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  • 2000-2004  (22)
  • 1995-1999
  • 1945-1949
  • 1940-1944
  • 1930-1934  (13)
  • 2004  (22)
  • 1931  (13)
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Materialart
Erscheinungszeitraum
  • 2000-2004  (22)
  • 1995-1999
  • 1945-1949
  • 1940-1944
  • 1930-1934  (13)
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Polymorphism of the Helicobacter pylori feoB Gene in Korea: a Possible Relation with Iron-Deficiency Anemia? (2004)
    Oxford, UK : Blackwell Science Ltd
    Helicobacter 9 (2004), S. 0 
    Details
    ISSN: 1523-5378
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: Background.  Helicobacter pylori is a causative agent of gastritis, and H. pylori infection is thought to be correlated with iron-deficiency anemia (IDA) at puberty. The H. pylori feoB gene product, a high-affinity ferrous iron transporter, plays a central role in iron acquisition and virulence. This study was undertaken to analyze H. pylori feoB status according to clinical data, including antral gastritis with or without IDA.Methods.  Fourteen H. pylori-positive patients aged from 10 to 18 years were categorized into subgroups based on the presence or absence of IDA. Eight patients were diagnosed as having IDA; the other six showed normal hematological findings. Genomic DNA was isolated from H. pylori cultured from each gastric biopsy specimen. Five sets of primers were used for the PCR amplification of the feoB gene. Linking and sequencing of PCR products generated the feoB region, which was 1.93 kb in size. The feoB gene sequences of H. pylori J99 and 26695 were compared with the clinical strains, and the sequences of feoB regions in the IDA (+) and (–) groups were compared.Results.  Sequence analysis of the complete coding region of the feoB gene revealed 16 sites of polymorphism or mutation. Among these, three polymorphisms (E/T254A, I263V, and K511Q) were indigenous to the Korean clinical strains. Although statistically significant differences were observed at four sites (K127T, A273S/P, I438V and I441T) between IDA (+) and (–), the number of specimens was too low to assess the significance of the differences.Conclusion.  The four polymorphisms of the feoB gene observed appear to be related to the clinical phenotype of IDA, but the relation is unclear because of the small number of strains studied. Further studies are required to confirm a correlation between IDA and H. pylori infection.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1083-4389.2004.00239.x
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  • 2
    Digitale Medien
    Digitale Medien
    R-Curve Behavior of Si3N4–BN Composites (2004)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 87 (2004), S. 0 
    Details
    ISSN: 1551-2916
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Maschinenbau , Physik
    Notizen: R-curve behavior of Si3N4–BN composites and monolithic Si3N4 for comparison was investigated. Si3N4–BN composites showed a slowly rising R-curve behavior in contrast with a steep R-curve of monolithic Si3N4. BN platelets in the composites seem to decrease the crack bridging effects of rod-shaped Si3N4 grains for small cracks, but enhanced the toughness for long cracks as they increased the crack bridging scale. Therefore, fracture toughness of the composites was relatively low for the small cracks, but it increased significantly to ∼8 MPa·m1/2 when the crack grew longer than 700 μm, becoming even higher than that of the monolithic Si3N4.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1151-2916.2004.tb07740.x
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  • 3
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 1187-1193 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01354a055
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  • 4
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 1616-1625 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01355a071
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  • 5
    Digitale Medien
    Digitale Medien
    Angioma serpiginosum with retinal involvement in a male: a possible aetiological role of continuous cold exposure (2004)
    Oxford, UK : Blackwell Publishing Ltd.
    Journal of the European Academy of Dermatology and Venereology 18 (2004), S. 0 
    Details
    ISSN: 1468-3083
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1468-3083.2004.00899.x
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  • 6
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 385-389 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01352a058
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  • 7
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 814-818 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01353a057
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  • 8
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 2429-2434 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01357a059
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  • 9
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 2013-2023 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01356a061
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  • 10
    Digitale Medien
    Digitale Medien
    NEW BOOKS (1931)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 53 (1931), S. 2811-2818 
    Details
    ISSN: 1520-5126
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ja01358a057
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