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Concrete construction harms our environment, making it urgent to develop new methods for building with less materials. Structurally efficient shapes are, however, often expensive to produce, because they require non-standard formworks, thus, standard structures, which use more material than is often needed, remain cheaper. Digital fabrication has the potential to change this paradigm. One method is Digital Casting Systems (DCS), where the hydration of self-compacting concrete is controlled on the fly during production, shortening the required setting time and reducing hydrostatic pressure on the formwork to a minimum. This enables a productivity increase for standard concrete production. More importantly, though, it enables a rethinking of formworks, as the process requires only cheap thin formworks, thus, unlocking the possibility to produce optimised structural members with less bulk material and lower environmental cost. While DCS has already proven effective in building structural members, this process faces the challenge of moving into industry. This paper covers the next steps in doing so. First, we present the benchmark and expectations set by the industry. Second, we consider how we comply with these requirements and convert our fast-setting self-compacting mortar mix into a coarser one. Third, we present the next generation of our digital processing system, which moves closer to the industrial requirements in terms of size and the control system. Finally, two prototypes demonstrate how DSC: (a) increases standard bulk production by 50% and (b) can be cast into ultra-thin formworks. We discuss the results and the short-term industrial concerns for efficiency and robustness, which must be addressed for such a system to be fully implemented in industry.

Lateral periodontal cyst (LPC) and odontogenic keratocystic (OK) are two osteolytic lesions of the jaw with different local invasiveness and percentage of recurrence. The aim of this study was to highlight the attention on the differential diagnosis of these lesions that sometimes can have unexpected location and can lead doubts on diagnosis, therapy, and follow-up. A 34-year-old man presented to our department with a complaint of soft pain in the vestibular aspect of left mandibular second premolar and left mandibular first molar. Vital teeth in the left mandible, no mucosal swelling, and no drainage were observed. The CBCT showed a well circumscribed hypodensity area, extending between 3.5 and the apex of mesial root of 3.6. No displacement and no resorption of the roots were notified. Upon clinical and radiographical examination, a provisional diagnosis of LPC was made and enucleation of the lesion and histological examination were planned. Histologically, a cystic wall partially lined by a keratinizing squamous epithelium was observed. Surrounding and within the lesion, there was a chronic inflammatory infiltrate also of granulomatous type and with cholesterol clefts. Based on these findings, the diagnosis of odontogenic keratocystic was done. Radiolucent lesions in the premolar and canine region are frequently clinically and radiographically misdiagnosed. The identification of keratocyst in a location preoperatively favoring a lateral periodontal cyst should be suspected and biopsy must be considered in all cases to establish the nature of the lesion, the best surgical treatment, and the follow-up appointments.

This article is a corrected and revised version of a paper presented at the symposium “Traduire la poesie: les significations et le sens”, organised by Yves Bonnefoy and Carlo Ossola (Fondation Hugot du College de France, Paris, 5-6 November 2015), the proceedings of which were never published. It proposes to investigate, in the introduction and in the historical-theoretical survey, the lines of development of a school of thought in translation which has always championed meaning, in our own times overcoming defining dualities and “prejudicial objection” in favour of rhythm and form as active features of poetic subjectivity. In the third section, the analysis and comparison between three versions of Leopardi’s L’infinito allows us to draw attention in Jaccottet and Orcel to a tendency towards the imitative tracing of these features, which in the latter’s translation also tend towards the archaic, whilst in Bonnefoy the move away from these formal similarities corresponds to the translator’s poetic imperative, relating to his notion of “traduction au sens large”, and extending also to the poet-translator’s own creative work.

When lower third molar inclusion is associated with neurosensorial complications, the treatment of choice is its surgical avulsion. One of these complications, that may be the most alarming during a first medical examination, is hemi-lip paraesthesia, that can appear in the presence of several mandibular lesions. This is a report of a rare clinical case in which paraesthesia was linked to the closeness between the root block of the dental element and the mandibular canal, which houses the neurovascular trunk of the lower mandibular nerve. A 64 year-old male Caucasian patient, presented with the chief complaint of past periodic inflammatory events in the retromolar region of the oral cavity and hemi-lip paraesthesia. Upon local clinical and radiological examination, a lower left third molar with class 3 position C inclusion was incriminated. The medical history of the patient revealed well compensated diabetes mellitus type II, and pharmacologically controlled hypertension. The tooth was surgically removed using piezoelectric instruments. Before and after surgery, three types of tests (tactile, pain and thermal sensitivity) were carried out to delimit the area affected by paraesthesia. At 7 days, the area of hypoesthesia of the hemi-lip was significantly reduced. Further improvement in tactile and thermal sensitivity occurred in subsequent follow-up, at 1 and 3 months, postoperatively. This clinical case demonstrates that the surgical intervention performed with piezoelectric instruments prevented the damage of an important structure such as the lower mandibular nerve, and promoted regression of a contingent paraesthesia.

Gia autore di studi su Valery e il disegno e membro dell’equipe che ha curato l’edizione integrale dei Cahiers 1894-1914, Paul Ryan ci offre in quest’ampia e documentata monografia uno studio circostanziato sul rapporto fondamentale che il poeta di Sete ha intrattenuto con l’arte, dalle sue prime prove di pittore, fatte per lo piu di ritratti e marine, alle riflessioni sulla pittura, i musei, l’architettura, l’edizione d’arte, la mondanita e la politica artistica, che ne caratterizzarono anch...

Si deve a Madeleine Bertaud, professore emerito dell’Universite de Lorraine, questa raffinata edizione commentata di una raccolta risalente alla fine degli anni Cinquanta e apparsa da Gallimard nel 2018 del noto artista e scrittore cinese accademico di Francia. Dopo una premessa bio-bibliografica, nell’«Introduction» (pp. 27-62) la curatrice sottolinea la specificita, nella storia della poesia cinese, della forma ideogrammatica, dal monosillabismo alla ricorrenza in essa dell’ellissi e della ...

Si deve a Franca Bruera, docente all’Universita degli Studi di Torino e riconosciuta specialista dell’opera di Apollinaire, questa recente edizione dell’intera sua opera teatrale, la quale va a colmare un vuoto nel panorama editoriale italiano, in cui, fino ad oggi, e prevalsa la traduzione della sua opera in versi e piu parziale e occasionale appare quella delle sue prose e delle sue opere drammaturgiche. Nella sua introduzione dal titolo «“E giunta l’ora di riaccendere le stelle”: il teatro...

Questo volume miscellaneo, che raccoglie gli Atti di un Colloque de Cerisy (11-18 agosto 2017), ha inteso mettere in luce, nel quarantennale della morte del poeta, la valenza «subversive» della sua opera, popolare, letta, ma in fondo ancora poco criticamente conosciuta e sondata. Nel testo liminare, dal titolo Jacques Prevert, «comme une grenade dans le reel» (pp. 11-30), i Curatori tratteggiano la varieta e la ricchezza del percorso artistico del poeta, cosi come le amicizie che lo hanno acc...

Ce recueil – un poeme, a y bien regarder, par son ton et sa structure –, sort pour sa premiere edition en Italie, dans une edition bilingue qui nous donne l’occasion d’approfondir la connaissance d’un auteur reconnu aujourd’hui par beaucoup comme l’un des plus importants de la litterature maghrebine d’expression francaise, et pas tout a fait inconnu du public italien, grâce a quelques anthologies deja parues dans mon pays. Je dis poeme, dans la mesure ou la matrice hypotextuelle avouee de ces...

vConcrete is a material favored by architects and builders alike due to its high structural strength and its ability to take almost any form. However, to shape concrete structures, heavy-duty formwork is usually necessary to support the fresh concrete while curing. To expand geometrical freedom, three-dimensional (3D) printed concrete formwork has emerged as a field of research. This article presents one possible application, a novel fabrication process that combines large-scale robotic fused deposition modeling 3D printing with simultaneous casting of a fast-hardening, set-on-demand concrete. This fabrication process, known as ‘‘Eggshell,’’ enables the production of nonstandard concrete structures in a material-efficient process. By casting a fast-hardening concrete in a continuous process, lateral pressure exerted by the fresh concrete is kept to a minimum. In this way, a 1.5-mm-thin thermoplastic shell can be used as a formwork, without any additional support. Geometries of different scales are tested in this article to evaluate the feasibility of the Eggshell fabrication process in an architectural context. An array of printing materials are also tested, and several different reinforcement concepts are analyzed. The findings are used to produce a full-scale architectural demonstrator project. This article shows that a wide range of concrete geometries can be produced in a material-efficient fabrication process, paving the way toward mass customization and structural optimization within concrete architecture., 3D Printing and Additive Manufacturing, 7 (2), ISSN:2329-7662, ISSN:2329-7670

This paper describes the design and fabrication process of a concrete column cast in ultra-thin, 3D printed formwork, using a process known as Eggshell. The column was prefabricated as part of a real-world construction project, serving as the main load-bearing element for a reciprocal timber frame structure. The fabrication of the column required upscaling of the Eggshell process, to allow for the fabrication of elements of an architectural scale. Furthermore, several challenges had to be addressed such as: integration of reinforcement, establishing the formwork design space, and scaling up the 3D printing process. For the production of the final column a 1.5 mm thin formwork was 3D printed, after which it was combined with a prefabricated reinforcement cage and filled with concrete in a set-on-demand casting process. The successful realization of the project provides a first example of a full-scale building element produced with the Eggshell fabrication process. By 3D printing the formwork, geometrical freedom in concrete construction is greatly expanded, as well as formwork waste reduced., RILEM Bookseries, 28, ISSN:2211-0844, Second RILEM International Conference on Concrete and Digital Fabrication, ISBN:978-3-030-49915-0, ISBN:978-3-030-49916-7

Si deve ad Anne Kimball la cura di questo interessante e ricco volume che unisce un epistolario a inediti del noto poeta e artista d’origine brettone Max Jacob (1976-1944), morto in un campo di concentramento tedesco. L’interlocutore privilegiato di questa corrispondenza e un giovane di Nantes, Julien Lanoe (1904-1983), appassionato di letteratura e figlio di una famiglia di agiati borghesi proprietari di un’azienda di commercio di metalli, della quale, alla morte dei genitori, diviene il pro...

Una nuova casa editrice italiana dedicata alla letteratura francese contemporanea propone questo romanzo di Alexandre Vialatte (1901-1971), eclettico autore e traduttore dal tedesco (tra l’altro di Kafka, Nietzsche, Goethe, von Hoffmannsthal, Mann, Brecht), nella gradevole traduzione di Rene Corona, che anche firma una «Nota saugrenue del traduttore» (pp. 217-221), in cui da conto, in modo confidenziale, delle opzioni traduttive adottate, oltre che delle affinita con l’autore tradotto. Pierre...

Fin dall’«Introduction» (pp. 15-22), l’A. rivela la ragione e lo scopo di questa sua ricerca su una delle figure piu singolari della letteratura francese del Secondo Novecento, creatore, come afferma, di un’«œuvre econome et ramassee» che pur attiro l’attenzione dei maggiori del suo tempo, da Bataille a Sartre, da Quignard a Bonnefoy e a Blanchot, che nella sua Postfazione al romanzo Le bavard (1963) parlo di un «nihilisme presque infini […] nihilisme de la fiction reduite a son essence, main...

L’Autore, professore di francese all’Universite St. Francis Xavier in Canada, raccoglie in questo volume una serie di studi volti a mostrare una filiazione schopenhaueriana del pensiero di Paul Valery. Nell’«Introduction» (pp. 9-20), Kokay rileva come nel dibattito critico tale argomentazione, pur se non del tutto elusa, non sia stata mai davvero approfonditamente considerata, avendo per lo piu i critici ritenuto la frequentazione dei testi di Schopenhauer ad opera di Valery un esercizio giov...

Digital fabrication with concrete introduces new challenges in terms of continuous processing of concrete. To enable increased vertical building rates, accelerators are dosed at a nozzle reactor unit directly before placement in many of these processes. The details of this mixing process have large implications for the behavior of the system and the success of the process. The measurement of residence time distribution (RTD) is a potentially useful tool in understanding these processes and diagnosing pathological behavior of reactors. In this study, the RTD of the Smart Dynamic Casting (SDC) reactor is measured, and implications for this process and other digital fabrication processes are considered.