132,533 research outputs found
A phenomenological model for healing and hysteresis in rubber-like materials
No full textWe propose a predictive model for the dissipative behaviour of rubber-like materials. In the spirit of De Tommasi et al.
[D. De Tommasi, G. Puglisi, G. Saccomandi, A micromechanics based model for the Mullins effect, J. Rheol. 50 (2006) 495–
512], we assume that at the scale of the polymeric network the material is constituted by a distribution of links with variable
activation and fracture thresholds. By considering the recross-linking effect due to unloading we obtain a three-dimensional,
non-linear damage model that describes the rate-independent hysteretic behaviour observed in rubber-like solids. The feasibility
of the model in treating complex non-homogeneous deformation histories is shown through a numerical application
Notes on the bryophyte flora and vegetation of the central and south-western Balkans.
No full textPuglisi, M., Campisi, P., laku.i., D., surina, B., Di Pietro, R., Privitera, M. Notes on the bryophyte flora and vegetation of the central and south-western Balkans. Lazaroa 34: 107-116 (2013). A study on the bryophyte flora and vegetation was carried out in the mountains at the boundary between Albania, Macedonia and Montenegro. The study area included Maja and jezerces massif (Prokletije mts., sE Dinaric Alps) and Mt korab (Šar-Pindos Range) in Macedonia. several records for the bryological flora of Macedonia and Albania are reported. In particular Scapania cuspiduligera and Distichium inclinatum are new records for the Albanian flora. In addition some bryophytic and bryo-chormophytic associations belonging to the phytosociological classes Ctenidietea mollusci and Montio fontanae-Cardaminetea amarae are reported too. © 2013. Universidad Complutense de Madrid
Linear extension operators between spaces of Lipschitz maps and optimal transport
No full textMotivated by the notion ofK-gentle partition of unity introduced in [J. R. Lee and A. Naor, Extending Lipschitz functions via random metric partitions, Invent. Math. 160 (2005), no. 1, 59-95] and the notion of K-Lipschitz retract studied in [S. I. Ohta, Extending Lipschitz and Hölder maps between metric spaces, Positivity 13 (2009), no. 2, 407-425], we study a weaker notion related to the Kantorovich-Rubinstein transport distance that we call K-random projection. We show that K-random projections can still be used to provide linear extension operators for Lipschitz maps. We also prove that the existence of these random projections is necessary and sufficient for the existence of weak_continuous operators. Finally, we use this notion to characterize the metric spaces .X; d/such that the free space F .X/has the bounded approximation propriety
Ripartire da Salerno. Cittadella Giudiziaria - Architetti: David Chipperfield, London - Ferruccio Izzo, Napoli
No full textPresentazione del progetto della Cittadella Giudiziaria di Salerno, opera di David Chipperfield in associazione con Ferruccio Izzo, incarico ricevuto a seguito di concorso intenazionale di progettazione. Nell'ambito di una illustrazione dei più importanti progetti di trasformazione urbana in fase di realizzazione nella città di Salerno, vengono indicati i caratteri fondamentali e la strategia urbana che sottendono alla genesi del complesso della nuova Cittadella Giudiziaria. Immagini dei plastici del progetto e una planimetria generale dell'intervento corredano una nota critica di Alessandro Castagnaro e Luigi Prestinenza Puglisi
Ripartire da Salerno. Cittadella Giudiziaria - Architetti: David Chipperfield, London - Ferruccio Izzo, Napoli
No full textPresentazione del progetto della Cittadella Giudiziaria di Salerno, opera di David Chipperfield in associazione con Ferruccio Izzo, incarico ricevuto a seguito di concorso intenazionale di progettazione. Nell'ambito di una illustrazione dei più importanti progetti di trasformazione urbana in fase di realizzazione nella città di Salerno, vengono indicati i caratteri fondamentali e la strategia urbana che sottendono alla genesi del complesso della nuova Cittadella Giudiziaria. Immagini dei plastici del progetto e una planimetria generale dell'intervento corredano una nota critica di Alessandro Castagnaro e Luigi Prestinenza Puglisi
Diospyros multimaculata C. Puglisi 2022, sp. nov.
No full textDiospyros multimaculata C.Puglisi, sp. nov. Diospyros multimaculata is vegetatively most similar to Diospyros rostrata (Merr.) Bakh. and D. pulchra Bakh. It differs from the former in the fruit with a nearly smooth epicarp (markedly colliculate in Diospyros rostrata) and in lacking the pronounced apical projection, and from the latter in the trimerous calyx and the prolate to fusiform fruit (calyx tetramerous and fruit globose to oblate in D. pulchra). It also resembles D. janowskyi Bakh. in the overall habit and fruit shape but differs in the conspicuously glandular and subcordate base of mature leaves (leaf base inconspicuously to not glandular and obtuse in D. janowskyi). Diospyros multimaculata is characterised by the large, mature leaves with subcordate base and acuminate apex; numerous dark glands at the leaf base and alongside the midrib; the hairy leaves; and the prolate to fusiform fruit subtended by a small, trimerous calyx. – Type: Papua New Guinea, Sandaun (West Sepik) Province, Vanimo District, Ossima, 30 m a.s.l., 30 i 1969, Streimann & Kairo NGF 39283 (holotype K [K00618534]; isotypes E [E01014580], L [L.2667453]). Figure 1. Small tree 6–8 m tall; bark black, stems hairy. Leaves simple, alternate; petiole 6–8 mm long, hairy, terete; lamina dark green above, paler beneath, ovate, elliptic or slightly obovate, 11–20 × 3.5–8.5 cm, base subcordate (obtuse to rounded in younger leaves), apex acuminate; indumentum simple on both sides, adaxially denser (although brittle and caducous) and more abundant along the midrib, abaxially also including T-shaped hairs on the lamina, young leaves with ciliate margin; black (at least in herbarium specimens) pitted glands along the midrib throughout its length, densely clustered at the leaf base and peculiarly visible on the adaxial side; on the adaxial side midrib raised at the base and then becoming sulcate, secondary veins flat or slightly raised, tertiary veins almost inconspicuous, on the abaxial side midrib raised throughout, secondary veins raised and visibly anastomosing near the margin in loops, tertiary veins raised and scalariform. Male inflorescences and flowers not seen. Remnants of female inflorescences axillary, to 2.5 cm long, 4- to 10-flowered. Flowers not seen, reported as yellow for both sexes. Fruiting calyx very small, tube reduced, lobes 3, divided almost to base, broadly acute, 1–2 mm long, spreading or slightly reflexed, hairy outside, glabrous inside. Fruit fleshy, prolate to fusiform, light green when immature, orange to red when ripe, sparsely hairy to nearly glabrous, 3.5–5.6 × 2–2.5 cm, acute at the base and acute at the apex, epicarp smooth to slightly irregular. Seeds up to 6, usually 5 or 6, dark brown, smooth. Distribution. New Guinea (Figure 2). Habitat and ecology. Lowland swampy or seasonally inundated primary forest, on clay soil. Etymology. This species is named after the numerous glands at the leaf base and throughout the lamina alongside the midrib. Vernacular name. Usrapai (Kemtuik [Kamtuk] language). Other specimens examined. INDONESIA. Papua Province: Jayapura, Sekoli, South of Lake Sentani, 110 m a.s.l., 7 viii 1957, Kalkman BW 3767 (K, L). PAPUA NEW GUINEA. Sandaun (West Sepik) Province: Vanimo District, near Poar River, 30 m a.s.l., 22 vi 1975, Katik LAE 62262 (E, K, L); Madang Province: Wanang Village, 115 m a.s.l., 29 x 2008, Ctvrtecka 2971 (K); Josephstaal FMA area, 160 m a.s.l., 5 viii 1999, Takeuchi et al. 13764 (K, L).Published as part of Puglisi, C., Jimbo, T. & Hagwood, A., 2022, Two new species of Diospyros (Ebenaceae) from New Guine, pp. 1-10 in Edinburgh Journal of Botany 79 on pages 3-4, DOI: 10.24823/EJB.2022.1879, http://zenodo.org/record/737424
Le Arenarie di Yesomma in Somalia: un possibile equivalente meridionale delle piu` note "Nubian Sandstones".
No full textDiospyros tehno C. Puglisi, Jimbo & Hagwood. Both 2022, sp.nov.
No full textDiospyros tehno C.Puglisi, Jimbo & Hagwood, sp.nov. Diospyros tehno is similar to Diospyros fusicarpa Bakh. in the shape of the fruit, the cauliflory and the overall leaf texture. It differs in the leaf being hairy on both sides (vs glabrous above and hairy only along the midrib below in Diospyros fusicarpa), the pronounced midrib on the upper side (vs very slightly so or flat in D. fusicarpa), and the pigmentation which is light green (fresh) or mid-brown (dry) on the lower side (vs reddish when fresh and amaranth brown when dry in D. fusicarpa). – Type: Papua New Guinea, Sandaun (West Sepik) Province, Kwima – Wara John, 125 m a.s.l., 17 v 2018, Jimbo, Hagwood, Sule, Aika, Maharape, Cook LAE 91326 (holotype LAE, isotype K). Figures 3, 4. Small tree to 3 m high, bark black, younger stems densely tomentose; terminal bud c. 0.5 cm long, broadly conical. Leaves simple, alternate; petiole 7–10 mm long, 3–3.5 mm thick, densely tomentose, slightly flat above; lamina dark green above (silver brown when dry), light green beneath (mid-brown when dry), elliptic to obovate, 30–35 × 8–11.5 cm (only three mature leaves seen), base broadly acute, apex acuminate; indumentum simple on both sides, denser along the venation, and including small, widespread, superficial, pale glands which are more noticeable on the lower surface; black pitted glands absent; midrib raised on both sides, secondary veins weakly raised above, more pronounced beneath, visibly anastomosing through serial scalariform tertiary veins, these inconspicuous above and weakly raised beneath. Inflorescences and flowers not seen. Female trees cauliflorous, inflorescences probably multiflorous. Fruiting calyx tetramerous, tube c. 0.6 cm long, conical, lobes spreading, oblong-ovate, apex acute, rigid, c. 1 cm wide at base, at least 1.7 cm long (no entire calyx lobes seen); tube and basal part of the lobes hairy outside and inside, the distal portion glabrescent outside, sparsely hairy inside. Fruit fleshy, turbinate, red, pilose with a fine upright indumentum, c.10.7 × 3.8 cm, narrower at the base and acute at the apex, epicarp smooth, held upright from the trunk. Seeds 2, c. 6.5 cm long, turbinate, dark brown, surface minutely punctate. Distribution. New Guinea (see Figure 2). Etymology. The epithet is the local name of this tree in the Abau language. Other specimen examined. PAPUA NEW GUINEA. Sandaun (West Sepik) Province: Utai Station, Nuya Forest Area, 206 m a.s.l., 19 iii 2018, Jimbo & Magun LAE 91714 (LAE).Published as part of Puglisi, C., Jimbo, T. & Hagwood, A., 2022, Two new species of Diospyros (Ebenaceae) from New Guine, pp. 1-10 in Edinburgh Journal of Botany 79 on pages 6-9, DOI: 10.24823/EJB.2022.1879, http://zenodo.org/record/737424
Unconformity-bounded stratigraphic units approach to a siliciclastic turbidite basin: The eastern part of Miocene Gorgoglione Flysch (Southern Apennines, Italy)
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