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  • Lower uterine segment  (2)
  • Binding isotherms  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Examination of previous caesarean section scars by ultrasound (1988)
    Springer
    Archives of gynecology and obstetrics 243 (1988), S. 221-224 
    Details
    ISSN: 1432-0711
    Schlagwort(e): Vaginal delivery ; Caesarean section ; Previous caesarean section scar ; Ultrasonography ; Lower uterine segment
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We examined 84 lower segment caesarean section scars by ultrasonography near term. Seventy scars showed good healing with a thickness of the lower uterine segment of more than 3 mm; 14 scars showed poor healing with a thickness of less than 2 mm and loss of continuity. Among 70 patients with good healing, 24 patients delivered vaginally but the remaining 46 patients have had repeat caesarean sections for other obstetric indications. Intraoperative findings in these 46 patients were as follows: Grade I (no thinning of the lower uterine segment), 42; Grade II (thinning and loss of continuity of the lower uterine segment but fetal hair not visible), 4; Grade III (thinning of the lower uterine segment and fetal hair visible), 0. Fourteen patients with poor healing had repeat caesarean sections. Intraoperative findings in these 14 patients were as follows: Grade I, 0; Grade II, 9; Grade III, 5. These results indicate that ultrasound examination detect thinning of the lower uterine segment and may help to determine management.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00932271
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  • 2
    Digitale Medien
    Digitale Medien
    Ultrasound examination of caesarean section scars during pregnancy (1991)
    Springer
    Archives of gynecology and obstetrics 248 (1991), S. 129-138 
    Details
    ISSN: 1432-0711
    Schlagwort(e): Ultrasound ; Caesarean section scar ; Conventional method ; New method ; Lower uterine segment
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Two hundred and sixteen transverse caesarean section scars were examined sonographically near term by a conventional method (175 scars) and a new method (41 scars). The new method consisted of obtaining a transabdominal longitudinal scan by the conventional method and also by a 3M conductor, a transabdominal frontal scan to give a surface view of the scar, and transperineal and transvaginal longitudinal scans. The new method was used from 16 weeks of gestation onwards. Of 41 scars scanned by the new method, 31 showed good healing, being more than 2 mm in thickness throughout; 10 scars showed poor healing with a thickness of less than 2 mm and loss of continuity. Of 31 patients with good healing, 8 delivered vaginally and the remaining 23 patients had repeat caesarean sections for other obstetric indications. All patients with ultrasound evidence of poor healing had repeat caesarean sections. At operation the thickness of the lower uterine segment was measured with ophthalmic calipers. There were 4 false negative results (4/83: 4.8%) and 1 false positive result (1/43: 2.3%) with conventional ultrasound and no false positives or false negatives with the new method.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02390090
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  • 3
    Digitale Medien
    Digitale Medien
    Binding characteristics of ionic surfactants with human hair (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 798-802 
    Details
    ISSN: 1435-1536
    Schlagwort(e): Binding isotherms ; ionic surfactants ; human hair ; thermodynamic parameReferences
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Maschinenbau
    Notizen: Abstract Binding isotherms of two types of ionic surfactants, CmH2m +1SO4Na (m = 8,10,12) and CnH2n + 1N+(CH3)3C1 (n=10, 12), to human hair in aqueous solutions were examined to clarify effects of hydrophobic and electrostatic interaction of ionic surfactants with hair. The binding isotherms of anionic surfactants showed cooperativity with discontinuously increasing shapes, while the binding isotherms of cationic surfactants showed a Langmuir-type, regardless of the difference of a hair condition. The calculated free energy change (— ΔG@#@) for binding, obtained from Klotz' plots, suggests that the binding processes are governed mainly by a hydrophobic interaction, and bound surfactants probably expose their alkyl chains to the aqueous phase, since no-ΔG was observed with the increase of m or n and values of enthalpy change(ΔH) were positive or zero.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01500756
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