1,720,994 research outputs found
Stable Positive Current Collectors for Li||SbSn Liquid Metal Batteries
No full textThe
corrosion of a liquid Sb–Sn alloy on a positive current
collector (PCC) can seriously affect the performance of Li||Sb–Sn
liquid metal batteries (LMBs) and hinder their industrial applications.
This work systematically investigated Ti, Mo, and W as the PCCs of
Li||Sb–Sn LMBs corrosion behaviors and electrochemical properties.
The corrosion mechanism and cell performance recession reason are
illuminated based on compatibility analysis and electrochemical measurements.
Ti and Mo are more easily dissolved in the liquid Sb–Sn alloy
than W, forming Ti–Sb–Sn and Mo–Sb–Sn
corrosion products. The average corrosion rates of Ti, Mo, and W in
the liquid Sb-Sn alloy are 0.105, 0.068, and 0.014 mm/a, respectively.
These corrosion behaviors not only affect the cell voltage and capacity
to varying degrees but also may cause potential security liability.
Hence, W is an admirably stable PCC of Li||Sb–Sn LMBs, which
can also serve as an electroconductive and corrosion-resistant protective
coating to reduce cost and solve the forming problem
Low-Temperature and High-Energy-Density Li-Based Liquid Metal Batteries Based on LiCl–KCl Molten Salt Electrolyte
No full textLi-based
liquid metal batteries (LMBs) have attracted widespread
attention due to their potential applications in sustainable energy
storage; however, the high operating temperature limits their practical
applications. Herein, a new chemistryLiCl–KCl electrolyte
and Sb–Bi–Sn (Pb) positive electrodeis reported
to lower the operating temperature of Li-based LMBs and achieve a
high energy density. We have investigated the compatibility between
low-melting-point LiCl–KCl molten salt and Li and found that
the displacement reaction between LiCl–KCl and Li would decrease
the KCl content. Addition of a small amount of K to Li can inhibit
this displacement reaction and maintain the stability of the molten
salt composition, thereby significantly improving the cycling stability
of the batteries at a low operating temperature (400 °C). Specifically,
the LiK|LiCl–KCl|Sb30Bi40Sn30 LMB exhibits a high energy density of about 241 W h kg–1 and a low material cost of about 68.8 kW h–1. We propose that this work can open new directions toward designing
and developing innovative LMBs for sustainable energy storage
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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