3,731 research outputs found
Drum centrifuge model tests of surface and buried circular footings on silica sand under general planar loading.
No full textThe report presents the results of a series of combined loading tests to assess the behaviour of surface and buried footings on medium dense silica sand. All the tests were performed in the drum UWA centrifuge at an acceleration equivalent to 100 that of the earth's gravity. For one sample 19 individual sites have been tested and 3 different degrees of embedment of circular flat footing models have been examined (d/D ~ 0, 0.5, 1).
By means of two different loading arms, two different moment to horizontal load ratios have been investigated.
The data presented in this report extend the findings of a testing programme on circular footing on sand (Govoni et al. 2005). All the tests were designed and conducted in order to be analyzed in a work hardening plasticity framework
Corrado Govoni crepuscolare futurista
No full textAttraverso l'analisi linguistica e stilistica di alcuni aspetti della lingua poetica e della retorica delle prime raccolte di Corrado Govoni, vengono proposte alcune delimitazioni circa la sua appartenenza da una parte al crepuscolarismo, dall'altra al primo futurismo italiano
Le kleksografie poetiche di Corrado Govoni
No full textL’articolo si occupa di un gruppo di poesie che Corrado Govoni pubblicò tra il 1914 e il 1915 su varie riviste (tra cui «La Riviera Ligure», «La Voce», «Lacerba»), presentandole sotto la titolazione collettiva di "Kleksografie", poi non conservata quando parte di queste poesie confluì nella raccolta poetica "L’inaugurazione della primavera" (1915). La lettura proposta, partendo da una contestualizzazione cronologica e culturale di queste poesie, cerca di ricostruire le ragioni espressive dell’analogia istituita da Govoni tra scrittura poetica e disegno kleksografico, curioso esempio di dialogo tra forme letterarie e categorie della rappresentazione visiva, del quale si trova traccia anche in altri testi della produzione coeva del poeta ferrarese.The article deals with a group of poems that Corrado Govoni published on various literary magazines («La Riviera Ligure», «La Voce», «Lacerba», «Myricae») between 1914 and 1915, under the collective title of Kleksografie; the poems were then included in the book L’inaugurazione della primavera (1915), where the title Kleksografie doesn’t appear. The essay tries to determine the meaning of the analogy drawn by the author between poetic writing and klecksography (the art of making images from inkblots, that has also been used by psychiatrists and psychoanalysts like Hermann Rorschach as a tool to study the subconscious); it also illustrates the connections between these poems and Govoni’s contemporary production, influenced both by Futurism and Crepuscularism
Historians of science and the “Sobel Effect”
No full textIn 1995, journalist Dava Sobel’s Longitude caused an earthquake in the history of science community. The present article analyses how only recently historians of science have fully realized the novelty the book represented. In the meantime, the international success of popular books by journalists on the history of science has become a well-known phenomenon. The author suggests that the huge publishing success of Sobel’s book – the “Sobel Effect” – has provoked three main kinds of reaction among historians: rejection, detachment, and imitation. Which of the three strategies is the best, for both public and authors
A centrifuge study on the effect of embedment on the drained response of shallow foundations under combined loading
No full textDrum centrifuge tests with surface and buried circular footings on medium dense silica sand subjected to planar combined loading are reported. The experimental work specifically addresses the effect of the footing embedment within a work-hardening plasticity approach, which to date has been used predominantly for interpretation of the behaviour of small-scale models of surface foundations. Vertical loading and swipe tests were carried out, and results are compared with existing data from similar studies on small-scale 1g foundation models. The overall trend of the centrifuge results confirms the general framework, suggesting that a work-hardening plasticity approach in terms of force-resultant modelling for the soil-footing system (the so-called 'macro-element') applies under properly scaled stress conditions. The data also indicate that the traditional assumption of a yield surface, isotropically expanding with increasing vertical penetration is not suitable for an embedded foundation. An enhancement of the existing yield surface formulation enables generalisation of the existing work-hardening models from surface to embedded footings.</p
Leganti recettoriali dei canali del calcio nel SNC: attivita' farmacologica e potenziale uso terapeutico
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