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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of low temperature physics 105 (1996), S. 1629-1634 
    ISSN: 1573-7357
    Keywords: 63.20 K ; 74.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Single crystalline specimens of RNi2B2C (R=Y, La) and Y(Ni.7Co.3)2B2C (non-superconducting reference) have been isolated from polycrystalline samples and successfully orientated. All four observable Raman peaks could be measured and unambiguously be attributed to vibrations of B and Ni atoms. Most important, we can show that a broadening of the B-A1g mode also occurs in non-superconducting reference samples and should therefore not be taken as an evidence for a dominant role of the B-A1g mode in the pairing interaction.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1335
    Keywords: Key words Secondary leukemia ; High-dose chemotherapy ; Autologous bone marrow transplantation ; Peripheral stem cell transplantation ; Etoposide ; Etoposide-related leukemia ; Secondary myelodysplastic syndrome ; Allogenic bone-marrow transplantation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Secondary acute myeloid leukemia (s-AML) and secondary myelodysplastic syndrome (s-MDS) probably represent the worst possible long-term complications of cancer therapy in patients originally cured of their primary malignancy. The frequency and type of s-AML and s-MDS are reviewed for patients treated with standard and/or high-dose chemotherapy for Hodgkin's disease, non-Hodgkin's lymphoma (NHL), and breast or testicular cancer. Patients treated for Hodgkin's disease, have a 20- to 40-fold increased risk of developing s-AML, this risk increasing with the number of mechlorethamine-containing cycles given as well as following splenectomy and in patients more than 40–50 years of age. Generally, patients with NHL, breast or testicular cancer experience a lower, 2- to 15-fold, risk of developing s-AML. Epipodophyllotoxins appear to be the most important factor for s-AML in patients treated for testicular cancer. Doses of 2g/m2 or more are associated with an increased risk of s-AML and, with these high doses, a cumulative incidence of 2%–3% at 5 years is observed. Adjuvant cyclophosphomide, methobrexate, 5-Fu therapy in breast cancer patients does not appear to increase risk significantly as compared to the general population. The extent of the leukemogenic potential of anthracyclines remains to be defined. NHL patients receiving mechlorethamine, prednimustine or long-term maintenance therapy are also at an increased risk of s-AML. A considerably increased risk of developing AML, with a cumulative incidence of approximately 9% at 5 years, has been observed following allogenic bone marrow transplantation (ABMT) or peripheral stem cell transplantation (PBSCT) in patients with NHL. It is likely that the increased risk of s-AML/s-MDS following high-dose chemotherapy with ABMT or PBSCT is related to prior treatment rather than to high-dose chemotherapy itself. However, this issue remains to be conclusively addressed. s-AML or s-MDS rarely develops after allogenic bone marrow transplantation. s-AML and s-MDS increasingly represent a problem in modern cancer therapy because of better treatment strategies, which result in improved cure rates. Patients who receive chemotherapy must be informed about the potential risk of developing s-AML or s-MDS. Future studies should include a follow-up long enough to record the occurrence of all s-AML/s-MDS and all potential influencing factors reliably. These data would enable risk factors to be defined and risk/benefit analyses to be carried out, allowing the correct assessment of current and future therapy strategies.
    Type of Medium: Electronic Resource
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