736 research outputs found
Operation Moshtarak and the manufacture of credible, âheroicâ warfare
Richard Lance Keeble argues that Fleet Streetâs coverage of the Afghan conflict has served largely to promote the interests of the military/industrial/media complex â and marginalise the views of the public who have consistently appealed in polls for the troops to be brought back hom
Fluctuating-friction molecular motors
We show that the correlated stochastic fluctuation of the friction
coefficient can give rise to long-range directional motion of a particle
undergoing Brownian random walk in a constant periodic energy potential
landscape. The occurrence of this motion requires the presence of two
additional independent bodies interacting with the particle via friction and
via the energy potential, respectively, which can move relative to each other.
Such three-body system generalizes the classical Brownian ratchet mechanism,
which requires only two interacting bodies. In particular, we describe a simple
two-level model of fluctuating-friction molecular motor that can be solved
analytically. In our previous work [M.K., L.M and D.P. 2000 J. Nonlinear Opt.
Phys. Mater. vol. 9, 157] this model has been first applied to understanding
the fundamental mechanism of the photoinduced reorientation of dye-doped liquid
crystals. Applications of the same idea to other fields such as molecular
biology and nanotechnology can however be envisioned. As an example, in this
paper we work out a model of the actomyosin system based on the
fluctuating-friction mechanism.Comment: to be published in J. Physics Condensed Matter
(http://www.iop.org/Journals/JPhysCM
Detection of the United States Neisseria meningitidis urethritis clade in the United Kingdom, August and December 2019 - emergence of multiple antibiotic resistance calls for vigilance.
Since 2015 in the United States (US), the US Neisseria meningitidis urethritis clade (US_NmUC) has caused a large multistate outbreak of urethritis among heterosexual males. Its 'parent' strain caused numerous outbreaks of invasive meningococcal disease among men who have sex with men in Europe and North America. We highlight the arrival and dissemination of US_NmUC in the United Kingdom and the emergence of multiple antibiotic resistance. Surveillance systems should be developed that include anogenital meningococci
A report on the study of land-sourced pollutants and their impacts on water quality in and adjacent to the Great Barrier Reef: an assessment to guide the development of management plans to halt any decline in the water quality of river catchments draining to the Reef, as a result of land-based pollution, and to achieve the long-term goal of reversing any trend in declining water quality
Includes 'Summary statement of the Reef Science Panel regarding water quality in and adjacent to the Great Barrier Reef
HIV testing in non-traditional settings: feasibility and acceptability in an acute admissions unit
An unfolding signifier: London's Baltic Exchange in Tallinn
In the summer of 2007 an unusual cargo arrived at Muuga and Paldiski harbors outside Tallinn. It consisted of nearly 50 containers holding over 1,000 tons of building material ranging from marble columns, staircases and fireplaces, to sculpted allegorical figures, wooden paneling and old-fashioned telephone booths. They were once part of the Baltic Exchange in the City of London. Soon they will become facets of the landscape of Tallinn. The following article charts this remarkable story and deploys this fragmented monument to analyze three issues relating to the Estonian capital: the relocation of the âBronze Soldierâ, the demolition of the Sakala Culture Center, and Tallinnâs future role as European Cultural Capital in 2011
âSex without fearâ: exploring the psychosocial impact of oral HIV pre-exposure prophylaxis on gay men in England
Gay, bisexual, and other men who have sex with men (GBMSM) experience a high prevalence of psychosocial health problems, such as harmful substance use and depression, as well as being disproportionately affected by HIV. HIV Pre-Exposure Prophylaxis (PrEP) may provide psychosocial benefits beyond its intended purpose of reducing HIV infection. We explore the psychosocial impact of oral PrEP use on gay men in England using qualitative data from the PROUD study. From February 2014 to January 2016, semi-structured in-depth interviews were conducted with 40 gay men and one trans woman. Participants were purposively recruited based on trial arm allocation, adherence, and sexual risk behaviours. By removing HIV risk from sex, PrEP improves usersâ wellbeing by reducing HIV-related anxiety and internalised stigma and increasing HIV prevention self-efficacy, sexual pleasure, and intimacy. In turn, these psychological changes may influence behaviour in the form of greater sexual freedom, reduced harmful drug use, and more protective sexual health behaviours. However, PrEP may create internal conflict for some gay men, due to its disruption of social norms around condom use and its perceived influence on their sexual behaviour leading to reduced condom self-efficacy. These findings provide a baseline of PrEPâs psychosocial impact amongst some of the first PrEP users in England and supports calls to consider the psychosocial impact of PrEP in prescribing guidelines
Professionalism and person-centredness: developing a practice based approach to leadership within NHS maternity services in the UK
This paper, based on data taken from in-depth interviews with senior midwives and obstetricians and conducted as part of a critical ethnographic study, argues for a greater appreciation of person-centred, value-led midwifery practice. The paper begins with a discussion of the way midwifery practice is shaped by encoded and embodied knowledge. The paper subsequently focuses on an emergent practice based leadership using an adapted Aristotelian conceptual framework derived from MacIntyre (2007). Professional dissonance is highlighted as a difficulty experienced by repositioned managers who are also expected to be leaders in their field. Using data gathered from in-depth interviews it is contended that establishing person-centred care might be better achieved through the development of practice based leadership (rather than solely by adherence to organisational requirements). This type of leadership could potentially nurture a professional environment that promotes qualities, such as agency, commitment and high levels of competence among midwives. Such leadership is central to UK government priorities and is applicable to a global practice development agenda
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