A center pillar upper portion joining structure that may improve joining strength and rigidity between an upper portion of a center pillar and a roof side rail. According to various embodiments, the textured substrates are characterized by substrate patterns exhibiting low-frequency roughness or flatness and long range order. A plurality of nail guide holes are defined through the nozzle and communicate with openings defined in the base plate and slots defined in a side of the magazine so that nails engaged with the slots are sent to the nail guide holes to be ejected. It can rest on the ground or be mounted on legs or on floating devices. The available data dependency paths are returned to the user for selection. A sample of the liquid material may be placed on the tip of the pin for delivery to a target area, such as a specific location on a microarray, in a contactless manner.