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  • 1970-1974  (6)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 26 (1970), S. 181-182 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Riassunto La deidrogenasi dell'acido succinico (SDH) e la diaforasi diposforpiridin-nucleotide (DPN-D) hanno dimonstrato attività intensa nei glomeruli delo strato granulare cerebellare, nella parte più profonda dello strato molecolare e nelle lamine lacunosa e molecolare dell'ippocampo. Tutte queste zone sono caratterizzate da numerose connessioni sinaptiche. L'attività degei enzimi ossidanti in queste zone aumenta rapidamente con la crescita degli animali.
    Type of Medium: Electronic Resource
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  • 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: By macroautoradiography and by GLC separation, differences in the uptake of radioactive carbon from [U-14C]glucose into free amino acids (glutamate + glutamine, aspartate + asparagine, GABA, alanine and glycine) in mouse cerebral neocortex, hippocampus, thalamus and hypothalamus were investigated.(1) The autoradiographical densities in the thalamus, cerebral neocortex and hippocampus measured with a microdensitometer were higher than that in the hypothalamus at 5 min after subcutaneous injection. At 180 min, densities in the cerebral neocortex, hippocampus and hypothalamus were higher than that in thalamus.(2) The free amino acid levels determined by GLC varied with each brain region.(3) The specific radioactivity (d.p.m./μmol) of alanine in each brain region was higher than that of the other amino acids at 5 min after the injection. The specific radioactivity of GABA in the brain regions was clearly higher than that of (glutamate + glutamine), (aspartate + asparagine) and glycine at 5 and 15 min.(4) The autoradiographical data were in good agreement with the chemical data at 5 min but were different at 180 min.(5) Variations in specific radioactivity of each free amino acid among brain regions at 5 min were influenced greatly by existing free amino acid concentrations in each region.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 23 (1974), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: —During anoxia induced by the administration of potassium cyanide, [U-14C]glucose was injected intraperitoneally into adult mice and they were decapitated at 5, 15 and 30 min after the injection. After freeze-drying in vacuo, differences in the uptake of radioactive carbon from [U-14C]glucose into free amino acids (glutamate + glutamine, aspartate + asparagine, GABA, alanine and glycine) in mouse cerebral neocortex, cerebellar hemisphere, caudate nucleus, thalamus, hypothalamus and medulla oblongata were investigated (by macroautoradiography and GLC separation) and compared with those obtained under normal conditions.(1) During anoxia, autoradiographical densities in the thalamus and medulla oblongata were higher than that in the cerebral neocortex and caudate nucleus.(2) Among specific radioactivities (d.p.m./μmol) of free amino acids, alanine gave the highest value during anoxia, except in the cerebellar hemisphere and hypothalamus at 5 min and the medulla oblongata at 30 min.(3) During anoxia, the specific radioactivities of alanine and glycine in each brain region did not significantly decrease at 15 and 30 min compared with those under normal conditions. During anoxia, the specific radioactivity of glutamate + glutamine in the cerebellar hemisphere and hypothalamus did not significantly decrease compared with the normal conditions, while that of GABA, aspartate + asparagine and glutamate + glutamine in the cerebral neocortex, caudate nucleus, thalamus and medulla oblongata showed an increase.(4) The percentage decrease of glutamate + glutamine and aspartate + asparagine at 5 and 15 min was highly significant in the cerebral neocortex and caudate nucleus.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 246 (1973), S. 151-152 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Cytosine arabinoside, a common antitumour drug, inhibits DNA polymerase7'8. Because of this, it is used in the treatment of some viral infections, such as herpesvirus infection9"11 and cytomegalic inclusion disease12. We have investigated the possible effects of this drug on the developing mouse ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 8 (1973), S. 1725-1730 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Thermal properties and chemical compositions of glasses suitable for crystallization of ferro-electric Pb5Ge3O11 are described. The crystallization of lead germanate glass was investigated by DTA and X-ray diffraction. In the range from 62 to 62.5 of PbO in mole per cent, Pb5Ge3O11 was obtained as a single phase after a heat treatment. In the chemical composition around 5PbO·3GeO2 in the binary system of PbO-GeO2, Pb5Ge3O11 and two new phases of Pb3Ge2O7 and Pb3GeO5 were found to exist. The crystal structure of Pb3Ge2O7 had a hexagonal symmetry witha=10.16 Å andc=19.37 Å, and Pb3GeO5 was classified into orthorhombic system witha=4.85 Å,b=15.52 Å and c=11.77 Å.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 8 (1973), S. 1725-1730 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Thermal properties and chemical compositions of glasses suitable for crystallization of ferro-electric Pb5Ge3O11 are described. The crystallization of lead germanate glass was investigated by DTA and X-ray diffraction. In the range from 62 to 62.5 of PbO in mole per cent, Pb5Ge3O11 was obtained as a single phase after a heat treatment. In the chemical composition around 5PbO·3GeO2 in the binary system of PbO-GeO2, Pb5Ge3O11 and two new phases of Pb3Ge2O7 and Pb3GeO5 were found to exist. The crystal structure of Pb3Ge2O7 had a hexagonal symmetry witha=10.16 Å andc=19.37 Å, and Pb3GeO5 was classified into orthorhombic system witha=4.85 Å,b=15.52 Å and c=11.77 Å.
    Type of Medium: Electronic Resource
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