Suchergebnisse

Postcolonialism and Science Fiction explores intersections and interactions between the genre of science fiction and the theory and practice of postcolonialism, concentrating primarily on contemporary science fiction from the 1950s to the present day. The book argues that several of the foundational myths of science fiction -- the 'other', or the stranger, and the strange and foreign land -- are shared at the heart of colonialism, and that postcolonial science fiction has developed unique and creative ways of overcoming and dispelling these myths. Using close readings and thematic studies, ranging from lively discussions of Japanese and Canadian science fiction to a thorough and incisive deconstruction of race and (post)colonialism in the online game World of Warcraft, Postcolonialism and Science Fiction is the first comprehensive study of the complex and developing relationship between the two areas. It will be of interest to fans, researchers, students and anyone else interested in science fiction, postcolonial studies, or both

Abstract
Topical skin care products and hydrating compositions (moisturizers or injectable fillers) have been used for years to improve the appearance of, for example facial wrinkles, or to increase "plumpness". Most of the studies have addressed these changes based on the overall mechanical changes associated with an increase in hydration state. However, little is known about the water mobility contribution to these changes as well as the consequences to the specific skin layers. This is important as the biophysical properties and the biochemical composition of normal stratum corneum, epithelium, and dermis vary tremendously from one another.
Our current studies and results reported here have focused on a novel approach (dynamic atomic force microscopy-based nanoindentation) to quantify biophysical characteristics of individual layers of ex vivo human skin. We have discovered that our new methods are highly sensitive to the mechanical properties of individual skin layers, as well as their hydration properties. Furthermore, our methods can assess the ability of these individual layers to respond to both compressive and shear deformations. In addition, since human skin is mechanically loaded over a wide range of deformation rates (frequencies), we studied the biophysical properties of skin over a wide frequency range. The poroelasticity model used helps to quantify the hydraulic permeability of the skin layers, providing an innovative method to evaluate and interpret the impact of hydrating compositions on water mobility of these different skin layers.