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  • 1990-1994  (2)
  • 1970-1974  (4)
  • 1940-1944
  • 1992  (2)
  • 1970  (4)
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  • 1990-1994  (2)
  • 1970-1974  (4)
  • 1940-1944
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Role of cGMP and Ca2+ in Vertebrate Photoreceptor Excitation and Adaptation (1992)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 54 (1992), S. 153-176 
    Details
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.ph.54.030192.001101
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Influence of antihypertensive therapy on renal function (1992)
    Springer
    Journal of molecular medicine 70 (1992), S. S120 
    Details
    ISSN: 1432-1440
    Keywords: Hypertension ; Kidney ; Antihypertensive drugs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Antihypertensive therapy influences kidney function by different mechanisms depending on the mode of action of the drug used. The GFR is improved by calcium entry blockers and ACE inhibitors, unaffected by vasodilators, α-blockers and centrally acting sympatholytics and impaired by β-blockers. The same is true for renal blood flow and is due to changes of renal vascular resistance. Renal sodium excretion is impaired mostly by vasodilators, by α-blockers, sympatholytics and β-blockers; in contrast, calcium entry blockers and ACE inhibitors acutely induce natriuresis. The RAAS is stimulated by vasodilators, unaffected by α-blockers and sympatholytics and suppressed by β-blockers. Plasma catecholamines are stimulated by vasodilators and suppressed by centrally acting sympatholytics and unaffected by the others. Induction of acute renal functional impairment is reported for ACE inhibitors under conditions of compromised renal perfusion pressure such as in renal artery stenosis. These data from the literature reviewed are supported by our own experimental data on sodium balance under different drugs and micropuncture data in experimental renal artery stenosis. To achieve effective antihypertensive treatment with a low profile of side effects, careful monitoring of renal function seems to be mandatory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00207622
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Emissionsspektrometrische Analyse von Roheisen (1970)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 249 (1970), S. 100-105 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die spektrometrische Analyse von weiß erstarrtem Roheisen (auf C, Si, Mn, P, S, Cu) ist mit der gleichen Anregung und in der gleichen Funkzeit wie diejenige von Stahl möglich. Eine spezielle Kalibriertechnik mit Stahlproben garantiert ein ausreichend reproduzierbares und richtiges Resultat in relativ kurzer Zeit (20 sec).
    Notes: Abstract The conditions of pig iron analysis by using a direct reading spectrometer for routine determination of C, Si, Mn, P, S and Cu, the influence of sampling and a new calibration technique of the instrument are described. The whole time needed for complete spectrometrical analysis is about 20 sec.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00530776
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Fortschritte bei der emissionsspektrometrischen Stahlanalyse (1970)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 250 (1970), S. 369-376 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Eine Verbesserung der Reproduzierbarkeit der Ergebnisse der emissionsspektrometrischen Analyse bei Fertigproduktproben aus Roheisen und Stahl, sowie gewalztem Stahl oder Blech kann mit Hilfe des Mehrfleckanfunkens in Kombination mit einer beschriebenen Kalibriertechnik unter Festlegung der Eichkurve im Koordinatensprung und dem Anfunken durch eine Bornitrid-Blende bewirkt werden. Durch eine geringe Änderung im Meßkreis des verwendeten Spektrometers kann erreicht werden, daß die Meßkondensatoren nicht nach jedem Anfunkprozeß entladen werden und die bei wiederholtem Anfunken resultierenden Spannungen zusätzlich auf diesen integriert werden können. Vier verschiedene Anfunkungen in dieser Weise mit je 5 sec Integration ergeben eine bessere Reproduzierbarkeit und Richtigkeit gegenüber der gebräuchlichen einmaligen Anfunkung mit 20 sec Integration. Mit Hilfe dieser Methodik ist auch die schnelle spektrometrische Analyse von gewalztem Stahl mit nicht erfaßbarer Seigerung möglich. Die Ergebnisse an Spanpreßlingen werden ebenfalls verbessert.
    Notes: Abstract An increase of precision in emission-spectrometric analysis of samples from finished pig iron and steel charges or rolled steel and sheet-iron is effected by a combination of the method of more-spot sparking, the described technique of calibration with electronic fixation of zero of the calibration curves and sparking through a bornitride disc. By making a simple change in the switch in the measuring circuit of the spectrometer in application, it can be effected that after a single spark the recording by the measuring condensers does not get discharged when the next sparking process takes place. On account of this the intensities of the various successive sparks add together and then integrate on the charged condensers. Thus when sparked each 5 sec for four times it accounts to a considerable increase in the precision and accuracy when compared with the usual method to spark for 20 sec only once. Due to the appearance of a insignificant amount of segregation in rolled steel the application of emission-spectrometry to its analysis is possible and better results are obtained from sparking briquetted chips.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00464735
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Direkte photometrische Bestimmung von Kobalt in Eisen, Stählen, Erzen und Schlacken mit Nitroso-R-Salz (1970)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 249 (1970), S. 307-312 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die direkte Bestimmung von Kobalt in unterschiedlichen Substanzen im Gehaltsbereich von 0,001 bis 5% ist nach einem einfachen Verfahren möglich, wenn die Komplexbildungsreaktion und der tatsächliche Störeffekt durch andere Elemente bekannt sind. Die für eine Bestimmung benötigte Zeit beträgt 25 min. Die relative Standardabweichung liegt zwischen 0,02–20%.
    Notes: Abstract A simple procedure without any separation is described; the complex formation and the interfering effects of other elements are studied. This method is suitable for the accurate determination of 0.001 to 5% of cobalt in several materials. The time required for one determination is 25 min only. The coefficients of variation are within 0.02–20%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00456862
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Structure of hygromycin B, an antibiotic from Streptomyces hygroscopicusPresented in part at the Ninth Interscience Conference on Antimicrobial Agents and Chemotherapy, Washington, D.C., October 27-29, 1969.; The use of CMR. spectra in structure determination, I (1970)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 53 (1970), S. 2314-2319 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Das Antibioticum Hygromycin B, eine Verbindung C20H37N3O13 aus Streptomyces hygroscopicus, wurde hydrolytisch gespalten und die Spaltprodukte charakterisiert und identifiziert. Die Kenntnis ihrer Struktur und die Interpretation von 13C-NMR.- (CMR.)- Spektren führten zur Strukturaufklärung des Antibiotikums.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19700530846
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    Paper (German National Licenses)
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