Ecological risk assessment Order Uggs Uk
is defined both in theory and in practice. To do it properly, we need to know what targets Cheap Uggs Australia
we are protecting, but these targets are not always obvious and clearly defined. The pragmatic approach, used most generally in the context of environmental protection legislation, is the risk quotient method. Two other approaches involving more transparency and ecological relevance are critically assessed. One is based on species sensitivity distributions; the other is based on generalized population dynamics. Challenges for the future are considered.
The effect of slip transfer on heterogeneous deformation of polycrystals has been a topic of recurring interest, as this process can either lead to the nucleation of damage, or prevent nucleation of damage. This paper examines recent experimental characterization of slip transfer in tantalum, TiAl, and Ti alloys. The methods used to analyze and assess evidence for the occurrence of slip transfer are discussed. Comparisons between a characterized and simulated patch of microstructure are used to illustrate synergy that leads to new insights that cannot arise with either approach alone.