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  • 1990-1994  (4)
  • Computational Chemistry and Molecular Modeling  (2)
  • ABO blood groups  (1)
  • Anal incontinence  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Relationship between clinical symptoms of anal incontinence and the results of anorectal manometry (1992)
    Springer
    Diseases of the colon & rectum 35 (1992), S. 847-849 
    Details
    ISSN: 1530-0358
    Keywords: Anal incontinence ; Clinical presentation ; Anal motility ; Anorectal manometry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The aim of this work was to analyze clinical symptoms in light of anorectal manometry results. We compared the frequency of clinical symptoms in relation with the presence or absence of functional anomalies. Using this methodology, the following relationships may be suggested: the need to wear a pad, with a decreased resting pressure at the upper part of the anal canal; the inability to delay rectal evacuation, with decreased anal voluntary contraction; interference of incontinence with social activities, with decreased duration of anal voluntary contraction; urinary symptoms, with an increased threshold volume of rectal distention needed to elicit the rectoanal inhibitory reflex; and complete rectal prolapse, with reduced length of the anal canal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02047871
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Association between gastrointestinal tract carriage ofCandida, blood group O, and nonsecretion of blood group antigens in patients with peptic ulcer (1993)
    Springer
    Digestive diseases and sciences 38 (1993), S. 1453-1458 
    Details
    ISSN: 1573-2568
    Keywords: peptic ulcer disease ; Candida ; ABO blood groups ; nonsecretors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Of 112 patients with peptic ulcer disease examined for oral carriage ofCandida, 66 (59%) were carriers.Candida carriage was associated with blood group O (P〈0.05) and, independently, with nonsecretion of blood group antigens (P〈0.01). For each subject, the presence or absence of yeasts was found to be a constant characteristic, and only among patients positive forCandida was blood group O or nonsecretion more frequent than expected in the general population. The quantity of yeasts isolated was significantly greater in patients than in normal subjects (P〈0.002), as was the frequency of carriage in the patient population (59% vs 32%). This increase was not associated with treatment with H2-receptor antagonists. The results of paired oral and gastroduodenal aspirate cultures suggested that identifyingCandida in the oral cavity was a good indicator of the presence of yeasts elsewhere in the gastrointestinal tract. Mechanisms whereby overgrowth ofCandida in the upper gastrointestinal tract might contribute to the inflammatory background of peptic ulcer disease are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01308603
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Chirality and spin density: Ab initio and density functional approaches (1993)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 45 (1993), S. 649-663 
    Details
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The spin distribution in a stable nitroxide biradical that shows ferromagnetic interactions in the solid phase has been studied at three levels of theory: First, at the UHF level; then, including correlation effects in UMP2 calculations; and finally, the results are compared with the spin density obtained using the local density functional (LDF) approximation. It is shown that LDF spin densities are closer to UMP2 than to UHF predictions; the difference between the UHF and the (UMP2, LDF) results points to a redistribution of the spin repartition between N and O due to electronic correlation. For planar conformations of the NO group, there is symmetric distribution (D2d) of the spin density on the adamantane skeleton. For nonplanar nitroxides, the molecule is chiral (C2), which results in a breakdown of the spin transmission on part of the adamantane cage. © 1993 John Wiley & Sons, Inc.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560450614
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Theoretical investigation of the enantioselective hydrogenation of α-ketoesters over pt/alumina modified with cinchonidine (1994)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 52 (1994), S. 191-197 
    Details
    ISSN: 0020-7608
    Keywords: Computational Chemistry and Molecular Modeling ; Atomic, Molecular and Optical Physics
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Enantioselective hydrogenation of α-ketoesters with cinchona-modified platinum catalysts has been studied theoretically in order to rationalize the interaction between the chiral modifier and the substrate. The structure of the probable transition complex has been calculated for the system methyl pyruvate (substrate)-cinchonidine (modifier) using quantum chemistry techniques at both ab initio and semiempirical levels and molecular mechanics. The calculations indicate that crucial interaction occurs via hydrogen bonding of the quinuclidine nitrogen and the oxygen of the α-carbonyl moiety of methyl pyruvate and confirm earlier experimental evidence that the quinuclidine nitrogen of the cinchonidine is involved in the interaction leading to enantiodifferentiation. The resulting complex, which resembles to a half-hydrogenated state of the substrate, is shown to be a possible transition state for the enantioselective hydrogenation of α-ketoesters. © 1994 John Wiley & Sons, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/qua.560520119
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    Paper (German National Licenses)
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