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  • 11
    Electronic Resource
    Electronic Resource
    Non-steady state water adsorption of wood (1994)
    Springer
    Wood science and technology 28 (1994), S. 359-363 
    Details
    ISSN: 1432-5225
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary A rate equation of non-steady state adsorption for wood is theoretically discussed, and an adsorption equation is solved. This will clarify the mechanism of the mechano-sorptive process. Non-steady state water adsorption of wood cannot be represented by an equation which is derived from Fick's law, because the equation by Fick's law is similar to that of Langmuir's adsorption theory. Therefore, the adsorption process in non-steady state was discussed, based on the assumption that water molecules create a new secondary internal surface as the water adsorption proceeds. That is, the process of water adsorption was regarded as an auto-catalyzed reaction. Additionally, the effect of the ultra-structure of wood was also considered. Consequently, a rate equation of adsorption and an adsorption equation could be theoretically obtained which satisfactorily represented the process of water adsorption.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00195283
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Thermal degradation of polyesters by simultaneous TG-DTA/FT-IR analysis (1992)
    Springer
    Journal of thermal analysis and calorimetry 38 (1992), S. 1891-1900 
    Details
    ISSN: 1572-8943
    Keywords: polymers ; TG-DTA/FT-IR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wird ein kombiniertes System aus TG-DTA und FT-IR beschrieben. Mit dieser simultanen TG-DTA/FT-IR-Technik wurden spektroskopische und Massenverlustangaben über die thermische Zersetzung technisch wichtiger Polyester, namentlich von Poly(ethylenterephthalat) (PET) und Poly(Butylenterephthalat) (PBT) ermittelt. Die aus PET freigesetzten Gase waren Benzoesäure, Kohlendioxid und Kohlenmonoxid, die aus PBT freigesetzten Gase hingegen Terephthalsäureester und Benzoesäureester.
    Notes: Abstract A combination system of thermogravimetric/differential thermal analysis (TG-DTA) and Fourier-transform infrared absorption spectroscopy (FT-IR) was described. This simultaneous TG-DTA/FT-IR technique gave spectroscopic and weight loss information about the thermal degradation process of engineering polyesters; poly(ethylene terephthalate)(PET) and poly(butylene terephthalate)(PBT). The evolved gases from PET were benzoic acid, carbon dioxide and carbon monoxide, while those from PBT were terephthalic acid esters and benzoic acid esters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01974683
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Sensory nerve conduction velocities in the cutaneous afferents of the ulnar and peroneal nerves of the dog: Tissue temperature-dependent reference ranges (1990)
    Springer
    Veterinary research communications 14 (1990), S. 147-156 
    Details
    ISSN: 1573-7446
    Keywords: dog ; peroneal nerve ; sensory nerve conduction velocity ; tissue temperature ; ulnar nerve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Sensory nerve conduction velocities in the cutaneous afferents of the ulnar and peroneal nerves of the neurologically normal adult dog were determined by stimulation at stimulus intensities of 15, 20 and 25 V through subcutaneously placed electrodes and by the averaged evoked response technique. Stimulus intensities of 15 V for the ulnar nerve and 20 V for the peroneal nerve were adequate to measure the sensory nerve conduction velocities of these nerves. A linear relationship was seen between sensory nerve conduction velocity (y in m/s) and tissue temperature (x in °C) and the regression equations were expressed as follows: y=1.6x+12.3 at a stimulus intensity of 15 V for the ulnar nerve and y=2.0x−10.6 at 20 V for the peroneal nerve, respectively. The 95% confidence limits of the regressions of the sensory nerve conduction velocities against tissue temperature, obtained at a stimulus intensity of 15 V for the ulnar nerve or at a stimulus intensity of 20 V for the peroneal nerve, were proposed for a tissue temperature-dependent reference range to enable the clinician to evaluate graphically the sensory nerve conduction velocity in a diseased dog.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00346555
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  • 14
    Electronic Resource
    Electronic Resource
    Determination of structural elements of the L2/HNK-1 carbohydrate epitope required for its function (1994)
    Springer
    Glycoconjugate journal 11 (1994), S. 345-352 
    Details
    ISSN: 1573-4986
    Keywords: L2/HNK-1 carbohydrate ; antibody recognition ; laminin binding ; neural migration and process outgrowth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The L2/HNK-1 carbohydrate epitope has been shown to carry an unusual 3′-sulfoglucuronic acid linkedO-glycosidically through a neolactosyl-type back bone to a ceramide residue. Using monoclonal antibodies, the same or a closely related epitope has also been detectedN-glycosidically linked to glycoproteins, amongst them several neural cell adhesion molecules. We used synthetic glycolipids carrying sulfated or non-sulfated glucuronic acid attached to ceramide through glycans of different length to show that not only the sulfated glucuronic acid but also the neolactosyl-type backbone is essential for the recognition of the L2/HNK-1 carbohydrate by a monoclonal antibody, its binding to laminin and its role in neural cell migration and outgrowth of processes from neurons and astrocytes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00731208
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    Paper (German National Licenses)
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