نتایج جستجو برای: expandable additive
تعداد نتایج: 71601 فیلتر نتایج به سال:
CONTEXT Insertion of a self-expandable metal stent is still controversial for treatment of benign common bile duct stenosis but can be a valuable alternative to surgical treatment. OBJECTIVE Aim of our study was to analyze the efficacy of covered and uncovered self-expandable metal stent in patients with chronic pancreatitis and common bile duct stenosis. MATERIAL AND METHODS Twenty patient...
BACKGROUND Temporary placement of self-expandable stents has been increasingly used for the management of benign esophageal diseases. OBJECTIVE To evaluate the safety of endoscopic removal of esophageal self-expandable stents placed for the treatment of benign esophageal diseases. DESIGN Multicenter retrospective study. SETTING Six tertiary care centers in the United States and Europe. ...
Study Design Mechanical study. Purpose To compare the pullout strength of different screw designs and augmentation techniques in an osteoporotic bone model. Overview of Literature Adequate bone screw pullout strength is a common problem among osteoporotic patients. Various screw designs and augmentation techniques have been developed to improve the biomechanical characteristics of the bone-...
Background & Aims: Nearly 30 hereditary disorders in humans result from an increase in the number of copies of simple repeats in genomic DNA, including fragile X syndrome, myotonic dystrophy, Huntington’s disease, and Friedreich’s ataxia. One the most frequently occurring types of mutation is trinucleotide repeat expansion. The present study was conducted with the aim of investigating the cause...
In this study, we first introduce a new class of spaces, namely soft expandable which is generalization paracompact and countably compact spaces. Some properties these spaces that are discussed in paper the space equivalent to every A?-soft cover has softLF open refinement. Also, discuss under what conditions paracompact. With help interesting examples, elucidate there no relationship between t...
Abstract The article presents results of the research on influence halloysite and its modified versions in a configuration with expandable graphite thermal stability, integrity intumescence fire-resistant paints for steel based epoxy resin ammonium polyphosphate/pentaerythritol/melamine (APP/PER/MEL) system. preliminary scanning electron microscope (SEM) analysis showed that sulfuric acid (M2) ...
OBJECTIVES This study sought to investigate whether self-expanding stents are more effective than balloon-expandable stents for reducing stent malapposition at 3 days after implantation in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention. BACKGROUND Acute myocardial infarction is associated with vasoconstriction and large thrombus ...
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