1,720,982 research outputs found
Book Review Nanofiber Membranes for Medical, Environmental, and Energy Applications 1st Edition
No full textThe book gathered latest discovery solutions from experts all over the globe who specialize in nanofiber membrane technology. The effort and knowledge sharing by the experts on the recent development of nanofiber membraneâs fabrication, characterization, and performance for medical, environment and energy applications are greatly appreciated. This book provides readers with a holistic cycle of nanofiber membrane development, which comprehensively deliberates on how nanofibers incorporation affects the membrane formation, enhance the properties and performance of membranes and ultimately lead to different kinds of applications. There are thirteen chapters in the book, covering topics comprise of polymer, inorganic and composite-form of nanofiber membrane materials for a wide range of applications (e.g., liquid, gas and energy). Each chapter starts with a brief introduction on the particular topic, followed by the nanofiber membraneâs production, characterization, performance and potential application of the nanofiber membranes. Challenges and future prospect are also well discussed in most of the chapters, providing rational perspective for the use of advanced nanofiber membranes in real world. The book comes with comprehensive discussion on nanofiber membranes form various applications such as medical (e.g. antimicrobial, biomedical, tissue engineering and regenerative medicine), water and wastewater treatment (e.g. membrane distillation, heavy metal, and toxic removal), and energy (e.g. fuel cell and ion exchange membranes). This could also give a clear picture on the trend of advanced materials as the way forward for the mentioned applications. Interestingly, this book shares a structured overview on recent achievements of nanofiber membranes in medical application, particularly on the electrospun as regenerative medicine for potential use in wound, vascular, nervous, bone, and dental applications. Besides that, it also discusses on fabrication of nanoscale fibrous scaffolds that mimic the natural extracellular matrix (ECM) of our body and enhance cell attachment, drug loading, and mass transfer that able to potentially improve care for millions of patients who suffered from inadequate medical treatments. This book also highlighted on the potential use of modified nanofiber membranes for wastewater treatments including superhydrophobic/superoleophilic nanofiber membranes and superhydrophilic/superoleophobic nanofiber membranes as type of superwetting materials. Detail discussion on conventional and latest development of membrane distillation for desalination and water treatment process, including fundamental concepts, operating principles and the future perspectives are also included in the book. There are three chapters in the book that discussed on the application of nanofiber membrane fabrication for energy generation. These include discussion on lithium-ion batteries, solar cells, dye-sensitized solar cells, supercapacitors, hydrogen storage and pressure-retarded osmosis, fabrication of nanocomposite polymer electrolyte membrane for fuel cell applications and also nanofibers ion exchange membranes. One of the highlight of this book is a chapter on fabrication of advanced mesoporous nanofiber networks by phase separationâbased methods, which employing flash-freezing nanocrystallization technique, and this technique is getting more attention in recent research literatures. Most importantly, this book does come along with intensive explanation on the working mechanism of separation and purification of the nanofiber membranes. Overall, this book is well written, and it serves as a platform for knowledge sharing, and I extremely recommend this book to students, academicians, researchers and industrial players. It is suggested that in future edition, every chapter in this book will be substantially enhanced and updated to reflect the latest developments in the fields. Besides that, wide range of research scopes pertaining nanofiber membrane fabrication for medical, environmental, and energy applications is also recommended to be further highlighted and reviewed
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
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