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  • 1
    ISSN: 1432-2013
    Keywords: Coronary Sinus Blood Flow ; Thermodilution Technique ; Mixing of Indicator and Blood
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In hydraulic non-occlusive models, mixing effects were studied with slug-injection and constant-infusion techniques. Measurements were accomplished by means of catheters specially constructed with thermistors. Constant-rate infusion of 5 ml/min of saline at room temperature showed homogeneity of mixing. Good correlation (r=0.936) was found between metered flow ranging from 50–450 ml/min and reciprocal temperature changes. In anesthetized open chest dogs reciprocal temperature changes during constant-infusion thermodilution was compared with coronary sinus flow metered by graduated cylinder and stop-watch. For this purpose all the coronary sinus blood was directed through a tubing system with a Y-connector into the jugular vein. In the range of 50–450 ml/min the metered coronary sinus blood flow and the reciprocal of the observed changes in temperature showed a linear correlation (r=0.949). The reproducibility of the thermodilution method is fairly good. Therefore it is believed that this technique will allow accurate measurement of coronary sinus blood flow.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 349 (1974), S. 159-169 
    ISSN: 1432-2013
    Keywords: Coronary Blood Flow ; 133 Xenon Wash-Out Technique ; Electromagnetic Coronary Sinus Outflow Measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In intact anesthetized dogs left coronary artery blood flow determined by the 133 xenon wash-out technique was compared with coronary sinus outflow measured by a transvenously introduced cannulating electromagnetic flowprobe. 133 xenon was injected selectively into the left coronary artery and its myocardial wash-out detected by a precordial scintilltion counter. Coronary flow was determined over a wide range while increases of flow were produced by the administration of different drugs such as catecholamines, alpha-stimulators, coronary vasodilators and by volume loading. Below a coronary sinus outflow of less than 100 ml/min, coronary flow estimated by the 133 xenon technique and corrected for the amount of perfused muscle mass was similar to the electromagnetically measured coronary sinus outflow. At a coronary sinus outflow above 100 ml/min, however, a progressive underestimation of 133 xenon flow was observed regardless whether flow was increased by primary coronary vasodilation or essentially by an increase of myocardial oxygen consumption with coronary venous oxygen saturations between 20 and 40%. Thus, the application of the 133 xenon method for quantitation of coronary blood flow appears to be limited to low flow rates, whereas under conditions of increased flow the 133 xenon technique provides at best semiquantitative measurements of coronary blood flow.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orofacial orthopedics 35 (1974), S. 444-451 
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In this article the part played by orthodontics in the undergraduate curriculum, in educating orthodontic specialists or in continuing education courses has been described. The number and distribution of orthodontists throughout the United States indicate the availability of orthodontic care. The possibilities for foreign trained dentists to undergo further education in orthodontics has been briefly discussed.
    Abstract: Résumé Nous décrivons comment l'orthodontie fait partie intégrale des études médico-dentaires et de la formation supplémentaire du spécialiste et comment elle sert de thème à différents cours de perfectionnement. Nous mentionnons aussi quel est le nombre et comment s'établit la répartition de spécialistes en orthodontie aux Etats Unis par rapport à la population. Nous indiquons enfin les possibilités pour un médecin-dentiste étranger, de se spécialiser en orthodontie aux Etats Unis.
    Notes: Zusammenfassung Die Kieferorthopädie wurde als Lehrfach im zahnärztlichen Grundstudium, als zusätzliche Ausbildung für Spezialisten und als Thema verschiedenster Fortbildungskurse beschrieben. Die Zahl und Verteilung von kieferorthopädischen Spezialisten in den Vereinigten Staaten gibt Aufschluß über die kieferorthopädische Versorgung der Bevölkerung. Die Möglichkeiten für ausländische Zahnärzte, sich in den Vereinigten Staaten zusätzlich in Orthodontie auszubilden, wurde kurz diskutiert.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orofacial orthopedics 33 (1972), S. 213-220 
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary One of the major objectives to prevent relapse after class II division 2 treatment is to obtain a frontal support of the anterior teeth at an interincisal angle of 130 to 140 degrees. In this paper, three cases which were subjected to three different treatment procedures (removable plate and lingual arch/activator/fixed appliances) were selected for a cephalometric evaluation to demonstrate that the choice of appliance is mainly dependent on the age of the patient respectively on the developmental stage of his dentition.
    Notes: Zusammenfassung Das Fehlen eines Rezidivs bei behandelten Deckbißfällen hängt weitgehend von der erreichten Frontzahnstellung ab. Frontale Abstützung und ein Interincisalwinkel von 130 bis 140 Grad sind wesentliche Voraussetzungen für ein stabiles Resultat. An drei mit verschiedenen Apparaturen behandelten Fällen (Platte und Lingualbogen/Monobloc/festsitzende Apparatur) wird an Hand von Fernröntgenbildern gezeigt, daß die Wahl des Behandlungsmittels weitgehend vom Alter des Patienten, bzw. vom Stand seines Zahndurchbruchs bestimmt wird.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 46 (1849), S. 292-296 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 19 (1886), S. 2785-2791 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 49 (1916), S. 2522-2529 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 49 (1916), S. 1978-1994 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 50 (1917), S. 1024-1035 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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