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  • Chemistry  (10)
  • Anterograde tracing  (1)
  • CR: 5.13  (1)
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Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Numerische Mathematik 38 (1982), S. 129-139 
    ISSN: 0945-3245
    Keywords: AMS(MOS) 65D15 ; CR: 5.13
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary In this paper duality theory is used to derive an algorithm for the solution of the discrete linearL p approximation problem (for 1〈p〈2). This algorithm turns out to be similar to existing iteratively reweighted least squares algorithms, but can be shown to be globally andQ-superlinearly convergent.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-0878
    Keywords: Key words Nucleus ambiguus ; Enteric nervous system ; Motor endplate ; Vasoactive intestinal peptide (VIP) ; Calcitonin gene-related peptide (CGRP) ; Coinnervation ; Anterograde tracing ; Rat (Wistar)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  We investigated the origin of galanin-positive nerve fibers on motor endplates in rat esophagus using anterograde 1,1′-dioleyl-3,3,3′,3′-tetramethylindocarbocyanine methane sulfonate (DiI) tracing from the nucleus ambiguus combined with galanin immunocytochemistry and calcitonin gene-related peptide immunocytochemistry. To demonstrate spatial relationships of galanin-positive nerve fibers to vagal and enteric nerve fibers on motor endplates, we combined galanin immunocytochemistry with calcitonin gene-related peptide immunostaining for labeling of vagal terminals, and vasoactive intestinal peptide immunoreactivity and NADPH-diaphorase histochemistry for demonstration of enteric nerve fibers. Within fine varicose nerve fibers, galanin was colocalized with vasoactive intestinal peptide and NADPH-diaphorase to a high degree and turned out to be completely separated from calcitonin gene-related peptide-positive or anterogradely DiI-labeled vagal motor terminals. These results indicate that the enteric nervous system is the most important and possibly the only source of galanin-positive nerve terminals on motor endplates in rat esophagus. Galanin may be, in addition to nitric oxide and vasoactive intestinal peptide, a mediator of the enteric coinnervation of striated muscle in this organ.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 57 (1985), S. 614-616 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A thorough search for electrocatalysts for anodic oxygen evolution from caustic potash solution together with an investigation for the main reasons of ohmic potential drops in the interelectrode gap has lead to a new concept for an advanced medium temperature (150° to 200°C), medium pressure (30 to 100 bars) alkaline water electrolysis. The new concept will allow electrolytic water decomposition at temperatures between 160° and 200°C with current densities of 1 to 1.5 A/cm2 and cell voltages between 1.55 and 1.65 V.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 71 (1959), S. 626-627 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1999 (1999), S. 3455-3458 
    ISSN: 1434-193X
    Keywords: Stereoselectivity ; Carbonyliron Complex ; Oxidation ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The tricarbonyliron complex 2a underwent selective and diastereoselective oxidation with tert-butyl hydroperoxide at room temperature to provide, after decomplexation, the peroxyether 5 which, on reduction, yielded the corres-ponding secondary alcohol 7.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 576 (1989), S. 225-228 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reaction of (CH3)2 Te with CF3I: Preparation and Properties of [(CH3)2TeCF3]IThe irradiation of a mixture of (CH3)2 Te and CF3I at low temperature yields [(CH3)2TeCF3]I. From the thermal decomposition as well as in polar solvents CH3TeCF3 and CH3I are formed. Attempts to prepare bis- or tris(trifluoromethyl)tellurium compounds from these reactions failed. [(CH3)2TeCF3]I reacts with salts or acids to form many new derivatives of the composition [(CH3)2TeCF3]X (X = Cl, NO3, 1/2 SO4, OCOCH3, OCOCF3, B(C6H5)4, OC6H2(NO2)[3].
    Notes: Bei tiefer Temperatur unter Bestrahlung reagieren (CH3)2Te und CF3I zu [(CH3)2 TeCF3]I, das bei der thermischen Zersetzung oder in polaren Lösungsmitteln zu CH3TeCF3 und CH3I zerfällt. Die Bildung von Bis- bzw. Tris(trifluormethyl)tellur-Verbindungen gelingt bei diesen Reaktionen nicht. Durch Umsetzung von [(CH3)2TeCF3]I mit Salzen oder Säuren werden zahlreiche neue Derivate der Form [(CH3)2TeCF3]X synthetisiert X = Cl, NO3, 1/2 SO4, OCOCH3, OCOCF3, B(C6H5)4, OC6H2(NO2)3).
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 378 (1970), S. 37-48 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Colourless phosphorus is volatile with CCl4 vapour. In the presence of oxygen, phosphorus vapour in gaseous CCl4 is only oxidised to a negligible extent. Quenching of phosphorus/CCl4 vapour mixture results in the formation of conglomerates of colourless phosphorus having molar masses up to 8200 (≙ 66 P4 molecules). Such conglomerates are oxidised by oxygen. The oxidation products exhibit an atomic ration P : 0 ≍ 2 : 3 being, however, no polymeric forms of P4O6 (as supposed by BLASER), but probably polymeric cross  -  linked mixed oxides with a statistical oxygen distribution.
    Notes: Farbloser Phosphor ist mit Tetrachlorkohlenstoff dampfflüchtig. Mit Sauerstoff erfolgt in Gegenwart von Tetrachlorkohlenstoffdampf nur eine unwesentliche Oxydation des Phosphordampfes. Beim Abschrecken des Dampfgemisches bilden sich Konglomerate von farblosem Phosphor entsprechend mittleren Teilchengewichten bis zu 8200. Solche Konglomerate werden durch Sauerstoff oxydiert, Die Oxydationsprodukte zeigen ein Phosphor-Sauerstoffverhältnis von ca. 2 : 3. Sie sind nicht, wie BLASER annahm, Polymere des Phosphor(III)-oxid, P4O6, sondern stellen wahrscheinlich polymere, vernetzte Mischoxide mit statistischer Sauerstoffverteilung dar.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: During the last fifty years the chemistry of chloroamine has been developed intensively. Many mechanisms for the reaction between chloroamine and ammonia have been forwarded and discarded again. Today, two mechanisms are discussed which so far both cannot be discarded: The SN2-mechanism and the mechanism including nitrogen monohydride as an intermediate. Nitrogen monohydride, prepared hitherto from hydrogen azide, ammonia, and hydrazine can be isolated at lower temperatures in probably oligomeric state.
    Notes: Nach über einem halben Jahrhundert intensiver Entwicklung der Chloraminchemie und nach Aufstellung und Widerlegung vieler Mechanismen für die Chloramin-Ammoniak Reaktion stehen sich heute zwei Mechanismen gegenüber, die beide durch die bisherigen Experimente nicht zu entkräften sind: Der SN2-Mechanismus und der Mechanismus über Stickstoffmonohydrid als Zwischenprodukt. Stickstoffmonohydrid läßt sich bisher aus Hydrogenazid, Ammoniak und Hydrazin erhalten und bei tiefen Temperaturen in wahrscheinlich oligomerem Zustand ausfrieren.
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