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  • Articles: DFG German National Licenses  (13)
  • 1985-1989  (8)
  • 1970-1974  (5)
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  • Articles: DFG German National Licenses  (13)
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    7,8-Dihydro-8-hydroxy-2-methyl-3H,6H-[1,3]thiazino[3,2-b][1,2,4]triazine-3-one (1974)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 30 (1974), S. 1613-1615 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740874005395
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Cholecystokinin in the Medial Parvocellular Subdivision of the Paraventricular Nucleus: Co-existence with Corticotropin-releasing Hormone (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 448 (1985), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1985.tb29915.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation and electron spin resonance study of copper(II) complexes with sugar type ligands (1989)
    Springer
    Journal of chemical crystallography 19 (1989), S. 911-918 
    Details
    ISSN: 1572-8854
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A series of copper(II) complexes with sugar type ligands (polyalcohols, sugar acids, di- and trisaccharides) was prepared. The compositions of the complexes were determined by standard analytical methods. The results showed that carboxylato and deprotonated alcoholic hydroxy groups participate in the complex formation. The EPR spectra and magnetic susceptibility data reflected the formation of species containing isolated copper(II) centers indicating that in those molecules which contain two copper ions, these are separated by sugar ligands.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01185357
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Comparative studies on the125I uptake of the thyroid and thymus (1973)
    Springer
    Cellular and molecular life sciences 29 (1973), S. 357-358 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wird gezeigt, dass an erwachsenen und neugeborenen Ratten die Jodaufnahme des Thymus bei den letzteren viel höher ist als die Jodaufnahme der Thyroidea. Dies unterstützt die These, wonach die Jodspeicherkapazität der Thyroidea das Resultat einer Differenzierung darstellt, indem auf früherer ontogenetischer Stufe für den ganzen Vorderdarm eine Jodspeicherkapazität besteht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01926529
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  • 5
    Electronic Resource
    Electronic Resource
    Si etching affected by ir laser irradiation (1985)
    Springer
    Applied physics 37 (1985), S. 117-119 
    Details
    ISSN: 1432-0630
    Keywords: 82.50 ; 79.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Silicon was etched in an aqueous solution of sodium hydroxide under ir laser irradiation. Two types of lasers were used, a Nd:YAG laser with a wavelength of λ=1.06 μm and a CO2 laser with λ=10.6 μm. Small-size blind holes, through holes and reliefs were formed on a Si target, and even a special type of hole can be formed with help of a CO2 laser, namely a blind hole with a hillock in its center.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00618861
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Histochemie der limbischen Hemmung (1971)
    Springer
    Histochemistry and cell biology 28 (1971), S. 38-54 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Der Stoffwechsel der Gamma-amino-Buttersäure (GABS) wurde mit Hilfe einer klassischen chromogenen histochemischen Methode (Nachweis von GABS-Transaminase→Succin-semialdehyd-Dehydrogenase) sowie mit licht- und elektronenmikroskopischer Autoradiographie des Enzymhemmstoffes 14C-Thiosemicarbazid im Hippocampus der Ratte untersucht. Die histochemische wie auch die autoradiographische Methode beweisen eine gliozelluläre Lokalisation des GABS-Stoffwechsels, der sich hauptsächlich an glioneuronalen Zwischenmembranen konzentriert. Sich widersprechende Angaben der einschlägigen biochemischen Literatur können anhand unserer Ergebnisse interpretiert werden. Die glio-zelluläre Lokalisation des limbischen GABS-Stoffwechsels eröffnet neue Perspektiven für die neurophysiologische Interpretierung und pharmakotherapeutische Beeinflussung der Anomalien der Verhaltens-Reflexmechanismen.
    Notes: Summary GABA-metabolism in the rat hippocampal formation has been studied by means of classical chromogenic histochemistry (localisation of the GABA-transaminase→succinic semialdehyde dehydrogenase system) and by means of light- and electron microscopic autoradiographic localization of the enzyme-inhibitor 14C-thiosemicarbazide. Both the histochemical and the autoradiographic approaches proved a gliocellular localization of GABA metabolism, concentrated at glio-neuronal interfaces. Contradictory data of relevant biochemical literature can readily be explained on the basis of these results, offering new perspectives for neurophysiological interpretation and pharmacotherapeutical treatment of behavioral limbic disorders.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00305631
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Further data on the existence of a neural pathway from the adrenal gland to the hypothalamus (1974)
    Springer
    Cell & tissue research 153 (1974), S. 559-564 
    Details
    ISSN: 1432-0878
    Keywords: Hypothalamus ; Afferents ; Adrenal gland ; Protein synthesis ; Auto-radiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The effect of unilateral adrenalectomy on the incorporation of tritiated leucine into the ventromedial nucleus of both sides of the rat hypothalamus was studied by light- and electron-microscopical autoradiography. The left adrenal had been removed and 14 days later labeled amino acid was given intravenously. Rats were killed 5, 30, 60 and 120 min after isotope administration. Following unilateral adrenalectomy there is a marked difference in the autoradiographic reaction of both sides of the hypothalamic ventromedial nucleus. On the right side the number of autoradiographic silver grains is much higher than on the left side, the difference being statistically significant for each animal and for each time interval. In accordance with previous findings the data suggest the existence of a neural pathway from the adrenal gland to the hypothalamus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00231547
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    X-ray and dissolution studies of paramylon storage granules fromEuglena (1988)
    Springer
    Protoplasma 146 (1988), S. 150-156 
    Details
    ISSN: 1615-6102
    Keywords: β-1,3 Glucan ; Euglena ; Freeze-etch ; Microfibril ; Paramylon ; X-ray diffraction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Paramylon is the β-1,3 glucan storage carbohydrate in the euglenoid algae. Mature paramylon granules are highly crystalline, fibrillar, and have a complex substructure. X-ray diffraction was used to demonstrate that mature paramylon granules are much more crystalline than immature granules. Freeze-etch electron microscopy showed that in mature granules, the microfibrils are organized in highly ordered arrays while the microfibrils of immature granules are less organized. The data suggest that the high crystallinity of paramylon is due to higher-order aggregates of microfibrils and the interaction of water with the microfibrils. The dissolution of paramylon was recorded by darkfield videomicroscopy. In a 0.5 N NaOH solution, paramylon dissociates in a regular manner into its constituent 4 nm microfibrils, and the central region of the granule is the last remaining refractile area during the dissolution process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405924
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    The light-harvesting chlorophyll a/b protein acts as a torque aligning chloroplasts in a magnetic field (1986)
    Springer
    Photosynthesis research 10 (1986), S. 217-222 
    Details
    ISSN: 1573-5079
    Keywords: light-harvesting chlorophyll a/b protein ; liquid crystal ; magnetic susceptibility ; polarized fluorescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Displacement of particles from the purified light-harvesting chlorophyll a/b protein aggregate (LHC) was studied in magnetic fields of various strengths (0 to 1.6 T) by polarized fluorescence measurements. Macromolecular aggregates of LHC have a considerable magnetic susceptibility which enables the particles to rotate and align with their nematic axes parallel with H. As LHC is embedded in a transmembrane direction thylakoids should align perpendicular to H, the mode of alignment experimentally observed in thylakoids. The value of the magnetic susceptibility could be estimated by relating it to the integral susceptibility of the chlorophyll molecules in LHC. The fitting of this value with the field strength dependency of the fluorescence polarization ratio (FP) revealed a relationship between the LHC content of various photosynthetic membranes and their capacity for alignment, which suggested that LHC might be the torque ordering chloroplasts in a magnetic field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00118286
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Energization and ultrastructural pattern of thylakoids formed under periodic illumination followed by continuous light (1986)
    Springer
    Photosynthesis research 9 (1986), S. 229-238 
    Details
    ISSN: 1573-5079
    Keywords: granum formation ; light harvesting pigment-protein complex ; thermoluminescence membrane shrinkage ; energy conservation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Bean leaves grown under periodic illumination (56 cycles of 2 min light and 98 min darkness) were subsequently exposed to continuous illumination, and in connection with granum formation and accumulation of the light-harvesting pigment-protein complex thermoluminescence and light-induced shrinkage of thylakoid membranes were studied. Juvenile chloroplasts with large double sheets of thylakoids obtained under periodic light exhibited low temperature spectra of polarized fluorescence yielding fluorescence polarization (FP) values 〈 1 at 695 nm, characteristic for pheophytin emission. In the course of maturation under continuous light when normal grana appeared and the chlorophyll a/b light-harvesting photosystem II complex was incorporated into the membrane, at 695 nm the relative intensity of fluorescence dropped and FP changed to a value of 〉 1, suggesting an overlap between the emission of pheophytin and that of the chlorophyll a/b light-harvesting photosystem II complex. Thermoluminescence glow curves recorded with juvenile thylakoids displayed a relatively high proportion of emission at low temperatures (around -10°C) while with mature chloroplasts, more thermoluminescence originated from energetically deeper traps (discharged around 28°C). This means that during thylakoid development the capacity of the membrane to stabilize the separated charges increases, which might be favourable for the ultimate conservation of energy. The more extensive energization of mature thylakoids was also indicated by a light-induced decrease in the thickness of the membranes upon illumination; a change which could not be detected in juvenile thylakoids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00029746
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