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  • 1995-1999  (4)
  • 1985-1989  (4)
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Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Photoassisted hydrogen production using visible light and coprecipitated zinc sulfide.cntdot.cadmium sulfide without a noble metal (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 732-734 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100251a002
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Silica-supported ZnS.cntdot.CdS mixed semiconductor catalysts for photogeneration of hydrogen (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 3828-3833 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100264a012
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Cyclodextrin homo- and hetero-dimers as enzyme models (1996)
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 25 (1996), S. 133-136 
    Details
    ISSN: 1573-1111
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Three kinds of dimers (one homo-dimer of β-CD and two kinds of hetero-dimers of α-CCD and β-CD) were synthesized as artificial hydrolases. The dimers were prepared by the condensation of 6-deoxy-6-(l-histidylamino)-cyclodextrin and 6 (carboxymethylthio)-6-deoxycyclodextrin with dicyclohexylcarbodiimide. The enzyme-like activities were studied by measuring the rates for the cleavage reaction of some kinds of nitrophenyl alkanoates. They showed large acceleration ability and substrate specificity for the acyl chain length of the substrate.As the acyl chain length of the substrate was longer, the transition state was more stabilized by the dimers. The only homo-dimer showed allosteric behavior with 1.8 Hill constant, whenp-nitrophenyl methoxyethoxyethoxyacetate was used for the substrate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01041553
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Histopathological changes in iridocorneal angle of inherited glaucoma in rabbits (1999)
    Springer
    Graefe's archive for clinical and experimental ophthalmology 237 (1999), S. 654-660 
    Details
    ISSN: 1435-702X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  · Background: We examined morphologically the angular region of eyes affected by inherited glaucoma in rabbits genetically developed by crossbreeding in order to investigate the etiologic changes in the iridocorneal angle and to establish whether this strain of rabbit is a suitable animal model of goniodysgenetic glaucoma in humans. · Methods: The angular regions of both normal and glaucomatous eyes from four rabbits having unilateral inherited glaucoma were observed with light and electron microscopy. · Results: In the glaucomatous eyes angular region, the aqueous plexus corresponding to Schlemm’s canal in humans was open and located far peripherally to the peripheral margin of the anterior chamber angle, although the plexus of one glaucomatous eye was poorly developed with a small lumen. In the angular meshwork, which corresponds to the trabecular meshwork in humans, a thick abnormal tissue with round cells embedded in the extracellular matrix was located just beneath the plexus. A large amount of extracellular matrix of basal lamina-like material was observed in the thick tissue. In the normal eyes, the angular region consisted of well-developed trabecular sheets with neither a thick tissue nor accumulations of extracellular matrix in the angular meshwork. · Conclusion: The findings observed in the glaucomatous eyes are much the same as those observed in goniodysgenetic glaucoma in humans, suggesting that this strain of inherited glaucoma rabbits is a suitable animal model of goniodysgenetic glaucoma in humans. The present study also supports the hypothesis that the presence of a thick subcanalicular tissue due to maldevelopment of the iridocorneal angle is one of the main causes of this type of glaucoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004170050293
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Heavy ion mutagenesis: Linear energy transfer effects and genetic linkage (1995)
    Springer
    Radiation and environmental biophysics 34 (1995), S. 73-78 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract We have characterized a series of 69 independent mutants at the endogenoushprt locus of human TK6 lymphoblasts and over 200 independent S 1-deficient mutants of the humanxhamster hybrid cell line AL arising spontaneously or following low-fluence exposures to densely ionizing Fe ions (600 MeV/amu, linear energy transfer = 190 keV/µm). We find that large deletions are common. The entirehprt gene (〉44 kb) was missing in 19/39 Fe-induced mutants, while only 2/30 spontaneous mutants lost the entirehprt coding sequence. When the gene of interest (S1 locus = M1C1 gene) is located on a nonessential human chromosome 11, multilocus deletions of several million base pairs are observed frequently. The S1 mutation frequency is more than 50-fold greater than the frequency ofhprt mutants in the same cells. Taken together, these results suggest that low-fluence exposures to Fe ions are often cytotoxic due to their ability to create multilocus deletions that may often include the loss of essential genes. In addition, the tumorigenic potential of these HZE heavy ions may be due to the high potential for loss of tumor suppressor genes. The relative insensitivity of thehprt locus to mutation is likely due to tight linkage to a gene that is required for viability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01275209
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Prognostic factors in giant cell tumor of bone a modified histological grading system useful as a guide to prognosis (1986)
    Springer
    Archives of orthopaedic and trauma surgery 105 (1986), S. 67-72 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary An analysis of 26 patients with giant cell tumor of bone was carried out to determine the clinical and pathological factors affecting the prognosis of the tumor, with a follow-up program of more than 3 years. The physical characteristics of the pathological features were measured objectively using an image analyzer. A significant correlation between the therapeutic procedures and recurrence of the tumor was found, but no pathological variables were significantly correlated. Excision or resection en bloc should be performed for the initial treatment of the tumor. Local recurrence could not be predicted on the basis of histological grading. Stromal cell atypia was significantly correlated with metastasis, but multinucleated giant cells bore no correlation to either recurrence or metastasis. The use of a modified histological grading system based not on variations of the stroma and giant cells but only on the atypia of mononuclear stromal cells, either malignant or classical, is recommended for the clinical assessment of the tumor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00455841
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Differential response of human and rodent cell lines to chemical inhibition of the repair of potentially lethal damage (1989)
    Springer
    Radiation and environmental biophysics 28 (1989), S. 193-202 
    Details
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Summary We have examined the effects of several classes of metabolic inhibitors on the repair of potentially lethal damage in density-inhibited cultures of two rodent and two human cell systems which differ in their growth characteristics. Aphidicolin, 1-β-d-arabinofuranosylcytosine (ara-C) and hydroxyurea showed no effect on PLD repair, whereas the effects of 9-β-d-arabinofuranosyladenine (ara-A) and 3-aminobenzamide (3-AB) were cell line dependent. For example, 3-AB suppressed PLD repair almost completely in CHO cells, but showed no inhibitory effects in human diploid fibroblasts. These results indicate that inhibitors of DNA replication and poly(ADP-ribose) synthesis are not efficient inhibitors of cellular recovery in irradiated cells and, moreover, that such effects may be cell line dependent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01211256
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Decorated pore detecting fatigue fracture origin of sintered A1203 (1996)
    Springer
    Journal of materials science 15 (1996), S. 1097-1099 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00274919
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    Paper (German National Licenses)
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