This invention relates to the identification of individuals in the population who are at particular risk of suffering from disorders associated with neurocognitive degeneration, such as Alzheimer’s disease. The frame defines a hole in a middle of the frame. Upon impact of the projectile with the target an elastic mechanism absorbs elastically a first portion of the kinetic energy. This roof structure defines an opening extending through the rafter for receiving the stanchion’s rigid elongated base which extends through the opening and is attached at its lower end to the structural member supporting the rafter. The electronic element package enables a reduction in thickness and offers improved reliability. The process is particularly applicable when the synthesis gas is used to prepare a synfuel by methanol synthesis or a Fischer-Tropsch process.