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  • 1990-1994  (7)
  • 1960-1964  (1)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 94 (1990), S. 6316-6320 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 1505-1507 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial thin films of ferroelectric bismuth titanate Bi4Ti3O12 have been grown by pulsed laser deposition on single-crystal [100] SrTiO3 substrates. Bismuth titanate has a high Curie temperature (675 °C) and saturation polarization values of 4 and 50 μC/cm2 along the c and b axis, respectively. Its a,b lattice parameters allow thin-film growth on substrates such as SrTiO3, LaAlO3, MgO, etc. These single crystalline films exhibit good quality as evidenced by x-ray diffraction, Rutherford backscattering, and transmission electron microscopy. Applications for these films include memory devices and optical displays.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 98 (1994), S. 6509-6513 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
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    Oxford : Periodicals Archive Online (PAO)
    German history. 12:3 (1994:Oct.) 434 
    ISSN: 0266-3554
    Topics: History
    Description / Table of Contents: BOOK REVIEWS
    Notes: SPECIAL ISSUE: PRUSSIA FROM ROSSBACH TO JENA
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Cambridge University Press
    International journal of Middle East studies 24 (1992), S. 308-310 
    ISSN: 0020-7438
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-0533
    Keywords: Key words Huntington's disease ; Human cerebral cortex ; Striatum ; Neurone number ; Stereology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The total cortical and striatal neurone and glial numbers were estimated in five cases of Huntington's disease (three males, two females) and five age- and sex-matched control cases. Serial 500-μm-thick gallocyanin-stained frontal sections through the left hemisphere were analysed using Cavalieri's principle for volume and the optical disector for cell density estimations. The average cortical neurone number of five controls (mean age 53±13 years, range 36 – 72 years) was 5.97×109±320×106, the average number of small striatal neurones was 82×106±15.8×106. The left striatum (caudatum, putamen, and accumbens) contained a mean of 273×106±53×106 glial cells (oligodendrocytes, astrocytes and unclassifiable glial profiles). The mean cortical neurone number in Huntington's disease patients (mean age 49±14 years, range 36 – 75 years) was diminished by about 33  % to 3.99×109±218×106 nerve cells (P≤ 0.012, Mann-Whitney U-test). The mean number of small striatal neurones decreased tremendously to 9.72 × 106± 3.64×106 ( – 88  %). The decrease in total glial cells was less pronounced (193 × 106±26 × 106) but the mean glial index, the numerical ratio of glial cells per neurone, increased from 3.35 to 22.59 in Huntington's disease. Qualitatively, neuronal loss was most pronounced in supragranular layers of primary sensory areas (Brodmann's areae 3,1,2; area 17, area 41). Layer IIIc pyramidal cells were preferentially lost in association areas of the temporal, frontal, and parietal lobes, whereas spared layer IV granule cells formed a conspicuous band between layer III and V in these fields. Methodological issues are discussed in context with previous investigations and similarities and differences of laminar and lobar nerve cell loss in Huntington's disease are compared with nerve cell degeneration in other neuropsychiatric diseases.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-0533
    Keywords: Huntington's disease ; Human cerebral cortex ; Striatum ; Neurone number ; Stereology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The total cortical and striatal neurone and glial numbers were estimated in five cases of Huntington's disease (three males, two females) and five age-and sex-matched control cases. Serial 500-μm-thick gallocyanin-stained frontal sections through the left hemisphere were analysed using Cavalieri's principle for volume and the optical disector for cell density estimations. The average cortical neurone number of five controls (mean age 53±13 years, range 36–72 years) was 5.97×109±320×106, the average number of small striatal neurones was 82×106±15.8×106. The left striatum (caudatum, putamen, and accumbens) contained a mean of 273×106±53×106 glial cells (oligodendrocytes, astrocytes and unclassifiable glial profiles). The mean cortical neurone number in Huntington's disease patients (mean age 49±14 years, range 36–75 years) was diminished by about 33% to 3.99×109±218×106 nerve cells (P≦0.012, Mann-Whitney U-test). The mean number of small striatal neurones decreased tremendously to 9.72×106±3.64×106 (−88%). The decrease in total glial cells was less pronounced (193×106±26×106) but the mean glial index, the numerical ratio of glial cells per neurone, increased from 3.35 to 22.59 in Huntington's disease. Qualitatively, neuronal loss was most pronounced in supragranular layers of primary sensory areas (Brodmann's areae 3,1,2; area 17, area 41). Layer IIIc pyramidal cells were preferentially lost in association areas of the temporal, frontal, and parietal lobes, whereas spared layer IV granule cells formed a conspicuous band between layer III and V in these fields. Methodological issues are discussed in context with previous investigations and similarities and differences of laminar and lobar nerve cell loss in Huntington's disease are compared with nerve cell degeneration in other neuropsychiatric diseases.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 10 (1962), S. 381-391 
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Examination of the cerebrospinal fluid in brain tumours with regard to the content of lactic acid, pyruvic acid, lactate dehydrogenase and aldolase shows no deviation from normal values. Determinations of these values from arterial and cerebral venous blood in connection with measurements of cerebral blood flow and of the amount of cerebral oxygen and glucose consumption, show that the quantitative cerebral balance with reference to intake or output of lactic acid, pyruvic acid and lactate dehydrogenase even in very extensive malignant brain tumours show the same results, as in healthy subjects. Output of higher amounts of aldolase in case of cerebral tumours was more frequently found, but in other tumours, some very extensive, there were negative balances. Also the quotient of glucose to oxygen consumption does not deviate from the average when compared to values in healthy patients. A higher shave of glycolysis in carbohydrate metabolism of cancer cells does not show in this examination. A biochemical cancer test for cerebral tumours on the basis of the above metabolic properties is not available.
    Abstract: Résumé Chez les sujets atteints de tumeur cérébrale, la teneur du LCR en ac. lactique, ac. pyruvique, lactate de deshydrogénase, et en aldolase, n'est pas différente des taux normaux. Ces mêmes mesures effectuées dans le sang artériel et veineux du cerveau, en relation avec les valeurs du volume du sang circulant et de la consommation d'O2 et de glucose à ce niveau, montrent que le bilan cérébral quantitatif relatif à l'utilisation ou au rejet des ac. lactique et pyruvique et du lactate de deshydrogénase, donne des résultats analogues chez des sujets porteurs de tumeurs très étendues et chez des sujets sains. On a fréquemment trouvé des valeurs élevées d'aldolase dans des cas de tumeurs cérébrales, toutefois chez d'autres sujets avec tumeurs mêmes très étendues les bilans furent négatifs. Même le quotient de la consommation de glucose/consommation d'O2 ne varie pas en moyenne, que les sujets soient sains ou porteurs de tumeurs cérébrales. Une partie élevée de la glycolyse du métabolisme des hydrates de carbone des cellules tumorales n'est pas mise en évidence par ces expériences. Ainsi on ne peut pas encore entrevoir de test basé sur le métabolisme de ces substances qui permettrait le diagnostic des tumeurs malignes.
    Notes: Zusammenfassung Untersuchungen des Liquors bei Hirntumoren auf den Gehalt an Milchsäure, Brenztraubensäure, Lactatdehydrogenase und Aldolase zeigen keine Abweichungen im Vergleich zur Norm. Differenzbestimmungen dieser Werte aus dem arteriellen Blut und dem Hirnvenenblut in Verbindung mit Messungen des Hirndurchblutungsvolumens, des cerebralen Sauerstoffverbrauches und Glukoseverbrauches zeigen, daß die quantitativen cerebralen Bilanzen bezüglich Aufnahme oder Abgabe von Milchsäure, Brenztraubensäure und Lactatdehydrogenase selbst bei zum Teil sehr ausgedehnten malignen Hirngeschwülsten dieselben Ergebnisse zeigen wie bei Gesunden. Abgabe höherer Werte von Aldolase bei Hirntumoren wurde häufiger gefunden, doch ergaben andere zum Teil ausgedehnte Geschwülste negative Bilanzen. Auch der Quotient Glukoseverbrauch/Sauerstoffverbrauch weicht bei Hirntumoren im Mittelwert nicht von Befunden bei Gesunden ab. Der hohe Anteil der Glykolyse am Kohlehydratstoffwechsel der Krebszelle kommt in diesen Untersuchungen nicht zum Ausdruck. Ein auf dieser Stoffwechseleigenheit basierender diagnostisch-klinischer Krebstest für Hirngeschwülste läßt sich nicht darstellen.
    Type of Medium: Electronic Resource
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