1,721,858 research outputs found
sj-docx-3-tag-10.1177_17562848231184056 – Supplemental material for Effects of Crohn’s disease exclusion diet on remission: a systematic review
No full textSupplemental material, sj-docx-3-tag-10.1177_17562848231184056 for Effects of Crohn’s disease exclusion diet on remission: a systematic review by Zhanhui Zhu, Yang Lei and Zheng Lin in Therapeutic Advances in Gastroenterology</p
sj-docx-2-tag-10.1177_17562848231184056 – Supplemental material for Effects of Crohn’s disease exclusion diet on remission: a systematic review
No full textSupplemental material, sj-docx-2-tag-10.1177_17562848231184056 for Effects of Crohn’s disease exclusion diet on remission: a systematic review by Zhanhui Zhu, Yang Lei and Zheng Lin in Therapeutic Advances in Gastroenterology</p
sj-docx-1-tag-10.1177_17562848231184056 – Supplemental material for Effects of Crohn’s disease exclusion diet on remission: a systematic review
No full textSupplemental material, sj-docx-1-tag-10.1177_17562848231184056 for Effects of Crohn’s disease exclusion diet on remission: a systematic review by Zhanhui Zhu, Yang Lei and Zheng Lin in Therapeutic Advances in Gastroenterology</p
Synthesis and characterization of molybdenum based nanocomposites film for water splitting applications / Choong Zheng Lin
No full textThe molybdenum-based nanocomposite films in the form of Mo2S3/MoP2 composite were prepared by using AACVD method with the single source precursor of [CpMo(CO)2(S2P(SPhMe)2)] (1) (Cp = C5H5) in THF at 0.01 M under argon gas flow in different deposition conditions inclusive of different deposition temperatures (450 °C, 550 °C, 650 °C), duration of deposition time (20 mins, 30 mins and 40 mins), different volume of precursor solution (10, 15, 20 and 25 mL) and carrier gas flow rate (0.3 and 0.5 SCFH). The bandgap energy values obtained in the visible light spectrum were close to the literature values for Mo2S3 and MoP2 at ~2.3 eV and ~2.8 eV, respectively. The deposition conditions had no significant effect on the band gap of the films. Among all the films synthesized for this study, the 20 ml/30 mins film fabricated at 550 °C with carrier gas flow rate of 0.3 SCFH generated the best current density of 10 mA/cm2 at 250 mV due to wide distribution of MoP2 grains across the film, which promoted significant interaction between Mo2S3 and MoP2 particles in the heterojunctions that provide sufficient amount of active sites for catalysing hydrogen evolution reaction (HER). With a favourable surface roughness, Rq of 106.4 nm resulted from suitable mean particle size of 1000-3000 nm coupled with film thickness of 968 nm had provided the film with abundance of active sites, which have the propensity to undergo HER reaction in 0.25 M H2SO4 acidic media (pH 0.95) owing to a low electron transport resistance of 0.715 kΩ. Based on the Tafel slopes, the approximate overall extracted values of 120 mV/dec for all the fabricated films indicated that Volmer reaction was the rate determining step in HER. Films fabricated at 450 °C with different volumes of precursor solution and deposition times were chosen as a study model for electrochemical studies in alkaline media prepared by mixing 0.25 M of Na2S and 0.35M of Na2SO3 (pH 11.71). It was found that oxygen evolution reaction (OER) was more significant than HER in alkaline media. However, the 20 mL/20 mins film fabricated at 450 °C with the carrier gas flow rate of 0.5 SCFH exhibited a large Tafel slope of 190 mV/dec and a very large onset potential of 1.14 V in OER. Therefore, Mo2S3/MoP2 composite material may not be a suitable electrocatalyst for OER activity in alkaline media. The electrochemical studies from fabrication of films under different synthesis conditions mentioned above via AACVD could be applied to determine an appropriate morphology that is suitable as electrocatalysts for water splitting application
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“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
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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