178,882 research outputs found
Software per acquisizione, visualizzazione e analisi di dati impact-echo
No full textUn software per l'acquisizione, visualizzazione e analisi di dati impact-echo e' stato sviluppato all'interno del progetto di ricerca "Diagnostica strutturale dei beni architettonici tramite impact-echo e tomografia sonica" (responsabile Camilla Colla), progetto che intende sperimentare metodologie innovative per la diagnostica strutturale dei beni architettonici. In impact-echo – un metodo precipuamente per riflessione multipla del segnle sonico e ultrasonico - l’analisi dei dati avviene nel dominio frequenza consentendo una interpretazione piu’ raffinata ed elaborata che non metodi per trasmissione o per semplice riflessione del segnale. Il software consente di visualizzare in tempo reale i dati impact-echo acquisiti in maniera mono-, bi- e tri-dimensionale e di procedere a una interpretazione dei valori registrati
La storia del Gruppo Origine: Ballocco, Burri, Capogrossi, Colla 1950-1951 / The History of the Origin Group: Ballocco, Burri, Capogrossi, Colla 1950-1951
No full textIn occasione di una mostra tenutasi al Museo della Permanente di Milano nel 2012-2013, il saggio, incluso nel relativo catalogo, ricostruisce l'intricata vicenda della costituzione e della breve attività del Gruppo Origine (composto da Mario Ballocco, Alberto Burri, Giuseppe Capogrossi ed Ettore Colla), rettificando numerosi errori e inesattezze accumulate dalla storiografia, e sciogliendo nodi controversi rispetto alla sua nascita e al suo scioglimento
Della Elmintiasi nelle sue Relazioni colla Oculistica
No full textDELLA ELMINTIASI NELLE SUE RELAZIONI COLLA OCULISTICA
Franciscus Cornelius Donders Library (-)
Della Elmintiasi nelle sue Relazioni colla Oculistica (-
Hyalella misionensis Colla & Cesar 2015
No full textHyalella misionensis Colla & César, 2015 Type locality. Argentina, Misiones Province, Yabotí Biosphere Reserve, San Pedro and Guaraní Departments, Salto Isipós, near Paraíso stream (27°13.19'S- 54°02.73'W). Holotype. ♂, MLP-Cr 26978, 2011-10-19. Collectors: César, I and Martin, S.M. Paratypes. 15 ♂, 15 ♀, 7 ovigerous ♀, and 70 juveniles, MLP-Cr 26979, same locality, date and collectors as type. Current status. Valid species. Reference. Colla César (2015).Published as part of Diaz, Analía R., Álvarez, Victor Hugo Merlo & Damborenea, Cristina, 2017, Type material housed in the Carcinological Collection of the Museo de La Plata, Argentina, pp. 88-102 in Zootaxa 4303 (1) on page 98, DOI: 10.11646/zootaxa.4303.1.5, http://zenodo.org/record/99786
Assessment of critical hydrogen concentration in as cast and hot rolled billets in medium carbon steels
No full textThe presence of hydrogen severely affects the mechanical properties of semi‐manufactured and final steel products. Such presence is affected by different factors which show up throughout the whole manufacturing process and varies during the different stages according to both product features and various process parameters. This article presents an experimental methodology to assess the critical hydrogen concentration in as‐cast and hot‐rolled billets in medium carbon steels, which allows highlighting their robustness to hydrogen embrittlement. Such approach is based on a combination of hydrogen‐induced cracking and slow strain rate tensile tests, which are conducted on both as‐cast and hot‐rolled billets samples. The experiments highlight that the hydrogen presence is more critical on the as‐cast semi‐products than on the hot‐rolled billets, which show a higher robustness, as they can tolerate higher values of hydrogen content
Inspection & NDT to verify structural realiability of historic wooden roofs in the ex-Meroni spinning-mill
No full textThe Meroni spinning-mill, an industrial archaeological complex of historic and cultural importance, is the only surviving testimonial - integral, although in decay - of former economic activity in the province. In view of its preservation, inspections and NDT have been carried out on the wooden roof structures to verify and quantify the material consistency, to determine the degree of decay and risk of collapse. The inspection phases involved: identification of wood species; determination of natural durability and class of biological risk; location and evaluation of defects, alterations, critical zones; pathologies; environmental and wood moisture condition; evaluation of residual bearing resistance, photographic survey. The data plotting and reporting has been organized in thematic maps, catalogue of all structural elements, considerations of reliability, assessment of residual resistant sections and initial intervention indications. Local decay has been identified and explained in terms of a prolonged lack of maintenance, responsible for partial loss of material
Torre Ghirlandina: caratterizzazione delle murature, indagini statiche e dinamiche
No full textL’analisi del comportamento statico della torre ha valutato l’omogeneità delle sue murature (laterizio e paramento lapideo esterno) e stimato la resistenza dei materiali attraverso indagini non distruttive e micro-distruttive in sito e prove meccaniche su campion
Innovative non-destructive investigation of problematics in historical ceramic tilings via acoustic and electromagnetic techniques
No full textAppropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
High-strength steels for the automotive sector: A simple austenite transformation model for continuous annealing and galvanizing lines
No full textIn continuous annealing and hot-dip galvanizing processes, the final steel structures heavily depend on the process parameters (e.g. times and temperatures), which, thus, must be accurately tuned. In particular, the short-term permanence in a two-phase ferrite + austenite field and the following cooling process have a strong impact and can be very articulated, according to the plant type. Therefore, it is extremely useful to have practical and simple models estimating the austenite transformation based on the undergone thermal cycle. Actually, the process speed, especially for the cooling stage, implies that standard CCT curves are not applicable for determining the final structure. This work presents a solution exploiting a simple metallurgical-mathematical model. Such model, on the basis of experimental tests and starting from the chemical composition and the thermal cycle, estimates both the final structure and the mechanical properties of Advanced High Strength Steels, which are of utmost interest in the automotive sector
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