Development of the small parts cylinder: lessons learned.

Objectives/hypothesis: The Consumer Product Safety Commission mandates federal child choking prevention standards in the United States. Consumer Product Safety Commission utilizes the small parts cylinder (SPC), a 31.75-mm inside-diameter cylinder with a slanted bottom and depth ranging from 25.

Fatal and non-fatal food injuries among children (aged 0-14 years).

Objective: To identify and characterize food items with high risk of airway obstruction in children younger than 15 years.

Methods: This retrospective study collected injury data from 1989 to 1998 for 26 pediatric hospitals in the United States and Canada. Aspiration, choking, ingestion, and insertion injuries due to food items were analyzed.

Production and performance of multilayer-coated conical x-ray mirrors.

A method of fabricating replica figured x-ray optics with integral multilayer coatings is presented. With the intact electroforming multilayer process (IEMP) technique, we sputter multilayers onto a reusable superpolished mandrel, electroform nickel over the multilayers, and remove the multilayer-coated nickel shell intact from the mandrel. This approach offers advantages over more traditional, original, and segmented-replica fabrication techniques, including low cost; compatibility with a wide range of mirror designs, diameters, and focal lengths; simple integration with multilayer sputtering processes; and the ability to produce complete shells of revolution.