A string is equipped with a braking device to regulate its speed into the wellbore through an existing tubular. 08 or smaller, and \u201cx\xb7A\u201d defined as a product of said ratio \u201cx\u201d and a content ratio \u201cA\u201d of said \u03b1,\u03b2-ethylenically unsaturated nitrile unit is 1. The resilient portion of the contact structure is comprised of resilient arms defined in the layers. The resource manager arbitrates access to the resources provided by the resource providers on behalf of the consumers. Each of the positions corresponds to a predetermined combination of values of the reciprocation speed and the magnitude of the orbital motion. The needle is then withdrawn from the stopper and the filled container is transported outside of the e-beam chamber.