOOL  

SciTech Connect (OSTI)

The Department of Homeland Security National Cyber Security Division has developed the Control System Cyber Security Self-Assessment Tool (CS2SAT) that provides users with a systematic and repeatable approach for assessing the cyber-security posture of their industrial control system networks. The CS2SAT was developed by cyber security experts from Department of Energy National Laboratories and with assistance from the National Institute of Standards and Technology. The CS2SAT is a desktop software tool that guides users through a step-by-step process to collect facility-specific control system information and then makes appropriate recommendations for improving the system’s cyber-security posture. The CS2SAT provides recommendations from a database of industry available cyber-security practices, which have been adapted specifically for application to industry control system networks and components. Each recommendation is linked to a set of actions that can be applied to remediate-specific security vulnerabilities.

Kathleen A. Lee

2008-01-01T23:59:59.000Z

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


221

Development of thin CsHSO4 membrane electrode assemblies for electrolysis and fuel cell applications.  

E-Print Network [OSTI]

??In this work the use of the solid acid CsHSO4 as an electrolyte in a hydrogen/oxygen fuel cell or the disassociation of water into hydrogen… (more)

Ecklund-Mitchell, Lars E

2008-01-01T23:59:59.000Z

222

Molecular Hydrogen Formation from Proximal Glycol Pairs on TiO2...  

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

Hydrogen Formation from Proximal Glycol Pairs on TiO2(110). Molecular Hydrogen Formation from Proximal Glycol Pairs on TiO2(110). Abstract: Understanding hydrogen formation on TiO2...

223

Microstructure and mechanical properties of Ni-based composite coatings reinforced by in situ synthesized TiB2 + TiC by laser cladding  

Science Journals Connector (OSTI)

A Ni-based composite coating reinforced by in situ synthesized TiB2...and TiC particles was fabricated on Ti6Al4V by laser cladding. An attempt was made to correlate the...2, flower-like or equiaxial TiC, and fin...

Jun Li; Xuan-jun Zhang; Hui-ping Wang…

2013-01-01T23:59:59.000Z

224

CS 2011, 15 17 June 2011, T-Labs Berlin Germany Innovative Internet  

E-Print Network [OSTI]

11th I2 CS 2011, 15 ­ 17 June 2011, T-Labs Berlin Germany Innovative Internet Community Systems I2, 15 ­ 17 June 2011, T-Labs Berlin Germany Pre-Conference Events Tuesday: Informal Welcome Reception Wednesday morning: Gro�er Tiergarten Jogging #12;11th I2 CS 2011, 15 ­ 17 June 2011, T-Labs Berlin Germany

Rossak, Wilhelm R.

225

Cercetarea stiintifica in robotica Cristian Dima ---mailto:cdima+@cs.cmu.edu,  

E-Print Network [OSTI]

Cercetarea ¸stiint¸ificâ??a â??in roboticâ??a Cristian Dima --- mailto:cdima+@cs.cmu.edu, Mihai Budiu --- mailto:mihaib+@cs.cmu.edu mai 2000 Subiect: Institutul de Roboticâ??a al Universitâ??at¸ii Carnegie Mellon Despre robot¸i 1 2 Institutul de Roboticâ??a al Universitâ??at¸ii Carnegie Mellon 2 3 Cercetarea â??in roboticâ??a

Budiu, Mihai

226

A New Method of Low Cost Production of Ti Alloys to Reduce Energy...  

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

or otherwise restricted information. Project Objective Develop a novel low cost method for manufacturing Ti Demonstrate the mechanical properties of Ti using the...

227

Film Coating Process Research and Characterization of TiN Coated Racetrack-type Ceramic Pipe  

E-Print Network [OSTI]

TiN film was coated on the internal face of racetrack-type ceramic pipe by three different methods: radio-frequency sputtering, DC sputtering and DC magnetron sputtering. The deposition rates of TiN film under different coating methods were compared. According to the AFM, SEM, XPS test results,these properties were analyzed, such as TiN film roughness and surface morphology. At the same time, the deposition rates were studied under two types' cathode, Ti wires and Ti plate. According to the SEM test results, Ti plate cathode can improve the TiN/Ti film deposition rate obviously.

Wang, Jie; Zhang, Bo; Wei, Wei; Fan, Le; Pei, Xiangtao; Hong, Yuanzhi; Wang, Yong

2015-01-01T23:59:59.000Z

228

Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions...  

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

Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions with Oxygen Vacancies. Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions with Oxygen Vacancies....

229

Spatial variations of low levels of 134Cs and 137Cs in seawaters within the Sea of Japan after the Fukushima Dai-ichi Nuclear Power Plant accident  

Science Journals Connector (OSTI)

Abstract Our method based on low background ?-spectrometry enabled the measurement of low radiocesium concentrations in only 20 L of seawater. In May 2011 after deposition of radiocesium, 134Cs concentration in surface water within the Sea of Japan was confirmed to be significantly small (Japan without advection to below the thermocline.

Mutsuo Inoue; Hisaki Kofuji; Shinji Oikawa; Takuma Murakami; Masayoshi Yamamoto; Seiya Nagao; Yasunori Hamajima; Jun Misonoo

2013-01-01T23:59:59.000Z

230

O Ti-tE LOVE  

Office of Legacy Management (LM)

' ItqQtJulRl' IICt' O Ti-tE LOVE ~t?Al. . . At2D Al.CLkTED IChTTEtt~ . ' . . . : . ' . i I . . . . .mr TttE HOt\' ORAULE~ STANLEY FItZl:; SFCAKER ' . : ,J WE\J i' ORti STATE ASSH' rtrLY l r . . isay 29,.1980 Consultant to the Kew York ' , .' .I, " ..' . ,"' ! -. . . : . . . I.. . . . . ~. ,:- 9.. :. .' , * Ill . ,.. , ,i / All . ' %: : . : . . -. ;:. * :... . _ -. .' . . . I . ' J n' f armed. ?%c firtdingo and backup documentatiin embodied in thi preliminafy report compel the Task Yorao to call trprm ym; thr: . . I SpcnXer, to cwthorim crnd ompowcr the Assemly Sta?ding,CozmiCte I ' . : ,. . ..: .I' .,' :. .~.. ,:. :,-"'. ; ..d ::. . . .~~ ' .,' .' . : ' , ' ..,, -. . -. . . : : ? :. . . . .; *. . 1 ,.' .i. . . : \. .- :. " ' . . . c. : . I ! .'

231

RbSr ages of igneous rocks from the Apollo 14 mission and the age of the Fra Mauro formation  

Science Journals Connector (OSTI)

Internal Rb-Sr isochrons were determined on four basaltic rocks and on a basaltic clast from a breccia from the Fra Mauro landing site. Rocks 14310, 14073 and 14001,7,3 yield essentially identical ages T = 3.88 ± 0.04 AE and identical high initial 87Sr/86Sr, I = 0.70035 ± 4. Rock 14053 and the clast from breccia 14321 both yield a higher age T = 3.95 ± 0.04 AE and a distinctly lower I = 0.69945 ± 4. Model ages relative to BABI for these rocks range from 4.3 to 4.6 AE. Model ages were determined for soil samples 14141, 14149, 14163, 14259 yielding TBABI of 4.4, 4.5, 4.5 and 4.7 AE respectively. An internal isochron was determined for 12004 and yielded (3.29 ± 0.07 AE, 0.69948 ± 5) in agreement with our previous results for basaltic rocks from the Apollo 12 site. The crystallization ages for Apollo 14 basalts are only 0.2 to 0.3 AE older than were found for mare basalts from the Sea of Tranquillity. Assuming these leucocratic igneous rocks to be representative of the Fra Mauro site, it follows that there were major igneous processes active in these regions, and presumably throughout the highlands, at times only slightly preceding the periods at which the maria were last flooded. If the breccias represent the Fra Mauro formation and if this is the result of excavation of the Imbrium Basin, we must conclude that a major bombardment of the earth-moon system continued to take place at least as late as 3.9 AE or about 0.7 AE after the formation of the solar system. Such a late major bombardment could remove the need for internal heat sources to explain some mare lava flows. Some of the lunar differentiation processes could possibly represent the result of collisional melting of a thin outer layer. This late bombardment requires that planetary objects ? 100 km in size must be stored in unstable orbits with lifetimes of 108 yr or more.

D.A. Papanastassiou; G.J. Wasserburg

1971-01-01T23:59:59.000Z

232

Large negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas RID B-9041-2008  

E-Print Network [OSTI]

Large negative and positive delay of optical pulses in coherently prepared dense Rb vapor with buffer gas Eugeniy E. Mikhailov,1,2,* Vladimir A. Sautenkov,1,3 Irina Novikova,1,4 and George R. Welch1 1Department of Physics and Institute.... To prolong the interaction time, an inert buffer gas is often added to the atomic vapor to slow the diffusion of the coherently prepared atoms through the laser beam [10?12]. However, it has been recently dem- onstrated that significant modification...

Mikhailov, E. E.; Sautenkov, V. A.; Novikova, I.; Welch, George R.

2004-01-01T23:59:59.000Z

233

Electron energy loss study of TiC[111].  

SciTech Connect (OSTI)

The electron energy loss (EEL) spectra of TiC (111) were measured over a wide range of electron primary energies. The electron energy losses below 16 eV were analyzed using the theoretical band calculations of Price and Cooper [11]. The volume and surface plasma excitations were identified from their electron primary energy dependence. Energy losses due to core electrons autoinization effects were identified above 35 eV. We observed a difference in the electronic structure of the surface vs. the bulk of TiC. The temperature dependence of the EEL spectra was studied between 300 to 1250 K. The reaction of the TiC surface with ethylene and oxygen was also investigated. The ethylene bonding to the TiC surface was found to be very weak. There is evidence of the formation of surface defects on the TiC (111) surface at high temperatures.

Chan, Y.; Lee, S. W.; Liao, D.; Cooper, B. R.; Montano, P. A.; Materials Science Division; Brooklyn Coll. of City Univ. of New York; West Virginia Univ.

1992-01-01T23:59:59.000Z

234

Nanolayered CrAlTiN and multilayered CrAlTiN–AlTiN coatings for solid particle erosion protection  

Science Journals Connector (OSTI)

Abstract Applying hard coatings on airfoil surfaces is proven to be an effective approach to mitigating erosion damage to engine components. Nanolayered or multilayered coatings, because of their capability of tailoring hardness and toughness through modifications in the chemistry and architecture of layer constituents, have been explored as potential candidates for this specific application. In this study, nanolayered CrAlTiN (CrN/AlTiN) coatings with different modulation periods, along with multilayered CrAlTiN–AlTiN coatings having different number of layers and different thickness of individual layers, were fabricated, characterized and evaluated. All the coatings significantly outperformed the CrN baseline in erosion resistance, and their performance was strongly affected by the bilayer period of the nanolayered coatings or the layer architectural characteristics of multilayered coatings.

Q. Yang; R. McKellar

2015-01-01T23:59:59.000Z

235

Thermodynamics of the solid solution of hydrogen in ?-titanium alloys: ?-TiMo and ?-TiRe  

Science Journals Connector (OSTI)

The solid solution of hydrogen has been investigated in a series of random ?-TiMo alloys ranging from 0–65 atom % Mo via determination of pressure-composition-temperature relationships; additionally, one (?-TiRe alloy (Ti37 atom % Re) was investigated. The thermodynamic parameters of hydrogen solution were generated from the p-c-T data. The relative partial molar enthalpy at infinite dilution, ?H?Ho, exhibited by ?-TiMo alloys were adjusted to conditions of fixed volume, that of pure ?-Ti. It was found that variations in the resulting ?E?Ho correlated roughly with variations in the electron density of states at the Fermi level. The relative partial molar entropy at infinite dilution was found to vary linearly with Mo content and it is suggested that this trend reflects a blocking of potentially available interstitial sites to hydrogen occupation by Mo atoms at small hydrogen contents. Examination of the excess free energy vs hydrogen content relationships indicates that effects resulting from accommodation of hydrogen electrons by the metal conduction band are significant even at small hydrogen contents in the TiMo alloys; thus, explicit determination of the H-H interaction is not possible in the alloys. By contrast, electronic effects in pure ?-Ti are negligible at small HM and under fixed volume conditions, the H-H interactions in ?-Ti are attractive.

J.F. Lynch; J. Tanaka

1981-01-01T23:59:59.000Z

236

Evaluation of Adsorption Properties for Cs and Sr Selective Adsorbents-13171  

SciTech Connect (OSTI)

The development of effective treatment and disposal methods is very urgent and important subject. Tohoku University and UNION SHOWA have developed various selective adsorbents (zeolites, zeolite sheets and composites loaded with insoluble ferrocyanides) for the effective decontamination of radioactive Cs{sup +} and Sr{sup 2+} As for Cs{sup +} adsorption, CST, chabazite and insoluble ferrocyanides composites had relatively large distribution coefficients (K{sub d}) above 10{sup 3} cm{sup 3}/g and excellent adsorption kinetics in seawater. Even after high temperature calcination at 1,100 deg. C, cesium was still immobilized in the calcined products of Cs{sup +}-zeolites, suggesting high immobilization ability of zeolites for Cs{sup +}. As for Sr{sup 2+} adsorption, A and X zeolites had relatively large K{sub d} values around 10{sup 2} cm{sup 3}/g, and zeolite sheet (A zeolite) exhibited excellent adsorption kinetics in seawater. Considering the decontamination of radioactive Sr{sup 2+} in groundwater, the effects of Ca{sup 2+} and Mg{sup 2+} ions on the K{sub d} value of Sr{sup 2+} were further examined by batch method. The K{sub d} value of Sr{sup 2+} was almost independent of Mg{sup 2+} concentration up to 2,500 ppm, while gradually lowered in the presence of Ca{sup 2+} above 200 ppm, due to the differences in the ionic radius of hydrated ion. The Cs{sup +} and Sr{sup 2+} adsorption ability for KNiFC-A (composite of A zeolite loaded with insoluble ferrocyanides) was examined by batch method. Here the matrix of composite (A zeolite) and loaded ferrocyanides (KNiFC) have high selectivity towards Sr{sup 2+} and Cs{sup +}, respectively. The K{sub d} values of Sr{sup 2+} and Cs{sup +} in seawater were estimated to be above 10{sup 2} and 10{sup 3} cm{sup 3}/g, respectively, indicating the effectiveness for the decontamination of both Sr{sup 2+} and Cs{sup +}. The basic data on the Cs{sup +} and Sr{sup 2+} adsorption properties for selective adsorbents are effective for the practical decontamination processes of these metal ions in seawater and groundwater. (authors)

Nakai, Tomonori; Wakabayashi, Syunya; Mimura, Hitoshi; Niibori, Yuichi; Kurosaki, Fumio; Matsukura, Minoru [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University,Aramaki-Aza-Aoba 6-6-01-2,Sendai, 980-8579 (Japan)] [Dept. of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University,Aramaki-Aza-Aoba 6-6-01-2,Sendai, 980-8579 (Japan); Tanigawa, Hiroshi; Ishizaki, Eiji [UNION SHOWA K.K., 17-20, Mita 2-chome, Minato-ku, Tokyo 108-0073 (Japan)] [UNION SHOWA K.K., 17-20, Mita 2-chome, Minato-ku, Tokyo 108-0073 (Japan)

2013-07-01T23:59:59.000Z

237

File:SaltWells CS-FDM.pdf | Open Energy Information  

Open Energy Info (EERE)

SaltWells CS-FDM.pdf SaltWells CS-FDM.pdf Jump to: navigation, search File File history File usage Metadata File:SaltWells CS-FDM.pdf Size of this preview: 448 × 599 pixels. Other resolution: 449 × 600 pixels. Full resolution ‎(838 × 1,120 pixels, file size: 8.08 MB, MIME type: application/pdf) Map showing the CS-FDM survey results performed at Salt Wells by Willowstick Technologies, LLC. Dark shading highlights conductive highs and lightly shaded to white areas highlight conductive lows, which equate to zones of high or low groundwater saturation. From Montgomery et al. (2005) Figure 1. File history Click on a date/time to view the file as it appeared at that time. Date/Time Thumbnail Dimensions User Comment current 11:08, 13 September 2013 Thumbnail for version as of 11:08, 13 September 2013 838 × 1,120 (8.08 MB) Mbennett (Talk | contribs) Map showing the CS-FDM survey results performed at Salt Wells by Willowstick Technologies, LLC. Dark shading highlights conductive highs and lightly shaded to white areas highlight conductive lows, which equate to zones of high or low groundwater satur...

238

Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances  

E-Print Network [OSTI]

We study the interspecies scattering properties of ultracold Li-Cs mixtures in their two energetically lowest spin channels in the magnetic field range between 800 G and 1000 G. Close to two broad Feshbach resonances we create weakly bound LiCs dimers by radio-frequency association and measure the dependence of the binding energy on the external magnetic field strength. Based on the binding energies and complementary atom loss spectroscopy of three other Li-Cs s-wave Feshbach resonances we construct precise molecular singlet and triplet electronic ground state potentials using a coupled-channels calculation. We extract the Li-Cs interspecies scattering length as a function of the external field and obtain almost a ten-fold improvement in the precision of the values for the pole positions and widths of the s-wave Li-Cs Feshbach resonances as compared to our previous work [Pires \\textit{et al.}, Phys. Rev. Lett. \\textbf{112}, 250404 (2014)]. We discuss implications on the Efimov scenario and the universal geome...

Ulmanis, J; Pires, R; Kuhnle, E D; Weidemüller, M; Tiemann, E

2015-01-01T23:59:59.000Z

239

Bioaccumulation factor of {sup 137}Cs in some marine biotas from West Bangka Indonesia  

SciTech Connect (OSTI)

Radionuclides may be released from nuclear facilities to the marine environment. Concentrations of radionuclides within marine biotic systems can be influenced by a number of factors, including the type of biota, its source, the radionuclide, and specific characteristics of the sampled specimens and the marine environment (salinity, etc.). The bioconcentration factor for a marine organism is the ratio of the concentration of a radionuclide in that organism to the concentration found in its marine water environment - under conditions of equilibrium. Information on the bioaccumulation of Cs-137 in marine organisms is required to risk assessment evaluates the potential risks to human health. Bioaccumulation of Cs was investigated in marine biota from west Bangka such as Marine cat fish (Arius thalassinus), Baramundi (Lates calcarifer), Mackerel (Scomberomorus commerson), Striped eel catfish (Plotosus lineatus), eel tailed fish (Euristhmus microceps), Yellowtail fusilier (Caesio erythrogaster), Coastal crab (Scylla sp), White shrimp (Penaeus merguiensis) and marine bivalve mollusk (Anadara granosa). Muscle of these marine biota, sediments and water were assayed for Cs-137 by HPGe gamma spectrometer. The bioaccumulation factor for fishes were calculated by ratio of concentration Cs-137 in muscle biota to the its concentration in water. The bioaccumulation factor for mollusks were calculates by ratio of concentration Cs-137 in muscle biota to the its concentration in sediments. The bioaccumulation factor were range 4.99 to 136.34.

Suseno, Heny, E-mail: henis@batan.go.id [Radioactive Waste Technology Center - The Indonesia Nuclear Energy Agency (BATAN) (Indonesia)

2014-03-24T23:59:59.000Z

240

A Search for a Light Charged Higgs Boson Decaying to cs at ?s = 7 TeV.  

E-Print Network [OSTI]

??A search for a light charged Higgs boson decaying into cs is presented using data recorded in pp collisions at ?s = 7 TeV. The… (more)

Martyniuk, Alex Christopher

2011-01-01T23:59:59.000Z

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


241

EPR study of Ti3+ ions formed under beta irradiation in silicate  

E-Print Network [OSTI]

1 EPR study of Ti3+ ions formed under beta irradiation in silicate glasses P. Lombard1* , N. Ollier in various silicate glasses have been studied by EPR spectroscopy at 20 K. Different parameters like the [Na of the Ti3+ ion EPR spectra in different Ti-doped silicate glasses has shown three different Ti3

Boyer, Edmond

242

Phase equilibria, formation, crystal and electronic structure of ternary compounds in Ti-Ni-Sn and Ti-Ni-Sb ternary systems  

SciTech Connect (OSTI)

The phase equilibria of the Ti-Ni-Sn and Ti-Ni-Sb ternary systems have been studied in the whole concentration range by means of X-ray and EPM analyses at 1073 K and 873 K, respectively. Four ternary intermetallic compounds TiNiSn (MgAgAs-type), TiNi{sub 2-x}Sn (MnCu{sub 2}Al-type), Ti{sub 2}Ni{sub 2}Sn (U{sub 2}Pt{sub 2}Sn-type), and Ti{sub 5}NiSn{sub 3} (Hf{sub 5}CuSn{sub 3}-type) are formed in Ti-Ni-Sn system at 1073 K. The TiNi{sub 2}Sn stannide is characterized by homogeneity in the range of 50-47 at% of Ni. The Ti-Ni-Sb ternary system at 873 K is characterized by formation of three ternary intermetallic compounds, Ti{sub 0.8}NiSb (MgAgAs-type), Ti{sub 5}Ni{sub 0.45}Sb{sub 2.55} (W{sub 5}Si{sub 3}-type), and Ti{sub 5}NiSb{sub 3} (Hf{sub 5}CuSn{sub 3}-type). The solubility of Ni in Ti{sub 0.8}NiSb decreases number of vacancies in Ti site up to Ti{sub 0.91}Ni{sub 1.1}Sb composition. - Graphical abstract: Isothermal section of the Ti-Ni-Sn phase diagram and DOS distribution in hypothetical TiNi{sub 1+x}Sn solid solution. Highlights: Black-Right-Pointing-Pointer Ti-Ni-Sn phase diagram was constructed at 1073 K. Black-Right-Pointing-Pointer Four ternary compounds are formed: TiNiSn, TiNi{sub 2-x}Sn, Ti{sub 2}Ni{sub 2}Sn, and Ti{sub 5}NiSn{sub 3}. Black-Right-Pointing-Pointer Three ternary compounds exist in Ti-Ni-Sb system at 873 K. Black-Right-Pointing-Pointer The TiNi{sub 2}Sb compound is absent.

Romaka, V.V., E-mail: romakav@yahoo.com [Department of Materials Engineering and Applied Physics, Lviv Polytechnic National University, Ustyyanovycha Str. 5, 79013 Lviv (Ukraine); Rogl, P. [Institut fur Physikalische Chemie der Universitat Wien, Wahringerstrabe 42, A-1090 Wien (Austria); Romaka, L.; Stadnyk, Yu. [Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Kyryla and Mefodiya Str. 6, 79005 Lviv (Ukraine); Melnychenko, N.; Grytsiv, A.; Falmbigl, M. [Institut fur Physikalische Chemie der Universitat Wien, Wahringerstrabe 42, A-1090 Wien (Austria); Skryabina, N. [Perm State University, Bukireva Str. 15, 614990 Perm (Russian Federation)

2013-01-15T23:59:59.000Z

243

Growth and crystal structure of binary molybdate CsFe(MoO{sub 4}){sub 2}  

SciTech Connect (OSTI)

CsFe(MoO{sub 4}){sub 2} single crystals have been grown by solution-melt crystallization with a charge-to-solvent ratio of 1: 3 (with Cs{sub 2}Mo{sub 3}O{sub 10} used as a solvent). The crystal structure of this compound has been refined by X-ray diffraction (X8 APEX automatic diffractometer, MoK{sub {alpha}} radiation, 356 F(hkl), R = 0.0178). The trigonal unit cell has the following parameters: a = b = 5.6051(2) A, c = 8.0118(4) A, V = 217.985(15) A{sup 3}, Z = 1, {rho}{sub calc} = 3.875 g/cm{sup 3}, and sp. gr. P3-barm1. The structure is composed of alternating layers of FeO{sub 6} octahedra (with MoO{sub 4} tetrahedra attached by sharing vertices) and CsO{sub 12} icosahedra.

Bazarov, B. G., E-mail: jbaz@binm.bscnet.ru; Namsaraeva, T. V. [Russian Academy of Sciences, Baikal Institute of Nature Management, Siberian Branch (Russian Federation); Klevtsova, R. F., E-mail: klev@che.nsk.su; Anshits, A. G. [Russian Academy of Sciences, Institute of Inorganic Chemistry, Siberian Branch (Russian Federation); Vereshchagina, T. A. [Russian Academy of Sciences, Institute of Chemistry and Chemical Technology, Siberian Branch (Russian Federation); Glinskaya, L. A. [Russian Academy of Sciences, Institute of Inorganic Chemistry, Siberian Branch (Russian Federation); Fedorov, K. N.; Bazarova, Zh. G. [Russian Academy of Sciences, Baikal Institute of Nature Management, Siberian Branch (Russian Federation)

2010-07-15T23:59:59.000Z

244

Estimation of radiation doses from 137Cs to frogs in a wetland ecosystem  

Science Journals Connector (OSTI)

Currently, there is no established methodology to estimate radiation doses to non-human biota. Therefore, in this study, various dose models were used to estimate radiation doses to moor frogs (Rana arvalis) in a wetland ecosystem contaminated with 137Cs. External dose estimations were based on activity concentrations of 137Cs in soil and water, considering changes in habitat over a life-cycle. Internal doses were calculated from the activity concentrations of 137Cs measured in moor frogs. Depending on the dose model used, the results varied substantially. External dose rates ranged from 21 to 160 mGy/y, and internal dose rates varied between 1 and 14 mGy/y. Maximum total dose rates to frogs were below the expected safe level for terrestrial populations, but close to the suggested critical dose rate for amphibians. The results show that realistic assumptions in dose models are particularly important at high levels of contamination.

K. Stark; R. Avila; P. Wallberg

2004-01-01T23:59:59.000Z

245

New analysis of the two carbon-rich stars CS 22948-27 and CS 29497-34 : binarity and neutron-capture elements  

E-Print Network [OSTI]

We have carried out a new determination of abundances in the very metal-poor CH/CN strong stars CS 29497-34 and CS 22948-27, using high-resolution spectra obtained with the HARPS spectrograph at the 3.6m telescope of ESO, La Silla, that covers the range 400 - 690 nm at a resolution of R = 100,000. Both stars are found to be long period binaries. It is confirmed that the abundance patterns show an enhancement of all the alpha-elements (like Mg, Ca), of the proton capture elements (like Na and Al) and a strong enrichment in "r" and "s" process elements, where the s-enrichment is probably due to a mass transfer episode from a companion in its AGB phase. The possible origins of the abundance pattern and especially of the strong enhancement of both "s" and "r" elements are discussed.

B. Barbuy; M. Spite; F. Spite; V. Hill; R. Cayrel; B. Plez; P. Petitjean

2004-09-09T23:59:59.000Z

246

Measurement of neutron capture on 50Ti at thermonuclear energies  

E-Print Network [OSTI]

At the Karlsruhe and Tuebingen 3.75 MV Van de Graaff accelerators the thermonuclear 50Ti(n,gamma)51Ti(5.8 min) cross section was measured by the fast cyclic activation technique via the 320.852 and 928.65 keV gamma-ray lines of the 51Ti-decay. Metallic Ti samples of natural isotopic composition and samples of TiO2 enriched in 50Ti by 67.53 % were irradiated between two gold foils which served as capture standards. The capture cross-section was measured at the neutron energies 25, 30, 52, and 145 keV, respectively. The direct capture cross section was determined to be 0.387 +/- 0.011 mbarn at 30 keV. We found evidence for a bound state s-wave resonance with an estimated radiative width of 0.34 eV which destructively interfers with direct capture. The strength of a suggested s-wave resonance at 146.8 keV was determined. The present data served to calculate, in addition to the directly measured Maxwellian averaged capture cross sections at 25 and 52 keV, an improved stellar 50Ti(n,gamma)51Ti rate in the thermonuclear energy region from 1 to 250 keV. The new stellar rate leads at low temperatures to much higher values than the previously recommended rate, e.g., at kT=8 keV the increase amounts to about 50 %. The new reaction rate therefore reduces the abundance of 50Ti due to s-processing in AGB stars.

P. V. Sedyshev; P. Mohr; H. Beer; H. Oberhummer; Yu. P. Popov; W. Rochow

1999-07-28T23:59:59.000Z

247

Varietal differences in growth and Cs allocation of blackgram (Vigna mungo) under water stress  

Science Journals Connector (OSTI)

Abstract Plant uptake and distribution of radioactive caesium (137Cs) was examined in an effort to determine how plant-water interactions differ between two blackgram plant varieties with different salt tolerance. Salt-tolerant U Taung-2 (BT) and the salt-sensitive variety Mutpe Khaing To (BS) were grown in pots filled with 137Cs-contaminated soil obtained from Nihonmatsu, Fukushima, Japan. The average soil 137Cs concentration was 1084 Bq kg?1, and the soil type comprised sandy clay loam, where the sand: silt: clay proportion was 62:18:20. After growing for 15 days in a temperature-controlled growth chamber, plants were subjected to drought stress conditions by addition of either 10 or 20% polyethylene glycol (PEG 6000) to the soil to reduce the osmotic potential of the soil, or to field capacity conditions (0% PEG). Analysis of the growth traits and water relations revealed the different strategies employed by the two blackgram varieties under water stress conditions. No differences were observed among the two varieties under field capacity conditions. However, under both drought stress conditions (10 or 20% PEG), the reduction in total leaf area, total biomass and plant growth analysis parameters, in addition to the relative water content, were higher in BS than in BT plants. Both plant varieties exhibited lower 137Cs concentrations in the leaves, shoots and roots under drought stress conditions compared to plants subjected to field capacity conditions. Under drought stress conditions, BT plants showed uptake and translocation of 137Cs from the roots to shoots and leaves, while this activity was seriously limited in BS plants, and especially in the leaf portion of BS plants treated with 20% PEG. In BT plants, potassium moved more freely than Cs from roots to the aerial parts of the plant under water stress conditions, while this was not the case in BS plants. Examination of the hydraulic conductivity showed a positive correlation with the 137Cs concentration in leaf and stem. Our results showed that the accumulation and distribution patterns of 137Cs among part of the blackgram tissues were dependent on plant growth performance, water movement pathways, and selective absorption.

Khin Thuzar Win; Aung Zaw Oo; Han Phyo Aung; Akimi Terasaki; Tadashi Yokoyama; Sonoko Dorothea Bellingrath-Kimura

2015-01-01T23:59:59.000Z

248

Off-center Tl and Na dopant centers in CsI  

SciTech Connect (OSTI)

We use density functional theory calculations to characterize the electronic and structural properties of the Tl and Na dopant centers in CsI. We nd that the Tl and Na centers can accept one or two electrons and couple to long-range relaxations in the surrounding crystal lattice to distort strongly off-center to multiple distinct minima, even without a triplet excitation. The long-range distortions are a mechanism to couple to phonon modes in the crystal, and are expected to play an important role in the phonon-assisted transport of polarons in activated CsI and subsequent light emission in this scintillator.

Van Ginhoven, Renee M.; Schultz, P. A.

2013-12-11T23:59:59.000Z

249

Extra sub-Doppler lines in the vicinity of the third-resonance 6S-8P transition of atomic Cs attributed to optically induced Cs dimers  

SciTech Connect (OSTI)

We report on the observation of additional sub-Doppler lines in a saturated absorption experiment when exploring the vicinity of the 6S{sub 1/2}-8P{sub 3/2} transition of Cs ({lambda}=388 nm). These additional lines are observed only under a relatively strong irradiation of both the pump and the probe beams. Extra narrow lines are also observed in copropagating nonlinear spectroscopy, and around the lines of the V-type three-level system 8P{sub 3/2}-6S{sub 1/2}-8P{sub 1/2} ({lambda}{sub 1}=388 nm, {lambda}{sub 2}=389 nm). We attribute theses additional lines to a probing of high-lying molecular cesium, produced as a result of the optical excitation of Cs atoms, as the low Cs atom density ({<=}10{sup 12}cm{sup -3}) is unable to populate significantly the dimer states in the condition of thermal equilibrium.

Passerat de Silans, Thierry; Maurin, Isabelle; Laliotis, Athanasios; Segundo, Pedro Chaves de Souza; Bloch, Daniel [Laboratoire de Physique des Lasers, Institut Galilee, Universite Paris 13, Villetaneuse, UMR 7538 du CNRS, 99 AvenueJ.B. Clement, F-93430 Villetaneuse (France)

2011-04-15T23:59:59.000Z

250

Characterization and catalytic performance of vanadium supported on sulfated Ti-PILC catalysts issued from different Ti-precursors in selective catalytic reduction of nitrogen oxide by ammonia  

Science Journals Connector (OSTI)

Vanadium supported on sulfated Ti-pillared clay catalysts (STi-PILCs) issued from different Ti-precursors were investigated for selective catalytic reduction (SCR) of NO by NH3 in the presence of O2. The STi-PILC...

J. Arfaoui; L. Khalfallah Boudali; A. Ghorbel; G. Delahay

2009-12-01T23:59:59.000Z

251

??e¦ia e e ˇet ??? oa¦0 to 3i5¦ontinBoB5 Pie¦eFi5e Hinea ˘tiTiUation ...  

E-Print Network [OSTI]

Pie¦eFi5e Hinea ˘tiTiUation. I.R. de Farias JR., M. ?hao, and H. ?hao. State University of New York at jumalo. {defariasy m|haoy |hon??ia}@??ffalo.ed?.

252

Nature of Transactions (TI) Code | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Nature of Transactions (TI) Code | National Nuclear Security Administration Nature of Transactions (TI) Code | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Nature of Transactions (TI) Code Home > About Us > Our Programs > Nuclear Security > Nuclear Materials Management & Safeguards System > NMMSS Information, Reports & Forms > Code Tables > Nature of Transactions (TI) Code

253

TI--CR--AL--O thin film resistors  

DOE Patents [OSTI]

Thin films of Ti--Cr--Al--O are used as a resistor material. The films are rf sputter deposited from ceramic targets using a reactive working gas mixture of Ar and O.sub.2. Resistivity values from 10.sup.4 to 10.sup.10 Ohm-cm have been measured for Ti--Cr--Al--O film <1 .mu.m thick. The film resistivity can be discretely selected through control of the target composition and the deposition parameters. The application of Ti--Cr--Al--O as a thin film resistor has been found to be thermodynamically stable, unlike other metal-oxide films. The Ti--Cr--Al--O film can be used as a vertical or lateral resistor, for example, as a layer beneath a field emission cathode in a flat panel display; or used to control surface emissivity, for example, as a coating on an insulating material such as vertical wall supports in flat panel displays.

Jankowski, Alan F. (Livermore, CA); Schmid, Anthony P. (Solana Beach, CA)

2000-01-01T23:59:59.000Z

254

Low thermal expansion behavior and thermal durability of ZrTiO4Al2TiO5Fe2O3 ceramics between 750 and 1400  

E-Print Network [OSTI]

2002 Abstract The thermal-shock-resistant materials in the system Al2TiO5­ZrTiO4 (ZAT) were synthesized Aluminum titanate (Al2TiO5) is well-known as an excellent thermal shock-resistant material, resulting from. All rights reserved. Keywords: Al2TiO5; Thermal expansion; Thermal shock resistance 1. Introduction

Cao, Guozhong

255

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE  

E-Print Network [OSTI]

FATE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE AND TRANSPORT OF RADIONUCLIDES [U(VI), Sr, Cs] IN VADOSE ZONE SEDIMENTS AT THE HANFORD SITE Abstract by Kenton A that influence radionuclide fate and transport in the Hanford vadose zone. Hanford was established for nuclear

Flury, Markus

256

Penetration of 90Sr and 137Cs in deep layers of the Pacific and vertical diffusion rate of deep water  

Science Journals Connector (OSTI)

......June 1962 research-article Article Penetration of 90Sr and 137Cs in deep layers of the Pacific and vertical diffusion rate of deep water Yasuo Miyake * Katsuko...Mabashi, Suginami, Tokyo Vertical penetration of Sr-90 and Cs-137 down to 5......

Yasuo Miyake; Katsuko Saruhashi; Yukio Katsuragi; Teruko Kanazawa

1962-06-01T23:59:59.000Z

257

PUBLICATIONS (REFEREED) Howat, C.S. III, and Swift, G.W., 1980. A New Correlation of  

E-Print Network [OSTI]

. Srinivasan, S., and Howat, C.S., 1999. Optimization of Propylene Purification System. Paper 8d, AIChE Annual.M., Mark, L.M. (presenter), and Howat, C.S., 1989. Purification of Butadiene Using Thermally Coupled Estimation for the Removal of Acetone and Benzene from Waste Water. Paper 170i, AIChE Annual Meeting, San

Howat, Colin S. "Chip"

258

Dynamic recrystallization and superplasticity in TiAl  

SciTech Connect (OSTI)

The effect of structural factors (grain size, grain boundary structure and fraction of the second phase) on dynamic recrystallization and superplasticity in the TiAl intermetallic alloy was studied. The possibilities of the formation of submicrocrystalline structure and the abrupt decrease of the superplastic temperature were shown. It was established that the occurrence of dynamic recrystallization and superplastic flow led to the formation of homogeneous microstructure and the improvement of low-temperature ductility in TiAl.

Salishchev, G.; Imayev, R.; Imayev, V.; Shagiev, M. [Inst. for Metals Superplasticity Problems, Ufa (Russian Federation)

1995-12-31T23:59:59.000Z

259

Carbide precipitation in gamma-TiAl alloys  

SciTech Connect (OSTI)

Carbide precipitation in gamma-TiAl is observed and found to involve the formation of coherent, rod-shaped perovskite precipitates as a metastable transition phase. At temperatures above 750 deg C, the formation of plate-shaped H-phase particles on dislocations and grain boundaries is accompanied by dissolution of the perovskite precipitate dispersions. This temperature regime includes possible service temperatures for gamma-TiAl-based alloys. 10 refs.

Chen, S.; Beaven, P.A.; Wagner, R. (GKSS-Forschungszentrum Geesthacht GmbH, (Germany))

1992-04-01T23:59:59.000Z

260

Safe Exploration in Markov Decision Processes Teodor Mihai Moldovan moldovan@cs.berkeley.edu  

E-Print Network [OSTI]

Safe Exploration in Markov Decision Processes Teodor Mihai Moldovan moldovan@cs.berkeley.edu Pieter for safe exploration methods in Markov decision processes. We first pro- pose a general formulation reinforcement learning algorithms provide strong exploration guar- antees, but they tend to rely on an ergod

Abbeel, Pieter

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


261

CERAMIC BREEDER BLANKET FOR ARIES-CS A.R. Raffray1  

E-Print Network [OSTI]

to a Rankine steam cycle (e.g. the EU He-cooled pebble bed blanket3 ). However, safety concerns have been in the first phase of the ARIES-CS study. The blanket is coupled to a Brayton power cycle to avoid the safety a Brayton cycle to such a blanket, by optimizing the cycle as well as by maximizing the coolant temperature

California at San Diego, University of

262

Introduction to Ad hoc Networks CS-647: Advanced Topics in Wireless Networks  

E-Print Network [OSTI]

1-1 Introduction to Ad hoc Networks CS-647: Advanced Topics in Wireless Networks Drs. Baruch Awerbuch 2008 #12;1-2 Outline What is an ad hoc network? Challenges facing ad hoc networks History of Ad C. K. Toh, Chapter 3, "Ad Hoc Wireless Networks", Prentice Hall, 2002 D. P. Agrawal and Qing

Amir, Yair

263

Computer Science Colloquia 2010-11 http://www.cs.iastate.edu/~colloq/new/  

E-Print Network [OSTI]

Computer Science Colloquia 2010-11 http://www.cs.iastate.edu/~colloq/new/ ALL SCIENCE IS COMPUTER computation. In particular, we have found that building these hierarchies in image space dramatically reduces is an Associate Professor in the Department of Computer Science at the University of Iowa. His specialty

Mayfield, John

264

Computer Science Colloquia 2010-11 http://www.cs.iastate.edu/~colloq/new/  

E-Print Network [OSTI]

Computer Science Colloquia 2010-11 http://www.cs.iastate.edu/~colloq/new/ ALL SCIENCE IS COMPUTER SCIENCE Dr. Jack Lutz Molecular Programming and Self-Assembly: How Computer Scientists Will Lead are computer scientists, and this will be even more true in the future. This is because the methods

Mayfield, John

265

September 23, 2004/ARR ARIES-CS Power Core: Initial Scoping  

E-Print Network [OSTI]

September 23, 2004/ARR 1 ARIES-CS Power Core: Initial Scoping Study and Assessment A. René Raffray University of California, San Diego OFES, DoE September 23, 2004 #12;September 23, 2004/ARR 2 Outline Phase I Engineering Effort · Maintenance and Assembly · Power Core Concepts · Engineering and Physics Integration Very

Raffray, A. René

266

CSCI 227 Page 1 Fall 2014 CSCI 227 Introduction to Cybersecurity for Non-CS majors  

E-Print Network [OSTI]

CSCI 227 Page 1 Fall 2014 Syllabus CSCI 227 ­ Introduction to Cybersecurity for Non-CS majors Fall.0 Course Description This course will provide an introduction to concepts related to Cybersecurity of Cybersecurity; introduce concepts of Internet security; present properties of malicious software; study tools

Banik, Shankar M.

267

CS 115: Programming I Spring 2014 Instructors Dr. Suzanne Rivoire, Dr. Tia Watts, Noah Melcon  

E-Print Network [OSTI]

CS 115: Programming I ­ Spring 2014 Instructors Dr. Suzanne Rivoire, Dr. Tia Watts, Noah Melcon Meeting times Lecture: TTh 9:20­10:35 Darwin 102 Rivoire Lab (Sections 1/2): T 5:00­7:50 Darwin 25 Watts

Ravikumar, B.

268

CS233917-AF National Center for Chronic Disease Prevention and Health Promotion  

E-Print Network [OSTI]

CS233917-AF National Center for Chronic Disease Prevention and Health Promotion Division, Physical Activity, and Obesity Profile Obesity has important consequences on our nation's health by unhealthy options when it comes to diet and physical activity.We need public health approaches that make

269

Technical Report CS96481, CSE Dept., UCSD, April 1996 Determining Asynchronous Pipeline Execution Times  

E-Print Network [OSTI]

Technical Report CS96­481, CSE Dept., UCSD, April 1996 Determining Asynchronous Pipeline Execution pipelining is a form of parallelism in which processors execute different loop tasks (loop statements) as opposed to different loop iterations. An asynchronous pipeline schedule for a loop is an assignment

Ferrante, Jeanne

270

Conference Rankings I promised to send you a website for CS conference rankings. It is at  

E-Print Network [OSTI]

Conference Rankings I promised to send you a website for CS conference rankings. It is at http://www.csconferenceranking.org/conferencerankings/alltopics.html It is not the only such ranking, but it seems to agree with what I have found in attending conferences to rank conference are anonymous only revealed after their death. The reason is that people have been

Allan, Vicki H.

271

Testing and Verification of Digital Circuits ECE/CS 5745/6745  

E-Print Network [OSTI]

1 Testing and Verification of Digital Circuits ECE/CS 5745/6745 Syllabus Instructor: Priyank Kalla@ece.utah.edu 1. Introduction Introduction to VLSI Testing and Design Verification Sets, Relations and Testing Types Logical Modeling of Physical Faults Fault Detection using Boolean Difference

Kalla, Priyank

272

BOOT CAMP: A FIRST YEAR SEMINAR IN CS1 LABS Alice Armstrong  

E-Print Network [OSTI]

BOOT CAMP: A FIRST YEAR SEMINAR IN CS1 LABS Alice Armstrong Computer Science Department for college success. This "boot camp" also lays out the degree concentrations available in the Computer hours a week: two hours identical to the non-major sections and an additional hour nicknamed "boot camp

Armstrong, Alice

273

June 14-15, 2006/ARR ARIES-CS Power Core Engineering  

E-Print Network [OSTI]

) 10.0 Avg. heat flux on divertor including alpha loss component (MW/m2) 0.985 THERMAL POWER IN BLANKETJune 14-15, 2006/ARR 1 ARIES-CS Power Core Engineering: Updating Power Flow, Blanket and Divertor,sol Comprehensive Power Flow Diagram Including Possibility of Added Power and Alpha Loss Flux Going to Both FW

Raffray, A. René

274

Introduction to Text Mining and Web gaocong@cs.aau.dk  

E-Print Network [OSTI]

standard data-mining #12;Definitions of Text Mining · Text mining mainly is about somehow extractingIntroduction to Text Mining and Web Search Gao Cong gaocong@cs.aau.dk Some slides are borrowed from;Objectives · To have a rough idea of text mining and web search ­ Not about deep techniques · Connections

Kaiserslautern, Universität

275

The Tokamak Physi'cs Experiment* Ronald C. Davidson+ and Robert J. Goldston  

E-Print Network [OSTI]

The Tokamak Physi'cs Experiment* Ronald C. Davidson+ and Robert J. Goldston Princeton Plasma) [Nevins et al., Plasma Physics and Controlled Nucle& F&on, Wiirzburg (InternationalAtomic Energy' rather than "advanced" physics regimes.The elementsof these advancedregimes, and the machine

276

debussy@cs.yonsei.ac.kr, iklee@yonsei.ac.kr Affective Icons for Music Exploring  

E-Print Network [OSTI]

O debussy@cs.yonsei.ac.kr, iklee@yonsei.ac.kr Affective Icons for Music Exploring Min and colors of harmonograph curves. These curves can be used as icons for music retrieval, and we demonstrate. This approach is compatible with a standard icon-based file browser. . Introduction Since the appearance

Lee, In-Kwon

277

Childrens School 2012-2013 Carnegie Mellon University FAMILY HANDBOOK www.psy.cmu.edu/cs  

E-Print Network [OSTI]

Childrens School 2012-2013 Carnegie Mellon University FAMILY HANDBOOK www.psy.cmu.edu/cs 1 Dear and assessing childrens progress in all aspects of the social, cognitive, and physical foundations necessary of this Family Handbook is to provide an organized source of detailed information specifically related

278

Children's School 2013-2014 Carnegie Mellon University FAMILY HANDBOOK www.psy.cmu.edu/cs  

E-Print Network [OSTI]

Children's School 2013-2014 Carnegie Mellon University FAMILY HANDBOOK www.psy.cmu.edu/cs 1 Dear and assessing children's progress in all aspects of the social, cognitive, and physical foundations necessary of this Family Handbook is to provide an organized source of detailed information specifically related

279

Algebra and Geometry of Rough Logic Controllers T. Y. Lin 1 tylin@cs.susu.edu  

E-Print Network [OSTI]

for intelligent controls, is a mathematical formalism that integrates fuzzy logic, rough sets , evolutionary: control, fuzzy logic, evolutionary computing, modal logic, rough logic, rough set. 1 IntroductionAlgebra and Geometry of Rough Logic Controllers T. Y. Lin 1 tylin@cs.susu.edu Martin Wildberger 2

Lin, Tsau Young

280

(OSCAR API ver. 2.0) http://www.kasahara.cs.waseda.ac.jp/  

E-Print Network [OSTI]

(OSCAR API ver. 2.0) http://www.kasahara.cs.waseda.ac.jp/ kasahara@waseda.jp Tel. 03 APIOSCAR OSCAR OSCAR OSCAR Many-core Chip , , #12;OSCAR API v2.0 · NEDO20081114OSCAR API ver.1.0 22CFortran2 CFortran DMAC OSCAR API ver.2.0OSCAR APIOSCAR API2012425http

Kasahara, Hironori

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


281

Internal conversion coefficients in (134)Cs, (137)Ba, and (139)La: A precise test of theory  

E-Print Network [OSTI]

Recently we measured the ratio of K-shell internal conversion coefficients, alpha(K), for the 127.5-keV E3 transition in (134)Cs and the 661.7-keV M4 transition in (137)Ba. We here report a measurement of the 165.9-keV M1 transition in (139)La...

Nica, N.; Hardy, John C.; Iacob, V. E.; Balonek, C.; Trzhaskovskaya, M. B.

2008-01-01T23:59:59.000Z

282

CS1428 : Honors Assignment 0: Algorithms in Real Life and Hello World  

E-Print Network [OSTI]

CS1428 : Honors Assignment 0: Algorithms in Real Life and Hello World 100 Points Due: Friday, Sep 6. The write-up does not need to be elaborate (1 page is sufficient). 2 Hello World Description For part two of this assginment you will write the hello world program in C++. This program has traditionally been the first

Qasem, Apan - Department of Computer Science, Texas State University

283

Tests of Cs-137 removal from DWPF samples prior to analysis  

SciTech Connect (OSTI)

The Defense Waste Processing Facility (DWPF) will be used to encapsulate high-level radioactive waste into borosilicate glass at the Savannah River Site. To ensure that the process streams will be blended in the right proportions to produce durable glass, process control analyses will be performed in a laboratory in the DWPF. The high radioactivity of DWPF samples will require that sample preparation, including dissolution and dilution of samples, be performed in shielded cells. However the final analyses will be made with instruments and spectrometers contained in unshielded fume hoods. The primary radiation concern is the exposure to y-rays from the decay of Cs-137 after samples are removed from the shielded cells. Since there are several methods available for removing Cs-137 from samples, investigations were made into removing Cs-137 from DWPF samples prior to analysis in order to reduce worker exposure. Results are presented of the efficiency of various Cs-137 removal techniques and the effects of these techniques on analytical precision and accuracy.

Dewberry, R.A.; Coleman, C.J.

1994-11-10T23:59:59.000Z

284

Fractals with turtle graphics: a CS2 programming exercise for introducing recursion  

Science Journals Connector (OSTI)

This paper describes a programming exercise developed and used in CS2 classes to help introduce recursive programming. Providing a set of primitives which comprise a graphics system allows the students to focus on top down design and the nature of recursion, ...

Ivan B. Liss; Thomas C. McMillan

1987-02-01T23:59:59.000Z

285

Here, There and Everywhere On the Recurring Use of Turtle Graphics in CS1  

E-Print Network [OSTI]

Here, There and Everywhere ­ On the Recurring Use of Turtle Graphics in CS1 Michael E. Caspersen implements a virtual drawing machine--the turtle machine. The turtle ma- chine is well-known for giving present our experiences with resurrecting the Logo turtle in a new object-oriented way and using

Christensen, Henrik Bærbak

286

Secure Systems Editor: S.W. Smith, sws@cs.dartmouth.edu  

E-Print Network [OSTI]

Secure Systems Editor: S.W. Smith, sws@cs.dartmouth.edu side of the picture--the computers which we train students, young and old, to be effective cyber-citizens; and the media coverage or produce more effective tailors. S.W. SMITH Dartmouth College T oalargeextent,computingsystemsareu

Smith, Sean W.

287

Hierarchy of formal descriptions for architectural analysis and design of complex CS  

Science Journals Connector (OSTI)

Traditionally, in the CS design process, it is considered more important to formalize the functionality of the system, while the system's environment plays a secondary role. From our point of view, a formalized representation of the system functionality ... Keywords: architectural analysis support, concept development, hierarchical formalization, simulation modeling approach

A. Kurkovsky

2007-09-01T23:59:59.000Z

288

? + Residual polarization in water, CS2, C6F6 and hydrocarbons under strong decoupling fields  

Science Journals Connector (OSTI)

The? + decay asymmetry was measured as a function of longitudinal magnetic field (LF) between zero and 10 kG in spin decoupling experiments on muons in water, c-hexane, CS2, C6F6, C6H6 etc. The re...

Y. Miyake; Y. Tabata; Y. Ito; K. Ishida; T. Matsuzaki…

1984-01-01T23:59:59.000Z

289

Superhydrophilic TiO2 surface without photocatalytic activation  

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

Superhydrophilic TiO2 surface without photocatalytic activation Superhydrophilic TiO2 surface without photocatalytic activation Title Superhydrophilic TiO2 surface without photocatalytic activation Publication Type Journal Article Year of Publication 2010 Authors Zormpa, Vasileia, Xiaobo Chen, and Samuel S. Mao Journal Applied Physics Letter Volume 96 Issue 9 Date Published 12/2009 Abstract Since the discovery of extreme surface wetting phenomenon induced by ultraviolet photocatalysis, TiO2 has become the material of choice for environmental friendly applications such as self-cleaning coatings. Nevertheless, it remains a significant challenge to realize surfaces exhibiting persistent superhydrophilicity but without the need of external stimuli. We report a bioinspired TiO2 nanostructure that shows extreme superhydrophilicity without the need of light activation, and with stability against successive wetting-dewetting cycles. This ultimate TiO2 wetting surface exhibits high transmittance from near ultraviolet to the infrared, thus enabling practical antifogging technologies where transparency is critical.

290

Weldability and toughness assessment of Ti-microalloyed offshore steel  

SciTech Connect (OSTI)

The present study has been carried out to investigate the coarse-grained heat-affected zone (CGHAZ) microstructure and crack tip opening displacement (CTOD) toughness of grade StE 355 Ti-microalloyed offshore steels. Three parent plates (40-mm thick) were studied, two of which had Ti microalloying with either Nb + V or Nb also present. As a third steel, conventional StE 355 steel without Ti addition was welded for comparison purposes. Multipass tandem submerged arc weld (SAW) and manual metal arc weld (SMAW) welds were produced. Different heat-affected zone (HAZ) microstructures were simulated to ascertain the detrimental effect of welding on toughness. All HAZ microstructures were examined using optical and electron microscopy. It can be concluded that Ti addition with appropriate steel processing, which disperses fine TiN precipitates uniformly, with a fine balance of other microalloying elements and with a Ti/N weight ratio of about 2.2, is beneficial for HAZ properties of StE 355 grade steel.

Rak, I.; Gliha, V. [Univ. of Maribor (Slovenia). Faculty of Mechanical Engineering; Kocak, M. [GKSS Research Center Geesthacht (Germany)

1997-01-01T23:59:59.000Z

291

An X-Ray Fluorescence Study on the Segregation of Cs and I in and Inverted Organic Solar Cell  

SciTech Connect (OSTI)

X-ray near-total-reflection fluorescence reveals that in multilayers of the inverted organic solar cell (ITO/CsI/P3HT:PCBM-based) Cs diffuses into the organic layer and iodide diffuses into the ITO. Laser ablation inductively coupled plasma mass spectrometry measurements, which integrate elemental concentration across the whole multilayer structure, indicate that the Cs:I ratio remains 1:1 confirming there is no loss of iodine from the sample. Iodide diffusion to the bulk ITO layer is also found in a similarly prepared ITO/NaI/P3HT:PCBM multilayer structure. Our results are consistent with recent XPS measurements which show that the Cs:I ratio at the ITO/CsI surface exceeds 8:1, and rationalize this observation.

Lindemann, William R. [Ames Laboratory; Xiao, Teng [Ames Laboratory; Wang, Wenjie [Ames Laboratory; Berry, Jonna E. [Ames Laboratory; Anderson, Nathaniel A. [Ames Laboratory; Houk, Robert S. [Ames Laboratory; Shinar, Ruth [Ames Laboratory; Shinar, Joseph [Ames Laboratory; Vaknin, David [Ames Laboratory

2013-10-08T23:59:59.000Z

292

Shape memory behavior of ultrafine grained NiTi and TiNiPd shape memory alloys  

E-Print Network [OSTI]

The cyclic instability in shape memory characteristics of NiTi-based shape memory alloys (SMAs), such as transformation temperatures, transformation and irrecoverable strains and transformation hysteresis upon thermal and mechanical cycling limits...

Kockar, Benat

2009-05-15T23:59:59.000Z

293

Laser Cladding of TiAl Intermetallic Alloy on Ti6Al4V -Process Optimization and Properties  

Science Journals Connector (OSTI)

Abstract In order to improve Ti6Al4V high-temperature resistance and its tribological properties, the deposition of TiAl intermetallic (Ti-48Al-2Cr-2Nb) coating on a Ti6Al4V substrate by coaxial laser cladding has been investigated. Laser cladding by powder injection is an emerging laser material processing technique that allows the deposition of thick protective coatings on substrates,using a high power laser beam as heat source. Laser cladding is a multiple-parameter-dependent process. The main process parameters involved (laser power, powder feeding rate, scanning speed and preheating temperature) has been optimized. The microstructure and geometrical quantities (clad area and dilution) of the coating was characterized by optical microscopy and scanning electron microscopy (SEM). In addition the cooling rate of the clad during the process was measured by a dual-color pyrometer. This result has been related to defectology and mechanical coating properties.

B. Cárcel; A. Serrano; J. Zambrano; V. Amigó; A.C. Cárcel

2014-01-01T23:59:59.000Z

294

Half-metallic ferromagnetism in full-Heusler compounds ACaX{sub 2} (A = K and Rb; X = N and O)  

SciTech Connect (OSTI)

Electronic structure and magnetic properties of hypothetical ACaX{sub 2} (A = K and Rb; X= N and O) compounds in full-Heusler phase have been investigated based on density functional theory (DFT) within the local density approximation (LDA). The electronic band structures and density of states of these compounds show that the spin-down electrons have metallic, and the spin-up electrons have a semi conducting gap resulting in stable half-metallic ferromagnetic behaviour. The strong spin polarization of 2p states of N and O atoms is found to be the origin of ferromagnetism which results in a total magnetic moment of 3{sub ?B} and 1{sub ?B} respectively.

Umamaheswari, R., E-mail: g-kalpa@yahoo.com; Vijayalakshmi, D., E-mail: g-kalpa@yahoo.com; Yogeswari, M., E-mail: g-kalpa@yahoo.com; Kalpana, G., E-mail: g-kalpa@yahoo.com [Department of Physics, Anna University - Chennai, Sardar Patel Road, Guindy, Chennai - 600025 (India)

2014-04-24T23:59:59.000Z

295

The energy band structure of A{sub x}Fe{sub 2}Se{sub 2} (A = K, Rb) superconductors  

SciTech Connect (OSTI)

We study the band structure of antiferromagnetic A{sub x}Fe{sub 2}Se{sub 2} (A = K, Rb) superconductors by using first-principles electronic structure calculations which is density functional theory. In the vicinity of iron-vacancy, we identify the valence electrons of A{sub x}Fe{sub 2}Se{sub 2} will be filled up to the Fermi level and no semiconducting gap is observed. Hence, the A{sub x}Fe{sub 2}Se{sub 2} is a metallic instead of semiconducting which leads to superconductivity in the orbital-selective Mott phase. Similarly, there is non-vanishing density of states at the Fermi level.

Zabidi, Noriza A. [Physics Department, Centre for Defence Foundation Studies, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur 59200 (Malaysia); Azhan, Muhd. Z. [Defence Science Department, Faculty of Defence Science and Technology, Universiti Pertahanan Nasional Malaysia, Kuala Lumpur 59200 (Malaysia); Rosli, A. N. [Faculty of Science and Technology, Universiti Sains Islam Malaysia, Nilai 71800, Negeri Sembilan (Malaysia); Shrivastava, Keshav N. [School of Physics, University of Hyderabad, Hyderabad 500046 (India)

2014-03-05T23:59:59.000Z

296

Rb-Sr, Sm-Nd and Lu-Hf isotope systematics of the lunar Mg-suite: the age of the lunar crust and its relation to the time of Moon formation  

Science Journals Connector (OSTI)

...4 b.y.-old clast in Boulder 7, Apollo 17: a comprehensive...from the Apollo 17 Station 7 boulder and implications for its formation...Rb-Sr systematics of Apollo 17 boulder 7 from the North Massif of...high-Mg alkalic magmas and flood basalts. Geochem. Geophys...

2014-01-01T23:59:59.000Z

297

Investigation of the reaction zone between TiAl and Mo  

SciTech Connect (OSTI)

Pure Mo was incorporated in TiAl matrix via two different routes: (1) hot pressing of alternately sandwiched Ti-Al sheets and Mo foils; and (2) coextrusion and heat treatment of Ti-Al green compact and Mo rod. The reaction zone between TiAl and Mo is found to contain two intermetallic phases: {beta}-(Mo,Ti)Al and {rho}-(Mo,Ti){sub 3}Al. The {beta}-{rho} boundary is incoherent, whereas the TiAl-{beta} and {rho}-Mo boundaries are semicoherent. The reaction zone grows with increasing heat-treatment time in a parabolic form. The incorporated Mo exhibits lower hardness than the TiAl matrix, implying that ductilizing and toughening of TiAl by introducing Mo as a ductile reinforcement are possible.

Hsu, F.Y.; Klaar, H.J. [Aachen Univ. of Technology (Germany); Wang, G.X. [Zhejiang Univ., Hangzhou (China). Dept. of Materials Science and Engineering; Pirwitz, F. [GKSS Research Center, Geesthacht (Germany). Inst. for Materials Research

1996-08-01T23:59:59.000Z

298

Ion-pairing in aqueous CaCl2 and RbBr solutions: simultaneous structural refinement of XAFS and XRD data  

SciTech Connect (OSTI)

We present a new methodology involving the simultaneous refinement of both x-ray absorption and x-ray diffraction spectra (X-ray Absorption/Diffraction Structural Refinement,XADSR), to study hydration and ion pair structure of CaCl2 and RbBr salts in concentrated aqueous solutions. The XADSR analysis includes the XAFS spectra analysis of both the cation and anion as a probe of their short-range structure with an XRD spectral analysis as a probe of the global structural. Together they deliver a comprehensive picture of the cation and anion hydration, the contact ion pair (CIP) structure and the solvent-separated ion pair (SSIP) structure. XADSR analysis of 6.0 m aqueous CaCl2 reveals that there are an insignificant number of Ca2+-Cl- CIP’s, but there are approximately 3.4 SSIP’s separated by about 4.99 Ĺ. In contrast XADSR analysis of aqueous RbBr yields about 0.7 pair CIP at a bond length 3.51 Ĺ. The present work demonstrates a new approach for a direct co-refinement of XRD and XAFS spectra in a simple and reliable fashion, opening new opportunities for analysis in various disordered and crystalline systems. This work was supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences. Pacific Northwest National Laboratory (PNNL) is operated for the U.S. Department of Energy by Battelle.

Pham, Thai V.; Fulton, John L.

2013-01-28T23:59:59.000Z

299

Enviromental influences on the {sup 137}Cs kinetics of the yellow-bellied turtle (Trachemys Scripta)  

SciTech Connect (OSTI)

Assessments of ecological risk require accurate predictions of contaminant dynamics in natural populations. However, simple deterministic models that assume constant uptake rates and elimination fractions may compromise both their ecological realism and their general application to animals with variable metabolism or diets. In particular, the temperature-dependent model of metabolic rates characteristic of ectotherms may lead to significant differences between observed and predicted contaminant kinetics. We examined the influence of a seasonally variable thermal environment on predicting the uptake and annual cycling of contaminants by ectotherms, using a temperature-dependent model of {sup 137}Cs kinetics in free-living yellow-bellied turtles, Trachemys scripta. We compared predictions from this model with those of deterministics negative exponential and flexibly shaped Richards sigmoidal models. Concentrations of {sup 137}Cs in a population if this species in Pond B, a radionuclide-contaminated nuclear reactor cooling reservoir, and {sup 137}Cs uptake by the uncontaminated turtles held captive in Pond B for 4 yr confirmed both the pattern of uptake and the equilibrium concentrations predicted by the temperature-dependent model. Almost 90% of the variance on the predicted time-integrated {sup 137}Cs concentration was explainable by linear relationships with model paramaters. The model was also relatively insensitive to uncertainties in the estimates of ambient temperature, suggesting that adequate estimates of temperature-dependent ingestion and elimination may require relatively few measurements of ambient conditions at sites of interest. Analyses of Richards sigmoidal models of {sup 137}Cs uptake indicated significant differences from a negative exponential trajectory in the 1st yr after the turtles` release into Pond B. 76 refs., 7 figs., 5 tabs.

Peters, E.L. [Colorado State Univ., Fort Collins, CO (United States); Brisbin, L.I. Jr. [Savannah River Ecology Laboratory, Aiken, SC (United States)

1996-02-01T23:59:59.000Z

300

The Allende meteorite: evidence for a new cosmothermometer based on Ti3+/Ti4+  

Science Journals Connector (OSTI)

... 1,765 Perovskite CaTiO3 1,647 1,393 Melilite Ca2Al2SiO7- 1,625 1,450 Ca2MgSi2O7 Spinel MgAl2O4 1,513 1,362 Metallic iron Fe(Fe-Ni) 1,473 Diopside CaMgSi2O6 ... rhonite and fassaite compositions are for rhonites that have decomposed to fassaite + perovskite + spinel. Open circles represent intra-crystalline fassaites. The dashed line marked ALL-4 is the ...

Stephen E. Haggerty

1978-11-16T23:59:59.000Z

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


301

Visible-Light Responsive Photocatalytic Fuel Cell Based on Ag/TiO2-NTs Photoanode and Cu2O/TiO2 Photocathode for Simultaneous Wastewater Treatment and Electricity Generation  

Science Journals Connector (OSTI)

A visible-light driven photocatalytic fuel cell (PFC) system comprised of Ag/TiO2-NTs photoanode and Cu2O/TiO2/Ti photocathode was established for providing a self-sustained and...

Liao, Wenjuan

302

Magneto-transport in LaTi{sub 1?x}Mn{sub x}O{sub 3}/SrTiO{sub 3} oxide heterostructures  

SciTech Connect (OSTI)

We report the growth of ultrathin film of Mn doped LaTiO{sub 3} on TiO{sub 2} terminated SrTiO{sub 3} (001) substrate by pulsed laser deposition (PLD) and their electrical transport characteristics including magnetoresistance (MR). Though the replacement of Mn in LaTiO{sub 3} at the Ti site in dilute limit does not affect the metallic behaviour of films but variation in resistance is observed. Normalised resistance behaviour is explained on the basis of variation in charge carriers and increased interaction between Mn atoms in the system under investigation.

Kumar, Pramod, E-mail: pramodnpl2011@gmail.com; Dogra, Anjana, E-mail: pramodnpl2011@gmail.com; Budhani, R. C., E-mail: pramodnpl2011@gmail.com [Quantum Phenomena and Applications Division, National Physical Laboratory (CSIR), Dr. K.S. Krishnan Marg, New Delhi-110012 (India)

2014-04-24T23:59:59.000Z

303

Hexaferrite M (Co, Ti) magnetic properties optimization  

SciTech Connect (OSTI)

Barium hexaferrites are anisotropic iron oxides which can present high values of permeability. We have studied Ba (Co, Ti){sub x}Fe{sub 12-2x}O{sub 19} compositions. Powders are synthesized using the ceramic method: stoichiometric amounts of basic components are ground and fired at high temperature (1170{degrees}C) to obtain the desired phase. The powders are then ground for 6 hours in order to reduce the particle size. The slurry is cast in a plaster matrix. This matrix is rotated between the poles of a stationary electromagnet. Fields of approximately 500 Oe are used for the orientation procedure. Samples are then sintered for different temperatures between 1200 and 1300{degrees}C. We present results (magnetization, permeability, permittivity, orientation rate) obtained for diverse compositions (1.1

Autissier, D.; Rousselle, D.; Podembski, A. [CEA-DAM, Bruyeres-le-Chatel (France)

1995-09-01T23:59:59.000Z

304

Correlation between Microstructure and Mechanical Properties of TiC Films Produced by Vacuum arc Deposition and Reactive Magnetron Sputtering  

E-Print Network [OSTI]

and mechanical properties of TiC films produced by vacuumstudied the synthesis of TiC films by vacuum arc depositionproduced a broad range of TiC x film compositions. In both

Monteiro, O.R.; Delplancke-Ogletree, M.P.; Winand, R.; Brown, I.G.

1999-01-01T23:59:59.000Z

305

The Influence of Ni-Coated TiC on Laser-Deposited IN625 Metal Matrix Composites  

E-Print Network [OSTI]

The In?uence of Ni-Coated TiC on Laser-Deposited IN625 Metalwith Ni-coated and uncoated TiC reinforcement particles toand spatial distribution of TiC particles in the deposited

2010-01-01T23:59:59.000Z

306

Role of Cs on Hydrodesulfurization Activity of RuS2 Catalysts Supported on a Mesoporous SBA-15 Type Material  

Science Journals Connector (OSTI)

Role of Cs on Hydrodesulfurization Activity of RuS2 Catalysts Supported on a Mesoporous SBA-15 Type Material ... Ruthenium(III) chloride, RuCl3·nH2O (? 41 wt % Ru, from Fluka); cesium hydroxide, CsOH (50 wt % solution, from Aldrich); and cesium chloride, CsCl (99.9% from Aldrich) were employed as ruthenium and cesium precursor salts, respectively. ... These liquid samples were kept in sealed vials and subsequently analyzed by gas chromatography (Shimadzu GC-14B, equipped with a flame ionization detector and a capillary column, TBR-14, coupled to an automatic Shimadzu AOC-20i injector). ...

A. Infantes-Molina; A. Romero-Pe?rez; V. Sa?nchez-Gonza?lez; B. Pawelec; J. L.G. Fierro; A. Jime?nez-Lo?pez; E. Rodri?guez-Castello?n

2011-02-03T23:59:59.000Z

307

Adsorption properties of Cs{sup +} for composite adsorbents and their irradiation stabilities  

SciTech Connect (OSTI)

Novel composite adsorbents using impregnation-precipitation methods have been developed; these fine crystals are loaded in the macro-pores of porous silica gels and zeolites. The 2 following composite adsorbents: KCoFC-NM (NM: natural mordenite, 0.4-1.0 mm), KCoFC-SG (SG: porous silica gel, NH and Q-10)) were prepared by impregnation-precipitation methods. This article presents the results of tests about their characterization, their selective adsorption ability of Cs{sup 137} and their irradiation stability. It is shown that the KCoFC-SG and KCoFC-NM composites are thus efficient for the selective separation of Cs{sup 137} in low-level radioactive waste (LLW) containing highly concentrated sodium nitrate.

Susa, Shunsuke; Mimura, Hitoshi [Tohoku University, Aramaki-Aza-Aoba 6-6, Aoba-ku, Sendai, Miyagi 980-8579 (Japan); Ito, Yoshiyuki; Saito, Yasuo [Japan Atomic Energy Agency, Muramatsu 4-33, Tokai-mura, Naka-gun, Ibaraki 319-1194 (Japan)

2013-07-01T23:59:59.000Z

308

Determination of fallout 137Cs and naturally occuring gamma-ray emitters in sediments  

Science Journals Connector (OSTI)

With the advent of the nuclear age, a number of radionuclides were introduced into Man's natural radiation environment. Two of these radionuclides, cesium-137 and strontium-90, are of particular interest because of their long half lives and biological importance. Research at the U.S.D.A. Sedimentation Laboratory is being conducted on the movement and redistribution of 137Cs and the naturally occuring gamma-ray emitting radionuclides, thorium, uranium and potassium, in relation to cultural and erosional processes within watersheds. (1,2) This technical note describes the methods used at the U.S.D.A. Sedimentation Laboratory to determine137Cs and the naturally occurring gamma-ray emitters in sediments.

Jerry C. Ritchie; J.R. McHenry

1973-01-01T23:59:59.000Z

309

Determination of prescription dose for Cs-131 permanent implants using the BED formalism including resensitization correction  

SciTech Connect (OSTI)

Purpose: The current widely used biological equivalent dose (BED) formalism for permanent implants is based on the linear-quadratic model that includes cell repair and repopulation but not resensitization (redistribution and reoxygenation). The authors propose a BED formalism that includes all the four biological effects (4Rs), and the authors propose how it can be used to calculate appropriate prescription doses for permanent implants with Cs-131. Methods: A resensitization correction was added to the BED calculation for permanent implants to account for 4Rs. Using the same BED, the prescription doses with Au-198, I-125, and Pd-103 were converted to the isoeffective Cs-131 prescription doses. The conversion factor F, ratio of the Cs-131 dose to the equivalent dose with the other reference isotope (F{sub r}: with resensitization, F{sub n}: without resensitization), was thus derived and used for actual prescription. Different values of biological parameters such as ?, ?, and relative biological effectiveness for different types of tumors were used for the calculation. Results: Prescription doses with I-125, Pd-103, and Au-198 ranging from 10 to 160 Gy were converted into prescription doses with Cs-131. The difference in dose conversion factors with (F{sub r}) and without (F{sub n}) resensitization was significant but varied with different isotopes and different types of tumors. The conversion factors also varied with different doses. For I-125, the average values of F{sub r}/F{sub n} were 0.51/0.46, for fast growing tumors, and 0.88/0.77 for slow growing tumors. For Pd-103, the average values of F{sub r}/F{sub n} were 1.25/1.15 for fast growing tumors, and 1.28/1.22 for slow growing tumors. For Au-198, the average values of F{sub r}/F{sub n} were 1.08/1.25 for fast growing tumors, and 1.00/1.06 for slow growing tumors. Using the biological parameters for the HeLa/C4-I cells, the averaged value of F{sub r} was 1.07/1.11 (rounded to 1.1), and the averaged value of F{sub n} was 1.75/1.18. F{sub r} of 1.1 has been applied to gynecological cancer implants with expected acute reactions and outcomes as expected based on extensive experience with permanent implants. The calculation also gave the average Cs-131 dose of 126 Gy converted from the I-125 dose of 144 Gy for prostate implants. Conclusions: Inclusion of an allowance for resensitization led to significant dose corrections for Cs-131 permanent implants, and should be applied to prescription dose calculation. The adjustment of the Cs-131 prescription doses with resensitization correction for gynecological permanent implants was consistent with clinical experience and observations. However, the Cs-131 prescription doses converted from other implant doses can be further adjusted based on new experimental results, clinical observations, and clinical outcomes.

Luo, Wei, E-mail: wei.luo@uky.edu; Molloy, Janelle; Aryal, Prakash; Feddock, Jonathan; Randall, Marcus [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky 40536 (United States)] [Department of Radiation Medicine, University of Kentucky, Lexington, Kentucky 40536 (United States)

2014-02-15T23:59:59.000Z

310

E-Print Network 3.0 - akot ti alloy Sample Search Results  

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

666670 Phase transformation and precipitation in aged TiNiHf Summary: in aged Ti-Ni-Hf high-temperature shape memory alloys X.L. Meng, W. Cai, Y.F. Zheng, L.C. Zhao...

311

The Synthesis of Ag-Doped Mesoporous TiO2 . | EMSL  

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

The Synthesis of Ag-Doped Mesoporous TiO2 . The Synthesis of Ag-Doped Mesoporous TiO2 . Abstract: Ag-doped mesoporous titanium oxide was prepared using non-ionic surfactants and...

312

The Synthesis of Cadmium Doped Mesoporous TiO2. | EMSL  

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

The Synthesis of Cadmium Doped Mesoporous TiO2. The Synthesis of Cadmium Doped Mesoporous TiO2. Abstract: Cd doped mesoporous titanium oxide was prepared using non-ionic...

313

Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO(110...  

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

Ferromagnetic Cr-doped TiO(110) Rutile Single Crystals using Ion Implantation. Synthesis of Room-Temperature Ferromagnetic Cr-doped TiO(110) Rutile Single Crystals using Ion...

314

Self-assembled TiO2-Graphene Hybrid Nanostructures for Enhanced...  

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

TiO2-Graphene Hybrid Nanostructures for Enhanced Li-ion Insertion . Self-assembled TiO2-Graphene Hybrid Nanostructures for Enhanced Li-ion Insertion . Abstract: We used anionic...

315

Thermal stability and oxidation resistance of TiCrAlYO coatings...  

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

stability and oxidation resistance of TiCrAlYO coatings on SS430 for solid oxide fuel cell interconnect applications. Thermal stability and oxidation resistance of TiCrAlYO...

316

NICKEL-FREE Fe-12Mn-0.2Ti ALLOY STEEL FOR CRYOGENIC APPLICATIONS  

E-Print Network [OSTI]

O. 2Ti ALLOY STEEL FOR CRYOGENIC APPLICATIONS S'. Hwang, S.0.2Ti ALLOY STEEL FOR CRYOGENIC APPLICATIONS by S. Hwang, S.was investigated for cryogenic applications. The systematic

Hwang, S.

2010-01-01T23:59:59.000Z

317

Formaldehyde Polymerization on (WO3)3/TiO2(110) Model Catalyst...  

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

Formaldehyde Polymerization on (WO3)3TiO2(110) Model Catalyst. Formaldehyde Polymerization on (WO3)3TiO2(110) Model Catalyst. Abstract: Polymerization of formaldehyde, H2CO, was...

318

Irradiation behavior of SrTiO3 at temperatures close to the critical...  

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

for amorphization. Abstract: Damage accumulation on both the Sr and Ti sublattices in strontium titanate (SrTiO3) has been investigated under 1.0 MeV Au+ irradiation at 360 and 400...

319

Structure, magnetic properties and magnetoelastic anisotropy in epitaxial Sr(Ti???Co?)O? films  

E-Print Network [OSTI]

We report the structure, magnetic properties and magnetoelastic anisotropy of epitaxial Sr(Ti???Co?)O? films grown on LaAlO? (001) and SrTiO? (001) substrates by pulsed laser deposition. Room temperature ferromagnetism was ...

Bi, Lei

320

Imaging Adsorbate O-H Bond Cleavage: Methanol on TiO2(110). ...  

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

Adsorbate O-H Bond Cleavage: Methanol on TiO2(110). Imaging Adsorbate O-H Bond Cleavage: Methanol on TiO2(110). Abstract: We investigated methanol adsorption and dissociation on...

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


321

BaTiO? based materials for piezoelectric and electro-optic applications  

E-Print Network [OSTI]

Ferroelectric materials are key to many modem technologies, in particular piezoelectric actuators and electro-optic modulators. BaTiO? is one of the most extensively studied ferroelectric materials. The use of BaTiO? for ...

Avrahami, Ytshak, 1969-

2003-01-01T23:59:59.000Z

322

Co-doped Anatase TiO Heteroepitaxy on Si(001). | EMSL  

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

layer, followed by deposition of a thin SrTiO&8323; buffer layer. Using ˝ ML Sr metal to form the silicide allowed the deposition of 10 ML SrTiO&8323; without oxidation...

323

Phase constitution, Mechanical Property and Corrosion Resistance of the Ti-Nb Alloys  

E-Print Network [OSTI]

the Ti-Ni alloy in the dental application. In the non-oral condition, the Ti-52Nb alloy may be preferable, dentistry and interventional radiology because of their superior shape memory effect and superelasticity [1

Zheng, Yufeng

324

E-Print Network 3.0 - ar ti cr Sample Search Results  

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

Cu films were deposited on a steel substrate with thickness range of 200 - 2000... of TiC14, N2, HZ and Ar a t 520'C. The adhesion strength of TiN films was investigated by...

325

Scanning tunneling microscopy investigation of the TiO2 anatase ,,101... surface Wilhelm Hebenstreit,1  

E-Print Network [OSTI]

of tunneling sites in STM. Titanium dioxide (TiO2) is a versatile material that finds uses as a promoter. Fourfold-coordinated Ti atoms at step edges are preferred adsorption sites and allow the identification

Diebold, Ulrike

326

Design, optimization, and applications of few-cycle Ti:Sapphire lasers  

E-Print Network [OSTI]

Ti:Sapphire mode-locked lasers are a unique technology that enables a wide variety of applications. Owing to the ultrabroadband nature of the Ti:sapphire crystal and the invention of precisely engineered dispersion-compensating ...

880-01 Chen, Li jin

2012-01-01T23:59:59.000Z

327

Thermodynamics of the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4...  

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

the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4) Solid Solution. Thermodynamics of the Magnetite-Ulvöspinel (Fe3O4-Fe2TiO4) Solid Solution. Abstract: The thermodynamics of mixing...

328

TiO2 Nanoparticles as a Soft X-ray Molecular Probe  

E-Print Network [OSTI]

Figure 1. TEM image of PAA coated TiO 2 nanoparticles .TOPO with polyacrylic acid (PAA) . Preparation of TiO 2 -TOPO with polyacrylic acid (PAA) 2 . A solution of 0.1 g PAA

Ashcroft, Jared M.

2008-01-01T23:59:59.000Z

329

Growth of Cr-doped TiO Films in the Rutile and Anatase Structures...  

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

of Cr-doped TiO Films in the Rutile and Anatase Structures by Oxygen Plasma Assisted Molecular Beam Epitaxy . Growth of Cr-doped TiO Films in the Rutile and Anatase Structures by...

330

Chemical Reactivity of Reduced TiO2(110): The dominant role of...  

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

Reactivity of Reduced TiO2(110): The dominant role of surface defects in oxygen chemisorption. Chemical Reactivity of Reduced TiO2(110): The dominant role of surface defects in...

331

Acetone Chemistry on Oxidized and Reduced TiO2(110). | EMSL  

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

Acetone Chemistry on Oxidized and Reduced TiO2(110). Acetone Chemistry on Oxidized and Reduced TiO2(110). Abstract: The chemistry of acetone on the oxidized and reduced surfaces of...

332

Methylene Bromide Chemistry and Photochemistry on Rutile TiO2...  

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

Methylene Bromide Chemistry and Photochemistry on Rutile TiO2(110). Methylene Bromide Chemistry and Photochemistry on Rutile TiO2(110). Abstract: The chemistry and photochemistry...

333

Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl...  

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

Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl Substituents on Reactivity and Selectivity. Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl Substituents...

334

Surface Chemistry of 2-Propanol on TiO2(110): Low and High Temperature...  

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

Chemistry of 2-Propanol on TiO2(110): Low and High Temperature Dehydration, Isotope Effects, and Influence of Local Surface Chemistry of 2-Propanol on TiO2(110): Low and High...

335

Role of polaron hopping in leakage current behavior of a SrTiO3 ...  

E-Print Network [OSTI]

Dec 10, 2013 ... zirconate titanite (PZT), strontium titanite (SrTiO3), and bar- ium titanite (BaTiO3), have been widely utilized in various electronic devices such ...

2014-03-14T23:59:59.000Z

336

Vol. 40 No. 5 May 1999 Near Fine Grain Parallel Processing  

E-Print Network [OSTI]

2. 18) 20)16) 12)13) OSCAR Fortran 19) 2.1 For- tran BPA RB SB MT 16) BPA BPA BPA BPA RB Doall Doall Doall RB SB SB Doall RB 21) MT BPA RB SB MT MFG 20)22) MFG MT 20)22) MTG 20)22) MT PC 2.2 PC MT Doall RB RB PC PE 2.3 12)13) PC MT BPA PC PE 1 OSCAR 2 2 i PE ti Ni Nj Ti Tj Ti Tj PE tij 2 #12;Vol. 40 No. 5

Kasahara, Hironori

337

137Cs in Urine of Tourists Who Visited Kiev Late in April, 1986. —Estimation of the Intake of 137Cs and 239Pu: Due to the Nuclear Reactor Accident—  

Science Journals Connector (OSTI)

......Urine of Tourists Who Visited Kiev Late in April, 1986. -Estimation of the Intake of 137Cs and 239Pu: Due to the Nuclear Reactor Accident- Teruhisa Watabe Kohki Sugawara * Division of Radioecology, Laboratory for Radioecology, Isozaki 3609......

Teruhisa Watabe; Kohki Sugawara

1987-06-01T23:59:59.000Z

338

Geometric and electronic properties of Cs structures on III-V (110) surfaces: From 1D and 2D insulators to 3D metals  

Science Journals Connector (OSTI)

We report the structural and electronic properties of Cs adsorbed on room-temperature GaAs and InSb (110) surfaces as observed with scanning tunneling microscopy. Cs initially forms long one-dimensional (1D) zigzag chains on both surfaces. Additional Cs adsorption on GaAs(110) results in the formation of a 2D overlayer consisting of five-atom Cs polygons arranged in c(4×4) superlattice. The tunneling gap measured over these insulating structures narrows with the transition from 1D to 2D, with metallic characteristics observed following saturation with a second Cs overlayer.

L. J. Whitman; Joseph A. Stroscio; R. A. Dragoset; R. J. Celotta

1991-03-11T23:59:59.000Z

339

Chernobyl {sup 137}Cs used to determine sediment accretion rates at selected northern European coastal wetlands  

SciTech Connect (OSTI)

Sediment cores were collected form five coastal wetlands along the North Sea (England and Netherlands) and Baltic Sea (Poland). {sup 137}Cs dating was used to assess sediment accretion rates, including rates based on the {sup 137}Cs peak from the 1986 accident at Chernobyl. Peaks form the Chernobyl fallout were found in cores from the Oder and Vistula Rivers in Poland, from the Eastern Scheldt in the Netherlands, and in one of the two cores from Stiffkey Marsh, UK. No evidence of Chernobyl fallout was found in cores from Dengie Marsh, UK. The Chernobyl {sup 137}Cs peak serves as an excellent marker for short-term accretion rates because of its high activity. Vertical accretion rates (cm yr{sup {minus}1}) based on 1963 and 1986 peaks were similar at most sites; differences may be due to large inputs of sediment from storms or recent accumulation of organic matter. Large differences in sediment characteristics and accretion rates were found between samples from Poland and western Europe. Vertical accretion rates over the period 1963-1986 ranged from 0.26 to 0.85 cm{sup {minus}1} and from 0.30 to 1.90 cm yr{sup {minus}1} over the 1986-1991 period. Vertical accretion rates for the period these sites are in imminent danger of excessive flooding. The Chernobyl {sup 137}Cs peak will be especially useful for studies of short-term (i.e. very recent) sedimentation in the near future and for comparisons of sediment processes over different time scales. 33 refs., 4 figs., 4 tabs.

Callaway, J.C.; DeLaune, R.D.; Patrick, W.H. Jr. [Louisiana State Univ., Baton Rouge, LA (United States)

1996-05-01T23:59:59.000Z

340

www.cs.virginia.edu Apr 1, 2009 -Apr 30, 2009  

E-Print Network [OSTI]

.virginia.edu / referral 873 5.32% images.google.com / referral 291 1.77% virginia.edu / referral 150 0.91% 1 Google (direct) ((none)) 7,519 45.83% google (organic) 5,795 35.32% seas.virginia.edu (referral) 873 5.32% images.google.com (referral) 291 1.77% virginia.edu (referral) 150 0.91% Keywords Visits % visits uva cs 166 2.68% uva

Robins, Gabriel

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


341

INTRODUCTION IFT3290 H2005 UDEM MIKL OS CS UR OS IFT 3290 HIVER 2005  

E-Print Network [OSTI]

«EGF receptor» au site Web de SWISS-PROT et suivez le lien vers EGFR HUMAN.) pleine d'information li´ee : e.g., structure 3D (www) (Suivez le lien «PDB» dans la ligne «HSSP».) S´equence MRPSGTAGAA-PROT INTRODUCTION IFT3290 H2005 UDEM MIKL ´OS CS UR ¨OS 7 ExPASy Home page Site Map Search ExPASy Contact us SWISS

Csürös, Miklós

342

Compton Profile Study of Intermetallic Ti{sub 3}Al  

SciTech Connect (OSTI)

The Compton scattering measurement on intermetallic alloy Ti{sub 3}Al is reported in this work. The measurement is made using 59.54 keV gamma-rays from Am{sup 241} source. Theoretical calculation of Compton profile is also performed employing CRYSTAL code within the framework of density functional theory to compare with the measurement. The theoretical profile of the alloy is also synthesized following the superposition model taking the published Compton profiles of elemental solids from the APW method. The experimental study of charge transfer in the alloys has also been done by performing the experimental Compton profile measurements on Ti and Al following the superposition model and charge transfer from Al to Ti is clearly seen on the alloy formation.

Vyas, V.; Sharma, G. [Department of Physics, Banasthali University, Banasthali-304022 (India); Mishra, M. C.; Sharma, B. K. [Department of Physics, University of Rajasthan, Jaipur-302004 (India); Joshi, K. B. [Department of Physics, University College of Science, M.L.Sukhadia University, Udaipur-313 002 (India)

2011-10-20T23:59:59.000Z

343

Evaluation of aqueous Na{sup +}/Cs{sup +} separation by electrodialysis  

SciTech Connect (OSTI)

In support of the Hanford Site cleanup, electrodialysis is being investigated as a method to separate aqueous sodium (Na{sup +}) and cesium (Cs{sup +}) ions. The approach has many advantages over existing separation technologies; in particular, electrodialysis creates little secondary waste while producing usable acid and base streams. The fundamentals of electrodialysis are presented in this report to provide a foundation for interpreting experimental data. A flat-plate laboratory-scale apparatus was used to determine the feasibility of separating Na{sup +}/Cs{sup +} mixtures by electrodialysis. The results showed that Cs{sup +} is preferentially separated over Na{sup +} by a factor of 2 to 3 using a Nafion{reg_sign} 417 cationic membrane. The separation is relatively insensitive to solution ionic strength and flow-rate variations. The current efficiency of the separation ranges from 0.60 to 0.65 depending on the applied voltage. The laboratory-scale system was characterized by dimensional analysis, which demonstrated that the process could be scaled up to a size attractive for the volume of waste at the Hanford Site. Preliminary experiments on a bench-scale system were also conducted. The initial results showed that the current-voltage response of the laboratory- and the bench-scale unit is identical.

Buehler, M.F.; Lawrence, W.E.; Norton, J.D.

1993-12-01T23:59:59.000Z

344

Calculations of parity-nonconserving s-d amplitudes in Cs, Fr, Ba+, and Ra+  

Science Journals Connector (OSTI)

We have performed ab initio mixed-states and sum-over-states calculations of parity-nonconserving (PNC) electric dipole (E1) transition amplitudes between s-d electron states of Cs, Fr, Ba+, and Ra+. For the lower states of these atoms we have also calculated energies, E1 transition amplitudes, and lifetimes. We have shown that PNC E1 amplitudes between s-d states can be calculated to high accuracy. Contrary to the Cs 6s-7s transition, in these transitions there are no strong cancellations between different terms in the sum-over-states approach. In fact, there is one dominating term which deviates from the sum by less than 20%. This term corresponds to an s-p1/2 weak matrix element, which can be calculated with an accuracy of better than 1%, and a p1/2-d3/2 E1 transition amplitude, which can be measured. Also, the s-d amplitudes are about four times larger than the corresponding s-s amplitudes. We have shown that by using a hybrid mixed-states–sum-over-states approach the accuracy of the calculations of PNC s-d amplitudes could compete with that of Cs 6s-7s if p1/2-d3/2 E1 amplitudes are measured to high accuracy.

V. A. Dzuba; V. V. Flambaum; J. S. M. Ginges

2001-05-08T23:59:59.000Z

345

Corrosion behavior of newly developed TiAgFe dental alloys in neutral saline solution  

E-Print Network [OSTI]

Corrosion behavior of newly developed Ti­Ag­Fe dental alloys in neutral saline solution B. B. Zhang, B. L. Wang, L. Li and Y. F. Zheng* The corrosion behavior of Ti­5Ag­xFe alloys (x ¼ 1, 2.5, 5 wt) Ti,Ti­ 5Ag­xFe alloys exhibited higher corrosion potentials, lower current densities, and larger

Zheng, Yufeng

346

Search for a light charged Higgs boson in the decay channel H^+  – > cŻs using the ATLAS detector.  

E-Print Network [OSTI]

??A search for a light charged Higgs boson (H^±) decaying into two jets (cŻs) using pp collisions at s = sqrt(7 TeV) is presented. A… (more)

Trifis, Omran

2013-01-01T23:59:59.000Z

347

The Seven Cs Ethical Model of Communication: Environmental Communication and Indigenous Knowledge Management Strategies in International Agricultural Development  

E-Print Network [OSTI]

for international organizations serving agricultural development. Conclusions for the 7Cs ethical model of communication offer perspective on the model as a discursive response to neoliberal policies and international development ethics....

McCann, Elisabeth

2012-10-19T23:59:59.000Z

348

CS 525: Advanced Database Organization Study of relational, semantic, and object-oriented data models and interfaces. Database management system  

E-Print Network [OSTI]

History of database management. Goals of database system development. Relational systems Data modelsCS 525: Advanced Database Organization Objectives Study of relational, semantic, and object-oriented data models and interfaces. Database management system techniques for query optimization, concurrency

Heller, Barbara

349

Yuening Hu, Jordan Boyd-Graber, Brianna Satinoff {ynhu, bsonrisa}@cs.umd.edu, jbg@umiacs.umd.edu  

E-Print Network [OSTI]

Yuening Hu, Jordan Boyd-Graber, Brianna Satinoff {ynhu, bsonrisa}@cs.umd.edu, jbg the words (Boyd-Graber et al., 2007) nasa shuttle space tea bagel god constitution president 19 #12

Boyd-Graber, Jordan

350

Optical and electrical characterization of the electron beam gun evaporated TiO2 lm  

E-Print Network [OSTI]

Optical and electrical characterization of the electron beam gun evaporated TiO2 ®lm V of TiO2 ®lms obtained by electron beam gun evaporation and annealed in an oxygen environment. A negative with TiO2 insulator ®lms deposited by electron beam gun evaporator. P-type Si wafers (1 0 0 orientation

Eisenstein, Gadi

351

Structure and Dynamics of CO2 on Rutile TiO2(110)-1×1....  

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

CO2 on Rutile TiO2(110)-1×1. Structure and Dynamics of CO2 on Rutile TiO2(110)-1×1. Abstract: Adsorption, binding, and diffusion of CO2 molecules on rutile TiO2(110)...

352

Site-Dependent Activity of Atomic Ti Catalysts in Al-Based Hydrogen Storage Materials  

E-Print Network [OSTI]

Site-Dependent Activity of Atomic Ti Catalysts in Al-Based Hydrogen Storage Materials Abdullah Al storage processes. Here we analyze the role of atomic Ti catalysts in the hydrogenation of Al-based hydrogen storage materials. We show that Ti atoms near the Al surface activate gas-phase H2, a key step

Ciobanu, Cristian

353

A UV light enhanced TiO2/graphene device for oxygen sensing at room temperature  

E-Print Network [OSTI]

A UV light enhanced TiO2/graphene device for oxygen sensing at room temperature Jia Zhang,ab Chao temperature oxygen sensor based on TiO2/graphene device was developed with an enhanced sensing performance­hole pairs in the TiO2 film and the photogenerated electrons were scavenged by graphene and percolated

Cao, Wenwu

354

Electron Source in Photoinduced Hydrogen Production on Pt-Supported TiO2 Particles  

Science Journals Connector (OSTI)

Electron Source in Photoinduced Hydrogen Production on Pt-Supported TiO2 Particles ... Comment on “Electron Source in Photoinduced Hydrogen Production on Pt-Supported TiO2 Particles” ... Comment on “Electron Source in Photoinduced Hydrogen Production on Pt-Supported TiO2 Particles” ...

Toshiyuki Abe; Eiji Suzuki; Kentaro Nagoshi; Kohichi Miyashita; Masao Kaneko:

2000-03-24T23:59:59.000Z

355

Textures and plastic anisotropy in gamma-TiAl  

SciTech Connect (OSTI)

Specimens of a Ti-36 wt pct Al alloy consisting primarily of gamma TiAl were deformed in compression at 450 C and in rolling at 1050 C. The textures of the deformed specimens were measured and analyzed in terms of orientation distribution functions. After hot rolling, the texture is strongly influenced by recrystallization and shows a cube-like component with an alignment of the c-axis with the transverse direction. The measured compression textures are compared with those simulated on the basis of the Taylor theory of polycrystal deformation. 36 refs.

Hartig, C.H.; Fang, X.F.; Mecking, H.; Dahms, M. (Hamburg, Technische Universitaet, (Germany) GKSS-Forschungszentrum Geesthacht GmbH, (Germany))

1992-08-01T23:59:59.000Z

356

Preparation, characterization and applications of novel carbon and nitrogen codoped TiO{sub 2} nanoparticles from annealing TiN under CO atmosphere  

SciTech Connect (OSTI)

Graphical abstract: Carbon and nitrogen codoped TiO{sub 2} nanoparticles were firstly fabricated by calcining TiN powder under CO atmosphere at different temperatures between 400 and 600 °C, both the improved photocatalytic activity for degradation of methylene blue and enhanced photovoltaic performance for dye sensitized solar cells were demonstrated. - Highlights: • CN-codoped TiO{sub 2} nanoparticles were prepared by calcining TiN under CO atmosphere. • More visible light response was confirmed by UV–vis DRS and photocatalytic results. • Enhanced conversion efficiency was observed for the DSSCs from CN-TiO{sub 2} photoanode. • CN-codoping played an important role to improve the photocatalytic performance. - Abstract: Carbon and nitrogen codoped titania (CN-TiO{sub 2}) nanoparticles were fabricated by calcining titanium nitride (TiN) nanoparticles under carbon monoxide (CO) atmosphere at four different temperatures in a range of 400–600 °C. The as-prepared samples were characterized with X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and X-ray photoelectron spectroscopy (XPS). Enhanced light absorption in both the UV and visible light region was observed for the resulted CN-TiO{sub 2} nanoparticles in ultraviolet-visible diffuse reflectance spectroscopy (UV–vis DRS). Improved photocatalytic activity toward the degradation of methylene blue by the CN-TiO{sub 2} nanoparticles was demonstrated under UV and visible light, respectively. The highest degradation rate was achieved for CN-TiO{sub 2} nanoparticles (13%) compared to N-TiO{sub 2} (10%) and the commercial P25 (5%) under visible light illumination for 40 min. Furthermore, the improved photocatalytic activity of CN-TiO{sub 2} was also confirmed by the degradation of colorless resorcinol under UV–vis light irradiation. Dye-sensitized solar cells (DSSCs) were fabricated using P25, N-TiO{sub 2} and CN-TiO{sub 2} photoanodes, respectively. The highest conversion efficiency of 3.31% was achieved by the DSSCs based on the CN-TiO{sub 2} photoanodes in comparison with the commercial P25 (1.61%) and N-TiO{sub 2} (2.44%) photoanodes. This work demonstrates that thermal treatment of TiN nanoparticles under CO atmosphere has shown to be a rapid, direct and clean approach to synthesize photocatalysts with enhanced photocatalytic and photovoltaic performance.

Sun, Mingxuan; Song, Peng; Li, Jing; Cui, Xiaoli, E-mail: xiaolicui@fudan.edu.cn

2013-10-15T23:59:59.000Z

357

APPLICATION OF BAYESIAN AND GEOSTATISTICAL MODELING TO THE ENVIRONMENTAL MONITORING OF CS-137 AT THE IDAHO NATIONAL LABORATORY  

SciTech Connect (OSTI)

At the Idaho National Laboratory (INL) Cs-137 concentrations above the U.S. Environmental Protection Agency risk-based threshold of 0.23 pCi/g may increase the risk of human mortality due to cancer. As a leader in nuclear research, the INL has been conducting nuclear activities for decades. Elevated anthropogenic radionuclide levels including Cs-137 are a result of atmospheric weapons testing, the Chernobyl accident, and nuclear activities occurring at the INL site. Therefore environmental monitoring and long-term surveillance of Cs-137 is required to evaluate risk. However, due to the large land area involved, frequent and comprehensive monitoring is limited. Developing a spatial model that predicts Cs-137 concentrations at unsampled locations will enhance the spatial characterization of Cs-137 in surface soils, provide guidance for an efficient monitoring program, and pinpoint areas requiring mitigation strategies. The predictive model presented herein is based on applied geostatistics using a Bayesian analysis of environmental characteristics across the INL site, which provides kriging spatial maps of both Cs-137 estimates and prediction errors. Comparisons are presented of two different kriging methods, showing that the use of secondary information (i.e., environmental characteristics) can provide improved prediction performance in some areas of the INL site.

Kara G. Eby

2010-08-01T23:59:59.000Z

358

Relationship between the {sup 137}Cs whole-body counting results and soil and food contamination in farms near Chernobyl  

SciTech Connect (OSTI)

The authors measured the radioactivity in the soil and child food samples from farms near Mogilev (56--270 GBq km{sup {minus}2} {sup 137}Cs), Gomel (36--810 GBq km{sup {minus}2} {sup 137}Cs), and Klincy (59--270 GBq km{sup {minus}2} {sup 137}Cs), who had whole-body {sup 137}Cs counting results measured as part of a health examination in the Chernobyl Sasakawa Health and Medical Cooperation Project. Soil contamination on the family farm seems to be the main source of human contamination because most of the people in the area live on small farms and they and their domestic animals eat crops from the farms. A clear correlation was found between the children's whole-body {sup 137}Cs counting results and the radioactivity in their food (correlation coefficient: 0.76; confidence level of correlation: 3.2 x 10{sup {minus}9}). There were also significant correlations between the whole-body {sup 137}Cs counting results and both the radioactivity of the soil samples (correlation coefficient: 0.22; confidence level of correlation: 0.0107) and the average contamination level of their current residence (correlation coefficient: 0.20; confidence level of correlation: 0.0174).

Takatsuji, Toshihiro; Sato, Hitoshi; Takada, Jun [and others] [and others

2000-01-01T23:59:59.000Z

359

Cs-137 in the Savannah River and the Beaufort-Jasper and Port Wentworth water-treatment plants  

SciTech Connect (OSTI)

Cesium-137 concentration measurements made in 1965 are reported for the Savannah River above and below the Savannah River Plant (SRP) and for the Beaufort-Jasper and Port Wentworth water treatment plants down river. These concentrations, measured when four SRP reactors (C, K, L, and P) were operating, were used to estimate Cs-137 reduction ratios for transport in the Savannah River and across each water treatment plant. In 1965 there was a 48% reduction in the Cs-137 concentration in the Savannah River between Highway 301 and the water treatment plant inlet points. Measured Cs-137 values in the finished water from Port Wentworth and the Beaufort-Jasper water treatment plants showed an 80% and 98% reduction in concentration level, respectively, when compared to Cs-137 concentration at Highway 301. The lower Cs-137 concentration (0.04 pCi/l) in the Beaufort-Jasper finished water is attributed to dilution in the canal from inflow of surface water (40%) and sediment cleanup processes that take place in the open portions of the canal (about 17 to 18 miles). Using the 1965 data, maximum Cs-137 concentrations expected in finished water in the Beaufort-Jasper and Port Wentworth water treatment plants following L-Reactor startup were recalculated. The recalculated values are 0.01 and 0.09 pCi/l for Beaufort-Jasper and Port Wentworth, respectively, compared to the 1.05 pCi/l value in the Environmental Assessment.

Hayes, D.W.; Boni, A.L.

1983-01-10T23:59:59.000Z

360

Aggregated Transfer Factors For Small Mammals Collected From the Exposed Sediments Of A 137 Cs Contaminated Reservoir  

SciTech Connect (OSTI)

{sup 137}Cs transfer factors were computed for small mammals collected from the dried sediment areas of a partially drained, contaminated reservoir. Soil {sup 137}Cs concentrations were heterogeneous on small and large spatial scales, with a geometric mean of 253.1 Bq/kg dry weight. About 50% of the variance in cotton rat Sigmodon hispidus tissue {sup 137}Cs levels was explained by variation in soil {sup 137}Cs levels. Soil to animal transfer factors (whole body dry weight) averaged 6.0 for cotton rats and 1.2 for cotton mice Peromyscus gossypinus. These values are similar to {sup 137}Cs transfer factors for herbivorous, homeothermic animals from other contaminated ecosystems. Site-specific transfer factors can significantly affect the estimation of dose. In the RESRAD-BIOTA dose model, the default transfer factor for {sup 137}Cs in terrestrial animals is 110 resulting in an estimate of radiation dose to terrestrial biota that is 16 times more than the dose calculated with the actual measured transfer factor.

Paller, Michael H.; Jannika, G. Timothy; Wike, Lynn D

2005-10-04T23:59:59.000Z

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


361

Long-Term Reduction in 137Cs Concentration in Food Crops on Coral Atolls Resulting from Potassium Treatment  

SciTech Connect (OSTI)

Bikini Island was contaminated March 1, 1954 by the Bravo detonation (U.S nuclear test series, Castle) at Bikini Atoll. About 90% of the estimated dose from nuclear fallout to potential island residents is from cesium-137 ({sup 137}Cs) transferred from soil to plants that are consumed by residents. Thus, radioecology research efforts have been focused on removing {sup 137}Cs from soil and/or reducing its uptake into vegetation. Most effective was addition of potassium (K) to soil that reduces {sup 137}Cs concentration in fruits to 3-5% of pretreatment concentrations. Initial observations indicated this low concentration continued for some time after K was last applied. Long-term studies were designed to evaluate this persistence in more detail because it is very important to provide assurance to returning populations that {sup 137}Cs concentrations in food (and, therefore, radiation dose) will remain low for extended periods, even if K is not applied annually or biennially. Potassium applied at 300, 660, 1260, and 2070 kg ha{sup -1} lead to a {sup 137}Cs concentration in drinking coconut meat that is 34, 22, 10, and about 4% of original concentration, respectively. Concentration of {sup 137}Cs remains low 8 to 10 y after K is last applied. An explanation for this unexpected result is discussed.

Robison, W L; Stone, E L; Hamilton, T F; Conrado, C L

2004-04-14T23:59:59.000Z

362

Long-Term Reduction in 137Cs Concentration in Food Crops on Coral Atolls Resulting from Potassium Treatment  

SciTech Connect (OSTI)

Bikini Island was contaminated March 1, 1954 by the Bravo detonation (U.S nuclear test series, Castle) at Bikini Atoll. About 90% of the estimated dose from nuclear fallout to potential island residents is from cesium-137 ({sup 137}Cs) transferred from soil to plants that are consumed by residents. Thus, radioecology research efforts have been focused on removing {sup 137}Cs from soil and/or reducing its uptake into vegetation. Most effective was addition of potassium (K) to soil that reduces {sup 137}Cs concentration in fruits to 3-5% of pretreatment concentrations. Initial observations indicated this low concentration continued for some time after K was last applied. Long-term studies were designed to evaluate this persistence in more detail because it is very important to provide assurance to returning populations that {sup 137}Cs concentrations in food (and, therefore, radiation dose) will remain low for extended periods, even if K is not applied annually or biennially. Potassium applied at 300, 660, 1260, and 1970 kg ha{sup -1} lead to a {sup 137}Cs concentration in drinking coconut meat that is 34, 22, 10, and about 4 % of original concentration, respectively. Concentration of {sup 137}Cs remains low 8 to 10 y after K is last applied. An explanation for this unexpected result is discussed.

Robison, W; Stone, E; Hamilton, T; Conrado, C

2005-04-08T23:59:59.000Z

363

A novel hierarchical homogeneous nanoarchitecture of TiO2 nanosheets branched TiO2 nanosheet arrays for high efficiency dye-sensitized solar cells  

Science Journals Connector (OSTI)

Abstract We report a novel hierarchical homogeneous nanoarchitecture of TiO2 nanosheets branched TiO2 nanosheet arrays, which is formed directly on transparent conductive fluorine-doped tin oxide (FTO) glass substrate through a one-step facile hydrothermal reaction without the use of a seed layer. The hierarchical homogeneous nanoarchitecture is composed of long TiO2 nanosheet trunks grafted with a large number of TiO2 nanosheet branches, which is an effective structure to improve the charge transport with the increase of the specific surface area. Dye-sensitized solar cell (DSSC) based on TiO2 nanosheets branched TiO2 nanosheet arrays can achieve an outstanding power conversion efficiency of 6.66%, which is attributed to the specific performances such as higher specific surface area for adsorbing more dye molecules, superior light scattering capacity for boosting the light-harvesting efficiency and faster charge transport for efficient charge collection.

Bing-Xin Lei; Xiao-Feng Zheng; He-kang Qiao; Yi Li; Shu-Nuo Wang; Guo-Lei Huang; Zhen-Fan Sun

2014-01-01T23:59:59.000Z

364

Topotaxial growth of Ti{sub 2}AlN by solid state reaction in AlN/Ti(0001) multilayer thin films  

SciTech Connect (OSTI)

The formation of Ti{sub 2}AlN by solid state reaction between layers of wurtzite-AlN and {alpha}-Ti was characterized by in situ x-ray scattering. The sequential deposition of these layers by dual magnetron sputtering onto Al{sub 2}O{sub 3}(0001) at 200 deg. C yielded smooth, heteroepitaxial (0001) oriented films, with abrupt AlN/Ti interfaces as shown by x-ray reflectivity and Rutherford backscattering spectroscopy. Annealing at 400 deg. C led to AlN decomposition and diffusion of released Al and N into the Ti layers, with formation of Ti{sub 3}AlN. Further annealing at 500 deg. C resulted in a phase transformation into Ti{sub 2}AlN(0001) after only 5 min.

Hoeglund, C.; Beckers, M.; Schell, N.; Borany, J. v.; Birch, J.; Hultman, L. [Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linkoeping University, S-581 83 Linkoeping (Sweden); GKSS Research Center Geesthacht, Max-Planck-Str. 1, D-21502 Geesthacht (Germany); Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden-Rossendorf, P.O. Box 510119, D-01314 Dresden (Germany); Thin Film Physics Division, Department of Physics, Chemistry and Biology (IFM), Linkoeping University, S-581 83 Linkoeping (Sweden)

2007-04-23T23:59:59.000Z

365

Hysteretic electrical transport in BaTiO{sub 3}/Ba{sub 1?x}Sr{sub x}TiO{sub 3}/Ge heterostructures  

SciTech Connect (OSTI)

We present electrical transport measurements of heterostructures comprised of BaTiO{sub 3} and Ba{sub 1?x}Sr{sub x}TiO{sub 3} epitaxially grown on Ge. Sr alloying imparts compressive strain to the BaTiO{sub 3}, which enables the thermal expansion mismatch between BaTiO{sub 3} and Ge to be overcome to achieve c-axis oriented growth. The conduction bands of BaTiO{sub 3} and Ba{sub 1?x}Sr{sub x}TiO{sub 3} are nearly aligned with the conduction band of Ge, which facilitates electron transport. Electrical transport measurements through the dielectric stack exhibit rectifying behavior and hysteresis, where the latter is consistent with ferroelectric switching.

Ngai, J. H.; Kumah, D. P.; Walker, F. J. [Department of Applied Physics and Center for Research on Interface Structures and Phenomena, Yale University, 15 Prospect Street, New Haven, Connecticut 06520-8284 (United States); Ahn, C. H. [Department of Applied Physics and Center for Research on Interface Structures and Phenomena, Yale University, 15 Prospect Street, New Haven, Connecticut 06520-8284 (United States); Department of Mechanical Engineering and Materials Science, Yale University, 10 Hillhouse Avenue, New Haven, Connecticut 06520-8267 (United States)

2014-02-10T23:59:59.000Z

366

Optically controlled waveplate at a telecom wavelength using a ladder transition in Rb atoms for all-optical switching and high speed Stokesmetric Imaging  

E-Print Network [OSTI]

We demonstrate an optically controlled waveplate at ~1323 nm using the 5S1/2-5P1/2-6S1/2 ladder transition in a Rb vapor cell. The lower leg of the transitions represents the control beam, while the upper leg represents the signal beam. We show that we can place the signal beam in any arbitrary polarization state with a suitable choice of polarization of the control beam. Specifically, we demonstrate a differential phase retardance of ~180 degrees between the two circularly polarized components of a linearly polarized signal beam. We also demonstrate that the system can act as a Quarter Wave plate. The optical activity responsible for the phase retardation process is explained in terms of selection rules involving the Zeeman sublevels. As such, the system can be used to realize a fast Stokesmetric Imaging system with a speed of nearly 5 MHz. When implemented using a tapered nano fiber embedded in a vapor cell, this system can be used to realize an ultra-low power all-optical switch as well as a Quantum Zeno Effect based all-optical logic gate by combining it with an optically controlled polarizer, previously demonstrated by us. We present numerical simulations of the system using a comprehensive model which incorporates all the relevant Zeeman sub-levels in the system, using a novel algorithm recently developed by us for efficient computation of the evolution of an arbitrary large scale quantum system.

Subramanian Krishnamurthy; Y. Tu; Y. Wang; S. Tseng; M. S. Shahriar

2014-08-01T23:59:59.000Z

367

Observation of prolonged coherence time of the collective spin wave of an atomic ensemble in a paraffin-coated {sup 87}Rb vapor cell  

SciTech Connect (OSTI)

We report a prolonged coherence time of the collective spin wave of a thermal {sup 87}Rb atomic ensemble in a paraffin-coated cell. The spin wave is prepared through a stimulated Raman process. The long coherence time is achieved by prolonging the lifetime of the spins with paraffin coating and minimize dephasing with optimal experimental configuration. The observation of the long-time-delayed-stimulated Stokes signal in the writing process suggests the prolonged lifetime of the prepared spins; a direct measurement of the decay of anti-Stokes signal in the reading process shows the coherence time is up to 300 mus after minimizing dephasing. This is 100 times longer than the reported coherence time in the similar experiments in thermal atomic ensembles based on the Duan-Lukin-Cirac-Zoller and its improved protocols. This prolonged coherence time sets the upper limit of the memory time in quantum repeaters based on such protocols, which is crucial for the realization of long-distance quantum communication. The previous reported fluorescence background in the writing process due to collision in a sample cell with buffer gas is also reduced in a cell without buffer gas.

Jiang Shuo; Luo Xiaoming; Chen Liqing; Ning Bo [Physics Department, Tsinghua University, Beijing 100084 (China); Chen Shuai [Physikalisches Institute, Universitaet Heidelberg, 69120 Heidelberg (Germany); Wang Jingyang; Zhong Zhiping [College of Physical Sciences, Graduate University of the Chinese Academy of Sciences, P.O. Box 4588, Beijing 100049 (China); Pan Jianwei [Physics Department, Tsinghua University, Beijing 100084 (China); Physikalisches Institute, Universitaet Heidelberg, 69120 Heidelberg (Germany)

2009-12-15T23:59:59.000Z

368

Structure of gramicidin D-RbCl complex at atomic resolution from low-temperature synchrotron data: interactions of double-stranded gramicidin channel contents and cations with channel wall  

SciTech Connect (OSTI)

Gramicidin D (gD) is a naturally occurring ionophoric antibiotic that forms membrane channels specific for monovalent cations. The crystal structure of the RbCl complex of gD has been determined at 1.14 {angstrom} resolution from low-temperature (100 K) synchrotron-radiation data with a final R of 16%. The structure was refined with anisotropic temperature factors for all non-H atoms and with partial occupancies for many of them. The asymmetric unit in the crystal contains four crystallographically independent molecules that form two right-handed antiparallel double-stranded dimers. There are seven distinct rubidium-binding sites in each dimeric channel. The occupancy factors of Rb cations are between 0.11 and 0.35 and the total ion contents of the two crystallographically independent channels are 1.59 and 1.22 ions, respectively. Although each channel is 'chemically symmetrical', the side-chain conformations, the distributions of rubidium cations and their binding sites in the two independent channels are not. Cations are 'coordinated' by delocalized {pi}-electrons of three to five carbonyl groups that together with peptide backbone chains form the gramicidin channel walls. The water:cation ratio in the channel interior is four or five:one, and five or six waters separate Rb cations during their passage through the channel.

Glówka, M.L.; Olczak, A.; Bojarska, J.; Szczesio, M.; Duax, W.L.; Burkhart, B.M.; Pangborn, W.A.; Langs, D.A.; Wawrzak, Z. (Poland); (NWU); (Hauptman)

2010-03-05T23:59:59.000Z

369

cONNEcTiONS SPriNG 2015  

E-Print Network [OSTI]

curricular cONNEcTiONS GuiDE SPriNG 2015 Aquila Theatre Wuthering Heights Photo Credit: Richard Termine (top) Susan Brandeis Design Class at the Gregg Museum Photo Credit: Matthew Gay (bottom) #12G) is a great way to integrate the arts into academic work, to foster a well-rounded education where art

Velev, Orlin D.

370

Ni-Pt Silicide Formation Through Ti Mediating Layers  

SciTech Connect (OSTI)

With Ni1-xPtxSi, the variation in queue time between the final surface cleaning and Ni-Pt deposition represents a significant manufacturability issue. A short queue time is often difficult to maintain, leading to the formation of an oxide layer on the Si substrate prior to Ni-Pt deposition that can affect the formation of Ni1-xPtxSi and its texture. In this manuscript, it will be shown that an extended queue time prior to Ni-Pt deposition leads to morphological changes in the Ni1-xPtxSi formation sequence. A layer of Ti deposited between Ni-Pt and Si reduces the native oxide and may facilitate Ni1-xPtxSi formation. With increasing Ti thickness, the presence of metal-rich phases is gradually reduced and the formation temperature of Ni1-xPtxSi increases, suggesting a direct formation of Ni1-xPtxSi from Ni-Pt. In the presence of an interfacial oxide, an increase in formation temperature is also observed with increasing Ti interlayer thickness. When the Ti layer is sufficiently thick, the phase formation sequence becomes relatively insensitive to the presence of an interfacial oxide or extended queue time.

Besser,P.; Lavoie, C.; Ozcan, A.; Murray, C.; Strane, J.; Wong, K.; Gribelyuk, M.; Wang, Y.; Parks, C.; Jordan-Sweet, J.

2007-01-01T23:59:59.000Z

371

A Study of Oxygen Vacancy Formation and Annihilation in Submonolayer Coverages of TiO2 Dispersed on MCM-48  

E-Print Network [OSTI]

A Study of Oxygen Vacancy Formation and Annihilation in Submonolayer Coverages of TiO2 Dispersed.932), suggesting the formation of oxygen vacancies. The fraction of Ti that could be reduced increased with TiO2 the TiO2 overlayer as the size of the titania patches increases. The amount of oxygen removed during

Bell, Alexis

372

Injection seeding of a Ti: sapphire laser using a Ramp-Hold-Fire technique  

E-Print Network [OSTI]

n a K a 4 SC 0 a a D 5V a v N IC ROD ~ IS SUU 0dl 0 PSP OUII 001 O IS ~ I Ppdd UIO Old IOO RSS IOO Rld QO IOOK CS R I I UOK CS CS SSPI Old 0 ~ SJp -ODOV IOOK Fig. B-8. Output Amplifiers. R15 POI 0 I I 104 RJR... n a K a 4 SC 0 a a D 5V a v N IC ROD ~ IS SUU 0dl 0 PSP OUII 001 O IS ~ I Ppdd UIO Old IOO RSS IOO Rld QO IOOK CS R I I UOK CS CS SSPI Old 0 ~ SJp -ODOV IOOK Fig. B-8. Output Amplifiers. R15 POI 0 I I 104 RJR...

Larsen, Matthew P

2012-06-07T23:59:59.000Z

373

Probing photochemical transformations at TiO{sub 2}/Pt and TiO{sub 2}/Ir interfaces using x-ray absorption spectroscopy  

SciTech Connect (OSTI)

Structural transformations at the TiO{sub 2}/Pt and TiO{sub 2}/Ir interfaces during UV-irradiation have been probed by X-ray absorption spectroscopy. Oxidation by the photogenerated holes results in the intercalation of Pt and Ir into the Titania matrix. The structural transformations observed with Pt and Ir nanoparticles anchored on TiO{sub 2} is different than the clustering of gold atoms observed in the TiO{sub 2}/Au system. Implications of such structural transformations on the photocatalytic activity of semiconductor photocatalyts are discussed.

Lahiri, Debdutta; Subramanian, V.; Bunker, Bruce A.; Kamat, Prashant V. [Synchrotron Radiation Section, Physics Group, Bhabha Atomic Research Centre, Mumbai 400085 (India); Department of Chemical Engineering, University of Illinois at Urbana-Champaign, Illinois 61801 (United States); Department of Physics, University of Notre Dame, Indiana 46556 (United States); Radiation Laboratory, University of Notre Dame, Indiana 46556 (United States)

2006-05-28T23:59:59.000Z

374

Intrinsic metastability of orthorhombic HfTiO{sub 4} in thin film hafnia-titania  

SciTech Connect (OSTI)

Orthorhombic (o) HfTiO{sub 4} is crystallized when sputter deposited hafnia-titania nanolaminates with ultrathin layers and bilayer (HfO{sub 2}){sub 0.5}(TiO{sub 2}){sub 0.5} composition are annealed between 573 and 1173 K. However, o-HfTiO{sub 4} demixes after annealing at 1273 K, a result not predicted from bulk thermodynamics. X-ray diffraction and Raman microscopy are used here to study structural changes as o-HfTiO{sub 4} demixes upon long-term annealing at 1273 K into Ti-doped monoclinic HfO{sub 2} and Hf-doped rutile TiO{sub 2}. We conclude that o-HfTiO{sub 4} crystallized at low temperature is intrinsically metastable. A space group symmetry analysis shows that demixing can be accomplished by a continuous phase transition chain.

Cisneros-Morales, Massiel Cristina; Aita, Carolyn Rubin [Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201 (United States)

2011-01-31T23:59:59.000Z

375

Interaction of TiO{sub 2}{sup ?} with water: Photoelectron spectroscopy and density functional calculations  

SciTech Connect (OSTI)

The interactions of titania with water molecules were studied via photoelectron spectroscopy and density functional calculations of TiO(OH){sub 2}{sup ?} and Ti(OH){sub 4}(H{sub 2}O){sub n}{sup ?} (n = 0–5) clusters which are corresponding to the TiO{sub 2}(H{sub 2}O){sup ?} and TiO{sub 2}(H{sub 2}O){sub n+2}{sup ?} (n = 0–5) systems, respectively. Experimental observation and theoretical calculations confirmed that TiO(OH){sub 2}{sup ?} was produced when TiO{sub 2}{sup ?} interacts with one water molecule, and Ti(OH){sub 4}(H{sub 2}O){sub n}{sup ?} (n = 0–5) were produced successively when TiO{sub 2}{sup ?} interacts with two or more water molecules. The structures of Ti(OH){sub 4}(H{sub 2}O){sub n}{sup ?} with n = 4, 5 are slightly different from those of n = 1–3. The structures of Ti(OH){sub 4}(H{sub 2}O){sub 1-3}{sup ?} can be viewed as the water molecules interacting with the Ti(OH){sub 4}{sup ?} core through hydrogen bonds; however, in Ti(OH){sub 4}(H{sub 2}O){sub 4,5}{sup ?}, one of the water molecules interacts directly with the Ti atom via its oxygen atom instead of a hydrogen bond and distorted the Ti(OH){sub 4}{sup ?} core.

Li, Ren-Zhong [College of Electronics and Information, Xi'an Polytechnic University, Xi'an 710048 (China) [College of Electronics and Information, Xi'an Polytechnic University, Xi'an 710048 (China); Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Xu, Hong-Guang; Cao, Guo-Jin; Xu, Xi-Ling; Zheng, Wei-Jun, E-mail: zhengwj@iccas.ac.cn [Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)] [Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (China)

2013-11-14T23:59:59.000Z

376

Quantum Control of the Hyperfine Spin of a Cs Atom Ensemble  

SciTech Connect (OSTI)

We demonstrate quantum control of a large spin angular momentum associated with the F=3 hyperfine ground state of {sup 133}Cs. Time-dependent magnetic fields and a static tensor light shift are used to implement near-optimal controls and map a fiducial state to a broad range of target states, with yields in the range 0.8-0.9. Squeezed states are produced also by an adiabatic scheme that is more robust against errors. Universal control facilitates the encoding and manipulation of qubits and qudits in atomic ground states and may lead to the improvement of some precision measurements.

Chaudhury, Souma; Herr, Tobias; Jessen, Poul S. [College of Optical Sciences, University of Arizona, Tucson, Arizona 85721 (United States); Merkel, Seth; Silberfarb, Andrew; Deutsch, Ivan H. [Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131 (United States)

2007-10-19T23:59:59.000Z

377

Photoionization rates of Cs Rydberg atoms in a 1064-nm far-off-resonance trap  

SciTech Connect (OSTI)

Experimental measurements of photoionization rates of nD{sub 5/2} Rydberg states of Cs (50{<=}n{<=}75) in a 1064-nm far off-resonance dipole trap are presented. The photoionization rates are obtained by measuring the lifetimes of Rydberg atoms produced inside of a 1064-nm far off-resonance trap and comparing the lifetimes to corresponding control experiments in a magneto-optical trap. Experimental results for the control experiments agree with recent theoretical predictions for Rydberg state lifetimes and measured photoionization rates are in agreement with transition rates calculated from a model potential.

Tallant, J.; Booth, D.; Shaffer, J. P. [Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, 440 West Brooks Street, Norman, Oklahoma 73019 (United States)

2010-12-15T23:59:59.000Z

378

Illite in the Oklo natural fission reactors in Gabon: Considerations for Cs containment  

SciTech Connect (OSTI)

The {approximately} 2 Ga old Oklo, Okelobondo and Bangombe natural reactors in the Republic of Gabon contain solid graphitic bitumens and clay minerals, both of which have effected the containment, or partial containment, of {sup 235}U and several fission products. In laboratory experiments, sorption of {sup 134}Cs by illite, and illite coated with petroleum was measured in aqueous NaCl solutions to simulate subsurface (connate) waters in sedimentary rocks. Elevated temperatures and increasing salinity of the NaCl solutions facilitated the removal of sorbed cesium from illite.

Szabo, G.; Guczi, J. [Frederic Joliot-Curie National Research Inst. for Radiobiology and Radiohygiene, Budapest (Hungary); Nagy, B. [Univ. of Arizona, Tucson, AZ (United States); Janeczek, J. [Uniwersytet Slaski, Sosnowiec (Poland); Ewing, R.C. [Univ. of New Mexico, Albuquerque, NM (United States). Dept. of Earth and Planetary Sciences

1995-12-31T23:59:59.000Z

379

Carrier Density Enhancement in Semiconducting NaSn and CsPb  

Science Journals Connector (OSTI)

The electrical conductivity ? and thermoelectric power S data have been measured in two semiconductors that undergo a solid-state transformation to a dynamically disordered phase about 100 °C below the melting point. At the transition, ? for NaSn is reduced while that for CsPb exhibits a dramatic rise. For both semiconductors, S is reduced in magnitude and changes sign at the transition. These results are consistent with a model which explicitly allows for the interactions between mobile ions and electrons and which provides a unified explanation of the transport properties of these compounds and other fast ion conductors with appreciable electronic conductivity.

J. Fortner, Marie-Louise Saboungi, and J. E. Enderby

1995-02-20T23:59:59.000Z

380

Time-Resolved Molecular Frame Dynamics of Fixed-in-Space CS2 Molecules  

SciTech Connect (OSTI)

Random orientation of molecules within a sample leads to blurred observationsof chemical reactions studied from the laboratory perspective. Methodsdeveloped for the dynamic imaging of molecular structures and processesstruggle with this, as measurements are optimally made in the molecular frame.Here we uselaser alignment to transiently fix CS2 molecules in space longenough to elucidate, in the molecular reference frame, details of ultrafast electronic vibrationaldynamics during a photochemical reaction. These three-dimensional photoelectron imaging results, combined with ongoing efforts in molecular alignment and orientation, presage a wide range of insights obtainable fromtime-resolved studies in the molecular frame.

Bisgaard, Christer; Clarkin, Owen; Wu, Guorong; Lee, Anthony; Gessner, Oliver; Hayden, Carl; Stolow, Albert

2009-04-02T23:59:59.000Z

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


381

Temporal variations in 134Cs and 137Cs concentrations in seawater along the Shimokita Peninsula and the northern Sanriku coast in northeastern Japan, one year after the Fukushima Dai-ichi Nuclear Power Plant accident  

Science Journals Connector (OSTI)

Abstract Ninety-six seawater samples were collected between May 2011 and March 2012 at 6 sites along the Shimokita Peninsula and the northern Sanriku coast, 250–450 km north of the Fukushima Dai-ichi Nuclear Power Plant (FDNPP). Cesium-134 and 137Cs concentrations were determined by low-background ?-spectrometry. During May–June 2011, 134Cs and 137Cs concentrations in surface waters decreased from 1.0–2.8 to 0.7–1.5 mBq/L and from 2.1–3.9 to 1.9–3.0 mBq/L, respectively. These decreases were due to diffusion and advection in the ocean after atmospheric input of the FDNPP-derived radionuclides. However, in July–August 2011, the concentrations of both radionuclides in the water samples collected on the Pacific side of the Shimokita Peninsula and the northern Sanriku coast exhibited 30–50-fold increases (?40 mBq/L for 134Cs and ?50 mBq/L for 137Cs) over concentrations observed at these sampling sites in June 2011 in contrast to the gradual decreases in the concentrations on the Tsugaru Strait side of the Shimokita Peninsula. These results suggest that radiocesium-contaminated waters offshore in the Pacific Ocean were transported to coastal regions along the Pacific side of the Shimokita Peninsula and the northern Sanriku coast by ocean currents.

Hisaki Kofuji; Mutsuo Inoue

2013-01-01T23:59:59.000Z

382

Photocatalytic effects of wool fibers modified with solely TiO2 nanoparticles and N-doped TiO2 nanoparticles by using hydrothermal method  

Science Journals Connector (OSTI)

Abstract The surfaces of wool fibers are modified with N-doped TiO2 nanoparticles by treating the fibers with tetrabutyl titanate and ammonium chloride under low temperature hydrothermal conditions to obtain wool fibers with photocatalytic functions in the visible light spectrum. The effects of nitrogen and sulfur in amino acids in keratin on the photocatalytic activity of TiO2 particle coated wool fibers are investigated. Changes of various fiber properties such as tensile strength, photocatalytic activity, and self-cleaning performance of untreated, TiO2 coated and N-doped TiO2 coated wool fibers are studied. It is found that N-doped anatase TiO2 nanoparticles with an average grain size of 11.2 nm are synthesized and simultaneously grafted onto the wool fibers. After treatments, the crystallization index of the wool fibers is slightly reduced. The capability to protect against ultraviolet radiation is much enhanced. The performances of photocatalytic degradation of methylene blue dye and self-cleaning of red wine under both UV and visible light irradiation are endowed. It is also found that wool fibers coated with TiO2 particles without being doped by nitrogen still have apparent photocatalytic reactions and self-cleaning effects under visible light irradiation due to the formation of C-Ti3+, O-Ti3+, and N-Ti3+ bonds between TiO2 and wool keratin on the wool fiber surfaces. Thus wool fabrics might not need to be coated with N-doped TiO2 nanoparticles to realize its self-cleaning effect under visible light. Such important conclusions would provide wool materials with wide applications in clothing and technical products such as wastewater treatment.

Hui Zhang; Zhenwei Yang; Xingtao Zhang; Ningtao Mao

2014-01-01T23:59:59.000Z

383

Au/PO43-/TiO2 and PO43-/Au/TiO2 catalysts for CO oxidation: effect of synthesis details on catalytic performance  

SciTech Connect (OSTI)

Supported gold catalysts are active for CO oxidation, but the high-temperature deactivation is a shortcoming that may constrain their applications. Herein, we attempted to address this problem by using phosphate-doped Au/TiO{sub 2} synthesized via two routes. In route I, Au/PO{sub 4}{sup 3-}/TiO{sub 2} catalysts were prepared by treating TiO{sub 2} (Degussa P25) with diluted H{sub 3}PO{sub 4}, followed by loading gold via deposition-precipitation. In route II, PO{sub 4}{sup 3-}/Au/TiO{sub 2} catalysts were prepared by treating H{sub 2}-reduced Au/TiO{sub 2} with diluted H{sub 3}PO{sub 4}. These catalysts were systematically pretreated at 200 or 500 C before reaction testing. The overall CO conversion on 200 C-pretreated Au/PO43-/TiO2 or PO43-/Au/TiO2 was always lower than that on 200 C-pretreated Au/TiO2. However, the advantage of the phosphate addition became apparent after thermal treatment at a higher temperature. Both Au/PO43-/TiO2 and PO43-/Au/TiO2 pretreated at 500 C retained significant activities at room temperature, whereas 500 C-pretreated Au/TiO2 lost its activity. Control experiments and catalyst characterization were performed to investigate the impact of synthesis details on catalytic performance.

Ma, Zhen [ORNL; Overbury, Steven {Steve} H [ORNL; Dai, Sheng [ORNL

2007-01-01T23:59:59.000Z

384

Perturbation-theoretical-model calculation of the lattice mechanics of the NaF and RbF crystals in the Watson potential approximation  

Science Journals Connector (OSTI)

A simplified version of the perturbation-theoretical-model approach to ionic solids developed by Basu and Sengupta has been employed for calculating the different lattice-mechanical properties of the two low-polarizability ionic crystals. Although this is not a microscopic calculation, the interesting feature of the method is that the only input data necessary for predicting the crystal properties are the Hartree-Fock wave functions of the constituent ions. In addition, the present investigation for the first time makes an attempt to study the effect of the alteration of the free-ion wave functions, when the ions are put in a crystal, on the lattice-dynamical properties. The effect of the crystal environment is thought to be simulated by the Watson potential. The calculated properties with and without the potential give a rough estimate of the order of magnitude of this effect. It is found that certain properties, namely, the dielectric properties and some phonons in the symmetry directions that depend on the excited states of the crystal, are rather sensitive to this effect which varies from crystal to crystal. Apart from this, a unified treatment of the cohesion, the phase transition, and the elastic, the dielectric, and the vibrational properties of the NaF and RbF crystals is presented without any adjustable free parameter. In view of the simplicity of the approach, the overall agreement obtained is satisfactory. Finally the reliability and the limitations of the present method of estimating the effect of the surroundings are critically discussed.

D. Bose; A. Ghosh; A. N. Basu

1984-03-15T23:59:59.000Z

385

Nanocrystalline Cs{sub x}WO{sub 3} particles: Effects of N{sub 2} annealing on microstructure and near-infrared shielding characteristics  

SciTech Connect (OSTI)

In order to further improve the near-infrared shielding properties of cesium tungsten bronze (Cs{sub x}WO{sub 3}) for solar filter applications, Cs{sub x}WO{sub 3} particles were prepared by solvothermal reaction method and the effects of nitrogen annealing on the microstructure and near-infrared shielding properties of Cs{sub x}WO{sub 3} were investigated. The obtained Cs{sub x}WO{sub 3} samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and spectrophotometer. The results indicate that nanosheet-like Cs{sub x}WO{sub 3} particles with hexagonal structure began to transform into nanorods after annealed at temperature higher than 600 °C. The near-infrared shielding properties of Cs{sub x}WO{sub 3} particles could be further improved by N{sub 2} annealing at 500–700 °C. Particularly, the 500 °C-annealed Cs{sub x}WO{sub 3} samples in the N{sub 2} atmosphere showed best near-infrared shielding properties. It was suggested that the excellent near-infrared shielding ability of the 500 °C-annealed Cs{sub x}WO{sub 3} samples is correlated with its minimum O/W atomic ratio and most oxygen vacancies. Highlights: • N{sub 2} annealing could further improve the near-infrared (NIR) shielding of Cs{sub x}WO{sub 3}. • Effects of N{sub 2} annealing on microstructure and NIR shielding of Cs{sub x}WO{sub 3} were studied. • The 500 °C-N{sub 2}-annealed Cs{sub x}WO{sub 3} exhibited minimum O/W ratio and most oxygen vacancies. • The 500 °C-N{sub 2}-annealed Cs{sub x}WO{sub 3} particles exhibited best NIR shielding properties.

Liu, Jing-Xiao, E-mail: drliu-shi@dlpu.edu.cn [School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034 (China); Institute of Multidisciplinary Research for Advanced Material, Tohoku University, Sendai, 980-8577,Japan (Japan); Shi, Fei; Dong, Xiao-Li; Xu, Qiang [School of Textile and Material Engineering, Dalian Polytechnic University, Dalian 116034 (China); Yin, Shu; Sato, Tsugio [Institute of Multidisciplinary Research for Advanced Material, Tohoku University, Sendai, 980-8577,Japan (Japan)

2013-10-15T23:59:59.000Z

386

Application Of Ti-Based Self-Formation Barrier Layers To Cu Dual-Damascene Interconnects  

SciTech Connect (OSTI)

Cu interconnects have been used extensively in ULSI devices. However, large resistance-capacitance delay and poor device reliability have been critical issues as the device feature size has reduced to nanometer scale. In order to achieve low resistance and high reliability of Cu interconnects, we have applied a thin Ti-based self-formed barrier (SFB) using Cu(Ti) alloy seed to 45nm-node dual damascene interconnects and evaluated its performance. The line resistance and via resistance decreased significantly, compared with those of conventional Ta/TaN barriers. The stress migration performance was also drastically improved using the SFB process. A performance of time dependent dielectric breakdown revealed superior endurance. These results suggest that the Ti-based SFB process is one of the most promising candidates for advanced Cu interconnects. TEM and X-ray photoelectron spectroscopy observations for characterization of the Ti-based SFB structure were also performed. The Ti-based SFB consisted of mainly amorphous Ti oxides. Amorphous or crystalline Ti compounds such as TiC, TiN, and TiSi formed beneath Cu alloy films, and the formation varied with dielectric.

Ito, Kazuhiro; Kohama, Kazuyuki [Department of Materials Science and Engineering, Kyoto University, Kyoto 606-8501 (Japan); Ohmori, Kazuyuki; Mori, Kenichi; Maekawa, Kazuyoshi; Asai, Koyu [Process Technology Div., Renesas Electronics Corporation, Hitachinaka, Ibaraki 312-8504 (Japan); Murakami, Masanori [The Ritsumeikan Trust, Nakagyo-ku, Kyoto 604-8520 (Japan)

2010-11-24T23:59:59.000Z

387

Watts Bar Unit 1 Cycle Zero Power Physics Tests Analysis with VERA-CS  

SciTech Connect (OSTI)

The Consortium for Advanced Simulation of Light Water Reactors (CASL) is developing a collection of methods and software products known as VERA, the Virtual Environment for Reactor Applications, including a core simulation capability called VERA-CS. A key milestone for this endeavor is to validate VERA against measurements from operating nuclear power reactors. The first step in validation against plant data is to determine the ability of VERA to accurately simulate the initial startup physics tests for Watts Bar Nuclear Power Station, Unit 1 (WBN1) cycle 1. VERA-CS calculations were performed with the Insilico code developed at ORNL using cross section processing from the SCALE system and the transport capabilities within the Denovo transport code using the SPN method. The calculations were performed with ENDF/B-VII.0 cross sections in 252 groups (collapsed to 23 groups for the 3D transport solution). The key results of the comparison of calculations with measurements include initial criticality, control rod worth critical configurations, control rod worth, differential boron worth, and isothermal temperature reactivity coefficient (ITC). The VERA results for these parameters show good agreement with measurements, with the exception of the ITC, which requires additional investigation. Results are also compared to those obtained with Monte Carlo methods and a current industry core simulator.

Gehin, Jess C [ORNL; Godfrey, Andrew T [ORNL; Evans, Thomas M [ORNL; Hamilton, Steven P [ORNL; Francheschini, F. [Westinghouse Electric Company, Cranberry Township

2014-01-01T23:59:59.000Z

388

Studies of Cs3Sb cathodes for the CLIC drive beam photo injector option  

E-Print Network [OSTI]

Within the CLIC (Compact Linear Collider) project, feasibility studies of a photo injector option for the drive beam as an alternative to its baseline design using a thermionic electron gun are on-going. This R&D program covers both the laser and the photocathode side. Whereas the available laser pulse energy in ultra-violet (UV) is currently limited by the optical defects in the 4thharmonics frequency conversion crystal induced by the0.14 ms long pulse trains, recent measurements of Cs3Sbphotocathodes sensitive to green light showed their potential to overcome this limitation. Moreover, using visible laser beams leads to better stability of produced electron bunches and one can take advantages of the availability of higher quality optics. The studied Cs3Sbphotocathodes have been produced in the CERN photo emission laboratory using the co-deposition technique and tested in a DC gun set-up. The analysis of data acquired during the cathode production process will be presented in this paper, as well as the r...

Martini, Irene; Doebert, Steffen; Fedosseev, Valentine; Hessler, Christoph; Martyanov, Mikhail

2013-01-01T23:59:59.000Z

389

Paramagnetic Resonance Hyperfine Structure of Tetravalent Pa231 in Cs2ZrCl6  

Science Journals Connector (OSTI)

Paramagnetic resonance absorption at 3-cm wavelengths is observed for tetravalent Pa231 in a single crystal of Cs2ZrCl6 at helium temperatures. The observed spectra correspond to the allowed transitions (Sz, Iz?Sz±1, Iz) and the forbidden transitions (Sz, Iz?Sz±1, Iz?1) of a system described by the spin Hamiltonian, Hs=g?H·S+AI·S-gn??H·I, with S=12, I=32, |A|h=1578.6±1.4 Mc/sec, |g|=1.1423±0.0014, and |gn?|?8×10-4. The errors indicate a small deviation from isotropy. It is further observed that gn?g<0, indicating that if gn? is positive, as is strongly indicated by the nuclear shell model, then g is negative. An additional electron-nuclear double-resonance experiment is used to determine directly the nuclear magnetic moment ?(Pa231)=1.96 nuclear magnetons. This value includes a correction of 9% due to perturbations of an excited state about 1900 cm-1 above the ground-state doublet of Pa4+ in its octahedral crystal field. A lower frequency double-resonance experiment is used to measure the weak hyperfine interaction of the Pa4+ ion with its Cs133 neighbors, of order A??h?0.5 Mc/sec.

J. D. Axe; H. J. Stapleton; C. D. Jeffries

1961-03-15T23:59:59.000Z

390

Preparation of K2Ti6O13/TiO2 bio-ceramic on titanium substrate by micro-arc oxidation  

Science Journals Connector (OSTI)

K2Ti6O13/TiO2 bio-ceramic coatings are prepared successfully by micro-arc oxidation on titanium substrate in pure KOH electrolyte...2) and in KOH electrolyte with different concentrations (0.5–1.2 mol/L). The com...

Zhongwei Zhao; Xingyu Chen; Ailiang Chen; Guangsheng Huo…

2009-12-01T23:59:59.000Z

391

low Si p+-n junctions fabricated by focused ion beam Ga+ implantation through thin Ti and TiSi2 layers  

E-Print Network [OSTI]

metals and silicide layers, in conjunction with rapid thermal annealing (RTA) to complete metal silicides and it forms uniform thin films on Si. Most of the current research involving salicide+ implantation through Ti metal (ITM) and TiSi, (ITS) layers, followed by rapid thermal annealing (RTA), has been

Steckl, Andrew J.

392

Shape and strain-induced magnetization reorientation and magnetic anisotropy in thin film Ti/CoCrPt/Ti lines and rings  

E-Print Network [OSTI]

The contributions to the magnetic anisotropy of thin-film rings and lines of width 50 nm and above made from Ti(5?nm)/Co[subscript 0.66]Cr[subscript 0.22]Pt[subscript 0.12] (10 and 20 nm)/Ti (3 nm) with a perpendicular ...

Velazquez, D.

393

Investigation on the delaminated-pillared structure of TiO2-PILC synthesized by TiCl4 hydrolysis method  

Science Journals Connector (OSTI)

TiO2-PILCs were synthesized by the reaction between montmorillonite and acidic solutions of hydrolyzed TiCl4. Unlike commonly reported microporous pillared structure, a meso–microporous delaminated structure containing pillared fragments was observed in the resulting TiO2-PILC, based on the combined analyses of powder X-ray diffraction (XRD), nitrogen adsorption–desorption isotherms, chemical analysis, thermogravimetric (TG) and differential scanning calorimetry (DSC) analyses. Air-drying after ethanol extraction (EAD) is shown to be more effective than air-drying (AD) in preserving the delaminated structure in the resultant Ti-clay. A broad XRD peak at low 2? angle with a high d-spacing of ?6.6 nm was firstly reported and it was proposed to be correlated with the mesoporous delaminated structure rather than the (0 0 1) reflection of intercalated/pillared periodic structure. The resulting TiO2-PILC exhibits a good thermal stability as indicated by its surface area after calcination at 600 °C. Moreover, calcination above 300 °C results in the formation of nanocrystalline anatase in the TiO2-PILC, and the grain size of anatase increases with the increment of calcination temperature. However, no phase transformation from anatase to rutile was observed even under calcination at 1000 °C. These fundamental results provide new insights about the structure of TiO2-PILC synthesized by TiCl4 hydrolysis method.

Peng Yuan; Xiaoling Yin; Hongping He; Dan Yang; Linjiang Wang; Jianxi Zhu

2006-01-01T23:59:59.000Z

394

Wettability of Ti3SiC2 by Ag-Cu and Ag-Cu-Ti O. Dezellus,a*  

E-Print Network [OSTI]

ternary ceramics Mn+1AXn (where M corresponds to an early transition metal, A is an A-group element, and X of metals and ceramic properties [1]. Among these compounds, titanium silicon carbide (Ti3SiC2) has gained, the ternary carbide Ti3SiC2 has gained much attention due to its unique characteristics combining

Boyer, Edmond

395

Glass Ceramic Waste Forms for Combined CS+LN+TM Fission Products Waste Streams  

SciTech Connect (OSTI)

In this study, glass ceramics were explored as an alternative waste form for glass, the current baseline, to be used for immobilizing alkaline/alkaline earth + lanthanide (CS+LN) or CS+LN+transition metal (TM) fission-product waste streams generated by a uranium extraction (UREX+) aqueous separations type process. Results from past work on a glass waste form for the combined CS+LN waste streams showed that as waste loading increased, large fractions of crystalline phases precipitated upon slow cooling.[1] The crystalline phases had no noticeable impact on the waste form performance by the 7-day product consistency test (PCT). These results point towards the development of a glass ceramic waste form for treating CS+LN or CS+LN+TM combined waste streams. Three main benefits for exploring glass ceramics are: (1) Glass ceramics offer increased solubility of troublesome components in crystalline phases as compared to glass, leading to increased waste loading; (2) The crystalline network formed in the glass ceramic results in higher heat tolerance than glass; and (3) These glass ceramics are designed to be processed by the same melter technology as the current baseline glass waste form. It will only require adding controlled canister cooling for crystallization into a glass ceramic waste form. Highly annealed waste form (essentially crack free) with up to 50X lower surface area than a typical High-Level Waste (HLW) glass canister. Lower surface area translates directly into increased durability. This was the first full year of exploring glass ceramics for the Option 1 and 2 combined waste stream options. This work has shown that dramatic increases in waste loading are achievable by designing a glass ceramic waste form as an alternative to glass. Table S1 shows the upper limits for heat, waste loading (based on solubility), and the decay time needed before treatment can occur for glass and glass ceramic waste forms. The improvements are significant for both combined waste stream options in terms of waste loading and/or decay time required before treatment. For Option 1, glass ceramics show an increase in waste loading of 15 mass % and reduction in decay time of 24 years. Decay times of {approx}50 years or longer are close to the expected age of the fuel that will be reprocessed when the modified open or closed fuel cycle is expected to be put into action. Option 2 shows a 2x to 2.5x increase in waste loading with decay times of only 45 years. Note that for Option 2 glass, the required decay time before treatment is only 35 years because of the waste loading limits related to the solubility of MoO{sub 3} in glass. If glass was evaluated for similar waste loadings as those achieved in Option 2 glass ceramics, the decay time would be significantly longer than 45 years. These glass ceramics are not optimized, but already they show the potential to dramatically reduce the amount of waste generated while still utilizing the proven processing technology used for glass production.

Crum, Jarrod V.; Turo, Laura A.; Riley, Brian J.; Tang, Ming; Kossoy, Anna; Sickafus, Kurt E.

2010-09-23T23:59:59.000Z

396

High-Rate Seafood Consumers near Sellafield: Comparison of Conventional Assessments of 137Cs Intakes with the Results of Whole-Body Monitoring  

Science Journals Connector (OSTI)

...Radiation Protection Dosimetry Article High-Rate Seafood Consumers near Sellafield: Comparison of Conventional Assessments of 137Cs Intakes with the Results of Whole-Body Monitoring......

G.J. Hunt; D.R.P. Leonard; F.A. Fry

1989-03-01T23:59:59.000Z

397

Preparation of Highly Transparent TiO2-based Thin Film Photocatalysts by an Ion Engineering Method: Ionized Cluster Beam Deposition  

Science Journals Connector (OSTI)

Highly transparent TiO2 and TiO2-based binary oxide (TiO2/SiO2 and TiO2/B2O3) thin films of different TiO2 contents were successfully prepared by using an ion engineering technique as a dry process. These transpa...

Masato Takeuchi; Masakazu Anpo

2010-01-01T23:59:59.000Z

398

137Cs Inter-Plant Concentration Ratios Provide a Predictive Tool for Coral Atolls with Distinct Benefits Over Transfer Factors  

SciTech Connect (OSTI)

Inter-plant concentration ratios (IPCR), [Bq g{sup -1} {sup 137}Cs in coral atoll tree food-crops/Bq g{sup -1} {sup 137}Cs in leaves of native plant species whose roots share a common soil volume], can replace transfer factors (TF) to predict {sup 137}Cs concentration in tree food-crops in a contaminated area with an aged source term. The IPCR strategy has significant benefits relative to TF strategy for such purposes in the atoll ecosystem. IPCR strategy applied to specific assessments takes advantage of the fact tree roots naturally integrate 137Cs over large volumes of soil. Root absorption of {sup 137}Cs replaces large-scale, expensive soil sampling schemes to reduce variability in {sup 137}Cs concentration due to inhomogeneous radionuclide distribution. IPCR [drinking-coconut meat (DCM)/Scaevola (SCA) and Tournefortia (TOU) leaves (native trees growing on all atoll islands)] are log normally distributed (LND) with geometric standard deviation (GSD) = 1.85. TF for DCM from Enewetak, Eneu, Rongelap and Bikini Atolls are LND with GSD's of 3.5, 3.0, 2.7, and 2.1, respectively. TF GSD for Rongelap copra coconut meat is 2.5. IPCR of Pandanus fruit to SCA and TOU leaves are LND with GSD = 1.7 while TF GSD is 2.1. Because IPCR variability is much lower than TF variability, relative sampling error of an IPCR field sample mean is up 6- to 10-fold lower than that of a TF sample mean if sample sizes are small (10 to 20). Other IPCR advantages are that plant leaf samples are collected and processed in far less time with much less effort and cost than soil samples.

Robison, W L; Hamilton, T F; Bogen, K; Corado, C L; Kehl, S R

2007-07-17T23:59:59.000Z

399

Interlaboratory Comparisons of NbTi Critical Current Measurements  

SciTech Connect (OSTI)

We report on a multi-institute comparison of critical current data measured on a modern NbTi wire for the Large Hadron Collider (LHC), which has shown a standard deviation below 1% in critical current density spread in more than 1500 measurements. Interlaboratory comparisons on Nb{sub 3}Sn wires have shown ambiguities that could be attributable to strain related differences in critical current density, originating from differences in sample handling, reaction, and mounting techniques, or also to differences in the magnetic field and current calibrations between the institutes. A round robin test of a well characterized NbTi wire provides a baseline variance in critical current results that is presumed to be attributable only to differences in the characterization systems. Systematic differences on the order of 3.5% are found in the comparison. The most likely cause for the observed differences is a small diameter holder that brings the wire into a strain regime in which strain effects can no longer be ignored. A NbTi round robin test, when performed properly, will separate system differences from sample specific differences and provide laboratories with an opportunity to calibrate equipment against a standard measurement.

Godeke, A.; Turrioni, D.; Boutboul, T.; Cheggour, N.; Goodrich, L.F.; Ghosh, A.; Den Ouden, A.; Meinesz, M.

2009-08-16T23:59:59.000Z

400

137Cs(90Sr) and Pu isotopes in the Pacific Ocean sources & trends  

SciTech Connect (OSTI)

The main source of artificial radioactivity in the world`s oceans can be attributed to worldwide fallout from atmospheric nuclear weapons testing. Measurements of selected artificial radionuclides in the Pacific Ocean were first conducted in the 1960`s where it was observed that fallout radioactivity had penetrated the deep ocean. Extensive studies carried out during the 1973-74 GEOSECS provided the first comprehensive data on the lateral and vertical distributions of {sup 9O}Sr, {sup 137}Cs and Pu isotopes in the Pacific on a basin wide scale. Estimates of radionuclide inventories in excess of amounts predicted to be delivered by global fallout alone were attributed to close-in fallout and tropospheric inputs from early U.S. tests conducted on Bikini and Enewetak Atolls in the Equatorial Pacific. In general, levels of fallout radionuclides (including {sup 9O}Sr, {sup 137}Cs and Pu isotopes) in the surface waters of the Pacific Ocean have decreased considerably over the past 4 decades and are now much more homogeneously distributed. Resuspension and the subsequent deposition of fallout radionuclides from previously deposited debris on land has become an important source term for the surface ocean. This can be clearly seen in measurements of fallout radionuclides in mineral aerosols over the Korean Peninsula (Yellow dust events). Radionuclides may also be transported from land to sea in river runoff-these transport mechanisms are more important in the Pacific Ocean where large quantities of river water and suspended sands/fluvial sediments reach the coastal zone. Another unique source of artificial radionuclides in the Pacific Ocean is derived from the slow resolubilization and transport of radionuclides deposited in contaminated lagoon and slope sediments near U.S. and French test sites. Although there is a small but significant flux of artificial radionuclides depositing on the sea floor, > 80% of the total 239, {sup 240}Pu inventory and > 95% of the total {sup 137}Cs inventory remains in the water column. Studies conducted through the 1980`s appear to be consistent with earlier findings and indicate that radionuclide inventories in mid-northern latitudes are at least a factor of two above those expected from global fallout alone. The long term persistence of close-in and/or stratospheric fallout from nuclear weapons testing in the Marshall Islands still appears to be the only plausible explanation for this anomaly.

Hamilton, T.F., Millies-Lacrox, J.C. [Service Mixte de Securite Radologique, Mondhery (France); Hong, G.H. [Korea Ocean Research and Development Institute, Ansan (Korea)

1996-11-01T23:59:59.000Z

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


401

Ann bay lodyans 7 / se Bryant Freeman ("Tonton Liben") ki pare ti liv sa a  

E-Print Network [OSTI]

pou I pase akote. Ti djab la bare I: "Kwa kwa kwa! Ala chans m genyen jodi a. Mwen chita chita m, epi yon vyann vin jwenn mwen. Ki kote ou prale, ti neg?" Dyedone komanse tranble. Men li C^*M pran kouraj li ak 2 men, li pran chante pou ti djab... m pito pa vann." 2 Wa a karese Malis, li pwomet li tout pwoteksyon. Alafen, li louvri men Malis, li depoze san dola ladann. Le msye we bel fey lajan, li dako pou ba Wa a ti lanp la. Epi, nan denmen, Malis al achte yon vye bourik ak kob la...

Freeman, Bryant C., ed.

2000-01-01T23:59:59.000Z

402

Photoelectrochemical Water Splitting of Nitrogen and Hydrogen Treated P25 TiO2 Films  

E-Print Network [OSTI]

CdS and CdSe have been successfully employed in the sensitization of TiO 2 . Although sensitization and doping

Zavodivker, Liat Shari

2014-01-01T23:59:59.000Z

403

Oxygen-Isotope Exchange between CO2 and Solid Ti18O2  

Science Journals Connector (OSTI)

Oxygen-Isotope Exchange between CO2 and Solid Ti18O2 ... Analysis of the isotopic composition of the gases produced has revealed ... ...

Svatopluk Civis?; Martin Ferus; Pavel Kuba?t; Marke?ta Zukalova?; Ladislav Kavan

2011-05-17T23:59:59.000Z

404

Phase separation and charge localization in UHV-lithiated anatase TiO{sub 2} nanoparticles  

SciTech Connect (OSTI)

The insertion of lithium in anatase TiO{sub 2} nanoparticles under ultrahigh vacuum (UHV) conditions is studied using x-ray absorption spectroscopy (XAS) and resonant photoelectron spectroscopy (RPES) at the Ti L{sub 2,3} edge. It is demonstrated that XAS can be used to monitor the separation into an anatase phase and a lithium titanate phase of formal stoichiometry Li{sub 0.5}TiO{sub 2}. The initial state properties of the Ti 3d states of the lithium titanate phase are investigated using ab initio electronic structure calculations. The calculations show a correlation driven separation of Ti 3d states from the conduction band in agreement with previous studies. It is shown that Ti in different oxidation states (Ti{sup 3+} and Ti{sup 4+}) is formed as a direct consequence of the electron-electron interaction. RPES and XAS spectra confirm the presence of electronically inequivalent Ti sites. The site-sensitivity of the RPES spectra at selected electron binding energies is found to be consistent with the calculations.

Richter, J.H.; Henningsson, A.; Sanyal, B.; Karlsson, P.G.; Siegbahn, H.; Eriksson, O.; Sandell, A. [Department of Physics, Uppsala University, P.O. Box 530, S-751 21 Uppsala (Sweden); Andersson, M. P.; Uvdal, P. [Chemical Physics, Department of Chemistry, Lund University, P.O. Box 124, S-221 00 Lund (Sweden)

2005-06-15T23:59:59.000Z

405

Adsorption and Oxidation of Elemental Mercury over Ce-MnOx/Ti-PILCs  

Science Journals Connector (OSTI)

A series of innovative Ce–Mn/Ti-pillared-clay (Ce–Mn/Ti-PILC) catalysts combining the advantages of PILCs and Ce–Mn were investigated for elemental mercury (Hg0) capture at 100–350 °C in the absence of HCl in the flue gas. ... The catalyst characterization indicated that the 6%Ce-6%MnOx/Ti-PILC catalyst possessed a large specific surface area and high dispersion of Ce and Mn on the surface. ... The experimental results indicated that the 6%Ce-6%MnOx/Ti-PILC catalyst exhibited high Hg0 capture (>90%) at 100–350 °C. ...

Chuan He; Boxiong Shen; Jianhong Chen; Ji Cai

2014-06-23T23:59:59.000Z

406

Structure of epitaxial (Fe,N) codoped rutile TiO2 thin films...  

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

No evidence of structural disorder associated with a high concentration of oxygen vacancies is observed. Substitution of Fe for Ti could not be confirmed, although secondary...

407

Test of internal-conversion theory with measurements in Cs-134 and Ba-137  

E-Print Network [OSTI]

-ray areas 2717400(5300) 1712200(4400) 2633700(5100) 1904100(4600) 80Brm impurity K x rays (%) ?0.18(2) ?0.28(3) ?0.38(4) 122Sb impurity K x rays (%) ?0.066(2) ?0.292(8) ?0.056(2) 124Sb impurity K x rays (%) ?0.0088(4) ?0.0473(9) ?0.0074(3) 134Cs g...-Holland, Amsterdam 1958). [2] R. S. Hager and E. C. Seltzer, Nucl. Data, Sect. A 4, 1 (1968). [3] F. Ro?sel, H. M. Fries, K. Alder, and H. C. Pauli, At. Data Nucl. Data Tables 21, 91 (1978). [4] I. M. Band and M. B. Trzhaskovskaya, Tables of Gamma Ray Internal...

Nica, N.; Hardy, John C.; Iacob, V. E.; Rockwell, W. E.; Trzhaskovskaya, M. B.

2007-01-01T23:59:59.000Z

408

Parity nonconservation in Fr-like actinide and Cs-like rare-earth-metal ions  

Science Journals Connector (OSTI)

Parity-nonconservation (PNC) amplitudes are calculated for the 7s-6d3/2 transitions of the francium isoelectronic sequence (Fr, Ra+, Ac2+, Th3+, Pa4+, U5+, and Np6+) and for the 6s-5d3/2 transitions of the cesium isoelectronic sequence (Cs, Ba+, La2+, Ce3+, and Pr4+). We show in particular that isotopes of La2+, Ac2+, and Th3+ ions have strong potential in the search for new physics beyond the standard model: The PNC amplitudes are large, the calculations are accurate, and the nuclei are practically stable. In addition, 232Th3+ ions have recently been trapped and cooled [Campbell et al., Phys. Rev. Lett. 102, 233004 (2009)]. We also extend previous works by calculating the s-s PNC transitions in Ra+ and Ba+ and provide calculations of several energy levels, and electric dipole and quadrupole transition amplitudes for the Fr-like actinide ions.

B. M. Roberts; V. A. Dzuba; V. V. Flambaum

2013-07-15T23:59:59.000Z

409

Measurement of the 3D Born-Oppenheimer Potential of a Proton in a Hydrogen-Bonded System via Deep Inelastic Neutron Scattering: The Superprotonic Conductor Rb{sub 3}H(SO{sub 4}){sub 2}  

SciTech Connect (OSTI)

We report the first direct measurement of the proton 3-D Born-Oppenheimer potential in any material. The proton potential surfaces in the hydrogen-bonded superprotonic conductor Rb{sub 3}H(SO{sub 4}){sub 2} are extracted from the momentum distribution measured using Deep Inelastic Neutron Scattering (DINS). The potential has a single minimum along the bond direction, which accounts for the absence of the antiferroelectric transition seen in the deuterated material. The measured potential is in qualitative agreement with phenomenological double Morse potentials that have been used to describe hydrogen bonds in other systems.

Homouz, D.; Reiter, G. [Physics Department, University of Houston, Houston, Texas, 77204 (United States); Eckert, J. [LANSCE, Los Alamos National Laboratory, and University of California, Santa Barbara, California (United States); Mayers, J. [ISIS, Rutherford Appelton Laboratory, Chilton, Didcot, England (United Kingdom); Blinc, R. [Stefan Jozef Institut, Lubljana (Slovenia)

2007-03-16T23:59:59.000Z

410

Study of the Rabi splitting at the 5P{sub 3/2} {yields} 5D{sub 5/2,3/2} transitions in the {sup 87}Rb atom upon cascade excitation in a magnetooptical trap  

SciTech Connect (OSTI)

The level splitting appearing upon cascade excitation of the 5D{sub 5/2} and 5D{sub 3/2} levels of the {sup 87}Rb atom in a magnetooptical trap is studied experimentally. The 5S{sub 5/2} and 5P{sub 3/2} levels are coupled by a cooling laser field, the Rabi frequency being comparable with the rate of spontaneous decay of the 5P{sub 3/2} level. The experimental spectral profiles are compared with a theoretical model. (laser spectroscopy)

Akimov, A V; Tereshchenko, E O; Snigirev, S A; Samokotin, A Yu; Sokolov, A V; Sorokin, Vadim N [P N Lebedev Physical Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2010-02-28T23:59:59.000Z

411

Distribution of oceanic 137Cs from the Fukushima Dai-ichi Nuclear Power Plant simulated numerically by a regional ocean model  

Science Journals Connector (OSTI)

Radioactive materials were released to the environment from the Fukushima Dai-ichi Nuclear Power Plant as a result of the reactor accident after the Tohoku earthquake and tsunami of 11 March 2011. The measured 137Cs concentration in a seawater sample near the Fukushima Dai-ichi Nuclear Power Plant site reached 68 kBq L?1 (6.8 × 104 Bq L?1) on 6 April. The two major likely pathways from the accident site to the ocean existed: direct release of high radioactive liquid wastes to the ocean and the deposition of airborne radioactivity to the ocean surface. By analysis of the 131I/137Cs activity ratio, we determined that direct release from the site contributed more to the measured 137Cs concentration than atmospheric deposition did. We then used a regional ocean model to simulate the 137Cs concentrations resulting from the direct release to the ocean off Fukushima and found that from March 26 to the end of May the total amount of 137Cs directly released was 3.5 ± 0.7 PBq ((3.5 ± 0.7) × 1015 Bq). The simulated temporal change in 137Cs concentrations near the Fukushima Daini Nuclear Power Plant site agreed well with observations. Our simulation results showed that (1) the released 137Cs advected southward along the coast during the simulation period; (2) the eastward-flowing Kuroshio and its extension transported 137C during May 2011; and (3) 137Cs concentrations decreased to less than 10 Bq L?1 by the end of May 2011 in the whole simulation domain as a result of oceanic advection and diffusion. We compared the total amount and concentration of 137Cs released from the Fukushima Dai-ichi reactors to the ocean with the 137Cs released to the ocean by global fallout. Even though the measured 137Cs concentration from the Fukushima accident was the highest recorded, the total released amount of 137Cs was not very large. Therefore, the effect of 137Cs released from the Fukushima Dai-ichi reactors on concentration in the whole North Pacific was smaller than that of past release events such as global fallout, and the amount of 137Cs expected to reach other oceanic basins is negligible comparing with the past radioactive input.

Daisuke Tsumune; Takaki Tsubono; Michio Aoyama; Katsumi Hirose

2012-01-01T23:59:59.000Z

412

Ultraviolet and Visible Photochemistry of Methanol at 3D Mesoporous Networks: TiO2 and Au–TiO2  

Science Journals Connector (OSTI)

A higher excited-state electron density arises for UV-irradiated TiO2 aerogel relative to commercial nanoparticulate TiO2, indicating that 3D networked TiO2 more efficiently separates electron–hole pairs. ... For both UV and visible irradiation, the same light source was employed: a high-pressure 350-W mercury arc lamp (Oriel Corp.) equipped with a water filter to remove IR radiation. ... For visible irradiation, three bandpass filters (70 nm full-width at half-maximum transmission profile) were used with peak transmissions centered at 400, 500, or 550 nm. ...

Dimitar A. Panayotov; Paul A. DeSario; Jeremy J. Pietron; Todd H. Brintlinger; Lindsey C. Szymczak; Debra R. Rolison; John R. Morris

2013-05-23T23:59:59.000Z

413

An application of Ti-K X-ray absorption edges and fine structures to the study of substoichiometric titanium carbide TiC1-x  

E-Print Network [OSTI]

of substoichiometric titanium carbide TiC1-x V. Moisy-Maurice and C. H. de Novion C.E.A./IRDI/DMECN/DTech, Laboratoire des échantillons de TiC1-x, (0,5 ~ 1 - x ~ 0,97). Quand la teneur x en lacunes de carbone augmente, (i 4p du titane (situé à 10-15 eV au-dessus du niveau de Fermi EF dans TiC0,97) se déplace

Paris-Sud XI, Université de

414

Impacts of Radioactive 137Cs on Marine Bacterioplankton: Effects of the Fukushima Disaster on Hawaii's Kaneohe Bay Bacterial Communities  

E-Print Network [OSTI]

-Daiichi Nuclear Power Plant to emit 10 PBq of radiation2 , the largest ever release of anthropogenic radionuclides into the ocean4 . The main pollutant, 137 Cs, has a half-life of 30 years and will first hit the US territories

Heller, Paul

415

Technical article Wiley Handbook of Science and Technology for Homeland Security Article ID:CS29 Page 1  

E-Print Network [OSTI]

Technical article Wiley Handbook of Science and Technology for Homeland Security Article ID:CS29 Network, RFID, Embedded, Security, Privacy Abstract As embedded computer systems continue to explode and the design constraints posed by these systems that make security difficult. We summarize current research

Stankovic, John A.

416

THE DEPARTMENT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE, CS DIVISION Presents the Spring 2014 EECS Seminar Series  

E-Print Network [OSTI]

A In the era of "Big data", when we design mining and retrieval models for large data (e.g., in the orderTHE DEPARTMENT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE, CS DIVISION Presents the Spring 2014 large amount of data). Tradi onal mining and retrieval models tend to get more and more costly

Stanley, Kenneth O.

417

Computer Science Master's (M.Sc.) and Doctoral (Ph.D.) Programs www.cs.usask.ca/gradstudies  

E-Print Network [OSTI]

Computer Science Master's (M.Sc.) and Doctoral (Ph.D.) Programs www.cs.usask.ca/gradstudies Computer Science Master's (M.Sc.) and Doctoral (Ph.D.) Programs Expertise in computing is needed everywhere. Digital information processing has permeated all

Saskatchewan, University of

418

Security enhancements for FPGA-based MPSoCs: a boot-to-runtime protection flow for an embedded  

E-Print Network [OSTI]

Security enhancements for FPGA-based MPSoCs: a boot-to-runtime protection flow for an embedded solutions to securely boot a bitstream and the associated OS while runtime transactions are not protected. This work proposes a full boot-to-runtime protection flow of an embedded Linux kernel during boot

Paris-Sud XI, Université de

419

Brillouin light scattering anomalies and new phase transition in Cs5H3(SO4)4 crystals  

E-Print Network [OSTI]

by dielectric measurements [1,4], neutron scattering [5] and NMR spec- troscopy [6], and the vibration spectrum was investigated by IR, Raman, Brillouin and neutron scattering in a wide temperature range [7­10]. NeverthelessBrillouin light scattering anomalies and new phase transition in Cs5H3(SO4)4 crystals S

420

Advanced Electrodes for Solid Acid Fuel Cells by Platinum Deposition on CsH2PO4  

Science Journals Connector (OSTI)

Advanced Electrodes for Solid Acid Fuel Cells by Platinum Deposition on CsH2PO4 ... The unique characteristics of the CDP electrolyte pose several challenges to SAFC optimization, particularly in the area of cathode microstructure. ... 1% CO demonstrates the potential of this approach with optimized reforming catalysts and also the tolerance to CO poisoning at these elevated temps. ...

Alexander B. Papandrew; Calum R.I. Chisholm; Ramez A. Elgammal; Mustafa M. Özer; Strahinja K. Zecevic

2011-03-15T23:59:59.000Z

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


421

arXiv:1003.5447v2[cs.LO]14May2010 Relating Nominal and Higher-order  

E-Print Network [OSTI]

, nominal logic, higher-order abstract syn- tax This work has been supported by INRIA through the "Equipes]. Formalizing speci- fication based on higher-order abstract syntax requires a frame- work with devicesarXiv:1003.5447v2[cs.LO]14May2010 Relating Nominal and Higher-order Abstract Syntax Specifications

Paris-Sud XI, Université de

422

Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal # (presenting author) beal@cs.toronto.edu  

E-Print Network [OSTI]

Infinite Hidden Markov Models via the Hierarchical Dirichlet Process Matthew J. Beal # (presenting author) beal@cs.toronto.edu Yee Whye Teh + ywteh@eecs.berkeley.edu Michael I. Jordan + jordan model (iHMM) of Beal et al. [2]. The iHMM is a hidden Markov model (HMM) in which the number of hidden

Beal, Matt J.

423

Measurement of the 44Ti(alpha,p)47V reaction cross section, of relevance to gamma-ray observation of core collapse supernovae, using reclaimed 44Ti from radioactive waste  

E-Print Network [OSTI]

Measurement of the 44Ti(alpha,p)47V reaction cross section, of relevance to gamma-ray observation of core collapse supernovae, using reclaimed 44Ti from radioactive waste

Murphy, A; Davinson, T; Dressler, R; Fallis, J; Kankainen, A; Laird, A; Murphy, C; Seiffert, C; Schumann, D; Stowasser, T; Stora, T; Wang, C; Woods, P

2014-01-01T23:59:59.000Z

424

Effect of TiO2 Content on Ethanol Electrooxidation in Alkaline Media Using Pt Nanoparticles Supported on Physical Mixtures of Carbon and TiO2 as Electrocatalysts  

Science Journals Connector (OSTI)

Pt nanoparticles supported on physical mixtures of carbon and TiO2 (Pt/(C?+?TiO2) electrocatalyst) were tested for ethanol electrooxidation in alkaline media. The electrocatalysts were...2 mass ratios using boroh...

R. F. B. De Souza; G. S. Buzzo; J. C. M. Silva; E. V. Spinacé…

2014-04-01T23:59:59.000Z

425

137Cs in irrigation water and its effect on paddy fields in Japan after the Fukushima nuclear accident  

Science Journals Connector (OSTI)

Abstract There is concern that radiocesium deposited in the environment after the accident at the Fukushima Daiichi Nuclear Power Plant (FDNPP) in March 2011 will migrate to paddy fields through hydrological pathways and cause serious and long-lasting damage to the agricultural activities. This study was conducted in the Towa region of Nihonmatsu in the northern part of Fukushima Prefecture, Japan, (1) to quantify 137Cs in stream water used to irrigate paddy fields by separating the dissolved and particulate components in water samples and then fractionating the particulate components bonded in different ways using a sequential extraction procedure, and (2) to determine the amounts of radiocesium newly added to paddy fields in irrigation water relative to the amounts of radiocesium already present in the fields from the deposition of atmospheric fallout immediately after the FDNPP accident. Three catchments were studied, and the 137Cs activity concentrations in stream water samples were 79–198 mBq L? 1 under stable runoff conditions and 702–13,400 Bq L? 1 under storm runoff conditions. The residual fraction (F4, considered to be non-bioavailable) was dominant, accounting for 59.5–82.6% of the total 137Cs activity under stable runoff conditions and 69.4–95.1% under storm runoff conditions. The 137Cs newly added to paddy fields in irrigation water only contributed 0.03–0.05% of the amount already present in the soil (201–348 kBq m? 2). This indicates that the 137Cs inflow load in irrigation water is negligible compared with that already in the soil. However, the contribution from the potentially bioavailable fractions (F1 + F2 + F3) was one order of magnitude larger, accounting for 0.20–0.59%. The increase in the dissolved and soluble radiocesium fraction (F1) was especially large (3.0% to infinity), suggesting that radiocesium migration in irrigation water is increasing the accumulation of radiocesium in rice.

Natsuki Yoshikawa; Hitomi Obara; Marie Ogasa; Susumu Miyazu; Naoki Harada; Masanori Nonaka

2014-01-01T23:59:59.000Z

426

Simply AlF3-treated Li4Ti5O12 composite anode materials for stable...  

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

Li4Ti5O12 composite anode materials for stable and ultrahigh power lithium-ion batteries. Simply AlF3-treated Li4Ti5O12 composite anode materials for stable and ultrahigh...

427

Advanced Visible-Light-Driven Self-Cleaning Cotton by Au/TiO2/SiO2 Photocatalysts  

Science Journals Connector (OSTI)

Synergy of Low-Energy {101} and High-Energy {001} TiO2 Crystal Facets for Enhanced Photocatalysis ... Synergy of Low-Energy {101} and High-Energy {001} TiO2 Crystal Facets for Enhanced Photocatalysis ...

RongHua Wang; XiaoWen Wang; John H. Xin

2009-10-29T23:59:59.000Z

428

Preparation of TiO2(110)-(1x1) Surface via UHV Cleavage: An scanning...  

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

Preparation of TiO2(110)-(1x1) Surface via UHV Cleavage: An scanning tunneling microscopy study. Preparation of TiO2(110)-(1x1) Surface via UHV Cleavage: An scanning tunneling...

429

TiO2 nanoparticles on nitrogen-doped graphene as anode material for lithium ion batteries  

Science Journals Connector (OSTI)

Anatase TiO2...nanoparticles in situ grown on nitrogen-doped, reduced graphene oxide (rGO) have been successfully synthesized ... as an anode material for the lithium ion battery. The nanosized TiO2 particles wer...

Dan Li; Dongqi Shi; Zongwen Liu; Huakun Liu…

2013-04-01T23:59:59.000Z

430

Characteristics of V2O5/Ti-PILC catalyst for the reduction of NO by NH3  

Science Journals Connector (OSTI)

Titania-pillared clay (Ti-PILC) as a catalyst support exhibited peculiar physicochemical characteristics compared to that of titania for the reduction of NO by NH3. The morphological variation of Ti-PILC was examined with respect to the preparation method. For the freeze-dried Ti-PILC, the development of needle-like crystallites, which may reveal the formation of a “house-of-cards” structure by delamination of Ti-PILC, has been observed. Ti-PILC catalyst contains high surface acidity examined by NH3 TPD. Without the impregnation of WO3 and MoO3 on V2O5/Ti-PILC catalyst as a promoter, the catalyst exhibits competitive NO removal performance to a commercial V2O5-WO3/TiO2 catalyst. In addition, Ti-PILC catalyst also exhibits the strong sulfur tolerance mainly attributed to the unique pore structure of the catalyst.

Ho Jeong Chae; In-Sik Nam; Young Gul Kim; Hee Sung Yang; Hyun Chul Choi{rk; Seok Lyong Song{rk

1999-01-01T23:59:59.000Z

431

Atomic Layer Deposition of TiO2 on Aerogel Templates: New Photoanodes for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Atomic layer deposition was employed to coat the aerogel template conformally with various thicknesses of TiO2 with subnanometer precision. ... The TiO2-coated aerogel membranes were incorporated as photoanodes in dye-sensitized solar cells. ...

Thomas W. Hamann; Alex B. F. Martinson; Jeffrey W. Elam; Michael J. Pellin; Joseph T. Hupp

2008-06-18T23:59:59.000Z

432

On elongated stacking fault loops in TiAl  

SciTech Connect (OSTI)

Depending upon strain, load orientation, alloy composition and test temperature, the deformation microstructure of TiAl contains a varied density of stacking faults ribbons. The presence of these ribbons is correlated with that of superdislocations with 1/2{l_angle}112[square bracket] Burgers vector. They are elongated along any of the {l_angle}011[square bracket] directions. The present paper focuses on their formation mechanism, especially on the reasons which make that such dipolar defects, though intrinsically unstable, tend to exhibit a reasonably constant width.

Hug, G.; Veyssiere, P. [CNRS-ONERA, Chatillon (France)

1995-12-31T23:59:59.000Z

433

Stable atomic structure of NiTi austenite  

SciTech Connect (OSTI)

Nitinol (NiTi), the most widely used shape-memory alloy, exhibits an austenite phase that has yet to be identified. The usually assumed austenitic structure is cubic B2, which has imaginary phonon modes, hence it is unstable. We suggest a stable austenitic structure that “on average” has B2 symmetry (observed by x-ray and neutron diffraction), but it exhibits finite atomic displacements from the ideal B2 sites. The proposed structure has a phonon spectrum that agrees with that from neutron scattering, has diffraction spectra in agreement with x-ray diffraction, and has an energy relative to the ground state that agrees with calorimetry data.

Zarkevich, Nikolai A [Ames Laboratory; Johnson, Duane D [Ames Laboratory

2014-08-01T23:59:59.000Z

434

Studies on the sulfur poisoning of Ru-RuO{sub x}/TiO{sub 2} catalyst for the adsorption and methanation of carbon monoxide  

SciTech Connect (OSTI)

The effects of sulfur poisoning on the chemisorption and on the methanation of carbon monoxide over Ru/TiO{sub 2} catalyst were investigated by FTIR spectroscopy and volumetric gas adsorption measurements. The CS{sub 2} molecules are {eta}` bonded to Ru sites through one of the sulfur atoms and decompose to the constituent elements on thermal activation. Each S atom may deactivate 3 to 10 metal sites even at low coverages, the effect being more pronounced on the chemisorption of hydrogen. The deposited sulfur (and possibly carbon also) sterically hinders the formation of certain multicarbonyl and monocarbonyl species (vCO in 2055-2140 cm{sup -1} region), which otherwise transform to methane via surface methylene groups in the presence of chemisorbed hydrogen and are found to play an important role in the low-temperature methanation activity of the studied catalyst. The Ru-CO species giving rise to lower frequency vibrational bands are affected to a lesser extent. The presence of sulfur also results in the development of some new CO binding states which are weak and are identified with the CO and S coadsorbed at Ru sites of different oxidation states or of varying crystallographic nature. The CO adsorbed in these states is not reactive to hydrogen. 45 refs., 9 figs., 1 tab.

Kamble, V.S.; Londhe, V.P.; Gupta, N.M. [Bhambha Atomic Research centre, Bombay (India)] [and others] [Bhambha Atomic Research centre, Bombay (India); and others

1996-02-01T23:59:59.000Z

435

Effect of WC/TiC grain size ratio on microstructure and mechanical properties of WCTiCCo cemented carbides  

E-Print Network [OSTI]

of TiC powder as 1 lm. The microstructures of sintered WC­TiC­10 wt%Co cemented carbides were than that expected by modified Hall­Petch type equation. Transverse rupture strength of WC­20TiC­10 wt for decades [1]. Generally, cemented carbides are based on the WC­Co and some cubic carbide such as TiC, Ta

Hong, Soon Hyung

436

Site preferences of indium impurity atoms in intermetallics having Al3Ti and Al3Zr crystal structures  

E-Print Network [OSTI]

Site preferences of indium impurity atoms in intermetallics having Al3Ti and Al3Zr crystal-04843 (Metals Program) and Praveen Sinha Fund for Physics Research. L12 DO22 DO23 Cu3Au Al3Ti Al3Zr #12;Outline · Indium was doped in samples of Al3V and Al3Ti (Al3Ti structure) and Al3Zr (Al3Zr structure) by arc

Collins, Gary S.

437

Holographically Defined TiO2 Electrodes for Dye-Sensitized Solar Cells  

Science Journals Connector (OSTI)

Holographically Defined TiO2 Electrodes for Dye-Sensitized Solar Cells ... We analyze the morphological features of the h-TiO2 electrodes and consider their applicability to dye-sensitized solar cells (DSSCs). ... holographic lithography; solar cells ...

Woo-Min Jin; Ju-Hwan Shin; Chang-Yeol Cho; Ji-Hwan Kang; Jong Hyeok Park; Jun Hyuk Moon

2010-10-27T23:59:59.000Z

438

Prediction of a Dirac state in monolayer TiB2  

Science Journals Connector (OSTI)

We predict the existence of a Dirac state in a monolayer TiB2 sheet (m?TiB2), a two-dimensional metal diboride, based on first-principles calculations. The band structure of m?TiB2 is found to be characterized with anisotropic Dirac cones with the largest Fermi velocity of 0.57×106 m/s, which is about one-half of that of graphene. The Dirac point is located at the Fermi level between the K and ? points, with the Dirac states arising primarily from the d orbitals of Ti. Freestanding m?TiB2 exhibits a bending instability, so that a planar m?TiB2 needs to be stabilized on a substrate. The calculation of m?TiB2 on a h-BN substrate reveals a negligible influence of the h-BN substrate on the electronic properties of m?TiB2. Our findings extend the Dirac materials to metal diborides.

L. Z. Zhang; Z. F. Wang; S. X. Du; H.-J. Gao; Feng Liu

2014-10-03T23:59:59.000Z

439

Solar Energy Materials & Solar Cells 71 (2002) 261271 Photoelectric behavior of nanocrystalline TiO2  

E-Print Network [OSTI]

Solar Energy Materials & Solar Cells 71 (2002) 261­271 Photoelectric behavior of nanocrystalline Ti 100101, People's Republic of China e Synchrotron Radiation Laboratory at Institute of High Energy Physics. A sandwich-type solar cell fabricated by this dye-sensitized nanocrystalline TiO2 film generated 6:1 mA cm�2

Huang, Yanyi

440

A Low Noise NbTiN-based 850 GHz SIS Receiver for the  

E-Print Network [OSTI]

the 350 micron atmospheric window. This frequency band lies entirely above the energy gap of niobium (700 that consists of two Nb/AlN/NbTiN tunnel junctions, NbTiN thin-film microstrip tuning elements, and a Nb window was deployed at the CSO. It used a novel 1 µm thick Silicon Nitride membrane which support an all

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


441

Interaction of CO2 with Oxygen Adatoms on Rutile TiO2(110). ...  

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

CO2 with Oxygen Adatoms on Rutile TiO2(110). Interaction of CO2 with Oxygen Adatoms on Rutile TiO2(110). Abstract: The interactions of CO2 with oxygen adatoms (Oa’s) on...

442

Carbon monoxide annealed TiO2 nanotube array electrodes for efficient biosensor applications  

E-Print Network [OSTI]

Carbon monoxide annealed TiO2 nanotube array electrodes for efficient biosensor applications by anodic oxidation of titanium foil followed with O2 and CO annealing were employed as matrices consisted of Ti3+ defects with carbon-doping and exhibited well defined quasi-reversible cyclic voltammetric

Cao, Guozhong

443

Highly ordered TiO2 macropore arrays as transparent photocatalysts  

Science Journals Connector (OSTI)

Highly ordered transparent TiO2 macropore arrays were synthesized via a simple glass-clamping method at room temperature. The as-synthesized TiO2 macropore arrays show high transmittance in the visible light region and can be used ...

Yuan Dong; Junfeng Chao; Zhong Xie; Xin Xu; Zhuoran Wang; Di Chen

2012-01-01T23:59:59.000Z

444

Non-linear Damage Accumulation in Au-irradiated SrTiO3. | EMSL  

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

Damage Accumulation in Au-irradiated SrTiO3. Abstract: Ion-induced damage in strontium titanate (SrTiO3) has been investigated using 1.0 MeV Au ions at 150 K and room...

445

Surface studies of nitrogen implanted TiO2 Matthias Batzill a,*, Erie H. Morales b  

E-Print Network [OSTI]

.V. All rights reserved. Keywords: Titanium dioxide; Doping; Nitrogen; Surface science 1. IntroductionSurface studies of nitrogen implanted TiO2 Matthias Batzill a,*, Erie H. Morales b , Ulrike Diebold Available online 3 August 2007 Abstract Rutile TiO2(110) single crystals have been doped by nitrogen

Diebold, Ulrike

446

E-Print Network 3.0 - as-cast zr ti Sample Search Results  

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

page cl-733 Summary: par ajout de ZrOz(Y20,) e t de matdriaux monoxydes t e l s que Sic, Tic, TiN e t B4C. Un renforcement... 304 344 247 344 Composite A120,-ZrO,OY-TiN...

447

Preparation of BaTiO3 nanoparticles by combustion spray pyrolysis Sangjin Leea  

E-Print Network [OSTI]

], hydrothermal [6], and spray pyrolysis [7­9] have been developed to prepare stoichiometric, ultra- fine BaTiO3 process. Hydrothermal BaTiO3 powders [6] are usually a paraelectric cubic phase, which needs additional freedom from hydrocarbon-based chem- icals, and thus avoiding carbon-contamination problems. As a result

Messing, Gary L.

448

Surface Structure of TiO2011-2 1 T. J. Beck,1  

E-Print Network [OSTI]

.43.Bc, 68.47.Gh Titanium dioxide is a promising photocatalyst for the remediation of pollutants of metal oxides [9,10]. In bulk TiO2 the titanium atoms are surrounded by octahedra of six oxygen atoms of the model in Fig. 1.) Such undercoordinated Ti(5) atoms are preferred adsorption sites for a variety

Diebold, Ulrike

449

Li4Ti5O12 heattreated under nitrogen ambient with outstanding rate capabilities  

Science Journals Connector (OSTI)

The powders of spinel Li4Ti5O12 were prepared by heat treating the mixture of rutile TiO2 and Li acetate at 800°C for 3 h under a nitrogen atmosphere and, for comparison, under air as well. The powders ...

Rui Xu; Junrong Li; Zilong Tang; Zhongtai Zhang

2011-01-01T23:59:59.000Z

450

Candidato Situao/Financ. Regime Thiago Marques Toledo Aceito com bolsa de fomento TI  

E-Print Network [OSTI]

/Rec. Prop. TI Diogo GuimarĂŁes Rocha Aceito/Rec. Prop. TP Taissa Abdala Filgueiras de Sousa Aceito TI Michele Marcelo de Medeiros Soares Aceito/Rec. Prop. TP Sergio Luiz Rodrigues da Cunha Aceito/Rec. Prop. TP AntĂ´nio Francisco da Silva Junior Aceito/Rec. Prop. TP Carlos Lima Dias Aceito/Rec. Prop. TP Fabio da

Rodriguez, Noemi

451

Modulation of over 10{sup 14}?cm{sup ?2} electrons in SrTiO{sub 3}/GdTiO{sub 3} heterostructures  

SciTech Connect (OSTI)

We demonstrate charge modulation of over 10{sup 14}?cm{sup ?2} electrons in a two-dimensional electron gas formed in SrTiO{sub 3}/GdTiO{sub 3} inverted heterostructure field-effect transistors. Increased charge modulation was achieved by reducing the effect of interfacial region capacitances through thick SrTiO{sub 3} cap layers. Transport and device characteristics of the heterostructure field-effect transistors were found to match a long channel field effect transistor model. SrTiO{sub 3} impurity doped metal–semiconductor field effect transistors were also demonstrated with excellent pinch-off and current density exceeding prior reports. The work reported here provides a path towards oxide-based electronics with extreme charge modulation exceeding 10{sup 14}?cm{sup ?2}.

Boucherit, M.; Shoron, O.; Polchinski, C. [Department of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43210 (United States); Jackson, C. A.; Cain, T. A.; Buffon, M. L. C.; Stemmer, S. [Materials Department, University of California, Santa Barbara, California 93106-5050 (United States); Rajan, S. [Department of Electrical and Computer Engineering, The Ohio State University, Columbus, Ohio 43210 (United States); Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210 (United States)

2014-05-05T23:59:59.000Z

452

Small Column Ion Exchange Testing of Superlig 644 for Removal of 137Cs from Hanford Tank Waste Envelope C (Tank 241-AN-107)  

SciTech Connect (OSTI)

The current BNFL Inc. flowsheet for the pretreatment of the Hanford high-level tank wastes includes the use of Superlig{reg_sign} materials for removing {sup 137}Cs from the aqueous fraction of the waste. The Superlig materials applicable to cesium removal include the cesium-selective Superlig 632and Superlig 644. These materials have been developed and supplied by IBC Advanced Technologies, Inc., American Fork, Utah. This report describes the testing of the Superlig 644 ion exchange material in a small dual-column system. The bed volume of the lead column was 18.6 mL (L/D = 7), and the bed volume of the lag column was 15.9 mL (L/D = 6) during the loading phase. The sample processed was approximately 1.6 L of diluted waste ([Na{sup +}] = 4.84 M) from Tank 241-AN-107 (Envelope C). This sample had been previously treated for removal of Sr/transuranic (TRU) values and clarified in a single tube cross-flow filtration unit. All ion exchange process steps were tested, including resin-bed preparation, loading, feed displacement, water rinse, elution, eluant rinse, and resin regeneration. A summary of performance measures for both columns is shown in Table S1. The Cs {lambda} values represent a measure of the effective capacity of the SL-644 resin. The Cs {lambda} of 20 for the lead column is much lower than the estimated 150 obtained by the Savannah River Technology Center during Phase 1A testing. Equilibrium data obtained with batch contacts using the AN-107 Cs IX feed predicts a Cs {lambda} of 183. A Cs {lambda} for the lag column could not be determined due to insufficient breakthrough, but it appeared to work well and removed nearly all of the cesium not removed by the lead column. The low value for the lead column indicates that it did not perform as expected. This may have been due to air or gas in the bed that caused fluid channeling or blinding of the resin. The maximum decontamination factor (DF) for {sup 137}Cs listed in Table S1 is based on {sup 137}Cs concentration in the first samples collected from each column and the {sup 137}Cs concentration in the feed. The composite DF for {sup 137}Cs was 1,760, which provided an effluent with a {sup 137}Cs concentration of 8.7E-02 Ci/m{sup 3}. The {sup 137}Cs concentration is below the basis of design limit and is 7.2% of the contract limit for {sup 137}Cs.

DE Kurath; DL Blanchard; JR Bontha

2000-06-28T23:59:59.000Z

453

CdS quantum dot sensitized nanocrystalline Gd-doped TiO2 thin films for photoelectrochemical solar cells  

Science Journals Connector (OSTI)

CdS quantum dot sensitized Gd-doped TiO2 nanocrystalline thin films have been prepared by chemical method. X-ray diffraction analysis reveals that TiO2 and Gd-doped TiO2...nanocrystalline thin films are of anatas...

A. Ranjitha; N. Muthukumarasamy…

2013-08-01T23:59:59.000Z

454

Preparation of Al2O3/TiO2-containing Coating on Aluminium Alloys by Micro-arc Oxidation  

Science Journals Connector (OSTI)

TiO2-containing ceramic coatings were deposited on the surface of aluminium alloys by micro-arc oxidition. Surface and cross-section topograph of ceramic coating were observed using scanning electron microscopy (SEM). The phase composition of ceramic ... Keywords: Micro-arc oxidation, TiO2 additive, Al2O3/TiO2 phase, antiwear behavior

Cheng Gao; Jinyong Xu; Yusheng Lan; Yonghui Ma; Weixiang Su; Yajuan Liu

2010-03-01T23:59:59.000Z

455

Characterization for strontium titinateFe3O4 and TiNFe3O4 interfaces A. Lussiera)  

E-Print Network [OSTI]

Characterization for strontium titinateĂ?Fe3O4 and TiNĂ?Fe3O4 interfaces A. Lussiera) and Y. U The interface formation between different thicknesses of strontium titanate (SrTiO3) or titanium nitride Ti

Idzerda, Yves

456

Modelling the coarsening behaviour of TiC precipitates in high-strength, low-alloy steels  

E-Print Network [OSTI]

Modelling the coarsening behaviour of TiC precipitates in high-strength, low-alloy steels Jae Hoon­sheet steels rely on a dispersion of fine precipitates based on TiC, generated during the major phase changes of the stoichiometry of titanium and carbon. The purpose was to assess the influences of interface energy and Ti/C

Cambridge, University of

457

Hydrothermal Synthesis of Dy-Doped BaTiO3 Powders ERSIN E. OREN and A. CUNEYT TAS  

E-Print Network [OSTI]

. Hydrothermal processing sis method used and temperature, may exhibit four different of BaTiO3 powders has) are "ferroelectric." hydrothermal processing required a pH 12 in the aqueous BaTiO3 is of the tetragonal symmetryHydrothermal Synthesis of Dy-Doped BaTiO3 Powders ERSIN E. OREN and A. CUNEYT TAS Submicron

Tas, A. Cuneyt

458

Synthesis and structure of Al clusters supported on TiO2,,110...: A scanning tunneling microscopy study  

E-Print Network [OSTI]

Synthesis and structure of Al clusters supported on TiO2,,110...: A scanning tunneling microscopy, Texas 77843-3255 Received 14 October 1997; accepted 6 April 1998 Al clusters supported on TiO2(110) have been investigated using scanning tunneling microscopy. Al interacts strongly with the TiO2(110) surface

Goodman, Wayne

459

Comparative study on the corrosion behavior of TiNb and TMA alloys for dental application in various artificial solutions  

E-Print Network [OSTI]

Comparative study on the corrosion behavior of Ti­Nb and TMA alloys for dental application 2011 Keywords: Ti­Nb alloy TMA Corrosion Fluoride Artificial saliva The corrosion behavior of Ti the corrosion resistance of experimental alloys, with the corroded surface being further characterized

Zheng, Yufeng

460

Short-range order of low-coverage Ti/Al,,111...: Implications for hydrogen storage in complex metal hydrides  

E-Print Network [OSTI]

Short-range order of low-coverage Ti/Al,,111...: Implications for hydrogen storage in complex metal-coverage Ti atoms on Al 111 as a model surface system for transition metal doped alanate hydrogen storage the dissociative chemisorption of hydrogen in Ti-doped alanate storage materials. © 2007 American Institute

Ciobanu, Cristian

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


461

Comment on “Electron Source in Photoinduced Hydrogen Production on Pt-Supported TiO2 Particles”  

Science Journals Connector (OSTI)

Comment on “Electron Source in Photoinduced Hydrogen Production on Pt-Supported TiO2 Particles” ... We can suggest at least three more likely (than Ti4+) sources for their mysterious electron donor:? (1) an overlooked inorganic species, (2) Ti3+, and/or (3) organic impurities. ...

Craig L. Perkins; Michael A. Henderson; David E. McCready; Greg S. Herman

2000-12-05T23:59:59.000Z

462

On the remarkable optical and structural transformations in Mg-Ti-H thin  

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

On the remarkable optical and structural transformations in Mg-Ti-H thin On the remarkable optical and structural transformations in Mg-Ti-H thin films Speaker(s): Dana Borsa Date: October 16, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Venkat Srinivasan In searching for battery electrode materials, Mg-Ti-H thin films triggered much interest with its hydrogen storage capacity of approx. 4 times larger than that of conventional NiMH batteries [1]. Besides this, the same system has also absolutely remarkable optical properties [2]. Highly reflective in the metallic state, the films become highly absorbing upon hydrogen absorption. Mg0.80Ti0.20Hx thin films combine a high absorption (87% of the solar spectrum) with a low thermal emissivity (only 10%), while after removal of hydrogen Mg0.80Ti0.20 absorbs no more than 1/3 of the solar

463

The 40Ca(alpha,gamma)44Ti reaction in the energy regime of supernova nucleosynthesis  

E-Print Network [OSTI]

The 44Ti(t1/2 = 59 y) nuclide, an important signature of supernova nucleosynthesis, has recently been observed as live radioactivity by gamma-ray astronomy from the Cas A remnant. We investigate in the laboratory the major 44Ti production reaction, 40Ca(alpha,gamma)44Ti (E_cm = 0.6-1.2 MeV/u), by direct off- line counting of 44Ti nuclei. The yield, significantly higher than inferred from previous experiments, is analyzed in terms of a statistical model using microscopic nuclear inputs. The associated stellar rate has important astrophysical consequences, increasing the calculated supernova 44Ti yield by a factor ~2 over previous estimates and bringing it closer to Cas A observations.

H. Nassar; M. Paul; I. Ahmad; Y. Ben-Dov; J. Caggiano; S. Ghelberg; S. Goriely; J. P. Greene; M. Hass; A. Heger; A. Heinz; D. J. Henderson; R. V. F. Janssens; C. L. Jiang; Y. Kashiv; B. S. Nara Singh; A. Ofan; R. C. Pardo; T. Pennington; K. E. Rehm; G. Savard; R. Scott; R. Vondrasek

2006-01-11T23:59:59.000Z

464

Influence of Si content on microstructure of TiAl alloys  

SciTech Connect (OSTI)

A systematic study of four ternary TiAl-based alloys with constant Ti content of 52.2 at. % and variable Si content ranging from 0.3 to 2.7 at. % (Al in balance) was conducted. The alloys were prepared from elemental powders via a route including powder mixing, precompaction, cold extrusion, and reactive hot-isostatic pressing. All investigated alloys contain the intermetallic compounds {gamma}-TiAl, {alpha}{sub 2}-Ti{sub 3}Al, and {zeta}-Ti{sub 5}(Si,Al){sub 3}. The microstructure can be described as a duplex structure (i.e., lamella {gamma}/{alpha}{sub 2} regions distributed in a {gamma} matrix) containing {zeta} precipitates. With increasing Si content, the number of primary {zeta} precipitates increased and the {gamma} grain size became finer while the lamellar volume fraction decreased slightly.

Hsu, F.Y.; Klaar, H.J. [Aachen Univ. of Technology (Germany). Central Lab. of Electron Microscopy] [Aachen Univ. of Technology (Germany). Central Lab. of Electron Microscopy; Wang, G.X. [Zhejiang Univ., Hangzhou (China)] [Zhejiang Univ., Hangzhou (China); Dahms, M. [GKSS Research Center, Geesthacht (Germany)] [GKSS Research Center, Geesthacht (Germany)

1996-04-01T23:59:59.000Z

465

Spin-Lattice Relaxation of Tetravalent Pa231 in Cs2ZrCl6  

Science Journals Connector (OSTI)

The paramagnetic relaxation time was measured for Pa4+ in the cubic matrix Cs2(99% Zr, 1% Pa) Cl6 between 1.4 and 4.2°K, using pulse-saturation techniques. This complex, with its known and comparable spin-orbit and crystal field interactions, was chosen to determine whether the approximations for the orbit-lattice interaction, which are apparently valid for rare-earth ions, would remain so for ions of the 5f transition group. The data fit T1-1=A?T+C?T9, where A?=3.46±0.34 sec-1 deg-1 and C?=5.1×10-5±1.5×10-5 sec-1 deg-9. The static crystal field parameters A40?r4?=888 cm-1 and A60?r6?=41.9 cm-1 are used to estimate the coupling parameters |a4m?r4?| and |a6m?r6?| to the fourth- and sixth-degree spherical harmonics in the orbit-lattice interaction. The coupling to the second-degree spherical harmonics is treated in terms of a a single parameter |a20?r2?|. The speed of longitudinal sound waves in a polycrystalline sample of pure Cs2ZrCl6 was measured and found to be 4.5×105 cm/sec. Using this value for the effective phonon velocity, the theoretical relaxation rate is computed in terms of the single parameter |a20?r2?|. A comparison with the experimental direct-process coefficient A? indicates |a20?r2?|?17 000 cm-1, while comparison with the Raman coefficient C? yields |a20?r2?|?30 000 cm-1. A dynamic point-charge model, based upon a phonon-induced distrotion of the octahedron of Cl- ions surrounding the Pa4+ site, shows that |a20?r2?| should be approximately 23 000 cm-1 if it is to be consistent with the values of |a4m?r4?| and |a6m?r6?| obtained from the static crystal field parameters. This reasonable agreement supports the contention that estimating correct order-of-magnitude spin-lattice relaxation rates by Orbach's simple phenomenological approach is not restricted to the rare-earth series.

L. J. Raubenheimer; E. Boesman; H. J. Stapleton

1965-03-01T23:59:59.000Z

466

R ES0 L U TI(it; 1  

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

ES0 L U TI(it; 1\ (;. ______ ES0 L U TI(it; 1\ (;. ______ lH T the i\£ '-'yor of tl,e Ctty of AmarHlo i.lli hE'rretr\ IHlthortzeti ~.nd directed to execute on oot~lf of the City ci:~ n,l!lnllo a contract between the Vnited :3rates o.f j\ ITJerica, reoresented by the l:"nited. Statf'8 p, tomie Ener~y CommiluJion. Amari.no .f~rea (,(fice, and dest!5nsted as Contract '1 (2~)-2) 224.9 ar"d the Citj Dr /\r:rarillo. Te:k.1ll8. authorilol.n'l the use of certain oroperty located a.t the .Amarino ,,\ir J'o:rc. Base by the Atorr,ic J~n~r~.v Co.n.lmiesion of the United Staws.. .). .. ~ 1/ . * 13.' .. ·If? . Contract AT(29-2)2249 CONTRACT This CONTRACT, entered into effective as hereinafter provided, by and between THE UNITED STATES OF AMERICA (hereinafter called the "Government

467

Superplastic foaming of titanium and Ti-6Al-4V  

SciTech Connect (OSTI)

Solid-state foaming of metals can be achieved by hot-isostatic pressing of powders in presence of argon followed by expansion of the resulting high-pressure argon bubbles at ambient pressure and elevated temperature. This foaming technique was first demonstrated by Kearns et al. for Ti-6Al-4V, but is limited by its low creep rate and ductility, which lead to early cell wall fracture. The authors address these issues by performing the foaming step under superplastic conditions. Rather than using microstructural superplasticity (requiring fine grains which are difficult to achieve in porous powder-metallurgy materials), they used transformation superplasticity, which occurs at all grain sizes by biasing with a deviatoric stress (from the pore pressure) of internal stresses (from the allotropic mismatch during thermal cycling about the allotropic temperature range). As compared to control experiments performed under isothermal creep conditions, superplastic foaming under temperature cycling of unalloyed titanium and alloyed Ti-6Al-4V led to a significantly higher pore volume fraction and higher foaming rate.

Dunand, D.C. [Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering; Teisen, J. [Swiss Federal Inst. of Tech., Zuerich (Switzerland). Dept. of Materials

1998-12-31T23:59:59.000Z

468

Dilatometric study of critical behavior in CsPbCl3: Bicritical point at 41 °C  

Science Journals Connector (OSTI)

High-quality crystals of CsPbCl3 were grown by the Czochralski technique with automatic diameter control by the weighing method. A sample was prepared for high-resolution dilatometric measurements of the thermal expansion along a cubic [100] direction. The linear strain, ?L/L, was measured in the temperature interval 28–55 °C, and anomalies associated with three phase transitions were observed. Emphasis was put on the critical behavior in the close vicinity of the second-order II-III phase transition at 41 °C. The temperature variation of the anomalous thermal expansivity follows a power law ??t?-0.18 in the ordered phase. This is in excellent agreement with the expected behavior of the spontaneous strain in cubic perovskites at an n=2 bicritical point. Also the [100]-stress–temperature phase diagram was measured for the II-III transition. The phase boundary line for compressional stress ? is well described by Tc(?)-Tc(0)??1/? with ?=1.175, consistent with the unstressed transition being an n=2 bicritical point. This is the first observation of such bicriticality in a structural system.

T. H. Johansen; J. Feder; T. Jo/ssang

1988-04-01T23:59:59.000Z

469

Thermodynamics of TiO{sub x} in blast furnace-type slags  

SciTech Connect (OSTI)

Equilibrium studies between CaO-SiO{sub 2}-10 pct MgO-Al{sub 2}O{sub 3}-TiO{sub 1.5}-TiO{sub 2} slags, carbon-saturated iron, and a carbon monoxide atmosphere were performed at 1773 K to determine the activities of TiO{sub 1.5} and TiO{sub 2} in the slag. These thermodynamic parameters are required to predict the formation of titanium carbonitride in the blast furnace. In order to calculate the activity of titanium oxide, the activity coefficient of titanium in carbon-saturated iron-carbon-titanium alloys was determined by measuring the solubility of titanium in carbon-saturated iron in equilibrium with titanium carbide. The solubility and the activity coefficient of titanium obtained were 1.3 pct and 0.023 relative to 1 wt pct titanium in liquid iron or 0.0013 relative to pure solid titanium at 1773 K, respectively. Over the concentration range studied, the effect of the TiO{sub x} content on its activity coefficient is small. In the slag system studied containing 35 to 50 pct CaO, 25 to 45 pct SiO{sub 2}, 7 to 22 pct Al{sub 2}O{sub 3}, and 10 pct MgO, the activity coefficients of TiO{sub 1.5} and TiO{sub 2} relative to pure solid standard states range from 2.3 to 8.8 and from 0.1 to 0.3, respectively. Using thermodynamic data obtained, the prediction of the formation of titanium carbonitride was made. Assuming hypothetical TiO{sub 2}, i.e., total titanium in the slag expressed as TiO{sub 2}, and using the values of the activity coefficients of TiO{sub 1.5} and TiO{sub 2} determined, the equilibrium distribution of titanium between blast furnace-type slags and carbon-saturated iron was computed. The value of [pct Ti]/(pct TiO{sub 2}) ranges from 0.1 to 0.2.

Morizane, Y.; Ozturk, B.; Fruehan, R.J. [Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Materials Science and Engineering

1999-02-01T23:59:59.000Z

470

Consolidation Process in Near Net Shape Manufacturing of Armstrong CP-Ti/Ti-6Al-4V Powders  

SciTech Connect (OSTI)

This paper summarizes our recent efforts to develop the manufacturing technologies of consolidated net-shape components by using new low-cost commercially pure titanium (CP-Ti) and Ti-6Al-4V alloy powders made by the Armstrong process. Fabrication processes of net shape/ near net shape components, such as uniaxial die-pressing, cold isostatic pressing (CIP), sintering, roll compaction and stamping, have been evaluated. The press-and-sinter processing of the powders were systematically investigated in terms of theoretical density and microstructure as a function of time, pressure, and temperature. Up to 96.4% theoretical density has been achieved with the press-and-sinter technology. Tensile properties of the consolidated samples exhibit good ductility as well as equivalent yield/ultimate tensile strengths to those of fully consolidate materials, even with the presence of a certain amount of porosity. A consolidation model is also under development to interpret the powder deformation during processing. Net shape components made of the Armstrong powder can successfully be fabricated with clearer surface details by using press-and-sinter processing.

Yamamoto, Yukinori [ORNL; Kiggans, Jim [ORNL; Clark, Michael B [ORNL; Nunn, Stephen D [ORNL; Sabau, Adrian S [ORNL; Peter, William H [ORNL

2010-01-01T23:59:59.000Z

471

Triplet-singlet conversion in ultracold Cs{sub 2} and production of ground-state molecules  

SciTech Connect (OSTI)

We propose a process to convert ultracold metastable Cs{sub 2} molecules in their lowest triplet state into (singlet) ground-state molecules in their lowest vibrational levels. Molecules are first pumped into an excited triplet state, and the triplet-singlet conversion is facilitated by a two-step spontaneous decay through the coupled A {sup 1{Sigma}}{sub u}{sup +}-b {sup 3{Pi}}{sub u} states. Using spectroscopic data and accurate quantum chemistry calculations for Cs{sub 2} potential curves and transition dipole moments, we show that this process competes favorably with the single-photon decay back to the lowest triplet state. In addition, we demonstrate that this conversion process represents a loss channel for vibrational cooling of metastable triplet molecules, preventing an efficient optical pumping cycle down to low vibrational levels.

Bouloufa, Nadia; Aymar, Mireille; Dulieu, Olivier [Laboratoire Aime Cotton, CNRS, Universite Paris-Sud, Bat. 505, F-91405 Orsay (France); Pichler, Marin [Physics Department, Goucher College, Baltimore, Maryland 21204 (United States)

2011-02-15T23:59:59.000Z

472

Superfund record of decision (EPA Region 1): Otis Air National Guard, (AOC CS-1 (USCG)), Falmouth, MA, September 29, 1995  

SciTech Connect (OSTI)

The Massachusetts Military Reservation (MMR) on Cape Cod, Massachusetts, lies within the boundaries of the towns of Falmouth, Mashpee, Sandwich, and Bourne. The U.S. Coast Guard (USCG) Transmitter Station, designed Area of Contamination (AOC) CS-1 (USCG) is located adjacent to the eastern boundary of the MMR. The NGB, acting as executive agent of the USCG, and USEPA, with concurrence of the Commonwealth of Massachusetts, have determined that No Action is necessary to address the contamination at AOC CS-1 (USCG). However, groundwater monitoring will be performed at well WW-7 for a period of five years to provide information over time on the levels of volatile organic compounds (VOCs) detected in this well, and on the sporadic detection of inorganics in groundwater at this AOC.

NONE

1996-03-01T23:59:59.000Z

473

High-Resolution Soft X-Ray Spectral Analysis in the CK Region of Titanium Carbide (TiC) using the DV-X alpha Molecular Orbital Method  

E-Print Network [OSTI]

1 XRD pattern of the measured TiC powder sample. Figure 2XAS. Intensity (arb. units) TiC X-ray: Cu K? voltage: 40 kVintensity (arb. units) CK-XES TiC b a c HOPG e f CK-XAS TiC

Shimomura, Kenta

2010-01-01T23:59:59.000Z

474

Influence of the Operating Parameters on the Selective Catalytic Reduction of NO with Hydrocarbons Using Cu-Ion-Exchanged Titanium-Pillared Interlayer Clays (Ti-PILCs)  

Science Journals Connector (OSTI)

General Ti-PILC Characterization. Figure 1 shows the XRD patterns of the parent Ti-PILC calcined at different temperatures and of the original clay. ... Figure 1 X-ray diffraction (XRD) patterns for the Ti-PILC catalyst calcined at different temperatures. ... Figure 2 N2 adsorption?desorption isotherms for the Ti-PILC catalyst and the original clay. ...

José L. Valverde; Antonio de Lucas; Fernando Dorado; Amaya Romero; Prado B. García

2005-03-18T23:59:59.000Z

475

ASSESSMENT OF 90SR AND 137CS PENETRATION INTO REINFORCED CONCRETE (EXTENT OF 'DEEPENING') UNDER NATURAL ATMOSPHERIC CONDITIONS  

SciTech Connect (OSTI)

When assessing the feasibility of remediation following the detonation of a radiological dispersion device or improvised nuclear device in a large city, several issues should be considered including the levels and characteristics of the radioactive contamination, the availability of resources required for decontamination, and the planned future use of the city's structures and buildings. Currently, little is known about radionuclide penetration into construction materials in an urban environment. Knowledge in this area would be useful when considering costs of a thorough decontamination of buildings, artificial structures, and roads in an affected urban environment. Pripyat, a city substantially contaminated by the Chernobyl Nuclear Power Plant accident in April 1986, may provide some answers. The main objective of this study was to assess the depth of {sup 90}Sr and {sup 137}Cs penetration into reinforced concrete structures in a highly contaminated urban environment under natural weather conditions. Thirteen reinforced concrete core samples were obtained from external surfaces of a contaminated building in Pripyat. The concrete cores were drilled to obtain sample layers of 0-5, 5-10, 10-15, 15-20, 20-30, 30-40, and 40-50 mm. Both {sup 90}Sr and {sup 137}Cs were detected in the entire 0-50 mm profile of the reinforced cores sampled. In most of the cores, over 90% of the total {sup 137}Cs inventory and 70% of the total {sup 90}Sr inventory was found in the first 0-5 mm layer of the reinforced concrete. {sup 90}Sr had penetrated markedly deeper into the reinforced concrete structures than {sup 137}Cs.

Farfan, E.; Jannik, T.

2011-10-01T23:59:59.000Z

476

Near-UV Observations of CS29497-030: New Constraints on Neutron-Capture Nucleosynthesis Processes  

E-Print Network [OSTI]

Employing spectra obtained with the new Keck I HIRES near-UV sensitive detector, we have performed a comprehensive chemical composition analysis of the binary blue metal-poor star CS29497-030. Abundances for 29 elements and upper limits for an additional seven have been derived, concentrating on elements largely produced via neutron-capture nucleosynthesis. Included in our analysis are the two elements that define the termination point of the slow neutron-capture process, lead and bismuth. We determine an extremely high value of [Pb/Fe] = +3.65 +/- 0.07 (sigma = 0.13) from three features, supporting the single-feature result obtained in previous studies. We also detect Bi for the first time in a metal-poor star. Our derived Bi/Pb ratio is in accord with those predicted from the most recent FRANEC calculations of the slow neutron-capture process in low-mass AGB stars. We find that the neutron-capture elemental abundances of CS29497-030 are best explained by an AGB model that also includes very significant amounts of pre-enrichment of rapid neutron-capture process material in the protostellar cloud out of which the CS29497-030 binary system formed. Thus, CS29497-030 is both an ``r+s'' and ``extrinsic AGB'' star. Furthermore, we find that the mass of the AGB model can be further constrained by the abundance of the light odd-element [Na/Fe] which is sensitive to the neutron excess.

Inese I. Ivans; Christopher Sneden; Roberto Gallino; John J. Cowan; George W. Preston

2005-04-29T23:59:59.000Z

477

arXiv:1002.4996v1[cs.DM]26Feb2010 Triangular Self-Assembly  

E-Print Network [OSTI]

arXiv:1002.4996v1[cs.DM]26Feb2010 Triangular Self-Assembly Lila Kari Shinnosuke Seki Zhi Xu 5B7 {lila, sseki, zhi_xu}@csd.uwo.ca February 27, 2010 Abstract We discuss the self-assembly system in their laboratory by the method of self-assembly. One systematic study on this topic is the self-assembly of squares

Kari, Lila

478

Comparison of {sup 241}Am, {sup 239,240}Pu, and {sup 137}Cs concentrations in soil around Rocky Flats  

SciTech Connect (OSTI)

Gamma spectroscopy measurements were used to estimate concentrations of {sup 241}Am and {sup 137}Cs in soil profiles to depths of 21 cm at on-site and off-site locations around the Rocky Flats Environmental Technology Site and at regional background locations east of the Front Range between Colorado`s borders with New Mexico and Wyoming. Concentrations of these radionuclides were compared with concentrations of {sup 239,240}Pu in the same samples. Concentrations of {sup 241}Am in soil from depths of 0 to 3 cm decreased in an easterly direction from more than 5.3 kBq kg{sup {minus}1} 5 to 7 km away at a rate that was nearly proportional to the inverse square of distance. Deposits of {sup 137}Cs were ubiquitous, averaging 0.12 kBq kg{sup {minus}1} in soil from depths of 0 to 3 cm, but were unevenly distributed around Rocky Flats and the regional background locations. Deviations from the uniform exponential rate at which soil concentrations of {sup 137}Cs typically decreased with depth, {minus}0.25 cm{sup {minus}1} at undisturbed sites, enabled the authors to determine that about 10% of their sampling sites had been disturbed by erosion, tillage, or other factors. The mean rate at which {sup 239,240}Pu decreased with depth was about the same, {minus}0.23 cm{sup {minus}1}, throughout the study area. Soil concentrations of {sup 241}Am decreased with depth at a similar mean rate of {minus}0.22 cm{sup {minus}1} at locations close to the 903 pad where measurements were robust. Ratios between {sup 241}Am or {sup 239,240}Pu and {sup 137}Cs proved more useful for delineating the extent and pattern of contamination from Rocky Flats than did activity concentrations in soil.

Hulse, S.E.; Ibrahim, S.A.; Whicker, F.W.; Chapman, P.L. [Colorado State Univ., Fort Collins, CO (United States)

1999-03-01T23:59:59.000Z

479

Developing TiAIN Coatings for Intermediate Temperature-Solid Oxide Fuel Cell Interconnect Applications  

SciTech Connect (OSTI)

TiN-type coatings have potential to be used as SOFC interconnect coatings SOFC because of their low resistance and high temperature stability. In this research, various (Ti,Al)N coatings were deposited on stainless steels by filtered-arc method. ASR and XRD tests were conducted on these coatings, and SEM/EDAX analysis were conducted after ASR and XRD tests. SEM/EDAX analyses show that (Ti,Al)N remains stable at temperature up to 700°C. It is also indicated that Al has beneficial effect on the stability of TiN type coatings. At 900°C, (Ti-30Al)N is fully oxidized and some of (Ti-50Al)N coating still remains as nitride. The analyses on cross-sectional samples show that these coatings are effective barrier to the Cr migration. In summary, (Ti.Al)N coatings are good candidates for the SOFC interconnect applications at 700°C. The future directions of this research are to improve the stability of these coatings by alloy-doping and to develop multi-layer coatings.

Liu, X. (West Virginia University); Johnson, C.D.; Li, C. (West Virginia University); Xu, J. (West Virginia University); Cross, C.

2007-02-01T23:59:59.000Z

480

TiB2/Ni coatings on surface of copper alloy electrode prepared by electrospark deposition  

Science Journals Connector (OSTI)

In order to improve the lifespan of spot-welding electrodes used for welding zinc coated steel sheets, titanium diboride was deposited onto their surface after precoating nickel as an intermediate layer. The microstructures and phase compositions of TiB2 and Ni coatings were characterized by SEM and XRD. The coating hardness was measured using a microhardness tester. The results indicate that a satisfactory TiB2 coating is obtained as a result of the intermediate nickel layer acting as a good binder between the TiB2 coating and the copper alloy substrate. Owing to its capacity of deforming, the precoated nickel layer is dense and crack free, while cracks and pores are observed in the TiB2 coating. The hardness of the TiB2/Ni coating decreases with the increase of voltage and capacitance because of the diffusion of copper and nickel and the oxidation of the coating materials. Because of the good thermal and electrical conductivities and high hardness properties of TiB2, the deformation of the electrode with TiB2/Ni coating is reduced and its spot-welding life is by far prolonged than that of the uncoated one.

Cheng LUO; Xiang XIONG; Shi-jie DONG

2011-01-01T23:59:59.000Z

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


481

Transition metal atoms pathways on rutile TiO{sub 2} (110) surface: Distribution of Ti{sup 3+} states and evidence of enhanced peripheral charge accumulation  

SciTech Connect (OSTI)

Charge transfer between metal nanoparticles and the supported TiO{sub 2} surface is primarily important for catalytic applications as it greatly affects the catalytic activity and the thermal stability of the deposited nanoparticles on the surface. Herein, systematic spin-polarized density functional and HSE06 calculations are performed to evaluate the adsorption, diffusion, and charge state of several transition metal monomers on both stoichiometric and reduced rutile TiO{sub 2} (110) surface. Although the presence of oxygen vacancy (O{sub v}) increases the binding of Au, Pt and Pd on the surface, it weakens the interaction thus enhancing the diffusion for Fe, Co, Ni, Ag, and Cu adatoms on the surface. For pristine reduced surface, only a small portion (around 5%) of the excess electrons occupy the topmost surface, which are mainly delocalized at the second nearest and third nearest fivefold coordinated Ti (Ti{sub 5c}) atoms. Excess electrons populating at the Ti{sub 5c} atoms on the basal plane can be transferred to strongly electronegative adsorbates like Au and Pt thus enabling a moderate adsorption at this site, whereas no stable adsorption is found for other less electronegative transition metal adatoms (Ag, Cu, Fe, Co, Ni, and Pd) on the reduced surface and for all the adatoms on stoichiometric surface. This result clarifies the origin of the experimental observation of the adsorption of O{sub 2} and CO molecules at Ti{sub 5c} sites in connection with charge transfer. In addition, the spatial redistribution of the excess electrons around the O{sub v} upon the adsorption of the monomers is thoroughly examined. Our finding of an accumulation of excess electrons at the Ti{sub 5c} sites around the monomers explains the critical role of the perimeter interface of the deposited nanoparticles in promoting the adsorption and activation of reactants observed in experiments.

Cai Yongqing; Bai Zhaoqiang; Chintalapati, Sandhya; Feng Yuanping [Department of Physics, National University of Singapore, 2 Science Drive 3, Singapore 117542 (Singapore); Zeng Qingfeng [School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072 (China)

2013-04-21T23:59:59.000Z

482

Effect of crystal phases of titanium dioxide on adsorption performance of H2TiO3-lithium adsorbent  

Science Journals Connector (OSTI)

Abstract Different crystal phases of TiO2 were produced by calcinations of metatitanic acid at various temperatures. H2TiO3-lithium adsorbent was obtained from the acid-modified adsorbent precursor Li2TiO3 which was synthesized by a solid-phase reaction between TiO2 and LiOH·H2O. Effects of crystal phases of TiO2 on the pull-out rate of Li+ from Li2TiO3 and adsorption properties of lithium adsorbent were studied. The results indicate that anatase structure rather than rutile reacted with LiOH·H2O aids the extraction of Li+ and the adsorption performance of lithium adsorbent. The maximum Li+ drawn out ratio from Li2TiO3 reaches 98.69%, and the maximum saturated adsorptive capacity comes up to 39.2 mg g?1.

Liyuan Zhang; Dali Zhou; Gang He; Fanhou Wang; Jiabei Zhou

2014-01-01T23:59:59.000Z

483

A novel catalyst coated membrane embedded with Cs-substituted phosphotungstates for proton exchange membrane water electrolysis  

Science Journals Connector (OSTI)

Abstract Catalyst coated membrane (CCM) is the core component of proton exchange membrane (PEM) water electrolysis and the main place for electrochemical reaction and mass transfer. Its properties directly affect the performance of PEM water electrolysis. Aiming at decreasing the polarization loss and the ohmic loss, a novel CCM embedded with Cs1.5HPA in the skeleton of the Nafion® ionomer and the Nafion® membrane was prepared and possessed functionality of improved protonic conductivity. Meanwhile, the Cs1.5HPA-Nafion ionomer content in the catalyst layers was further optimized. The SEM, EDS and pore volume distribution measurement showed that the Cs1.5HPA embedded in the CCM without agglomeration and the micropore and mesopore were well distributed in the catalyst layer. Furthermore, \\{CCMs\\} were tested in a PEM water electrolyser at 80 °C, beneficial effects on both the Tafel slope and the iR loss were obtained due to the improved protonic conductivity as well as the appropriate pore structure and increased specific pore volume. The performance of the electrolyser cell was obviously improved with the novel CCM. The highest cell performance of 1.59 V at 2 A cm?2 was achieved at 80 °C. At 35 °C and 300 mA cm?2, the cell showed good durability within the test period of up to 570 h.

Gaoyang Liu; Junyuan Xu; Yituo Wang; Juming Jiang; Xindong Wang

2014-01-01T23:59:59.000Z

484

Effect of Potassium on Uptake of 137Cs in Food Crops Grown on Coral Soils: Annual Crops at Bikini Atoll  

SciTech Connect (OSTI)

In 1954 a radioactive plume from the thermonuclear device code named BRAVO contaminated the principal residential islands, Eneu and Bikini, of Bikini Atoll (11{sup o} 36 minutes N; 165{sup o} 22 minutes E), now part of the Republic of the Marshall Islands. The resulting soil radioactivity diminished greatly over the three decades before the studies discussed below began. By that time the shorter-lived isotopes had all but disappeared, but strontium-90 ({sup 90}Sr), and cesium-137, ({sup 137}Cs) were reduced by only one half-life. Minute amounts of the long-lived isotopes, plutonium-239+240 ({sup 239+240}Pu) and americium-241 ({sup 241}Am), were present in soil, but were found to be inconsequential in the food chain of humans and land animals. Rather, extensive studies demonstrated that the major concern for human health was {sup 137}Cs in the terrestrial food chain (Robison et al., 1983; Robison et al., 1997). The following papers document results from several studies between 1986 and 1997 aimed at minimizing the {sup 137}Cs content of annual food crops. The existing literature on radiocesium in soils and plant uptake is largely a consequence of two events: the worldwide fallout of 1952-58, and the fallout from Chernobyl. The resulting studies have, for the most part, dealt either with soils containing some amount of silicate clays and often with appreciable K, or with the short-term development of plants in nutrient cultures.

Stone, E R; Robinson, W

2002-02-01T23:59:59.000Z

485

Novel Au-TiC Catalysts for CO Oxidation and Desulfurization Processes  

SciTech Connect (OSTI)

Recent articles dealing with the physical and chemical properties of novel Au-TiC catalysts are reviewed. High-resolution photoemission, scanning tunneling microscopy and first-principles periodic density-functional calculations were used to study the deposition of gold on a TiC(0 0 1) surface. Gold grows forming two-dimensional (very low coverage) and three-dimensional (medium and large coverage) islands on the carbide substrate. A positive shift in the binding energy of the C 1s core level is observed after the deposition of Au on TiC(0 0 1). The results of the density-functional calculations corroborate the formation of Au-C bonds. In general, the bond between Au and the TiC(0 0 1) surface exhibits very little ionic character, but there is a substantial polarization of electrons around Au that facilitates bonding of the adatoms with electron-acceptor molecules (CO, O{sub 2}, C{sub 2}H{sub 4}, SO{sub 2}, thiophene, etc.). Experimental measurements indicate that Au/TiC(0 0 1) is a very good catalysts for the oxidation of CO, the destruction of SO{sub 2} and the hydrodesulfurization of thiophene. At temperatures below 200 K, Au/TiC(0 0 1) is able to perform the 2CO + O{sub 2} {yields} 2CO{sub 2} reaction and the full decomposition of SO{sub 2}. Furthermore, in spite of the very poor hydrodesulfurization performance of TiC(0 0 1) or Au(1 1 1), a Au/TiC(0 0 1) surface displays a hydrodesulfurization activity higher than that of conventional Ni/MoS{sub x} catalysts. Metal carbides are excellent supports for enhancing the chemical reactivity of gold. The Au/TiC system is more chemically active than systems generated by depositing Au nanoparticles on oxide surfaces.

J Rodriguez; P Liu; Y Takahashi; F Vines; L Feria; E Florez; K Nakamura

2011-12-31T23:59:59.000Z

486

Formation of Ti-B surface alloys by excimer laser mixing  

SciTech Connect (OSTI)

We have formed a surface Ti-B alloy by excimer laser mixing of a single B layer on a Ti-6Al-4V alloy substrate. Rutherford backscattering spectroscopy indicates a uniform B:Ti ratio of approximately 0.7 in the surface layer. A Boron layer 60 nm thick resulted in an alloy layer approximately 200 nm thick. There is little indication, by either Auger electron spectroscopy or nuclear reaction analysis, of substantial oxygen incorporation in the surface alloy despite the fact that the processing was done in air. Transmission electron microscopy of the surface alloy shows a completely amorphous surface layer underlain by a martensitic structure.

Jervis, T.R.; Nastasi, M.; Hirvonen, J.P.; Zocco, T.G.

1990-01-01T23:59:59.000Z

487

Initial reactions in Ti{endash}Si bilayers: New indications from in situ measurements  

SciTech Connect (OSTI)

The interactions occurring in a Ti{endash}Si bilayer have been investigated by in situ resistance measurements and the reaction products have been analyzed by complementary techniques, such as x-ray diffraction, Auger electron spectroscopy, and MeV {sup 4}He{sup +} Rutherford backscattering. The measurements were performed by heating the samples at a constant rate in the 5{endash}425{degree}C/min range. The samples are 60 nm of titanium sputter deposited on 250 nm of a silicon film deposited by chemical vapor technique; the bilayers were placed on 650 nm of SiO{sub 2}, thermally grown on p-type {l_angle}100{r_angle} silicon wafers. Samples were also prepared by reactively depositing 25 nm of TiN on the Ti film. The TiN cap, deposited without breaking the vacuum, protects the metal films from contaminants, namely oxygen, during handling and heat treatments. It has been shown that, at temperatures around 400{degree}C and before any massive Ti{endash}Si interaction, the resistance increases. This effect, attributed in the literature to the silicon diffusion in the metal film, is due to oxygen, generally contained in the annealing ambient, which diffuses in the Ti film. The Ti{endash}Si reaction produces a decrease in the value of resistance; the first decrease, generally attributed to the formation of a C49{endash}TiSi{sub 2} phase, is due to the growth of an amorphous compound having a graded in-depth composition between Ti{sub 5}Si{sub 3} and TiSi. The activation energy for such formation is 2.8{+-}0.1 eV. At higher temperatures C49{endash}TiSi{sub 2} starts to form, more likely between the silicon and the amorphous layer. The formation of silicide induces a segregation of oxygen in the unreacted Ti film, thus slowing down the growth of silicide. {copyright} 2001 American Institute of Physics.

Cocchi, R.; Giubertoni, D.; Ottaviani, G.; Marangon, T.; Mastracchio, G.; Queirolo, G.; Sabbadini, A.

2001-06-01T23:59:59.000Z

488

Development and scale-up of the low density core process for Ti-64  

SciTech Connect (OSTI)

The Low Density Core (LDC) process is a method for making metallic structures with solid surfaces covering a porous core. The development of the LDC process for making Ti-64 sheet based structures is described. Sheets {approximately}2000 x 1200 x 4 mm{sup 3} have been made with {approximately}40 vol.% core porosity levels, and several forming techniques have been demonstrated. The LDC billet breakdown and forming behavior was found to be similar to conventional Ti-64 processes, so LDC Ti-64 sheet has the advantage that it can be fabricated into structures using well-established methods.

Schwartz, D.S.; Shih, D.S.; Lederich, R.J.; Martin, R.L.; Deuser, D.A. [Boeing Co., St. Louis, MO (United States)

1998-12-31T23:59:59.000Z

489

Electron Source in Photoinduced Hydrogen Production on Pt-supported TiO2 Particles  

Science Journals Connector (OSTI)

Electron Source in Photoinduced Hydrogen Production on Pt-supported TiO2 Particles ... After recovering the TiO2/Pt particles used in the long-term reaction, they were reused in a photocatalytic H+ reduction by adding methanol as an electron donor, but no H2 production was observed showing that the TiO2/Pt particles have lost their photocatalytic activity after the long-term reaction. ... A 100 W high-pressure Hg lamp was used as a light source. ...

Toshiyuki Abe; Eiji Suzuki; Kentaro Nagoshi; Kohichi Miyashita; Masao Kaneko

1999-02-04T23:59:59.000Z

490

High energy second-harmonic generation of Nd:glass laser radiation with large aperture CsLiB6O10 crystals  

Science Journals Connector (OSTI)

We have demonstrated the generation of a high-energy green laser pulse using large aperture CsLiB6O10 (CLBO) crystals for the first time to our knowledge. A pulsed energy of 25 J at...

Kiriyama, Hiromitsu; Inoue, Norihiro; Yamakawa, Koichi

2002-01-01T23:59:59.000Z

491

Current Concentration of Artificial Radionuclides and Estimated Radiation Doses from 137Cs around the Chernobyl Nuclear Power Plant, the Semipalatinsk Nuclear Testing Site, and in Nagasaki  

Science Journals Connector (OSTI)

......137Cs around the Chernobyl Nuclear Power Plant, the Semipalatinsk Nuclear Testing Site, and in Nagasaki...the Chernobyl accident and nuclear tests at SNTS were simultaneously...from sev- eral statistical datasets, as there were no detailed......

Yasuyuki Taira; Naomi Hayashida; Gopalganapathi M. Brahmanandhan; Yuji Nagayama; Shunichi Yamashita; Jumpei Takahashi; Alexander Gutevitc; Alexander Kazlovsky; Marat Urazalin; Noboru Takamura

2011-01-01T23:59:59.000Z

492

Superprotonic Phase Transition in CsH(PO3H) Calum R. I. Chisholm, Ryan B. Merle, Dane A. Boysen, and Sossina M. Haile*  

E-Print Network [OSTI]

and like typical salts of phosphorous acid, it contains the tetrahedral group PO3H.12 The overall chemical) was synthesized from aqueous solutions of cesium carbonate and phosphorous acid in which the Cs:PO3H mole ratio

493

Fabrication of TiO{sub 2} nanocrystallized glass  

SciTech Connect (OSTI)

Nanocrystallization of rutile and anatase was observed in a CaO-B{sub 2}O{sub 3}-Bi{sub 2}O{sub 3}-Al{sub 2}O{sub 3}-TiO{sub 2} crystallized glass. The color of the present crystallized glass was changed by the heat-treatment temperature, and x-ray diffraction (XRD) patterns of the crystallized glass show that the apparent color change is correlated with the formation of titania nanocrystallites. The particle size of crystallites observed in the transmission electron microscope image is comparable to that measured by XRD pattern. In addition, a large change of refractive index between the rutile particles and glass matrix, 0.8 or larger, was obtained. The present titania crystallized glass will be not only a photocatalytic material but also a promising candidate for random lasing devices.

Masai, Hirokazu; Fujiwara, Takumi; Mori, Hiroshi; Komatsu, Takayuki [Department of Applied Physics, Tohoku University, 6-6-05 Aoba, Sendai 980-8579 (Japan); Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka 940-2188 (Japan)

2007-02-19T23:59:59.000Z

494

Regulation of the PDK4 Isozyme by the Rb-E2F1 Complex*S Received for publication,March 27, 2008, and in revised form, July 24, 2008 Published, JBC Papers in Press,July 30, 2008, DOI 10.1074/jbc.M802418200  

E-Print Network [OSTI]

Regulation of the PDK4 Isozyme by the Rb-E2F1 Complex*S Received for publication,March 27, 2008-induced diabetes. Here, we dem- onstrate that E2F1 directly regulates the gene encoding PDK4 (pyruvate sen- sitivity to insulin stimulation. Consistently, enforced E2F1 expression up-regulates PDK4 levels

495

Molecular beam epitaxial growth and characterization of mixed (Ti,Nb)O{sub 2} rutile films on TiO{sub 2}(100)  

SciTech Connect (OSTI)

Epitaxial films of mixed (Nb,Ti)O{sub 2} rutile have been grown on TiO{sub 2}(100) rutile at 600{degree}C by molecular beam epitaxy. These films grow in a laminar fashion for Nb mole fractions up to {approximately}0.10. In addition, reflection high-energy and low-energy electron diffraction, along with x-ray photoelectron diffraction and Rutherford backscattering reveal that the overlayers possess excellent long- and short-range structure order up to 10 at.{percent}. However, strain-induced disorder becomes prevalent for higher Nb mole fractions, and the surfaces roughen and become defected accordingly. X-ray photoelectron diffraction and Rutherford backscattering reveal that Nb atoms substitutionally incorporate at cation sites in the rutile lattice for all Nb mole fractions investigated, leading to a mixed rutile Nb{sub {ital x}}Ti{sub 1{minus}{ital x}}O{sub 2} phase. Analysis of Nb 3{ital d} and Ti 2{ital p} core-level binding energies reveals that the oxidation state of both Ti and Nb is +4. {copyright} {ital 1996 American Vacuum Society}

Chambers, S.A.; Gao, Y.; Thevuthasan, S.; Liang, Y. [Environmental Molecular Sciences Laboratory, Pacific Northwest Laboratory, Richland, Washington 99352 (United States)] [Environmental Molecular Sciences Laboratory, Pacific Northwest Laboratory, Richland, Washington 99352 (United States); Shivaparan, N.R.; Smith, R.J. [Department of Physics, Montana State University, Bozeman, Montana 59717 (United States)] [Department of Physics, Montana State University, Bozeman, Montana 59717 (United States)

1996-05-01T23:59:59.000Z

496

The investigation of die-pressing and sintering behavior of ITP CP-Ti and Ti-6Al-4V powders  

SciTech Connect (OSTI)

This paper investigated the die-pressing and sintering behavior of the low-cost CP-Ti and Ti-6Al- 4V powders made by the Armstrong Process . The Armstrong powders have an irregular coral like, dendritic morphology, with a dendrite size of approximately 2-5 m. As-received as well as milled powders were uniaxially pressed at designated pressures up to 690 MPa to form disk samples with different aspect ratios. In the studied pressure range, an empirical powder compaction equation was applied to linearize the green density pressure relationship, and powder compaction parameters were obtained. The Armstrong Ti-64 powder exhibited a significantly higher sinterability than the CP-Ti powder. This was explained to be due to the higher diffusivity of V at the sintering temperature. The Ti-64 samples with a green density of 71.0% increased to 99.6% after sintering at 1300oC for 1 hour. An ex-situ technique was used to track the powder morphology change before and after sintering.

Chen, Wei [ORNL; Yamamoto, Yukinori [ORNL; Peter, William H [ORNL; Clark, Michael B [ORNL; Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Muth, Thomas R [ORNL; Blue, Craig A [ORNL; Williams, James C [Ohio State University; Fuller, Brian [International Titanium Powder; Akhtar, Kamal [International Titanium Powder

2012-01-01T23:59:59.000Z

497

Stoichiometry-driven metal-to-insulator transition in NdTiO{sub 3}/SrTiO{sub 3} heterostructures  

SciTech Connect (OSTI)

By controlling stoichiometry via a hybrid molecular beam epitaxy approach, we report on the study of thin film growth and the electronic transport properties of phase-pure, epitaxial NdTiO{sub 3}/SrTiO{sub 3} heterostructures grown on (001) (La{sub 0.3}Sr{sub 0.7})(Al{sub 0.65}Ta{sub 0.35})O{sub 3} (LSAT) substrates as a function of cation stoichiometry in NdTiO{sub 3}. Despite the symmetry mismatch between bulk NdTiO{sub 3} and the substrate, NdTiO{sub 3} films grew in an atomic layer-by-layer fashion over a range of cation stoichiometry; however amorphous films resulted in cases of extreme cation non-stoichiometry. Temperature-dependent sheet resistance measurements were consistent with Fermi-liquid metallic behavior over a wide temperature range, but revealed a remarkable crossover from metal-to-insulator (M-I) type behavior at low temperatures for all compositions. A direct correlation between cation stoichiometry, transport behavior, and the temperature of M-I transition is established.

Xu, Peng; Phelan, Daniel; Seok Jeong, Jong; Andre Mkhoyan, K.; Jalan, Bharat, E-mail: bjalan@umn.edu [Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

2014-02-24T23:59:59.000Z

498

Determination of absorbed dose to water around a clinical HDR {sup 192}Ir source using LiF:Mg,Ti TLDs demonstrates an LET dependence of detector response  

SciTech Connect (OSTI)

Purpose: Experimental radiation dosimetry with thermoluminescent dosimeters (TLDs), calibrated in a {sup 60}Co or megavoltage (MV) photon beam, is recommended by AAPM TG-43U1for verification of Monte Carlo calculated absorbed doses around brachytherapy sources. However, it has been shown by Carlsson Tedgren et al.[Med. Phys. 38, 5539-5550 (2011)] that for TLDs of LiF:Mg,Ti, detector response was 4% higher in a {sup 137}Cs beam than in a {sup 60}Co one. The aim of this work was to investigate if similar over-response exists when measuring absorbed dose to water around {sup 192}Ir sources, using LiF:Mg,Ti dosimeters calibrated in a 6 MV photon beam. Methods: LiF dosimeters were calibrated to measure absorbed dose to water in a 6 MV photon beam and used to measure absorbed dose to water at distances of 3, 5, and 7 cm from a clinical high dose rate (HDR) {sup 192}Ir source in a polymethylmethacrylate (PMMA) phantom. Measured values were compared to values of absorbed dose to water calculated using a treatment planning system (TPS) including corrections for the difference in energy absorption properties between calibration quality and the quality in the users'{sup 192}Ir beam and for the use of a PMMA phantom instead of the water phantom underlying dose calculations in the TPS. Results: Measured absorbed doses to water around the {sup 192}Ir source were overestimated by 5% compared to those calculated by the TPS. Corresponding absorbed doses to water measured in a previous work with lithium formate electron paramagnetic resonance (EPR) dosimeters by Antonovic et al. [Med. Phys. 36, 2236-2247 (2009)], using the same irradiation setup and calibration procedure as in this work, were 2% lower than those calculated by the TPS. The results obtained in the measurements in this work and those obtained using the EPR lithium formate dosimeters were, within the expanded (k = 2) uncertainty, in agreement with the values derived by the TPS. The discrepancy between the results using LiF:Mg,Ti TLDs and the EPR lithium formate dosimeters was, however, statistically significant and in agreement with the difference in relative detector responses found for the two detector systems by Carlsson Tedgren et al. [Med. Phys. 38, 5539-5550 (2011)] and by Adolfsson et al.[Med. Phys. 37, 4946-4959 (2010)]. Conclusions: When calibrated in {sup 60}Co or MV photon beams, correction for the linear energy transfer (LET) dependence of LiF:Mg,Ti detector response will be needed as to measure absorbed doses to water in a {sup 192}Ir beam with highest accuracy. Such corrections will depend on the manufacturing process (MTS-N Poland or Harshaw TLD-100) and details of the annealing and read-out schemes used.

Carlsson Tedgren, Aasa; Elia, Rouba; Hedtjaern, Haakan; Olsson, Sara; Alm Carlsson, Gudrun [Radiation Physics, Department of Medical and Health Sciences (IMH), Faculty of Health Sciences, Linkoeping University, SE 581 85 Linkoeping (Sweden) and Swedish Radiation Safety Authority, SE 171 16 Stockholm (Sweden); Radiation Physics, Department of Medical and Health Sciences (IMH), Faculty of Health Sciences, Linkoeping University, SE 581 85 Linkoeping (Sweden); Radiation Physics, Department of Medical and Health Sciences (IMH), Faculty of Health Sciences, Linkoeping University, SE 581 85 Linkoeping (Sweden) and Department of Radiation Physics UHL, County Council of Oestergoetland, SE 581 85 Linkoeping (Sweden); Radiation Physics, Department of Medical and Health Sciences (IMH), Faculty of Health Sciences, Linkoeping University, SE 581 85 Linkoeping (Sweden)

2012-02-15T23:59:59.000Z

499

Distribution and Ratios of 137Cs and K in Control and K-treated Coconut Trees at Bikini Island where Nuclear Test Fallout Occurred: Effects and Implications  

SciTech Connect (OSTI)

Coconut trees growing on atolls of the Bikini Islands are on the margin of K deficiency because the concentration of exchangeable K in coral soil is very low ranging from only 20 to 80 mg kg{sup -1}. When provided with additional K, coconut trees absorb large quantities of K and this uptake of K significantly alters the patterns of distribution of {sup 137}Cs within the plant. Following a single K fertilization event, mean total K in trunks of K-treated trees is 5.6 times greater than in trunks of control trees. In contrast, {sup 137}Cs concentration in trunks of K-treated and control trees is statistically the same while {sup 137}Cs is significantly lower in edible fruits of K treated trees. Within one year after fertilization (one rainy season), K concentration in soil is back to naturally, low concentrations, however, the tissue concentrations of K in treated trees stays very high internally in the trees for years while {sup 137}Cs concentration in treated trees remains very low in all tree compartments except for the trunk. Potassium fertilization did not change soil Cs availability. Mass balance calculations suggest that the fertilization event increased above ground plant K content by at least a factor of 5 or 2.2 kg. Potassium concentrations and content were higher in all organs of K fertilized trees with the greatest increases seen in organs that receive a portion of tissue K through xylem transport (trunk, fronds and fruit husks) and lowest in organs supplied predominantly with K via the phloem (palm heart, spathe, coco meat and fluid). {sup 137}Cesium concentrations and contents were dramatically lower in all organs of K treated trees with greatest proportional reductions observed in organs supplied predominantly with K via the phloem (palm heart, spathe, coco meat and fluid). All trees remobilize both K and {sup 137}Cs from fronds as they proceed toward senescence. In control trees the reduction in concentration of K and {sup 137}Cs in fronds as they age is logarithmic but K remobilization is linear in K-treated trees where K concentration is high. As a result of K treatment the {sup 137}Cs concentration in K-treated fronds is extremely low and constant with frond age. Fronds of K treated trees contain a greater amount of K than control tree fronds. As they fall to the ground and decay they provide a small continuing pool of K that is about 3% of the natural K in soil under the tree canopy. Results of K and {sup 137}Cs concentration and distribution in control and K-treated coconut trees suggest that the application of K reduces {sup 137}Cs uptake both in the short term immediately following K fertilization and in the long term, after soil K levels have returned to normal but while plant K stores remain high. These results suggests that high internal K concentration and not high soil K is primarily responsible for long-term reduction of {sup 137}Cs in edible fruits, and plays a significant role in limiting further uptake of {sup 137}Cs by roots, and affects allocation of {sup 137}Cs to edible fruits for years. Coconut trees are capable of luxury K accumulation when provided with excess K and in this example the additional K can effectively provide the K requirements of the plant for in excess of 10 years. The reduction of {sup 137}Cs uptake lasts for at least 10 y after K is last applied and greatly reduces the estimated radiation dose to people consuming local tree foods. Effectiveness and duration of K treatment provides important assurances that reduction in {sup 137}Cs is long term and the radiation dose from consuming local plant foods will remain low.

Robison, W L; Brown, P H; Stone, E L; Hamilton, T F; Conrado, C L; Kehl, S R

2008-05-19T23:59:59.000Z

500

Synthesis and Analysis of TiO2-Oligonucleotide Hybrid Nanoparticles  

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

Synthesis and Analysis of TiO2-Oligonucleotide Hybrid Nanoparticles Synthesis and Analysis of TiO2-Oligonucleotide Hybrid Nanoparticles New developments in nanotechnology offer the creation of chemical-biological hybrid nanocomposites, which can be introduced into cells to initiate intracellular processes or biochemical reactions. Researchers from Northwestern University Medical Center (Chicago, IL) and Argonne National Laboratory synthesized TiO2-oligonucleotide nanocomposites made of DNA oligonucleotides attached to 45-Ă… TiO2 nanoparticles and tested them by using the 2-ID-E x-ray beamline at the X-ray Operations and Research sector 2 of the APS. A key benefit of nanocomposites is that they could advance medical biotechnology and open new doors in chemistry and materials sciences. Scan of a 21 x 21-m area with a single nucleus containing 3.6 x 106 nanoparticles.