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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    HNO 48 (2000), S. 937-942 
    ISSN: 1433-0458
    Keywords: Schlüsselwörter Nasometer ; Nasalanz ; Nasalität ; Sprachphysiologie ; Normwerte ; Keywords Nasometer ; Nasalance ; Nasality ; Norms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract In the United States of America, the nasometer was developed by Fletcher as an objective method for measuring nasality. There are no accepted normal values for comparable test materials regarding the German language. The aim of this study was the examination of the auditively normal nasality of Saxon-speaking people with the nasometer. The nasalance of 51 healthy Saxon-speaking test persons with auditively normal nasality was measured with a model 6200 nasometer (Kay-Elemetrics, U.S.A.). The text materials used were the vowels “a”, “e”, “i”, “o”, and “u”, the sentences “Die Schokolade ist sehr lecker” (“The chocolate is very tasty”) and “Nenne meine Mama Mimi” (“Name my mama Mimi”), and the texts of “North wind and sun”, “A children's birthday”, and an arbitrary selection from Strittmatter. The mean nasalance for the vowels was 17.7%, for the sentence containing no nasal sounds 13.0%, and for the sentence containing many nasal sounds 67.2%. The mean value of the texts was 33–41%. The results for the texts agreed well with the results of Reuter (1997), who examined people from the state of Brandenburg. A range from 20% to 55% is suggested as the normal value for nasalance in the German-speaking area.
    Notes: Zusammenfassung In den USA wurde von Fletcher das Nasometer als objektive Nasalitätsmessmethode entwickelt. Für das Nasometer bestehen im deutschsprachigen Raum für vergleichbare Testmaterialien keine anerkannten Normwerte. Anliegen der vorliegenden Studie ist die Untersuchung der auditiv normalen Nasalität im sächsischen Sprachraum mit Hilfe des Nasometers. Es wurden die Nasalanzwerte von 51 gesunden Testpersonen mit auditiv normaler Nasalität aus dem sächsischen Sprachraum mit dem Nasometer (Modell 6200, Fa. Kay-Elemetrics, USA) bestimmt. Als Testmaterialien wurden die Vokale “a”, “e”, “i”, “o”, “u”, die Sätze “Die Schokolade ist sehr lecker” und “Nenne meine Mama Mimi”, sowie die Texte “Nordwind und Sonne”, “Ein Kindergeburtstag” und ein Auszug aus dem Text “Der große Gesang” von Strittmatter benutzt. Der Mittelwert der Nasalanz für den keine Nasallaute enthaltenden Satz liegt bei 13,0%, für Vokale bei 17,7%. Der mittlere Nasalanzwert beträgt für den viele Nasale enthaltenden Prüfsatz 67,2%. Der Mittelwert der Texte liegt bei 33–41%. Die Ergebnisse für die Texte stimmen gut mit den Ergebnissen von Reuter aus dem brandenburgischen Sprachraum überein. Als Normwert für die normale Nasalanz im deutschsprachigen Raum wird für gemischte Texte der Bereich von 20–55% vorgeschlagen.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 117-124 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metalloporphyrin Complexes. VI. Synthesis of Polymethacrylates with Covalently Bound Iron (III)-protoporphyrin IXConvenient synthesis of polymeric iron (III)-protoporphyrin IX (hemin) compounds is described. The covalent linkage via the carboxylic groups of hemin is possible by the reaction of the activated ester of hemin with polymethacrylates containing aliphatic amino groups. Polymethacrylates with aromatic amino groups are suitable to immobilize the hemin via its methine bridges. The hemin-containing polymers are characterized by visible spectra and e.p.r.-spectroscopy.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Neue Imidazol enthaltende Polymere wurden durch nucleophile Substitutionsreaktionen von Poly(ethylen-methacrylatarylsulfonaten) mit Imidazol, Benzimidazol und einigen Derivaten hergestellt. Die Reaktionszeit und die verwendeten Lösungsmittel zeigten wechselnde Effekte auf die Geschwindigkeiten. Der Umsatz war am besten reproduzierbar bei hohen Reaktionsgeschwindigkeiten in Ethanol.
    Notes: New imidazole containing polymers were synthesized by nucleophilic substitution reactions of poly(ethylene methacrylate arylsulfonates) with imidazole, benzimidazole and some of their derivatives. The reaction time and the solvents used had varying effects on the binding rates. The conversion was best reproducible at high reaction speed in ethanol.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 97 (1981), S. 161-169 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Imidazol enthaltende Polymere wurden durch polymeranaloge Reaktion von Poly(ethylen-methacrylat-arylsulfonaten) mit substituierten Imidazolderivaten hergestellt. Die Imidazolderivate mit exocyclischen funktionellen Gruppen wurden an die Polymermatrix über Seitenketten gebunden. Durch weitere polymeranaloge Reaktionen wurden die exocyclischen funktionellen Gruppen zu Imidazol enthaltenden Polymeren mit primären Aminogruppen oder Carboxylgruppen umgesetzt.
    Notes: Imidazole containing polymers were synthesized by polymer-analogous reactions of poly(ethylene methacrylate arylsulfonates) with substituted imidazole derivatives. The imidazole derivatives with exocyclic functional groups were bound to the polymer matrix via spacers. By further polymer-analogous reactions the exocyclic functional groups were modified, so as to give rise to imidazole containing polymers with primary amino groups or carboxyl groups.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Electroanalysis 1 (1989), S. 535-539 
    ISSN: 1040-0397
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The parameters and the measuring principle of a urease electrode are described. The urease is physically entrapped in cellulose triacetate on the active surface of a pH glass electrode with an internal reference electrode. The Michaelis constant of immobilized urease was similar to that of soluble enzyme (KM = 2.40 mmol/L). The average apparent enzyme activity amounts to 2 IU per sensor preparation. An enzyme loading factor of 0.04 was determined. It indicates kinetically controlled reaction conditions of the sensor. A fixed-time measuring procedure provides a response time of 30 seconds and a linear response within a concentration range of 2 to 40 mmol/L urea in real biological samples (e.g., serum).
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Cell Biochemistry and Function 6 (1988), S. 131-135 
    ISSN: 0263-6484
    Keywords: Adenylate cyclase ; insulin-producing tumour cells ; N-proteins ; forskolin ; GppNHp ; thiols ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: In crude membrane fractions of rat pancreatic islets and of RIN-A2-cells, forskolin and NaF stimulated adenylate cyclase activity. Basal and stimulated enzyme activity was approximately 3 to 6 fold higher in membranes of RIN-A2-cells than in membranes of islet cells. In RIN-A2-cells GppNHp and NEM inhibited forskolin-stimulated cyclase system of RIN-A2-cells contains inhibitory and stimulatory N-proteins and that there are critical thiols related to Ni, Ns and/or the catalytic unit. Thus, membrane fractions of RIN-A2-cells may be an appropriate model for studies on the adenylate cyclase system of insulin-producing cells.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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