in this work, the waste stone sludge obtained from the granite and marble stone processing factories was used for the manufacture of artificial stones using vibratory compaction in a vacuum environment. the results obtained showed that water absorption and density increased, and the flexure, compressive, and tensile strengths decreased with increase in the content of the waste stone sludge. the...

To evaluate the outcome of extracorporeal shock wave lithotripsy (ESWL) for upper ureteric calculi of size ≤ 20mm without ureteral stenting. This was a prospective study conducted in the institute from January 2015 to August 2015. A total of 130 patients aged between 10 and 80 years with upper ureteric calculi underwent ESWL using the Dornier Compact Sigma Lithotripter. Stone size was calculate...

Heating stone to enhance its flaking qualities is among the multiple innovative adaptations introduced by early modern human groups in southern Africa, in particular during the Middle Stone Age Still Bay and Howiesons Poort traditions. Comparatively little is known about the role and impact of this technology on early modern human behaviors and cultural expressions, due, in part, to the lack of...

OBJECTIVES To investigate the situations in which ureteral double-J stent should be used after retrograde intrarenal surgery (RIRS). PATIENTS AND METHODS Patients with no ureteral double-J stent after RIRS constituted Group 1, and those with double- J stent after RIRS constituted Group 2. Patients' age and gender, renal stone characteristics (location and dimension), stone-free status, VAS sc...

PURPOSE To compare the stone clearance rate, efficiency quotient (EQ), and early complications of shock wave lithotripsy (SWL) and percutaneous nephrolithotomy (PCNL) for solitary lower-pole renal stones measuring 15 to 20 mm. MATERIALS AND METHODS This was a retrospective matched-pair analysis of 142 patients (78 in the SWL and 64 in the PCNL group). Preoperative imaging was done by use of n...

ABSTRACT In multivariate regression estimation, the rate of convergence depends on the dimension of the regressor. This fact, known as the curse of the dimensionality, motivated several works. The additive model, introduced by Stone (10), offers an efficient response to this problem. In the setting of continuous time processes, using the marginal integration method, we obtain the quadratic conv...

the “ Serpentino della Valmalenco ”, a group of serpentinite varieties, was quarried and used as dimension building stone since XI century, especially in thin slabs for roof covering. The extractive activity initially took place underground, moving to open pit quarries 20th century. It is currently widely appreciated material on international market, commercialized several commercial varieties ...

hairball in a urethral diverticulum has rarely been reported. these hairballs are usually formed in the diverticulum coated with a hair bearing epithelium and can lead to urinary obstruction or infection. using laser is a safe way to ablate such stones.

Gabriel Taubin Brown University Holly Rushmeier, who’s served as associate editor in chief (AEIC) for special issues since 2007, has recently been appointed co-editor in chief of Eurographics’ Computer Graphics Forum, effective May 2010. Owing to her increased responsibilities and numerous other commitments, Holly has decided she’ll be unable to continue serving effectively in her current CG&A ...