PURPOSE To retrospectively assess the clinical utility in ureteroscopy (URS) planning of cumulative stone diameter (CSD), which does not account for stone width or depth, as a predictor of URS outcome and compare it with stone volume. MATERIALS AND METHODS Patients with renal stones treated at a single institute by flexible URS were retrospectively evaluated. To assess the clinical utility of...

As a result of the complex geological conditions sand-cobble stratum, various types problems may arise during construction tunnels crossing most prominent which is stability problem face. In order to study tunnel face in first, continuous medium model sandstone soil established, and numerical simulation carried out on three-axis compression test analyze its micro-mechanical characteristics. Sec...

This study investigated the dimensional stability of denture bases influenced by packing methods, in relation to post-pressing times, in the Clássico acrylic resin which was prepared according to manufacturer recommendations. Forty maxillary wax bases were made and randomly assigned into 2 groups of 20 specimens each according to the conventional and RS system packing methods. In each method, t...

A few decades ago, river erosion protective approaches were widely implemented, such as straightening the course, enhancing riverbed/bank stability with layers of concrete or riprap, and increasing channel conveyance capacity (i.e., overwidening). However, recent research has established that practices can be tremendously costly adversely affect rivers’ ecological health. To alleviate these eff...

Transitive tournament (including transitive triangle) and its blow-up have some symmetric properties. In this work, we establish an analogue result of the Erdös-Stone theorem weighted digraphs with a forbidden tournament. We give stability oriented graphs triangles show that almost all are bipartite, which reconfirms strengthens conjecture Cherlin.

Let X be a completely regular space and let A(X) be a ring of continuous real-valued functions onX which is closed under local bounded inversion. We show that the structure space of A(X) is homeomorphic to a quotient of the Stone–Čech compactification of X. We use this result to show that any realcompactification of X is homeomorphic to a subspace of the structure space of some ring of continuo...