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
  • 1-N^6-Etheno-[erythro-9-(2-hydroxy-3-nonyl)] adenine  (1)
  • Chemistry  (1)
  • Fluorescence spectroscopy  (1)
  • 1
    ISSN: 0014-5793
    Keywords: 1-N^6-Etheno-[erythro-9-(2-hydroxy-3-nonyl)] adenine ; Adenosine deaminase ; Etheno-adenine ; Fluorescence polarization ; Fluorescent inhibitor ; pH indicator
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-0878
    Keywords: Hypothalamus ; Glia structure ; Fluorescence spectroscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Fluorescence spectroscopy and electron microscopic techniques have been employed to investigate a class of glial cells that is characterized by the presence in their cytoplasm of large fluorescing inclusions that stain with paraldehyde-fuchsin or chrome-hematoxyline-alum. In the periventricular nucleus the cells have been identified as a population of astrocytes whose inclusions emit an orange-red fluorescence. In the arcuate nucleus there are, in addition to an overwhelming majority of such astrocytes, also some microglial cells with similar characteristics. The ability of the latter to emit any kind of fluorescence has not yet been established. The fluorescence maximum of these astrocytic inclusions was found to be at 640 nm when excited at 405 nm. The data obtained suggest that the fluorescence observed is due to the presence of porphyrins in the astrocytic inclusions. In the majority of our electron microscopic pictures the inclusions lack a bounding membrane. By contrast, neuronal lipofuscin has an outer membrane. In cryostat sections, the lipofuscin emits a yellow fluorescence when excited at 400–410 Onm.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 71 (1964), S. 33-46 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die Kinetik der Styrolpolymerisationen durch stereospezifische feste Katalysatoren, die durch Einwirkung von Titantetrachlorid auf Alkylmagnesiumbromid hergestellt wurden, wurde untersucht.Die Aktivierungsenergie war kleiner als die, die mit aktiveren Katalysatoren, welche amorphe Polymere mit niederen Molekulargewichten erzeugten, beobachtet wurde. Die gemessenen Geschwindigkeiten (und Aktivierungsenergien) waren keine einfachen chemischen Faktoren, da die Polymerisation bereits am Anfang durch Anhäufung von Polymerisat auf der Katalysatoroberfläche gehemmt wurde.Die Kinetik der Polymerisation durch eingehüllte Katalysatorteilchen wird erörtert.
    Notes: The kinetics of polymerisation of styrene by stereospecific solid catalysts prepared by reacting titanium tetrachloride with alkyl magnesium bromide have been studied.The energy of activation was smaller than that observed with the more active catalysts which gave low molecular weight amorphous polymer. The rates (and activation energies) measured were not simple chemical factors as the polymerisation is restricted from the earliest stages by accumulation of polymer on the catalyst surface.The kinetics of polymerisation at encapsulated catalyst particles are discussed.
    Additional Material: 6 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...