Bibliothek

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Light-intensity dependence in photocatalytic decomposition of water over K4Nb6O17 catalyst (1994)
    Springer
    Catalysis letters 28 (1994), S. 417-422 
    Details
    ISSN: 1572-879X
    Schlagwort(e): photocatalysis ; water decomposition ; light-intensity dependence ; K4Nb6O17
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract We have measured, for the first time, the light-intensity dependence in photocatalytic decomposition of water over K4Nb6O17 In higher light-intensity region, the rate of reaction is proportional to the square root of the light intensity. In lower light-intensity region, on the contrary, the rate is almost linearly proportional to the light intensity. We propose a reaction model whose main path of the reaction loss is the recombination of the charges generated under b and -gap radiation. This model describes the light-intensity dependence of this reaction well.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00806072
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    The “turn-over” technique for selective cerebral angiography (1994)
    Springer
    Neuroradiology 36 (1994), S. 123-124 
    Details
    ISSN: 1432-1920
    Schlagwort(e): Cerebral angiography ; Transfermoral route ; Conventional technique ; Turn-over technique
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract In older patients with severe aortic atherosclerosis or pronounced tortuosity of the brachiocephalic vessels, selective catheterisation may be impossible. In order to overcome this difficulty we introduced a new “turn-over” technique. This involves introduction of a long guidewire through the catheter, advancing it and turning it over just above the aortic valves and finally introducing it into each major vessel, followed by the catheter. Selective catheterisation was completely achieved with the turn-over technique in 13 patients. Turning over the catheter just above the aortic valves and introducing it into the vessels was very easy.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00588076
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Establishment of a long-surviving murine model of myocardial infarction: Qualitative and quantitative conventional microscopic findings during pathological evolution (1999)
    Springer
    Basic research in cardiology 94 (1999), S. 78-84 
    Details
    ISSN: 1435-1803
    Schlagwort(e): Key words Ischemia – pathology – coronary artery disease – rodent
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Ongoing basic molecular analyses are being performed in mice, and a simple long-surviving murine model of myocardial infarction (MI) would be very useful in this regard. Although a few studies have included MI in mice by coronary artery ligation, the induction involves a complex technique and has a relatively high mortality rate. In addition, the identification of the basic pathological sequence is essential to the interpretation of experimental results. We developed a simple technique for the induction of MI in mice and examined qualitative and quantitative conventional microscopic findings during the pathological evolution over a 28-day observation period. Male BALB/c mice weighing approximately 25 – 30 g were anesthetized and then ventilated with a positive pressure ventilator. The heart was exposed by thoracotomy. Left coronary artery occlusion was performed by thermocoagulation using a thermocoagulation knife at the level of the tip of the left atrium. After establishing this surgical method, we used it to induce MI in 71 mice. The operative and postoperative mortality rates of this model were 5.6 % (4/71) and 12.6 % (9/71), respectively. In 3 (5.2%) of the 58 surviving mice, the area of infarct was not sufficient. The infarct area in the remaining 55 mice was 40 ± 9 % of the entire perimeter of the left ventricle. Conventional microscopic examinations with hematoxylin-eosin and Masson-trichrome staining disclosed that all of the characteristic histopathological features of MI occurred 1 – 2 days earlier than those in rats. Our surgical technique provides a sufficient infarct area, with an acceptable mortality rate. The present study clarified the histopathological sequence in this long surviving murine MI model.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s003950050129
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...