Abstract: A memory controller for use in a computer system. The controller has a buffer having an input configured to receive read and write requests. Each request has an associated memory address. For a selected received request, prior received requests out of a set of the received requests are determined. For each determined prior received request, that request's memory address is compared to the selected request's memory address to see if they match. If a match exists, the selected request is prevented from being memory executed.

Abstract: Metabolic processes within particulate durable foodstuffs (for example, grains) which have been stored in storage bunkers produce moisture. To prevent, arrest and/or reduce the accumulation of such moisture, vents are provided at the top and at the side of a storage bunker. Each vent is a pipe. The top-venting pipe is mounted substantially vertically and is provided with a rain shield. The side-venting pipe is closed with a cap which has a perforated or mesh-covered region to permit the ingress of air. The venting arrangement interrupts the normal convection cycle in the stored foodstuff mass and removes moisture-carrying air from the bunker.