6,041 research outputs found
Audiomobiles, Sculptures and Conundrums
No full textRoberto Gerhard was a pioneer of electronic music in England creating a number of substantial concert, theatre and radio works from as early as 1954. Gerhard’s electronic music is one of the richest repositories for understanding the development of the composer’s late compositional technique. Apart from the Symphony no.3, ‘Collages’, none of Gerhard’s electronic music is published. This paper will discuss aspects of Gerhard’s electronic music, focusing on Audiomobiles (1958-59) and Sculptures (1963)
Replication data for: "Investigating the growth kinetics in sourdough microbial associations"
No full textThis dataset contains graphs obtained with three models based on Gompertz’s, Baranyi and Roberts ’, and Schiraldi’s functions using using experimental data from growth tests of microbial consortia consisting of Fructilactobacillus sanfranciscensis strains and Kazachstania humilis strains
Roberto Gerhard’s Sound Compositions: A Historical-Philological Perspective. Archive, Process, Intent and reenactment
No full textThis research advances the current state of knowledge in the field of early tape music both empirically and methodologically. The purpose of this study is to evaluate the impact that the electronic medium exerted in the musical thinking of Roberto Gerhard, one of the most outspoken, prolific and influential composers in the Spanish diaspora whose musical legacy, for the most part unknown, is a major landmark in the early history of electroacoustic music. Gerhard’s personal tape collection, one of the largest historical archives of its kind reported in the literature, is exceptional for both its antiquity (50+-year-old tapes) and its abundance of production materials. Through the digitisation and analysis of the composer’s tape collection this research argues that the empirical study of audio documents sets out a basis for a broader understanding of textual processes. More specifically, the research demonstrates that the reconstruction of works based on magnetic tape sketches is a powerful method to advance the understanding of early tape music. This research also examines Gerhard’s sound compositions in relation to the post-war context in which they were composed. Finally, this research presents performance documentation that proposes an approach to the electroacoustic music repertoire in which creativity is not at odds with rigor and critical discernment demonstrating that archival study can be closely aligned to the concept of re-enactment
Time scale of the growth progress in bacterial cultures: a self-consistent choice
No full textAn empirical model describes the behavior of an ideal microbial culture that mimics the real one. The predicted growth curve, log[N(t)], includes the onset tail of the observed sigmoid trend, while the latency phase that precedes the cell
duplication is a time gap, which does not coincide with the so-called lag phase of other models. Unsolved remains the issue of the time scale: does the origin of the time scale of the experimenter coincide with that of the microbial culture?
The correlation between duration of latency phase and maximum slope of the growth trend allows determination of a “true” starting point of the growth progress as the origin of the time scale of the microbial culture. Rigid shifts in the time
scale of the experimenter allow alignment of the growth trends of real microbial cultures (in excess substrate, in the same medium and at the same temperature), no matter the starting population density. The time scale of the bacterial culture
allows a consistent evaluation of the extent of the latency phase that can include a “negative” time span, which is supposed to deal with some basal cell metabolism not aimed at duplication. Some examples, dealing with real psychrotrophic bacterial cultures, support the model and perfect the prediction of the extent of the latency phase at various temperatures
Filologia editoriale, Roberto Calasso in dialogo con Paola Italia e Francisco Rico
No full textPaola Italia e Francisco Rico intervengono sul libro di Roberto Calasso, presidente e fondatore di Adelphi Edizioni, L'impronta dell'editore, e discutono di problemi di filologia delle forme editoriali, dal punto di vista dell'autore, del lettore e dell'editore.Paola Italia and Francisco Ricos interview Roberto Calasso, Publisher, Writer, and Founder of Adelphi Edizioni, about his book: L'impronta dell'editore, talking about philology, publishing and editing, from the author, the reader and the publisher's point of view
A phenomenological model to infer the microbial growth: a case study for psychrotrophic pathogenic bacteria
No full textAims The two-parameter (alpha and beta) Schiraldi's model reliably fits growth curves of psychrotrophic pathogens and suggests a different description of the latency phase. Methods and Results Data obtained at various temperatures and different starting cell densities for Aeromonas hydrophila, Listeria monocytogenes and Yersinia enterocolitica have been fitted with the Baranyi and Roberts' model and the new one. On average, the former showed higher standard error and R-2 values (0.140 and 0.991) than the Schiraldi's one (0.079 and 0.983). Around 15celcius, the increase of temperature showed a milder effect on the growth rate than that expected. Y. enterocolitica showed a practically null duration of the lag phase, no matter the value of the starting density, whereas A. hydrophila and L. monocytogenes revealed slower onset trends. Conclusions Parameter beta defines the number of cell duplications and appears independent on temperature, while (beta/alpha)(1/2) is proportional to the maximum specific growth rate. The alpha(-1/2) versus temperature trend directly reflects the corresponding behaviour of the growth rate and does not require the use of Arrhenius plots. Significance and Impact of the Study Values of the parameters alpha and beta, as well as the duration of the latency phase, allowed some considerations about the effect of storage temperature in terms of food safety, especially for psychrotrophic bacteria of concern
Roberto Tibau and the process of making architecture
No full textEste estudo documenta a vida e a obra de Roberto José Goulart Tibau (1924-2003), arquiteto brasileiro. O objetivo fundamental - e mais importante - é reunir informações sobre os projetos e obras mais significativos desenvolvidos durante sua atividade profissional, tornando-os acessíveis através dessa pesquisa. O trabalho baseou-se em pesquisa bibliográfica, levantamento e registro das obras e projetos realizados, currículo profissional, e depoimento de Tibau, concedido ao autor, em 1998. Em Roberto Tibau e o fazer arquitetura são descritos os caminhos percorridos pelo arquiteto; o contexto histórico de sua formação e atuação profissional; a relação de sua produção arquitetônica com outras obras da época; e eventuais referências projetuais utilizadas na criação dos seus projetos. Este trabalho vem preencher uma lacuna bibliográfica considerável, trazendo à luz, a obra deste significativo arquiteto, que dedicou sua vida ao trabalho na prancheta, na qual deixou sua marca de humanista.This study documents the life and work of Roberto José Goulart Tibau (1924-2003), a Brazilian architect. It aims to collect information about the most significant projects developed during the years of his professional career, which will become available through this research. The present study based on bibliographical research, examination and registration of the projects executed by the architect, his resumé, and his testimonial to the author of this research, in 1998. In Roberto Tibau and the process of making architecture there is a description of the ways in which his projects were conceived; the historical context through his professional activity since graduation, the relation between his own production and the production of other architects of the same period, and the projecting references used for his creations. This research is also an attempt to fill a signicant bibliographical gap of architecture history in Brazil by bringing to light the work of this relevant architect, who dedicated his life to working on his drawing table, leaving to us his humanistic style
Innovative Alcoholic Drinks Obtained by Co-Fermenting Grape Must and Fruit Juice
No full textIn this study, Cabernet Sauvignon and Chardonnay musts, and fruit juices from cherry, kiwi, peach, and strawberry were co-fermented with Saccharomyces cerevisiae EC1118 and Torulasporadelbrueckii UMY196 at two different proportions (80:20 (v/v) and 60:40 (v/v)). The most pleasant fruit-based drink was obtained with Cabernet Sauvignon must and kiwi juice in a proportion of 60:40 and fermented with T.delbrueckii. This beverage was produced in higher volume to simulate a scale-up, and the aromatic profile, sensory description, and consumer acceptability were determined. The most powerful odorants of the kiwi-based drink were ethyl octanoate, phenylethanal, ethyl hexanoate, vinyl-guaiacol, benzaldehyde, and nonanal, for which the odor activity values were 21.1, 3.3, 2.6, 2.2, 1.9, and 1.6, respectively. These findings were in accordance with the sensory analysis, since the emerged descriptors were fruity (ethyl octanoate), honey and floral (phenylethanal), apple and peach (ethyl hexanoate), and citrus (nonanal). The consumers judged the kiwi-based drink acceptable (67%) and 39% of them would buy it. The reliable fermentation of a grape must/fruit juice was demonstrated. The kiwi-based drink represents an innovative and pleasant beverage with a positive impact on sustainability as its production can limit the loss of fresh fruits, as well as contribute to the enological field
Microbiologia delle uova e degli ovoprodotti
No full textL’uovo costituisce uno degli alimenti di origine animale più completi dal punto di vista nutrizionale e più diffusi nelle diete di tutto il mondo, grazie alla sua versatilità d’impiego in diverse formulazioni e al suo basso costo. La valutazione della sicurezza e della qualità di questo prodotto è fondamentale a causa della sua intrinseca deperibilità e dell’elevata probabilità di contaminazione lungo la filiera produttiva e
distributiva. In questo capitolo vengono affrontati e approfonditi gli aspetti igienici relativi alla produzione e trasformazione dell’uovo e dei suoi derivati, nonché alcune informazioni relative alla normativa che ne regolamenta il settore
Roberto Bolaño, la memoria antiheroica del exilio chileno
No full textThis article discusses the personality and the work of the Chilean writer Roberto Bolaño in an attempt to expand on the relationship between the author and his homeland Chile. Even though Bolaño left Chile at an early age and lived in many countries throughout his life, he tried to regain his roots as reflected in the novels about the Chilean dictatorship, Estrella distante and Nocturno de Chile. The author also attempts to vindicate his own origin in his literary alterego Arturo Belano. Thus, this article will highlight and analyse the relation between Roberto Bolaño and Chile through the antiheroic vision given not only to the characters but also to the settings of the narratives.Este artículo se centra en la personalidad del escritor chileno Roberto Bolaño y su obra para profundizar en la relación existente entre el autor y Chile, su país de origen. Pese a haber abandonado el país siendo muy joven y a haber residido en otros países a lo largo de su vida, Bolaño nunca perdió el interés por recuperar sus raíces chilenas tanto como lo reflejan las novelas que dedica a la dictadura chilena, Estrella distante y Nocturno de Chile sobre todo, así como por reivindicar su propio origen a través de su álter ego literario Arturo Belano. En este artículo se señalarán y analizarán estas relaciones entre Roberto Bolaño y Chile a través de la visión antiheroica que el autor confiere tanto a los ambientes como a los personajes que articulan su narrativa
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