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Large-scale procedure for the purification of fibronectin domains

Borsi, L. ; Castellani, P. ; Balza, E. ; [et al.]

Amsterdam : Elsevier

Analytical Biochemistry 155 (1986), S. 335-345

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ISSN: 0003-2697

Keywords: chromatography ; fibronectin structure ; hydroxyapatite ; proteins ; purification ; thermolysin

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1016/0003-2697(86)90443-4

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a.c. susceptibility of a YBCO single crystal in an extended frequency range interpreted by numerical solution of the continuity equation for the magnetic field (1993)

Calzona, V. ; Cimberle, M. R. ; Ferdeghini, C. ; [et al.]

Springer

Il nuovo cimento della Società Italiana di Fisica 15 (1993), S. 511-518

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ISSN: 0392-6737

Keywords: Flux pinning, flux motion, fluxon-defect interactions ; Numerical simulation ; solution of equations

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Summary a.c. susceptibility measurements on a YBCO single crystal in an extended range of frequency and applied magnetic fields are presented. The dissipation phenomena shown by these measurements are interpreted inside the framework of the thermally activated flux motion theory developed for low-temperature superconductors in early '60. For this purpose the continuity equation for the magnetic field inside the sample is solved numerically, avoiding to usea priori the standard approximations of this theory: thermally activated flux creep and thermally assisted flux flow. The whole set of a.c. susceptibility measurements, performed in a wide range of the parameters, can be fitted with good agreement between the experimental and theoretical data.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02456934

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Partial melting of bulk NdBa2Cu3O7−δ (1994)

Marella, M. ; Tomaselli, M. ; Meregalli, L. ; [et al.]

Springer

Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1723-1728

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ISSN: 0392-6737

Keywords: Superconducting materials ; Conference proceedings

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Summary Two procedures of partial melting of bulk NdBa2Cu3O7−δ, in air and in reduced oxygen pressure, were developed. When the treatment was carried out in air, poor superconducting properties were observed. On the contrary, when the treatment was carried inP O 2=1.3 mbar, good properties were obtained, withT conset=93 K and 100% shielding at lower temperatures. Near full density (2.5×2.5×28) mm3 Nd1.07Ba1.89Cu3.04O7−δ bars, with domains extending in the mm size range, were obtained.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02462166

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Transport properties in HTSC materials in the mixed state (1994)

Calzona, V. ; Cimberle, M. R. ; Ferdeghini, C. ; [et al.]

Springer

Il nuovo cimento della Società Italiana di Fisica 16 (1994), S. 1827-1833

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ISSN: 0392-6737

Keywords: Flux pinning, flux motion, fluxon-defect interactions ; Conference proceedings

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Summary We discuss the resistivity, the Hall, the Seebeck and the Nerst effect in the mixed state taking the motion of Abrikosov and Josephson vortices into account. Measurements on a Bi(2223) tape point out how the contribution of Josephson vortices to the resistivity prevails at low temperatures while the thermomagnetic effects are, in a first approximation, due to the motion of Abrikosov vortices.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02462181

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