Search Results - (Author, Cooperation:C. Servais)

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  1. 1
    Staff View
    Publication Date:
    2014-11-07
    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
  2. 2
    Staff View
    Publication Date:
    2018-11-16
    Publisher:
    American Society of Hematology (ASH)
    Print ISSN:
    0006-4971
    Electronic ISSN:
    1528-0020
    Topics:
    Biology
    Medicine
    Keywords:
    Thrombocytopenia, Free Research Articles, Platelets and Thrombopoiesis, CME article, Clinical Trials and Observations
    Published by:
    http://www.hematology.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    SERVAIS, C. ; RAVJI, S. ; SANSONNENS, C. ; BAUWENS, I.

    Oxford, UK : Blackwell Publishing Ltd
    Published 2002
    Staff View
    ISSN:
    1745-4603
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Process Engineering, Biotechnology, Nutrition Technology
    Notes:
    Several relationships between the torque and the stress exist for the vane geometry, but only a few equations have been proposed for the relationship between angular displacement and strain. In this study, an expression based on the infinite gap approximation for concentric cylinders is used and well-defined reference data are compared to oscillating vane data to validate the assumptions used. Gelatin gels are used for their property to stick to the wall and carrageenan gels are used to show that wall slip does not occur with oscillating vanes in serrated cup geometries. Shaving foams are used as a model low density, time and shear stable foam, which resists irreversible damage when loaded between serrated parallel plates. Results show that the assumptions used for the determination of stress and strain with the vane provide material viscoelastic properties that are not significantly different from reference values as obtained with concentric cylinders and parallel plates.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1745-4603.2002.tb01363.x

    Articles: DFG German National Licenses
  4. 4
    SERVAIS, C. ; RANC, H. ; ROBERTS, I.D.

    Oxford, UK : Blackwell Publishing Ltd
    Published 2003
    Staff View
    ISSN:
    1745-4603
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Process Engineering, Biotechnology, Nutrition Technology
    Notes:
    A critical appraisal of the Casson model for measuring chocolate versus a new proposed method is performed. The new method is validated with both research grade rheometers and factory grade viscometers. This includes elements of measurement uncertainty. In this way, a new reference method is validated for the viscosity of chocolate and related cocoa products using factory grade viscometers. It involves recording: (1) the value of the stress at a shear rate of 5 s-1 to represent the yield stress of chocolate, (2) the value of the viscosity at a shear rate of 40 s-1 to represent the high shear viscosity, and (3) the difference between the viscosity measured at a shear rate of 40 s-1 during the ramp up and down in shear rate to represent thixotropy. Results relate to the solid to liquid glass transition of dispersions under applied stress, and it is shown that they reflect existing theories of stress induced formation and rupture of fractal aggregates, for particle crowded colloidal suspensions with low interaction energy.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1745-4603.2003.tb01077.x

    Articles: DFG German National Licenses
  5. 5
    Locht, R. ; Servais, C. ; Ligot, M. ; Derwa, F. ; Momigny, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0301-0104
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0301-0104(88)87053-8

    Articles: DFG German National Licenses
  6. 6
    Servais, C. ; Locht, R. ; Momigny, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0168-1176
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0168-1176(86)85004-2

    Articles: DFG German National Licenses
  7. 7
    Locht, R. ; Servais, C. ; Ligot, M. ; Davister, M. ; Momigny, J.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0301-0104
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0301-0104(88)87095-2

    Articles: DFG German National Licenses
  8. 8
    Staff View
    ISSN:
    1573-0662
    Keywords:
    atmospheric composition ; troposphere ; trends ; infrared
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Notes:
    Abstract Since 1984, about 15000 high quality infrared solar spectra have beenrecorded with state-of-the-art grating and Fourier transform spectrometersat the International Scientific Station of the Jungfraujoch, Switzerland.Nonlinear least squares spectral curve fitting of selected microwindowscontaining isolated and well characterized lines of 20 telluric gases haveallowed to retrieve their total vertical column abundances above thestation, leading to observational data bases essential to derive long- andshort-term changes experienced by these species during the last 12 years. Inthis paper, we focus on atmospheric gases of particular interest within thecontext of the EUROTRAC/TOR (Tropospheric Ozone Research) project; secularevolution as well as seasonal cycles of the minor constituentsCH4, CO and of the trace gasesC2H6, OCS, C2H2, HCNand H2CO are reported and discussed. The long-livedN2O is included as a tracer of the dynamic activity of theatmosphere.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1005854926740

    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    1573-0662
    Keywords:
    carbonyl fluoride ; IR observations ; atmospheric composition
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Geosciences
    Notes:
    Abstract Total vertical column abundances of carbonyl fluoride (COF2) have been derived from observations made at the International Scientific Station of the Jungfraujoch (ISSJ; altitude 3.58 km, latitude 46.5°N, longitude 8.0°E), Switzerland. A systematic analysis of two microwindows containing lines of the ν1 band was performed, based on a large set of high resolution infrared solar absorption spectra recorded with Fourier transform spectrometers, from 1985 to 1995. Examination of the whole available database indicates a significant increase of the burden of COF2 during the 1988–1995 period. The average exponential rate and the average linear rate referenced to 1992, calculated from daily mean measurements, are both equal to (4.0 ± 0.5)% yr-1 (one σ error). The results are also evaluated and discussed within the context of seasonal variability and correlation between carbonyl fluoride and hydrogen fluoride (HF) columns above the ISSJ.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1005847829686

    Articles: DFG German National Licenses