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  • 1
    ISSN: 0304-4165
    Keywords: Agglutinability ; Concanavalin A ; Dextran gel sphere ; Glycogen complex
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physics Letters A 24 (1967), S. 411-412 
    ISSN: 0375-9601
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
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  • 3
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The duration of the effect of a water-soluble and an oil-menstrum preparation of heparin was examined on rabbits. The oil-soluble preparation delayed, using equal dosage, the coagulation of the blood about three times longer. 1000 I.U./kg appeared to be the most economical dosage. In rabbits the effect of heparin lasted for approximately 20 hours.
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cryobiology 11 (1974), S. 278-284 
    ISSN: 0011-2240
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Cryobiology 8 (1971), S. 390-391 
    ISSN: 0011-2240
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
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  • 6
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report the results of electron paramagnetic resonance experiments on managanese dissolved in MoGa 4 over the temperature range 293-1.8 K. It is found that both theg shift and the line width show an anomalous sharp concentration independent increase as the temperature is decreased from 100 to 4.2 K. The experimental results for the relaxation rate andg shift are analyzed in terms of currently available theories and found to be unexplained by them. A model is proposed for the alloys invoking a bottleneck effect at high temperatures which breaks down at low temperatures due to the onset of a Kondo effect. When the bottleneck effect is broken down it is suggested that the theories for the unbottlenecked regime again become applicable.
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  • 8
    ISSN: 1741-0444
    Keywords: Mechanical properties of muscle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Nous avons mesuré les propriétés mécaniques du muscle du diaphragme du chien. Une portion du diaphragme fut isolée et façonnée en forme de poche avant d'être reliée à divers circuits hydrauliques. Nous avons mesuré la réponse à la pression créée par stimulation électrique à divers voltages, fréquences et pressions de base ainsi qu'à la durée de contraction. De plus, nous avons obtenu les courbes de pression-volume et avons estimé le rendement d'énergie du muscle en contraction active. Nous concluons d'après ces résultats que les propriétés du muscle du diaphragme n'éliminent pas son usage en tant que substituant du myocarde.
    Abstract: Zusammenfassung Die mechanischen Eigenschaften von Zwerchfellmuskeln von Hunden wurden gemessen. Ein Teil des Zwerchfells wurde isoliert und zu einer Tasche geformt, die wiederum an verschiedene hydraulische Kreisläufe angeschlossen wurde. Wir maßen die Druckreaktion auf elektrische Stimulation durch verschiedene Spannungen, Frequenzen und Meßbasisdrücke, ferner die Kontraktionszeit. Wir erhielten ferner Druck-Volumen-Kurven und schätzten die abgegebene Leistung des aktiv kontrahierenden Muskels. Wir schlossen aus den Ergebnissen, daß die Eigenschaften des Zwerchfellmuskels seinen Gebrauch als Ersatz für den Herzmuskel nicht ausschließen.
    Notes: Abstract The mechanical properties of diaphragm muscle in dogs were measured. A portion of the diaphragm was isolated and formed into a pouch which in turn was connected to various hydraulic circuits. We measured pressure response to electrical stimulation for various voltages, frequencies and baseline pressures; and also contraction time. Further, we obtained pressure-volume curves and estimated the power output of the actively contracting muscle. From the results we conclude that the properties of the diaphragm muscle do not exclude its use as a myocardial substitute.
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  • 9
    ISSN: 1741-0444
    Keywords: Blood oxygenation ; Augmentation of gas transfer ; Secondary flow ; Helical coil ; Mixing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Le passage de l’oxygène dans le sang et dans l’eau fut étudié de façon expérimentale pour un débit constant dans une ‘spirale complexe’, tube en caoutchouc de silicone constitué d’une série de sections hélicoìdales à orientation alternée. La série de réorientations provoquait le rétablissement continu du flux secondaire induit par le mouvement hélicoìdal, de manière à accroître le mélange du liquide. Des spirales complexes de diverses configurations furent soumises à des essais dans une atmosphère d’oxygène et une amélioration significative du passage de l’oxygène dans les liquides fut mesurée alors que la chute de pression s’intensifiait modérément. Le cas d’un transfert idéal d’oxygène—par example dans un liquide parfaitement mélangé—fut traité de façon théorique et une comparaison de ces résultats avec les données expérimentales a demontré à quel point la résistance latérale du liquide était réduite par le système de spirales complexes.
    Abstract: Zusammenfassung Sauerstoffübertragung an Blut und Wasser wurde experimentell für stetige Strömung in einer ‘komplexen Spule’ untersucht, einem Silikonkautschukrohr, das in eine Folge von Wendelspulen alternativer Orientierung geformt wurde. Die Reihe von Wieder-Orientierungen verursachte die fortgesetzte Wiederherstellung des von der Spiralbewegung induzierten Sekundärstromes, so daß die Mischung der Flüssigkeit gefördert wurde. Komplexe Spulen verschiedener Konfiguration wurden in einer Sauerstoffatmophäre geprüft und es wurde eine beträchtliche Verbesserung der Sauerstoffübertragung an die Flüssigkeiten gemessen, während der Druckanfall ein wenig anstieg. Der Fall der idealen Sauerstoffübertragung-d.h. an eine vollkommen gemischte Flüssigkeit- wurde theoretisch behandelt und ein Vergleich dieser Resultate mit den experimentellen Daten zeigte, um wieviel der Widerstand von Seiten der Flüssigkeit durch komplexe Spulung verringert wurde.
    Notes: Abstract Oxygen transfer to blood and water was investigated experimentally for steady flow in a ‘complex coil’, a silicone-rubber tube formed into a sequence of helical coil sections of alternating orientation. The series of reorientations caused the secondary flow induced by the helical motion to be continually re-established, so that mixing of the liquid was enhanced. Complex coils of various configurations were tested in an oxygen atmosphere and a significant improvement of the oxygen-transfer to the liquids was measured while the pressure drop increased moderately. The case of ideal oxygen transfer, i.e. a perfectly mixed fluid, was treated theoretically and a comparison of these results with the experimental data demonstrated how much the fluid-side resistance was reduced by complex coiling.
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  • 10
    ISSN: 1741-0444
    Keywords: Diaphragm ; Elasticity ; Modulus ; Muscle ; Passive
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A measuring system used to monitor the orthogonal stresses and strains in the plane of the passive canine diaphragm musclein vivo is described. The system consists of four topically applied force-displacement transducers, a laser-camera subsystem to determine the local radii of curvature and an abdominally situated pressure transducer. Experimental results show that the passive musclein situ behaves as an anisotropic linearly elastic material for loads in the physiological range. A model is proposed which describes the diaphragm's response to load in terms of two moduli. Values obtained experimentally for the moduli are discussed.
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