Abstract: A nuclear reactor is provided. The reactor includes a reactor pressure vessel housing plural fuel rods containing fissile material, the reactor pressure vessel having an upper, removable, vessel head. The reactor further includes control rods, each made of a neutron-absorbing material. The control rods are inserted into the reactor through the vessel head and between the fuel rods to control the rate of the fuel rods' fission reaction. The control rods are movable over a normal range of insertion positions relative to the vessel head to control the power output of the reactor when it is critical and generating useful power, and to put the reactor in a sub-critical shutdown state. The reactor further includes control rod drive mechanisms carried by the vessel head and operable to drive the movements of the control rods.

Abstract: This invention relates to compounds of formula (I) where —X—, n, R1, R3 and Ar— have the values defined herein, their preparation, and use as pharmaceuticals.

Abstract: Compounds of formula (I) where R2, each X, L, Y, Cy, Lp, D and n are as defined in the specification, are serine protease inhibitors useful as antithrombotic agents.

Abstract: This invention relates to compounds of formula (I) where R1 to R12, —W—V—, —X—Y—, p and n have the values defined in claim 1, their preparation and use as pharmaceuticals.