Patterning corrosion‐susceptible metallic alloys for digital image correlation in a scanning electron microscope

We investigate the self‐assembly of gold nanoparticles on the surface of magnesium functionalized with 3‐(aminopropyl)trimethoxysilane or 3‐(mercaptopropyl)trimethoxysilane. These nanoparticles served as a speckle pattern for high magnification deformation tracking via digital image correlation combined with scanning electron microscopy. Controlling the pH of the gold nanoparticle suspension to a specific basicity passivated corrosion in magnesium and in three of its alloys to enable proper nanoparticle bonding and self‐assembly. Magnesium was used as a model material as it is particularly difficult to modify for self‐assembly because of its propensity to quickly form a thick oxide, hydroxide, and carbonate layer in the presence of oxygen, water, and carbon dioxide, respectively. Moreover, it corrodes in acidic and slightly basic solutions, further complicating the self‐assembly process. Due to these difficulties, the successful self‐assembly of nanoparticles on magnesium has not previously been reported, to the best of the authors’ knowledge. This technique is potentially amendable to other corrosion‐susceptible materials. Gold nanoparticles were self‐assembled in a uniformly dispersed random distribution on pure cast magnesium, cast AM60 (Mg‐6Al‐0.5Mn), rolled WE43 (Mg‐4Y‐3Nd/Gd), and extruded ZE20 (Mg‐2Zn‐0.2Ce).Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/136030/1/str12215_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/136030/2/str12215.pd

Lesbians, Gays, Bisexuals, and Transgendered People and Human Resource Development: An Examination of the Literature in Adult Education and Human Resource Development

Issues related to human resource development (HRD) and lesbian, gay, bisexual, and transgender (LGBT) people such as workplace inclusion, employee affinity groups, and LGBT-specific diversity initiatives are being addressed in organizations more often now than ever before. This article explores the existing literature on LGBT issues in HRD and adult education through a systemic review to determine what research exists and what future directions are necessary. This review revealed a small core of research related to these issues. Existing work is mainly conceptual, and there is a lack of quantitative work. Topics of focus are related to organizational change and diversity efforts, with very little research on HR policy, career development, and workplace education. Key findings include that HR professionals have primarily served in a reactive role, rather than leading on these issues

Elderly learners and Massive Open Online Courses: a review

Background: Massive open online courses (MOOCs) have become commonplace in the e-learning landscape. Thousands of elderly learners are participating in courses offered by various institutions on a multitude of platforms in many different languages. However, there is very little research into understanding elderly learners in MOOCs. Objective: We aim to show that a considerable proportion of elderly learners are participating in MOOCs and that there is a lack of research in this area. We hope this assertion of the wide gap in research on elderly learners in MOOCs will pave the way for more research in this area. Methods: Pre-course survey data for 10 University of Reading courses on the FutureLearn platform were analyzed to show the level of participation of elderly learners in MOOCs. Two MOOC aggregator sites (Class Central and MOOC List) were consulted to gather data on MOOC offerings that include topics relating to aging. In parallel, a selected set of MOOC platform catalogues, along with a recently published review on health and medicine-related MOOCs, were searched to find courses relating to aging. A systematic literature search was then employed to identify research articles on elderly learners in MOOCs. Results: The 10 courses reviewed had a considerable proportion of elderly learners participating in them. For the over-66 age group, this varied from 0.5% (on the course “Managing people”) to 16.3% (on the course “Our changing climate”), while for the over-56 age group it ranged from 3.0% (on “A beginners guide to writing in English”) to 39.5% (on “Heart health”). Only six MOOCs were found to include topics related to aging: three were on the Coursera platform, two on the FutureLearn platform, and one on the Open2Study platform. Just three scholarly articles relating to MOOCs and elderly learners were retrieved from the literature search. Conclusions: This review presents evidence to suggest that elderly learners are already participating in MOOCs. Despite this, there has been very little research into their engagement with MOOCs. Similarly, there has been little research into exploiting the scope of MOOCs for delivering topics that would be of interest to elderly learners. We believe there is potential to use MOOCs as a way of tackling the issue of loneliness among older adults by engaging them as either resource personnel or learners

The Effects of Cocaine on Different Redox Forms of Cysteine and Homocysteine, and on Labile, Reduced Sulfur in the Rat Plasma Following Active versus Passive Drug Injections

Received: 28 November 2012 / Revised: 19 April 2013 / Accepted: 6 May 2013 / Published online: 16 May 2013 The Author(s) 2013. This article is published with open access at Springerlink.comThe aim of the present studies was to evaluate cocaine-induced changes in the concentrations of different redox forms of cysteine (Cys) and homocysteine (Hcy), and products of anaerobic Cys metabolism, i.e., labile, reduced sulfur (LS) in the rat plasma. The above-mentioned parameters were determined after i.p. acute and subchronic cocaine treatment as well as following i.v. cocaine self-administration using the yoked procedure. Additionally, Cys, Hcy, and LS levels were measured during the 10-day extinction training in rats that underwent i.v. cocaine administration. Acute i.p. cocaine treatment increased the total and protein-bound Hcy contents, decreased LS, and did not change the concentrations of Cys fractions in the rat plasma. In turn, subchronic i.p. cocaine administration significantly increased free Hcy and lowered the total and protein-bound Cys concentrations while LS level was unchanged. Cocaine self-administration enhanced the total and protein-bound Hcy levels, decreased LS content, and did not affect the Cys fractions. On the other hand, yoked cocaine infusions did not alter the concentration of Hcy fractions while decreased the total and protein-bound Cys and LS content. This extinction training resulted in the lack of changes in the examined parameters in rats with a history of cocaine self-administration while in the yoked cocaine group an increase in the plasma free Cys fraction and LS was seen. Our results demonstrate for the first time that cocaine does evoke significant changes in homeostasis of thiol amino acids Cys and Hcy, and in some products of anaerobic Cys metabolism, which are dependent on the way of cocaine administration

Doing ‘dangerous’ autoethnography on Islamophobic victimization

This article draws on our different experiences of employing autoethnography when researching Islamophobia, using two independent research projects. In particular, we reflect upon our experiences of Islamophobic victimization as a result of being ‘visibly’ Muslim in public spaces in the UK. We discuss our motivation for employing autoethnography and the role of our insider/outsider status in adopting the role of the Muslim ‘other’ in public spaces. Additionally, we consider the nature, extent and impact of Islamophobic victimization upon ourselves, and the coping mechanisms we employed to deal with it. The article concludes by reflecting upon the advantages, ethical challenges and limitations of using autoethnography when researching Islamophobic victimization