Such a method, which is called phase space reconstruction, was successfully applied for the classification of acoustic emission waveforms propagating in more or less complex materials such as granite and concrete. Laboratory tests were carried out in order to collect Cilengitide numerous AE waveforms from various controlled acoustic sources. Then, each signal was processed to extract a reconstructed attractor from which the correlation dimension was computed. The first results of this research show that the correlation dimension

assessed after phase space reconstruction is very relevant and robust for classifying AE signals. These promising results may be explained by the fact that the totality of the signal is used to achieve classifying information. Moreover, due to the self-similar nature of attractors, the correlation dimension, and thus a correlation dimension-based classification approach, is theoretically MAPK Inhibitor Library insensitive to signal absorption. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3169601]“
“The rheological characterization and morphological analysis of nylon 1212 toughened with a maleated triblock copolymer styrene-b-(ethylene-co-butylene)-b-styrene (SEBS-g-MA) elastomer were carried out. We found that the critical shear strain

of nylon 1212 was higher than that of virgin SEBS-g-MA and the plateau modulus of the blends in the curves of a dynamic strain sweep test was larger than those of the virgin components. All of the curves of a dynamic frequency sweep test showed a second plateau in the low-frequency region, except those of nylon 1212 and the blend containing 10 wt % SEBS-g-MA. Furthermore, the positive deviation in the plots of G’ versus blend composition demonstrated that the blends were still immiscible, although the graft reaction improved the compatibility of the blends. According to the theory of phase transition, the phase-inversion point was predicted to be about 50 wt % SEBS-g-MA, which corresponded to the morphology Staurosporine analysis. Additionally, the

yield stress behaviors and long-time relaxation behaviors of the blends were investigated. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 112: 953-962, 2009″
“The infection of the feline T-lymphocyte cell line FeT-J with the feline immunodeficiency virus (FIV) Petaluma strain led to the establishment of nonvirus-producing cells. One clone (C15) obtained by limiting dilution was found to express FIV in response to chemical inducers of retroviruses. The chemical treatment of C15 cells led to not only FIV protein synthesis but also an augmentation of viral production. Examination of the C15 cell derivatives obtained by recloning revealed that 10-40% of treated cells constitutively expressed FIV antigens, whereas 100% with expressed FIV antigen in response to the inducer.