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- Massimo Bottini, Shane Bruckner, +5 authors Tomas Mustelin
- Toxicology letters
- 2006

Carbon nanotubes are a man-made form of carbon that did not exist in our environment until very recently. Due to their unique chemical, physical, optical, and magnetic properties, carbon nanotubes have found many uses in industrial products and in the field of nanotechnology, including in nanomedicine. However, very little is yet known about the toxicity of… (More)

- Delia Cavallo, Carla Fanizza, +10 authors Sergio Iavicoli
- Journal of applied toxicology : JAT
- 2012

The increasing use of nanomaterials in consumer products highlights the importance of understanding their potential toxic effects. We evaluated cytotoxic and genotoxic/oxidative effects induced by commercial multi-walled carbon nanotubes (MWCNTs) on human lung epithelial (A549) cells treated with 5, 10, 40 and 100 µg ml⁻¹ for different exposure times.… (More)

- Cinzia Lucia Ursini, Delia Cavallo, +7 authors Sergio Iavicoli
- Toxicology in vitro : an international journal…
- 2012

Chemical functionalization extends CNT applications conferring them new functions, but could modify their toxicity. We compared cytotoxicity and genotoxic/oxidative effects of -OH functionalized and pristine MWCNTs to evaluated the influence of the functionalization exposing A549 cells to 1-40μg/ml of both MWCNTs for 2, 4 and 24h. Cytotoxicity was evaluated… (More)

These lectures provide a pedagogical, introductory review of the so-called Attractor Mechanism (AM) at work in two different 4-dimensional frameworks: extremal black holes in N = 2 supergravity and N = 1 flux compactifications. In the first case, AM determines the stabilization of scalars at the black hole event horizon purely in terms of the electric and… (More)

- S. Bellucci, A. Marrani
- 2008

We consider the Attractor Equations of particular N = 2, d = 4 supergravity models whose vector multiplets' scalar manifold is endowed with homogeneous symmetric cubic special Kähler geometry, namely of the so-called st 2 and stu models. In this framework, we derive explicit expressions for the critical moduli corresponding to non-BPS attractors with… (More)

- S Bellucci, P.-Y Casteill, J F Morales, C Sochichiu
- 2008

We derive the coherent state representation of the integrable spin chain Hamil-tonian with symmetry group SL(2,R). By passing to the continuum limit, we find a spin chain sigma model describing a string moving on the hyperboloid SL(2,R)/U(1). The same sigma model is found by considering strings rotating with large angular momentum in AdS 5 × S 5. The… (More)

- S Bellucci, P.-Y Casteill, J F Morales, C Sochichiu
- 2008

We study spin models underlying the non-planar dynamics of N = 4 SYM gauge theory. In particular, we derive the non-local spin chain Hamiltonian generating dilatations in the gauge theory at leading order in g 2 YM N but exact in 1 N. States in the spin chain are characterized by a spin-configuration and a linking variable describing how sites in the chain… (More)

- S Bellucci, P Y Casteill, J F Morales, C Sochichiu
- 2008

We review the spin bit model describing anomalous dimensions of the operators of Super Yang–Mills theory. We concentrate here on the scalar sector. In the limit of large N this model coincides with integrable spin chain while at finite N it has nontrivial chain splitting and joining interaction.

- Stefano Bellucci, Sergey Krivonos
- 2008

- S Bellucci, I L Buchbinder, V A Krykhtin
- 2003

We consider the one-loop renormalization of dimension four composite operators and the energy-momentum tensor in noncommutative φ 4 scalar field theory. Proper operator bases are constructed and it is proved that the bare composite operators are expressed via renormalized ones, with the help of a mixing matrix, whose explicit form is calculated. The… (More)