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

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  1. 1
    Li, Z. ; Borrmann, A. ; C. Martens, C.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0009-2614
    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/0009-2614(93)85651-4

    Articles: DFG German National Licenses
  2. 2
    Staff View
    Publication Date:
    2015-03-06
    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
    E. C. Martens
    Nature Publishing Group (NPG)
    Published 2016
    Staff View
    Publication Date:
    2016-01-15
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; Diet/*adverse effects ; *Extinction, Biological ; Female ; *Gastrointestinal Microbiome ; Humans ; Male
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Staff View
    Publication Date:
    2011-11-25
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Adaptation, Physiological/*genetics/physiology ; Animals ; Ecdysterone/analogs & derivatives/genetics ; Evolution, Molecular ; Fibroins/genetics ; Gene Expression Regulation ; Gene Transfer, Horizontal/genetics ; Genes, Homeobox/genetics ; Genome/*genetics ; Genomics ; Herbivory/*genetics/physiology ; Molecular Sequence Data ; Molting/genetics ; Multigene Family/genetics ; Nanostructures/chemistry ; Plants/parasitology ; Silk/biosynthesis/chemistry ; Tetranychidae/*genetics/*physiology ; Transcriptome/genetics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    D. Nandy ; A. Munoz-Jaramillo ; P. C. Martens
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-03-04
    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
  6. 6
    Staff View
    Publication Date:
    2014-01-28
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Amino Acid Sequence ; Bacteroides/enzymology/*genetics/growth & development/*metabolism ; Carbohydrate Metabolism/genetics ; Carbohydrate Sequence ; Cell Wall/chemistry ; Crystallography, X-Ray ; Diet ; Dietary Fiber ; Evolution, Molecular ; Gastrointestinal Tract/*microbiology ; Genetic Loci/*genetics ; Glucans/chemistry/*metabolism ; Glycoside Hydrolases/chemistry/genetics/metabolism ; Humans ; Metagenome ; Models, Molecular ; Molecular Sequence Data ; Phylogeny ; Protein Structure, Tertiary ; Symbiosis ; Xylans/chemistry/*metabolism
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    Staff View
    Publication Date:
    2015-01-09
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; Bacteroidetes/cytology/enzymology/genetics/*metabolism ; Biological Evolution ; Carbohydrate Conformation ; Diet ; Enzymes/genetics/metabolism ; Female ; Gastrointestinal Tract/*microbiology ; Genetic Loci/genetics ; Germ-Free Life ; Glycoproteins/chemistry/metabolism ; Humans ; Male ; Mannans/chemistry/*metabolism ; Mannose/metabolism ; Mice ; *Models, Biological ; Models, Molecular ; Oligosaccharides/chemistry/metabolism ; Periplasm/enzymology ; Yeasts/*chemistry
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  8. 8
    C. Martens, A. Bill, and G. Seibold
    American Physical Society (APS)
    Published 2018
    Staff View
    Publication Date:
    2018-11-27
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    1098-0121
    Electronic ISSN:
    1095-3795
    Topics:
    Physics
    Keywords:
    Superfluidity and superconductivity
    Published by:
    http://www.aps.org/

    Latest Papers from Table of Contents or Articles in Press
  9. 9
    N. Kamada ; Y. G. Kim ; H. P. Sham ; B. A. Vallance ; J. L. Puente ; E. C. Martens ; G. Nunez
    American Association for the Advancement of Science (AAAS)
    Published 2012
    Staff View
    Publication Date:
    2012-05-15
    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:
    Animals ; Bacterial Load ; Bacterial Proteins/genetics/metabolism ; Bacteroides/*growth & development ; Citrobacter rodentium/genetics/growth & development/immunology/*pathogenicity ; Enterobacteriaceae Infections/immunology/*microbiology ; Escherichia coli/*growth & development ; Feces/microbiology ; Gene Expression Regulation, Bacterial ; Germ-Free Life ; Intestinal Mucosa/*microbiology ; Intestines/*microbiology ; *Metagenome ; Mice ; Mice, Inbred C57BL ; *Microbial Interactions ; Specific Pathogen-Free Organisms ; Virulence Factors/genetics/metabolism
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  10. 10
    Staff View
    Publication Date:
    2018-06-05
    Publisher:
    The American Association of Immunologists (AAI)
    Print ISSN:
    0022-1767
    Electronic ISSN:
    1550-6606
    Topics:
    Medicine
    Published by:
    http://www.aai.org/

    Latest Papers from Table of Contents or Articles in Press
  11. 11
    Zadoyan, R. ; Li, Z. ; Martens, C. C. ; Apkarian, V. A.

    College Park, Md. : American Institute of Physics (AIP)
    Published 1994
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    The caging of I2 in solid Kr is followed in real-time following its dissociative excitation on the A(3Π1u) surface. The experiments involve pump–probe measurements with a time resolution of ≥150 fs. The experimental signals are reproduced using classical molecular dynamics simulations, and the classical Franck approximation. The comparison between experiment and simulation allows an unambiguous interpretation of features in the observed signal as being due to the initial impulsive stretch of the I–I bond, collision of the atoms with the cage wall, recoil and recombination, and the subsequent coherent oscillations of the nascent I2 molecule. These detailed observations are possible due to retention of coherence along the I–I coordinate throughout the caging process. The extent of coherence is dictated mainly by the initial impact parameters of the molecule-cage collision, which in turn is controlled by the thermal and zero-point amplitudes of lattice vibrations. The caging is well-described as a sudden process, involving a binary collision between I and Kr atoms with nearly complete energy loss of the I atom upon completion of the first collision. Vibrational relaxation of the bound molecule proceeds on the time scale of 12 ps. The nontrivial relation between this relaxation time and decay rates that may be extracted from experimental transients is discussed. Although the interplay between the nested A and A' potentials is not detectable, it is clear that in the studied range of initial excess energies, 1000–1700 cm−1, the recombination remains effectively adiabatic, and does not involve the ground state.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.468359

    Articles: DFG German National Licenses
  12. 12
    Martens, C. C.

    College Park, Md. : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    In this Comment, we correct a misunderstanding in the title paper concerning the accuracy of the fast Fourier transform method of local frequency analysis of Martens, Davis, and Ezra. We also discuss the application of the Martens–Davis–Ezra method to a two degree of freedom model of OSC. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.477298

    Articles: DFG German National Licenses
  13. 13
    Garcia-Ayllon, A. ; Martens, C. C. ; Santamaria, J. ; Ezra, G. S.

    College Park, Md. : American Institute of Physics (AIP)
    Published 1987
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    Semiclassical methods are applied to determine transition frequencies and vibrational energies for the two-mode HC2 stretch–bend Hamiltonian recently studied by Swamy and Hase [J. Chem. Phys. 84, 361 (1986)]. The mean action spectral approximation for calculating transition frequencies is found to give results in excellent agreement with quantum variational values. The FFT EBK method is used to calculate vibrational eigenvalues for both nonresonant and 3:1 resonant states. Both approaches give results more accurate than those reported by Swamy and Hase using the DeLeon–Heller–Miller method. The presence of stretch–bend potential coupling is found to reduce the extent of classical chaos.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.453445

    Articles: DFG German National Licenses
  14. 14
    DECKMYN, G. ; MARTENS, C. ; IMPENS, I.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1994
    Staff View
    ISSN:
    1365-3040
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Biology
    Notes:
    To evaluate the effect of different naturally occurring irradiation conditions on the sensitivity of bean (Phaseolus vulgaris cv. Label) to increased UV-B levels, plants were grown under six different light treatments. In the control series (at ambient levels of UV-B), UV-B and visible light were decreased in parallel, resulting in three different total irradiation treatments with the same UV-B/PAR ratio. A second series with a 15% increase in UV-B irradiation at each PAR level was used to investigate the effect of UV-B under the varying total irradiance levels. The different total irradiance levels resulted in large differences in total dry weight, specific leaf weight, photosynthesis-light response and pigment concentrations. Nevertheless, the 15% increase in UV-B resulted in equal reductions in total dry weight (from 24.5 to 34.3%) and effective photosynthesis for all light levels. The accumulation of protective pigments in the primary bean leaves was strongly correlated to the total irradiance level (200% increase from the lowest to the highest light level), but was not influenced by increasing UV-B levels. As the UV-B/PAR ratio outside increases with decreasing total irradiance (when induced by cloud cover) this implies that low radiation levels are potentially dangerous to some plants, even though the UV-B levels may seem negligible.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3040.1994.tb00295.x

    Articles: DFG German National Licenses
  15. 15
    Liesse, M. ; Van Imschoot, K. ; Martens, C. ; Lauwers, P.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0022-3999
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Medicine
    Psychology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0022-3999(74)90083-X

    Articles: DFG German National Licenses
  16. 16
    Staff View
    ISSN:
    1572-8854
    Keywords:
    Pyridine complex of Cu(II)nitrate
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Geosciences
    Physics
    Notes:
    Abstract The crystal and molecular structure of a pyridine complex of anhydrous copper(II)nitrate is described. The structure has been solved by vector search methods and refined by least-squares methods to R1=0.049 [I〉2σ(I)]. The complex lies on a twofold axis parallel toa, and two solvent pyridine molecules lie on twofold axes parallel toc. The copper atom is coordinated by four pyridyl groups and two monodentate NO3 groups. Crystal data: C30H30N8O6Cu, orthorhombic, space group Pnna(52),a=14.446(7),b=12.154(5),c=16.881(4) Å,V=2964(2) Å3,Z=4.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01665282

    Articles: DFG German National Licenses
  17. 17
    Paull, C. K. ; Martens, C. S. ; Chanton, J. P. ; Neumann, A. C. ; Coston, J. ; Jull, A. J. T. ; Toolin, L. J.

    [s.l.] : Nature Publishing Group
    Published 1989
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] The energy source for deep-sea chemosynthetic communities is reduced compounds, such as HS~, CH4, NHj or petroleum9'10, which may be carried in pore fluids from anoxic subsurface formations onto the oxygenated sea floor. Dissolved SH2S (H2S, HS", S"2), NH+ and CH4 are all present in brines that ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/342166a0

    Articles: DFG German National Licenses