The present invention comprises a method and apparatus for manipulating screen objects utilizing multiband regions of influence. The apparatus includes a clamping lever including a cantilevered locking member for engaging a catch member positioned at the proximal portion of a cartridge receiving half-section of the apparatus to retain the clamping lever in a clamped position. The invention provides, for example, periodic nanostructures and microstructures generated by self-assembly of block copolymers and polymer blends comprising a mixture of at least one block copolymer component, such as a brush block copolymer, and at least a second component. A variety of payloads can be delivered to specific points within the boiler, including imaging systems, cutting, and welding apparatuses. The present invention relates to an electrode catalyst produced by subjecting a carbon material having a noble metal catalyst supported thereon to heat treatment under inert gas atmosphere. In some implementations, the system includes a slip tab and a receiver that are configured to slidably engage and interlock with each other upon application of a linear motion.