Search Results - (Author, Cooperation:R. Hartmann)

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  1. 1
    M. M. Seibert ; T. Ekeberg ; F. R. Maia ; M. Svenda ; J. Andreasson ; O. Jonsson ; D. Odic ; B. Iwan ; A. Rocker ; D. Westphal ; M. Hantke ; D. P. DePonte ; A. Barty ; J. Schulz ; L. Gumprecht ; N. Coppola ; A. Aquila ; M. Liang ; T. A. White ; A. Martin ; C. Caleman ; S. Stern ; C. Abergel ; V. Seltzer ; J. M. Claverie ; C. Bostedt ; J. D. Bozek ; S. Boutet ; A. A. Miahnahri ; M. Messerschmidt ; J. Krzywinski ; G. Williams ; K. O. Hodgson ; M. J. Bogan ; C. Y. Hampton ; R. G. Sierra ; D. Starodub ; I. Andersson ; S. Bajt ; M. Barthelmess ; J. C. Spence ; P. Fromme ; U. Weierstall ; R. Kirian ; M. Hunter ; R. B. Doak ; S. Marchesini ; S. P. Hau-Riege ; M. Frank ; R. L. Shoeman ; L. Lomb ; S. W. Epp ; R. Hartmann ; D. Rolles ; A. Rudenko ; C. Schmidt ; L. Foucar ; N. Kimmel ; P. Holl ; B. Rudek ; B. Erk ; A. Homke ; C. Reich ; D. Pietschner ; G. Weidenspointner ; L. Struder ; G. Hauser ; H. Gorke ; J. Ullrich ; I. Schlichting ; S. Herrmann ; G. Schaller ; F. Schopper ; H. Soltau ; K. U. Kuhnel ; R. Andritschke ; C. D. Schroter ; F. Krasniqi ; M. Bott ; S. Schorb ; D. Rupp ; M. Adolph ; T. Gorkhover ; H. Hirsemann ; G. Potdevin ; H. Graafsma ; B. Nilsson ; H. N. Chapman ; J. Hajdu
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-02-05
    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:
    Electrons ; Hot Temperature ; Lasers ; Mimiviridae/*chemistry ; Photons ; Time Factors ; X-Ray Diffraction/*instrumentation/*methods ; X-Rays
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2018-03-09
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    0031-9007
    Electronic ISSN:
    1079-7114
    Topics:
    Physics
    Keywords:
    Condensed Matter: Structure, etc.
    Published by:
    http://www.aps.org/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Staff View
    Publication Date:
    2018-04-28
    Publisher:
    Nature Publishing Group (NPG)
    Electronic ISSN:
    2041-1723
    Topics:
    Biology
    Chemistry and Pharmacology
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Staff View
    Publication Date:
    2014-08-26
    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
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    H. N. Chapman ; P. Fromme ; A. Barty ; T. A. White ; R. A. Kirian ; A. Aquila ; M. S. Hunter ; J. Schulz ; D. P. DePonte ; U. Weierstall ; R. B. Doak ; F. R. Maia ; A. V. Martin ; I. Schlichting ; L. Lomb ; N. Coppola ; R. L. Shoeman ; S. W. Epp ; R. Hartmann ; D. Rolles ; A. Rudenko ; L. Foucar ; N. Kimmel ; G. Weidenspointner ; P. Holl ; M. Liang ; M. Barthelmess ; C. Caleman ; S. Boutet ; M. J. Bogan ; J. Krzywinski ; C. Bostedt ; S. Bajt ; L. Gumprecht ; B. Rudek ; B. Erk ; C. Schmidt ; A. Homke ; C. Reich ; D. Pietschner ; L. Struder ; G. Hauser ; H. Gorke ; J. Ullrich ; S. Herrmann ; G. Schaller ; F. Schopper ; H. Soltau ; K. U. Kuhnel ; M. Messerschmidt ; J. D. Bozek ; S. P. Hau-Riege ; M. Frank ; C. Y. Hampton ; R. G. Sierra ; D. Starodub ; G. J. Williams ; J. Hajdu ; N. Timneanu ; M. M. Seibert ; J. Andreasson ; A. Rocker ; O. Jonsson ; M. Svenda ; S. Stern ; K. Nass ; R. Andritschke ; C. D. Schroter ; F. Krasniqi ; M. Bott ; K. E. Schmidt ; X. Wang ; I. Grotjohann ; J. M. Holton ; T. R. Barends ; R. Neutze ; S. Marchesini ; R. Fromme ; S. Schorb ; D. Rupp ; M. Adolph ; T. Gorkhover ; I. Andersson ; H. Hirsemann ; G. Potdevin ; H. Graafsma ; B. Nilsson ; J. C. Spence
    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-02-05
    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:
    Crystallography, X-Ray/instrumentation/*methods ; Lasers ; Models, Molecular ; Nanoparticles/*chemistry ; Nanotechnology/instrumentation/*methods ; Photosystem I Protein Complex/*chemistry ; Protein Conformation ; Time Factors ; X-Rays
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  6. 6
    N. D. Loh ; C. Y. Hampton ; A. V. Martin ; D. Starodub ; R. G. Sierra ; A. Barty ; A. Aquila ; J. Schulz ; L. Lomb ; J. Steinbrener ; R. L. Shoeman ; S. Kassemeyer ; C. Bostedt ; J. Bozek ; S. W. Epp ; B. Erk ; R. Hartmann ; D. Rolles ; A. Rudenko ; B. Rudek ; L. Foucar ; N. Kimmel ; G. Weidenspointner ; G. Hauser ; P. Holl ; E. Pedersoli ; M. Liang ; M. S. Hunter ; L. Gumprecht ; N. Coppola ; C. Wunderer ; H. Graafsma ; F. R. Maia ; T. Ekeberg ; M. Hantke ; H. Fleckenstein ; H. Hirsemann ; K. Nass ; T. A. White ; H. J. Tobias ; G. R. Farquar ; W. H. Benner ; S. P. Hau-Riege ; C. Reich ; A. Hartmann ; H. Soltau ; S. Marchesini ; S. Bajt ; M. Barthelmess ; P. Bucksbaum ; K. O. Hodgson ; L. Struder ; J. Ullrich ; M. Frank ; I. Schlichting ; H. N. Chapman ; M. J. Bogan
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-06-29
    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:
    Aerosols/*analysis/*chemistry ; Amino Acids/chemistry ; Electrons ; *Fractals ; Lasers ; *Mass Spectrometry ; *Motion ; Nanoparticles ; Particle Size ; Proteins/chemistry ; Solvents/chemistry ; Soot/*analysis/*chemistry ; Vibration ; X-Ray Diffraction
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  7. 7
    Staff View
    Type of Medium:
    article
    Publication Date:
    2003
    Keywords:
    Selbstständigkeit ; Selbstverantwortung ; Wohnen ; Betreutes Wohnen ; Erlebnisbericht ; Lernbehinderter
    In:
    Lernen fördern, Bd. 23 (2003) H. 1, S. 6-7, 0720-8316
    Language:
    German

    FIS Bildung Literaturdatenbank
  8. 8
    Staff View
    Type of Medium:
    article
    Publication Date:
    1987
    Keywords:
    Empirische Forschung ; Didaktische Grundlageninformation ; Lexikografie ; Bedarfsanalyse ; Wörterbuch ; Zweisprachiges Wörterbuch
    In:
    Lebende Sprachen, Bd. 32 (1987) H. 4, S. 154-156, 0023-9909
    Language:
    German
    Note:
    Literaturangaben

    FIS Bildung Literaturdatenbank
  9. 9
    Staff View
    Publication Date:
    2018-03-07
    Publisher:
    Nature Publishing Group (NPG)
    Electronic ISSN:
    2041-1723
    Topics:
    Biology
    Chemistry and Pharmacology
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  10. 10
    Staff View
    ISSN:
    1089-7623
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Electrical Engineering, Measurement and Control Technology
    Notes:
    Monolythic arrays of 12 pn-charge coupled devices 3×1 cm2 each, have been developed and produced for the focal plane instrumentation of the high throughput European Photon Imaging Camera on XMM and the German ABRIXAS x-ray satellite mission. The design parameters have been optimized to match the properties of the x-ray imaging optics as well as the x-ray intensity, energy bandwidth, and characteristic time constants of objects to be observed. The pixel size is 150×150 μm2; read-out is performed in parallel with 64 channels in each subunit, resulting in a total of 768 channels; low noise, spectroscopic performance is realized by on-chip integrated JFET electronics; high ohmic, ultrapure bulk material allows full depletion and enhances the efficiency for higher energy x-ray detection. The fabrication process, the layout topology, and the operating conditions guarantee ten years operation in space without performance degradation. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.1148341

    Articles: DFG German National Licenses
  11. 11
    De Neve, S. ; Van de Steene, J. ; Hartmann, R. ; Hofman, G.

    Oxford, UK : Blackwell Science Ltd
    Published 2000
    Staff View
    ISSN:
    1365-2389
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Geosciences
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    The mineralization of nitrogen from soil organic matter is important when one tries to optimize nitrogen fertilization and assess risks of N losses to the environment, but its measurement is laborious and expensive. We have explored the possibilities for monitoring N mineralization directly using time domain reflectometry (TDR). Net N and S mineralization were monitored over a 101-day period in two layers (0–30 and 30–60 cm) of a loamy sand soil during aerobic incubation in a laboratory experiment. At the same time electrical conductivity of the bulk soil, σa, was measured by TDR. A series of calibration measurements with different amounts of KNO3 at different soil moisture contents was made with the topsoil to calculate the electrical conductivity, σw, of the soil solution from σa and θ. The actual σw was determined from the conductivity of 1:2 soil:water extracts (σ1:2) with a mass balance approach using measured NO3– concentrations, after correction for ions present prior to the addition of KNO3. The average N mineralization rate in the topsoil was small (0.12 mg N kg−1 day−1), and, as expected, very small in the subsoil (0.023 mg N kg−1 day−1). In the top layer NO3– concentrations calculated from σa determined by TDR slightly underestimated measured concentrations in the first 4 weeks, and in the second half of the incubation there was a significant overestimation of measured NO3–. Using the sum of both measured NO3– and SO42– reduced the overestimation. In the subsoil calculated NO3– concentrations strongly and consistently overestimated measured concentrations, although both followed the same trend. As S mineralization in the subsoil was very small, and initial SO42– concentrations were largely taken into account in the calibration relations, SO42– concentrations could not explain the overestimation. The very small NO3– and SO42– concentrations in the B layer, at the lower limit of the concentrations used in the calibrations, are a possible explanation for the discrepancies. A separate calibration for the subsoil could also be required to improve estimates of NO3– concentrations.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1365-2389.2000.00306.x

    Articles: DFG German National Licenses
  12. 12
    Hartmann, R. ; Gennser, U. ; Sigg, H. ; Grützmacher, D.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The effect of strain compensation in Si/SiGeC multiple quantum wells (MQWs) is investigated. Photoluminescence measurements on strain-reduced Si/SiGeC layers indicate a type-I band alignment. Values for the conduction-band and valence-band offsets of nearly strain-free Si/SiGeC MQWs are presented. Variation of the strain in the pseudomorphic layers reveals a lowering of the gap energy for exactly strain-compensated SiGeC compared to compressive SiGeC. A model is developed which explains this energy behavior in terms of band offsets and confinement shifts. The band alignments of strain-reduced Si/SiGeC and Si/SiC are compared. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.122144

    Articles: DFG German National Licenses
  13. 13
    Hartmann, R. ; Justesen, J. ; Sarkar, S. ; Sen, G. ; Yee, V.

    Oxford, UK; Malden, USA : Blackwell Science Ltd/Inc.
    Published 2004
    Staff View
    ISSN:
    1365-3083
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Notes:
    2′-5′-oligoadenylate synthetases are interferon-induced, double-stranded RNA-activated antiviral enzymes which are the only proteins known to catalyse 2′-specific nucleotidyl transfer. This first crystal structure of a 2′-5′-oligoadenylate synthetase reveals a structural conservation with the 3′-specific poly(A) polymerase that, coupled with structure-guided mutagenesis, supports a conserved catalytic mechanism for the 2′- and 3′-specific nucleotidyl transferases. Comparison with structures of other superfamily members indicates that the donor substrates are bound by conserved active site features while the acceptor substrates are oriented by nonconserved regions. The 2′-5′-oligoadenylate synthetases are activated by viral double-stranded RNA in infected cells and initiate a cellular response by synthesizing 2′-5′-oligoadenylates, that in turn activate RNase L. This crystal structure suggests that activation involves a domain–domain shift and identifies a putative dsRNA activation site that is probed by mutagenesis. We demonstrated that this site is required both for the binding of dsRNA and for the subsequent activation of OAS. This RNA-binding site is different from known RNA-binding site; rather than forming a defined three-dimensional domain, it is located at the interface of the two major domains in OAS. This novel architecture ensures that the dsRNA helix can make simultaneously contact with both domains of OAS and ensure the subsequent structural rearrangement leading to the activation of OAS. Our work provides structural insight into cellular recognition of double-stranded RNA of viral origin and identifies a novel RNA-binding motif.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.0300-9475.2004.01423s.x

    Articles: DFG German National Licenses
  14. 14
    De Neve, S. ; Hartmann, R. ; Hofman, G.

    Oxford, UK : Blackwell Science Ltd
    Published 2003
    Staff View
    ISSN:
    1365-2389
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Geosciences
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    We studied the changes in composition of the soil solution following mineralization of N at different temperatures, with a view to using TDR to calculate temperature coefficients for the mineralization of N. Mineralization from soil organic nitrogen was measured during aerobic incubation under controlled conditions at six temperatures ranging from 5.5 to 30°C, and at constant water content in a loamy sand soil. We also monitored during the incubation the concentrations of SO42–, Cl–, HCO3–, Ca2+, K+, Mg2+ and Na+, and the pH and the electrical conductivity in 1:2 soil:water extracts. Zero-order N mineralization rates ranged between 0.164 at 5.5°C and 0.865 mg N kg−1 soil day−1 at 30°C. There was a significant decrease in soil pH during incubation, of up to 0.6 pH units at the end of the incubation at 30°C. The electrical conductivity of the soil extracts increased significantly at all temperatures (the increase between the start and the end of the incubation was 4-fold at 30°C) and was strongly correlated with N mineralization. The ratio of bivalent to monovalent cations increased markedly during mineralization (from 2.2 to 5.9 at 30°C), and this increase influenced the evolution of the electrical conductivity of the soil solution through the differences in molar-limiting ion conductivity between mainly Ca2+ and K+. Zero-order mineralization rate constants, k, for NO3– concentrations calculated from TDR varied between 0.070 (at 5.5°C) and 0.734 mg N kg−1 soil day−1 (at 30°C), which were slightly smaller, but in the same range, as the measured rates. Underestimation of the measured N mineralization rates was due, at least in part, to differences in cation composition of the soil solution between calibration and mineralization experiments. A temperature-dependence model for N mineralization from soil organic matter was fitted to both the measured and the TDR-calculated mineralization rates, k and kTDR, respectively. There were no significant differences between the model parameters from the two. Our results are promising for further use of TDR to monitor soil organic N mineralization. However, the influence of changing cation ratios will also have to be taken into account when trying to predict N mineralization from measured electrical conductivities.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1046/j.1365-2389.2003.00521.x

    Articles: DFG German National Licenses
  15. 15
    Robison, G. ; Arnold, A. ; Cole, B. ; Hartmann, R.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1971
    Staff View
    ISSN:
    1749-6632
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Natural Sciences in General
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1749-6632.1971.tb53200.x

    Articles: DFG German National Licenses
  16. 16
    HARTMANN, R. R. K.

    Oxford : Periodicals Archive Online (PAO)
    Published 1981
    Staff View
    ISSN:
    0142-6001
    Topics:
    Linguistics and Literary Studies
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:j432-1981-002-00-000013

    Articles: DFG German National Licenses
  17. 17
    Hartmann, R.

    Berlin : Periodicals Archive Online (PAO)
    Published 1913
    Staff View
    ISSN:
    0030-5383
    Topics:
    Linguistics and Literary Studies
    Ethnic Sciences
    History
    Notes:
    Abhandlungen und Notizen
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4148-1913-016-00-000017

    Articles: DFG German National Licenses
  18. 18
    Hartmann, R.

    Berlin : Periodicals Archive Online (PAO)
    Published 1914
    Staff View
    ISSN:
    0030-5383
    Topics:
    Linguistics and Literary Studies
    Ethnic Sciences
    History
    Notes:
    Besprechungen
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4148-1914-017-00-000081

    Articles: DFG German National Licenses
  19. 19
    Hartmann, R.

    Berlin : Periodicals Archive Online (PAO)
    Published 1914
    Staff View
    ISSN:
    0030-5383
    Topics:
    Linguistics and Literary Studies
    Ethnic Sciences
    History
    Notes:
    Besprechungen
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4148-1914-017-00-000087

    Articles: DFG German National Licenses
  20. 20
    Hartmann, R.

    Berlin : Periodicals Archive Online (PAO)
    Published 1915
    Staff View
    ISSN:
    0030-5383
    Topics:
    Linguistics and Literary Studies
    Ethnic Sciences
    History
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:4148-1915-018-00-000015

    Articles: DFG German National Licenses