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Far infrared response of thin film Bi2Sr2CaCu2O8 using a free electron laser (1992)

Prettl, W. ; Lengfellner, H. ; Kaminski, J. P. ; [et al.]

Springer

International journal of infrared and millimeter waves 13 (1992), S. 1659-1666

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ISSN: 1572-9559

Keywords: High-Tc superconductors ; FIR-detection ; free-electronlaser

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The far infrared response of granular thin-film Bi2Sr2CaCu2O8 superconductor has been investigated using long (≈5 μs) but sharply truncated free electron laser pulses in the frequency range between 50 cm−1 and 125 cm−1. Under constant current bias, a fast response and a slow bolometric signal component could be identified in this energy range, which is below the BCS energy gap (≈ 200 cm−1). Measurements of the power dependences of the signal voltages showed that both the fast and the thermal responses are consistent with the predictions of the resistively shunted Josephson junction model.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01009243

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Kinetic effects of adriamycin and bleomycin on two osteosarcoma models (1988)

Bell, D. F. ; Bell, R. S. ; Mankin, H. J. ; [et al.]

Hoboken, NJ [u.a.] : Wiley-Blackwell

Journal of Orthopaedic Research 6 (1988), S. 51-57

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ISSN: 0736-0266

Keywords: Osteosarcoma ; Chemotherapy ; Flow cytometry ; Life and Medical Sciences

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Medicine

Notes: Although chemotherapeutic drugs are frequently administered to patient with osteosarcoma, there has been little research into the effect of cytotoxic drugs on osteosarcoma cell biology. The effect of two drugs (Adriamycin and bleomycin) on cell cycle kinetics was investigated in vitro in an established line of human osteosarcoma cells and in vivo using the Dunn osteosarcoma model. The cell cycle changes were consistent with G2 arrest for both drugs in vivo and in vitro. The alteration in cell cycle distribution was correlated with inhibition of 3H-thymidine incorporation in vitro. In vivo, the greater change in cell cycle distribution caused by Adriamycin was reflected in the increased inhibition of tumor growth found with this drug.

Additional Material: 10 Ill.