BACKGROUND Recently, single-port video-assisted thoracic surgery (VATS) has been proposed as an alternative to the conventional three-port VATS for primary spontaneous pneumothorax (PSP). The aim of this study is to evaluate the early outcomes of the single-port VATS for PSP. METHODS VATS was performed for PSP in 52 patients from March 2012 to March 2013. We reviewed the medical records of th...

background and objectives: one of the simplest and cheapest attachments for overdentures, is the ball-type attachment, however, keeping it during the first year of prosthesis delivery and after that is one of the main concerns of dentists. the present study aimed to assess the wear of matrix in overdentures attachment supported by one, two and three implants in the mandible. materials and metho...

in this paper, we study some ring theoretic properties of the amalgamated duplication ring $rbowtie i$ of a commutative noetherian ring $r$ along an ideal $i$ of $r$ which was introduced by d'anna and fontana. indeed, it is determined that when $rbowtie i$ satisfies serre's conditions $(r_n)$ and $(s_n)$, and when is a normal ring, a generalized cohen-macaulay ring and finally a filter ring.

HYPOTHESIS Characteristics of intra-abdominal abscess can be used to predict successful outcome for percutaneous catheter drainage (PCD). METHODS We performed a multicenter prospective study of patients who had intra-abdominal infections treated with PCD and intravenous antibiotics. Multivariate regression analysis determined predictors of successful outcome. RESULTS The study included 96 p...

BACKGROUND/AIMS The aim of this study was to compare the surgical drainage of large, symptomatic pancreatic cysts (>5 cm) with single- and multi-channel endoscopic drainage. MATERIALS AND METHODS In the period 2005-2010, we treated 112 patients with post-inflammatory pancreatic cysts. Thirty-six patients underwent surgical internal drainage. The remaining group of patients was treated endosco...

The Ring-LWE problem, introduced by Lyubashevsky, Peikert, and Regev (Eurocrypt 2010), has been steadily finding many uses in numerous cryptographic applications. Still, the Ring-LWE problem defined in [LPR10] involves the fractional ideal R∨, the dual of the ring R, which is the source of many theoretical and implementation technicalities. Until now, getting rid of R∨, required some relatively...