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  • 1995-1999  (135)
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  • 1
    Electronic Resource
    Electronic Resource
    Acetone Conversion in a Low-Pressure Oxygen Surface Wave Plasma (1995)
    s.l. : American Chemical Society
    Environmental science & technology 29 (1995), S. 1961-1965 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es00008a011
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  • 2
    Electronic Resource
    Electronic Resource
    Use of Freeze-Thaw Flow Management for Controlling and Switching Fluid Flow in Capillary Tubes (1995)
    s.l. : American Chemical Society
    Analytical chemistry 67 (1995), S. 1470-1473 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00104a026
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  • 3
    Electronic Resource
    Electronic Resource
    Crystallization and preliminary X-ray studies on Candida cylindracea lipase (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 348-351 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: As part of the programme to understand the mechanism and specificity of lipase enzymes used in biotransformation reactions, the lipase from Candida cylindracea has been purified and crystallized. This lipase has been widely used by organic chemists for hydrolysis and esterification reactions. Crystals were obtained using polyethylene glycol 6000 as a precipitant and grew to 0.6 mm in the maximum dimension. The enzyme crystallized in the space group P21 with unit-cell dimensions a = 94.3, b = 117.0, and c = 114.2 Å with β = 109.2°. Calculations indicate that there are four molecules in the asymmetric unit. The crystals diffract to at least 2.5 Å resolution and the structure has been solved by molecular replacement using the lipase from Geotrichum candidum as a search model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0907444996014072
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  • 4
    Electronic Resource
    Electronic Resource
    Fourier transform spectroscopy of the CO-stretching band of C-13 methanol in the torsional ground state (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 6444-6455 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The Fourier transform spectrum of the CO-stretching fundamental band of 13CH3OH has been investigated at 0.002 cm−1 resolution. For the n=0 torsional ground state, 35 subbands containing some 2300 lines have been identified for K values from 0 to 10 for the three torsional symmetries A, E1, and E2 up to J values typically well over 30. The assigned transitions have been fitted to J(J+1) power-series expansions to obtain subband origins and sets of phenomenological state-specific parameters describing the J dependence of the subbands. These parameters reproduce the observed wave numbers to within the experimental uncertainty of ±0.0005 cm−1 for unblended lines, except when particularly large asymmetry shifts or perturbations due to Fermi or Coriolis resonances are present. The subband origins have been fitted to effective molecular constants for the excited CO-stretching state and a torsional barrier of 378.7(8) cm−1 is found, representing a 1.3% increase over the ground state value. A wide variety of global or J-localized perturbations has been seen, and most of the interacting states have been identified. New assignments have been obtained for far-infrared laser lines optically pumped by the 10R(2) and 9P(12) CO2 laser lines. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469359
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  • 5
    Electronic Resource
    Electronic Resource
    The structure and ground state dynamics of Ar–IH (1999)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 111 (1999), S. 5764-5770 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The structure and ground state dynamics of the atom–diatom dimer interaction between Ar and HI has been investigated by microwave and near infrared supersonic jet spectroscopy. Ab initio molecular orbital calculations were used to provide greater insight into the nature of the interaction. The ground state is shown to be in the isomeric form Ar–IH with Rcm=3.9975(1) Å, θ=149.33(1)° for the normal isotopomer and Rcm=3.9483(1) Å, θ=157.11(1)° for Ar–ID. The potential surface from an ab initio molecular orbital calculation was scaled and shifted to yield a nonlinear least-squares fit of the rovibrational state energies to the experimental data. The ground state potential energy surface obtained in this manner has a barrier between the Ar–IH and Ar–HI isomers of 88.5 cm−1 with respect to the global minimum. Such calculations are also used to predict the presence of localized states in the secondary minimum associated with isomers Ar–HI and Ar–DI. Attempts to experimentally identify transitions associated with the latter were unsuccessful. The ground state, Ar–IH isomeric structure, contrasts with the corresponding ground state of the other members of the homologous series Ar–HX (X=F, Cl, and Br) in which the Ar is bound to the proton. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.479873
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  • 6
    Electronic Resource
    Electronic Resource
    PLANT TRANSCRIPTION FACTOR STUDIES (1998)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 49 (1998), S. 127-150 
    Details
    ISSN: 1040-2519
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Notes: Abstract Major advances have been made in understanding the role of transcription factors in gene expression in yeast, Drosophila, and man. Transcription factor modification, synergistic events, protein-protein interactions, and chromatin structure have been successfully integrated into transcription factor studies in these organisms. While many putative transcription factors have been isolated from plants, most of them are only poorly characterized. This review summarizes examples where molecular biological techniques have been successfully employed to study plant transcription factors. The functional analysis of transcription factors is described as well as techniques for studying the interactions of transcription factors with other proteins and with DNA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.arplant.49.1.127
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  • 7
    Electronic Resource
    Electronic Resource
    An Ab Initio Investigation of the Reaction of Trifluoromethane with the Hydroxyl Radical (1995)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 630-633 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100002a028
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  • 8
    Electronic Resource
    Electronic Resource
    Selecting and maintaining a diverse T-cell repertoire (1999)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 402 (1999), S. 6-13 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To provide a T-cell population that will respond promptly to foreign antigen, the immune system looks inward, using the variety of self-antigens to select and maintain a diverse repertoire of receptors. A protective immune system must include a T-lymphocyte population that is poised to respond ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/402d006a0
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  • 9
    Electronic Resource
    Electronic Resource
    Selecting and maintaining a diverse T-cell repertoire (1999)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 402 (1999), S. 255-262 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To provide a T-cell population that will respond promptly to foreign antigen, the immune system looks inward, using the variety of self-antigens to select and maintain a diverse repertoire of receptors. A protective immune system must include a T-lymphocyte population that is poised to respond to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/46218
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  • 10
    Electronic Resource
    Electronic Resource
    Momentum creation by vortices in superfluid 3 He as a model of primordial baryogenesis (1997)
    [s.l.] : Nature Publishing Group
    Nature 386 (1997), S. 689-692 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To explain the creation of matter in the early Universe we begin by recalling the relationship E2 = mc4 + p2(? between energy E and momentum p for relativistic particles with rest mass m0 (c is the velocity of light). Dirac realized that the square root of this equation, E= ± (m20c4 +pV)i ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/386689a0
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