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{userid:"florence.doucet-populaire", "articletype":"article","pages":"2751-2754","author":"J Aires, F Doucet-Populaire, M J Butel","year":"2007","title":"Tetracycline resistance mediated by tet(W), tet(M), and tet(O) genes of Bifidobacterium isolates from humans.","month":"Apr","journal":"Applied and environmental microbiology","publisher":"","volume":"73","number":"8","note":"","tags":"Bacterial Proteins,Bifidobacteriales Infections,Bifidobacterium,Carrier Proteins,Chromosomes, Bacterial,DNA, Bacterial,Humans,Microbial Sensitivity Tests,Molecular Sequence Data,Nucleic Acid Hybridization,Sequence Analysis, DNA,Tetracycline Resistance","booktitle":"","editor":"","abstract":"MICs of tetracyclines were determined for 86 human Bifidobacterium isolates and three environmental strains. The tet(O) gene was found to be absent in these isolates. tet(W) and tet(M) were found in 26 and 7%, respectively, of the Bifidobacterium isolates, and one isolate contained both genes. Chromosomal DNA hybridization showed that there was one chromosomal copy of tet(W) and\/or tet(M).","address":"","school":"","issn":"0099-2240","doi":"10.1128\/AEM.02459-06","isi":"","pubmed":"17308188","key":"Aires2007","howpublished":"","urllink":"","refid":28,"weight":28}
,

{userid:"laurent.piccolo", "articletype":"article","pages":"110-114","author":"A Piednoir, M A Languille, L Piccolo, A Valcarcel, F J C S Aires, J C Bertolini","year":"2007","title":"Pd(111) versus Pd-Au(111) in carbon monoxide oxidation under elevated pressures","month":"MAR","journal":"CATALYSIS LETTERS","publisher":"","volume":"114","number":"1-2","note":"","tags":"","booktitle":"","editor":"","abstract":"The oxidation of CO on Pd(111) and Pd(70)AU(30)(111) has been studied under pressures upto 100 Torr. Gold is found to decrease the surface activity by inhibiting oxygen dissociation. For a sufficient conversion time depending on the CO coverage and the surface identity, a dramatic boost of activity occurs. This is ascribed to a switch from CO-induced inhibition of O-2, adsorption to a regime determined by CO adsorption. The other kinetic features are explained by oxidation of palladium and adsorption-induced restructuring of the surfaces.","address":"","school":"","issn":"1011-372X","doi":"10.1007\/s10562-007-9047-3","isi":"ISI:000246082900019","pubmed":"","key":"Piednoir2007","howpublished":"","urllink":"","refid":11}
,

{userid:"laurent.piccolo", "articletype":"article","pages":"L639-L644","author":"Y Jugnet, F J C S Aires, C Deranlot, L Piccolo, J C Bertolini","year":"2002","title":"CO chemisorption on Au(110) investigated under elevated pressures by polarized reflection absorption infrared spectroscopy and scanning tunneling microscopy","month":"DEC 10","journal":"SURFACE SCIENCE","publisher":"","volume":"521","number":"1-2","note":"","tags":"","booktitle":"","editor":"","abstract":"CO chemisorption on Au(110) at 300 K is observed under pressures in the range 10(-1)-10(+2) Torr. This is identified by an infrared band at 2110 cm(-1), whose intensity depends on the pressure. Scanning tunneling microscopy reveals deep restructuring of the surface. (C) 2002 Elsevier Science B.V. All rights reserved.","address":"","school":"","issn":"0039-6028","doi":"","isi":"ISI:000179571300001","pubmed":"","key":"Jugnet2002","howpublished":"","urllink":"","refid":18}
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{userid:"laurent.piccolo", "refid":"30","repocollections":"","attachment":"","_thumb":"","articletype":"inproceedings","sectionheading":"","title":"Metallic surfaces under elevated gas pressure studied in situ by scanning tunneling microscopy : O-2, H-2\/Au(111); Co\/Au(110)","year":"2003","author":"F J C Aires, C Deranlot, Y Jugnet, L Piccolo, J C Bertolini","booktitle":"Physics at Surfaces and Interfaces (Puri, India, 4 \u2013 8 March 2002), Proceedings of the International Conference","editor":"WORLD SCIENTIFIC","pages":"13-21","organization":"","address":"","publisher":"","doi":"10.1142\/9789812704221_0002","pubmed":"","pdflink":"","urllink":"http:\/\/www.worldscientific.com\/doi\/10.1142\/9789812704221_0002","abstract":"We have built an experimental set-up including a scanning tunneling microscope in order to study the behaviour of catalytic surfaces in environmental conditions close to that needed in catalysis (pressure of gas, temperature). We have studied gold surfaces under gas pressure since gold was recently found to be highly active in the low temperature catalytic oxidation of carbon monoxide without combustion of hydrogen. We have followed real-time morphological modifications of Au(Ill) surfaces under elevated pressures (I bar) of hydrogen and oxygen. We have also studied the adsorption of CO on Au(110)-(1x2) reconstructed surface and observed in-situ by STM the dramatic change of the morphology of the terraces under the influence of the CO pressure (up to 670 mbar) on the structure of the surface. Complementary XPS and IRRAS measurements were also performed and show CO dissociation the surface.","note":"","tags":"","weight":"30","journal":"PHYSICS AT SURFACES AND INTERFACES","volume":"","number":"","month":"","school":"","issn":"","isi":"ISI:000186471900002","key":"Aires2003","howpublished":""}
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{userid:"laurent.piccolo", "articletype":"article","pages":"995-1000","author":"L Piccolo, D Loffreda, F J C S Aires, C Deranlot, Y Jugnet, P Sautet, J C Bertolini","year":"2004","title":"The adsorption of CO on Au(111) at elevated pressures studied by STM, RAIRS and DFT calculations","month":"SEP 20","journal":"SURFACE SCIENCE","publisher":"","volume":"566","number":"","note":"","tags":"","booktitle":"","editor":"","abstract":"The adsorption of carbon monoxide on the Au(111) single-crystal surface has been investigated in the [10(-3)-10(3) Torr] range at room temperature (RT). Using scanning tunneling microscopy (STM), a CO-induced modification of the surface morphology (step edge roughening) and terrace structure (22 x root3 --> 1 x 1 transition) is evidenced. Reflection absorption infrared spectroscopy (RAIRS) experiments suggest that CO molecules are linearly chemisorbed on top of gold atoms and that adsorption occurs only above similar to1 Torr CO pressure at RT. Density functional theory (DFT) calculations, through consideration of perfect, stepped or kinked surfaces support these results and give additional evidence of strong structure sensitivity for CO adsorption on gold. (C) 2004 Elsevier B.V. All rights reserved.","address":"","school":"","issn":"0039-6028","doi":"10.1016\/j.susc.2004.06.042","isi":"ISI:000224238300060","pubmed":"","key":"Piccolo2004","howpublished":"","urllink":"","refid":17}
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