1,720,973 research outputs found
SURFACE DYNAMIC OF COPPER NITROPRUSSIDE AS A CATHODE MATERIAL: OBSERVATION BY XPS AND SEM
No full textElectrosynthesis of Layered Double Hydroxides as active materials for sensing, energy, and catalysis
No full textTHE UNCOMMON ELECTROCHEMISTRY OF COPPER NITROPRUSSIDE DISCLOSED BY SPECTROSCOPIC AND DIFFRACTION TECHNIQUES
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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
Eco-friendly hybrid capacitor based on Ni/Al Layered Double Hydroxide and reduced Graphene Oxide composites
No full textThe peculiar redox mechanism of copper nitroprusside disclosed by a multi-technique approach
No full textOn the Quest for Oxygen Evolution Reaction Catalysts Based on Layered Double Hydroxides: An Electrochemical and Chemometric Combined Approach
Full text linkThe oxygen evolution reaction (OER) is a crucial process in various energy conversion and storage technologies, such as water electrolysis. Developing efficient and cost-effective electrocatalysts is essential to achieve the com-mercialization of devices for the transition toward sustainable energy solu-tions. Herein, ternary layer double hydroxides (LDHs) are synthesized and characterized as electrocatalysts for OER using a potentiodynamic electro-chemical deposition method on Grafoil. A chemometric approach based onexperimental design is employed to rationalize the effort in the investigation ofthe LDHs which are based on Ni, Co, and Fe. The deposited films are char-acterized using cyclic voltammetry and X-ray diffraction to determine peakcurrents and potentials, and crystal size. Furthermore, the electrocatalyst performances are assessed by linear sweep voltammetry in 1M KOH fromwhich the Tafel slope and onset potential are calculated. The obtained data areused to derive models describing the material properties and electrocatalyst performance as a function of the electrolyte composition used during the LDHs electrodeposition. This study provides valuable insights into the relationship between the electrocatalyst composition and its OER activity, enabling the design of more efficient and sustainable electrochemical systems for energy applications
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
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