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
  • 2005-2009  (1)
  • 1965-1969  (20)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 100 (1969), S. 968-975 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract The attempted preparation of 4-vinyltriarylmethyl radicals by interaction of 4-vinyltriarylmethylchlorides with metals yielded unstable radical intermediates immediately undergoing further reaction to give polymers of a quinodimethane structuretype. 1,4-α,α-Diphenylquinodimethane, obtained from 4-methyltriphenylmethyl chloride and pyridine in solution, was used as a model compound. It cannot be isolated and readily polymerizes to give poly-1,4-α,α-diphenylxylylene identified by IR and NMR spectra.
    Notes: Zusammenfassung Beim Versuch zur Darstellung von 4-Vinyltriarylmethylradikalen durch Umsetzung von 4-Vinyltriarylmethylchloriden mit Metallen entstehen intermediär Radikale, die jedoch sofort in einer mesomeren Form weiterreagieren, wobei Polymere mit Chinodimethan-Strukturen entstehen. Als Modell hierfür dient das gelbe 1,4-α,α-Diphenylchinodimethan, das aus 4-Methyltriphenylmethylchlorid und Pyridin in Lösung erhalten werden kann; es ist nicht in fester Form isolierbar und polymerisiert sich leicht zu Poly-1,4-α,α-diphenylxylylen, das durch IR- und NMR-Spektren identifiziert wird.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The reaction-constellation types 3, 5, 6, and 7 (afterWuhrmann andMärki) could be determined in the serum-proteins of cadavers with paper electrophoresis if the deceased patient had been afflicted with a carcinoma, a cirrhosis of the liver, an uncomplicated nephrosis, or with a paraproteinosis. Extensive métastases in a severely damaged liver (cirrhosis) did not lead to an increase ofα 2-globulin. Paraproteins could be detected by antigen analytical methods independent of the hemolytic condition of the cadaver serum. This was especially important when a paraprotein had not been revealed in the clinic.
    Notes: Zusammenfassung Aus Leichenseren ließen sich papierelektrophoretisch die Reaktions-Konstellationstypen 3, 5, 6 und 7 des Serumeiweißbildes nachWuhrmann undMärki bestimmen, wenn die Verstorbenen entsprechend an einem Carcinom, einer Lebercirrhose, einer unkomplizierten Nephrose oder einer Paraproteinose gelitten hatten. Ausgedehnte Metastasierung in eine stark vorgeschädigte Leber (Lebercirrhose) führte nicht zu einer α2-Globulinerhöhung. Paraproteine konnten unabhängig vom Zustand des Leichenserums hinsichtlich des Ausmaßes der Hämolyse antigenanalytisch erfaßt werden. Das war besonders dann bedeutsam, wenn in der Klinik ein Paraprotein nicht nachgewiesen worden war.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Cellulose-ion-exchange chromatography is a technically simple procedure suited to elute rabbit gamma-globulin of a specific antibody character directed against rat renal tissue. With this procedure, the globulins preserve their specific antibody character. On i. v. injection into healthy rats these globulins are as capable of inducing a glomerulitis as i. v. administered socalled nephrotoxic whole serum.
    Notes: Zusammenfassung Die Cellulose-Ionen-Austausch-Chromatographie ist als ein technisch einfaches Verfahren geeignet, Gamma-Globuline von Kaninchen mit spezifischem Antikörpercharakter gegen Rattennierengewebe zu eluieren. Dabei scheinen diese Globuline ihren spezifischen Antikörpercharakter zu bewahren. Sie sind nämlich imstande, bei i.v. Injektion in gesunden Ratten ebenso eine Glomerulitis zu erzeugen wie i.v. einverleibtes sog. nephrotoxisches Vollserum.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 527-529 (Oct. 2006), p. 1141-1147 
    ISSN: 1662-9752
    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 paper investigates utilization of silicon carbide (SiC) Schottky power diodes asinverter Free Wheel Diodes (FWD) in a commercially available standard Econopak module alsopackaged with latest generation low-loss IGBT silicon. Static and switching characteristics of SiCdiodes over standard module operating temperature 25 0C to 125 0C (298 0K - 398 0K) aremeasured. Module Turn-on, Turn-off and conduction losses vs. frequency are calculated andmeasured for three phase motor drive operation. Measurements are compared to standard modulesusing all Silicon (Si) IGBT- diode. System benefits justifying the increased SiC diode cost, suchas EMI reduction, increased efficiency, reduced magnetic filter volume and reduced coolingrequirements at higher allowable switching frequencies is investigated
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The behavior of the serum proteins of “normal” cadavers having the reaction constellation 1 does not exceed the range of variation of normal serum (from normal patients), if the serum is not hemolyzed, or if it is only slightly hemolyzed. With increasing hemolysis the hemoglobin becomes visible, especially with paper electrophoresis, as an extra gradient in the α2-β-globulin fraction. The hemoglobin adulterates the relative protein values of the individual fractions. By antigen analytic methods, we were not able to demonstrate changes of the serum proteins in cadaver serum which was obtainable up to 36 hours after death. One may regard the study of cadaver serum within the limits mentioned as an essential aid in pathologic-anatomic diagnoses.
    Notes: Zusammenfassung Das Verhalten der Serumeiweißkörper in Leichenseren „in der Norm“ und mit der Reaktions-Konstellation 1 überschreitet nicht den Variationsbereich von Normal- bzw. Patientenseren, wenn das zu untersuchende Serum nicht hämolytisch oder nur sehr leicht hämolytisch ist. Mit zunehmender Hämolyse macht sich vor allem in der Papierelektrophorese das Hämoglobin in Form eines Extragradienten imα 2-β-Globulinbereich als Störfaktor bemerkbar und führt zu einer Verfälschung der relativen Eiweißwerte der einzelnen Fraktionen. Antigenanalytisch war es uns nicht möglich, am Leichenserum, das bis 36 Std nach dem Tode gewonnen werden konnte, Veränderungen an den Serumeiweißkörpern nachzuweisen. Man kann die Untersuchung des Leichenserums innerhalb der abgesteckten Grenzen als eine wesentliche Bereicherung der pathologisch-anatomischen Diagnostik ansehen.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Chromatographia 1 (1968), S. 405-405 
    ISSN: 1612-1112
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A simple thin layer chromatographic method is described which enables a direct separation of aliphatic monocarbonic acids on Kieselgel G. A mixture of methyl ethyl ketone/ethanol/25 % ammonia (65:15:28 parts by volume) is used as developing agent; for coloration of the plates methyl red is used.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 96 (1965), S. 631-641 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract In a direct one-step reaction of carbon disulfide with aliphatic or araliphatic dithiols in the presence of tertiary amines and lead(II)-ions cyclic or polymeric esters of trithiocarbonic acid, depending on the number of carbon atoms between the mercapto groups, can be obtained. The properties and spectra of the esters are reported. The poly-trithiocarbonates prepared are compared with the polymers made from thiophosgene and dithiols.
    Notes: Zusammenfassung Durch direkte Umsetzung von Schwefelkohlenstoff mit aliphatischen oder araliphatischen Dithiolen in Gegenwart von tertiären Aminen und Blei(II)-Ionen lassen sich in einem Reaktionsschritt je nach der Zahl der Kohlenstoffatome zwischen den Mercaptogruppen cyclische oder polymere Ester der Trithiokohlensäure erhalten. Es wird über deren Eigenschaften und Spektren berichtet. Die dargestellten Poly-trithiocarbonate werden mit den aus Thiophosgen und Dithiolen entstehenden Polymeren verglichen.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 78 (1966), S. 608-608 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 80 (1968), S. 407-407 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 77 (1965), S. 512-512 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    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...