Abstract: A method and a sensor device for evaluating residual Sulphur in a cement preheater of a cement kiln, wherein the residual Sulphur is based on the values of the fuel Sulphur content, the fuel rate of consumption, the hotmeal quality and the clinker Sulphur content. A method for evaluating blockage in a cement preheater includes evaluating the residual Sulphur in the cement preheater, determining an agglomeration rate of Sulphur compounds agglomerating on an inner surface of the cement preheater based on the residual Sulphur, and evaluating a level of blockage in at least one predetermined pathway of the cement preheater using a blockage evaluation unit, wherein the level of blockage is based on the agglomeration rate.

Abstract: This invention relates to a catheter for use in post-mortem angiography and a method for post-mortem in-situ cardiac angiography of a human or animal body. The catheter comprises (a) a proximal end for insertion into a human or animal body, (b) a distal end which remains outside the body during normal use, (c) a tube for delivering an imaging agent to the body, and (d) a marker for insertion into the body, the marker being positioned at a predetermined distance from the proximal end and comprising a substance such that its position once inserted into the body is detectable from outside the body.