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  • Chemistry  (6)
  • SPACE SCIENCES  (5)
  • Parotid  (1)
  • 1970-1974  (12)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 107 (1970), S. 403-420 
    ISSN: 1432-0878
    Keywords: Parotid ; Peroxidase ; Secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die Lokalisation endogener Peroxydase wurde in der Glandula parotis der Ratte mit der Methode von Graham und Karnovsky (1966) untersucht. Lichtmikroskopisch ist das Reaktionsprodukt im basalen Cytoplasma, in den Sekretgranula und, nach Pilocarpinreizung, in den Lumina der interzellulären Sekretkapillaren, der Drüsenendstücke und der Schaltstücke nachweisbar. Der Speichel enthält eine Peroxydase, die durch Hitze (100°) und durch KCN und 3-Amino-1,2,4-Triazol hemmbar ist. Der Speichel zeigt bei 415 mμ eine Schulter im Absorptionsspectrum, die nach Komplexbildung mit H2O2 um 15 mμ nach rechts verschoben wird. Elektronenmikroskopisoh läßt sich das Reaktionsprodukt der Peroxydase in allen Cisternen des rauhen endoplasmatischen Reticulums, einschließlich der perinucleären Cisterne, in glattwandigen Bläschen zwischen rauhem endoplasmatischen Reticulum und Golgi-Membranstapeln, in den kondensierenden Vacuolen und in allen Sekretgranula nachweisen. Die Cisternen des Golgi-Apparates enthalten selten Reaktionsprodukt. In der Glandula parotis der Ratte sind vorwiegend die kondensierenden Vacuolen, in geringerem Maße auch die Cisternen des Golgi-Apparates, an der Segregierung und Kondensierung von Peroxydase beteiligt.
    Notes: Summary The localization of endogenous peroxidase was investigated in the parotid gland of the rat by the method of Graham and Karnovsky (1966). By light microscopy, the reaction product was localized in the basal cytoplasm, in secretion granules, and, after injection of pilocarpine hydrochloride, in the lumina of the intercellular canaliculi, the acini and the intercalated ducts. The peroxidase reaction of the saliva collected from the oral cavity can be suppressed by heat (100° C), by 3-amino-1,2,4-triazole, and by KCN. Absorption spectra of the saliva show a shoulder at 415 mμ which is shifted by 15 mμ towards longer wave lengths after complexing with H2O2. At the ultrastructural level, reaction product is present in all cisternae of the rough endoplasmic reticulum including the perinuclear cisternae, in smooth vesicles located between the rough endoplasmic reticulum and the stacks of Golgi cisternae, in condensing vacuoles, and in all secretion granules. The Golgi cisternae seldom contain reaction product. The results show that in the parotid gland of the rat, the condensing vacuoles and, to a lesser extent, the cisternae of the Golgi apparatus function in the segregation and condensation of peroxidase.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 115-124 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Reaction of Boron Trifluoride with Bis(trimethylsilyl)amineBF3 reacts with bis(trimethylsilyl)amine below 0° to give [(CH3)3Si]2NH·BF3 (1). Above 0° the adduct (CH3)3SiNH2·BF3 (3) is formed by elimination of (CH3)3SiF besides the borazines 6-8 and small amounts of the aminoborane 4 and BF3·NH3. The thermal decomposition of 3 in dioxane leads to the formation of BF3·NH3. The reaction of 1 and 3 with the adduct of BF3 and ethyldiisopropylamine gives 4 resp. 8 in high yields. 8 can also be obtained by the thermal decomposition of 4 and by the fluorination of 2.4.6-trichloro-1.3.5-tris(trimethylsilyl)borazine (9) with NaF. 4 reacts with [(CH3)3Si]2NH to give the bis-(amino)borane 10. - The i.r., Raman, n.m.r. and mass spectra are reported.
    Notes: BF3 reagiert mit Bis(trimethylsilyl)-amin unterhalb 0° zu [(CH3)3Si]2NH·BF3 (1). Oberhalb 0° bildet sich unter Abspaltung von (CH3)3SiF das Addukt (CH3)3SiNH2·BF3 (3) neben den Borazinderivaten 6-8 sowie kleinen Mengen des Aminoborans 4 und BF3·NH3. Die thermische Zersetzung von 3 in Dioxan führt u.a. zu BF3·NH3. Setzt man 1 und 3 mit dem Addukt aus BF3 und Äthyldiisopropylamin um, so erhält man 4 bzw. 8 in guten Ausbeuten. 8 läßt sich auch durch therm. Zersetzung von 4 und durch Fluorierung von 2.4.6-Trichlor-1.3.5-tris(trimethylsilyl)-borazin (9) mit NaF darstellen. 4 reagiert mit [(CH3)3Si]2NH zu dem Bis(amino)-boran 10. - Die IR-, Raman-, NMR- und Massenspektren werden mitgeteilt.
    Additional Material: 4 Tab.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 83 (1971), S. 990-990 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 10 (1971), S. 945-945 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 84 (1972), S. 648-648 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 387 (1972), S. 81-90 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The temperature dependence of the magnetic susceptibility and the EPR were investigated on 12 element dipyridyls. The magnetism of the main group compounds and of ScDipy3 depends strongly on the temperature, owing to spin interaction of radical anions. The temperature dependence is less marked in other transition metal compounds. It is attempted to explain the dependence by means of the LCAO-MO theory.
    Notes: Es wurde die Temperaturabhängigkeit der magnetischen Suszeptibilität und die paramagnetische Elektronenresonanz von 12 Elementdipyridylen untersucht.Bei den Hauptgruppenverbindungen und ScDipy3 ist der Magnetismus infolge Spinwechselwirkung von Radikalanionen stark temperaturabhängig. In den übrigen Übergangsmetallverbindungen ist die Temperaturabhängigkeit weniger ausgeprägt. Es wird versucht, sie auf Grund qualitativer Betrachtungen nach der LCAO-MO-Theorie zu erklären.
    Additional Material: 9 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 11 (1972), S. 649-649 
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 8
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    Publication Date: 2019-06-27
    Description: Mass spectroscopy for solar system exploration, discussing ion sources, mass analyzers and ion detectors meeting mission requirements
    Keywords: SPACE SCIENCES
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  • 9
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    Publication Date: 2019-06-27
    Description: Absolute production rates of He 3 and Ne 21 in average chondrites, determining radiation ages of stony meteorites aged less than two million years
    Keywords: SPACE SCIENCES
    Type: ; - DISCRETE CONTROL S
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  • 10
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    Publication Date: 2019-06-27
    Description: Aubrite radiation age dating for stony meteorites lifetimes as function of collisional destruction, using Ne 21/Al 26 methods
    Keywords: SPACE SCIENCES
    Type: ; 99-102 (
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