Search results for " stones"

ESWL Prediction of outcome and failure Prevention

2007

Based on our own experiences and a review of the recent literature, this article evaluates recent developments in predicting outcomes and failures of shockwave lithotripsy when treating patients with urinary tract stones. After a detailed MEDLINE research, the authors identified several variables that influence and predict extracorporeal shockwave lithotripsy (ESWL) success. These variables may be categorized as stone variables, patient variables and operator variables. Only multivariate analysis on a large number of homogenous patients may offer an objective evaluation of the factors conditioning ESWL outcome.

Development of Bladder Carcinoma Following Portacaval Shunt in Rats

1987

Portacaval anastomosis (PCA) was first introduced by Eck (1877) and was investigated in a number of different animals. Lee et al. (1961; 1974) published a reliable method with low mortality in rats. The occurrence of urolithiasis in rats following portacaval anastomosis happened to be noticed by chance. It was published by Herz et al. (1972a, 1972b, 1973), who defined the portacaval shunt rat as an experimental model. Heine et al. (1979) described dysplastic and neoplastic changes of the bladder mucosa following portacaval anastomosis. His findings were confirmed by Duy et al. (1981); Grun et al. (1982), and Dubuisson et al. (1984). However, Wallace et al. (1984) found papillary hyperplasia…

Biodiverse green roofs in Mediterranean climate. Input and lessons learned from Germany and Switzerland

In the realm of the doctoral program in technologies for sustainability and land restoration, this thesis deepens sustainable and ecological solutions for Mediterranean environment after the German tradition and the Swiss school of green roofs for biodiversity. Specific aims were to: (1) assess the effectiveness of the existing green roofs norms in supporting biodiversity; (2) review methodologies and approaches for the implementation of biodiverse green roofs but also their application for ecological design; (3) identify habitat templates in the Mediterranean ecoregion replicable on green roofs; and (4) investigate the long term vegetation development of unmanaged green roofs in order to g…

Le lave. Gli usi ornamentali nell'architettura storica in Sicilia

2012

L’attività vulcanica in Sicilia e nelle isole limitrofe ha nel corso dei millenni contribuito a modellare l’aspetto fisico di un vasto comprensorio, generando sconfinati giacimenti naturali di materiale lapideo impiegato fin dall’età antica nell’attività edificatoria. Relativamente all’utilizzo in architettura, va sottolineata l’ambivalenza di questo materiale chiamato nei secoli a svolgere tanto la funzione di pietra da costruzione, quanto quella di pietra ornamentale. Catania e l’intera area etnea, ma anche l’isola di Lipari, conservano le testimonianze più consistenti e significative di un ricorso ab antiquo alla pietra lavica e ai suoi derivati in architettura. Da una ricognizione compl…