1,720,959 research outputs found
Novel photo-chemoautotrophic system combining microalgae and hydrogen oxidizing bacteria for microbial protein production from carbon dioxide
Full text linkThis study investigated the production of microbial protein (MP) using a novel microbial consortium composed of microalgae and hydrogen-oxidizing bacteria (HOB). This photo-chemoautotrophic consortium was aimed at capturing and valorising carbon dioxide (CO2) while overcoming typical limitations of each microbial group. Batch tests were run under varying gas mixtures of oxygen (O2), CO2 and hydrogen (H2) to assess process performance in terms of biomass growth, nitrogen assimilation, gas consumption, final biomass and microbial community composition. The consortium was compared to the single microalgae and HOB cultures grown under photo- and chemoautotrophic conditions, respectively. The consortium achieved significant growth (5.5 g VSS/L) under a non-explosive gas mixture, reaching a protein content of 40.3 ± 8.5 %. The consortium achieved up to 1.8- and 10-times higher biomass growth compared to the single microalgae and HOB cultures, respectively, showing a higher CO2 consumption and stimulating photosynthetic O2 production
Decodificare per riscrivere la storia del patrimonio tecnico. Il caso Anic di Pisticci/Decode to rewrite the history of technical heritage. The Anic of Pisticci
No full textNel secondo dopoguerra, in Italia, prende il via un processo di industrializzazione che reca con sé la nascita di nuovi ‘brani urbani’, i quartieri operai. Tra questi un posto di rilievo lo occupano i quartieri dell’ANIC di Enrico Mattei. Il contributo illustra il quartiere ANIC di Pisticci (MT) proponendo una modalità di ri-lettura dei suoi caratteri fondanti in relazione alla storia di un patrimonio poco conosciuto ma testimone importante della cultura e dello sviluppo socio-tecnico del Mezzogiorno
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
From cement mixtures to architectural stone surfaces. Titanium dioxide applications between recent history and evolution
No full textOn the international scene, the goals of reducing energy consumption and environmental sustainability require innovative strategies, technologies, and materials, capable of reacting to environmental stimuli.
This paper traces an evolutionary path of the applications of titanium dioxide on the surfaces of new and existing buildings in order to trace the history of a technology, which follows a 1967 discovery by Professor Akuira Fujishima of the University of Tokyo. Concretes and coatings containing titanium dioxide nanoparticles take on an active behavior, making the material intelligent or capable of reacting to light stimuli, through reactions activated by light that occur on a nanometric scale. The conditions of super-hydrophilicity alternating with those of super-hydrophobicity under solar radiation make the materials self-cleaning and anti-pollution.
In 1996, the Dives in Misericordia Church was designed, a work by Meier built in 2003 on the outskirts of Rome, which constitutes an emblematic application of self-cleaning and anti-polluting concrete. A few years later, new research horizons were defined and this nanotechnology gained experimentation and applications in the field of cultural heritage, significantly revising the concept of minimal invasiveness. Starting from natural photochemical reactions, not visible to the naked eye, some applications of titanium dioxide are described through national and international case studies
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