This 2006 work began with the author's exploration of the applicability of the finite deformation theory of elasticity when various standard assumptions such as convexity of various energies or ellipticity of the field equations of equilibrium are relinquished. The finite deformation theory of elasticity turns out to be a natural vehicle for the study of phase transitions in solids where thermal effects can be neglected. This text will be of interest to those interested in the development and application of continuum-mechanical models that describe the macroscopic response of materials capable of undergoing stress- or temperature-induced transitions between two solid phases. The focus is on the evolution of phase transitions which may be either dynamic or quasi-static, controlled by a kinetic relation which in the framework of classical thermomechanics represents information that is supplementary to the usual balance principles and constitutive laws of conventional theory.
We provide a broad overview of human brain development with associated malformations and injuries that occur in the period between early embryogenesis and delivery. The aim of this review is to summarize current understanding of the molecular and environmental cues that shape the developing brain. For each developmental stage, we give examples of disorders that arise from genetic and/or environmental insults to illustrate critical points of neurological susceptibility. Table of Contents: Introduction / Origin of the Central Nervous System: The Neural Tube (3-4 Weeks Gestation) / Patterning of the Neural Tube: A Blueprint for the CNS / Neural Proliferation and Migration (3 Months Gestation Into Postnatal Period) / Organization of Neuronal Circuits and Synaptogenesis (5 Months Gestation-Postnatal Years) / Gliogenesis and Myelination (5-Month Childhood) / Developmental Brain Injury: Before, During, and After Birth / Conclusion / References / Author Biographies
This learner's book offers language takes and activities in learning, reading and writing for first-language learners of Xhosa. It is part of the African Language series which is designed to prepare learners to transfer cognitive skills to other learning areas.
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