Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2000-2004
  • 1975-1979
  • 1970-1974  (5)
  • 1974  (5)
Material
Years
  • 2000-2004
  • 1975-1979
  • 1970-1974  (5)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mycopathologia 54 (1974), S. 549-558 
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The acrylamide gel electrophoretic patterns of esterases and phosphatases are not helpful in the identification ofVerticillium dahliae andV. albo-atrum. Protein profiles of wild-type isolates of the two species show bands characteristic to each species. For the genus, nine characteristic bands were detected; these remained in natural variants, but in ultraviolet variants only six of them persisted. Of the three bands characteristic ofV. dahliae, only one persisted in natural and in ultraviolet variants.V. albo-atrum showed two characteristic bands. Immunoelectrophoretic analysis reveals the existence of greater intra-specific affinities than at the inter-specific level. Variants from one isolate have immunoelectrophoretic constituents similar to those of the parent and can be identified employing these criteria. Both acrylamide gel electrophoresis and immunoserology, however, affirm the close genetic relationship of the two form-species.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 6 (1974), S. 237-245 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les mesures du flux sanguin cérébral régional au repos et après technique d'activation furent associées à la sério-angiographie cérébrale chez des malades présentant une hémorragie méningée due à une rupture anévrysmale. Une telle étude était utile dans le choix et l'évaluation de l'efficacité du traitement des facteurs d'aggravation tels que les spasmes cérébraux, l'oedème cérébral, l'hydrocéphalie aigüe et chronique et l'hématome intracébr'ebral. Les valeurs du flux sanguin cérébral régional trouvées furent plus faibles chez des malades après hémorragie méningée, en rapport tant avec l'état neurologique qu'avec les facteurs aggravants mentionnés ci-dessus. Lorsque le spasme vasculaire était levé par la Phénoxybenzamine, le flux sanguin cérébral régional était constant bien que le volume sanguin cérébral régional augmentait, suggérant que d'autres facteurs peuvent être plus importants pour la réduction du flux sanguin céréphalie communiquante. Lorsqu'on traitait l'oedème cérébral et l'hydrocéphalie aigüe soit par Glycerol intra-veineux, soit par drainage lombaire du liquide céphalorachidien, le flux sanguin cérébral régional augmentait.
    Abstract: Zusammenfassung Ausführliche Untersuchungen des CBF in Kombination mit der Serien-Angiographie bei Patienten mit einer Subarachnoideal-Blutung. Dabei sollten die Komplikationsfaktoren, wie Gefäßspasmus, Hirnödem, akuter und chronischer Hydrocephalus, intracerebrales Haematom, bestimmt werden. Der regionale Hirndurchflußwert war bei allen Patienten nach einer Subarachnoideal-Blutung reduziert. Dabei konnte nachgewiesen werden, daß das Hirnödem und der Hydrocephalus eine besondere Bedeutung für die Reduktion des CBF haben. Nach der Behandlung dieser Komplikationen kam es zu einem Anstieg der Hirndurchblutung.
    Notes: Summary Regional cerebral blood flow (rCBF) measurements in the steady state and after activation techniques were combined with serial cerebral arteriography in patients with subarachnoid hemorrhage (SAH) due to ruptured aneurysm. Such information was useful in selecting and evaluating the effectiveness of treatment for complicating factors such as cerebral vasospasm, cerebral edema, acute and chronic hydrocephalus and intracerebral hematoma. Regional cerebral blood flow values were found to be reduced in patients after SAH and correlated well with the neurological status and the complicating factors listed above. When vasospasm was relieved by phenoxybenzamine (PBZ), rCBF did not increase although regional cerebral blood volume did, suggesting that other factors may be more important for the reduction of rCBF such as cerebral edema and communicating hydrocephalus. When cerebral edema and acute hydrocephalus were treated by either intravenous glycerol or lumbar cerebrospinal fluid drainage, RCBF increased.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Infection of monkey kidney cells by Coxsackievirus A 9 labelled with3H-uridine was studied. The penetration process and subsequent localization of viral RNA was examined by electron microscopic autoradiography: Single virions were pinocytozed and aggregated to groups within membrane bound vesicles. The virions were then rearranged to large crystals within these vesicles. At 3 hours after infection most of the crystal-containing vesicles displayed acid phosphatase activity and are therefore considered to be lysosomes. At this time no progeny virus was detected in the cells. Later in the replicative cycle radioactivity was found in the paranuclear, vacuolated region of cytopathic cells and to a small extent in progeny virus.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1435-1803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An 10 Hunden wurden die linksventrikuläre Hämodynamik, Koronardurchblutung und der Sauerstoffverbrauch des Herzens während intraaortaler Ballonpulsation (IABP) untersucht. Beim suffizienten Herzen (10 Hunde) führte 10 min IABP zu einem signifikanten Abfall des mittleren systolischen Druckes im linken Ventrikel von 13% (p〈0,001), von dp/dtmax um 5% (NS) und des „tension time index” um 15% (p〈0,001), während Schlagvolumen und mittlerer arterieller Druck unverändert blieben. Die Koronardurchblutung wurde parallel zum arteriellen Druck verändert: Während der systolische Fluß im Ramus circumflexus der linken Kranzarterie abfiel und der diastolische Fluß anstieg, blieb die mittlere Koronardurchblutung unverändert. Als Folge der systolischen Druckentlastung des linken Ventrikels fiel der myokardiale Sauerstoffverbrauch um 8%. Ein Schockzustand mit erniedrigtem arteriellem Blutdruck, Herzminutenvolumen und Koronardurchblutung wurde durch Serienligatur von Koronararterienästen herbeigeführt. Im Gegensatz zum normotonen Kreislaufzustand führte 30 min IABP beim kardiogenen Schock zu einem Anstieg des mittleren systolischen Druckes im linken Ventrikel von 19%, des mittleren arteriellen Druckes von 31% (p〈0,05) und der mittleren Koronardurchblutung von 37% (p〈0,02). Dabei stieg der myokardiale Sauerstoffverbrauch um 15% (NS). Die unterschiedlichen Auswirkungen der IABP auf die Hämodynamik und Koronardurchblutung des linken Ventrikels lassen sich erklären aufgrund der Reaktion der Barorezeptoren, der Veränderungen der Pulsform während IABP in verschiedenen Druckbereichen.
    Notes: Summary Circulatory hemodynamics, coronary blood flow and myocardial oxygen consumption were studied in 10 open chest dogs in chloralose-urethan anesthesia during intraaortic balloon-pulsation (IABP). In the normal heart (10 dogs) 10 min IABP resulted in a significant decrease of left ventricular mean systolic pressure for 13% (p〈0.001) of dp/dtmax for 5% (NS) and of tension time index for 15% (p〈0.001), whereas stroke volume and mean arterial pressure were unchanged. Coronary blood flow followed the alterations of arterial pressure with a decline of systolic and an increase of diastolic left circumflex coronary flow in the presence of unaltered mean coronary blood flow during diastolic augmentation. Myocardial oxygen consumption was reduced for 8% on the average as an effect of the unloading of the left ventricle by IABP. Cardiogenic shock with hypotension, low stroke volume, cardiac output and coronary blood flow was simulated by serial ligation of coronary arteries. In contrast to the normotensive circulatory state IABP effected in this shock state an increase of left ventricular mean systolic pressure for 19%, mean arterial pressure for 31% (p〈0.05) and mean left circumflex coronary blood flow for 37% (p〈0.02) after 30 min. Myocardial oxygen consumption increased modestly for 15% (NS) after 10 min IABP compared to the shock state. The different results in the sufficient and insufficient heart can be explained by the response of the baroreceptors in various pressure ranges to the phaseshift of the arterial pulse.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 14 (1974), S. 706-716 
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: This is a study of materials which are positive-temperature-coefficient resistors. Such materials, composed of conductive particles dispersed in a crystalline polymeric matrix, have been found to be of limited stability. An example is carbon black in high-density polyethylene. On repeated cycling through the anomaly temperature or on extensive heating at or above the anomaly temperature, the room temperature resistivity rises and the anomaly height falls to zero. This phenomenon has been shown to be caused by the absorption of oxygen by the polymer matrix which alters the structure, reduces the crystallinity, and induces an unusual form of crosslinking of a reversible nature.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...