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
  • 1
    ISSN: 1432-0428
    Keywords: Chinese hamster ; spontaneous diabetes ; glucosuria ; ketonuria ; glycogen ; glycogen accumulation ; retina ; Müller cell ; kidney ; distal tubule ; pancreatic islet ; a cell ; Β cell ; D cell ; electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intracellular glycogen deposits were consistently found in the retina, kidney and pancreatic islets of diabetic-ketonuric Chinese hamsters. Accumulation of glycogen in the outer nuclear layer of the retina was mostly associated with severity of the disease, but was not related to age or sex. The type of retinal cell involved in the accumulation of glycogen was not clearly established. However, the position of the affected cell, side by side with retinal neurons, suggests that the glycogen deposits were within Müller cells. These giant glias normally synthesize and store glycogen. All ketonuric Chinese hamsters examined showed some accumulation of glycogen in distal tubules of the kidney. This abnormal glycogen was not found in glucosuric non-ketonuric or in nondiabetic Chinese hamsters. Variable amounts of glycogen were found inΒ cells of pancreatic islets of diabetic hamsters, as reported by others. However, accumulation of glycogen was also found inα and D islet cells from 2 middle aged Chinese hamsters with long term glucosuria and recent ketonuria. Abnormal glucose and glycogen metabolism seem to play an important role in the pathogenesis of diabetes in the Chinese hamster.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 20 (1973), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The isolation of synaptic vesicles from mouse brain by a modification of previously reported methodology is described. Homogeneity of the preparations was ascertained by electron microscopy. Vesicles thus isolated contained cyclic AMP (365 ± 44 pmol/mg of protein; mean ± S.E.M.) and adenosine 3′,5′-monophosphate phosphodiesterase activity (500 pmol/mg of protein per 30 min). The number of vesicles in three of the vesicle preparations was determined by a visual count of grid fields under the electron microscope. The content of cyclic AMP in the vesicles was calculated at 5000-7500 molecules/vesiclc. The presence of cyclic AMP in the synaptic vesicles from presynaptic nerve endings would support a role for this nucleotide in nerve transmission.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    facet.materialart.
    Unknown
    New York : Periodicals Archive Online (PAO)
    Romanic Review. 61:1 (1970:Feb.) 43 
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    facet.materialart.
    Unknown
    New York, etc. : Periodicals Archive Online (PAO)
    Italica. 45:2 (1968:June) 264 
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    facet.materialart.
    Unknown
    New York, etc. : Periodicals Archive Online (PAO)
    Italica. 42:1 (1965:Mar.) 135 
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    facet.materialart.
    Unknown
    New York, etc. : Periodicals Archive Online (PAO)
    Italica. 45:1 (1968:Mar.) 28 
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 17 (1966), S. 213-218 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Anodic corrosion processes on steels in inert and oxidising atmospheresThe purpose of the investigation here described was to find out to what extent electrochemical techniques lend themselves to the examination of steel corrosion in the presence of molten sulphates and combustion gases. The measured equilibrium potentials of an inert metal electrode are intended to serve for the determination of the redox potential in the salt melt/combustion gases system. If no current is flowing, the stationary potential of a platinum electrode in a sulphate melt at 600° C can be expressed by the equation \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm E} = 0.712 + 0.088\log {\rm PS0}_{\rm 2} \cdot {\rm P0}_{\rm 2} $$\end{document} where E signifies the potential related to the silver/silver sulphate electrode, and pSO2 pO2 the partial pressures (in atmospheres) of the two gases in an inert gas (nitrogen + carbon dioxide). The formula permits the conclusion that the electrode reaction can be expressed by the equilibrium condition .The anode currents set up if the potential of a mild steel or pure iron electrode is kept at the above-mentioned temperature viz. -0.3 V with N2 + CO2 + 5% O2, or + 0.4 V with N2 + CO2 + 0.2% SO2, show that under the test conditions, these metals would be greatly exposed to corrosion. Stainless steels become passive after a few hours although a residual corrosion current at + 0.4 V remains. These observations give rise to the expectation that electro-chemical examinations may well represent a useful means of examining corrosion phenomena caused by molten salts in the presence of combustion gases, so that they merit more detailed investigation.
    Notes: Durch die beschriebene Untersuchung sollten geprüft, wie weit sich elektrochemische Techniken für die Untersuchung der Korrosion von Stahl in Gegenwart von geschmolzenen Sulfaten und von Verbrennungsgasen eignen. Die gemessenen Gleichgewichtpotentiale einer inerten Metallelektrode sollen zur Feststellung des Redox-Potentials im System Salzschmelze/Verbrennungsgase dienen. Das stationäre Potential einer Platinelektrode in einer Sulfatschmelze an 600° C läßt sich - für den Fall, daß kein Strom fließt - darstellen durch die Gleichung \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm E} = 0,712 + 0,088\log {\rm PS0}_{\rm 2} \cdot {\rm P0}_{\rm 2} $$\end{document} wobei E dem Potential, bezogen auf die Silber/Silbersulfat-Elektrode und pSO2 pO2 wie pO2 den Partialdrücken (in at) der beiden Gase in einem Trägergas (Stickstoff + Kohlendioxyd) entsprechen. Die Formel erlaubt den Schluß, daß die Elektrodereaktion durch das Gleichgewicht darstellbar ist.Die Anodenströme, die fließen, wenn das Potential eines Flußstahls oder einer Elektrode aus der oben genannten Temperatur befindlichen Sulfatschmelze konstant gehalten wird (-0,3 V bie N2 + CO2 + 5% O2, bzw. + 0,4 V bei N2 + CO2 + 0,2% SO2), zeigen, daß diese Metalle unter den Bedingungen des Versuches stark angegriffen wurden. Rostfreie Stähle werden nach wenigen Stunden passiv obwohl ein Korrosions-Reststrom bei + 0,4 V verbleibt. Diese Beobachtungen lassen vermuten, daß elektrochemische Untersuchungen ein durchaus nützliches Mittel zur Untersuchungen der Korrosion durch geschmolzene Salze in Gegenwart von Verbrennungsgasen können und daher eingehender untersucht werden sollten.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 9 (1974), S. 503-505 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    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...