M. Fratini

Followers

Following

Co-authors

Public Views

Nicole Herbots

Arizona State University

Waltraud M. Kriven

University of Illinois at Urbana-Champaign

Virginie Boucher

CSIC (Consejo Superior de Investigaciones Científicas-Spanish National Research Council)

Shiv Poojan Patel

Inter University Accelerator Centre

Yoshinari Abe

Tokyo Denki University

Khaled Dine

University of Dr moulay taher

Nijad Kabbara

National Council for Scientific Research

Mehdi Afshari-Bavil

BeiJing Information and Science University

Franz Giessibl

University of Regensburg

E-wen HUANG

National Chiao Tung University

Interests

Uploads

Papers by M. Fratini

[Guidelines: research in the web, critical assessment, clinical application]

Recenti progressi in medicina, 1999

$Research paper thumbnail of [Therapy of refractory rheumatoid arthritis. Cyclosporin and methotrexate combination]$

[Therapy of refractory rheumatoid arthritis. Cyclosporin and methotrexate combination]

Recenti progressi in medicina, 1998

Rheumatoid arthritis (RA) is a chronic multisystemic disease affecting mainly the joints and char... more Rheumatoid arthritis (RA) is a chronic multisystemic disease affecting mainly the joints and characterised by a poor prognosis. In a four month open study we evaluated the efficacy and tolerability of a combination therapy in 14 patients with active and refractory RA (non responsive to MTX or CsA monotherapy). After three pulses of methyl-prednisolone (125 mg/die i.v. for 3 days), at day the 4 patients received methotrexate (MTX 15/mg/week p.os) and cyclosporine (CsA 3 mg/kg/day p.os). At the end of treatment period, patients had a statistically significant improvement in the tender-joint count (Ritchie Index) in the swollen-joint count and in the pain as recorded on a 100-mm visual-analogue scale. Following the criteria of the American College of Rheumatology for response to treatment in RA, 6 patients (60%) met these criteria, whereas 2 had a worsening. We could not detect any clear difference in serological parameters (ESR, CRP and Hb levels) between the beginning and the end of ...

$Research paper thumbnail of Imaging tissue regeneration/degeneration by combined X-ray micro-diffraction and phase contrast micro-tomography$

Imaging tissue regeneration/degeneration by combined X-ray micro-diffraction and phase contrast micro-tomography

Evading Quantum De-coherence in Living Matter by Feshbach Resonance

Feshbach resonance and mesoscopic phase separation near a quantum critical point in multiband FeAs-based superconductors

Superconductor Science and Technology, 2009

High T c superconductivity in FeAs-based (pnictides) multilayers, evading temperature decoherence... more High T c superconductivity in FeAs-based (pnictides) multilayers, evading temperature decoherence effects in a quantum condensate, is assigned to a Feshbach resonance (called also shape resonance) in the exchange-like interband pairing. The resonance is switched on by tuning the chemical potential at an electronic topological transition (ETT) near a band edge, where the Fermi surface topology of one of the subbands changes from 1D to 2D topology. We show that the tuning is realized by changing i) the misfit strain between the superconducting planes and the spacers ii) the charge density and iii) the disorder. The system is at the verge of a catastrophe i.e. near a structural and magnetic phase transition associated with the stripes (analogous to the 1/8 stripe phase in cuprates) order to disorder phase transition. Fine tuning of both the chemical potential and the disorder pushes the critical temperature T s of this phase transition to zero giving a quantum critical point. Here the quantum lattice and magnetic fluctuations promote the Feshbach resonance of the exchange-like anisotropic pairing. This superconducting phase that resists to the attacks of temperature is shown to be controlled by the interplay of the hopping energy between stripes and the quantum fluctuations. The superconducting gaps in the multiple Fermi surface spots reported by the recent ARPES experiment of D. V. Evtushinsky et al. arXiv:0809.4455 are shown to support the Feshbach scenario.

M. Fratini

Uploads

Papers by M. Fratini

Log In