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  • Articles: DFG German National Licenses  (12)
  • 1970-1974
  • 1965-1969  (12)
  • 1966  (12)
Source
  • Articles: DFG German National Licenses  (12)
Material
Years
  • 1970-1974
  • 1965-1969  (12)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 53 (1966), S. 537-537 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 316 (1966), S. 677-680 
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 192 (1966), S. 423-438 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level structure of Ge74 has been investigated at the Karlsruhe research reactor using thermal neutron capture in Ge73. Neutrons were monochromized by Bragg reflection from a lead single crystal. The target was Ge73 enriched to 86.1%. Precision measurements of the capture gamma-ray spectrum have been performed over the whole energy range by means of a 4 cm2×0.5 cm lithium-drifted germanium detector. 148 gamma transitions have been observed. Considerable aid in analysis of the level structure is provided by double and triple coincidence measurements with 4″ ∅ × 5″ NaI(Tl) detectors. Data were processed using the Karlsruhe Multiple Input Data Acquisition System (MIDAS). A level scheme of Ge74 is proposed involving 38 excited states in the energy range from 0 to 4400 keV. The neutron binding energy of Ge74 is determined to be 10202±10 keV.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 194 (1966), S. 373-394 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The level structure of Sr88has been investigated at the Karlsruhe research reactor FR2 using thermal neutron capture in Sr87. A pure thermal neutron beam was obtained by Bragg reflection from a lead single crystal. The target was natural strontium which gives a cross section contribution of about 87% for the reaction Sr87(n,γ) Sr88. High resolution measurements of the capture gamma ray spectrum have been performed by means of a 4 cm2 × 0.5 cm lithium-drifted germanium diode. 146 gamma lines have been observed. Cascade relationships were studied by a double and triple coincidence apparatus containing 4″Ø × 5″ NaI(Tl) crystals and XP-1040 photomultipliers. In several cases coincident background was subtracted utilizing the doublewindow technique. By application of the triple sum coincidence method capture gammas from isotopes other than the investigated Sr88 nucleus could be eliminated. Several new levels were established. A transition scheme is proposed and discussed. The neutron binding energy of Sr88 is determined to be 11111±4 keV.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Archive for mathematical logic 9 (1966), S. 70-94 
    ISSN: 1432-0665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 44 (1966), S. 625-628 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The clearance of Inulin and Chloriodopropylinulin-131J was investigated in dogs in comparative tests; both substances showed the same results. It was also possible to ascertain that the clearance of labelled inulin* in the dog could be calculated from the Inulin*-administration and plasma concentration. This, however, is only possible if the Inulin spaces are filled so that a flow equilibrium exists and if radiochemically pure Inulin* is used.
    Notes: Zusammenfassung An Hunden wurde vergleichend die Clearance von Inulin und Chlorjodpropylinulin-131J untersucht; beide Substanzen führten zu gleichen Resultaten. Außerdem ließ sich nachweisen, daß die Clearance von markiertem Inulin* beim Hund aus Eingabe und Plasmakonzentration berechnet werden kann. Das ist jedoch nur möglich, wenn die Inulinräume gefüllt sind, so daß ein Fließgleichgewicht besteht und wenn radiochemisch reines Inulin* zur Anwendung gelangt.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 44 (1966), S. 618-621 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary 1. Whole blood clots derived from the same subject at the same moment were exposed in serum to several fibrinolytic substances. By plasminogen activation with streptokinase and by direct addition of plasmin in dependence of the clot's composition a lysis is apparent only in those parts which show great masses of erythrocytes with scanty fibrin stage. Parts of the thrombus with compact fibrin masses, strong retraction and great masses of leucocytes are resistent to lysis. By Trypsin and Aspergillin O a complete thrombolysis is achieved under identical conditions from the surface down and independent from the structure of the thrombus. 2. 72 hours old whole blood clots show the same result of lysis with streptokinase and Aspergillin O as fresh clots. 3. Clots of citrated plasma produced from a subject's blood 4 hours after an i.v. streptokinase therapy show no lysis in vitro under the influence of streptokinase, while under the influence of Aspergillin O a lysis from the surface down of the clot is to be seen.
    Notes: Zusammenfassung 1. Zum gleichen Zeitpunkt von der gleichen Versuchsperson hergestellte Nativblutgerinnsel werden in Serum verschiedenen fibrinolytisch wirksamen Substanzen ausgesetzt. Bei Plasminogenaktivierung mit Streptokinase und bei direkter Plasminzugabe kommt es in Abhängigkeit vom Aufbau der Gerinnungsthromben zu einer Teillyse der erythrocytenreichen Partien mit Einlagerung spärlicher Fibrinfasern, während die Partien mit dichten Fibrinmassen und starker Retraktion sowie Leukocyteneinlagerungen nicht in Lösung gehen. Unter Einwirkung von Trypsin und Aspergillin O kommt es zu einer schichtweisen, vom Aufbau des Thrombus unabhängigen völligen Auflösung der Thromben. 2. An 72 Std alten Vollblutgerinnseln tritt — wie an frischen Thromben — unter Streptokinaseeinwirkung ebenso eine Teillyse ein, während es unter Einwirkung von Aspergillin O zur völligen Lyse der Thromben kommt. 3. Citratplasmagerinnsel, hergestellt aus Patientenblut 4 Std nach i.v. Thrombolysetherapie mit Streptokinase, zeigen in vitro unter Streptokinaseeinwirkung keine Lyse, während es unter Aspergillin O von der Oberfläche her zur Lyse kommt.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 44 (1966), S. 621-625 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In completion to our examinations in human experimental whole blood clots intravitally in man formed clots in vitro are tested by activation of plasminogen by streptokinase and by administration of the direct proteolytic enzyme aspergillu O. By macroscopical and microscopical examination it is shown that by activation of plasminogen only a thrombus or parts of it are lysed, which show a composition of great masses of erythrocytes with scanty fibrin stage. A thrombus or parts of it with compact fibrin masses and great masses of leucocytes are resistent to lysis. By aspergillin O a complete thrombolysis is achieved under identical conditions and undependent from the structure of the thrombus.
    Notes: Zusammenfassung In Parallele zu den Untersuchungen an experimentellen Nativblutthromben werden intravital beim Menschen entstandene Thromben in vitro der Plasminogenaktivierung durch Streptokinase und der direkten Proteolyse durch Aspergillin O ausgesetzt. Wie die makroskopischen und mikroskopischen Untersuchungen zeigen, gehen bei Plasminogenaktivierung nur die Thromben bzw. Thrombusteile in Lösung, die aus Massen von Erythrocyten mit Einlagerung spärlicher Fibrinfasern bestehen, während Thromben bzw. Thrombusteile aus dichten Fibrinmassen mit Einlagerung großer Mengen von Leukocyten bzw. deren Abbauformen damit nicht aufzulösen sind. Mit Aspergillin O sind die Thromben unabhängig von ihrem Aufbau völlig aufzulösen.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 287 (1966), S. 311-325 
    ISSN: 1432-2013
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Membrane potentials of single Ranvier nodes of frog nerve fibres were measured by means of the “air-gap” technique. The node under investigation was continuously superfused. TEA (5 mM) has the following effects which are fully reversible: 1. The resting membrane is depolarized by about 5 mV; the spike potential (V S ), maximum rate of rise ( $$\dot V$$ A), and the rate of fall of the action potential are reduced. 2. The duration of the action potential of motor fibres of Rana esculenta is lengthened by a factor of more than 3; in sensory fibres of Rana esculenta and motor fibres of Xenopus laevis the factor is about 2. 3. The steady state relation between V S or $$\dot V$$ Aand the membrane potential is not affected. 4. Following a depolarizing pre-pulse of increasing duration, $$\dot V$$ Adecreases more slowly. Also, the rate of recovery of $$\dot V$$ Aduring the relative refractory period is decreased. 5. The delayed rectification of the membrane in low sodium solution is reduced and develops more slowly. 6. The membrane resistance increases in normal and potassium-rich Ringer's solutions. The amplitude of potassium-depolarization is reduced; no hysteresis of the current-voltage curve is observed in potassium-rich solutions. 7. It is concluded that the prolongation of the action potential is due to the reduced potassium permeability and to the decreased rate of inactivation of the sodium permeability.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 224 (1966), S. 84-93 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die elektrochemische Oxydation von Methanol und Formiat wird erfahrungsgemäß durch Legierungen besonders gut katalysiert. Zur systematischen Untersuchung dieser Effekte werden solche Metallgemische zunächst mit Hilfe der potentiostatischen Dreieckspannungs-Methode und dann als Brennstoffelektroden auf Kohlebasis getestet. Dabei zeigt es sich, daß für die Formiatverbrennung palladiumhaltige und für die des Methanols platinhaltige Legierungen besonders geeignet sind. Brennstoffbatterien auf Methanol/Luft-Basis mit derartigen Katalysatorelektroden werden bereits in der Praxis im. Dauerbetrieb eingesetzt. Schwierigkeiten, die bei extrem unterschiedlichen Arbeitstemperaturen auftreten können, lassen sich durch Verwendung von Methanol-Formiat-Gemischen weitgehend beheben. Als Katalysator, der für beide Komponenten solcher Gemische geeignet sein muß, hat sich Pd/Pt (4∶1) bewährt.
    Notes: Summary It is known that the electrochemical oxidation of methanol and formate is well catalysed by noble-metal alloys. For a systematic study of these effects different Pt and Pd alloys are investigated, (i) by use of the potentiostatic scanning method and (ii) by testing such alloys on active carbon as fuel-cell electrodes. It has been shown, that for the oxidation of formate Pd alloys are particularly suitable and for the oxidation of methanol Pt alloys. Methanol/air batteries using these types of catalysts are in field test for practical application. Difficulties arising from extreme temperature differences can be largely avoided by the use of methanol/formate fuel mixtures. A Pd/Pt catalyst (ratio 4∶1) has been approved for this fuel mixture.
    Type of Medium: Electronic Resource
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