Effect of fatty acid chain length and concentration on the structural properties of the coated CoFe2O4 nanoparticles

A. Dey,M.K. Purkait 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.24 No.-

The present study investigates the effect of various synthesis parameters including chain length of fatty acids, concentration ratio of precursor to fatty acid, reaction temperature and aging time on the structural as well as magnetic properties of the CoFe2O4 nanoparticles. The synthesis of nanoparticles was achieved successfully in aqueous solution by the conventional Co-precipitation technique using Fe3+ and Co2+ ions by the addition of a strong base NaOH. Herein, the Oleic acid and Lauric acid was used as the stabilizing agent during the nucleation stage of the nanoparticles. The structural as well as morphological properties were characterized by XRD, FTIR and FESEM techniques and the magnetic intensity was investigated by vibrational sample magnetometer (VSM). The XRD analysis of the coated nanoparticles confirmed that the cubic spinel phase of the CoFe2O4 nanoparticles were retained after coating and the crystallite size reduced as the concentration of fatty acid increased. FESEM analysis revealed that the synthesized nanoparticles were of spherical shape and the extent of nanoparticle aggregation reduced gradually as the ratio of precursor to oleic acid was decreased from 4 to 1. Further, the hysteresis loop confirmed the ferromagnetic nature of the coated nanoparticles with high coercivity.

An Interview with Tim Cresswell

Tim Cresswell ; Peter Adey Academy of Mobility Humanities 2022 Mobility Humanities Vol.1 No.2

PA (Peter Adey): Firstly, I’d like to say thank you very much for agreeing to talk to us. I thought we were going to start off talking about something that has inspired the Academy of Mobility Humanities (AMH), and this journal, which is in relation to Pearce and Merriman's book and special issue of Mobilities (2017), “Mobility and the Humanities.” One of the interesting things they highlighted was a counter version of the way that the new mobilities paradigm and mobility studies could be constructed. They question the more social science driven origins, and present an alternative history to the new mobilities paradigm. Obviously, knowing your work very well, I wondered how you saw that kind of history? TC (Tim Cresswell): I think that until I saw that reference to an alternative history, I did not think that was necessary as a construct because, for me, I think that the way mobility and mobility studies became prominent was through the humanities. I never considered that it was anything other than that. And so, as they note in the paper, when I write about such things, I tend to note that thinking about mobilities connects the social sciences, the humanities, and, indeed, the arts. When I think about where my inspirations were, before the new mobilities paradigm paper and before John Urry's book, Sociology Beyond Societies (2000), there was work being done in a of number of fields, including anthropology, critical theory, philosophy, and literary studies that focused in one way or another on mobilities. So if you look at Mary Louise Pratt’s Imperial Eyes(1992), you could say the only reason it’s not mobilities work was because it wasn't identified as such. It was clearly starting to talk about these ideas of transculturation and moving between things. And James Clifford was talking about living between sites, not focusing on one place as an anthropological piece of work but living across the routes with a “u” rather than roots with the two “o”s. In philosophy, there were all the works that were happening under the guise of postmodernism that cantered fluidity and the nomadic. Even in sociology, if you read a book of Zygmunt Bauman, you can call that social science or you can call that Humanities. The same is true of John Urry (Tourist Gaze, Sociology Beyond Societies, and Mobilities). If you read Mimi Sheller’s work, it is as much informed by the humanities as it is by social sciences. When I hear reference to the social sciences, I tend to think of something a bit more reductive than it needs to be. I think of a more empiricist, slightly more quantitative tradition that still tries to maintain the word “science.” But there is clearly the interpretive social sciences which overlap with the humanities. In my own work I think that all my trajectory of thinking about mobility is inspired by the Humanities or what would be recognised as humanities, including creative arts and literature.

Introduction: Connecting, Capturing and Clarifying Mobility

Peter Adey Academy of Mobility Humanities 2006 Mobility Humanities Vol.1 No.2

Tim Cresswell is a human geographer and poet, a hugely original and insightful writer and teacher, and an influential force within the discipline of Geography, the interdisciplinary field of mobility studies and much further afield. This interview, recorded in February 2020 in the early stages of the COVID-19 pandemic (Tim has since written about “valuing” mobility during COVID-19 [2021]), was recorded by Jinhyoung Lee and myself over breakfast in Tim’s home in Edinburgh. He is currently Ogilvie Professor of Geography at the University of Edinburgh, after serving as Dean of the Faculty and Vice President for Academic Affairs at Trinity College, Hartford, Connecticut. Tim was awarded his first PhD under the supervision of Yi-Fu Tuan at the University of Wisconsin-Madison, and a second PhD in Creative Writing at Royal Holloway University of London on Topo-poetics: Poetry and Place (2015) under the supervision of the poet Jo Shapcott. The relationship between mobility, place and creative writing can be compared to a triple-helix of concerns we discuss through his work and this interview.

Activity, Participation, and Goal Awareness After Acquired Brain Injury: A Prospective Observational Study of Inpatient Rehabilitation

Zoe Adey-Wakeling,Laura Jolliffe,Elizabeth O’Shannessy,Peter Hunter,Jacqui Morarty,Ian D. Cameron,Enwu Liu,Natasha A. Lannin 대한재활의학회 2021 Annals of Rehabilitation Medicine Vol.45 No.6

Objective To examine the frequency and timing of inpatient engagement in meaningful activities within rehabilitation (within and outside of structured therapy times) and determine the associations between activity type, goal awareness, and patient affect.Methods This prospective observational study performed behavioral mapping in a 42-bed inpatient brain injury rehabilitation unit by recording patient activity every 15 minutes (total 42 hours). The participants were randomly selected rehabilitation inpatients with acquired brain injury; all completed the study. The main outcome measures included patient demographics, observation of activity, participation, goal awareness, and affect.Results The inpatients spent 61% of the therapeutic day (8:30 to 16:30) in their single room and were alone 49% of the time. They were physically socially inactive for 76% and 74% of their awake time, respectively, with neutral affect observed for about half of this time. Goal-related activities were recorded for only 25% of the inpatients’ awake time. The odds of physical activity were 10.3-fold higher among in patients receiving support to address their goals within their rehabilitation program (odds ratio=10.3; 95% confidence interval, 5.02–21.16).Conclusion Inpatients in a mixed brain injury rehabilitation unit spent a large amount of their awake hours inactive and only participated in goal-related activities for a quarter of their awake time. Rehabilitation models that increase opportunities for physical, cognitive, and social activities outside of allied health sessions are recommended to increase overall activity levels during inpatient rehabilitation.

Mobilities at The End: (Inter)-planetary Futures and the Ethics of Evacuation Mobility

Peter Adey Academy of Mobility Humanities 2022 Mobility Humanities Vol.1 No.1

What might mobility look like at the end of the world? In this paper I explore different apprehensions of inter-planetary mobility or “evacuation” as our Earth appears to become uninhabitable for life, and humanity is forced to seek a way to “exit” or evacuate the planet. In these imaginings of mobilities in the future, rendered at a sometimes impossibly vast, planetary scale, evacuation has become a common trope for drama, used as a technical but dramatic device that is often left unquestioned or critically examined. And yet these forms of planetary evacuation tend to repeat other aesthetic and narrative forms that are interrogated within the paper at length,especially as they pertain to problematic gendered, racial, colonial and reproductive logics. Sketching out this extreme form of “emergency mobility” through science fiction literature and film,the paper explores the politics, ethics and potential (in)justices of planetary evacuation mobilities. But planetary evacuations are perhaps not as interesting on their own because of what they might say about how we perform and imagine evacuation mobilities on the Earth now, and in the near future.

Mobility, Infrastructure, and the Humanities

Peter Adey ; Jinhyoung Lee ; Giada Peterle ; and Tania Rossetto Academy of Mobility Humanities 2024 Mobility Humanities Vol.3 No.1

Mobility, suggested John Urry, is fundamental as one of “the infrastructures of social life” (13). Yet mobilities are as equally undergirded by infrastructures of systems that can both enable and disable mobilities. This special issue emerged from the 2022 Global Mobility Humanities Conference, and in this introductory article we open out several problematics which framed some of the conference and introduce further the themes explored by the special issue papers. First, we tease out the academic networks, practices and relations of a broader “infrastructuring” of the (mobility) humanities. Secondly, while theorising a mobility humanities of infrastructure, we introduce the papers by way of exploring several cross-cutting concerns. That is, we discuss how the methodological possibilities stimulated by a humanistic lens may produce nuanced accounts of infrastructures (“Methods as Infrastructures”); how mobility humanities can present the polyvocality of infrastructures, enlarging the conceptualisation of both infrastructure and infrastructuring (“Pluralising Infrastructures”); and how infrastructures can be interrogated ethically and politically in terms of a wide variety of critical issues that pertain to mobility equality, sustainability, and inclusiveness, that is, the notion of mobility justice (“[Ex]change: The [Broken] Promises of Infrastructures.” Thus, we hope this special issue functions as a powerful and productive trigger to stimulate more encounters and develop generative conversations.

First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment

Adams, D.,Adey, D.,Asfandiyarov, R.,Barber, G.,de Bari, A.,Bayes, R.,Bayliss, V.,Bertoni, R.,Blackmore, V.,Blondel, A.,Boehm, J.,Bogomilov, M.,Bonesini, M.,Booth, C. N.,Bowring, D.,Boyd, S.,Bradshaw, Springer-Verlag 2019 The European physical journal. C, Particles and fi Vol.79 No.3

A Review of the State-of-the-Art in Railway Risk Management

Claudio Martani,Natalia Papathanasioud,Bryan T. Adey 한국철도학회 2017 International Journal of Railway Vol.10 No.1

With railway in Europe carrying a consistent number of passengers and amount of goods on an aged infrastructure network, the risk related to infrastructure is high. When it is not possible to execute all of the interventions that are desired to offset deterioration, for example, due to budget constraints, the interventions that result in the largest risk reduction for the amount of resources available should be executed, i.e. included in the intervention program to be implemented. To determine the interventions to be executed, it is first necessary to assess the infrastructure related risk and then, second to determine which interventions should be executed. Two tasks that are currently done in the management of railway infrastructure relatively heterogeneously, and mainly at the object level. In this paper, a summary of the state-of-the-art of risk assessment and the development of intervention programs for railway infrastructure is presented. The summary is grouped in overviews of work done on the assessment of risk at both the network and object level, and on the development of intervention programs at both the network and object level. In the conclusion, attention is drawn to the work required to improve both, and steps for future research are given.

A taxonomic account of non-geniculate coralline algae (Corallinophycidae, Rhodophyta) from shallow reefs of the Abrolhos Bank, Brazil

Michel B. Jesionek,Ricardo G. Bahia,Jazmín J. Hernández-Kantún,Walter H. Adey,Yocie Yoneshigue-Valentin,Leila L. Longo,Gilberto M. Amado-Filho 한국조류학회I 2016 ALGAE Vol.31 No.4

The Abrolhos Continental Shelf (ACS) encompasses the largest and richest coral reefs in the southern Atlantic Ocean. A taxonomic study of non-geniculate coralline algae (NGCA) from the region was undertaken using both morpho-anatomicaland molecular data. Specimens of NGCA were collected in 2012 and 2014 from shallow reefs of the ACS. Phylogeneticanalysis was performed using dataset of psbA DNA sequences from 16 specimens collected in the ACS and additionalGenBank sequences of related NGCA species. Nine common tropical reef-building NGCA species were identifiedand described: Hydrolithon boergesenii, Lithophyllum kaiseri, Lithophyllum sp., Lithothamnion crispatum, Melyvonneaerubescens, Pneophyllum conicum, Porolithon onkodes, Sporolithon ptychoides, and Titanoderma prototypum. A key forspecies identification is also provided in this study. Our molecular phylogenetic analyses suggest that Lithophyllum sp. corresponds to a new species. Our study also confirms that Lithophyllum kaiseri is a new record in Brazil. The psbA sequencesof Lithophyllum kaiseri and Melyvonnea erubescens matched with type specimens indirectly. The taxonomicidentification of the remaining species was supported by morpho-anatomical evidences as DNA sequences of their typesor topotypes remain unavailable.

A taxonomic account of non-geniculate coralline algae (Corallinophycidae, Rhodophyta) from shallow reefs of the Abrolhos Bank, Brazil

Jesionek, Michel B.,Bahia, Ricardo G.,Hernandez-Kantun, Jazmin J.,Adey, Walter H.,Yoneshigue-Valentin, Yocie,Longo, Leila L.,Amado-Filho, Gilberto M. The Korean Society of Phycology 2016 ALGAE Vol.31 No.4

The Abrolhos Continental Shelf (ACS) encompasses the largest and richest coral reefs in the southern Atlantic Ocean. A taxonomic study of non-geniculate coralline algae (NGCA) from the region was undertaken using both morpho-anatomical and molecular data. Specimens of NGCA were collected in 2012 and 2014 from shallow reefs of the ACS. Phylogenetic analysis was performed using dataset of psbA DNA sequences from 16 specimens collected in the ACS and additional GenBank sequences of related NGCA species. Nine common tropical reef-building NGCA species were identified and described: Hydrolithon boergesenii, Lithophyllum kaiseri, Lithophyllum sp., Lithothamnion crispatum, Melyvonnea erubescens, Pneophyllum conicum, Porolithon onkodes, Sporolithon ptychoides, and Titanoderma prototypum. A key for species identification is also provided in this study. Our molecular phylogenetic analyses suggest that Lithophyllum sp. corresponds to a new species. Our study also confirms that Lithophyllum kaiseri is a new record in Brazil. The psbA sequences of Lithophyllum kaiseri and Melyvonnea erubescens matched with type specimens indirectly. The taxonomic identification of the remaining species was supported by morpho-anatomical evidences as DNA sequences of their types or topotypes remain unavailable.