A method is provided for constructing a cache for storing results of previously evaluated queries in a binary tree based on a cache key. A set of default, current wait times is initialized for resource requests of each of a plurality of resources. The transmitter may be communicatively coupled to the receiver and may be configured to rebroadcast the message within a predetermined amount of time after receiving the message. The first container is also operable for use as an allograft delivery device to a surgical site. introducing external air until the pressure inside the hallow container reaching standard value; e. 5 to 3 mass %; compacting the powdery mixture D into a raw briquette E; and charging the raw briquette without drying into a rotary hearth furnace 5 and thermally reducing the raw briquette to obtain a reduced iron briquette F and a crude zinc oxide G.