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일산화질소의 전기화학적 환원으로부터 암모니아의 생산을 위한 전기촉매 개발
No full textNitric Oxide Reduction Reaction, Ammonia Production, Core-shell Nanostructure, Metal Phosphide Nanocluster, Non-noble Metal CatalystsList of Contents
Abstract i
List of Contents ii
List of Tables v
List of Figures vi
CHAPTER 1. INTRODUCTION 1
1.1. Background 1
1.1.1. Nitric Oxide 1
1.1.2. Ammonia 2
1.2. Conventional Haber-Bosch Process 3
1.3. Electrochemical Ammonia Synthesis from Nitric Oxide 4
1.4. Nitric Oxide Reduction Reaction Mechanisms 5
1.5. Types of Cell Configurations for Nitric Oxide Reduction Reaction 7
1.5.1. H-type Batch Cell 7
1.5.2. Zn-NO Battery 8
1.6. Literature Survey and Current Issues 9
1.7. Objectives of This Research Work 12
CHAPTER 2. EXPERIMENTAL SECTION 14
2.1. Synthesis of Core-Shell Ni@NC Electrocatalyst 14
2.1.1. Materials 14
2.1.2. Synthesis of Covalent Organic Framework (RIO-12) 14
2.1.3. Synthesis of Ni@RIO-12 15
2.1.4. Synthesis of COF-derived Core-Shell Electrocatalysts 16
2.1.5. Synthesis of Nickel Nanoparticle Electrocatalysts 16
2.1.6. Synthesis of NC Electrocatalysts 17
2.2. Synthesis of Atomically Dispersed Cu3P embedded in N-doped carbon nanorods
(Cu3P/NCNR) Catalyst 17
2.2.1. Chemicals and Materials 17
2.2.2. Preparation of Cu3P Catalyst by Electrospinning method 18
2.2.3. Preparation of Control Samples 19
CHAPTER 3. CHARACTERIZATION 20
3.1. Instrumentation 20
3.2. Electrochemical Measurements 20
3.3. Zn-NO Battery. 22
3.4. Fabrication of Electrode 22
3.5. Nafion Membrane Pretreatment 23
3.6. Electrochemical Active Surface Area 23
3.7. Product Quantification 23
3.8. Quantification of NH3 (Indophenol Blue Method) 24
3.8.1. Quantification of NH2OH 25
3.8.2. Quantification of N2H4 (Watt and Chrisp method) 26
3.8.3. 1H NMR Quantification of NH3 27
3.8.4. Quantification of H2 29
3.9. Equations used for the Calculation 30
3.9.1. NH3 yield rate 30
3.9.2. Faradaic Efficiency 30
3.9.3. Turnover Frequency 31
CHAPTER 4. RESULT AND DISCUSSION 32
4.1. Development of Core-shell Nanostructures as High-performance Electrocatalysts for
NH3 Synthesis at Low Overpotentials 32
4.1.1. Physicochemical Characterization 32
4.1.2. Morphology Analysis 33
4.1.3. Surface Composition and Electronic Structure (XPS Analysis) 36
4.1.4. Raman Analysis 38
4.1.5. Electrochemical Characterization 39
4.1.6. Elucidating the Nature of the Active Site 45
4.1.7. Identification of N-source and Optimization of Catalyst Loading 47
4.1.8. Stability Performance 48
4.1.9. Post-NORR Study for Ni@NC-700 to Evaluate the Chemical and Morphological
Features. 50
4.1.10. Summary. 52
4.2. Efficient Electrosynthesis of NH3 from NO Reduction Over Atomically Dispersed
Cu3P Nanocluster in N-doped Carbon Nanorod Catalysts 53
4.2.1. Structural Analysis 53
4.2.2. Morphological Analysis 54
4.2.3. Surface Chemical Composition and Nature of Carbon 59
4.2.4. Elemental Analysis 63
4.2.5. Electrochemical NORR Activity of Cu3P/NCNR catalyst 64
4.2.6. GC Quantification of H2 70
4.2.7. 1H NMR Quantification of H2 70
4.2.8. Investigation of Intrinsic Catalyst Property 73
4.2.9. Elucidating the Nature of the Active Site and Identification of N-Source 74
4.2.10. Effect of Catalyst Loading on GDE 77
4.2.11. Robustness of Cu3P/NCNR-2 and Post-Analysis Study 78
4.2.12. Zn-NO Battery Performance 84
4.2.13. Summary. 87
CHAPTER 5. CONCLUSION 88
References 90MasterdCollectio
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
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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