Search results for " infiltration"

Run duration effects on the hydrodynamic properties of a loam soil estimated by steady-state infiltration methods

2020

Steady-state methods for the analysis of single-ring infiltration data are commonly applied. However, the duration of an infiltrometer experiment is often established quite subjectively based on the assumption that in general infiltration stabilizes rather quickly in the field. For a loam soil, the effect of the duration of a beerkan run on sorptivity, S, and saturated hydraulic conductivity, Ks, was tested by using the BEST (Beerkan Estimation of Soil Transfer parameters)-steady method and SSBI (Steady version of the Simplified method based on a Beerkan Infiltration run) method for data analysis. The standard experiment, based on a total of 15 water volumes each establishing an initial pon…

Multiple Non-linear Reservoirs to Model Water Balance Components in Sandy Soils

2023

In the hydrologic literature, to model water flow in unsaturated soils, the Richards equation is usually applied, allowing the main components of the hydrologic cycle, as rainfall partitioning into surface runoff and infiltration, to be determined. The Richards equation is highly nonlinear, making very challenging to derive analytical solutions. Recently, for constant rainfall intensity, under the simplified hypothesis of gravity-driven infiltration, and by assuming a capacitance framework, a simplified solution of the Richards equation that considers the Brooks and Corey hydraulic conductivity function was suggested. By maintaining the assumption that the infiltration process is dominated …

TERAPIA INFILTRATIVA INTRA-ARTICOLARE ASSOCIATA A MESALAZINA E PROBIOTICI NEL TRATTAMENTO DELL'ARTRITE NEL PAZIENTE CON MALATTIA INFIAMMATORIA CRONIC…

2015

L'artrite secondaria a malattia infiammatoria cronica intestinale può essere presente parecchi anni prima della diagnosi oppure manifestarsi come una vera complicanza.

Co-morbidities in patients with hip osteoarthritis and treated with ecoguided infiltrations of Hyaluronic acid: study of the effectiveness of the tre…

2014

The effectiveness of eco-guided infiltrations with high molecular weight associated with administration of oral chondroprotective supplements in oste…

2012

Osteoarthritis does not mean a degenerative articular process only but a pathologic expression of wear, inflammation and immunological imbalance of the joints. Our study has the aim to demonstrate the effectiveness of eco-guidate infiltrations with high molecular weight associated with administration of oral chondroprotective supplements (glucosamine solfate, chondroitin sulphate, hydrolyzed collagen type II, hyaluronic acid and L carnitine fumarate) in comparison with the only treatment with ecoguided infiltrations with hyaluronic acid in patients suffering from primary osteoarthiritis of the hip.

Sistema di Controllo Interno e prevenzione delle infiltrazioni della criminalità organizzata

2019

L’intensificarsi della diffusione delle infiltrazioni della criminalità organizzata in molteplici settori rende sempre più complessa per le aziende operanti con la pubblica amministrazione, la verifica dell’affidabilità, non solo economico-patrimoniale, dei soggetti (es., partner, clienti, fornitori) con i quali interagire. L’assenza di efficaci strumenti di prevenzione e contrastato dei tentativi di infiltrazioni della criminalità organizzata nella gestione aziendale può dar luogo a sanzioni interdittive, compromettendo in modo irreversibile l’immagine e il processo di creazione di valore e tutela degli stakeholders. Muovendo da tali presupposti, il presente lavoro è teso a verificare se i…

I beni confiscati come nuovo spazio pubblico

2014

Nel territorio a nord-est di Palermo la criminalità organizzata, in molte occasioni, ha condizionato il potere politico e amministrativo e inciso su valori e abitudini collettive, esercitando unʼinfluenza determinante nellʼespansione periurbana e nella conseguente trasformazione del paesaggio agrario. Alcuni dei principali centri oggetto della ricerca hanno governato il territorio sotto il controllo sistematico della mafia rendendo necessario lʼintervento dello Stato. Esaminare i rapporti tra amministrazioni locali e Cosa nostra in quei luoghi permette di individuare ricorrenze criminali nella gestione dei beni collettivi e di concentrare lʼattenzione sulle proprietà confiscate. In the nort…

Clientelismo e metodo mafioso: network Criminali e pubblica amministrazione in Sicilia

2011

Quale relazione lega clientelismo e mafia? Quali elementi accomunano crimine dei potenti e metodo mafioso? Come si strutturano i sistemi criminali nelle realtà locali? Il saggio presenta una selezione ragionata di studi sulle relazioni tra clientelismo e mafia (par. 1) e sulle reti che si configurano nell’interconnessione tra sistemi criminali e pubblica amministrazione (par. 2). Tali studi permettono di leggere tanto fenomeni storici, come i comitati d’affari che asservivano i poteri pubblici nella Palermo degli anni Cinquanta (par. 3), tanto fenomeni più recenti, come quelli che, dal 1991 in poi, rientrano nella fattispecie dei Comuni e degli enti locali commissariati per infiltrazioni ma…

ASSESSMENT OF THE SIMPLIFIED FALLING HEAD TECHNIQUE TO MEASURE THE FIELD SATURATED SOIL HYDRAULIC CONDUCTIVITY

2013

The Simplified Falling Head (SFH) technique to measure field saturated soil hydraulic conductivity, Kfs, has received little testing or comparison with other techniques. Different experiments were carried out to i) determine the effect of ring size on the measured conductivity; ii) compare the SFH and Pressure Infiltrometer (PI) techniques in a clay loam soil; and iii) assess the indirect approach to estimate the * parameter used in the SFH methodology. Sampling a relatively large number of sites allowed to detect a statistically significant relationship between the Kfs values obtained with rings differing in diameter (0.15 and 0.30 m, respectively). This relationship suggested that a meas…

Changes in soil hydrodynamic parameters during intermittent rainfall following tillage

2023

The changes in the soil hydrodynamic properties following soil tillage were investigated in rainfall simulation trials of intermittent rain at the Masse experimental station (Soil Erosion LABoratory, SERLAB) in central Italy. The experiments were designed to build a database as representative as possible of situations that may occur in nature. The data collected during the experiments were used to determine the saturated soil hydraulic conductivity, Ks, the soil sorptivity at the antecedent soil–water matric potential Ψi, S, and the flow-weighted mean pore size at Ψi, λm. It was also verified if the energy content of total rainfall after tillage explained the short-term temporal variability…