A keyboard encryption system that enables encryption of keystrokes prior to their entry into a remote desktop. The invention also pertains to a method of inkjet printing with this ink set. A method of assembling and retaining containers includes providing a plurality of the cradle assemblies; placing a first cradle assembly on the cart; placing a first row of containers upon the first cradle assembly; placing a second cradle assembly over the first row of containers; and, placing a second row of containers upon the second cradle assembly. The sol-gel compositions can be used in a sorbate-activated actuator or in a detector for non-polar sorbates. According to one aspect of the invention, the at least one groove extends along the upper section such that a fuel rod received in fixing members is longitudinally extractable or insertable from the upper end side of the fuel assembly.