511 research outputs found
Unlawfull Concomitants of Stage-playes. Le broadside ballads e la polemica antiteatrale nell’Inghilterra della prima età moderna
No full textThis article deals with the English broadside ballads in the period between the Reformation and the end of the eighteenth century. The composition, performance, and selling of the broadside ballads have been considered in the light of the simultaneous explosion of the Puritan anti-theatrical prejudice, and of the contemporary legislation against street-theater and unauthorized cheap print
Sviluppo territoriale, agenzie e pubblica amministrazione. Interpretazioni e pratiche innovative
No full textModelling the mutual interactions between hydrology, society and water supply systems
No full textWe developed a simple conceptual socio-hydrological model to explore the mutual interactions between water management systems and society. We examined the feedback among climate, population, wealth and water availability and capital investment. Given the focus on the interplay among these multiple variables, some simple schemes were designated in order to simulate rainfall inputs, surface and aquifer hydrology and to mimic economic and social mechanisms. The proposed model is applied to synthetic cases in order to explore the dynamics of the water demand, water availability and water deficit that in turn influence the capital invested in water infrastructures. The results show how societal wealth, the number of people living in a given area and the local climate can determine societal efforts in exploiting water resources, the frequency of water deficits and the amount of money invested overall in infrastructures
Integrazione di metodi tomografici elettrici e sismici nello studio di un versante in frana
No full text
Spatial and compositional effects of intersection zones in the five-element (Ni-Co-As-Bi-Ag) vein system of the Southern Arburèse district (SW Sardinia)
No full textThe Arburèse district (SW Sardinia) is regarded as potential source of critical raw materials related to the large Montevecchio vein system, mined in the past for Pb and Zn ores. In the > 5 km-long, poorly exploited Southern branch of the system, the ores have been defined as five-element (Ni-Co-As-Bi-Ag) polymetallic veins (Moroni et al., 2019). They are hosted in late-Ordovician metasandstones and Silurian carbonaceous shales between two granitoid intrusions: the Arbus (304 Ma) and Mt. Linas (289 Ma) plutons. Investigations in the Perda S’Oliu, Sa Menga, Acqua Is Prunas and Pira Inferida old mines highlighted a pinch-and-swell attitude, with alternating ore shoots and low-mineralized zones. Prevalence of breccia/cockade textures and complex ore mineralogy indicate multiple hydrothermal mineralizing pulses, resulting in the overall mineral
assemblages: i) native Bi; ii) Ni-Co arsenides/antimonides and sulfarsenides/sulfantimonides + quartz; iii) Zn, Pb, Cu, Bi sulfides and Cu-Ag-Sb sulfosalts + siderite; iv) quartz; v) pyrite and calcite. As noted in the recent literature on similar European ore deposits (Markl et al., 2016), mineralization processes were mainly controlled a) by redox environments, and b) by intersections with other mineral systems. Native Bi and arsenide precipitation occurred under rapidly evolving reducing conditions, favored by interaction of hydrothermal fluids with carbon-rich lithologies, well represented in Ordovician and Silurian host rocks. Moreover, field
surveys in the studied localities pointed out that relevant ore shoots also correspond to intersection zones (IZs) with earlier hydrothermal systems related to the Monte Linas pluton (Deidda et al., 2021). Brecciated domains of IZs were critical both for fluid circulation and entrapment, but also for ore compositions. Indeed, the high-Bi contents of the five-element ore in the Pira Inferida mine are explained by intersection with a granite-related wolframite-quartz (Bi-Au-Te) vein system, from which abundant Bi (±Au) was remobilized.
Similarly, in the Sa Menga mine, skarns and veins rich in Ni-Co-bearing arsenopyrite and Fe sulfides were As and metal sources for the cross-cutting five-element ore. In conclusion, where the low-temperature fiveelement system is close to the inferred contact with the Mt. Linas granite, or it crosscuts the related hightemperature hydrothermal systems selective leaching and reconcentration of Bi, As and other elements might have occurred. Sb abundance seems more related to host rocks chemistry, with increase of Ni-Co antimonides and sulfantimonides far from main IZs. Numerous, unexplored IZs may be assumed as a key targets for further mineral exploration in the Arburèse district, where undiscovered ore shoots may be present at depth
Efficacia anticascolante dell'estere isopropilico del 2,4-D sul pompelmo "Marsh seedless"
No full textRisultati preliminari di una prova di concimazione nell'arancio «Washington navel»
No full textIn this paper are reported the results of 4-year research on the effects of differential N, P, K
treatments on young «Washington navel» orange trees.
The following treatments were compared:
A - Control;
B - Nitrogen fertilization at rate of 60 Kg/ha per year (N);
C - Nitrogen and phosphorus fertilization at rates, respectively, of 60 Kg/ha and 120 Kg/ha
per year (NP);
D - Nitrogen and potassium fertilization at rates, respectively, of 60 Kg/ha and 90 Kg/ha
per year (NK);
E - Nitrogen, phosphorus, and potassium fertilization at rates, respectively, of 60 kg/ha, 120 kg/ha,
and 90 Kg/ha per year (NPK).
The results evidenced that 4 year later the start of the research the different treatments did
not influence tree growth, while N and Mn content of the leaves was increased by NP and NPK
treatments.
No difference was found between N, NK, and NPK treatments on the average yield, that was
reduced in NP treatment and in the control trees.
As for as the fruit quality is concerned, a higher juice percentage was found in fruits from the
control trees, while total soluble solids were increased by treatments NP and NPK
Stereospecific synthesis of 1-aryl-2-(1H-imidazol-1-yl)-O-(alkyl)-ethanoxime ethers with broad spectrum in vitro antifungal.
No full textTorin
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