The Fall of the Angelus Novus: Beyond the Modern Game of Roots and Options

Sociology and social sciences in general have developed as part and parcel of the tension between social regulation and social emancipation that underlies the project of modernity. This tension seems to have vanished as social emancipation has become the double, rather than the opposite, of social regulation. Therefore, the reinvention of the social sciences presumes a new start for the social sciences focused on the generation of powerful interrogations and destabilizing images, made possible by the supersession of the modern equation of roots and options and by a shift from the conventional duality between structure and agency to a new, enabling duality between conformist action and action-with-clinamen

Characterization of titanium powders processed in n-hexane by high-energy ball milling

The effect of speed and milling time on the morphology, crystallite size, and phase composition of Ti Cp powders processed in n-hexane by high-energy ball milling (HEBM) using a E-max Retsch equipment was studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), and transmission electron microscopy (TEM). Lattice parameters, mean crystallite size, lattice strain, and dislocation density were obtained from Rietveld analysis. The XRD and TEM results show that the HEBM process of the Ti Cp promotes the transition from HCP to FCC after 6 h of milling at 1400 rpm. The transformation process could be attributed to the energy generated in the milling process which induces high deformation and presence of high-density dislocations in the powder. Graphical Abstract[Figure not available: see fulltext.]. © 2020, Springer-Verlag London Ltd., part of Springer Nature