Henry Matthew, David Adams, Simon Barnes, Richard Ford, Home Correspondent, Derek Ezra, Bill Frost, Andrew Longmore, Tim Judah, Neil Bennett, David Rhys Jones, Ivo Tennant, Rachael Kelly, Philip Howard, Sally Brompton, Hilary Finch, James Bone, Roger Barking, Lynne Truss, C. Carney, Secretary, Debra Isaac, John Best, Matthew D'ancona, Education Correspondent, Tony Patrick, Michael McCarthy, Tom Walker, David Watts, Diplomatic Correspondent, Joe Joseph, Michael Dynes Transport Correspondent, Jack Bleiman, Rachel Kelly, Richard Evans, Racing Correspondent, Taylor of Gosforth, David Lloyd, Carol Anderson, Kenneth Leech, David Watts, Diplomatic Correspondent, and James Bone, John O'Leary, John Young, Michael Hamlyn, Griffith Edwards, Sir Sigmund Sternberg, Ruth Sullivan, Virginia Ironside, John Percival, John Hennessy, Derwent May, Michael Howard, Simon Tait, Sydney Friskin, Kari Knight, David Miller, Philip Webster, Chief Political Correspondent, Benjamin Ivry, Alison Roberts, John O'leary and Matthew D'ancona, David Powell Athletics Correspondent, Marcus Binney, Kerry Gill, Jonathan Prynn, Alan Lee, Cricket Correspondent, Raymond Keene, Chess Correspondent, Matthew D'ancona, Peter Bryan, Heather Kirby, Barry Pickthall, Roger Boyes, Neil Lbennett, Banking Correspondent, Bryan Appleyard, Sarah Jane Saleroom Correspondent, Jamie Dettmer, Mrs Anna Milford, Joanna Pitman, John Goodbody, Nick Nuttall, Technology Correspondent, Christopher Walker, Bowen Cory, John Shircliff, Colin Narbrough, Economics Correspondent, Craig Lord, Associated Press, Henry F. Bear, Michael Hornsby, William Watson, David W. Hide, Alan Lee, Jan Snook, Ben MacIntyre, Barry Field, Peter Victor, Michael Phillips, Simon Miles, Philip Pangalos, Martin Waller, B. L. Hampton, Michael Horsnell, Simon Allen, Alan Coren, Derek Harris, Jonathan Lyons, Richard Morrison, Frances Gibb, Sam Kiley, Rosalind Miles, Vince Wright, John Phillips, Jenny Macarthur, Matthew Bond, Lord Ezra, Mike Rosewell, Rowing Correspondent, John Watson,
... daughters are never far behind New Mommie track Wome driving trains are on the right lines but ...
1992 - Gale Group | TDA
Pierre‐Emmanuel Lippens, M. Womes, Pierre Kubiak, J.‐C. Jumas, J. Olivier‐Fourcade,
The electronic structure of the spinel compound Li4Ti5O12, used as anode material in Li-ion batteries, is studied both theoretically and experimentally. The partial densities of occupied and vacant s, p and d electronic states were calculated for Li, Ti and O, using the linear augmented plane wave formalism (LAPW) in order to obtain information on the chemical bond. X-ray absorption spectra were recorded at the Ti L23, Ti K and O K absorption edges and calculated within the dipolar approximation ...
Tópico(s): Magnetic and transport properties of perovskites and related materials
2004 - Elsevier BV | Solid State Sciences
C. Branci, M. Womes, Pierre‐Emmanuel Lippens, J. Olivier‐Fourcade, J.C. Jumas,
The local environment of tin, titanium, iron, and sulfur in spinel compounds Cu2FeSn3S8 and Cu2FeTi3S8 was studied by X-ray absorption spectroscopy (XAS) at the titanium, iron, sulfur K edges, and the tin LI-edge. As detailed calculations of the electronic structure of these compounds are difficult to carry out due to the large number of atoms contained in the unit cell, the XAS spectra of the spinels are compared to those of relatively simple binary sulfides like SnS2, TiS2, and FeS. Indeed, the ...
Tópico(s): Quantum Dots Synthesis And Properties
2000 - Elsevier BV | Journal of Solid State Chemistry
Pierre Kubiak, Aurélie Garcia, M. Womes, Laurent Aldon, J. Olivier‐Fourcade, Pierre‐Emmanuel Lippens, J.‐C. Jumas,
The spinel Li4Ti5O12, a stable phase of the Li2O–TiO2 system, allows to insert three Li atoms per formula unit at a potential of 1.5 V on the basis of a spinel ↔ NaCl phase transition. This mechanism leads to a reduction of three Ti(IV) atoms out of five, corresponding to a theoretical capacity of 175 mAh/g. The influence of structural defaults on the spinel → NaCl phase transition and its reversibility during charge/discharge cycles have been studied. Solid solutions formed from chemical insertion ...
Tópico(s): Advanced Condensed Matter Physics
2003 - Elsevier BV | Journal of Power Sources
Costana Ionica-Bousquet, M. Womes, Pierre‐Emmanuel Lippens, J. Olivier‐Fourcade, Bernard Ducourant, A. V. Chadwick,
Tópico(s): Semiconductor materials and interfaces
2006 - Springer Science+Business Media | Hyperfine Interactions
Laurent Aldon, Pierre Kubiak, M. Womes, J.C. Jumas, J. Olivier‐Fourcade, José L. Tirado, Juan Corredor, C. Vicente,
Lithium has been inserted into the spinel Li4Ti5O12 by both chemical and electrochemical methods. The cation distribution in the lithiated phases has been analyzed by 6,7Li NMR, Raman spectroscopy, and X-ray diffraction, and the distribution in the chemically inserted compound has been analyzed additionally by neutron diffraction. A refinement of structural parameters has been carried out by applying the Rietveld method to the neutron diffraction pattern. It is shown that the two insertion methods ...
Tópico(s): Advanced Battery Materials and Technologies
2004 - American Chemical Society | Chemistry of Materials
Mohamed Mouyane, M. Womes, J.C. Jumas, J. Olivier‐Fourcade, Pierre‐Emmanuel Lippens,
Calcium stannate (CaSnO3) and malayaite (CaSnSiO5) were synthesized by means of a high temperature solid-state reaction. Their crystal structures and morphologies were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy; their electrochemical properties were analyzed by galvanostatic tests. The amorphization of the initial electrode materials was followed by XRD. The first discharge of the oxides CaSnO3 and CaSnSiO5 shows a plateau at low potential, which is due to the progressive ...
Tópico(s): Semiconductor materials and devices
2011 - Elsevier BV | Journal of Solid State Chemistry
Alicia Weibel, Renaud Bouchet, S. L. P. Savin, A. V. Chadwick, Pierre‐Emmanuel Lippens, M. Womes, Philippe Knauth,
Tin-doped anatase TiO(2) nanopowders and nanoceramics with particle sizes between 12 and 30 nm are investigated by X-ray absorption fine-structure (EXAFS) and Mössbauer spectroscopies. Furthermore, ab initio calculations based on the density functional theory are performed to analyze changes in the electronic structure due to Sn doping. The three approaches consistently show that Sn is dissolved on substitutional bulk sites with a slight increase of the bond lengths of the inner coordination shells. ...
Tópico(s): Quantum Dots Synthesis And Properties
2006 - Wiley | ChemPhysChem
Jean‐Claude Jumas, M. Womes, Pierre‐Emmanuel Lippens, J. Olivier‐Fourcade,
Tópico(s): Electrochemical Analysis and Applications
2008 - Springer Science+Business Media | Hyperfine Interactions
Pierre‐Emmanuel Lippens, Mohammed El Khalifi, M. Womes,
The electronic structures of SnS and SnS 2 have been investigated from first principles calculations to provide a full analysis of the valence and conduction bands. A good agreement with experimental X‐ray photoelectron spectroscopy (XPS), S Kβ X‐ray emission spectroscopy (XES) and X‐ray absorption spectroscopy (XAS) at S K, Sn L 1 and Sn L 3 edges is found and the main features of the spectra are analysed in terms of chemical bonding. In the case of XAS, we show that core‐hole effect is significant ...
Tópico(s): Semiconductor materials and interfaces
2016 - Wiley | physica status solidi (b)
M. Womes, Pierre‐Emmanuel Lippens, B. Léon, C. Vicente, José L. Tirado,
Abstract X-ray absorption spectra of the spinel LiCu0.5Mn1.5O4 were recorded at the Cu K and L3, Mn K and L3, and O K edge. The spectra are aligned on a common energy scale with the aim to establish an experimental picture of the conduction band structure. The fine structures observed a few electron volts around the absorption thresholds are discussed in terms of hybridisation of cation and anion orbitals. Emphasis is put on the identification of spectral features correlated with the presence of ...
Tópico(s): Magnetic and transport properties of perovskites and related materials
2007 - Elsevier BV | Journal of Power Sources
Mohamed Mouyane, Pierre‐Emmanuel Lippens, M. Womes, C. Ducourant, J. Olivier‐Fourcade, J.C. Jumas,
Tópico(s): Advanced Battery Materials and Technologies
2008 - Springer Science+Business Media | Hyperfine Interactions
Mohamed Mouyane, M. Womes, J.C. Jumas, J. Olivier‐Fourcade, Pierre‐Emmanuel Lippens,
The electrochemical reaction mechanism of the Sn–(CaSiO3)0.4 composite electrode with Li was investigated by electrochemical tests and a variety of spectroscopic techniques. The electrochemical behavior of this material showed a highly reversible reaction with Li after the first discharge with a specific capacity of 530 mAh g−1 at C/10 rate. Some essential steps of the mechanism have been inferred from 119Sn Mössbauer spectroscopy and the electrochemical potential curve. The composite material contains ...
Tópico(s): Extraction and Separation Processes
2011 - Elsevier BV | Journal of Power Sources
J.M. Durand, Pierre‐Emmanuel Lippens, J. Olivier‐Fourcade, J.C. Jumas, M. Womes,
The local environment of antimony atoms in glassy samples of the system Sb2S3As2S3Tl2S is studied by X-ray absorption spectroscopy at the Sb LIII-edge. The crystalline compound TlSb3S5, situated within the zone of glass formation of the Sb2S3As2S3Tl2S phase diagram, is used as reference compound in order to derive appropriate phase and amplitude functions for the extended X-ray absorption fine structure (EXAFS) study. The limits of EXAFS in studying the local order around antimony in compounds ...
Tópico(s): X-ray Spectroscopy and Fluorescence Analysis
1996 - Elsevier BV | Journal of Non-Crystalline Solids
Laurent Aldon, Pierre Kubiak, M. Womes, J.C. Jumas, J. Olivier‐Fourcade, José L. Tirado, Juan Corredor, C. Vicente,
Abstract For Abstract see ChemInform Abstract in Full Text.
Tópico(s): Chemical Synthesis and Characterization
2005 - Wiley | ChemInform
Pierre‐Emmanuel Lippens, M. Womes, Pierre Kubiak, Jean‐Claude Jumas, J. Olivier‐Fourcade,
Abstract For Abstract see ChemInform Abstract in Full Text.
Tópico(s): Multiferroics and related materials
2004 - Wiley | ChemInform
Jasmina Lahlah, Pierre Renault, Patrick Cazevieille, Aurélie Buzet, Jean‐Louis Hazemann, M. Womes, Philippe Cambier,
The spreading of vinasse on soils may favor not only anoxia but also mineral alterations and metal mobilization. Our aims were to record the geochemical changes occurring in a ferralsol subjected to vinasse input and anaerobiosis, and to check for soil resilience after a return to aerobic conditions. Soil slurries were therefore incubated under successive 7 d of aerobic, 0 to 28 d of anaerobic, and 28 d of aerobic conditions, vinasse being supplied at one of three levels when anaerobiosis began. ...
Tópico(s): Radioactive element chemistry and processing
2009 - Wiley | Soil Science Society of America Journal
J.M. Durand, Pierre‐Emmanuel Lippens, J. Olivier‐Fourcade, J.C. Jumas, M. Womes,
The local environment of sulfur in amorphous As2S3Sb2S3Tl2S was studied by XAS at the sulfur K-edge. Variations in shape and position of the white line are attributed to changes in the nature of the chemical bond, the metalsulfur bond lengths, and the homogeneity of the metalsulfur bond length distribution. The variations of the white line parameters, position and line width, with sample composition reveal the different influences of the glass-forming arsenic sulfide and antimony sulfide and ...
Tópico(s): Crystal Structures and Properties
1996 - Elsevier BV | Journal of Non-Crystalline Solids
... on trauma associated with large-scale conflicts. Heather Wome, Charles Cobb, Giovanna Vidoli, and Dawnie Wolfe Steadman ...
Tópico(s): Forensic Anthropology and Bioarchaeology Studies
2013 - Association of College and Research Libraries | Choice Reviews Online
... 2007, http://www.csmonitor.com/2007/0503/p01s04-wome.html. 37. Galula, Counterinsurgency Warfare; Nagl, Learning to ...
Tópico(s): Terrorism, Counterterrorism, and Political Violence
2009 - Taylor & Francis | The Washington Quarterly
Mohamed Mouyane, Pierre‐Emmanuel Lippens, M. Womes, Jean‐Claude Jumas, J. Olivier‐Fourcade,
Abstract not Available.
Tópico(s): Semiconductor materials and interfaces
2010 - Institute of Physics | Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM)
J. Olivier‐Fourcade, Pierre‐Emmanuel Lippens, J.C. Jumas, M. Womes, Isabelle Lefèbvre, Matthias Lannoo, J.M. Esteva, R.C. Karnatak,
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Tópico(s): Iron-based superconductors research
1993 - Wiley | ChemInform
J.C. Jumas, Pierre‐Emmanuel Lippens, J. Olivier‐Fourcade, A. Gheorghiu-de la Rocque, ϯC Sénémaud, M. Womes, I. Lefebvre,
L’utilisation de la spectroscopie Mössbauer associée à d’autres techniques expérimentales comme les spectroscopies de photo-électrons (XPS) ou d’absorption des rayons X (XAS) perme d’obtenir une représentation cohérente de la structure électronique globale. Pour développer cette idée, deux exemples concernant la structure électronique locale de Sn ou Sb dans des matériaux chalcogénures sont présentés.
Tópico(s): Chalcogenide Semiconductor Thin Films
1999 - Dunod | Revue de Métallurgie