Formation of FeNi with L10-ordered structure using high-pressure torsion

FeNi with the L1₀-ordered structure is formed over an astronomical timescale in meteorites. In this study, severe plastic deformation using high-pressure torsion (HPT) is employed for the production of the L1₀ structure in the laboratory. Its formation is confirmed by X-ray diffraction analysis and transmission electron microscopy. Processing of elemental nanopowders by HPT is an effective method for the formation of the L1₀ phase, which is enhanced by the addition of Co to FeNi or annealing after HPT. The formation of the phase must be associated with enhanced diffusion through HPT.     

Bwiti,iboga, trance and healing in Gabon

ABSTRACT

The Bwiti is one out of several religions in Africa and through it, it is believed, that the members can be connected to the world of the ancestors. There is also the ritual of healing in Bwiti. In this ritual, participants are invited to take iboga. They fall into a trance and after this phase, which in principle lasts three days; those who were sick recover the health in many cases. We try to find out in the article, if the change of the state of consciousness like trance can heal. In the end we discover that it is possible. In Bwiti, the change of the paradigm is the most important principle.     

Phase transformation of germanium by processing through high-pressure torsion: strain and temperature effects

Germanium has been processed by high-pressure torsion (HPT) under a nominal pressure of 24 GPa at room temperature and cryogenic temperature. The samples processed at room temperature were composed of a diamond-cubic Ge-I phase and a metastable tetragonal Ge-III phase. The formation of Ge-III was significantly suppressed and Ge-I and an amorphous phase, in addition to a small amount of body-centred-cubic Ge-IV, appeared in the case of cryogenic HPT processing at 100 K. The Ge-IV phase gradually disappeared at room temperature. These results indicated that shear strain and thermal energy are important for promoting the formation of Ge-III.     

Effect of spin-orbit interaction on the metal-insulator transition in doped silicon

Abstract

We show that in disordered metallic systems, spin-orbit interactions lead to the existence of two metallic phases separated in temperature. The low-temperature metallic phase arises from spin-orbit interactions. The crossover temperature is proportional to (Z-Z′)² (Z is the atomic number of the donor and Z′ that of the matrix) and is expected to be observable for donors with large atomic numbers. The presence of two metallic phases implies two mobility edges, existing at different temperatures, and affecting the conductivity when the Fermi energy E _F lies below the mobility edge E _c We thus predict anomalies in the conductivity in this range of concentration, consistent with the measurements of Long and Pepper on Si:Sb.     

The Aesthetics of Life: More than Ethics and Morality

Studies in Philosophy and Education - This paper explores the general characteristics of the aesthetics of life. Our approach will be in thinking about the aesthetics of life as a domain...