Influence of Heat Treatment on Defect Structures in Single-Crystalline Blade Roots Studied by X-ray Topography and Positron Annihilation Lifetime Spectroscopy

Single-crystalline superalloy CMSX-4 is studied in the as-cast state and after heat treatment, with material being taken from turbine blade castings. The effect of the heat treatment on the defect structure of the root area near the selector/root connection is emphasized. Multiscale analysis is performed to correlate results obtained by X-ray topography and positron annihilation lifetime spectroscopy (PALS). Electron microscopy observations were also carried out to characterize the inhomogeneity in dendritic structure. The X-ray topography was used to compare defects of the misorientation nature, occurring in as-cast and treated states. The type and concentration of defects before and after heat treatment in different root areas were determined using the PALS method, which enables voids, mono-vacancies, and dislocations to be taken into account. In this way, differences in the concentration of defects caused by heat treatment are rationalized

Social Media, Gender and the Mediatisation of War: Exploring the German Armed Forces’ Visual Representation of the Afghanistan Operation on Facebook

Studies on the mediatisation of war point to attempts of governments to regulate the visual perspective of their involvements in armed conflict – the most notable example being the practice of ‘embedded reporting’ in Iraq and Afghanistan. This paper focuses on a different strategy of visual meaning-making, namely, the publication of images on social media by armed forces themselves. Specifically, we argue that the mediatisation of war literature could profit from an increased engagement with feminist research, both within Critical Security/Critical Military Studies and within Science and Technology Studies that highlight the close connection between masculinity, technology and control. The article examines the German military mission in Afghanistan as represented on the German armed forces’ official Facebook page. Germany constitutes an interesting, and largely neglected, case for the growing literature on the mediatisation of war: its strong antimilitarist political culture makes the representation of war particularly delicate. The paper examines specific representational patterns of Germany’s involvement in Afghanistan and discusses the implications which arise from what is placed inside the frame of visibility and what remains out of its view

Ethical, religious and factual beliefs about the supply of emergency hormonal, contraception by UK community pharmacists

Background and methodology Community pharmacists' role in the sale and supply of emergency hormonal contraception (EHC) represents an opportunity to increase EHC availability and utilise pharmacists' expertise but little is known about pharmacists' attendant ethical concerns. Semi-structured qualitative interviews were undertaken with 23 UK pharmacists to explore their views and ethical concerns about EHC. Results Dispensing EHC was ethically acceptable for almost all pharmacists but beliefs about selling EHC revealed three categories: pharmacists who sold EHC, respected women's autonomy and peers' conscientious objection but feared the consequences of limited EHC availability; contingently selling pharmacists who believed doctors should be first choice for EHC supply but who occasionally supplied and were influenced by women's ages, affluence and genuineness; non-selling pharmacists who believed EHC was abortion and who found selling EHC distressing and ethically problematic. Terminological/factual misunderstandings about EHC were common and discussing ethical issues was difficult for most pharmacists. Religion informed non-selling pharmacists' ethical decisions but other pharmacists prioritised professional responsibilities over their religion. Discussion and conclusions Pharmacists' ethical views on EHC and the influence of religion varied and, together with some pharmacists' reliance upon non-clinical factors, led to a potentially variable supply, which may threaten the prompt availability of EHC. Misunderstandings about EHC perpetuated lay beliefs and potentially threatened correct advice. The influence of subordination and non-selling pharmacists' dispensing EHC may also lead to variable supply and confusion amongst women. Training is needed to address both factual/terminological misunderstandings about EHC and to develop pharmacists' ethical understanding and responsibility