Abstract: A multilayer element for assaying carbon dioxide is disclosed. The elememt comprises a spreading layer comprising acetazolamide, a reagent layer comprising phosphoenolpyruvate carboxylase and phosphoenolypyruvate and a registration layer comprising reduced NAD and maleate dehydrogenase.

Abstract: A device for use in heating or incineration plants for use as a waste gas filter to eliminate and/or convert harmful elements in the waste gas is disclosed. The device of the subject invention can eliminate soot and soot-like products, or it can serve as a heat exchanger or as a mixing component for a furnace. The device of the subject invention comprises a sintered body made of one or more compression molded highly heat resistant sintered parts. The sintered body manifests high porosity and/or a multitude of intake and outlet channels.

Abstract: An HF alkylation unit with improved safety features including an acid storage and evacuation receiver which maintains a large proportion of the acid inventory of the unit at a remote, safe location. The unit also has an acid evacuation system which is capable of transferring the acid from the reactor section of the unit to the receiver within a very short period of time in the event of an uncontrolled release from the unit. The acid receiving drum is connected to the remainder of the unit by means of acid transfer lines for rapidly evacuating the acid and is desirably maintained at a pressure lower than the reactor section of the unit to enable the acid to be pressured into the receiver. The pressure in the receiver is suitably maintained by a pressure balancing line to the fractionation system at a lower pressure than the alkylation reaction itself. Unit acid inventory may be reduced by the use of an acid settler provided with an acid boot and coalescing baffles which promote a phase separation.

Abstract: Materials to be calcined are introduced through an outer entrance into a front chamber while keeping an inner entrance closed. The outer entrance is then closed, the inner entrance is opened, and the materials are advanced into a calcining furnace through the inner entrance and are calcined therein. The calcined materials are then advanced into a rear chamber through an inner exit while an outer exit is kept closed. The inner exit then is closed, the outer exit is opened, and the calcined materials are carried out of the rear chamber through the outer exit. The calcining apparatus includes a tubular calcining furnace. A feed pipe and an exhaust pipe for reaction gases are attached to both ends of the furnace. The apparatus also includes a front chamber and a rear chamber, each having an inner entrance/exit and an outer entrance/exit. The front chamber and the rear chamber are also attached to the exhaust pipe.

Abstract: A method of gamma glutamyltransferase (GGT) analysis is suitable for use with hemolyzed fluid or dried whole blood samples which avoids the need for protein precipitation or centrifugation of the sample. Analysis is by first mixing a fluid or dried whole blood sample with a phosphate buffered saline solution containing a non-ionic biological detergent. The mixture is then vigorously agitated for one hour at room temperature. The activity of the GGT is then determined by reacting the mixture with a GGT substrate. Color is developed by a diazo coupling reaction with the enzyme reaction product. The intensity of the color is then measured.

Abstract: An autoclave for sterilizing waste or the like has a stirrer and a loading opening. The loading opening is connected to a pressure lock, which has at least one filling opening to be closed in pressure-tight manner. The filling opening leads into at least one chamber provided in the pressure lock casing. This chamber forms part of a mechanism moving the chamber from a filling position connected to at least one filling opening into a loading position connected to the loading opening.

Abstract: A soot burn-off filter including a monolithic filter block made of porous ceramic with a multiplicity of channels which extend in the direction of flow of the exhaust gases of a combustion engine. The channels are sealed alternately at the ends by plugs and are separated from one another by porous partition walls. The partition walls are provided with a catalytic coating and have an increased flow resistance in a region at the downstream end of the filter, the partition walls in this region being of gastight design and the catalytic coating of the partition walls ending in a region upstream of the gastight region of the partition walls.

Abstract: A rotary contactor (10) suitable for liquid/liquid extraction processes in a nuclear fuel reprocessing plant includes a rotor (14) with a contacting chamber (16) defined within it, the chamber being of annular shape with its radial width considerably less than its inner radius. Neutron absorbing material (22) inhibits neutron transmission between different parts of the contactor. Where the rotation axis is upright, liquids may be fed into the contactor via open-topped annular feed channels (30, 32) at the upper surface of the rotor (14). The chamber (16) includes a packing material (42) such as wire mesh, random or structured packing. The contactor also includes an arrangement to control the radial position of the liquid/liquid coalescing interface, or to control the radial position at which one of the liquids is taken off, which may be operated by gas pressure.