1,721,435 research outputs found
Muslim pasts and presents: Displacement and city-making in a Delhi neighbourhood
No full textAbstract Through an engagement with the histories of Muslim pasts, presences, and absences in the locality of Jangpura-Bhogal in the Indian capital city of Delhi, this article examines the constitutive relationship between displacements and city-making. It addresses Jangpura-Bhogal's post-colonial history (1947–present) through instances of the erasure of Muslim property, spaces, and histories, and the reoccupations, replacements, and redefinition of spaces, properties, and memories that they constituted. The article shows how protracted material displacements of Muslim property and spaces have contributed to the erasure of a Muslim historical presence from Jangpura-Bhogal. By tracing the afterlives of these material displacements, it tracks how narrative discourses draw on these Muslim absences and the sense of an abstract ‘diverse space’ to produce new sets of exclusions and practices of Othering in the present. The discussion focuses on the processual/everyday, ‘below the radar’, and, at times, invisible displacements, more than sudden eruptions of violence or overt ideological projects aimed at a deliberate Muslim erasure. Thus, Delhi's post-colonial history is not only about the well-rehearsed story of migrations and arrivals but equally about departures and displacements that have produced the neighbourhood and the city as particular kinds of majoritarian places and spaces. Current acts of Muslim displacement, that is, the Delhi ‘riots’ of February 2020 are enabled not only through visible and violent histories of Muslim marginalization, but also by longer histories of non-overt erasures, displacements, and replacements
The impact of PCR in the management of prosthetic joint infections
No full textAn accurate diagnosis of prosthetic joint infection (PJI) remains a challenging clinical problem and is essential for the success of treatment regardless of the treatment option chosen by patients and surgeons. In recent years, PCR for the diagnosis of PJI has received much attention. Here, we review the impact of common PCR-based techniques on identifying causative organisms, antibiotic management and economics of PJI
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
sj-docx-1-wmr-10.1177_0734242X221080084 – Supplemental material for Fe-POM/attapulgite composite materials: Efficient catalysts for plastic pyrolysis
No full textSupplemental material, sj-docx-1-wmr-10.1177_0734242X221080084 for Fe-POM/attapulgite composite materials: Efficient catalysts for plastic pyrolysis by Saira Attique, Madeeha Batool, Oliver Goerke, Ghayoor Abbas, Faraz Ahmad Saeed, Muhammad Imran Din, Irfan Jalees, Irfan Ahmad, Duncan H Gregory and Asma Tufail Shah in Waste Management & Research</p
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Aerosol CVD synthesis and applications of single-walled carbon nanotube thin films using spark-discharged produced catalyst
No full textThe public defense will be organized on 17th April 2020 at 12:00 via remote technology.
Link: https://aalto.zoom.us/j/7615938115
Zoom Quick Guide: https://www.aalto.fi/en/services/zoom-quick-guideStructural controlled synthesis of single-walled carbon nanotubes (SWCNTs) have attracted a great deal of attention due to their widespread potential applications in electronics and photonics. Floating catalyst chemical vapor deposition (FC-CVD) being a dry and continuous method, is a highly promising technique for the scalable synthesis of SWCNTs. However, due to in-situ catalyst formation in all the conventional FC-CVD approaches, it is hard to get full control of number concentration, composition and size of nanoparticles. Hence, it hinders to investigate the effects of catalyst composition on morphology, yield and structure of SWCNTs.
In this thesis, firstly we designed a novel rod-to-tube type spark discharge generator (R-T SDG) to produce ex-situ catalyst nanoparticles for the FC-CVD growth of SWCNTs. We utilized highly time-stable and uniform number size distributions of monometallic (Fe, Ni, Co) and bimetallic (Co-Fe, Co-Ni) catalyst particles for the synthesis of SWCNTs using ethylene as carbon source and 1050 deg C temperature. Optical characterizations revealed that as-grown SWCNTs have high-quality and their mean diameter is around 1 nm. The highest SWCNTs yield was obtained with Fe as a catalyst. From electron diffraction analysis, we observed that Co-Ni can produce comparatively narrower chirality and diameter distribution of SWCNTs.
Secondly, we introduced sulfur in the FC-CVD reactor as a growth promoter for the fabrication of SWCNTs based transparent conducting films (TCFs). We systematically investigated the roles of sulfur on yield, morphology, and structure of SWCNTs. It was found that the yield of SWCNTs is largely dependent on amount of sulfur introduced into the FC-CVD reactor and catalyst composition. More importantly, the addition of an optimized amount of sulfur has enhanced approximately three times, the opto-electronic performance of SWCNT-TCFs, by increasing diameter and bundle length along with improving the quality of SWCNTs. The mean diameter of SWCNTs increased from 1 nm to 1.2 nm while the ratio of metallic nanotubes slightly increased from 39 % to 41 % with sulfur addition. Surprisingly, chirality determination of as-grown SWCNTs indicated that sulfur promotor has little influence on modulating the chirality of SWCNTs.
Finally, we demonstrated that FC-CVD is a unique and versatile technique for the simultaneous growth of substrate-free 0D-fullerene, 1D-CNT and 2D-graphene. The formation of 0D-1D-2D carbon nanostructures were directly evidenced by lattice-resolved (scanning) transmission electron microscopy (STEM). We showed that the relative number density of graphene-nanoflakes can be tuned by optimizing the synthesis conditions. In addition, the as-synthesized hybrid films can be directly deposited on any surface at ambient temperature with an arbitrary thickness which offers a new route towards ultra-fast manufacturing and dry deposition of the hybrid structures
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