Post-industrial masculinities and gym culture: Graft, craft, and fraternity.

This article theorizes a link between contemporary masculinity in post-industrial spaces and 'hardcore' gym culture. Over the last three decades the health and fitness industry has grown exponentially, with bodily modification and the proliferation of gymnasia, health supplements and wearable fitness trackers now a dominant means by which many construct their identities. Simultaneously, the onset of wholesale neoliberalism, which has caused large-scale de-industrialization and the global outsourcing of labor, has resulted in a macro-economic shift from production to consumption in the West. Set against this backdrop, this article draws upon two ethnographic studies in 'hardcore' gyms to examine the significance of bodywork in the lives of men in two working-class, post-industrial locales in England. First, gym work is conceptualized as a form of both graft and craft within our samples, and the role of the male body as a post-industrial project is considered. Following this, the gym is presented as a site of fraternity which, following the loss of collectivizing industry in both areas, allows men to bond over a shared endeavor and build genuine kinship. Ultimately, we conclude that the gym is a space of production within consumption, furnishing our sample with a means of performing their embodied masculinity and repurposing formative notions of graft, craft, and fraternity in a new adaptive space.

The Liver King Lie: Misrepresentation, justification, and public health implications.

It is well-established that performance and image enhancing drugs (PIEDs) are effective in increasing muscle mass and strength. PIEDs are unique in that, while harm may result from use, there is little evidence of widespread individual or social harm comparable with other illicit substances. However, given the rapid growth of the online health and fitness industry, the digital consumption of hardcore fitness content represents a space ripe for indirect harms. A poignant example of this trend among the digital health and fitness community is the contestation around 'fake natty' users, who falsely claim to not use PIEDs. The non-disclosure of use has the potential to give individuals who are not enhanced the false impression that they too can achieve a bodily ideal which is similar, potentially resulting in psychological distress and risky behaviours. In this commentary, we discuss this harmful phenomenon using the case study of the fitness influencer Brian Johnson, more commonly known as Liver King. Employing a psycho-criminological lens, we use Social Identity Theories to understand the 'Primal' identity, before unpacking Johnson's disavowal of his PIED consumption through Sykes and Matza's (1957) techniques of neutralization. We conclude with an overview of the harms surrounding fake natural influencers and cognitive dissonance, before attempting to map a path towards emic harm reduction in collaboration with the digital fitness community.

The Royal Army Dental Corps today.

The Royal Army Dental Corps (RADC) provides dental care to the British Army both in barracks and on deployment While a significant proportion of most RADC dental officers' careers is spent working in permanent military primary care dental clinics, it is the ability of all RADC dental officers to provide dental care when deployed that provides unique challenges only seen in the military environment. All RADC dental officers are able to deliver high quality care in temporary facilities. During a career the majority of RADC dental officers will have at least one job in a medical regiment providing the dental component of the British Army's rapidly deployable medical capability. This article covers some of the issues faced when delivering dental care outside the UK using portable equipment on a recent exercise.As RADC officers gain experience they are expected to lead increasingly large teams, both within primary care dentistry and some in the wider Army Medical Services, with the appropriate professional and military training to support their development.Working under pressure can be developed through the use of adventurous training and sport and the authors have pushed themselves well beyond their comfort zones in the air, on land and under the sea.

Characterization of a 200-nF unipolar, high current, low inductance capacitor switch assembly.

Capacitor switch assemblies (CSAs) are a viable alternative to the standard Linear Transformer Driver (LTD) brick-the prime power "building block" in LTD-based high current drivers. In a CSA, the geometrical advantages combined with the switch's placement within a CSA produce a significantly lower inductance structure compared to the LTD brick. Lower inductances enable higher peak currents and faster rise times when all other parameters are held constant, thus making low inductance a crucial feature in high current systems. In this article, the experimental characterization of a 200-nF, 38-nH CSA is presented. When charged to 56 (57 kV), this CSA generates a 76 (64-kA) current peak into 0.28 (0.46-Ω) resistive loads. Comparing the experimental data's waveforms with those of an analytic circuit model, close agreement with underdamped RLC circuit theory is obtained. Based on this CSA's performance, the experimental data are extrapolated to model the performance of a bipolar 100-nF (±90 kV) CSA and a unipolar 200-nF (90 kV) CSA and compared with a standard 40-nF, bipolar (±100 kV) LTD brick. Furthermore, circuit simulations are performed for a 2.2-m diameter LTD cavity with 20 dual polarity (±100 kV) standard bricks and 23 dual polarity (±90 kV) CSAs. An increase by a factor of 2 in the power output is obtained for the CSA-LTD cavity over the brick LTD cavity while maintaining the same cross-sectional area. This has a large potential impact on the pulsed power generator design, both for smaller university-scale machines and proposed next-generation [60 Mega Amp (MA)] accelerators.

The influence of intramolecular bridges on the dynamics of a protein folding reaction.

Thirteen versions of a beta-sheet protein have been constructed, each with a single, surface-exposed disulfide bridge. A comparison of folding kinetics, in oxidizing and reducing conditions, is used to elucidate the order in which beta-strands become associated during the folding process and, hence, the relationship between topology and folding dynamics. In common with the wild-type molecule, all the proteins fold through a two-step (three state) mechanism with a rapidly formed intermediate which slowly converts to the native state. In a majority of cases, the bridge is seen to stabilize the folded state, and for five of the modified proteins, the additional stability is greater than 3 kcal/mol. Surprisingly, cross-links which connect beta-strands which are distant in sequence predominantly stabilize the rapidly formed intermediate state, suggesting that these strand-strand interactions occur in the initial stages of folding. Cross-links which stabilize local hairpins have their major influence on the second, rate-determining step leading to significant enhancements in the folding rate. We find that enhancement of the folding rate in the second, rate-limiting step is correlated with a reduction in contact order in the same way as in naturally occurring proteins of different folds. The large increases in native-state stability resulting from the insertion of disulfide bridges on the surface of beta-sheet structures have implications for enhancing the robustness of proteins by molecular engineering.