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Analysis of residual stress in archaeological copper alloy artefacts by neutron diffraction has considerable potential for the investigation of early fabrication processes. However, residual stresses in metals are known to relax due to conditions similar to those encountered during burial, corrosion and conservation. In this pilot study, we investigate the effects of corrosion and conservation on a small group of replica copper ingots. Although corrosion and light cleaning do indeed cause some relaxation of stresses in the metal, corrosion having the most significant effect, the basic patterns and major features of the stress profiles may still be seen. [ABSTRACT FROM AUTHOR]

In efforts to preserve foster children's biological families and to promote the formation of alternative families in some situations, legislative efforts to promote 'permanency' have been gaining pace since the late 1990s. One policy and practice tool, concurrent planning (CP), simultaneously allows for the pursuit of reunification and adoption. This article examines six counties in California (USA) and their efforts towards implementation of the components of CP. Researchers used qualitative methods to explore policies and practices of CP. Key informants include social workers, social work supervisors, attorneys and judges. The study identifies and describes seven elements determined to be essential to the complete and successful implementation of CP. Implications for agency practice and family outcomes are discussed. [ABSTRACT FROM AUTHOR]

Objectives: This paper examines the research and theoretical literature on potential links between trauma and psychosis., Methods: Three main alternatives are considered; can psychosis cause PTSD, can trauma cause psychosis and could psychosis and PTSD both be part of a spectrum of responses to a traumatic event? The more influential studies considered are critically evaluated and methodological considerations specific to research regarding trauma and psychosis are also examined., Results: Evidence is found in support of each of these relationships, and an integrative approach to conceptualizing the relationships is suggested., Conclusions: Recent conceptualizations of PTSD and psychosis are used to inform the consideration of these different pathways, and the implications for theories of psychosis and trauma and the clinical implications for services for psychotic patients are discussed.