Abstract: A gas distribution system of a reaction chamber wherein the reaction chamber has a body defining a closed inner volume, in the inner volume rectangular substrates are arranged spaced apart from each other and electrodes suitable for providing high-frequency electromagnetic field are disposed between the substrates; the spaces between the substrates provide flow channels for the laminar flow of reaction gases between two opposite sides of the chamber, and the gas distribution system comprises an inlet channel, a gas distribution area and a distributing plate on one side of the chamber, and a collecting plate, a collection area and an outlet channel on the other side, and in the gas distribution system between the inlet channel and the distribution area a mixing chamber is provided, which is separated from the distribution area by a wall portion and provides better mixing and homogenization of reaction gases.

Abstract: A dry cleaning system for removing dust and lint on the fly from blanket cylinders in offset printing presses. The cleaning system includes a relatively small brush mounted for rotation about an axis substantially perpendicular to the rotational axis of the blanket cylinder. In operation, the brush can be reciprocally moved across the surface of the blanket cylinder and selectively moved into and out of contact with the blanket cylinder. The contact pressure of the brush is pneumatically controlled to maintain a predetermined, set pressure and the brush automatically retracts should the pressure source fail. The system can be operated to clean the entire width of the blanket cylinder or only the portion of it actually being used to print. A vacuum pickup is included with its separately mounted housing and the entire cleaning system is carried on a unitary support structure that is removably secured at its ends for quick and easy installation and removal.

Abstract: The cutting apparatus and method of the present invention involve feeding a newsprint wrapper or any other sheet of paper downwardly along a planar path between two rotating cutters. Each of the cutters includes a planar blade member with an outer, sawtoothed cutting portion. In operation, the blade members are rotated about respective axes to move their cutting portions downwardly along arcuate paths that preferably pass through the path of the downwardly fed sheet. The arcuate paths of the cutting portions overlap and one of the cutting portions of the blade members is spaced farther from its rotational axis than the other. It is also moved tangentially faster about its axis than the cutting portion of the other blade member. In this manner, a cutting action is produced which first punctures and then subsequently tears or shreds a horizontal cut across the downwardly fed sheet to cut it into smaller pieces or segments.

Abstract: A fibronectin injectable solution is made by recovering a fibronectin-containing raw material which is solubilized, provided with stabilizers and then subjected to an initial heat treatment at 57.degree. to 60.degree. for at least ten hours. After fibronectin concentration and the addition of further stabilizers and plasma-protein vehicle, the solution is again subjected to a temperature of 60.degree. for ten hours to provide an injectable solution which is free from virulent hepatitis.