Search results for "desert"

The transformation of agricultural systems into agro-forestry systems as a mechanism of adaptation to climate and economic changes: some Sicilian cas…

2021

Many traditional agricultural systems show different limits both in ecological and economic terms. These limits are exacerbated by the increasingly extreme climatic conditions which in the southern regions are manifested essentially in a concentration of rainfall and in increasingly intense dry periods. As part of the LIFE (Desert Adapt) project, some companies involved in the project are modifying their cultivation systems without changing the land use destination. This appears possible by introducing elements of diversification which make the system more resilient as a whole but which guarantees safer economic resources. In particular, in the case of a "classic" agricultural company Calta…

Caractèrisation des processus de seècheresse et de désertification à l'échelle régionale

2009

Suolo, Risorsa di Paesaggio

2012

Prosperare al di là del merito: il senso della nemesis in Aristotele tra giustizia distributiva e giustizia correttiva

2017

L’articolo prende in esame quella particolare forma di indignazione che Aristotele indica, nel secondo libro della Retorica, con l’infinito sostantivato to nemesan, derivato dal termine nemesis. Si tratta della reazione che si genera in un animo nobile contro chi prospera al di là del merito. Il sostantivo e i suoi derivati risultano poco usati in età classica e ricorre più frequentemente nell’epica omerica e in Esiodo. Aristotele sembra recuperarlo proprio dalla tradizione poetica arcaica, assegnandogli un ruolo nella sua riflessione sulla giustizia e in particolare nella differenza tra la forma distributiva e quella correttiva. Egli individua così in questa forma di indignazione, un’emozi…

I fiori del deserto: Sbarbaro e i licheni

2006

Il deserto rappresenta per Sbarbaro una delle metafore poetiche predilette e lo specchio della condizione esistenziale del poeta. Se l’impossibilità di una corrispondenza tra sé e il mondo, la consapevolezza di una condizione di solitudine e aridità si oggettiva nell’immagine del deserto, il disperato attaccamento alla vita detta all’autore l’identificazione con la tenace resistenza dell’elemento naturale, dal pino abbrancato al tufo al fico che cresce storto e nano e soprattutto al lichene, al centro di un interesse estetico-scientifico qui indagato anche in relazione agli studi botanici del poeta.

Oasi nel deserto. La poetica dello spazio negli scritti sbarbariani dal fronte

2012

Nelle lunghe pause della guerra di trincea – definita un «Sahara di automatismo e di imbecillità» - Sbarbaro è tenacemente volto a ritagliarsi «oasi» di silenzio per leggere, comporre, e persino raccogliere le sue amate piante. Lungi dalla ricerca di un’alternativa alla barbarie in senso misticheggiante, il poeta ligure rimane ancorato alla contingenza empirica; quest’ultima emblematizzata appunto dall’oasi, linea divisoria, seppur labile e precaria, fra ordine e disordine, cosmos e caos.

Alcune figure della diserzione nell'opera di Pavese

2022

Deserting Characters in Pavese’s Work ∙ Pavese’s experience of World War ii has been widely controversial. Anti-fascist without joining the Italian Resistance, Pavese reimagines his nonparticipation to the confict across several of his post-1945 works. The essay ofers a thematic reading on deserting fgures in some poems from La terra e la morte, in I due (included in Dialogues with Leucò), in the novel The House on the Hill. The reading brings out the torn and evolving development of the issue of deserting in Pavese’s oeuvre.

Redescription of the rare European harvestman Dicranopalpus brevipes Marcellino, 1970, based on first records from Sardinia (Arachnida: Opiliones)

2020

New records of the small, enigmatic harvestman Dicranopalpus brevipes are presented, the male is redescribed and the female is described for the first time. The species originates from Sicily, while the novel findings are from Sardinia, where it may have been introduced by man. Paedomorphic modifications such as reduced sexual dimorphism in colouration and pedipalpal morphology, regression of genital structures and shortening of the legs, appear to result from its ground-dwelling habits induced by xeric climatic conditions. Avoiding the dry and hot season, D. brevipes matures in autumn and winter and has completed its lifecycle in April. Additional information on phenology, ecology, distrib…

Monitoring desertification and land degradation over sub-Saharan Africa

2004

A desertification monitoring system is developed that uses four indicators derived using continental-scale remotely sensed data: vegetation cover, rain use efficiency (RUE), surface run-off and soil erosion. These indicators were calculated on a dekadal time step for 1996. Vegetation cover was estimated using the Normalized Difference Vegetation Index (NDVI). The estimation of RUE also employed NDVI and, in addition, rainfall derived from Meteosat cold cloud duration data. Surface run-off was modelled using the Soil Conservation Service (SCS) model parametrized using the rainfall estimates, vegetation cover, land cover, and digital soil maps. Soil erosion, one of the most indicative paramet…

Influence of substrate and temperature on the biodegradation of polyester-based materials: Polylactide and poly(3-hydroxybutyrate-co-3-hydroxyhexanoa…

2020

[EN] The extended use of polymers from renewable resources such as aliphatic polyesters or polyhydroxyalkanoates boosted the necessity to understand their behaviour in an end-of-life scenario. Although they can be degraded in reasonable shorter times than traditional polymers, understanding the degradation mechanisms under dissimilar conditions will contribute to further developments in this field. This work aimed to study the effect of temperature and substrate in the degradation of polylactide (PLA) and poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH) in a simulated laboratory scale to ascertain their contribution, separately or in combination. For this purpose, nine parallel degradat…