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  • 2000-2004  (24)
  • 1985-1989  (14)
  • 1960-1964  (10)
  • 1955-1959  (8)
  • 1945-1949  (4)
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Years
Year
  • 11
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 47 (1955), S. 2528-2532 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 50 (1958), S. 1153-1156 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 58 (1989), S. 533-569 
    ISSN: 0066-4154
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Biology
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 43 (1987), S. 346-361 
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The methods used to solve the structure of human rhinovirus 14 at 3.0 Å resolution are described in detail. The crystals are cubic, space group P213, a = 445.1 Å with 20-fold non-crystallographic redundancy and with approximately 55% solvent and RNA content. The data used to solve the structure were collected at the Cornell High Energy Synchrotron Source (CHESS) using oscillation photography. Most of the computations were performed on Purdue University's Cyber 205 supercomputer. Two heavy-atom derivative data sets from crystals soaked in 1 and 5 mM KAu(CN)2 were used to provide isomorphous phasing to 4 Å resolution, although it was subsequently shown that phases beyond 5 Å resolution were random. The phases were refined at 5 Å resolution by five cycles of real-space molecular replacement. Phase extension from 5 to 3 Å was then performed using 60 cycles of real-space molecular replacement while extending the resolution in steps of three reciprocal-lattice points at a time once every three cycles. The 3.5 Å skew-averaged map was easily interpreted and showed 811 of the 855 amino acids in the four distinct viral polypeptide chains. A complete atomic model has been built using FRODO on an Evans & Sutherland PS300 graphics system with respect to the 3.08 Å resolution electron density map. The roles of the non-crystallographic symmetry, solvent content, errors in amplitudes, orientation and translation in the molecular replacement process are discussed.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 890-893 
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A third-generation synchrotron source was used to collect data from crystals with a very large unit cell. There was an increase in the effective resolution of the data from 5 to 3.5 Å. Data were collected on crystals of HK97 mature empty capsids, space group P21, with unit-cell parameters a = 580, b = 625, c = 790 Å, β = 90.0°. Like other crystals with very large unit-cell dimensions, the intensity falls off rapidly as a function of resolution, with a precipitous drop beginning at 9 Å resolution. Synchrotron data from these crystals were previously observed at the CHESS F1 beamline to about 3.5 Å resolution, but the intensities could not be accurately measured beyond 5 Å. In experiments conducted at the Advanced Photon Source (APS) beamline 14-BM-C, data from identical crystals could be processed to a resolution of 3.5 Å. The lifetime of the crystals in the beam was increased from one exposure per crystal volume to between four and eight exposures per crystal volume. More than 500 images were collected in two trips, allowing the extension of the resolution of the data set and the structure determination to 3.5 Å resolution. Factors in the increased resolution may include X-ray flux, beamline geometry and low background scatter. These results suggest that other crystals with large unit cells and pronounced intensity falloff with resolution may benefit from the use of this or similar beamlines.
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  • 16
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 42 (1986), S. 1656-1657 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 42 (1986), S. 1657-1658 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 18
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The oligomer U(U-A)6A was synthesized chemically in solution, using a modified version6 of the phosphotriester method adapted for construction of oligoribonucleotides7'8 and its ther-modynamic parameters were obtained from a least squares analysis of its melting curve9 (Fig. 1). The crystals of ...
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  • 19
    Electronic Resource
    Electronic Resource
    Springer
    Marine biology 96 (1987), S. 151-156 
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The relative toxicities of Arabian Light crude oil, Tirrawarra crude oil, Dispersant BP-AB, and mixtures of oils and dispersant were assessed on 30 mangroves, Avicennia marina (Forsk.) Vierh. var. resinifera (Forst.) Bakh., in a coastal fringe on the eastern shore of Gulf St. Vincent, South Australia. Five treatments were applied: 100% Arabian Light crude oil, 100% Tirrawarra crude oil, Arabian Light crude oil plus dispersant (1:1), Tirrawarra crude oil plus dispersant (1:1) and 100% dispersant. Five mangroves were used for each of the treatments and five as controls. Defoliation, leaf damage, pneumatophore damage, flowering and fruiting were monitored for three years (September 1982–September 1985). Initially, the toxicity of both oils was increased by the addition of dispersant; Tirrawarra crude oil plus dispersant caused significant defoliation. 100% Tirrawarra crude oil was more toxic than 100% Arabian Light crude oil; the former caused significant leaf damage from Week 4 to Week 12 after treatment. After Week 49 production of new leaves was significantly greater in the Arabian Light crude oil plus dispersant treatment than with the Arabian Light crude oil. No such difference was found between the Tirrawarra treatments. Twelve to 26 weeks after treatment, partial pneumatophore damage was observed in all treatments. No atypical flower or fruit production was observed.
    Type of Medium: Electronic Resource
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  • 20
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal of Electron Microscopy Technique 4 (1986), S. 81-87 
    ISSN: 0741-0581
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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