1,721,037 research outputs found
Book Review on Ritual and Art: Matthew P. Canepa. (2009). The Two Eyes of the Earth:Art and Ritual of Kingship between Rome and Sasanian Iran.
No full textAuthor Matthew P. Canepa details the visual material in cultural context with other uttering elements, rituals and power, about Sasanian and Roman royal interaction
European Summer School "Production of fuels, specialty chemicals and biobased products from agro-industrial wastes and surplus"
No full textThe chemical industry developed over the past century using petroleum as its primary feed-stock. A number of economical, political and social forces are now leading the chemical industry to consider renewable plant-based feed-stocks in addition to/instead of petroleum, which is going to be available on the market at acceptable costs only up to 2040. Agro-industrial wastes, residues and surplus, which are generated at amounts higher than 100 trillions kg per year, provide a low-cost and uniquely sustainable resource for production of some fuels and chemicals currently produced from fossil sources. Bio-based products obtainable from such sources fall generally into three categories: a) commodity chemicals, including fuels such as ethanol, methane, hydrogen, etc.; b) specialty chemicals, such as amino acids, vitamins, antioxidants,
flavours and flagrances, chiral compounds, etc. and c) biomaterials, such as biopolymers, cellulose, oils, lignin, etc. Some of these products are directly obtained from the agro-industrial wastes or surplus through tailored recovery procedures whereas others are obtained through chemical and in particular biological processing of main biomass components.
The costs of bio-based products are often relatively high, mostly for the fact that the industry dealing with their production is still underdeveloped and dominated by processing costs. Such costs can be significantly reduced by intensifying the research and development activities in the field. This in turn requires the education of the public and policymakers and in particular of the personnel involved in the product and process design and development. In fact, such processes generally consist of a sophisticated combination of different principles and instruments of the modern biology, chemistry and engineering sciences, and therefore their design, development, and management require a broad and interdisciplinary background that is often not provided by the current EU University programs.
On September 4, 2006, a total of 32 selected young European scientists and engineers coming from 8 different EU Countries and 1 non-EU countries along with 27 Lecturers coming from 11 different EU countries participated in the 5 days-International Summer School entitled “Production of fuels, specialty chemicals and biobased products from agro-industrial wastes and surplus”, held at the Faculty of Engineering of the University of Bologna. The school was sponsored by the Alma Mater Studiorum-University of Bologna (Italy) and the Italian Interuniversity Consortium “Chemistry for the Environment”, INCA (Venice, Italy). Marcopolo Environmental Group SpA (Borgo S. Dalmazzo, Cuneo, Italy), the Interdivisional Catalysis Group, Italian Chemical Society (Milan, Italy) and Novamont SpA (Novara, Italy) also supported the school organization. This school was specifically addressed to provide to selected scientists and engineers a critical overview on the industrial processes currently applied to produce bio-based molecules and products along with biofuels from agro-industrial
wastes and surplus and on the main objectives and challenges of the research in progress in this field. Additional specific issues related to the sector have been presented by the participants through 16 posters; 6 of them have been selected as best
posters by a committee composed by all school lecturers and have been presented and discussed orally during the last section of the school. This book provides a summary of the key information presented and discussed at the school. We believe that this collection of lessons may be useful to people who were not able to participate directly. It is towards those individuals that it is directed
Production of optically pure molecules by biotransformation of agro-food wastes.
No full textBiocatalysis is nowadays an established technology for the production of chemicals. Biotransformations are performed under mild conditions and can be highly selective; Biocatalysts are currently employed for the production of products in different fields, such as pharmaceuticals or intermediate for their production (e.g., antibiotics, statins, enantiomerically pure building blocks), fine chemicals (e.g., aminoacids, vitamins) and food manufacture (e.g., sweeteners, lipids, nutraceuticals). Stereoselectivity is a key-issue in most of the bioprocesses developed for transformations of organic molecules. Methods based on biocatalysis can further broaden their applicability and meet criteria of sustainability if efficiently employed for the transformation of cheaply available agro-food wastes and surplus, such as starch, molasses, cheap proteins and lipids. The application of recombinant technologies and protein engineering has dramatically widened the potential of biotransformations. Examples of classical and new bioprocesses are reported, highlighting the improvements given by an integrated application of different strategies (molecular biology, extractive systems, immobilization etc.) for their optmization
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
Matthew P. Canepa, The Two Eyes of the Earth. Art and Ritual of Kinship between Rome and Sasanian Iran, (The Joan Palevsky Imprint in Classical Literature. The Transformation of the Classical Heritage, 45) 2009
No full textChauvot Alain. Matthew P. Canepa, The Two Eyes of the Earth. Art and Ritual of Kinship between Rome and Sasanian Iran, (The Joan Palevsky Imprint in Classical Literature. The Transformation of the Classical Heritage, 45) 2009. In: L'antiquité classique, Tome 80, 2011. pp. 544-547
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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