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  • 2015-2019  (7)
  • 2005-2009  (41)
  • 1975-1979  (26)
  • 1930-1934  (6)
  • 1925-1929  (5)
  • 1910-1914  (3)
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Keywords
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Polarisationserscheinungen bei der stufenweisen Anregung der Fluoreszenz von Quecksilberdampf (1929)
    Springer
    The European physical journal 54 (1929), S. 811-818 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Die Fluoreszenz des Quecksilberdampfes bei polarisierter stufenweiser Anregung mit den Linien 2537 und 4047 unter Stickstoffzusatz wird untersucht und die dabei auftretenden Polarisationseffekte und Intensitätsversehiebungen der Fluoreszenzlinien 5461, 4358 und 4047 werden beschrieben und erklärt. Einige wichtige Folgerungen und weitere Untersuchungsmöglichkeiten werden diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01341742
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  • 2
    Electronic Resource
    Electronic Resource
    Temperaturmessungen im Wechselstrom-Kohlelichtbogen (1933)
    Springer
    The European physical journal 81 (1933), S. 539-542 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Die Methode von Frl. Kohn, mit Hilfe der Spektrallinienuinkehr die Temperatur eines Gasvolumens zu bestimmen, wird auf den Lichtbogen angewandt und es wird mit ihr die Temperatur des Wechselstromlichtbogens im Spannungs-Nulldurchgang gemessen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01342300
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of Carbon and Nitrogen Implantation on the Properties of Silicon Nitrides (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 290 (July 2005), p. 160-166 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This study focused on the effect of ion implantation on the mechanical properties ofsilicon nitride based ceramics. The examined materials contained 4% Al2O3, 6% Y2O3 and, in some cases, graphite or black carbon additives. Fully densified bodies were manufactured by two-step hot isostatic pressing, in other experiments pressureless sintering gave porous ceramics. Nitrogen or carbon ions with 190 keV or 350 keV were implanted, a part of samples obtained laser treatments for comparison. Measurements of elastic modulus, four point and three point bending strength were carried out at room temperature on sintered samples, partially sintered samples and sintered and oxidised samples. Carbon or nitrogen implantation influenced the strength of partially sintered samples only if the density was over 80%. Both the implantation of carbon or nitrogen ions and the laser treatment affected the bend strength of sintered samples, enlarging the power introduced itsvalue first increased than decreased. Implantation slightly decreased the strength of samples oxidised at 1400 °C. Comparison of different mechanical characteristics may support a better understanding of phenomena during ion beam implantation or laser irradiation
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.290.160.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Induction of drug metabolism in man after rifampicin treatment measured by increased hexobarbital and tolbutamide clearance (1975)
    Springer
    European journal of clinical pharmacology 9 (1975), S. 219-227 
    Details
    ISSN: 1432-1041
    Keywords: Rifampicin ; induction of drug metabolism ; hexobarbital kinetics ; tolbutamide kinetics ; plasma concentrations ; man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Five healthy volunteers took 1.2 g rifampicin daily for 8 days, and before and afterwards each received hexobarbital (7.32 mg/kg) and tolbutamide (20 mg/kg) by i.v. infusion on two consecutive days. The plasma concentrations of the two drugs were determined during and after infusion. The average elimination half-life of hexobarbital had decreased from 325 to 122 min and of tolbutamide from 418 to 183 min following rifampicin treatment. It was calculated that the metabolic clearance of hexobarbital had increased about three-fold and that of tolbutamide more than two-fold. Significant changes in the distribution kinetics of the two drugs were not observed. The results suggest that rifampicin is capable of inducing drug metabolism in man, which leads to an increased rate of elimination of drugs that undergo biotransformation in the liver.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614021
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  • 5
    Electronic Resource
    Electronic Resource
    Stimulation of drug metabolism by rifampicin in patients with cirrhosis or cholestasis measured by increased hexobarbital and tolbutamide clearance (1977)
    Springer
    European journal of clinical pharmacology 11 (1977), S. 287-293 
    Details
    ISSN: 1432-1041
    Keywords: Rifampicin ; induction of drug metabolism ; cirrhosis ; cholestasis ; hexobarbital kinetics ; tolbutamide kinetics ; plasma concentrations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Eleven patients with hepatic cirrhosis or cholestasis were treated with rifampicin for 7 to 132 days. Ten patients received hexobarbital (7.32 mg/kg) and five received tolbutamide (20 mg/kg) by i.v. infusion prior to and after rifampicin treatment; plasma concentrations of the two test compounds were determined during and after infusion. The average elimination half-life of hexobarbital had decreased from 624 to 262 min and that of tolbutamide from 292 to 160 min following rifampicin treatment. It was calculated that the metabolic clearance of hexobarbital had increased more than two-fold and that of tolbutamide almost two-fold. The results suggest that rifampicin is able to stimulate hepatic drug metabolism in patients with liver disease. It was apparent in general that the induction did not lead to improvement of hepatocellular function during disease as judged by laboratory findings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00607679
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  • 6
    Electronic Resource
    Electronic Resource
    Pharmacokinetics of hexobarbital in man after intravenous infusion (1975)
    Springer
    Journal of pharmacokinetics and pharmacodynamics 3 (1975), S. 1-11 
    Details
    ISSN: 1573-8744
    Keywords: hexobarbital pharmacokinetics ; intravenous infusion ; healthy volunteers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The plasma levels of hexobarbital in humans were determined during and after a 30-min or 60-min zero-order intravenous infusion. Hexobarbital kinetics could be described by conceiving the body to exhibit two compartments. The plasma concentrations were fitted to the postinfusion equation and the parameters intrinsic to the two- compartment open model were estimated. The elimination half-life varied considerably among the 14 individuals (160–441 min), which could mainly be explained by the greatly varying metabolic clearance of the compound (123–360 ml /min). The apparent volume of distribution per kilogram of body weight was relatively constant (1.10±0.12 liters/kg).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01066591
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  • 7
    Electronic Resource
    Electronic Resource
    Elektronenmikroskopische Beobachtungen über die Wanderung der Emissionssubstanz auf Oxydkathoden (1933)
    Springer
    The European physical journal 86 (1933), S. 697-709 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Zusammenfassung Es werden Versuche zur Deutung der „Bildumkehr“ elektronenoptischer Emissionsbilder durchgeführt. Dabei ist unter „Bildumkehr“ zu verstehen, daß auf Oxydkathoden, in deren Belag ein Strichsystem geritzt ist, einmal die oxydbedeckte Fläche und nach der „Umkehr“ das Strichsystem stärker emittiert. 1. Die „Bildumkehr“ ist sowohl im elektrischen als auch im magnetischen Elektronenmikroskop nachweisbar. 2. Die „Bildumkehr“ wird nicht durch Verzerrungen des elektrischen Feldes an der Oberfläche einer unebenen Kathode bedingt, sondern ist, wie an einer ebenen Kathode gezeigt werden kann, durch Emissionsänderungen auf der Kathode selbst verursacht. 3. Als Ursache für die „Bildumkehr“ wird die Überdampfung der Emissionssubstanz in das Strichsystem hinein gefunden. Die Wanderung von Bariummetall wird an mehreren Kathoden gezeigt. 4. Die gewonnenen Anschauungen über die „Bildumkehr“ werden dadurch bestätigt, daß sich durch geeignete Wahl der Versuchsbedingungen die Umkehr der Emission willkürlich leiten läßt. 5. Die beobachteten Erscheinungen und die gegebene Deutung stehen mit den neueren Anschauungen über die Bedeutung des metallischen Bariums für die Emission der Oxydkathoden im Einklang. Damit ist eine weitere Stütze dieser Auffassung mit Hilfe des Elektronenmikroskops gefunden worden.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01337873
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  • 8
    Electronic Resource
    Electronic Resource
    Elektronenmikroskopische Beobachtungen über die Wanderung der Emissionssubstanz auf Oxydkathoden (1934)
    Springer
    The European physical journal 87 (1934), S. 686-686 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01333335
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  • 9
    Electronic Resource
    Electronic Resource
    Zum Nachweise der Perborsäure und einiger ähnlicher Verbindungen (1911)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 50 (1911), S. 537-544 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01359306
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  • 10
    Electronic Resource
    Electronic Resource
    Die Rhodanometrie von Fetten und Fettgemischen (1927)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 70 (1927), S. 77-84 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01362524
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