PURPOSE The objective of this study were to evaluate the location of ureteral stones and the diameter of the ureter in patients with renal colic. MATERIALS AND METHODS We retrospectively reviewed the records of 95 consecutive patients who presented to the emergency department with renal colic in whom urinary stones were diagnosed by computed tomography between January 2009 and August 2009. Th...

Isolation of Nanobacteria from different types of urinary tract stones from different populations all over the world raises the possibility that these microorganisms are etiological agents of these stones. The aim of this study was to isolate and identify the nanobacteria from different types of human urinary tract stones and serum from Egyptian population. We searched for nanobacteria from ten...

Background: Sand production is an important factor affecting reservoir exploitation. Excessive sand production affects the oil well life, causes the damage to the oil recovery device and brings serious hidden danger in the process of safety production. Objective: This paper presents a sand content computation model for the crude oil, which uses the power of sand production and Parseval theorem,...

Recent population studies have found symptomatic kidney stone formers to be at increased risk for chronic kidney disease (CKD). Although kidney stones are not commonly identified as the primary cause of ESRD, they still may be important contributing factors. Paradoxically, CKD can be protective against forming kidney stones because of the substantial reduction in urine calcium excretion. Among ...

Since medical treatment of gallstones is confined to cholesterol-rich stones, the ability of clinical radiographs to predict gallstone type was tested prospectively by comparing the preoperative radiological appearance of gallstones from 57 unselected patients with cholelithiasis coming to cholecystectomy with the subsequent analysis of the stones both by X-ray diffraction and by chemical techn...

PURPOSE To evaluate the treatment success rate of flexible ureterorenoscopy (URS) for opaque and non-opaque renal stones. MATERIALS AND METHODS Ninety-four patients, who underwent flexible URS for renal stones between October 2012 and January 2014, were included. The patients were divided into two groups according to stone radiolucency. The patients were evaluated with preoperative and postop...

ing feature of civilization. The continual improvements and refinements of writing systems throughout history are a testament to their importance. In the last 10,000 years, the media of writing systems have changed from cave walls, rune stones, and sand to papyrus, wax tablets, parchment, paper, and—in our age—networked computers. Carvings, pieces of scribble, and elaborate texts have been gene...

postcholecystectomy clip migration is rare and can lead to complications such as clip-related biliary stones. most of such incidents have been reported as case reports. this study reviews a case of postcholecystectomy clip migration. it can occur at any time but typically occur at a median of 2 years after cholecystectomy. clinical presentations are similar to those with primary or secondary ch...