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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 8 (1960), S. 252-257 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 309-310 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] TABLE 1.EFFECT OF VARIOUS SOLVENTS* ON THE BATE OF HYDROLYSIS OF ACETYLCHOLINE BY ACETYLCHOLINESTERASE FROM COCKROACH GANGLIA Solvent Average 6sot Activation ratio Solvent 6 so Control 680 iso- Octane Dioxane Ethyl alcohol Acetone iso-Butanol iso-Amyl alcohol i*o-Propanol w-Propanol ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 126-126 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Electronic time-switch for solenoid valve d 80 mfd. electrolytic 150 w.v. SR Ci 20 mfd. electrolytic 250 w.v. XX C 2 mfd. electrolytic 250 w.v. Rt Ct 10 mfd. electrolytic 250 w.v. R*,R O6 20 mfd. electrolytic 250 w.v. J24 Ce 40 mfd. electrolytic 250 w.v. P T 'Hammond 2QQB', ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 582-582 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] With respect to insects, Mellanby1'2 showed for a number of species that their activity at low temperatures was modified by their previous thermal history, thus indicating that insects became acclimatized to temperature. Thermal acclimatization experiments have been carried out with the German ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 188 (1960), S. 854-855 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Partition chromatography and the frog rectus abdominis muscle were used to identify acetylcholine. Royal jelly was heated to boiling point in a small volume of distilled water,. 3.9, and when the extract was cool, trichloracetic acid was added to give a final concentration of 1 per cent. The ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 19 (1963), S. 9-10 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Biologischer und chemischer Nachweis von 5-Hydroxytryptamin im Nervengewebe vonPeriplaneta americana und erster Bericht über die Synthese: Die Substanz konnte in Geschlechtsdrüsen, Eingeweiden und Malpighischen Gefässen nicht positiv identifiziert werden. Sie wird bei enthirnten und bauchmarklosen Tieren zu 5-Hydroxytryptamin decarboxyliert.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 3 (1960), S. 27-37 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung 1. Die experimentellen Daten zeigen, daß Blattella nach einer Akklimatisierungs-Temperatur von 15° C resistenter gegen Kälte ist als nach einer solchen von 25° C oder 35° C. 2. Nach einer Akklimatisierungs-Temperatur von 10° C tritt Kältestarre bei der gleichen Temperatur ein wie nach einer Akklimatisierungs-Temperatur von 15° C. Dies zeigt, daß nach Unterschreiten einer Minimaltemperatur keine weitere Akklimatisierung stattfindet. 3. Die Geschwindigkeit, mit der eine Akklimatisation bei 15° C, 25° C und 35° C erfolgt, zeigt, daß die Depression der Temperatur für das Einsetzen der Kältestarre nicht durch einen Schockeffekt hervorgerufen wird. 4. Die Geschwindigkeit, mit welcher eine Erholung aus der Kältestarre stattfindet, weist darauf hin, daß Blattella sich an verschiedene Temperaturen akklimatisieren kann. 5. Die Reaktivierung von Blattella aus der Kältestarre wird bei niedrigen Temperaturen über dem Gefrierpunkt durch die Akklimatisierung beeinflußt. Nach einer Akklimatisierungs-Temperatur von 15° C überleben mehr Schaben als nach einer solchen von 25° C oder 35° C. Alle Schaben, die an eine Temperatur von 15° C akklimatisiert waren, starben schließlich bei 7° C, obwohl sie gegen Kälteeinwirkung resistenter waren als schaben, die an eine Temperatur von 25° C oder 35° C akklimatisiert waren. 6. Wie in der Diskussion der Ergebnisse ausgeführt wird, ist es unwahrscheinlich, daß ein Senken der für das Eintreten der Kältestarre notwendigen Temperatur um 2.6° C für freilebende Blattella bedeutungsvoll ist.
    Notes: Abstract Evidence is given that insects acclimatized to colder temperatures are more resistant to immobilization by cold. There is a temperature below which further acclimatization is not achieved. Data are presented for the rate of gain and loss of cold tolerance. This is further evidence of acclimatization. The rate of recovery after immobilization by cold is related to the acclimatization temperatures. The rate of survival at low temperatures above freezing is dependent upon the acclimatization temperature.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 181 (1958), S. 490-490 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1. EFFECT OF OSMOTIC PRESSURE ON AMOUNTS OF ACETYLCHOLINE IN SUPERNATANT AND RESIDUES OF HOMOGENATES OF COCKROACH THORACIC CORD Extraction molar-ity with medium homogenization (17 sec.) Acetylcholine Total G"gm.) (15 cords) Supernatant (/*gm.) Residue (//gin.) Supernatant (per cent) ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 182 (1958), S. 1378-1378 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A further step in the evaluation of the role of acetylcholine has now been taken by determining the distri-bution of choline acetylase in conductive tissue of the cockroach. This work was carried out with homo-genates of tissues, as more purified enzyme preparations required impractical amounts of ...
    Type of Medium: Electronic Resource
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