Post-synthetic modification of metal–organic frameworks

Post-synthetic modification (PSM) of metal-organic frameworks encompassing the chemical transformation of the linker present is a promising new route for engineering optical centres and tuning the light emission properties of materials, both in the visible and in the near infrared (NIR) spectral regions. Here, PSM of isoreticular metal-organic framework-3 (IRMOF-3) with ethyl oxalyl monochloride, ethyl acetoacetate, pentane-2,4-dione, 3-(2- hydroxyphenyl)-3-oxopropanal, 2-chloroacetic acid, glyoxylic acid, methyl vinyl ketone and diethyl (ethoxymethylene)malonate followed by chelation of trivalent lanthanide ions afforded intriguing near infrared (Nd3+) and visible (Eu3+, Tb3+) light emitters. IRMOF-3 was used as a case in point due to both its highly porous crystalline structure and the presence of non-coordinating amino groups on the benzenedicarboxylate (bdc) linker amenable to modification. The materials were characterised by elemental analysis, powder X-ray diffraction, optical, scanning and transmission electron microscopy, Fourier transform infrared spectroscopy, and liquid and solid-state nuclear magnetic resonance. The solid-state luminescence properties of Ln-modified-IRMOF-3 were investigated at room temperature. The presence of the bdc aromatic ring, β– diketonate and oxalate enhanced the Ln3+ sensitization via ligand-to-metal energy transfer (anthena effect). As far as photocalysis is concerned, we have synthesized metal−organic frameworks (Cr-MIL-125-AC, Ag-MIL-125-AC) by a green method (solid–vapors reactions). The resulting functionalized materials show a photocatalytic activity for methylene blue degradation up to 6.52 times larger than that of the commercial photocatalyst hombikat UV-100. These findings open the door for further research for improving the photocatalytic performance of metal-organic frameworks.

Crafting Modern Design in Italy, from Post-War to Postmodernism

The years between 1945 and the early 1980s are the most celebrated in Italy’s design history. From the rhetoric of reconstruction to the postmodern provocations of the Memphis design collective, Italy’s architects played a vital role in shaping the country’s encounter with post-war modernity. Yet as often as this story has been told, it is incomplete. Craft was vital to the realisation of post-war Italian design, and an area of intense creativity in its own right, and yet has been marginalised and excluded in design historiography.

Teacher education in the United Kingdom post devolution: convergences and divergences

This paper examines the roles of research in teacher education across the four nations of the United Kingdom. Both devolution and on-going reviews of teacher education are facilitating a greater degree of cross-national divergence. England is becoming a distinct outlier, in which the locus for teacher education is moving increasingly away from Higher Education Institutions and towards an ever-growing number of school-based providers. While the idea of teaching as a research-based profession is increasingly evident in Scotland, Northern Ireland and Wales, it seems that England, at least in respect of the political rhetoric, recent reforms and explicit definitions, is fixed on a contrastingly divergent trajectory towards the idea of teaching as a craft-based occupation, with a concomitant emphasis on a (re)turn to the practical. It is recommended that research is urgently needed to plot these divergences and to examine their consequences for teacher education, educational research and professionalism.

Seismic retrofitting of RC buildings using CFRP and post-tensioned metal straps: shake table tests

This article examines the effectiveness of two innovative retrofitting solutions at enhancing the seismic behaviour of a substandard reinforced concrete building tested on a shake table as part of the Pan-European funded project BANDIT. To simulate typical substandard construction, the reinforcement of columns and beam-column joints of the full-scale structure had inadequate detailing. An initial series of shake table tests were carried out to assess the seismic behaviour of the bare building and the effectiveness of a first retrofitting intervention using Post-Tensioned Metal Straps. After these tests, columns and joints were repaired and subsequently retrofitted using a retrofitting solution consisting of Carbon Fibre Reinforced Polymers and Post-Tensioned Metal Straps applied on opposite frames of the building. The building was then subjected to unidirectional and three-dimensional incremental seismic excitations to assess the effectiveness of the two retrofitting solutions at improving the global and local building performance. The article provides details of the above shake table testing programme and retrofitting solutions, and discusses the test results in terms of the observed damage, global damage indexes, performance levels and local strains. It is shown that whilst the original bare building was significantly damaged at a peak ground acceleration (PGA) of 0.15g, the retrofitted building resisted severe threedimensional shake table tests up to PGA=0.60g without failure. Moreover, the retrofitting intervention enhanced the interstorey drift ratio capacity of the 1st and 2nd floors by 160% and 110%, respectively. Therefore, the proposed dual retrofitting system is proven to be very effective for improving the seismic performance of substandard buildings.

Full-Scale Shaking Table Tests on a Substandard RC Building Repaired and Strengthened with Post-Tensioned Metal Straps

The effectiveness of a novel Post-Tensioned Metal Strapping (PTMS) technique at enhancing the seismic behaviour of a substandard RC building was investigated through full-scale shake-table tests during the EU-funded project BANDIT. The building had inadequate reinforcement detailing in columns and joints to replicate old construction practices. After the bare building was initially damaged significantly, it was repaired and strengthened with PTMS to perform additional seismic tests. The PTMS technique improved considerably the seismic performance of the tested building. Whilst the bare building experienced critical damage at an earthquake of PGA=0.15g, the PTMS-strengthened building sustained a PGA=0.35g earthquake without compromising stability.

“Should we all be on Marx’s side?” Contributions of post-marxist discourse theory to the historiography of communism

Drawing on post-marxist discourse theory inspired by the writings of Ernesto Laclau and Chantal Mouffe, this article puts the case for a literature on communism situated at the crossroads of critical theory, cultural studies and historiography. Specific illustration is provided by the author's own research on British communism and the Spanish Civil War. However, the scope of the article is much broader and it is intended as a contribution to the theoretical discussion of future possibilities for communist history-writing. The article concludes that discourse should be regarded neither as a flat surface of tightly knit signifiers nor as an impenetrable monolith of meaning systems. Rather, it should be seen as an inherently dynamic phenomenon, with its own condensations and dispersions along the historical continuum. In this lies its significance for historians of communism.

Examining how post-secondary L2 readers make use of background knowledge when reading literary texts an exploratory study

Literary texts offer rich opportunities for language learning. However, can second language (L2) learners fully understand L2 literary texts? According to Bernhardt (2001):"the act of reading in a second language is extremely tricky -- is even trickier with literary texts that are inherently ambiguous, full of metaphor and intertextual relations to texts to which the readers have no access" (p.198). In other words, L2 readers are often poorly equipped grammatically, linguistically and culturally to cope with literary texts in which it might be difficult to recognize figurative language, to comprehend metaphors, to identify underlying cultural assumptions and above all to think critically while navigating those complexities. Therefore, during the reading process, L2 readers encounter gaps in the text which necessarily compel them to use whatever background knowledge they possess in order to create meaning. The purpose of this research is to see exactly how post-secondary L2 readers use their existing background knowledge to understand literary texts and what they do when confronted with text passages for which they lack such knowledge.

Évaluation prospective de l’état nutritionnel et risque de complications post-opératoires de la cystectomie radicale

La cystectomie radicale est le traitement de référence pour les cancers de la vessie infiltrant le muscle. Cette chirurgie entraine un taux élevé de complications et diminue la qualité de vie des patients à court et à long terme. Une revue de la littérature a d’abord été effectuée afin d’identifier les facteurs de l’état nutritionnel associés au risque de complications et de mortalité après la cystectomie radicale. L’hypoalbuminémie a été identifiée comme un prédicteur potentiel de la mortalité post-opératoire. Une étude de cohorte a ensuite été menée afin d’identifier des facteurs de l’état nutritionnel associés au risque de développer des complications après cette chirurgie. Un indice de masse corporelle élevé, une baisse de l’appétit, une perte de poids, une hypo-albuminémie et une hypo-préalbuminémie avant l’opération sont les facteurs qui ont été associés au développement de complications post-opératoires. Des analyses et des études supplémentaires doivent être menées dans l’optique développer des interventions qui pourraient diminuer le risque de complications après la cystectomie radicale.

Conflit sexuel et polyandrie de la commodité chez une espèce polygynandre: les effets combinés des processus pré- et post- copulatoires sur le succès reproducteur de "Gerris buenoi"

Chez les patineurs, des processus postcopulatoires sont documentés et un conflit sexuel sur le taux d’accouplement est démontré. Cependant, leurs effets combinés sur le succès reproducteur ont rarement été investigués. Cette étude joint une analyse de filiation génétique à des observations comportementales pour évaluer l’effet des processus pré- et post- copulatoires sur le succès reproducteur de Gerris buenoi. Nos résultats montrent la nature antagoniste des combats précopulatoires et un niveau de résistance optimal intermédiaire pour les femelles. Cependant, le taux d’accouplement n’a eu aucune influence sur le succès reproducteur des deux sexes. Un taux d’accouplement élevé permettant à des processus postcopulatoires de se mettre en place ainsi que plusieurs copulations superflues ont vraisemblablement masqué les effets attendus du taux d’accouplement. Notre étude confirme l’idée que des précisions peuvent être apportées sur les forces de sélection sexuelle en jeu lorsque l’on considère tous les épisodes d’un cycle d’accouplement chez les animaux polygynandres.

Unbelievable Bodies: Audience Readings of Action Heroines as a Post-Feminist Visual Metaphor

Thesis (Master's)--University of Washington, 2013

Enhancing extractive summarization with automatic post-processing

Tese de doutoramento, Informática (Ciência da Computação), Universidade de Lisboa, Faculdade de Ciências, 2015

Double-trouble: Negotiating Gender and Sexuality in Post-colonial Women’s Rugby in Fiji

Although women’s exclusion in sport has attracted significant attention in the western context, similar issues in relation to post-colonial societies have remained in the margins of the sociology of sport. By analysing primary, interview-based evidence, in this article we explore the challenges female rugby players face regarding gender and sexuality in Fiji; a male dominated post-colonial society. In particular, we focus on participants’ resistance to dominant cultural practices and ways in which they (re)negotiate gender norms and sexuality in a double-bind struggle against both traditional and sporting male hegemonies. We argue that the case of Fijian women rugby players illustrates an interplay between a multiplicity of power relations in sport in a post-colonial society and the resilience with which the athletes negotiate and respond to them, as well as the dynamic nature and the transformative potential of their everyday practices.