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  • 1
    Monograph available for loan
    Monograph available for loan
    New York [u.a.] : Macmillan Publishing [u.a.]
    Call number: M 93.0933
    Type of Medium: Monograph available for loan
    Pages: xvii, 92 S.
    Edition: 3rd ed.
    ISBN: 0024181900
    Classification:
    E.5.
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Biochemistry 14 (1975), S. 3715-3724 
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 101 (1979), S. 1890-1893 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Journal of fish biology 65 (2004), S. 0 
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Microspectrophotometry (MSP) revealed the presence of a rod and at least two cone classes (mid- and long-wavelength sensitive) in the intertidal peacock blenny Salaria pavo. Both rhodopsin and porphyropsin based visual pigments were found in all fish, together with high individual variation in the chromophore ratio. The three morphs (females, males and sneaker males) differed in their spectral sensitivities (as measured with the optomotor response) with sneakers having higher sensitivity at long-wavelengths than either males or females. This long-wave displacement of peak sensitivity could be due to elevated proportions of porphyropsin visual pigments in the sneakers’ retinae. The lenses of all morphs exhibited a short-wavelength cut-off and an unusual layer of carotenoid was found behind the retinal pigment epithelium and in the outer segments of some cones. These screening pigments could serve a photo-protective role or to improve visual contrast. No short-wave photoreceptors were located using MSP. This indicates that this cone class may be absent or present at very low numbers in the retina. This is the first in depth study of the visual system of a blenniid fish and indicates potential within-species visual variation that may be related to the species’ habitat and morph-specific behavioural requirements.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 277 (1979), S. 176-176 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] B. HALSTEAD AND COLLEAGUES REPLY : The mutual relations of salmon (an actinopterygian), lung-fish (a dipnoan) and cow (a mammal, a class which can be traced back to rhipidistian crossopterygians by way of reptiles and amphibians) are cer-tainly worthy of serious considera-tion. Gardiner et al. draw ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 56 (2000), S. 1634-1637 
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Mycobacterium tuberculosis FtsZ (MtbFtsZ), an essential protein in bacterial cell division, has been crystallized in the presence of a new inhibitor of MtbFtsZ polymerization and GTPase activity, ethyl (6-amino-2,3-dihydro-4-phenyl-1H-pyrido[4,3-b][1,4]diazepin-8-yl)carbamate (SRI-7614). Crystals of the MtbFtsZ–SRI-7614 complex (form I, 30% polyethylene glycol 4000, 0.1 M sodium citrate pH 5.6, 0.2 M NH4OAc, 293 K) belong to space group P61 or P65, with unit-cell parameters a = 88.78, c = 178.02 Å, and diffract to 2.3 Å resolution. A second crystal form, of the GDP complex, grows in the presence or absence of Mg2+ from PEG 4000 at 277 K or from (NH4)2SO4 at 293 K, respectively (form II, space group P6222 or P6422, with unit-cell parameters a = 135.02, c = 328.97 Å or a = 129.30, c = 327.97 Å, respectively). Complete data sets to ∼7 Å resolution have been collected from both. Exceptional form II crystals diffract to at least 4.5 Å resolution. Determination of the MtbFtsZ structure may advance the design of improved inhibitors of FtsZ polymerization.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Oecologia 33 (1978), S. 17-44 
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary An energy budget, based entirely on field data, has been constructed for a community of three New Zealand alpine grasshopper species, Paprides nitidus Hutton, Sigaus australis (Hutton) and Brachaspis nivalis (Hutton) (Acrididae). The consumption results are compared with a previous gravimetric ingestion rate study of the same field populations. Jointly, the two studies demonstrate some very specific adaptations between grasshopper energetics and feeding behaviour. Several features of the present study are: 1) the derivations of ingestion energy and respiration energy are believed to be new, using field relationships between assimilation efficiencies, egestion energy and (in the case of respiration) production energy; 2) energy differences between instars, sexes and species are shown to be associated in some cases with absolute body weight and in other cases with developmental rate criteria; 3) a wide range of energetic efficiencies is demonstrated in the course of a single life cycle, and is shown to reflect a progression of adaptations during the development of the individual; 4) major energetic differences between overwintering and non-overwintering population members are demonstrated but do not fit commonly held predictions because of alpine adaptations for depressed respiration and low ingestion energy; 5) it is suggested that the balance of low respiration and low ingestion energy necessitates a diet composition of high percent dry weight, and that it may also serve as a mechanism to govern altitudinal zonation in these grasshoppers. It is concluded from survey data that New Zealand alpine grasshoppers are rarely likely to consume more than 6% of annual primary production, and that in the majority of grasslands, their consumption is unlikely to exceed 1–2%. However, percent consumption is shown to be an inadequate measure of their impact on grasslands.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 10 (1975), S. 2010-2012 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 10 (1975), S. 1449-1451 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Crystals of compounds occurring in the solid solution range CsSnBr3-CsSnCl3 have been prepared by pulling from the melt and by Bridgman growth. The materials show a consistent change in colour and electrical resistivity from the black metallic conductor CsSnBr3 to the bright yellow CsSnCl3. The as-grown compounds undergo various structure changes from the cubic, high temperature form to lower symmetry forms on standing. These changes have been followed by DTA; they are also apparent as colour changes. X-ray examination indicates that the compounds react with atmospheric moisture to form monohydrates. The products showed some differences in their structural stability from powders of the same composition precipitated from solution. These differences are attributed to particle size effects analogous to those encountered in ferroelectric perovskites.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 12 (1977), S. 743-746 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The chemical preparation and crystal growth of 1-formyl 2(4-nitrophenyl) hydrazine are described. Its refractive indices, optical absorption coefficients and electro-optic half-wave voltages at zero and 1 MHz frequencies are reported. The method used for the determination of the half-wave voltage at 1 MHz was extremely sensitive, and could provide a useful test for optical non-linearity in small crystals.
    Type of Medium: Electronic Resource
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