This invention comprises the compounds of formula :wherein r, s, t, Y1\u2013Y2, R1, R2, R3, R4, R5, R6 and R7 have defined meanings, having farnesyl transferase inhibiting activity; their preparation, compositions containing them and their use as a medicine. The touch screen is configured to have an array of conductive, optically transmissive sensor elements coupled to sensor circuitry. In particular, the operation of the hydrotreater at reduced severity to allow at least about 20 ppm by weight of organic nitrogen into the hydrocracker feed is shown to lead to these important benefits. Since the connected-tube body is easily bent in the vicinity of a connecting base member between the tubes, the connected-tube body can be easily curved along the fluid passage, thus facilitating an operation for inserting the connected-tube body into the fluid passage and also enhancing a sealing property with respect to the fluid passage. According to this head protecting body, despite that the impact-on-the-head absorbing liner is not broken easily more than necessary near a region reinforced with the reinforcing swell, both the maximum acceleration during impact and an HIC can be decreased effectively.