The barrel of a machine for passing a light weight synthetic aggregate into a sleeve of disparate materials, such as netting and geotextile material, has a tongue extending from a portion of the periphery of the terminal end of the barrel to balance the air flow from the barrel and achieve a uniform filling of the sleeve. A characterization of the frequency-temperature response of the crystal is stored in a memory. Once liquefied the solution can be sprayed unto affected trees in order to provide nutritional benefits that may fight fungi, bacteria and viral pathogens that threaten the well being of plants as well as providing growth enhancing effects. The curved portions of the zig-zags are aligned along the length of the stent in a spaced-apart arrangement with some curved portions attached and others unattached to adjacent zig-zags. During the conversion process, catalytically active metal oxide from the discrete catalytic metal oxide particles migrates to the oxide support particles and forms a monolayer of catalytically active metal oxide on the oxide support particle to form a catalyst composition having a higher specific activity than the admixed particle composition.