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  • 1
    ISSN: 1434-601X
    Keywords: 25.85.Ge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Isomeric yield ratios of 30 fission products in 24 MeV proton-induced fission of238U were measured by the use of the ion-guide isotope separator on-line. The obtained isomeric yield ratios were converted to the angular momenta of primary fission fragments based on the statistical model. The deduced angular momenta were examined from various aspects. It is found that in general the angular momentum continuously increases with the fragment mass number including the region of symmetric mass division. However, there are some exceptions. For Sn isotopes the deduced angular momenta are quite small due to the spherical shape of the nuclear shell configuration. It is also concluded from the consideration of the charge distribution that the angular momentum of fission product scatters considerably within the narrow range of mass division. The dependence of the angular momentum on the available energy of fragments at scission point indicates that the individual fragment possesses a characteristic deformation at scission and/or the deduced angular momentum is seriously affected by the particle excitation after scission.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1437-7772
    Keywords: Key words Ovarian cancer ; High-dose chemotherapy ; Autologous bone marrow transplantation ; Prognostic factor ; Long-term follow-up
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background. The efficacy of high-dose chemotherapy (HDC) with autologous bone marrow transplantation (ABMT) was evaluated in patients with advanced or recurrent/refractory (r/r) epithelial ovarian cancer in terms of long-term results and prognostic analysis. Methods. Between 1984 and 1991, 47 patients were prescribed two courses of HDC, consisting of cyclophosphamide (1600–2400 mg/m2), adriamycin (80–100 mg/m2), and cisplatin (100–150 mg/m2) after maximal cytoreductive surgery. Prior to HDC, platinum-based chemotherapy was administered for optimal cytoreduction. Results. The 5- and 8-year overall survival (OS) rates (%) of the 47 patients were 44.7% and 40.4%, and the 5- and 8-year disease-free survival (DFS) rates (%) were 29.8% and 27.7%, respectively. The 5- and 8-year OS rates (%) by stage were: stage III, 60.0% and 52.0%; stage IV, 33.3% and 33.3%; and r/r, 20.0% and 20.0%. The 5- and 8-year DFS rates (%) by stage were: stage III, 40.0% and 36.0%; stage IV, 25.0% and 25.0%; and r/r, 10.0% and 10.0%, respectively. Significantly better long-term survival (P 〈 0.01) was obtained in the group with no residual disease or residual disease 〈0.5 cm than in the groups with residual disease of 0.5–2 cm and 〉2 cm. In the 32 stage III/IV patients, the group given two courses of 150 mg/m2 cisplatin (n = 18) showed significantly better long-term survival (P 〈 0.05) than another group given two courses of 100 or 120 mg/m2 cisplatin (n = 14). Conclusions. Administration of two courses of HDC con-taining 2400 mg/m2 cyclophosphamide, 100 mg/m2 adriamycin, and 150 mg/m2 cisplatin per course followed by ABMT appears to be a promising procedure for achieving long-term survival in patients with chemosensitive advanced or r/r epithelial ovarian cancers with no or minimal residual disease.
    Type of Medium: Electronic Resource
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