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ISSN When the procedure is not successful, the use of a temporary stent can be a solution. Aim: To prospectively analyze the usefulness of endoscopic biliary stents in the temporary management of biliary obstruction due to choledocholithiasis. Material and methods: Analysis of 51 consecutive patients age range years, 34 females with common bile duct stones that, from January to December , were subjected to an endoscopic insertion of a biliary stent.
This test method is intended to give a relatively rapid indication of the potential expansive reactivity of certain carbonate rocks that may be used as concrete aggregates. The test method has been successfully used in 1 research and 2 preliminary screening of aggregate sources to indicate the presence of material with a potential for deleterious expansion when used in concrete. The test method is intended as a research and screening method rather than as the basis of a specification requirement.