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  • Articles: DFG German National Licenses  (6)
  • 1995-1999  (6)
  • 1990-1994
  • 1997  (6)
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  • Articles: DFG German National Licenses  (6)
Material
Years
  • 1995-1999  (6)
  • 1990-1994
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    FACTORS CONTROLLING THE FATIGUE STRENGTH OF NITRIDED TITANIUM (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Fatigue & fracture of engineering materials & structures 20 (1997), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract— The factors affecting the fatigue strength of nitrided titanium were clarified. The fatigue strength depended strongly on the fracture strength of the compound layer formed on the surface by nitriding. We found a Hall-Petch relationship between the fatigue strength of nitrided titanium and the grain size. The findings indicated that the reduction in the fatigue strength by nitriding results from both the formation of the compound layer possessing low fracture strength and grain growth occurring from ordinary nitriding. Furthermore, low-temperature nitriding (620°C, 24 h) was proposed to suppress grain growth. This treatment method improved not only the wear resistance and the corrosion resistance but also the fatigue strength of titanium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.1997.tb00404.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Preliminary X-ray studies of a new crystal form of PHO4–DNA complex (1997)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 53 (1997), S. 103-104 
    Details
    ISSN: 1399-0047
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A new crystal form of PHO4 DNA-binding domain-DNA complex was obtained by the truncation of the N-terminal segment. This diffracts to a higher resolution than any forms reported previously. The present crystal belongs to orthorhombic space group P212121, with unit-cell dimensions a=53.51, b=68.30, c= 108.77 Å. The crystal contains one protein dimer-DNA complex in the asymmetric unit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S090744499601058X
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The role of granzyme B-expressing CD8-positive T cells in apoptosis of keratinocytes in lichen planus (1997)
    Springer
    Archives of dermatological research 289 (1997), S. 527-532 
    Details
    ISSN: 1432-069X
    Keywords: Key words Granzyme B ; Perforin ; Apoptosis ; Lichen planus ; Colloid body ; CD8 cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Epidermal basal cell injury with colloid body formation is a characteristic feature of lichen planus. Infiltrated cells are thought to be responsible for the epidermal injury. Ultrastructural findings of colloid bodies are typical of apoptosis. Granzymes in cytotoxic T lymphocytes are involved in apoptosis probably together with perforin. Based on this background, we analyzed the role of granzyme B in the mechanisms of epidermal injury in lichen planus. On electron microscopy, basal and suprabasal cells showed condensed chromatin and fragmented nuclei which are typical morphological features of apoptosis. Nuclei of colloid bodies were positively stained by the in situ nick end labeling technique indicating that colloid bodies are subsequently formed in the process of apoptosis. Immunohistochemical staining showed CD8-positive infiltrating cells to contain granzyme B. Cells undergoing exocytosis also contained granzyme B. By immunoelectron microscopy, granzyme B molecules were observed to be secreted from a lymphocyte to an apoptotic keratinocyte. These findings suggest that granzyme B-positive CD8 cells seem to induce apoptosis of keratinocytes in lichen planus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004030050234
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Disopyramide concentrations in human plasma and saliva: Comparison of disopyramide concentrations in saliva and plasma unbound concentrations (1997)
    Springer
    European journal of clinical pharmacology 52 (1997), S. 65-69 
    Details
    ISSN: 1432-1041
    Keywords: Key words Disopyramide ; Salivary concentration; (TDM ) therapeutic drug monitoring ; arrhythmia ; anti-arrhythmic drug
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: This study was performed to investigate whether it is possible to use saliva instead of blood usually used for therapeutic drug monitoring (TDM) of disopyramide. Methods: Six healthy male volunteers ingested 200 mg of disopyramide base, and the disopyramide concentrations in saliva and plasma (total and unbound) were determined by the HPLC. Results: Disopyramide concentration-time profiles for the saliva were nearly equal to those for the plasma unbound concentrations. A large variation for absorption time of the drug was observed among the subjects. Disopyramide concentrations (Cs) in saliva did not correlated well with plasma total concentrations (Cp), r = 0.799, but did well with unbound concentrations (Cpu), r = 0.969, for the 3–12 h period on the elimination phase. The mean ratio of disopyramide concentrations in the saliva against the plasma unbound concentrations was almost constant (1.02(0.10), CV = 9.7%) for the period. The pharmacokinetic parameters (tmax, t1/2, AUC, AUMC and MRT values) for disopyramide calculated from the saliva data were nearly equal to those from the unbound data. Conclusion: Disopyramide concentrations in saliva correlated well with plasma unbound concentrations on the elimination phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002280050250
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Immunochemical and immunohistochemical study of the 27- and 29-kDa calcium-binding proteins and related proteins in the porcine tooth germ (1997)
    Springer
    Histochemistry and cell biology 107 (1997), S. 485-494 
    Details
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  Our previous report identified 27- and 29-kDa calcium-binding proteins in porcine immature dental enamel. In this study we revealed that the N-terminal amino acid sequences of the two proteins were identical: LLANPXGXIPNLARGPAGRSRGPPG. The sequence matches a portion of the amino acid sequence of the porcine sheath protein, sheathlin. Porcine tooth germs were investigated immunochemically and immunohistochemically using specific antibodies raised against synthetic peptide that included residues 13–25 of this sequence. The affinity-purified antibodies reacted with several proteins extracted from newly formed immature enamel in immunochemical analyses, especially protein bands migrating at 62, 35–45, 29, and 27 kDa in SDS-polyacrylamide gels. The largest protein detected was a weak band near 70 kDa. In immunochemical analyses of proteins extracted from the inner (old) immature enamel, the antibody reacted faintly with the 27- and 29-kDa proteins. In immunohistochemical preparations, the Golgi apparatus and secretory granules of the secretory ameloblast, and the surface layer of immature enamel showed immunoreactivity. The immunoreactivity of immature enamel just beneath the secretory face of the Tomes’ process was intense. No immunoreactivity was found in the Golgi apparatus of the maturation ameloblast. These results suggest that the 70-kDa protein, whose degradation might be very fast, is the parent protein of the 27- and 29-kDa proteins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004180050136
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Experimental Detection of Canine Haemoglobin (Occult Blood) in Canine Faeces by Reversed Passive Latex Agglutination (1997)
    Springer
    Veterinary research communications 21 (1997), S. 347-353 
    Details
    ISSN: 1573-7446
    Keywords: diagnosis ; dog ; faeces ; latex agglutination ; occult blood ; serology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A reversed passive latex agglutination test (RPLA) using anti-canine haemoglobin (Hb) antibody was developed for detecting bleeding in the lower digestive organs in dogs, and its applicability as a simple test for faecal occult blood was assessed. In Ouchterlony's gel immunodiffusion test, the anti-canine Hb antibody used to sensitize the latex reacted with canine Hb but not with Hbs, plasmas or meat extracts from pigs, goats, sheep, cattle, horses or chickens, or with fish extracts. Using latex sensitized with 50 µg/mg of anti-canine Hb IgG antibody, the lowest limit of detection for canine Hb was 21 µg/ml, and the latex reacted negatively with all test specimens other than canine Hb. In an in vitro experiment with a mixture of canine faeces and erythrocytes, the antigenicity of the Hb was found to undergo only very slight changes even when the specimens were allowed to stand for 12 h at room temperature. Hb could not be detected by RPLA in any of four successive faecal samples from three experimental dogs after infusion of autologous blood (5, 3 or 1 ml) into the stomach. In 3 other experimental dogs given an infusion of autologous blood (5, 3 or 1 ml) into the ascending colon, the presence of Hb was confirmed by RPLA in all four successive faecal samples obtained from those which received 5 or 3 ml of blood and in all except that obtained following the first defecation from the animal which had received 1 ml of blood.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005812304532
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    Paper (German National Licenses)
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