1,721,337 research outputs found
L'acqua negli ambienti carsici italiani
No full textLe aree carsiche italiane rappresentano il 18% del territorio nazionale e forniscono risorse idropotabili valutabili in oltre il 25% del totale.
L'idrodinamica e l'idrochimica egli acquiferi carisci è assolutamente peculiare e necessita di specifici protocolli per poter essere da un lato studiati e dall'altro salvaguardati per conservarne inalterate le risorse di acqua potabile
Un atlas des concrétions souterraines Hill C.A. et Forti P. -1986
No full textRenault Philippe. Un atlas des concrétions souterraines Hill C.A. et Forti P. -1986. In: Karstologia : revue de karstologie et de spéléologie physique, n°11-12, Année 1988 1988. p. 78
Un atlas des concrétions souterraines Hill C.A. et Forti P. -1986
No full textRenault Philippe. Un atlas des concrétions souterraines Hill C.A. et Forti P. -1986. In: Karstologia : revue de karstologie et de spéléologie physique, n°11-12, Année 1988 1988. p. 78
Association of early glycemic change with short-term mortality in lobar and non-lobar intracerebral hemorrhage
Full text linkThe association between early glycemic change and short-term mortality in non-diabetic patients with acute intracerebral hemorrhage (ICH) is unclear. We retrospectively investigated non-diabetic patients with lobar (n = 262) and non-lobar ICH (n = 370). Each patient had a random serum glucose test on hospital admission and a fasting serum glucose test within the following 48 h. Hyperglycemia was defined as serum glucose ≥ 7.8 mmol/l. Four patterns were determined: no hyperglycemia (reference category), persistent hyperglycemia, delayed hyperglycemia, and decreasing hyperglycemia. Associations with 30-day mortality were estimated using Cox models adjusted for major features of ICH severity. Persistent hyperglycemia was associated with 30-day mortality in both lobar (HR 3.00; 95% CI 1.28-7.02) and non-lobar ICH (HR 4.95; 95% CI 2.20-11.09). In lobar ICH, 30-day mortality was also associated with delayed (HR 4.10; 95% CI 1.77-9.49) and decreasing hyperglycemia (HR 2.01, 95% CI 1.09-3.70). These findings were confirmed in Cox models using glycemic change (fasting minus random serum glucose) as a continuous variable. Our study shows that, in non-diabetic patients with ICH, early persistent hyperglycemia is an independent predictor of short-term mortality regardless of hematoma location. Moreover, in non-diabetic patients with lobar ICH, both a positive and a negative glycemic change are associated with short-term mortality
Hyperkarstic phenomena in the Iglesiente mining district (SW-Sardinia)
No full textThe Cambrian carbonatic rocks of the Iglesiente mining district contain important mineral deposits that have led to intense mining activity over the centuries. The same rocks have been affected by polycyclic karst phenomena since the Ordovician. The exploitation voids go down to -250 m, as a result of a pumping system, and have revealed many natural caves. The study of these caves has clearly demonstrated that "normal" karstification is less significant than hyperkarstic dissolution determined by different processes. The caves are filled with sediments, chemical deposits such as calcite speleothems, enrichments of economic minerals (Ag-rich galena, barite, smithsonite, etc.) and crystals (calcite, barite, quartz, etc.). The natural caves of the mines of Iglesiente and their morphologies and fillings related to hyperkarstic phenomena, represent a unique and inestimable scientific resource, that should be adequately protected and valued
La carta delle vulnerabilità intrinseca ed integrata alla contaminazione per l'area carsica del Monte Covria (Friuli, Italia).
No full text- …
