Search Results - (Author, Cooperation:K. Forster)

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  1. 1
    Staff View
    Publication Date:
    2015-05-09
    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
  2. 2
    Staff View
    Publication Date:
    2012-05-12
    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
    Publication Date:
    2014-02-21
    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
  4. 4
    Davis, M. F. ; Wosik, J. ; Forster, K. ; Deshmukh, S. C. ; Rampersad, H. R. ; Shah, S. ; Siemsen, P. ; Wolfe, J. C. ; Economou, D. J.

    [S.l.] : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We describe the transport and structural properties of YBa2Cu3O7−δ thin films deposited by pulsed laser ablation with computer-controlled substrate scanning. Films were deposited on LaAlO3 and SrTiO3 substrates covering a 2×3 cm area with thicknesses of 90 and 160 nm. The 90-nm thick films exhibited a thickness variation of ±8%, Tco = 90.7 ± 0.5 K, Jc = 4.8 ± 0.2 × 106 A/cm2 at 77 K, and a surface resistance (corrected for finite thickness) at 75 GHz of 10–12 mΩ at 77 K. For the 160-nm thick films, the thickness variation was 〈5%, Tco = 91.0 ± 0.3 K, Jc=5.4±0.4×106 A/cm2, and corrected surface resistance was 6–10 mΩ. X-ray diffraction showed that the c-axis mosaic in the films is closely related to that of the substrates and that the only in-plane defects are due to the expected twinning in the a-b plane of the film. The c-axis lattice constants were 1.1688±0.0004 nm. The above properties showed a high degree of uniformity across the substrate area and between films from different deposition cycles. The surface resistance values add significantly to the body of results which show that the temperature-scaled values for niobium can be equaled and perhaps surpassed by YBa2Cu3O7−δ.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.347611

    Articles: DFG German National Licenses
  5. 5
    Richardson, J. T. ; Yiagas, D. I. ; Turk, B. ; Forster, K. ; Twigg, M. V.

    [S.l.] : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    It has been known for some time that particles of nickel oxide of less than about 100 nm in size show superparamagnetism that increases as the particle size decreases. The origin of the particle magnetic moment responsible for this behavior has never been fully explained. This research indicated that the size of the particle rather than the presence of nonstoichiometry or impurities of reduced nickel determines the moment. The critical experiment was the measurement of magnetization versus magnetic field for a sample of nickel oxide prepared under conditions that preclude metallic nickel. Almost identical results were found for the original sample, which was black in color and thus nonstoichiometric, and after mild reduction in hydrogen at 400 K, which produced stoichiometry and changed the color to green. The magnetic susceptibility was inversely proportional to the particle size for a given method of preparation. This is consistent with a simple model of incomplete edges on the bounding planes of the crystallite and provides a possible basis for a practical method for measuring particle size in nickel oxide-containing samples.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.349826

    Articles: DFG German National Licenses
  6. 6
    Yu, N. ; Romero-Borja, F. ; Zhang, Z. H. ; Cui, X. T. ; Liu, J. R. ; Wood, L. T. ; Chu, W. K. ; Marton, D. ; Rabalais, J. W. ; Forster, K. M. ; Reeber, R. R.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1993
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Boron carbide (B4C) is a wear resistant material with hardness slightly less than that of diamond. It has an excellent strength to weight ratio and relatively high toughness under controlled processing. These essential mechanical properties make B4C an ideal candidate for cutting tool and bearing applications. We will demonstrate that hexagonal boron nitride (h-BN), a good solid lubricant, can be formed on B4C surfaces through high temperature (850 °C) nitrogen ion implantation. The formation of composite B4C and h-BN on the B4C surface can potentially reduce surface friction coefficients, making the material more attractive for tribological applications.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.110722

    Articles: DFG German National Licenses
  7. 7
    Staff View
    ISSN:
    0167-4781
    Keywords:
    (Xenopus oocytes) ; DNA methylation ; SV40 ; SV40 enhancer ; TK gene ; Transcription inhibition
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0167-4781(90)90006-N

    Articles: DFG German National Licenses
  8. 8
    Etherington, D.M. ; Forster, K.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0305-750X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Geography
    Political Science
    Sociology
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0305-750X(92)90032-Q

    Articles: DFG German National Licenses
  9. 9
    Selvamanickam, V. ; Forster, K. ; Salama, K.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0921-4534
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0921-4534(91)90170-4

    Articles: DFG German National Licenses
  10. 10
    Staff View
    ISSN:
    0014-5793
    Keywords:
    5S rRNA gene ; DNA methylation ; Oocyte ; RNA polymerase III ; Transcription ; tRNA^l^y^sgene
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0014-5793(90)81193-R

    Articles: DFG German National Licenses
  11. 11
    Staff View
    ISSN:
    0006-291X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Biology
    Chemistry and Pharmacology
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1016/0006-291X(90)91685-L

    Articles: DFG German National Licenses
  12. 12
    Platt, D. ; Forster, K. ; Foster, L.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0047-6374
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0047-6374(78)90064-7

    Articles: DFG German National Licenses
  13. 13
    Staff View
    ISSN:
    0168-583X
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0168-583X(91)95599-9

    Articles: DFG German National Licenses
  14. 14
    HOLMES, V. M. ; FORSTER, K. I.

    New York : Periodicals Archive Online (PAO)
    Published 1972
    Staff View
    ISSN:
    0749-596X
    Topics:
    Psychology
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:b180-1972-011-02-000003

    Articles: DFG German National Licenses
  15. 15
    FORSTER, K. I. ; DICKINSON, R. G.

    New York : Periodicals Archive Online (PAO)
    Published 1976
    Staff View
    ISSN:
    0749-596X
    Topics:
    Psychology
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:b180-1976-015-02-000002

    Articles: DFG German National Licenses
  16. 16
    FORSTER, K. I.

    New York : Periodicals Archive Online (PAO)
    Published 1981
    Staff View
    ISSN:
    0749-596X
    Topics:
    Psychology
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:b180-1981-020-02-000003

    Articles: DFG German National Licenses
  17. 17
    Bartelt, H.O. ; Forster, K.-D.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0030-4018
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://linkinghub.elsevier.com/retrieve/pii/0030-4018(78)90331-0

    Articles: DFG German National Licenses
  18. 18
    Forster, K. A.
    Springer
    Published 1937
    Staff View
    ISSN:
    1432-1246
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Zusammenfassung Es werden Überempfindlichkeits-Erscheinungen bei Bienengiftarbeiterinnen erstmalig beschrieben. Für dieselben wird nicht das beim Stich injizierte Bienengift, sondern ein Geruchstoff verantwortlich gemacht, welcher beim Stich von Bienen wahrzunehmen ist und welcher anscheinend durch Ätherextraktion von nativem Bienengift isoliert werden kann. Die Erscheinungen, welche ohne therapeutische Maßnahmen in wenigen Tagen wieder völlig verschwinden, werden als allergische Reaktion angesehen.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF02124366

    Articles: DFG German National Licenses
  19. 19
    Kohav, T. ; Forster, K. M. ; Richardson, J. T. ; Luss, D.

    Hoboken, NJ : Wiley-Blackwell
    Published 1997
    Staff View
    ISSN:
    0001-1541
    Keywords:
    Chemistry ; Chemical Engineering
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Process Engineering, Biotechnology, Nutrition Technology
    Notes:
    Two reversible reactions are involved in YBa2Cu3O6+x formation: a reaction between BaCO3 and CuO forming BaCuO2 and CO2, and a reaction of BaCuO2 with Y2O3 and CuO forming YBa2Cu3O6 which undergoes phase transformation to YBa2Cu3O6+x upon cooling. In-situ isothermal time resolved HT-XRD of a thin film was used to quantify the effect of CO2 on the kinetics of the first reaction. Increased CO2 partial pressure shifts the reactions to higher temperatures. At high CO2 partial pressure (〉2 vol. %), the rate of the first reaction becomes essentially a step process with a very high activation energy. Noninstantaneous nucleation of the reaction products occurs at low CO2 partial pressure (0.5-1%) and temperatures (700°C). The data fit a 2-D diffusion-controlled mechanism with a zero nucleation rate for BaCO3 decomposition and a second-order nucleation rate for YBa2Cu3O6 formation. A comparison of the kinetics of a thin film (10 mm) as determined by HT-XRD with those of a thick sample (2 mm) determined by TG revealed that the transport of CO2 within the sample pores and to the ambient gas significantly affect the decomposition of BaCO3. For example, the formation of YBa2Cu3O6 in a thick precursor layer occurs in the 840 to 940°C range, exceeding by about 200°C that in which it is formed in thin films.
    Additional Material:
    9 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/aic.690430422

    Articles: DFG German National Licenses
  20. 20
    Henke, H. ; Forster, K.

    Weinheim : Wiley-Blackwell
    Published 1981
    Staff View
    ISSN:
    0935-6304
    Keywords:
    Liquid chromatography, HPLC ; Quantitative analysis of terephthalates ; Linear calibration curve ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Additional Material:
    2 Ill.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1002/jhrc.1240040812

    Articles: DFG German National Licenses