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  • 1980-1984  (140)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Zur Chemie geschmolzener Salze (1981)
    Berlin : Akad.-Verl.
    Associated volumes
    Details Availability
    Call number: MOP Per 672/A(1981,15)
    In: Sitzungsberichte der Akademie der Wissenschaften der DDR : N, Mathematik, Naturwissenschaften, Technik
    Type of Medium: Monograph available for loan
    Pages: 39 S. : Ill., graph. Darst.
    Series Statement: Sitzungsberichte der Akademie der Wissenschaften der DDR : N, Mathematik, Naturwissenschaften, Technik 1981,15
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Massenspectroskopie von Naturstoffen. XV.XIV. Mitt.: VOIGT, D.; JAENECKE G.; R. RICHTER: J. prakt. Chem. 323 (1981) 661; gleichzeitig Teil 84 in der Serie „Gibberelline“. Vergleichende Kationen-Anionen-Massenspektroskopie von Azidogibberellinen (1984)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 326 (1984), S. 187-195 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mass Spectrometry of Natural Products. XV. Comparative Positive-Negative Ion Mass Spectrometry of AzidogibberellinsThe fragmentation behaviour of 1-azido-3-hydroxy-gibberellin derivatives has been studied by means of positive and negative ion mass spectrometry, high resolution and metastable transitions. The results obtained allow a mass spectrometric distinction to be made between epimers with different stereochemistry of the ring A substituents.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19843260203
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  • 3
    Electronic Resource
    Electronic Resource
    Crystallization, melting, and morphology of low molecular weight polyethylene fractions (1984)
    s.l. : American Chemical Society
    Macromolecules 17 (1984), S. 321-331 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00133a011
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  • 4
    Electronic Resource
    Electronic Resource
    Calculation of the bidual for some function spaces (1980)
    Springer
    Mathematische Annalen 253 (1980), S. 63-87 
    Details
    ISSN: 1432-1807
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01457820
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  • 5
    Electronic Resource
    Electronic Resource
    New singlets in the phthalocyanines (1981)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 85 (1981), S. 3322-3326 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150622a023
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrastructural Study on the Development of Babesia equi (Coccidia: Piroplasmia) in the Salivary Glands of its Vector Ticks (1983)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 30 (1983), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The formation of Babesia equi sporozoites in the salivary glands of three tick species (Hyalomma anatolicum anatolicum, H. a. excavatum, Rhipicephalus turanicus) was studied by electron microscopy. The development was identical in all three vectors. On the 8th day post repletionem kinetes of B. equi had invaded alveoli of the nymphal salivary glands and were transformed to sporonts bounded by a single membrane. The sporonts were polymorphous bodies each with a highly lobed nucleus and numerous mitochondria. These stages persisted during ecdysis of the tick nymph to the adult stage. After attachment of these newly molted adults to a new host the formation of sporozoites was completed within five days. The sporonts occupied most of the infected alveolus and were extensively divided into cytoplasmic portions of various size. On the 4th day after attachment of the tick, sporozoite-anlagen, into each of which a nucleus and a mitochondrion were incorporated, appeared at the periphery of the sporonts. An apical complex with a polar ring, rhoptries, and micronemes was formed at the tip of each protruding anlage. Finally thousands of pyriform sporozoites (3.0 × 1.2 μm) filled the hypertrophied alveolus. This development is similar to sporogony in the genus Theileria.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1983.tb02907.x
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  • 7
    Electronic Resource
    Electronic Resource
    Response properties of lobster chemoreceptors: tuning of primary taste neurons in walking legs (1984)
    Springer
    Journal of comparative physiology 155 (1984), S. 593-604 
    Details
    ISSN: 1432-1351
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 1. We determined the tuning properties of 66 single chemoreceptor cells from the legs of the lobsterHomarus americanus. The specificity of these (taste) cells was tested electrophysiologically in the upper range of biologically relevant stimulus concentrations (3×10−4 mol/l) with 15 compounds listed in Table 1. 2. Most of the chemoreceptors surveyed were narrowly tuned to specific test chemicals (Fig. 3). The best stimuli for these chemoreceptors were glutamate (Glu), ammonium chloride (NH4), betaine (Bet) and hydroxyproline (OH-Pro) (Fig. 4). Cell populations were defined by their best stimulus. Populations of cells responding best to Glu and NH4 were extremely narrowly tuned; populations responding best to Bet and OH-Pro were less narrowly tuned (Fig. 5, Table 2). 3. Each cell population showed a range of response specificities, from cells responding to only one compound to cells responding more broadly to other compounds. Within each population cells were arranged by their tuning breadth (H). Cells that shared a best stimulus but responded also to other compounds showed no consistency for the next best stimulus (Fig. 6). This suggests that even cells responding to the same stimulus do not share the same receptor complement. 4. The response patterns to Glu, NH4 and Bet elicited across all the chemoreceptor cells surveyed can be distinguished statistically as different from each other and from all others tested. Similarly, OH-Pro can be distinguished from all other stimuli except glycine and taurine (Figs. 8 and 9). 5. Systematic prior exposure to all 15 test compounds (corresponding to 21 stimulus exposures) at our stimulus concentrations reduced the absolute sensitivity of Glu best cells but did not change the slope of their dose-response functions (Fig. 10) with respect to earlier results (Derby and Atema 1982a). 6. We suggest that extremely narrowly tuned cells in lobster legs may function to detect key compounds as feeding stimuli over a large dynamic range of mixture concentrations such as found in nature. These cells may not be affected as much as broadly tuned cells by ambient backgrounds of cross-adapting compounds. In addition, both narrowly tuned and broadly tuned cells may participate in across fiber patterns to encode the quality of naturally occurring stimulus mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00610845
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  • 8
    Electronic Resource
    Electronic Resource
    Enzymatic cleavage prior to antibody incubation as a method for neuropeptide immunocytochemistry (1982)
    Springer
    Histochemistry and cell biology 74 (1982), S. 457-467 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary When deplasticized Epon sections were treated with endo- and/or exopeptidases prior to incubation with antibodies, the neuropeptide immunoreactivity of secretory nerves was often altered in a predictable way. Cleavage of neurosecretory material in octopus nerves by trypsin and carboxypeptidase-B enhanced enkephalin-like immunoreactivity, while Molluscan neuropeptide-like immunoreactivity was prevented by tryptic cleavage. The enzyme effects indicated the occurrence of a heptapeptide (Tyr-Gly-Gly-Phe-Met/Leu-Arg-Phe) that contains both the enkephalin and the Molluscan neuropeptide sequence. Vasopressin terminals of the rat neurohypophysis, which presumably contain enkephalin precursor sequences, exhibited enkephalin-like immunostaining after tryptic cleavage. ACTH/β-endorphin cells of the rat intermediate pituitary, which synthesize the enkephalin sequence at the N-terminus of β-endorphin, exhibited enkephalin-like immunoreactivity when sections were treated with α-chymotrypsin or trypsin, but not after incubation with leucine-aminopeptidase or carboxypeptidase-B. Enkephalin-like immunostaining could not be induced in any way in ACTH/β-endorphin cells of the anterior pituitary. Enzymatic cleavage may give additional information in immunocytochemical localization studies on neuropeptide sequences in secretory nerves and hormonal granules.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00496659
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  • 9
    Electronic Resource
    Electronic Resource
    On the abscissa of convergence for the Laplace transform of vector valued measures (1982)
    Springer
    Archiv der Mathematik 39 (1982), S. 455-462 
    Details
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01899547
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  • 10
    Electronic Resource
    Electronic Resource
    Enkephalins co-exist with oxytocin and vasopressin in nerve terminals of rat neurohypophysis (1981)
    [s.l.] : Nature Publishing Group
    Nature 289 (1981), S. 502-504 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Neural lobes of five normal white rats and four Brattleboro rats homozygous for hypothalamic diabetes insipidus were fixed with paraformaldehyde and glutaraldehyde and embedded in Epon. Resin was removed from serial 0.5-µm sections and Sternberger's unlabelled antibody-enzyme method applied ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/289502a0
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