123,499 research outputs found
Multianalytical approach to characterize composition and degradation processes of synthetic high-fashion textiles from the Nanni Strada Design Studio archives
No full textSynthetic textiles are constituents of heritage objects and garments often displayed in museum collections or preserved in archives, presenting unprecedented and specific conservation challenges. These issues need to be addressed assessing degradation processes, and developing targeted restoration and preventive conservation practices. The present work aims at characterizing the composition of high fashion garments and design textiles by Nanni Strada conserved in the archives of Nanni Strada Design Studio (Milan). To identify the chemical composition of the fibers used for the manufacturing, and to investigate the degradation processes affecting the objects, the materials were investigated by Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR), Evolved Gas Analysis coupled to Mass Spectrometry (EGA-MS), and multi-shot Pyrolysis coupled to Gas Chromatography and Mass Spectrometry (Py-GC/MS). The results will contribute to a better knowledge of the chemical properties of the textiles produced in the 1970s, and to plan conservation and exhibition strategies
THE MIDDLE TRIASSIC LAGERSTÄTTE OF MONTE SAN GIORGIO REVEALS THE OLDEST LACE BUGS (HEMIPTERA: TINGIDAE): <em>ARCHETINGIS LADINICA</em> GEN N. SP N.
No full textA new genus and species of fossil lace bugs (Hemiptera; Tingidae), Archetingis ladinica gen. n. et sp. n. is described from the lower Kalkschieferzone (Meride Limestone, Upper Ladinian) of the Swiss side of Monte San Giorgio. The new taxon clearly resembles modern Tingidae in its hemelytra and pronotum, with two rows of areole, in the presence of bucculae closed at the anterior end, not extending beyond the apex of the head, and in the presence of a labial groove on the meso-/metathoracic sternum. Distinctive features are the thick femurs of the first and second pair of legs, the exceptional size (total length of ~12 mm) if compared with both fossil and extant species. Archetingis ladinica gen. n. et sp. n. represents by far the oldest known species of this family and brings back the origin of Tingidae of approximately 140 My, well into the Middle Triassic. The discovery of A. ladinica, beside its evolutionary consequences on the origin of extant Tingidae, provides evidences for the presence of terrestrial ecosystems nearby to the depositional environment. According to the living and trophic behavior of extant Tingidae, those emerged lands had to be covered by vegetation
A NEW GENUS AND SPECIES OF THE FAMILY TRACHYPACHIDAE (COLEOPTERAN, ADEPHAGA) FROM THE UPPER LADINIAN (MIDDLE TRIASSIC) OF MONTE SAN GIORGIO
No full textA new genus and species of fossil Trachypachidae Praedodromeus sangiorgiensis gen. n sp. n. (Coleoptera, Trachypachidae, Eodromeinae), with well developed asymmetrical mandibles, shorter than the head, subrectangular pronotum and slender tibiae, longer than femora, is described from the Kalkschieferzone (uppermost member of the Meride Limestone) of the Swiss side of Monte San Giorgio. Trachypachidae are terrestrial Coleoptera well represented in the Mesozoic fossil record by the extinct family Eodromeinae. Up to now, more than 33 fossil species belonging to 13 genera of Eodromeinae have been described. The new species is part of a collection of fossil insects that includes members of at least six different orders. Based on the ecology of corresponding extant taxa, this insect assemblage provides new insights on the paleoenvironment of Monte San Giorgio area during the Late Ladinian. The assemblage includes terrestrial taxa that support the presence of emerged land and taxa with long-lasting aquatic larval stage (as Plecoptera and Ephemeroptera) that confirm the presence of stable fresh water basins
Regolamento di S.M. per le materie civili e criminali nel Ducato di Genova
No full textGenova : dalla Stamperia ducale, strada Giulia n. 522
Data di emenazione: 13 maggio 1815
Segn.: [pigreco]/4 1-21/4 22/6 a-n4 o6(-o6)
https://galileodiscovery.unipd.it/discovery/fulldisplay?context=L&vid=39UPD_INST:VU1&search_scope=MyInst_and_CI&tab=Everything&docid=alma99002511431020604
''On the use of reachability gramians for the stabilization of linear periodic systems''
No full textThis paper deals with the development of explicit formulas, based on reachability Gramians, for the stabiliza- tion of linear periodic systems. In contrast with the ‘pointwise’ strategy already known in the literature, a different ‘intervalwise’ scheme is proposed, involving reduced computational effort. Stability results are provided in both continuous and discrete time under the sole controllability assumption without requiring system reversibility
L'insegnamento della letteratura italiana nel Novecento (e oltre?)
No full textDir. da E. Cecchi N. Sapegno.
Direz. e coordinam. N. Borsellino e L. Felici
Articolo a due mani, di Pietro Gibellini le pp. 847-863 e 872-7
''Kalman filtering with mixed discrete-continuous observations''
No full textThe optimal filtering problem for systems subject to both the discrete and continuous measurements is studied. The observability and detectability properties of such systems are investigated pointing out their connections with the existence of stable discrete-continuous observers. The optimal filter is based on the solution of a suitable matrix differential Riccati equation with jumps. Sufficient and necessary conditions for the existence of periodic stabilizing solutions to such an equation are worked out. The main result states that both detectability and stabilizability are necessary and sufficient for the existence of a unique periodic solution which is also stabilizing. Stabilizability and detectability also guarantee asymptotic convergence of the Kalman filter to the steady-state periodic filter irrespective of the initial state covariance. The results are illustrated by means of a numerical example
De vitis imperatorum et Caesarum Romanorum, tam occidentalium quam orientalium, nec non uxorum et liberorum eorum, item tyrannorum omnium ... inde a C. Julio Caesare ... ad Caesarem Matthiam, unà cum eorum effigiebus et symbolis ... ex antiquissimis numismatibus ... expressis
No full textOctavii de Strada a Rosberg[Durchgeschlossen, mit Bemerkungen von Rem. Fäsch.] Exemplar ZB Zürich; S 116Aus dem Vorbesitz des Klosters Rheinau, mit Verbalexlibris: "M[o]n[aster]ij Rhenoviensis ... Eberhardo ab ipso ... 1616.
''On the stability of receding-horizon LQ control with zero-state terminal constraint''
No full textReceding-horizon control with zero-state terminal constraint for linear time-varying discrete systems is considered. It is shown that uniform controllability suffices to ensure closed-loop exponential stability thus relaxing the reversibility and/or detectability requirements made in the existing literature. The result has interesting implications in the design of predictive controllers with guaranteed closed-loop stability
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