Search Results - (Author, Cooperation:M. Cebrian)

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  1. 1
    G. Pickard ; W. Pan ; I. Rahwan ; M. Cebrian ; R. Crane ; A. Madan ; A. Pentland
    American Association for the Advancement of Science (AAAS)
    Published 2011
    Staff View
    Publication Date:
    2011-10-29
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Altruism ; *Communication ; *Cooperative Behavior ; Humans ; *Internet ; *Motivation ; *Social Facilitation ; Time Factors
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    B. Sicardy ; J. L. Ortiz ; M. Assafin ; E. Jehin ; A. Maury ; E. Lellouch ; R. G. Hutton ; F. Braga-Ribas ; F. Colas ; D. Hestroffer ; J. Lecacheux ; F. Roques ; P. Santos-Sanz ; T. Widemann ; N. Morales ; R. Duffard ; A. Thirouin ; A. J. Castro-Tirado ; M. Jelinek ; P. Kubanek ; A. Sota ; R. Sanchez-Ramirez ; A. H. Andrei ; J. I. Camargo ; D. N. da Silva Neto ; A. R. Gomes, Jr. ; R. V. Martins ; M. Gillon ; J. Manfroid ; G. P. Tozzi ; C. Harlingten ; S. Saravia ; R. Behrend ; S. Mottola ; E. G. Melendo ; V. Peris ; J. Fabregat ; J. M. Madiedo ; L. Cuesta ; M. T. Eibe ; A. Ullan ; F. Organero ; S. Pastor ; J. A. de Los Reyes ; S. Pedraz ; A. Castro ; I. de la Cueva ; G. Muler ; I. A. Steele ; M. Cebrian ; P. Montanes-Rodriguez ; A. Oscoz ; D. Weaver ; C. Jacques ; W. J. Corradi ; F. P. Santos ; W. Reis ; A. Milone ; M. Emilio ; L. Gutierrez ; R. Vazquez ; H. Hernandez-Toledo
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-10-28
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    ISSN:
    0027-5107
    Keywords:
    Arsenic ; Human monitoring ; Lymphocyte cycle kinetics
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0027-5107(91)90204-2

    Articles: DFG German National Licenses
  4. 4
    Staff View
    ISSN:
    0378-4347
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/S0378-4347(00)82360-9

    Articles: DFG German National Licenses
  5. 5
    Staff View
    ISSN:
    1432-0738
    Keywords:
    Key words Arsenic  ;  Methylation  ;  Chronic exposure  ;   Urine  ;  Skin diseases
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Abstract Relationships between alterations in the profile of urinary arsenic (As) species and the presence of cutaneous signs of arsenicism were studied in Region Lagunera, Mexico. The use of urinary concentrations of putative substrates and products of the As metabolism pathway, as indicators of metabolic efficiency is also discussed. Arsenic was determined by hydride generation atomic absorption spectrophotometry and separation of As species was performed by ion exchange chromatography. The exposed group had an average of 0.408 mg As/l of total As (TAs) in their drinking water, whereas `control' individuals had 0.031 mg/l. Urinary concentrations of arsenic species and TAs were 20 to 95 times higher in the exposed group. Significant increases in the relative proportions of inorganic arsenic (Asi) and monomethylarsonic acid (MMA), accompanied by decreases of dimethylarsinic acid (DMA) were also found in exposed individuals. Therefore, significant decreases in the value of the MMA/Asi, DMA/MMA and DMA/Asi ratios were observed, suggesting a decreased As methylating ability. Exposed individuals bearing cutaneous signs had a significantly longer time of exposure, higher urinary concentrations and proportions of MMA and MMA/Asi values, and significantly lower DMA/MMA than exposed individuals without cutaneous signs. Further research is needed to identify better parameters for assessing the efficiency of As metabolism in chronically exposed populations and to confirm the potential relationship between metabolic alterations and overt signs of As toxicity.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s002040050378

    Articles: DFG German National Licenses