scholarly journals Juvenile harbor porpoises in the UK are exposed to a more neurotoxic mixture of polychlorinated biphenyls than adults

2019 ◽  
Author(s):  
Rosie Williams

Polychlorinated biphenyls (PCBs) are a group of 209 persistent and bio-accumulative toxic pollutants present as complex mixtures in human and animal tissues. Harbor porpoises accumulate some of the highest levels of PCBs because they are long-lived mammals that feed at a high trophic level. Studies typically use the sum of a suite of individual chlorobiphenyl congeners (CBs) to investigate PCBs in wildlife. However, toxic effects and thresholds of CB congeners differ, therefore population health risks of exposure may be under or over-estimated dependent on the congener profiles present. In this study, we found congener profiles varied with age, sex and location, particularly between adult females and juveniles. We found that adult females had the highest proportions of octa-chlorinated congeners whilst juveniles had the highest proportions of tri- and tetra-chlorinated congeners. This is likely to be a consequence of pollutant offloading between mothers and calves during lactation. Analysis of the individual congener toxicities found that juveniles were exposed to a more neurotoxic CB mixture at a time when they were most vulnerable to its effects. These findings are an important contribution towards our understanding of variation in congener profiles and the potential effects and threats of PCB exposure in cetaceans.

2020 ◽  
Vol 708 ◽  
pp. 134835 ◽  
Author(s):  
Rosie S. Williams ◽  
David J. Curnick ◽  
Jonathan L. Barber ◽  
Andrew Brownlow ◽  
Nicholas J. Davison ◽  
...  

Author(s):  
Margaretta Jolly

This ground-breaking history of the UK Women’s Liberation Movement explores the individual and collective memories of women at its heart. Spanning at least two generations and four nations, and moving through the tumultuous decades from the 1970s to the present, the narrative is powered by feminist oral history, notably the British Library’s Sisterhood and After: The Women’s Liberation Oral History Project. The book mines these precious archives to bring fresh insight into the lives of activists and the campaigns and ideas they mobilised. It navigates still-contested questions of class, race, violence, and upbringing—as well as the intimacies, sexualities and passions that helped fire women’s liberation—and shows why many feminists still regard notions of ‘equality’ or even ‘equal rights’ as insufficient. It casts new light on iconic campaigns and actions in what is sometimes simplified as feminism’s ‘second wave’, and enlivens a narrative too easily framed by ideological abstraction with candid, insightful, sometimes painful personal accounts of national and less well-known women activists. They describe lives shaped not only by structures of race, class, gender, sexuality and physical ability, but by education, age, love and cultural taste. At the same time, they offer extraordinary insights into feminist lifestyles and domestic pleasures, and the crossovers and conflicts between feminists. The work draws on oral history’s strength as creative method, as seen with its conclusion, where readers are urged to enter the archives of feminist memory and use what they find there to shape their own political futures.


Author(s):  
Pete Dale

Numerous claims have been made by a wide range of commentators that punk is somehow “a folk music” of some kind. Doubtless there are several continuities. Indeed, both tend to encourage amateur music-making, both often have affiliations with the Left, and both emerge at least partly from a collective/anti-competitive approach to music-making. However, there are also significant tensions between punk and folk as ideas/ideals and as applied in practice. Most obviously, punk makes claims to a “year zero” creativity (despite inevitably offering re-presentation of at least some existing elements in every instance), whereas folk music is supposed to carry forward a tradition (which, thankfully, is more recognized in recent decades as a subject-to-change “living tradition” than was the case in folk’s more purist periods). Politically, meanwhile, postwar folk has tended more toward a socialist and/or Marxist orientation, both in the US and UK, whereas punk has at least rhetorically claimed to be in favor of “anarchy” (in the UK, in particular). Collective creativity and competitive tendencies also differ between the two (perceived) genre areas. Although the folk scene’s “floor singer” tradition offers a dispersal of expressive opportunity comparable in some ways to the “anyone can do it” idea that gets associated with punk, the creative expectation of the individual within the group differs between the two. Punk has some similarities to folk, then, but there are tensions, too, and these are well worth examining if one is serious about testing out the common claim, in both folk and punk, that “anyone can do it.”


2021 ◽  
Author(s):  
Jifa Zhang ◽  
Yuan Jiang ◽  
Leah F Easterling ◽  
Anton Anster ◽  
Wanru Li ◽  
...  

Organosolv treatment is an efficient and environmentally friendly process to degrade lignin into small compounds. The capability of characterizing the individual compounds in the complex mixtures formed upon organosolv treatment...


2021 ◽  
pp. 1-18
Author(s):  
CIARÁN MURPHY

Abstract The Munro Review of Child Protection asserted that the English child protection system had become overly ‘defensive’, ‘bureaucratised’ and ‘standardised’, meaning that social workers were not employing their discretion in the interests of the individual child. This paper reports on the results of an ethnographic case study of one of England’s statutory child protection teams. The research sought to explore the extent of social worker discretion relative to Munro’s call for ‘radical reform’ and a move towards a more ‘child-centred’ system. Employing an iterative mixed methods design – encompassing documentary analysis, observation, focus group, questionnaire, interview and ‘Critical Realist Grounded Theory’ – the study positioned the UK Government’s prolonged policy of ‘austerity’ as a barrier to social worker discretion. This was because the policy was seen to be contributing to an increased demand for child protection services; and a related sense amongst practitioners that they were afforded insufficient time with the child to garner the requisite knowledge, necessary for discretionary behaviour. Ultimately, despite evidence of progress relative to assertions that social worker discretion had been eroded, the paper concludes that there may still be ‘more to do’ if we are to achieve the ‘child-centred’ and ‘effective’ system that Munro advocated.


Nanoscale ◽  
2021 ◽  
Author(s):  
Harry Geddes ◽  
Henry Hutchinson ◽  
Alex R Ha ◽  
Nicholas P Funnell ◽  
Andrew Goodwin

Using a non-negative matrix factorisation (NMF) approach, we show how the pair distribution function (PDF) of complex mixtures can be deconvolved into the contributions from the individual phase components and...


Author(s):  
Áine Ní Léime ◽  
Wendy Loretto

This chapter documents international policy developments and provides a gender critique of retirement, employment and pension policies in Australia, Ireland, Germany, Portugal, Sweden, the UK, and the US. It assesses the degree to which the individual country's extended working life policies have adopted the agenda (increasing pension age and introducing flexible working) set out by the OECD and the EU. Policies include raising state pension age, changes in the duration of pension contribution requirements, the move from defined benefits to defined contribution pensions, policies on caring for vulnerable members of the population, policies enabling flexible working and anti-age discrimination measures. An expanded framework is used to assess the degree to which gender and other intersecting issues such as health, caring, class, type of occupation and/or membership of minority communities have (or have not) been taken into account in designing and implementing policies extending working life.


2007 ◽  
Vol 12 (1) ◽  
pp. 75-89 ◽  
Author(s):  
Stephen Whittle ◽  
Lewis Turner

Gender transformations are normatively understood as somatic, based on surgical reassignment, where the sexed body is aligned with the gender identity of the individual through genital surgery – hence the common lexicon ‘sex change surgery’. We suggest that the UK Gender Recognition Act 2004 challenges what constitutes a ‘sex change’ through the Act's definitions and also the conditions within which legal ‘recognition’ is permitted. The sex/gender distinction, (where sex normatively refers to the sexed body, and gender, to social identity) is demobilised both literally and legally. This paper discusses the history of medico-socio-legal definitions of sex have been developed through decision making processes when courts have been faced with people with gender variance and, in particular, the implications of the Gender Recognition Act for our contemporary legal understanding of sex. We ask, and attempt to answer, has ‘sex’ changed?


2000 ◽  
Vol 6 (2) ◽  
pp. 159-167 ◽  
Author(s):  
Rodney Cartwright

All travel has associated health risks that need to be recognized not only by travellers, but also by tour operators and governments. In this context, the author considers some of the infections that have been contracted by package holiday tourists from the UK. With 15 million package holidays sold in the UK each year and increasing consumer concern about health risks, health is now a major factor in customer satisfaction. Media exposure and possible legal action when expectations are not met mean that the need to reduce the health risks associated with travel is crucial for the tourism industry as well as for travellers themselves. This paper sets out the main hazards and risks and examines what actions can and should be taken by tour operators, destination countries, and tourists. The author stresses the importance of ensuring a proper health infrastructure in the development of tourist areas; the need for operators to stipulate minimum hotel standards, backed up by regular auditing; the responsibility of tourists to ensure that they do not expose themselves to unnecessary risks; and the significance of surveillance systems in the control of travel-related diseases.


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